Contingent liabilities Disclosure of contingent liabilities [line items] Acquisition of property, plant and equipment Purchase of property, plant and equipment, classified as investing activities Disclosure Of Taxes And Contributions [Table] Disclosure Of Taxes And Contributions [Table] Schedule of information pertaining to taxes and contributions. Amazonas Energia Amazonas Energia [Member] This member stands for amazonas energia. Interest received Reimbursement Effects On Cash Flow, Interest Received Reimbursement Effects On Cash Flow, Interest Received Foreign‑Currency Loan, February 27, 2026 Foreign‑Currency Loan, February 27, 2026 [Member] Foreign‑Currency Loan, February 27, 2026 Total liabilities LiabilitiesRecognisedAsOfAcquisitionDate The amount recognised as of the acquisition date for aggregate liabilities acquired in a business combination. IFRS Schedule Of Equity Method Investment Equity Method Investee Name [Domain] IFRS Schedule Of Equity Method Investment Equity Method Investee Name [Domain] IFRS Schedule Of Equity Method Investment Equity Method Investee Name [Domain] Entity File Number Entity File Number Installed Capacity (in watts) Electric power generation installed capacity The total power installed capacity of the entity. Compulsory Loan – Judicial Settlements (AXIA Energia) Compulsory Loan – Judicial Settlements (AXIA Energia) [Member] Compulsory Loan – Judicial Settlements (AXIA Energia) Others Other expenses¹ Other Operating Expenses The amount of other operating expenses. 061/2001 Electricity Transmission Concessions, Corporate, Agreement, 2 [Member] This member stands for electricity transmission concessions, corporate, agreement, 2. Levels of fair value hierarchy [domain] Levels of fair value hierarchy [domain] Asset ceiling Asset ceiling Asset ceiling Continuing operations Comprehensive income from continuing operations, attributable to owners of parent Transfer of minority interest Transfer Of Minority Interest Transfer Of Minority Interest Belo Monte Transmissora de Energia S.A. Belo Monte Transmissora [Member] This member stands for Belo monte transmissora spe S.A. Social Security Program Non-discounted benefits of post-employment defined benefit plan The estimated amount, at the balance sheet date, of the non-discounted future maturation of benefits of post-employment defined benefit plans. LOANS, FINANCING AND DEBENTURES Description Of Accounting Policy For Financings And Loans Receivable At Fair Value [Policy Text Block] Description Of Accounting Policy For Financings And Loans Receivable At Fair Value Net defined benefit liability (asset) [axis] Net defined benefit liability (asset) [axis] Relieved percentage Defined benefit plan, actuarial assumption, relieving percentage The percentage of relieving in actuarial valuation of assumption in defined benefit plan. Banking market Domestic Currency, Banking Market Borrowings [Member] This member stands for loans and financing with financial institutions in domestic currency. LEGAL LEGAL This member stands for a component of equity representing the legal profit reserves. Discount rate for renewed contracts awarded (as a percent) Discount Rate for Renewed Contracts Awarded Discount rate for renewed contracts awarded. 004/2010 Electricity Transmission Concessions, Corporate, Agreement, 17 [Member] This member stands for electricity transmission concessions, corporate, agreement, 17. Compulsory loan – Agreements Compulsory Loan Agreements [Member] This member stands for compulsory loan agreements. AXIA Energia, Corporate Projects – AXIA Energia Nordeste, 2029 AXIA Energia, Corporate Projects – AXIA Energia Nordeste, 2029 [Member] AXIA Energia, Corporate Projects – AXIA Energia Nordeste, 2029 Dams, reservoirs and water mains Dams, reservoirs and water mains Represents the information pertaining to Dams, Reservoirs and Water Mains. Taxes recoverable Taxes Recoverable Recognized As Of Acquisition Date Taxes Recoverable Recognized As Of Acquisition Date PNC Class C Preferred Shares Class C Preferred Shares [Member] This member stands for equity instruments that are senior in some aspects to ordinary shares, but subordinate to debt instruments in terms of claim, classified as Class C. Schedule of repurchase of treasury shares Disclosure of treasury shares [text block] Tamanduá Mirim 2 EOL Tamandu Mirim 2 Represents the information pertaining to EOL Tamandu Mirim 2. Disclosure of detailed information about borrowings [abstract] Disclosure of detailed information about borrowings [abstract] Defined benefit plans, demographic assumptions tables [Domain] Defined benefit plans, demographic assumptions tables [Domain] Defined benefit plans, demographic assumptions tables [Domain] Opening balance Closing balance Intangible assets and goodwill Complexo de Paulo Afonso (Paulo Afonso I, II, III, IV e Apolonio Sales) Complexo de Paulo Afonso (Paulo Afonso I, II, III, IV e Apolonio Sales) [Member] Complexo de Paulo Afonso (Paulo Afonso I, II, III, IV e Apolonio Sales) Statement of comprehensive income [abstract] Statement of comprehensive income [abstract] Consideration for the transfer Proceeds from sales of interests in associates 020/2012 Electricity Transmission Concessions, Corporate, Agreement, 7 [Member] This member stands for electricity transmission concessions, corporate, agreement, 7. Debentures, AXIA Energia, Maturity 04/25/2026 Debentures, AXIA Energia, Maturity 04/25/2026 [Member] Debentures, AXIA Energia, Maturity 04/25/2026 Debentures, AXIA Energia, Maturity 09/15/2031 Debentures, AXIA Energia, Maturity 09/15/2031 [Member] Debentures, AXIA Energia, Maturity 09/15/2031 Other financial expenses Other Financial Expenses The amount financial expenses that the entity does not separately disclose in the same note. 013/2011 Electricity Transmission Concessions, Corporate, Agreement, 63 [Member] Electricity Transmission Concessions, Corporate, Agreement, 63 Variation of net fair value of the protected debt (hedge) of the derivative Variation of net fair value of the protected debt (hedge) of the derivative Variation of net fair value of the protected debt (hedge) of the derivative Coxilha Seca Coxilha Seca [Member] Coxilha Seca Non Subsidiary Companies [Domain] Non Subsidiary Companies [Domain] Non Subsidiary Companies [Domain] Long term purchase of capital commitment [Table] Long term purchase of capital commitment [Table] Schedule long term purchase of capital commitment. Proceeds from issue of bonds, notes and debentures Issuance of simple debentures Proceeds from issue of bonds, notes and debentures Jirau Energia S.A. Jirau Energia S.A. This member stands for Jirau Energia S.A. Accounts Receivable, net Adjustments for decrease (increase) in trade accounts receivable Summary of amounts recognized as actuarial gains and losses in the Statement of Comprehensive Income Disclosure of amounts recognized as actuarial gains and losses in the statement of comprehensive income explanatory [table text block] The disclosure of amounts recognized as actuarial gains and losses in the Statement of Comprehensive Income. Intangible assets in progress Intangible assets under development [member] Capital market Foreign Currency, Capital Market Borrowings [Member] This member stands for bonuses, debentures and commercial paper borrowings in foreign currency. Trade and other non-current payables Trade and other non-current payables Business combination Acquisitions through business combinations, intangible assets and goodwill Derivative financial instruments Current derivative financial liabilities CEB Lajeado S.A. CEB Lajeado [Member] This member stands for Ceb Lajeado. Schedule disclosing information related to onerous contracts provision Schedule disclosing information related to onerous contracts provision Schedule disclosing information related to onerous contracts provision. Total assets Identifiable Assets Acquired Recognised As Of Acquisition Date Identifiable Assets Acquired Recognised As Of Acquisition Date Structured investments Structured debt, amount contributed to fair value of plan assets Percentage of participations for fair value investments Fair Value Of Investments In Equity Participations Percentage Percentage of participations for fair value investments in equity. 008/2011 Electricity Transmission Concessions, Corporate, Agreement, 12 [Member] This member stands for electricity transmission concessions, corporate, agreement, 12. Coxilha Negra II Coxilha Negra II [Member] Coxilha Negra II PNB Class B preferred shares This member stands for equity instruments that are senior in some aspects to ordinary shares, but subordinate to debt instruments in terms of claim, classified as Class B. Belo Monte Transmissora de Energia S.A. - BMTE Belo Monte Transmissora de Energia SPE S.A This member stands for Belo Monte Transmissora de Energia. Total current liabilities excluding liabilities associated to assets held for sale Current liabilities Current liabilities other than liabilities included in disposal groups classified as held for sale Total Customers Trade receivables Average rate Average Rate On Current Loans And Receivables The average rate on current loans and receivables. Maximum percentage of equity in SPEs that will be held Maximum Percentage Of Equity Interest In Special Purpose Entities To Be Held Maximum percentage of equity that will be held in the Special Purpose Entities (SPEs). NDF US$, January 31,2028 NDF US$, January 31,2028 [Member] NDF US$, January 31,2028 FINANCING ACTIVITIES Cash flows from (used in) financing activities [abstract] Monetary variation incurred Increase (Decrease) From Monetary Variation Incurred, Financial Assets Gain/Loss on actuarial obligations arising from remeasurement Gain/Loss on plan assets Gain/Loss on actuarial obligations arising from remeasurement Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income Transenergia Renovável S.A. Transenergia Renovável S.A. [Member] Transenergia Renovável S.A. Energy purchased for resale Energy purchased for resale from related party transactions The amount of energy purchased for resale from related party transactions. Credit agreement - US$ vs CDI, December 3,2027 Credit agreement - US$ vs CDI, December 3,2027 [Member] Credit agreement - US$ vs CDI, December 3,2027 Total comprehensive income for the year Comprehensive income Diluted earnings per share (in R$ per share) Diluted earnings per share of continuous operation (in R$ per share) Diluted earnings (loss) per share from continuing operations Chesf Chesf This member stands for Companhia Hidro Eletrica do Sao Francisco (CHESF). Reimbursement right Adjustments for decrease (increase) in reimbursement rights Adjustments for decrease (increase) in reimbursement rights to reconcile profit (loss) to net cash flow from (used in) operating activities. Debenture Issuance – AXIA Energia Sul Debenture Issuance – AXIA Energia Sul 2 [Member] Debenture Issuance – AXIA Energia Sul 2 Annulment Action and Tax Enforcement related to IRPJ and CSLL (AXIA Energia) Annulment Action and Tax Enforcement related to IRPJ and CSLL (AXIA Energia) [Member] Annulment Action and Tax Enforcement related to IRPJ and CSLL (AXIA Energia) Interest rate on compulsory loan Compulsory Loan, Interest Rate The interest rate on compulsory loan, per annum. Compulsory loans are tax collected from consumers to generate resources to expand electric sector. Current and deferred income tax and social security contributions Current and Deferred Income Tax and Social Contribution The amount of current and deferred income tax and social contributions. Investments recognized at fair value Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] Other Other inflows (outflows) of cash, classified as investing activities Balance at beginning of period Balance at end of period Contract assets Contract assets INCOME TAX AND SOCIAL CONTRIBUTION Description of accounting policy for income tax [text block] Disclosure of Remeasurement - RTP Disclosure Of Remeasurement - RTP [Table Text Block] Disclosure Of Remeasurement - RTP Parent Company Parent Company [Member] Trading Symbol Trading Symbol Schedule of the accounting estimates evaluated as the most critical by the Management of Eletrobras and its subsidiaries and its details Disclosure Of Detailed Information About Accounting Judgements And Estimates, Explanatory [Table Text Block] The disclosure of detailed information about accounting judgements and estimates. UHE Passo de São João – AXIA Energia Sul UHE Passo de São João – AXIA Energia Sul [Member] UHE Passo de São João – AXIA Energia Sul Financial Charges Current borrowings Others Other non-current liabilities Classes of other provisions [domain] Classes of other provisions [domain] Onerous contracts provision [abstract] Onerous contracts provision [abstract] Transnorte Energia - TNE Transnorte Energia - TNE [Member] Transnorte Energia - TNE 010/2011 Electricity Transmission Concessions, Corporate, Agreement, 33 [Member] This member stands for electricity transmission concessions, corporate, agreement, 33. Debentures - IPCA vs CDI, June 15,2031 Debentures - IPCA vs CDI, June 15,2031 [Member] Debentures - IPCA vs CDI, June 15,2031 Inflation adjustment Increase In Obligations For Privatization Of The Company, Through Inflation Adjustments The increase in obligations for privatization of the company, resulting from inflation adjustments. AXIA Energia, Belo Monte Transmissora de Energia – AXIA Energia Norte, 2029 AXIA Energia, Belo Monte Transmissora de Energia – AXIA Energia Norte, 2029 [Member] AXIA Energia, Belo Monte Transmissora de Energia – AXIA Energia Norte, 2029 Effect on cash flow: Effect on cash flow: Effect On Cash Flow [Abstract] No definition available. Notice of Violation - PIS/COFINS Notice of Violation PIS or COFINS [Member] This member stands for notice of violation - PIS/COFINS. Power Supply Power Supply [Member] This member stands for receivables arising from energy provisioning/supply. OPERATIONAL CONTEXT Disclosure of general information about financial statements [text block] Total current assets excluding assets held for sale Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners 2028 Long term purchase commitment year two [Member] This member stands for Long term purchase commitment year two. Transfers Increase (decrease) through transfers, property, plant and equipment STATUTORY Statutory reserve [member] Obligations of Law No. 14,182/2021 Obligations of Law and Order, Current Represents the obligations of law and order current. Receivables Type [Domain] Receivables Type [Domain] This member stands for receivable type. IRPJ and CSLL calculated at nominal rates Tax expense (income) at applicable tax rate Monetary adjustments - hydrographic basins Monetary Adjustments - Hydrographic Basins The amount of monetary income (expense) from hydrographic basins. In progress Construction in progress [member] ASSETS Assets [abstract] Reimbursement rights, net Reimbursement Rights, Net Reimbursement Rights, Net Provision for litigation Concession Agreements [Member] This member stands for concession agreements. Other Institutions Domestic Currency, Other Institutions Borrowings [Member] This member stands for debt with Apollo FIDC and BR Eletro FIDC in domestic currency. Schedule of maturity analysis of installments of the obligations with CDE and Regeneration of River Basins Schedule Of Maturity Analysis Of Installments For Privatization Of The Company, Explanatory [Table Text Block] The disclosure of detailed information about maturity analysis of obligations for privatization of the company pursuant to Law No. 14,182/2021. Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 3 [Member] Cash Reinforcement – AXIA Energia Sul 3 CURRENT Current assets [abstract] Actuarial gains/losses arising from experience adjustments Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on changes in effect of limiting net defined benefit asset to asset ceiling excluding interest income or expense RESTRICTED CASH Description of Accounting Policy for Funds [Policy Text Block] The description of the entity's accounting policy for restricted funds. NON-CURRENT Non-current assets [abstract] Income tax disclosure [table] Income tax disclosure [table] Schedule disclosing information related to income tax disclosures. Cash and cash equivalents Cash and cash equivalents recognised as of acquisition date Document Information [Line Items] Document Information [Line Items] São Manoel São Manoel [Member] São Manoel Shares in treasury - Compulsory loan agreement Increase in Treasury Shares, Compulsory Loan Agreement The increase in equity resulting from compulsory loan agreement. Type of taxes [axis] Type of taxes [axis] The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table. Disclosure of defined benefit plans [abstract] Disclosure of defined benefit plans [abstract] Jaguari Jaguari [Member] Jaguari Financial results, net Other finance income (cost) AXIA Energia ,Transnorte Energia - TNE, 2036 AXIA Energia ,Transnorte Energia - TNE, 2036 [Member] AXIA Energia ,Transnorte Energia - TNE, 2036 Schedule of dividends receivable Disclosure of Dividends and Interest Receivables [Table Text Block] Tabular disclosure of dividends and interests on equity investments receivable. Equity equivalence Increase (decrease) in investment by equity method The increase (decrease) in investment value because of equity equivalence approach. Centrais Elétricas de Santa Catarina S.A - CELESC Centrais Elétricas de Santa Catarina S.A - CELESC [Member] Centrais Elétricas de Santa Catarina S.A - CELESC 006/2009 Electricity Transmission Concessions, Corporate, Agreement, 21 [Member] This member stands for electricity transmission concessions, corporate, agreement, 21. RAP RAP [Member] RAP Schedule of amounts recognized in the balance sheet Disclosure of retirement benefit obligations recorded in balance sheet [table text block] Disclosure of information pertaining to amounts of retirement benefit obligations recorded in balance sheet. Leases Leases This member stands for the leases category of financial liabilities. Software Computer software [member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 1 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 1 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 1 Cash and Banks Cash Investments (Interests) Equity investments [member] Disclosure of analysis of other comprehensive income by item [line items] Disclosure of analysis of other comprehensive income by item [line items] INVESTING ACTIVITIES Cash flows from (used in) investing activities [abstract] Advances for future capital increase Advances for future capital increase, non-current liabilities The amount of advances for future capital increase, classified as non-current liability. Consórcio UHE Baguari Consórcio UHE Baguari [Member] Consórcio UHE Baguari Schedule of reconciliation of expense with income tax and social contributions Ifrs Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. Normal participant contributions Participant contributions made during the financial year Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan by plan participants Discontinued operations Comprehensive income from discontinued operations, attributable to owners of parent Current service cost Defined Benefit Plans Service Cost Amount of service cost expense recognized related to defined benefit plan. CASH AND CASH EQUIVALENTS Description of accounting policy for determining components of cash and cash equivalents [text block] Usina Hidrelétrica Mauá - AXIA Energia Sul Usina Hidrelétrica Mauá - AXIA Energia Sul [Member] Usina Hidrelétrica Mauá - AXIA Energia Sul Teles Pires Participações S.A.¹ Teles Pires Participaes S.A. This member stands for Teles pires participacoes. Debenture Issuance – AXIA Energia Nordeste Debenture Issuance – AXIA Energia Nordeste 3 [Member] Debenture Issuance – AXIA Energia Nordeste 3 Increase in profit (loss) of combined entity as if combination occurred at beginning of period Increase In Profit (Loss) Of Combined Entity As If Combination Occurred At Beginning Of Period Increase In Profit (Loss) Of Combined Entity As If Combination Occurred At Beginning Of Period Number of treasury shares (in shares) Opening balance (in shares) Closing balance (in shares) Number Of Treasury Shares Number Of Treasury Shares Total liabilities Identifiable Liabilities Acquired Recognised As Of Acquisition Date Identifiable Liabilities Acquired Recognised As Of Acquisition Date INVESTMENTS Investment [abstract] No definition available. Cumulative conversion adjustments Other comprehensive income, net of tax, exchange differences on translation of foreign operations TOTAL NON CURRENT ASSETS Non-current assets Non-current assets Foreign‑Currency Loan, December 21, 2026 Foreign‑Currency Loan, December 21, 2026 [Member] Foreign‑Currency Loan, December 21, 2026 NDF US$ and Primary Aluminum, February 1,2026 NDF US$ and Primary Aluminum, February 1,2026 [Member] NDF US$ and Primary Aluminum, February 1,2026 Disclosure of defined benefit plans [table] Disclosure of defined benefit plans [table] Increase in cash and cash equivalents from discontinued operations Increase (decrease) in cash and cash equivalents, discontinued operations Non-current Non-current contract assets Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Adjustments to reconcile profit with cash generated by operations Adjustments to reconcile profit (loss) Basic Network Of The Existing System Basic Network Of The Existing System [Member] Basic Network Of The Existing System Schedule of market value of investees accounted for using the equity method that are quoted on the stock exchange Schedule of market value of invested companies [Table Text Block] Tabular disclosure of market value of invested companies. Actuarial assumptions [domain] Actuarial assumptions [domain] 008/2005 Electricity Transmission Concessions, Corporate, Agreement, 59 [Member] This member stands for electricity transmission concessions, corporate, agreement, 59. 7th Debenture Issuance – Series 1, July 15, 2032 7th Debenture Issuance – Series 1, July 15, 2032 [Member] 7th Debenture Issuance – Series 1, July 15, 2032 BRF Energia BRF Energia [Member] BRF Energia AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 2 AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 2 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 2 Current Current contract assets Provision for losses on investments Accumulated Provision for Losses on Investments The amount of provision for loss on investments. Schedule of changes and composition of the fair value of assets Disclosure of changes in plan assets and plan obligations explanatory [table text block] The disclosure of Changes in plan assets and plan obligations of the defined benefit plans. Restricted Cash: Cash, Restricted [Abstract] No definition available. Rate increase (as a percent) Percentage of reasonably possible increase in actuarial assumption Disclosure of detailed information about financial instruments [table] Disclosure of detailed information about financial instruments [table] Post-employment benefit obligations Post-employment benefit obligations This member stand for Post-employment benefit obligations. Tax Effect of Hydrological Risk Renegotiation Tax Effect of Hydrological Risk Renegotiation The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to hydrological risk renegotiation. Schedule of share in guarantee Schedule of share in guarantee [Table Text Block] Tabular disclosure of shares in guarantee. Provisions for Litigation Civil Non-current legal proceedings provision Regulatory fees Non-current Non-current regulatory liability The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Compulsory loan Compulsory Loan, Current Interest Payable The amount of interest payable on compulsory loan, classified as current. Compulsory loans are tax collected from consumers to generate resources to expand electric sector. Debentures of the first series Debentures of the first series This member stand for debentures of first series Entity Interactive Data Current Entity Interactive Data Current Current Current Unrestricted Marketable Securities The amount of unrestricted marketable securities, classified as current. ACCUMULATED EARNINGS Accumulated Earnings [Member] Accumulated Earnings Interligação Elétrica do Madeira S.A. - IE Madeira Interligao Eltrica do Madeira S.A. - IE Madeira [Member] This member stands for Interligacao Eletrica do Madeira S.A.. Acquisitions through business combinations, net operating revenue Acquisitions Through Business Combinations, Net Operating Revenue Acquisitions Through Business Combinations, Net Operating Revenue 008/2024 Electricity Transmission Concessions, Corporate, Agreement, 68 [Member] Electricity Transmission Concessions, Corporate, Agreement, 68 LONG‑TERM OPERATING COMMITMENTS Description Of Accounting Policy For Contractual Capital Commitments [Policy Text Block] Description Of Accounting Policy For Contractual Capital Commitments Transfers assets held for sale Decrease through classified as held for sale, property, plant and equipment, including adjustment The decrease in property, plant and equipment through classification as held for sale or inclusion in a disposal group classified as held for sale, including adjustment. Triângulo Mineiro Transmissora S.A. Triângulo Mineiro Transmissora S.A [Member] Triângulo Mineiro Transmissora S.A Disclosure of attribution of expenses by nature to their function [line items] Disclosure of attribution of expenses by nature to their function [line items] Table of active and inactive mortality Defined benefit plan, demographic assumption table of active and inactive mortality [Member] This member stands for table of active and inactive mortality in the demographic assumptions of defined benefit plan to calculate the defined benefit obligation. AXIA Energia Transmissora Seridó S.A. AXIA Energia Transmissora Seridó S.A. [Member] AXIA Energia Transmissora Seridó S.A. Expected credit losses individually assessed Expected credit losses individually assessed [member] Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] EQUITY ATTRIBUTABLE TO OWNERS OF THE COMPANY Equity attributable to owners of parent [member] NDF US$ and Primary Aluminum, September 1,2026 NDF US$ and Primary Aluminum, September 1,2026 [Member] NDF US$ and Primary Aluminum, September 1,2026 Subtotal to distributed Retained Earnings To Be Allocated The amount of retained earnings to be allocated. EARNINGS PER SHARE - Continuing operations Earnings Per Share, Continued Operations [Abstract] No definition available. Individual assets or cash-generating units [domain] Individual assets or cash-generating units [domain] Types of retirement benefits Disclosure of types of retirement benefits [table text block] The tabular disclosure on types of retirement benefits. Summary of long-term commitments, related mainly to contracts for the purchase of electricity and fuel Schedule of long-term commitments, related mainly to contracts for the purchase of electricity and fuel [table text block] The tabular disclosure for long-term commitments, related mainly to contracts for the purchase of electricity and fuel. Export Credit Note Export Credit Note This member stands for export credit note. Lease liabilities Lease Liabilities Recognized As Of Acquisition Date Lease Liabilities Recognized As Of Acquisition Date Entity Central Index Key Entity Central Index Key Corporate Transmission Projects – AXIA Energia Nordeste Corporate Transmission Projects – AXIA Energia Nordeste 3 [Member] Corporate Transmission Projects – AXIA Energia Nordeste 3 Aggravated percentage Defined benefit plan, actuarial assumption, aggravating percentage The percentage of aggravating in actuarial valuation of assumption in defined benefit plan. Summary of defined benefit plans obligation Summary Of Defined Benefit Estimated Obligations [Table Text Block] The tabular disclosure of defined benefit estimated obligations. CASH AND CASH EQUIVALENTS Disclosure of cash and cash equivalents [text block] 006/2024 Electricity Transmission Concessions, Corporate, Agreement, 70 [Member] Electricity Transmission Concessions, Corporate, Agreement, 70 Deferred taxes Deferred tax assets recognised as of acquisition date Financial income Contratual assets, finance income The amount of income associated with interest and other financing activities of contractual assets. Charges Increase In Obligations For Privatization Of The Company, Through Charges The increase in obligations for privatization of the company, resulting from charges. AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 [Member] AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 AXIA Energia, Angra III, 2036 AXIA Energia, Angra III, 2036 [Member] AXIA Energia, Angra III, 2036 Taxes and contributions Non-current asset Non-current receivables from taxes other than income tax Casa Nova II and III Wind Farms – AXIA Energia Nordeste Casa Nova II and III Wind Farms – AXIA Energia Nordeste [Member] Casa Nova II and III Wind Farms – AXIA Energia Nordeste (–) Pension funds Pension funds, amount contributed to fair value of plan assets The amount that pension funds constitute of the fair value of defined benefit plan assets. Method of assessment of expected credit losses [axis] Method of assessment of expected credit losses [axis] Empresa Metropolitana de Águas e Energia S.A. - EMAE Empresa Metropolitana de guas de Energia S.A. - EMAE This member stands for empresa metropolitana de aguas e energia S.A. - EMAE. Net cash provided by investing in activities of discontinued operations Cash flows from (used in) investing activities, discontinued operations Participations in OCI of associates Increase (Decrease) Through Participations in Other Comprehensive Income Loss of Associates, Equity The increase (decrease) in equity resulting from participations in other comprehensive income loss of associates. Others Other income (expenses), by nature The amount of income (expenses) that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of income (expenses). AXIA Energia, Angra I, 2027 AXIA Energia, Angra I, 2027 [Member] AXIA Energia, Angra I, 2027 Other comprehensive results Share of total comprehensive income of associates and joint ventures accounted for using equity method Certificado de depósito interbancário, rate Certificado De Depósito Interbancário, Rate Certificado De Depósito Interbancário, Rate Companhia Energética Sinop Companhia Energetica Sinop S.A. - SINOP This member stands for Companhia Energetica Sinop. 012/2024 Electricity Transmission Concessions, Corporate, Agreement, 72 [Member] Electricity Transmission Concessions, Corporate, Agreement, 72 Research and Development Projects Research and Development Projects [Member] Research and Development Projects Write-offs Impairment loss recognised in property, plant and equipment The amount of impairment loss recognised in property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] Commercial Notes, AXIA Energia, Maturity 8/23/2028 Commercial Notes, AXIA Energia, Maturity 8/23/2028 [Member] Commercial Notes, AXIA Energia, Maturity 8/23/2028 Statement of cash flows [abstract] Statement of cash flows [abstract] AXIA Energia, UHE São Domingos – AXIA Energia Sul, 2028 AXIA Energia, UHE São Domingos – AXIA Energia Sul, 2028 [Member] AXIA Energia, UHE São Domingos – AXIA Energia Sul, 2028 Schedule of the balance of provisions for investments Schedule of impairment losses on investments [Table Text Block] Tabular disclosure of investments recognized at fair value. Debentures, AXIA Energia Sul, Maturity 04/15/2031 Debentures, AXIA Energia Sul, Maturity 04/15/2031 [Member] Debentures, AXIA Energia Sul, Maturity 04/15/2031 PAES/REFIS PAES / REFIS This member stands for taxes related to PAES/REFIS. Loans, financing and debentures Current Loans And Receivables And Current Charges The amount of current loans and receivables and current current charges for interest. Debentures, AXIA Energia Norte, Maturity 06/28/2028 Debentures, AXIA Energia Norte, Maturity 06/28/2028 [Member] Debentures, AXIA Energia Norte, Maturity 06/28/2028 Alagar Telecon Alagar Telecon [Member] Alagar Telecon Tariff cycle approval, amount Tariff Cycle Approval, Amount Tariff Cycle Approval, Amount Restricted cash Non-current Non-current restricted cash and cash equivalents OPERATING EXPENSES OPERATING EXPENSES No definition available. REGULATORY FEES Disclosure of Sector Specific Charges [Text Block] Entire disclosure of Sector specific charges. Number of notes issued Number Of Notes Issued Number of notes issued by the entity. 018/2009 Electricity Transmission Concessions, Corporate, Agreement, 51 [Member] This member stands for electricity transmission concessions, corporate, agreement, 51. Schedule of non-subsidiaries guarantees Disclosure Of Guarantees Explanatory To Non Subsidiaries [Table Text Block] Tabular disclosure of Non subsidiaries guarantees Batalha UHE Batalha The member stands for UHE Batalha. Acquisition / capital injection in shareholdings, net of cash acquired Cash Flows Used In Obtaining Control Of Subsidiaries Or Other Businesses, Capital Injection In Shareholdings Cash Flows Used In Obtaining Control Of Subsidiaries Or Other Businesses, Capital Injection In Shareholdings LONG-TERM OPERATING COMMITMENTS LONG-TERM OPERATING COMMITMENTS No definition available Discount rate without the SUDAM/SUDENE tax benefit Description Of Discount Rates Used In Current Estimate Of Value In Use Without Tax Benefit The discount rate without tax benefit, used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. DIVIDENDS AND INTEREST RECEIVABLE Disclosure Of Shareholders Compensation Receivables Explanatory [Text Block] The entire disclosure for dividends and interests on equity investments receivable. Equity method investments Equity interest Investments accounted for using equity method Disclosure of financial instruments by type of interest rate [table] Disclosure of financial instruments by type of interest rate [table] Total Income (expense), related party transactions The amount of total income (expense) resulting from related party transactions. Schedule of financial revenue and financial expenses Disclosure Of Financial Revenue And Financial Expenses, Explanatory [Table Text Block] The disclosure of detailed information about financial revenue and financial expenses. Hydroelectric Power Plants (HPPs) Ownership Interest Hydroelectric Power Plants (HPPs) Ownership Interest [Member] Hydroelectric Power Plants (HPPs) Ownership Interest Paranaíba Transmissora de Energia S.A. Paranaíba Transmissora de Energia S.A [Member] Paranaíba Transmissora de Energia S.A Financial liabilities Non-derivative financial liabilities, undiscounted cash flows Rate decrease (as a percent) Percentage of reasonably possible decrease in actuarial assumption Projection of average wage increase (%) Actuarial assumption of expected rates of salary increases Credit agreement - US$ vs CDI, June 18,2026 Credit agreement - US$ vs CDI, June 18,2026 [Member] Credit agreement - US$ vs CDI, June 18,2026 Asset ceiling Effect of asset ceiling [member] Classes of contingent liabilities [domain] Classes of contingent liabilities [domain] Provision for guarantees in noncurrent liabilities Noncurrent Provision For Guarantees The amount of noncurrent provisions for guarantees. TJLP (long-term interest rate) TJLP (long-term interest rate) This member stands for Brazil BNDES long term interest rate. Total Financial revenues Finance income Banking market Foreign Currency, Banking Market Borrowings [Member] This member stands for loans and financing with financial institutions in foreign currency. Document Shell Company Report Document Shell Company Report After 2031 Long term purchase commitment year after five [Member] This member stands for Long term purchase commitment year after five. Provisions recognized Disclosure of other provisions [line items] Employer contributions paid during the fiscal year Decrease (increase) in net defined benefit liability (asset) resulting from resulting from contributions to plan by employer Loans, financing and bonds receivable Loans, Financing And Bonds Receivable Amount of loans, financing and bonds receivable by the company. Vamcruz I Participações S.A Vamcruz I Participaes S.A. [Member] This member stands for Vamcruz I Participaes S.A.. (–) Operational liabilities Operational liabilities, amount contributed to fair value of plan assets The amount that operational liabilities constitute of the fair value of defined benefit plan assets. Credit agreement, August 16,2027 Credit agreement, August 16,2027 [Member] Credit agreement, August 16,2027 Cash and cash equivalents Cash and cash equivalent [Member] This member stands for the cash and cash equivalents category of financial assets. Additional dividends proposed for 2023 Additional dividends proposed for 2023 [Member] Additional dividends proposed for 2023 Minimum mandatory dividend (as a percent) Fiscal Year Minimum Mandatory Dividends Payable, Percentage The current fiscal year minimum mandatory dividends payable, as a percentage of net profits. Treasury shares - Shares issued Increase (decrease) through treasury share transactions, equity Bonus share issuance Treasury Shares, Additional Issuance Treasury Shares, Additional Issuance Actual annual actuarial discount interest rate (%) Actuarial assumption of discount rates Fair value Fair value of investments in associates for which there are quoted market prices Remeasurement expense Remeasurement Expense Remeasurement Expense Payroll Estimated Employee Related Liabilities, Current The amount of total estimated employee related liabilities, classified as current. Average Amortization Rate, Intangible assets other than goodwill Amortisation rate, intangible assets other than goodwill Reimbursement rights Reimbursement rights This member stands for financial asset reimbursement of AIC. Participation % Proportion of ownership interest in associates and joint ventures It represents the proportion of ownership interest in associates and joint ventures. Net receivables Loans And Receivables And Interest Charges, Net The net amount of aggregate loans and receivables and aggregate charges for interest. Expected yield on plan assets Expected yield on plan assets The decrease (increase) in the net defined benefit liability (asset) resulting from the expected return on plan assets. Average rate on bonds Average Interest Rate On Bonds Receivable The average rate of interest on bonds receivable by the company. Schedule of reservation rights and obligations Disclosure of reimbursement rights [text block] Others Others. This member stands for customer that the entity does not separately disclose in the same statement or note. Retiro Baixo Energética S.A. Retiro Baixo Energética S.A. [Member] Retiro Baixo Energética S.A. Coxilha Negra IV Coxilha Negra IV [Member] Coxilha Negra IV AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2035 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2035 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2035 Suppliers Adjustments for increase (decrease) in trade accounts payable Bonds - US$ vs CDI, February 4,2025 Bonds - US$ vs CDI, February 4,2025 [Member] Bonds - US$ vs CDI, February 4,2025 Others Other temporary differences [member] Provision Compulsory Loan, Provision The amount of provision for compulsory loan. Debentures, AXIA Energia, Maturity 04/15/2026 Debentures, AXIA Energia, Maturity 04/15/2026 [Member] Debentures, AXIA Energia, Maturity 04/15/2026 Percentage of ownership equity interest acquired control achievement Percentage Of Ownership Equity Interest Acquired, Control Achievement Percentage Of Ownership Equity Interest Acquired, Control Achievement Non-controlled companies guarantees Non-controlled companies guarantees [Member] Non-controlled companies guarantees OPERATING ACTIVITIES Cash flows from (used in) operating activities [abstract] Acauã EOL Acau Represents the information pertaining to EOL Acau. Exchange rate changes Foreign Exchange Translation Variations The amount of exchange variations. Capital market Domestic Currency, Capital Market Borrowings [Member] This member stands for bonuses, debentures and commercial paper borrowings in domestic currency. ISA Energia ISA Energia [Member] ISA Energia Document Period End Date Document Period End Date Payment of obligations with CDE and revitalization of basins - principal Payment Of Obligations With Energy Development Account And Revitalization Of Basins, Principal, Classified As Financing Activities The cash outflow payments of obligations with CDE and revitalization of basins - principal, classified as financing activities. Non-adjusting events after reporting period [domain] Non-adjusting events after reporting period [domain] Overdue up to 90 days Not later than three months [member] Others Other inflows (outflows) of cash, classified as financing activities Other Tax Matters [Domain] Other Tax Matters [Domain] Other Tax Matters [Domain] Sundry obligations Miscellaneous Related Party Transactions The amount of miscellaneous related party transactions. 002/2009 Electricity Transmission Concessions, Corporate, Agreement, 30 [Member] This member stands for electricity transmission concessions, corporate, agreement, 30. Classes of financial instruments [axis] Classes of financial instruments [axis] NDF US$ and Primary Aluminum, June 1,2026 NDF US$ and Primary Aluminum, June 1,2026 [Member] NDF US$ and Primary Aluminum, June 1,2026 Debentures, AXIA Energia Norte, Maturity 07/15/2032 Debentures, AXIA Energia Norte, Maturity 07/15/2032 [Member] Debentures, AXIA Energia Norte, Maturity 07/15/2032 Debentures, AXIA Energia Nordeste, Maturity 01/15/2029 Debentures, AXIA Energia Nordeste, Maturity 01/15/2029 [Member] Debentures, AXIA Energia Nordeste, Maturity 01/15/2029 Regulatory revenue - transmission contracts Regulatory Revenue - Transmission Contracts Regulatory Revenue - Transmission Contracts Tijoá Participações e Investimentos S.A. Tijoá Participações e Investimentos S.A. [Member] Tijoá Participações e Investimentos S.A. Classes of financial assets [axis] Classes of financial assets [axis] Chapada do Piau I Chapada do Piau I The member stands for Chapada do Piau II. AMOUNT ATTRIBUTED TO NON-CONTROLLING INTERESTS Profit (loss) from continuing operations attributable to non-controlling interests Schedule of movements in transmission concessions classified as contractual assets Schedule of Movements in Transmission Concessions Classified as Contractual Assets [Table Text Block] Schedule of movements in transmission concessions classified as contractual assets. Claim for alleged losses to end consumers (AXIA Energia Nordeste) Claim for alleged losses to end consumers (AXIA Energia Nordeste) [Member] Claim for alleged losses to end consumers (AXIA Energia Nordeste) Land Land [member] Payment of principal Decrease In Global Reversion Reserve, Principal Payments, Operating Activities Decrease In Global Reversion Reserve, Principal Payments, Operating Activities Debentures, AXIA Energia Norte, Maturity 09/15/2034 Debentures, AXIA Energia Norte, Maturity 09/15/2034 [Member] Debentures, AXIA Energia Norte, Maturity 09/15/2034 Furnas - Maturity 23/08/2026 Commercial Notes, Furnas, Maturity August 23, 2026 [Member] This member stands for commercial notes of Furnas, maturing on August 23, 2026. ELECTRICITY CONCESSIONS AND AUTHORIZATIONS Public service electric power concessions [line items] Line items represent concepts that are used to disclose reportable information associated with domain members defined in one or many axes of the table. Call option, equity interest to be acquired Call Option, Equity Interest To Be Acquired Call Option, Equity Interest To Be Acquired Share repurchase program, authorized, amount Share Repurchase Program, Authorized, Amount Operating segments Operating segments [member] AXIA Energia, UHE Belo Monte - Norte Energia, 2042 AXIA Energia, UHE Belo Monte - Norte Energia, 2042 [Member] AXIA Energia, UHE Belo Monte - Norte Energia, 2042 009/2010 Electricity Transmission Concessions, Corporate, Agreement, 56 [Member] This member stands for electricity transmission concessions, corporate, agreement, 56. 2030 Later than four years and not later than five years [member] Revenue since acquisition date Revenue of acquiree since acquisition date AXIA Energia, Linha Verde Transmissora – AXIA Energia Norte, 2033 AXIA Energia, Linha Verde Transmissora – AXIA Energia Norte, 2033 [Member] AXIA Energia, Linha Verde Transmissora – AXIA Energia Norte, 2033 EARNINGS PER SHARE Earnings per share [abstract] Range [axis] Range [axis] Nova Era Teresina Transmissora S.A. Nova Era Teresina Transmissora S.A. [Member] Nova Era Teresina Transmissora S.A. Debt Protection Derivative Debt Protection Derivative [Member] Debt Protection Derivative II - Electricity transmission concessions - corporate Electricity Transmission Concessions II, Corporate [Member] This member stands for II - Electricity transmission concessions - corporate. PROFIT (LOSS) BEFORE TAXES Profit (Loss) for the year before income tax and social contribution Profit (loss) before tax Hydroelectric Power Plants (HPPs) Hydroelectric Power Plants (HPPs) [Member] Hydroelectric Power Plants (HPPs) AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2034 AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2034 [Member] AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2034 Capital reserves and Authorized Equity Instruments granted Capital reserve Shareholder remuneration Shareholder Remuneration, Current Shareholder Remuneration SHAREHOLDERS EQUITY Disclosure of share capital, reserves and other equity interest [text block] 7th Debenture Issuance – Series 2, July 15, 2032 7th Debenture Issuance – Series 2, July 15, 2032 [Member] 7th Debenture Issuance – Series 2, July 15, 2032 Suppliers Suppliers This member stands for other trade accounts payable. Defined benefit plans, demographic assumptions tables [axis] Defined benefit plans, demographic assumptions tables [axis] The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table. Investments Disclosure of Investments [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Total for all joint ventures Total for all joint ventures [member] Services Services expense Disclosure of other provisions [table] Disclosure of other provisions [table] Share repurchases Treasury Shares, Repurchase Of Shares An entity's own equity instruments, held by the entity or other members of the consolidated group, from repurchase of shares. Civil Civil This member stands for a contingent liability for civil legal proceedings. Classes of financial instruments [domain] Classes of financial instruments [domain] Disclosure of detailed information about business combination [table] Disclosure of detailed information about business combination [table] RGR RETURNS [Abstract] RGR RETURNS Receipt of dividends and interest on equity Interest received, classified as operating activities 012/2011 Electricity Transmission Concessions, Corporate, Agreement, 54 [Member] This member stands for electricity transmission concessions, corporate, agreement, 54. Amounts recognized in Other Comprehensive Income Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] CONTINUING OPERATIONS Continued Operations [Abstract] No definitions available. Other Individuals and Legal Entities Other Individuals and Legal Entities [Member] Other Individuals and Legal Entities Shares in treasury - Dissident shareholders Decrease in Treasury Shares, Dissident Shareholders The decrease in equity resulting from decision of dissident shareholders. Reimbursement obligations Reimbursement obligations This member stands for other reimbursement obligations. Pension benefit plans Pension benefit plans This member stands for defined benefit pension plan. Total loans, financing and debentures Beginning of the year End of the year Borrowings Company Tariff Cycle Approval, Name [Domain] Company Tariff Cycle Approval, Name [Domain] Company Tariff Cycle Approval, Name [Domain] Additions Judicial Settlement, Additions Judicial Settlement, Additions Financial Investments Short-term investments, classified as cash equivalents Nova Era Ceará Transmissora S.A. Nova Era Ceará Transmissora S.A. [Member] Nova Era Ceará Transmissora S.A. Ifrs Scenario, Unspecified [Domain] Ifrs Scenario, Unspecified [Domain] Any scenario, that is, the particular reporting scenario is left unspecified. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures. Opening balance Closing balance Non-Cash Global Reversal Reserve Returns Non-Cash Global Reversal Reserve Returns Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] Major customers [domain] Major customers [domain] Net cash from (used in) financing activities Cash flows from (used in) financing activities Long term purchase commitment [Domain] Long term purchase commitment [Domain] This member stands for long term purchase of commitment. Counterparties [axis] Counterparties [axis] Debentures, AXIA Energia Norte, Maturity 04/15/2031 Debentures, AXIA Energia Norte, Maturity 04/15/2031 [Member] Debentures, AXIA Energia Norte, Maturity 04/15/2031 Funil Uhe Funil Two [Member] This member stands for UHE Funil two. EARNINGS PER SHARE Description of accounting policy for earnings per share [text block] Financial instruments Financial instruments [Member] Financial instruments PREFERRED Preference shares [member] Banco Itau Banco Itau This member stand for Banco Itau. Loans, financing and debentures Non-current Noncurrent Loans, Financing And Bonds Receivable Amount of noncurrent loans, financing and bonds receivable by the company. Schedule of expected maturity of undiscounted benefits of post-employment defined benefit plans Disclosure of expected maturities of non-discounted benefits [table text block] The disclosure of expected maturation of non-discounted benefits of post-employment defined benefit plans. Accumulated Amortization and Impairment Accumulated depreciation, amortisation and impairment [member] Debt contract Plan assets, at fair value RAP Cycle by Company [Line Items] RAP Cycle by Company [Line Items] RAP Cycle by Company [Line Items] Treasury shares Treasury shares Opening balance Closing balance Treasury shares ASSETS AND LIABILITIES HELD FOR SALE Disclosure of assets and liabilities classified as held for sale and discontinued operations explanatory [Text Block] The entire disclosure for assets and liabilities classified as held for sale. Other liabilities Other Liabilities Related Party Transactions The amount of other liabilities resulting from related party transactions Default interest Default interest This member stands for a provision for the application of default interest. Disclosure of financing and loans receivable [table] Disclosure of financing and loans receivable [table] Schedule disclosing information pertaining to financing and loans receivables. Average discount rate for renewed contracts Average Discount Rate for Renewed Contracts Average discount rate for renewed contracts. Statement of changes in equity [table] Statement of changes in equity [table] Actuarial assumptions [axis] Actuarial assumptions [axis] Disclosure of Original RAP and Adjustments Disclosure of Original RAP and Adjustments [Table Text Block] Disclosure of Original RAP and Adjustments Reimbursement rights Non-current Non-current reimbursement rights The amount of non current reimbursement right representing the amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle obligation recognized as a separate asset. NDF US$, August 31,2026 NDF US$, August 31,2026 [Member] NDF US$, August 31,2026 Loans, financing and debentures Current Current borrowings and current portion of non-current borrowings Net exchange and monetary changes Gains (Losses) on Foreign Exchange and Monetary Variations, Net Amount of gains (losses) in foreign exchanges and monetary variations, net. Furnas - Maturity 23/08/2028 Commercial Notes, Furnas, Maturity August 23, 2028 [Member] This member stands for commercial notes of Furnas, maturing on August 23, 2028. Serra da Mesa UHE Serra da Mesa The member stands for UHE Serra da Mesa. Loans, financing and debentures Borrowings recognised as of acquisition date 2027 Long term purchase commitment year one [Member] This member stands for Long term purchase commitment year one. Investico Investico [Member] Investico Operating Revenue [Table] Operating Revenue [Table] Operating Revenue [Table] Minimum Bottom of range [member] Scenario (50%) Scenario (50%) This member stands for scenario of fifty percentage variation. Impairment (see note 19) Operational Impairment Of Long Term Assets The amount of operational impairment of long term assets. Categories of related parties [axis] Categories of related parties [axis] IMPAIRMENT OF LONG-LIVED ASSETS Description of accounting policy for impairment of non-financial assets [text block] Other Deductions On Operating Income Deductions Operating revenues Other Deductions On Operating Income Total amount of deducted from operating income. Value of investments made by concessionaires and permit-holders limited to annual revenue percentage Value of investments made by concessionaires and permit-holders limited to annual revenue percentage The percentage of value of investments made by concessionaires and permit-holders limited to annual revenue. 017/2012 Electricity Transmission Concessions, Corporate, Agreement, 35 [Member] This member stands for electricity transmission concessions, corporate, agreement, 35. NET INCOME FOR THE YEAR Net income for the year Profit / (Net loss) Profit (loss) Cash flow hedge adjustment Other comprehensive income, net of tax, cash flow hedges Class "B" preferred shares Class "B" preferred shares This member stands for Preferred Shares Class B. 007/2010 Electricity Transmission Concessions, Corporate, Agreement, 38 [Member] This member stands for electricity transmission concessions, corporate, agreement, 38. Credit agreement, December 9,2025 Credit agreement, December 9,2025 [Member] Credit agreement, December 9,2025 Shareholders name [domain] Shareholders name [domain] This member stands for all shareholders. Furnas Furnas [Member] This member stands for Furnas Centrais Eletricas S.A. (FURNAS). O&M Revenue Revenue from operation and maintenance, including renewed concessions and lines The amount of revenue arising from providing of operation and maintenance services, including renewed concessions and lines AXIA Energia Transmissora Paracatu S.A. AXIA Energia Transmissora Paracatu S.A. [Member] AXIA Energia Transmissora Paracatu S.A. TOTAL NON-CURRENT LIABILITIES Non-Current liabilities Non-current liabilities Cerro Chato II EOL Cerro Chato II This member stands for EOL CERRO CHATO II. Property, plant and equipment Property, plant and equipment recognised as of acquisition date ELECTRICITY CONCESSIONS AND AUTHORIZATIONS ELECTRICITY CONCESSIONS AND AUTHORIZATIONS No definition Available. State of Piauí (AXIA Energia) State of Piauí (AXIA Energia) [Member] State of Piauí (AXIA Energia) AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 2 AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 2 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 2 Baguari I Geração de Energia S.A. Baguari I Geração de Energia S.A. [Member] Baguari I Geração de Energia S.A. Document Registration Statement Document Registration Statement INFORMATION BY BUSINESS SEGMENT Disclosure of entity's operating segments [text block] Associates Total for all associates [member] Current Trade and other current payables [abstract] Credit agreement - US$ vs CDI, June 20,2029 Credit agreement - US$ vs CDI, June 20,2029 [Member] Credit agreement - US$ vs CDI, June 20,2029 7th Debenture Issuance – Series 3, July 15, 2035 7th Debenture Issuance – Series 3, July 15, 2035 [Member] 7th Debenture Issuance – Series 3, July 15, 2035 Other post-employment benefit obligations Other post-employment benefit obligations This member stands for other post-employment benefit obligations. Revenue from financial investments Investment income Disclosure of contingent liabilities [table] Disclosure of contingent liabilities [table] Present value of defined benefit obligation Present value of defined benefit obligation [member] Retiro Baixo Retiro Baixo [Member] This member stands for Retiro Baixo, an acquiree of the company. Assets and liabilities not classified as held for sale Assets and liabilities not classified as held for sale [member] Results of acquisitions and divestments¹ Results of acquisitions and divestments expense Results of acquisitions and divestments expense ESTIMATES AND CRITICAL JUDGMENTS Estimates And Critical Judgments [Policy Text Block] Estimates And Critical Judgments Clients Customers Receivable Related Party Transactions The amounts of customers receivable resulting from related party transactions. Business Contact Business Contact [Member] Principal Current Loans, Financing And Bonds Receivable Amount of current loans, financing and bonds receivable by the company. Health and life insurance plans Health and life insurance plans This member stands for health and life insurance plans. Passive items Liabilities [abstract] Debenture Issuance – AXIA Energia Norte Debenture Issuance – AXIA Energia Norte 2 [Member] Debenture Issuance – AXIA Energia Norte 2 Debentures Debentures This member stands for debentures. Payroll, social security and labor obligations Payroll, Social Security And Labor Obligations Recognized As Of Acquisition Date Payroll, Social Security And Labor Obligations Recognized As Of Acquisition Date Taxes payable Taxes Payable Recognized On Acquisition Date Taxes Payable Recognized On Acquisition Date Payment term Ifrs Debt Instrument, Term Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Carrying amount Carrying amount [member] Economic value added by the concessionaire Percentage Economic value added by the concessionaire Percentage The percentage of economic value added by the concessionaire. National Treasury Notes (LFT) National Treasury Financial Note [Member] This member stands for national treasury financial note. Foreign currency Foreign Currency This member stands for Foreign currency borrowings. Receipt from disposal/acquisition of assets Disposal of Equity Investments The amount related to cash flow from disposal of equity investments. Short-term benefits Key management personnel compensation, short-term employee benefits Security Exchange Name Security Exchange Name Annual Allowable Revenue Received [Table] Annual Allowable Revenue Received [Table] Annual Allowable Revenue Received [Table] Measured at fair value Fair value Investments in equity instruments designated at fair value through other comprehensive income Junco II EOL Junco II Represents the information pertaining to EOL Junco II. Impairment of asset held for sale Impairment Of Asset Held For Sale Impairment Of Asset Held For Sale Lago Azul Transmissão S.A. Lago Azul Transmisso S.A. Represents the information pertaining to Lago Azul Transmisso S.A. Coqueirinho 2 EOL Coqueirinho 2 Represents the information pertaining to EOL Coqueirinho 2. LOANS, FINANCING AND DEBENTURES. LOANS, FINANCING AND DEBENTURES. No definition available. RESTRICTED CASH Restricted Cash and Cash Equivalents [Text Block] The entire disclosure of restricted cash and cash equivalents. Schedule of capital stock distributed among shareholders and type of shares Schedule of capital stock distributed among shareholders and type of shares [table text block] The tabular disclosure of capital stock represent book entry shares and distributed among share holders and type of shares. Restricted percentage (%) Investment pledged percentage as guarantee The percentage of investment pledged as guarantee in judicial proceeding. Net worth Assets (liabilities) Disclosure For Obligation For Privatization Of The Company [Table] Disclosure For Obligation For Privatization Of The Company [Table] Schedule of information pertaining to obligations for privatization of the company. Mandatory minimum dividends Mandatory Reserves, Dividends Mandatory Reserves, Dividends Shareholders name [axis] Shareholders name [axis] The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table. Capão do Inglês Parque Elico Capo do Ingls Represents the information pertaining to Parque Elico Capo do Ingls Transfers Transfers Provisions, Other Provisions Transfers Provisions, Other Provisions FINANCIAL ASSETS Financial assets, at fair value Restricted cash Current Current restricted cash and cash equivalents Lajeado Energia S.A. Lajeado Energia S.A. [Member] This member stands for Lajeado Energia. HIGHLIGHTS OF 2022 HIGHLIGHTS OF 2025 No definition available. Actuarial Costs/Expenses Actuarial Costs/Expenses Actuarial Costs/Expenses Debenture Issuance – AXIA Energia Nordeste Debenture Issuance – AXIA Energia Nordeste 1 [Member] Debenture Issuance – AXIA Energia Nordeste 1 Current Current Loans, Financing And Bonds Receivable And Current Charges Amount of current loans, financing and bonds receivable by the company and current charges. Current service cost Increase in net defined benefit liability (asset) resulting from current service cost Bank Credit Notes (CCB) Bank Credit Notes [Member] This member stands for Bank Credit Notes (CCB). Material Material Expense The amount of material expense incurred by the company. Operating revenue, net Operating Revenue, Net Operating Revenue, Net Bonds, February 4,2030 Bonds, February 4,2030 [Member] Bonds, February 4,2030 Impairment By Segment Disclosure Impairment By Segment Disclosure [Table Text Block] Impairment By Segment Disclosure 010/2007 Electricity Transmission Concessions, Corporate, Agreement, 31 [Member] This member stands for electricity transmission concessions, corporate, agreement, 31. PROINFA Quota PROINFA contribution This member stands for the Federal government program for the development of projects to diversify Brazil's energy grid and foster alternative sources of electrical energy, managed by the entity and seeks regional solutions for the use of renewable energy sources. Contractual revenue Revenue From Construction Contracts And Return From Investments The amount of revenue arising from construction contracts and return from investments. AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2031 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2031 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2031 Social contribution Social Contribution [Member] This member stands for temporary differences from social contributions. Schedule of Taxes and contributions Disclosure Of Detailed Information About Taxes And Contributions, Explanatory [Table Text Block] The disclosure of detailed information about taxes and contributions. Interest income, commissions, exchange rates and variations and financial expenses Interest Income, Commissions and Exchange Rates and Variations Related Party Transactions Amount of income or expense from interest, commissions and exchange rates and variations, related party transactions. 005/2009 Electricity Transmission Concessions, Corporate, Agreement, 57 [Member] This member stands for electricity transmission concessions, corporate, agreement, 57. Fixed and intangible assets write off Fixed And Intangible Asset Write Off Amount of Fixed And Intangible Asset Write Off. Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] Share of other comprehensive income of equity accounted investments Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 2 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 2 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 2 São Januário EOL So Janurio Represents the information pertaining to EOL So Janurio. Share of other comprehensive income of equity accounted investments Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax Guaranteed annual returns (as a percent) Marketable Securities, Percentage Of Guaranteed Annual Returns The percentage of guaranteed annual returns on marketable securities. 001/2009 Electricity Transmission Concessions, Corporate, Agreement, 23 [Member] This member stands for electricity transmission concessions, corporate, agreement, 23. Others Other current liabilities Issuance of debentures Issuance of Debentures [Member] This member stands for 5th issue of simple debentures by Eletrobras. Weighted average duration of defined benefit obligation Weighted average duration of defined benefit obligation Other components of comprehensive income Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] Level 1 of fair value hierarchy Level 1 of fair value hierarchy [member] Debentures Bonds Receivable Amount of bonds receivable by the company. PROPERTY, PLANT AND EQUIPMENT Disclosure of detailed information about property, plant and equipment [line items] Disclosure of reimbursement rights [abstract] Disclosure of reimbursement rights [abstract] Interligao Eltrica do Madeira S.A. SPE Interligao Eltrica Do Madeira S.A [Member] Spe Interligao Eltrica Do Madeira SA RECOVERABLE VALUE OF LONG-TERM ASSETS Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] CCC Fuel Consumption Account – CCC [Member] Fuel Consumption Account – CCC IRPJ IRPJ [Member] IRPJ Others Other Restriction Of Funds [Member] This member stands for other restriction of funds. 13th‑salary charges provision Provision For End Of Year Bonus, Current Represents the provision for end-of-year bonus, as of balance sheet date, classified as current. 006/2005 Electricity Transmission Concessions, Corporate, Agreement, 36 [Member] This member stands for electricity transmission concessions, corporate, agreement, 36. Payment of dividends and interest on equity Dividend payment Dividends paid, classified as financing activities AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2031 AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2031 [Member] AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2031 Fundo de Energia do Sudeste e Centro-Oeste - FESC Southeast and Midwest Energy Fund This member stands for Southeast and Midwest Energy Fund. Fundo Nacional de Desenvolvimento Científico e Tecnológico (FNDCT) Fundo Nacional de Desenvolvimento Científico e Tecnológico (FNDCT) [Member] Fundo Nacional de Desenvolvimento Científico e Tecnológico (FNDCT) NDF US$, October 29,2027 NDF US$, October 29,2027 [Member] NDF US$, October 29,2027 Gain (loss) on change in fair value of hedged item used as basis for recognizing hedge ineffectiveness Gain (loss) on change in fair value of hedged item used as basis for recognising hedge ineffectiveness AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2036 AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2036 [Member] AXIA Energia, Corporate Transmission Projects – AXIA Energia Nordeste, 2036 004/2011 Electricity Transmission Concessions, Corporate, Agreement, 52 [Member] This member stands for electricity transmission concessions, corporate, agreement, 52. Operating provisions (reversals) Adjustments for provisions SACE - US$ vs CDI, December 4,2034 SACE - US$ vs CDI, December 4,2034 [Member] SACE - US$ vs CDI, December 4,2034 TMT TMT [Member] TMT Serena Geração S/A Serena Geração S/A [Member] Serena Geração S/A Credit agreement, December 21,2026 Credit agreement, December 21,2026 [Member] Credit agreement, December 21,2026 ASSETS HELD FOR SALE Description of accounting policy for non-current assets or disposal groups classified as held for sale [text block] Net asset (liability) Deferred tax liability (asset) Energy Supply Revenue from supply or sale of generated electricity The amount of revenue arising from supply or sale of generated electricity. TOTAL CURRENT LIABILITIES Current liabilities São Clemente EOL So Clemente Represents the information pertaining to EOL So Clemente. AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 1 AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 1 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 1 AXIA Energia, Cash Reinforcement – AXIA Energia Norte, 2026 AXIA Energia, Cash Reinforcement – AXIA Energia Norte, 2026 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Norte, 2026 Provisions Provisions, related party transactions The amount of provisions in related party transactions. Individual assets or cash-generating units [axis] Individual assets or cash-generating units [axis] Property, plant and equipment, Intangible assets, Right‑of‑use assets Property, Plant And Equipment, Intangible Assets, Right-Of-Use Assets Recognized As of Acquisition Date Property, Plant And Equipment, Intangible Assets, Right-Of-Use Assets Recognized As of Acquisition Date Increase in defined benefit obligation Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption Receivables Type [Axis] Receivables Type [Axis] Information by type of receivables. Taxes and contributions Current liabilities Current payables on social security and taxes other than income tax Temporary difference unused tax losses and unused tax credits Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Loans and financing reserve – Teles Pires Loans and financing reserve – Teles Pires [Member] Loans and financing reserve – Teles Pires 007/2006 Electricity Transmission Concessions, Corporate, Agreement, 28 [Member] This member stands for electricity transmission concessions, corporate, agreement, 28. Daily charge per concession term extension Daily Charge Per Concession Term Extension Daily Charge Per Concession Term Extension CHANGES IN INVESTMENTS Change of investments [abstract] No definition available. Debentures, AXIA Energia, Maturity 04/15/2031, Two Debentures, AXIA Energia, Maturity 04/15/2031, Two [Member] Debentures, AXIA Energia, Maturity 04/15/2031, Two Debt Result Debt Result [Member] Debt Result Statement of changes in equity [abstract] Statement of changes in equity [abstract] Measurement [domain] Measurement [domain] Companhia Energética do Ceará - COELCE Companhia Energtica do Cear - COELCE This member stands for Companhia Energetica do Ceara. Schedule of movements in obligations of Law No. 14,182/2021 Disclosure Of Movements In The Obligations For Privatization Of The Company, Explanatory [Table Text Block] The disclosure of detailed information about movements in the obligations for privatization of the company pursuant to Law No. 14,182/2021. Investments in equity instruments designated at fair value through other comprehensive income [axis] Investments in equity instruments designated at fair value through other comprehensive income [axis] Increase in revenue of acquiree if combination occurred at beginning of period Increase In Revenue Of Acquiree If Combination Occurred At Beginning Of Period Increase In Revenue Of Acquiree If Combination Occurred At Beginning Of Period Solar Power Generation Plant (SPP) Solar Power Generation Plant (SPP) [Member] Solar Power Generation Plant (SPP) Credit agreement, June 18,2026 Credit agreement, June 18,2026 [Member] Credit agreement, June 18,2026 Types of risks [domain] Types of risks [domain] Working Capital Strengthening – AXIA Energia Norte Working Capital Strengthening – AXIA Energia Norte 3 [Member] Working Capital Strengthening – AXIA Energia Norte 3 (-) ECL Expected Credit Loss [Member] This member stands for expected credit loss. Subsidiaries [axis] Subsidiaries [axis] Payment of interests Interest paid, classified as operating activities Schedule of Sector Specific Charges [Table ] Schedule of Sector Specific Charges [Table ] Schedule disclosing information related to Sector-Specific Charges. INFORMATION BY BUSINESS SEGMENT Description of accounting policy for segment reporting [text block] (-) ICMS ICMS ICMS Net defined benefit liability (asset) [domain] Net defined benefit liability (asset) [domain] Total Restricted cash and cash equivalents AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2031 AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2031 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2031 UHE São Domingos – AXIA Energia Sul UHE São Domingos – AXIA Energia Sul [Member] UHE São Domingos – AXIA Energia Sul Debentures, Madeira Energia S.A, Maturity 06/28/2038 Debentures, Madeira Energia S.A, Maturity 06/28/2038 [Member] Debentures, Madeira Energia S.A, Maturity 06/28/2038 American Depository Shares, Class C American Depository Shares, Class C [Member] American Depository Shares, Class C Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Interligação Elétrica do Madeira S.A. - IE Madeira Interligação Elétrica do Madeira S.A. - IE Madeira [Member] Interligação Elétrica do Madeira S.A. - IE Madeira Net debt Net debt Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Derivative financial instruments Non-current derivative financial liabilities OTHER COMPREHENSIVE INCOME Accumulated other comprehensive income [member] Fair value through other comprehensive income Financial assets measured at fair value through other comprehensive income, category [member] Debentures, June 16,2031 Debentures, June 16,2031 [Member] Debentures, June 16,2031 Legal reserve Legal Reserve Adjustment The amount of adjustment due to legal reserve from net income (loss). Foz do Chapecó UHE Foz do Chapeco The member stands for UHE Foz do Chapeco. Equatorial Energia Pará Equatorial Energia Par This member stands for Centrais Eletricas do Para. Debentures, July 16,2035 Debentures, July 16,2035 [Member] Debentures, July 16,2035 Implementation of Actions - Compulsory Loan (see note 28) Implementation of Actions - Compulsory Loan Implementation of Actions - Compulsory Loan Profit or income sharing Profit or Income Sharing, Current Represents the profit or income sharing as of balance sheet date, classified as current. Joint operations [axis] Joint operations [axis] SPE Nova Era Janapu Transmissora S.A. SPE Nova Era Janapu Transmissora S.A. [Member] This member stands for SPE Nova Era Janapu Transmissora S.A. Schedule of transactions with related parties Disclosure of transactions between related parties [text block] TOTAL LIABILITIES AND EQUITY Equity and liabilities Debentures, September 17,2035 Debentures, September 17,2035 [Member] Debentures, September 17,2035 Disclosure of Investments [Table] Disclosure of Investments [Table] Schedule disclosing information related to investments. Tax Tax This member stands for a provision for tax legal proceedings. Casa Nova III EOL Casa Nova III This member stands for EOL Casa Nova III. NDF US$ and Primary Aluminum, October 1,2025 NDF US$ and Primary Aluminum, October 1,2025 [Member] NDF US$ and Primary Aluminum, October 1,2025 Business combinations [domain] Business combinations [domain] REIMBURSEMENT RIGHTS AND OBLIGATIONS Disclosure Of Reservation Rights And Obligation [Text Block] The entire disclosure on reservation rights and obligations. 014/2011 Electricity Transmission Concessions, Corporate, Agreement, 60 [Member] This member stands for electricity transmission concessions, corporate, agreement, 60. Barra do Rio Chapéu Barra do Rio Chapéu [Member] Barra do Rio Chapéu Type Of Contracts, RAP [Table] Type Of Contracts, RAP [Table] Type Of Contracts, RAP COMPULSORY LOAN Disclosure Of Compulsory Loan [Text Block] The entire disclosure for compulsory loan. Dividends / Interest on own capital receivable Interest on equity and dividends receivable from associated companies or joint venture accounted for under equity method of accounting The amount of interest on equity and dividends receivable from associated companies or joint venture accounted for under equity method of accounting. 012/2010 Electricity Transmission Concessions, Corporate, Agreement, 61 [Member] Electricity Transmission Concessions, Corporate, Agreement, 61 REGULATORY FEES Sector Specific Charges [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. INSS/FGTS INSS / FGTS - Payroll Contributions This member stands for taxes related to INSS/FGTS. Additional dividends proposed for 2025 Additional dividends proposed for 2025 [Member] Additional dividends proposed for 2025 Contractual asset Insurance contracts that are assets Additional provision Default Risk, Additional Provision Represents the amount of additional provision for default risk. Joint ventures [domain] Joint ventures [domain] VSB VSB [Member] VSB Disclosure Of Significant Investments In Marketable Securities Table Disclosure Of Significant Investments In Marketable Securities Table Schedule disclosing information relating to marketable securities. Scenario I - Likely Scenario I - Likely This member stands for scenario of likely occurrence. Joint operations [domain] Joint operations [domain] Non-current Noncurrent Obligations For Privatization Of The Company The amount of noncurrent obligations for privatization of the company. Total current Short-term employee benefits accruals Itumbiara UHE Itumbiara The member stands for UHE Itumbiara. Suspension request period Suspension Request Period The period granted for suspension request. Norte Energia S.A. - NESA Norte Energia S.A - NESA Represents the information pertaining to Norte Energia S.A. - NESA City Area Code City Area Code PROVISIONS AND CONTINGENT LIABILITIES Description of accounting policy for contingent liabilities and contingent assets [text block] Credit agreement, February 27,2026 Credit agreement, February 27,2026 [Member] Credit agreement, February 27,2026 Reversals (Constitutions) on estimated losses on investments (see note 16) Provision/(Reversal) for Losses on Investments The amount of provision/(Reversal) for losses on investments Teiú 2 EOL Tei 2 Represents the information pertaining to EOL Tei 2. United States of America, Dollars United States of America, Dollars Disclosure of net defined benefit liability (asset) [table] Disclosure of net defined benefit liability (asset) [table] Consórcio Energético Cruzeiro do Sul Consórcio Energético Cruzeiro do Sul [Member] Consórcio Energético Cruzeiro do Sul Diluted loss per share Diluted earnings per share [abstract] NDF US$ and Primary Aluminum, August 1,2026 NDF US$ and Primary Aluminum, August 1,2026 [Member] NDF US$ and Primary Aluminum, August 1,2026 Cash – AXIA Energia Cash – AXIA Energia [Member] Cash – AXIA Energia Categories of financial liabilities [domain] Categories of financial liabilities [domain] Increase (decrease) through other changes, equity Increase (decrease) through other changes, equity Accelerated depreciation Accelerated depreciation [Member] This member stands for Accelerated depreciation RELATED PARTY TRANSACTIONS Disclosure of related party [text block] Caldas Novas Transmissão Caldas Novas Transmisso S.A. [Member] Represents the information pertaining to Caldas Novas Transmisso S.A. Attorney fees Attorney Fees [Member] This member stands for attorney fees. Purchase/sale of electricity Electricity Purchase Related Party Transaction Amount of electricity purchase resulting from related party transactions. Schedule of provisions during the year Reconciliation of change in other provision [Table Text Block] Tabular disclosure of reconciliation of change in other provision. Balance Sheet Amounts Recognized In Balance Sheet [Abstract] No definition available. Transnorte Energia S.A. Transnorte Energia S.A. The member stands for Transnorte Energia S.A.. PIS / COFINS - Sales Taxes PIS/COFINS Represents information pertaining to pis and cofins. Financial revenue FINANCIAL RESULT No definition available. Working Capital Strengthening – AXIA Energia Norte Working Capital Strengthening – AXIA Energia Norte 2 [Member] Working Capital Strengthening – AXIA Energia Norte 2 Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] AXIA Energia, Casa Nova II and III Wind Farms – AXIA Energia Nordeste, 2031 AXIA Energia, Casa Nova II and III Wind Farms – AXIA Energia Nordeste, 2031 [Member] AXIA Energia, Casa Nova II and III Wind Farms – AXIA Energia Nordeste, 2031 Deferred income tax and social contribution on fair value through OCI Deferred Income Tax And Social Contribution On Fair Value Through OCI Deferred Income Tax And Social Contribution On Fair Value Through OCI Amortizations Decrease Through Amortizations, Intangible Assets And Goodwill The decrease in intangible assets and goodwill resulting from amortizations. Proposed dividends Increase (decrease) through proposed dividends The increase (decrease) in equity resulting from proposed dividends. (-) Write-off Loss from write-off of Itaipu receivables Write-offs Decrease through write-off, financial assets Reductions obtained as a result of payments made Judicial Settlements, Reductions Obtained As A Result Of Payments Made Amount of reductions obtained pursuant to judicial settlements as a result of payments made. Belo Monte Transmissora - BMTE Belo Monte Transmissora - BMTE [Member] Belo Monte Transmissora - BMTE Transfers for Assets Held for Sale Decrease through classified as held for sale, intangible assets and goodwill, including adjustment The decrease in intangible assets and goodwill resulting from classification as held for sale or inclusion in a disposal group classified as held for sale, including adjustments. Primary series Primary series This member stands for primary series of 5th issue of simple debentures by Eletrobras. Amortized cost Amortized cost This member stands for measurement based on amortized cost. ADDITIONAL PROPOSED DIVIDENDS Additional Proposed Dividends [Member] This member stands for a component of equity representing an additional proposed dividends. Past due status [axis] Past due status [axis] NDF US$ and Primary Aluminum, December 1,2025 NDF US$ and Primary Aluminum, December 1,2025 [Member] NDF US$ and Primary Aluminum, December 1,2025 Shares remuneration program Decrease Through Share Remuneration Program Decrease Through Share Remuneration Program NON-CURRENT Non-current liabilities [abstract] RAP - transmission contracts, rate RAP - Transmission Contracts, Change Rate RAP - Transmission Contracts, Change Rate Deferred income tax and social contribution and actuarial gains or losses Income Tax Relating Social Contribution On Actuarial Gains Or Losses The amount of deferred income tax and social contribution in other comprehensive income that will not be reclassified to profit or loss. Additional dividends proposed for 2024 Additional dividends proposed for 2024 [Member] Additional dividends proposed for 2024 Disclosure of detailed information about intangible assets [abstract] Disclosure of detailed information about intangible assets [abstract] Total liabilities Liabilities, related party transactions The amount of total liabilities resulting from related party transactions. Cerro Chato III EOL Cerro Chato III This member stands for EOL CERRO CHATO III. Loans and financing receivable Loans and financing, related party transactions The amount of loans and financing receivable from related party transactions. Outstanding Balance Borrowings, Under Guarantee, Total The total amount of the outstanding loans which guaranteed by the entity in whole or part. 2027 Later than one year [member] Restricted shares (in shares) Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates, Restricted Shares The number of restricted shares in the entity held by the entity or by its subsidiaries or associates. Credit agreement - US$ vs CDI, February 27,2026 Credit agreement - US$ vs CDI, February 27,2026 [Member] Credit agreement - US$ vs CDI, February 27,2026 Maturity analysis for managing liquidity risk Disclosure of maturity analysis for non-derivative financial liabilities [line items] Energia dos Ventos VI S.A. Energia dos Ventos VI S.A. [Member] This member stands for Energia dos Ventos VI S.A. Post-employment benefit Non-current net defined benefit liability Repurchase Agreements Repurchase Agreement [Member] This member stands for repurchase agreements. Construction cost – transmission Adjustment for Construction Cost Transmission Adjustment for construction cost - transmission to reconcile profit (loss) to net cash flow from (used in) operating activities. The accounting balances of financial assets and liabilities represent a reasonable approximation of fair value Disclosure of detailed information about financial instruments [text block] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 3 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 3 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 3 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 3 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 3 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 3 Schedule of provision for onerous contracts Disclosure of provisions for onerous contracts [Table text block] The tabular disclosure of provision for onerous contracts. Classes of other provisions [axis] Classes of other provisions [axis] BASIS OF PREPARATION AND PRESENTATION OF FINANCIAL STATEMENTS BASIS OF PREPARATION AND PRESENTATION OF FINANCIAL STATEMENTS No definition available. Eliminations Material reconciling items [member] Share repurchase program, authorized, number of shares (in shares) Share Repurchase Program, Authorized, Number of Shares Balance at beginning of period Balance at ending of period Judicial deposits Legal proceedings provision Debentures, AXIA Energia, Maturity 05/15/2029 Debentures, AXIA Energia, Maturity 05/15/2029 [Member] Debentures, AXIA Energia, Maturity 05/15/2029 019/2010 Electricity Transmission Concessions, Corporate, Agreement, 22 [Member] This member stands for electricity transmission concessions, corporate, agreement, 22. Loss attributable to each class of shares - Discontinued Operation Profit (loss) from discontinued operations attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share Impact of each scenario on company results, sensitivity analysis Sensitivity analysis for types of market risk [text block] Empresa de Energia São Manoel S.A. Empresa de Energia Sao Manoel S.A. This member stands for Empresa de energia sao manoel S.A. AXIA Energia AXIA Energia [Member] AXIA Energia (+) Derivative financial instruments - debt protection Liability Derivative financial liabilities Nova Era Solar Enki S.A. Nova Era Solar Enki S.A. [Member] Nova Era Solar Enki S.A. Deferred income tax and social contribution on cash flow hedge adjustments Deferred Income Tax Relating To Social Contribution On Cash Flow Hedge Adjustment The amount of deferred income tax and social contribution on net income, in other comprehensive income that will not be reclassified to profit or loss. Statement Of Income [Table] Statement Of Income [Table] Schedule reflecting Statement of Income Disclosure of maturity analysis for non-derivative financial liabilities [table] Disclosure of maturity analysis for non-derivative financial liabilities [table] COMMON ON Ordinary shares [member] Liabilities associated with assets held for sale Liabilities included in disposal groups classified as held for sale Chapecoense Geração S.A. Chapecoense Gerao S.A. This member stands for Chapecoense Gerao S.A. Assumptions adopted Disclosure of assumptions adopted for sensitivity analysis [Table Text Block] The disclosure of assumptions adopted for sensitivity analysis. EARNINGS PER SHARE Disclosure of earnings per share [text block] (–) Investment funds Investment in funds, amount contributed to fair value of plan assets The amount that investment funds constitute of the fair value of defined benefit plan assets. Gross carrying amount Costs Gross carrying amount [member] Suppliers Total trade and other current payables Trade and other current payables Total for all individual assets or cash-generating units Total for all individual assets or cash-generating units [member] Auction No. 004/2025 – Lot 7A¹ Electricity Transmission Concessions, Corporate, Agreement, 65 [Member] Electricity Transmission Concessions, Corporate, Agreement, 65 Boa Esperança UHE Boa Esperana This member stands for UHE Boa Esperana (Castelo Branco). Others Adjustments for increase (decrease) in other liabilities Financial charges Adjustments for finance costs Government Group Federal Government This member stands for Federal government. Other liabilities Other Liabilities Recognized As Of Acquisition Date Other Liabilities Recognized As Of Acquisition Date 2026 Up to 1 year Not later than one year [member] Actuarial debt agreements Actuarial Debt Contracts Related Party Transactions The amount of actuarial debt of the entity. Basis of preparation and measurement Description of accounting policy for basis of preparation of [Policy Text Block] The description of the entity's accounting policy for basis of presentation. Expected credit losses Expected Credit Losses Expected Credit Losses Total (debit)/credit of IRPJ and CSLL of transactions IRPJ and CSLL Adjustments To Income Tax Expense IRPJ and CSLL Adjustments To Income Tax Expense Additional Dividends Proposal [Domain] Additional Dividends Proposal [Domain] Additional Dividends Proposal [Domain] Regulatory remeasurements - Transmission Regulatory Remeasurement Of Transmission Contracts It represents the amount of regulatory remeasurement of transmission contracts. Discount rate with the SUDAM/SUDENE tax benefit Description Of Discount Rates Used In Current Estimate Of Value In Use With Tax Benefit The discount rate with tax benefit, used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. Trade and other current receivables [abstract] Trade and other current receivables [abstract] Fair value through result Financial liabilities at fair value through profit or loss, category [member] Auction No. 004/2025 – Lot 6B¹ Electricity Transmission Concessions, Corporate, Agreement, 66 [Member] Electricity Transmission Concessions, Corporate, Agreement, 66 Nova Era Catarina Transmissora S.A. Nova Era Catarina Transmissora S.A. [Member] Nova Era Catarina Transmissora S.A. NDF US$, December 30,2027 NDF US$, December 30,2027 [Member] NDF US$, December 30,2027 Loans, financing and debentures Non-current Non-current portion of non-current borrowings Property, plant and equipment [member] Property, plant and equipment [member] Disclosure of financial assets [line items] Disclosure of financial assets [line items] FIXED ASSETS, NET Description of accounting policy for property, plant and equipment [text block] Financial expenses Financial Expenses No definition available. (b) Consideration transferred Consideration transferred, acquisition-date fair value Loans and borrowings obtained and debentures obtained Fund raised Proceeds from borrowings, classified as financing activities Companhia Hidrelétrica Teles Pires S.A. Companhia Hidreletrica Teles Pires S.A [Member] This member stands for Companhia Hidreltrica Teles Pires S.A. Payment of leases – principal Payments of lease liabilities, classified as financing activities NDF US$, June 30,2027 NDF US$, June 30,2027 [Member] NDF US$, June 30,2027 Junco I EOL Junco I Represents the information pertaining to EOL Junco I. NDF US$, February 27,2026 NDF US$, February 27,2026 [Member] NDF US$, February 27,2026 CD Plan CD Plan This member stands for information about CD Plan. AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 1 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 1 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2027 1 Disclosure of impairment loss and reversal of impairment loss [abstract] Disclosure of impairment loss and reversal of impairment loss [abstract] Increases / (decreases) in operating liabilities Increases (Decreases) in Operating Liabilities [Abstract] No definition available. Construction cost construction Cost expense construction Cost expense Schedule of generation concessions and authorizations Disclosure of detailed information about service concession arrangements [text block] Asset Swap Transaction [Domain] Asset Swap Transaction [Domain] Asset Swap Transaction [Domain] Mata de Santa Genebra - AXIA Energia Mata de Santa Genebra - AXIA Energia [Member] Mata de Santa Genebra - AXIA Energia Weighted average number of shares in thousand (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Losses from judicial disputes, indemnification limit amount Losses From Judicial Disputes, Indemnification Limit Amount Losses From Judicial Disputes, Indemnification Limit Amount Schedule of suppliers Disclosure Of Trade And Other Payables [Table Text Block] Tabular disclosure of trade and other payables. Total long term assets excluding investments, fixed assets and intangible assets Long term assets excluding investments, fixed assets and intangible assets The amount of long term assets excluding investments, fixed assets and intangible assets. Basis of consolidation and investments in subsidiaries, jointly controlled and associated companies Description Of Accounting Policy For Subsidiaries Joint Ventures And Associates [Policy Text Block] The description of the entity's accounting policy for subsidiaries, joint ventures and associates. Floating interest rate Floating interest rate [member] Judicial deposits Non Current Guarantees And Restricted Deposits The amount of non-current guarantees and restricted deposits. Unrecognized / reversed deferred taxes Deferred tax expense (income) relating to origination and reversal of temporary differences Payroll Adjustments for Increase (Decrease) in Payroll Adjustments for (decrease) increase in payroll to reconcile profit (loss) to net cash flow from (used in) operating activities. Environmental and Social Projects – Fixed Assets Increase (Decrease) Through Fixed Assets, Other Provisions Increase (Decrease) Through Fixed Assets, Other Provisions AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 2 AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 2 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2028 2 Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Auction No. 004/2025 – Lot 6A¹ Electricity Transmission Concessions, Corporate, Agreement, 64 [Member] Electricity Transmission Concessions, Corporate, Agreement, 64 Major components of tax expense (income) [abstract] Major components of tax expense (income) [abstract] Belo Monte Transmissora de Energia – AXIA Energia Norte Belo Monte Transmissora de Energia – AXIA Energia Norte [Member] Belo Monte Transmissora de Energia – AXIA Energia Norte Transfer to held for sale Increase (Decrease) Transfer To Held For Sale, Financial Assets Increase (Decrease) Transfer To Held For Sale, Financial Assets Entorno 2 Entorno 2 [Member] Entorno 2 Regulatory remeasurements – transmission contracts Adjustment for Regulatory Remeasurements - Transmission Contracts Adjustment for regulatory remeasurements - transmission contracts to reconcile profit (loss) to net cash flow from (used in) operating activities. Credit agreement, December 3,2027 Credit agreement, December 3,2027 [Member] Credit agreement, December 3,2027 NDF US$, December 30,2026 NDF US$, December 30,2026 [Member] NDF US$, December 30,2026 016/2012 Electricity Transmission Concessions, Corporate, Agreement, 29 [Member] This member stands for electricity transmission concessions, corporate, agreement, 29. MGE Transmissão S.A. MGE Transmissao S.A. This member stands for MGE Transmissao S.A.. EQUITY Equity [abstract] Disclosure of detailed information about financial instruments [abstract] Disclosure of detailed information about financial instruments [abstract] Golden Shares Golden Shares [Member] The information pertaining to Golden shares [Member] RGR Quota RGR Share This member stands for the Global Reversal Reserve (RGR) contributed by concessionaires of the public service of electrical energy. The fund is managed by the entity in accordance to the established law but not controlled. OBLIGATIONS OF LAW No. 14,182/2021 Disclosure For Obligations For Privatization Of The Company, Explanatory [Text Block] The entire disclosure for obligations for privatization of the company pursuant to Law No. 14,182/2021. Bank of Brasil, CDI Interest Rate Plus 2.0% p.a Bank of Brazil, CDI Interest Rate Plus 2 Percent [Member] This member stands for Bank of Brazil CDI interest rate + 2.0% p.a. Regular Tax Regime Regular Tax Regime [Member] Regular Tax Regime Schedule of changes in the present value of actuarial obligations Disclosure of changes in plan obligations explanatory [table text block] The disclosure of changes plan obligations of the defined benefit plans. Reversal (provision) for litigation Provision for litigation of civil and labor lwasuits Amount of provision for litigation of civil and labor lwasuits. AMOUNT ATTRIBUTED TO OWNERS OF THE COMPANY Profit attributable to each class of shares - Continuing Operation Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Amortization of Principal Decrease In Obligations For Privatization Of The Company, Through Amortization Of Principal The decrease in obligations for privatization of the company, resulting from amortization of principal. AXIA Energia Norte AXIA Energia Norte [Member] AXIA Energia Norte % of shares in relation to the total Adjusted weighted average shares percentage The percentage of adjusted weighted shares outstanding for the specified class with respect to total no. of adjusted weighted shares outstanding. Total Regulatory liabilities current and noncurrent The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2029 AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2029 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Sul, 2029 MARKETABLE SECURITIES Disclosure of Marketable Securities [Text Block] The entire disclosure explains about marketable securities. DIVIDENDS Description of accounting policy for dividends [text block] Assets and liabilities classified as held for sale Assets and liabilities classified as held for sale [member] Eólica Ibirapuitã S.A. Elica Ibirapuit SA [member] This member stands for Elica Ibirapuit S.A. Schedule of Dividends Payment Schedule of Dividends Payment [Table Text Block] Schedule of Dividends Payment Additions Additions other than through business combinations, intangible assets other than goodwill Schedule of amounts recognized in the balance sheet and income statement Disclosure of retirement benefit obligations recorded in balance sheet and income statement [table text block] Disclosure of information pertaining to amounts of retirement benefit obligations recorded in balance sheet and income statement. Results from hedged debt and derivatives Income From Hedging And Derivatives Amount of Income From Hedging And Derivatives. NDF US$, March 31,2028 NDF US$, March 31,2028 [Member] NDF US$, March 31,2028 Auren Energia S.A. Auren Energia S.A [Member] .This member stands for Auren Energia S.A. NDF US$, July 30,2027 NDF US$, July 30,2027 [Member] NDF US$, July 30,2027 Constitution of reserves Increase (Decrease) Through Establishment Of Reserves, Equity The increase (decrease) in equity resulting from establishment of reserves. Provisions (net of reversal) Expenses For Other Provisions (Net Of Reversal) Amount of expenses recognized for other provisions (net of reversals) during the period. (a) Net assets Assets (Liabilities) Recognized As of Acquisition Date Assets (Liabilities) Recognized As of Acquisition Date Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Overdue 90+ days Later than three months [member] Charges for using the electricity grid Charges for using the electricity grid Charges for using the electricity grid CCEE Revenue from short term electricity The amount of revenue arising from the short-term electricity. Auditor Firm ID Auditor Firm ID Post-employment benefits Key management personnel compensation, post-employment benefits INCOME TAX AND SOCIAL CONTRIBUTION Disclosure of recoverable taxes and income tax and social contributions [Text Block] The entire disclosure for recoverable taxes and income tax and social contributions for. Types of contracts [axis] Types of contracts [axis] MARKETABLE SECURITIES Description of Accounting Policy for Marketable Securities [Policy Text Block] The description of the entity's accounting policy for marketable securities. Adjustment of interest paid Adjustment Of Interest Paid [Member] This member stands for adjustment of interest paid. 7th Debenture Issuance, November 15, 2035 7th Debenture Issuance, November 15, 2035 [Member] 7th Debenture Issuance, November 15, 2035 Value of investments made by concessionaires and permit-holders percentage Value of investments made by concessionaires and permit-holders percentage The percentage of value of investments made by concessionaires and permit-holders. Foreign‑Currency Loan, August 16, 2027 Foreign‑Currency Loan, August 16, 2027 [Member] Foreign‑Currency Loan, August 16, 2027 007/2005 Electricity Transmission Concessions, Corporate, Agreement, 24 [Member] This member stands for electricity transmission concessions, corporate, agreement, 24. Additions Additions through business combinations, other provisions Additions through business combinations, other provisions Jandaia Jandaia [Member] Jandaia Derivative Result Derivative Result [Member] Derivative Result Profit/Loss since acquisition date Profit (loss) of acquiree since acquisition date Paulista Lajeado Energia S/A Paulista Lajeado Energia s.a [Member] This member stands for Paulista Lajeado. CONTRACTUAL TRANSMISSION ASSETS CONTRACTUAL TRANSMISSION ASSETS No definition available. (-) Marketable securities Marketable Securitie Amount of marketable securities. Goiás Transmissão S.A. Goias Transmissao S.A. This member stands for Goias Transmissao S.A.. Revenue from the use of electricity Revenue from use of electricity network, related party transactions The amount of revenue received for use of electricity resulting from related party transactions. Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] PROFIT (LOSS) BEFORE TAXES Profit (loss) Before Tax, Including Discontinued Operations Profit (loss) Before Tax, Including Discontinued Operations Trade receivables Trade Receivables Recognized As Of Acquisition Date Trade Receivables Recognized As Of Acquisition Date Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] QUANTITY Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates [Abstract] No definition available. Labor Labor This member stands for a contingent liability for labor. AXIA Energia, UHE Mauá – AXIA Energia Sul, 2028 AXIA Energia, UHE Mauá – AXIA Energia Sul, 2028 [Member] AXIA Energia, UHE Mauá – AXIA Energia Sul, 2028 Fair value assessment - result Fair Value Assessment Results Financial Assets [Member] Fair Value Assessment Results Financial Assets Curemas UHE Curemas This member stands for UHE Curemas. Teles Pires UHE Teles Pires One This member stands for UHE Teles Pires, one. American Depository Shares, Class B American Depository Shares, Class B Class B ADR. Judicial settlements Opening balance Closing balance Current Judicial Settlements Current Judicial Settlements Interest received Decrease Through Interest Received, Financial Assets The decrease in financial assets resulting from receipt of interest. National Currency National Currency This member stands for Domestic currency borrowings. Authorized Shares Increase (Decrease) Through Shares Authorized, Equity The increase (decrease) in the entity's equity resulting from shares authorized. Composition of balances in foreign currency and sensitivity analysis Disclosure of financial instruments by type of interest rate [line items] Credit agreement, June 20,2029 Credit agreement, June 20,2029 [Member] Credit agreement, June 20,2029 Interest incurred Non-Cash Interest Incurred For Global Reversion Reserve Non-Cash Interest Incurred For Global Reversion Reserve 008/2014 Electricity Transmission Concessions, Corporate, Agreement, 62 [Member] Electricity Transmission Concessions, Corporate, Agreement, 62 PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment at beginning of period Property, plant and equipment at end of period Property, Plant and Equipment Property, plant and equipment including right-of-use assets FINANCIAL LIABILITIES Financial liabilities, at fair value BASA BASA This member stands for borrowings from BASA. Schedule of impairment positions, by operating segment Disclosure of impairment loss recognised or reversed for cash-generating unit [text block] Maximum Top of range [member] PROFIT OR LOSS PER SHARE Earnings per share [line items] Scenario [Axis] Scenario [Axis] Consórcio Energético Cruzeiro do Sul⁴ Cruzeiro do Sul Energy Consortium [Member] This member stands for Cruzeiro do Sul Energy Consortium Schedule of fair value, at acquisition date, of the consideration transferred in a business combination Schedule of Fair value, at Acquisition Date, of the Consideration Transferred in a Business Combination [Table Text Block] Tabular disclosure of fair value, at acquisition date, of the consideration transferred in a business combination. Others Other non-current assets RGR Returns Global Reversal Reserve Returns [Member] Global Reversal Reserve Returns Non Subsidiary Companies [Axis] Non Subsidiary Companies [Axis] Information by non-subsidiary companies. Charges on use of the electricity grid Charges On Use Of Electricity Grid Expenses The amount of expense arising from charges on use of electricity grid. Tax loss offset Tax effect of tax losses Actuarial gains or losses Actuarial gains/losses recognized in OCI in the financial year - Social security benefit plans, health plans and life insurance Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Diluted earnings per share of discontinued operation (in R$ per share) Diluted earnings (loss) per share from discontinued operations Other components of the Comprehensive Income Items that will not be reclassified to the result Other comprehensive income that will not be reclassified to profit or loss, net of tax Immediate available values Cash and cash equivalents, amount contributed to fair value of plan assets TAXES AND CONTRIBUTIONS Disclosure Of Taxes And Contributions [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. Highlights [Table] Highlights [Table] Schedule of information pertaining to current period highlights. 011/2010 Electricity Transmission Concessions, Corporate, Agreement, 26 [Member] This member stands for electricity transmission concessions, corporate, agreement, 26. Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Total assets Assets, related party transactions The amount of total assets resulting from related party transactions. Angical 2 EOL Angical 2 Represents the information pertaining to EOL Angical . Present value of partially or fully covered actuarial obligations (a) The Actuarial Present Value obligations Defined benefit obligation, at present value Additional Dividends Proposal [Axis] Additional Dividends Proposal [Axis] Additional Dividends Proposal Transfer held for sale Transfer Held For Sale The decrease in investments through acquisition of control. Eletrobras Participações S.A. – Eletropar² Eletrobras Participações S.A. – Eletropar [Member] Eletrobras Participações S.A. – Eletropar Interest incurred Reimbursement Non-Cash Effect, Interest Incurred Reimbursement Non-Cash Effect, Interest Incurred AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 2 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 2 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 2 Foreign exchange variations incurred Exchange rate variation incurred Increase (decrease) through foreign exchange, financial assets CDI (Interbank Deposit Certificate) CDI (Interbank Deposit Certificate) This member stands for Brazilian Central Bank local interbank deposit certificate rate. Calculated as a daily average of overnight interbank loans. Coxilha Negra Coxilha Negra [Member] Coxilha Negra Assets Assets Recognised As Of Acquisition Date [Abstract] No definition available. (Constitutions) Reversals of estimated losses Increase Decrease In Provision For Losses On Investments The amount increase decrease in provision for losses on investments. Other components of comprehensive income for the year, net of tax effects Other comprehensive income Classes of liabilities [axis] Classes of liabilities [axis] NDF US$, February 25,2028 NDF US$, February 25,2028 [Member] NDF US$, February 25,2028 Energy purchase Energy purchase This member stands for energy purchase. 005/2006 Electricity Transmission Concessions, Corporate, Agreement, 27 [Member] This member stands for electricity transmission concessions, corporate, agreement, 27. Counterparties [domain] Counterparties [domain] Accounts Receivable, net Non-current Non-current trade receivables Current Current. No definition available. Renegotiated Agreements Renegotiated Agreements [Member] This member stands for receivables arising from renegotiated agreements. Past due status [domain] Past due status [domain] Livramento Wind Complex – Entorno II – AXIA Energia Sul Livramento Wind Complex – Entorno II – AXIA Energia Sul [Member] Livramento Wind Complex – Entorno II – AXIA Energia Sul Nova Era Integração Transmissora S.A. Nova Era Integração Transmissora S.A. [Member] Nova Era Integração Transmissora S.A. Depreciation and amortization Depreciation and amortization Adjustments for depreciation and amortisation expense Forecast Forecast [Member] Loans, financing and debentures Loans, financing and debentures This member stands for loans, financing and debentures. Debt charges Interest expense on borrowings Title of 12(b) Security Title of 12(b) Security Jointly controlled companies Joint ventures where entity is venturer [member] Capital increase – Share incorporation Issue of equity Corrupião 3 Corrupião 3 [Member] Corrupião 3 Loans, financing and debentures Bank borrowings, undiscounted cash flows Interest payment Compulsory Loan, Interest Payment The amount of interest payment on compulsory loan. Porto Colômbia UHE Porto Colmbia This member stands for UHE Porto Colombia. TAXES AND CONTRIBUTIONS Disclosure Of Taxes And Contributions, Explanatory [Text Block] The entire disclosure for taxes and contributions. Onerous Contracts (see note 22) Operational provisions Operational Provision (Reversal) For Onerous Contracts The amount of operational provision (reversal) for onerous contracts. CCEE - Short Term Energy Current Payables For Purchase Of Short Term Energy The amount represents current payable to purchase of short term energy. Operating income (loss) before taxes Accounting profit Caiçara I Caiçara I [Member] Caiçara I Subsidiaries [domain] Subsidiaries [domain] Compensation for the Use of Water Resources Compensation for the Use of Water Resources This member stands for the financial compensation for the use of water resources for the purposes of generating electrical energy, and are a percentage that concessionaires of hydroelectric generation pay for the use of water resources. Borrowings by name [axis] Borrowings by name [axis] ACCOUNTS RECEIVABLE, NET Schedule of Accounts Receivable [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Other long-term benefits Key management personnel compensation, other long-term employee benefits (–) Fair value of plan assets (b) Plan Assets Debt Contract Plan Assets Debt Contract LOANS, FINANCING AND DEBENTURES Description of accounting policy for borrowings [text block] AMOUNT Treasury Shares [Abstract] No definition available. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT Disclosure of financial instruments [text block] Interest and charges incurred Increase Through Interest And Charges Incurred, Financial Assets The increase in financial assets resulting from interest and charges incurred. Classes of intangible assets and goodwill Classes of intangible assets and goodwill [domain] UHE Belo Monte - Norte Energia UHE Belo Monte - Norte Energia [Member] This member stands for UHE Belo Monte - Norte Energia. Use of the Electric Grid Use of the Electric Grid [Member] This member stands for use of electricity network. Loans and financing reserve – AXIA Energia Sul Loans and financing reserve – AXIA Energia Sul [Member] Loans and financing reserve – AXIA Energia Sul Asset Swap Transaction [Axis] Asset Swap Transaction [Axis] Asset Swap Transaction Other components of deferred tax expense (income) Other components of deferred tax expense (income) Monetary adjustments Monetary Adjustments The amount of monetary income (expense). Credit agreement, December 23,2025 Credit agreement, December 23,2025 [Member] Credit agreement, December 23,2025 Caititu 3 Caititu 3 [Member] Caititu 3 Contractual transmission assets Contractual Transmission Assets Non-Current The amount of non-current contractual transmission assets. Concession Rights Copyrights, patents and other industrial property rights, service and operating rights [member] FINANCIAL INSTRUMENTS AND RISK MANAGEMENT Description of accounting policy for financial instruments [text block] Gains (losses) on disposals of investments Gains (losses) on disposals of investments Disclosure of Restricted Funds [Domain] Disclosure of Restricted Funds [Domain] Different restricted funds used exclusively to comply with regulatory provisions. Construction revenue Construction revenue Revenue from construction contracts (-) Taxation on financial revenue Taxation On Financial Revenue Amount of taxation on financial revenue during the period. Deferred income tax and social contribution Deferred tax expense (income) recognised in profit or loss Bonds, February 4,2025 Bonds, February 4,2025 [Member] Bonds, February 4,2025 Annual Allowable Revenue Received [Line Items] Annual Allowable Revenue Received [Line Items] Annual Allowable Revenue Received [Line Items] Wind Power Generation Plants (WPPs) Wind Power Generation Plants (WPPs) [Member] Wind Power Generation Plants (WPPs) Schedule of revenue from external customers by segment Income from external consumers by segment disclosure [table text block] Tabular disclosure of income from external consumers by segment. AXIA Energia, UHE Santo Antônio, 2030 AXIA Energia, UHE Santo Antônio, 2030 [Member] AXIA Energia, UHE Santo Antônio, 2030 IRRF/CSRF IRRF/ CSRF This member stands for IRRF/ CSRF. Redemption price per share (in real per share) Redemption Price Per Share Redemption Price Per Share Curuá-Una UHE Curu-Una This member stands for UHE Curu-Uma. PNA Class A preferred shares This member stands for equity instruments that are senior in some aspects to ordinary shares, but subordinate to debt instruments in terms of claim, classified as Class A. Disclosure of transactions between related parties [table] Disclosure of transactions between related parties [table] Total IFRS Marketable Securities The amount of current and non-current marketable securities. Depreciation Depreciation, property, plant and equipment Power supply for end consumers Revenue from End Consumers of Generated Electricity The amount of revenue arising from end consumers of generated electricity. Disclosure of non-adjusting events after reporting period [table] Disclosure of non-adjusting events after reporting period [table] Actuarial gains/losses – risk sharing (PED) Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting From Gain (Loss) On Risk Sharing Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting From Gain (Loss) On Risk Sharing Environmental Other environment related contingent liability [member] PROPERTY, PLANT AND EQUIPMENT Disclosure of property, plant and equipment [text block] Total Capital Total capital The amount of total capital defined as total loans and financing and net equity. Components of equity [domain] Components of equity [domain] Operating Segment Disclosure of operating segments [line items] IFRS Schedule Of Equity Method Investment Equity Method Investee Name [Axis] IFRS Schedule Of Equity Method Investment Equity Method Investee Name [Axis] Information by name of investment including named security. Excludes entity that is consolidated. Effect on profit/loss - revenue (expense) Increase (decrease) in profit and loss due to reasonably possible increase (decrease) in designated risk component The increase (decrease) in profit and loss as a result of an increase (decrease) in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations. Weighted average Weighted average [member] Bonds, AXIA Energia, Maturity 02/04/2030 Bonds, AXIA Energia, Maturity 02/04/2030 [Member] Bonds, AXIA Energia, Maturity 02/04/2030 Hydroelectrict power units - AXIA Energia Nordeste Hydroelectrict power units - AXIA Energia Nordeste [Member] Hydroelectrict power units - AXIA Energia Nordeste Principal Amortization Decrease In Borrowings Through Amortization Of Principal The decrease in borrowings, resulting from amortization of principal. Expected Credit Losses (ECL) Decrease Through Expected Credit Losses, Financial Assets The decrease in financial assets resulting from expected credit losses. Energy Purchased for Resale Current payables for purchase of energy Arapapá Arapapá [Member] Arapapá Class R Preferred Shares Class R Preferred Shares [Member] Class R Preferred Shares Payments (with direct effect on cash flow) Provision used, other provisions Range [domain] Range [domain] Cash Reinforcement – AXIA Energia Norte Cash Reinforcement – AXIA Energia Norte [Member] Cash Reinforcement – AXIA Energia Norte Shareholders remuneration Shareholders remuneration This member stands for shareholder remuneration. Classes of contingent liabilities [axis] Classes of contingent liabilities [axis] Interest income Interest income Concessions or permit name [axis] Concessions or permit name [axis] The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table. (-) PIS and COFINS PIS And COFINS PIS And COFINS Acquisitions through business combinations, divestments results Acquisitions Through Business Combinations, Divestments Results Acquisitions Through Business Combinations, Divestments Results Debentures, AXIA Energia Sul, Maturity 08/31/2028 Debentures, AXIA Energia Sul, Maturity 08/31/2028 [Member] Debentures, AXIA Energia Sul, Maturity 08/31/2028 Scenario [Domain] Scenario [Domain] Compulsory loans Compulsory Loans [Member] Compulsory Loans Norte Energia S.A. - NESA Norte Energia S.A. - NESA This member stands for Norte Energia (Belo Monte). Obligations with subsidiaries Amounts payable, related party transactions Receiving principal Decrease Through Receiving Of Principal, Financial Assets The decrease in financial assets resulting from receipt of principal. Beneficiary Parties Beneficiary Parties [Member] This member is stands for beneficiary parties. Generation Generation, Excluding Administration [Member] This member stands for generation segment, excluding administration. Pension plan Pension plan This member stands for information about total pension plans. Administration Administration This member stands for administration segment. IGPM IGPM This member stands for Brazil general index of market prices. Concessions payable - use of public property Concessions payable UBP This member stands for other concessions payable U B P. Address Type [Domain] Address Type [Domain] Value of Financing Notional value Notional amount Leases Current lease liabilities Opening balance at beginning Opening balance at end Obligations for privatization of the company Obligations For Privatization Of The Company The amount of obligations for privatization of the company. Disclosure of Restricted Funds [Table] Disclosure of Restricted Funds [Table] Schedule disclosing information related to restricted funds that were raised for exclusive use to comply with regulatory provisions. Adjustment portion Annual Allowable Revenue, Adjustments Annual Allowable Revenue, Adjustments Variation of the derivative financial instrument not linked to debt protection Variation of Derivative Financial Instrument Not Linked to Debt Protection The amount of variation of the derivative financial instrument not linked to debt protection. Diluted earnings per share (in R$ per share) Profit (Loss) per share - diluted (in R$ per share) Diluted earnings (loss) per share Maturity [domain] Maturity [domain] Service provision (O&M) Service Provision (O&M) [Member] Service Provision (O&M) Belo Monte Transmissora de Energia S.A Belo Monte Transmissora de Energia SPE S.A. - BMTE The member stands for Brasnorte Transmissora de Energia S.A.. Thermal projects Thermal Projects Held For Sale [Member] This member stands for thermal projects held for sale. Categories of financial liabilities [axis] Categories of financial liabilities [axis] RAP Annual Allowable Revenue, Gross Annual Allowable Revenue, Gross INTANGIBLE ASSETS Description Of Accounting Policy For Intangible Assets [Policy Text Block] Description Of Accounting Policy For Intangible Assets Machines and equipment Machines and equipment Tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment. Associates Disclosure of associates [line items] Foreign‑Currency Loan, December 16, 2027 Foreign‑Currency Loan, December 16, 2027 [Member] Foreign‑Currency Loan, December 16, 2027 NDF US$ and Primary Aluminum, July 1,2026 NDF US$ and Primary Aluminum, July 1,2026 [Member] NDF US$ and Primary Aluminum, July 1,2026 Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code IR/CS IR/CS installments This member stands for IR/CS installments. DISCONTINUED OPERATIONS Discontinued Operations [Abstract] No definition available. 009/2023 Electricity Transmission Concessions, Corporate, Agreement, 71 [Member] Electricity Transmission Concessions, Corporate, Agreement, 71 Shareholder Renumeration [Abstract] Shareholder Renumeration Write-offs Write-Off Provisions, Other Provisions Write-Off Provisions, Other Provisions Amortizations Amortizations Financial Assests [Member] Amortizations Financial Assests Interest expense Interest expense Debenture Issuance – AXIA Energia Norte Debenture Issuance – AXIA Energia Norte 1 [Member] Debenture Issuance – AXIA Energia Norte 1 Credit agreement - US$ vs CDI, December 4,2026 Credit agreement - US$ vs CDI, December 4,2026 [Member] Credit agreement - US$ vs CDI, December 4,2026 Furnas FurnasCentraisEletricasS.a. [Member] This member stands for Furnas Centrais Eletricas S.A. (FURNAS). (-) Other Deductions (including ISS) Other Deductions Including ISS Other Deductions Including ISS Loan agreements Ifrs Payments For Legal Settlements The amount of cash paid for the settlement of litigation or for other legal issues during the period. Business combinations Disclosure of detailed information about business combination [line items] Dividends paid, ordinary shares Dividends paid, ordinary shares RESTRICTED CASH RESTRICTED CASH No definition available. Dividends paid, other shares Dividends paid, other shares 2028 Later than two years and not later than three years [member] Acquisitions through business combinations, net income Acquisitions Through Business Combinations, Net Income Acquisitions Through Business Combinations, Net Income Cash and cash equivalents [abstract] Cash and cash equivalents [abstract] Deferred taxes Deferred tax liabilities recognised as of acquisition date OBLIGATION TO DEMOBILIZE ASSETS Description of accounting policy for decommissioning, restoration and rehabilitation provisions [text block] Small Hydroelectric Power Plants (SHPs) Small Hydroelectric Power Plants (SHPs) [Member] Small Hydroelectric Power Plants (SHPs) OBLIGATIONS OF LAW No. 14,182/2021 OBLIGATIONS OF LAW No. 14,182/2021 No definition available. Other permanent additions and exclusions Other tax effects for reconciliation between accounting profit and tax expense (income) Receipt of financial charges Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities Eletronuclear Eletronuclear [Member] This member stands for Eletronuclear. FINANCIAL RESULT Financial result Finance income (cost) Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Deferred income tax and social contribution Deferred income tax and social contribution liability The amount of deferred income tax and social contribution liability. Non-adjusting events after reporting period Non-adjusting events after reporting period [Member] Non-adjusting events after reporting period Type Of Contracts, RAP [Axis] Type Of Contracts, RAP [Axis] Type Of Contracts, RAP Sensitivity analysis Disclosure of sensitivity analysis for actuarial assumptions [line items] Monetary adjustments Judicial Settlement, Monetary Adjustments Judicial Settlement, Monetary Adjustments Disclosure of reimbursement rights [table] Disclosure of reimbursement rights [table] Number of joint ventures Number Of Joint Ventures Number Of Joint Ventures Statement of changes in equity [line items] Statement of changes in equity [line items] Basic earnings per share (in R$ per share) Basic earnings per share from continuing operations ( in R$ per share) Basic earnings (loss) per share from continuing operations Tax incentives - impacts of deferral Tax Effect Of Tax Incentives The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax incentives. Accumulated losses Accumulated Losses Accumulated Losses Debentures, AXIA Energia, Maturity 04/15/2031 Debentures, AXIA Energia, Maturity 04/15/2031 [Member] Debentures, AXIA Energia, Maturity 04/15/2031 Statement of financial position [abstract] Statement of financial position [abstract] Accounts receivable, net Accounts Receivable, net [Member] This member stands for Accounts Receivable, net. Others Other Ventures [Member] This member stands for cash generating unit other ventures. Other revenue and expenditure Other income and expenditure Other operating revenues Other operating income (expense) Cover [Abstract] Cover [Abstract] Repurchase of shares Payments to acquire or redeem entity's shares Number of substations Number Of Substations Number of substations as of the reporting date. RELATED PARTY TRANSACTIONS Description of accounting policy for transactions with related parties [text block] Tax Assessment Notice – IRPJ and CSLL (AXIA Energia) Tax Assessment Notice – IRPJ and CSLL (AXIA Energia) [Member] Tax Assessment Notice – IRPJ and CSLL (AXIA Energia) Caititu 2 Caititu 2 [Member] Caititu 2 Defined benefit plans [axis] Defined benefit plans [axis] Other revenues (expenses) Other revenue, related party transactions The amount of other revenue resulting from related party transactions. Reversals Unused provision reversed, other provisions Disclosure of sensitivity analysis for actuarial assumptions [table] Disclosure of sensitivity analysis for actuarial assumptions [table] Entity Shell Company Entity Shell Company Tax Enforcement Action seeking collection of IRPJ and CSLL on amounts related to the early reversion of concession assets (AXIA Energia) Tax Enforcement Action seeking collection of IRPJ and CSLL on amounts related to the early reversion of concession assets (AXIA Energia) [Member] Tax Enforcement Action seeking collection of IRPJ and CSLL on amounts related to the early reversion of concession assets (AXIA Energia) Casa Nova I A EOL Casa Nova A [Member] This member stands for EOL Casa Nova A. Classes of liabilities [domain] Classes of liabilities [domain] Vacation charges Holiday Charges, Current Represents the holiday charges as of balance sheet date, classified as current. Company Remeasurement, Name [Axis] Company Remeasurement, Name [Axis] Company Remeasurement, Name Other funds Other funds This member stands for other funds. Transactions costs on issuance of shares Transactions costs on issuance of shares Share Issuance Costs The amount of share issuance costs at reporting period.. Dividends and interest receivable Current Dividends and Interest Receivable on Equity Investments, Net of Income Tax The amount of dividends and interest receivable on equity investments, net of income tax withheld at source, due from entities, classified as current. Debentures, AXIA Energia Norte, Maturity 06/28/2028, Two Debentures, AXIA Energia Norte, Maturity 06/28/2028, Two [Member] Debentures, AXIA Energia Norte, Maturity 06/28/2028, Two Document Fiscal Period Focus Document Fiscal Period Focus Sobradinho HPP Sobradinho This member stands for HPP Sobradinho. TOTAL ASSETS Total assets Total Assets Assets Right to compensation Reimbursement Rights, Gross The amount of reimbursement right representing the amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle obligation recognized as a separate asset. Generation Generation This member stands for generation segment. Table of disability Defined benefit plan, demographic assumption table of disability [Member] This member stands for table of disability in the demographic assumptions of defined benefit plan to calculate the defined benefit obligation. NDF US$, March 31,2027 NDF US$, March 31,2027 [Member] NDF US$, March 31,2027 Associates [domain] Associates [domain] Current income tax and social contribution Current tax expense (income) and adjustments for current tax of prior periods Marketable Securities, net Proceeds From Liquid Financial Applications, Classified As Investing Activities The cash inflow from liquid financial applications, classified as investing activities. Accounts receivable Amounts receivable, related party transactions Types of interest rates [axis] Types of interest rates [axis] Increase in revenue Increase in Revenue of Combined Entity as if Combination Occurred at Beginning of Period The increase in revenue of the combined entity as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period. Net operating revenue Revenue Revenue Estimated losses/Operating provisions (34.1) Expenses For Estimated Losses And Operating Provisions The amount of estimated losses/Operating provisions. Entity Address, City or Town Entity Address, City or Town AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 1 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 1 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2028 1 007/2014 Electricity Transmission Concessions, Corporate, Agreement, 25 [Member] This member stands for electricity transmission concessions, corporate, agreement, 25. Transmission lines (in kilometers) Electric power transmission lines The total distance of power transmission the entity operates. LOANS, FINANCING AND DEBENTURES Disclosure of borrowings [text block] Assets held for sale Non-current assets or disposal groups classified as held for sale or as held for distribution to owners CAPITAL STOCK Issued capital [member] AXIA Energia, Transnorte Energia - TNE, 2028 AXIA Energia, Transnorte Energia - TNE, 2028 [Member] AXIA Energia, Transnorte Energia - TNE, 2028 Provision for onerous contracts Non-Current Liabilities Non-current onerous contracts provision NDF US$ and Primary Aluminum, April 1,2026 NDF US$ and Primary Aluminum, April 1,2026 [Member] NDF US$ and Primary Aluminum, April 1,2026 Schedule of remuneration to key personnel Disclosure of information about key management personnel [text block] DIVIDENDS RECEIVABLES Description of Accounting Policy for Shareholder Compensation [Policy Text Block] The description of the entity's accounting policy for shareholder compensation. Entity Emerging Growth Company Entity Emerging Growth Company Bonds - US$ vs CDI, January 11,2035 Bonds - US$ vs CDI, January 11,2035 [Member] Bonds - US$ vs CDI, January 11,2035 Payments for redemption of preferred shares Payments For Redemption Of Preferred Shares Payments For Redemption Of Preferred Shares Use of the public property Use Of Public Property, Intangible Asset [Member] This member stands for use of public property, an intangible asset. Receipt of loans and financing Cash receipts from repayment of advances and loans made to other parties, classified as investing activities 2030 Long term purchase commitment year four [Member] This member stands for Long term purchase commitment year four. Caiçara II EOL Caiara II Represents the information pertaining to EOL Caiara II. SUPPLIERS Description of accounting policy for trade and other payables [text block] Non-current Trade and other non-current payables [abstract] Shareholder Remuneration [Table] Shareholder Remuneration [Table] Shareholder Remuneration [Table] Nullity of the trade union agreement Nullity of the trade union agreement This member stands for nullity of the trade union agreement lawsuit. INVESTMENTS Investments in subsidiaries, joint ventures and associates reported in separate financial statements Other financial income Financial Expense Amount of financial expenses. FMP – FGTS Eletrobras FMP – FGTS Eletrobras [Member] FMP – FGTS Eletrobras Dividends and interest on equity Increase (decrease) in investment through dividends and interest on equity The increase (decrease) in investment value on account of dividends and interest on equity. Right of Use Right-of-use assets [member] Financial leverage index (%) Net debt to capital ratio, capital management risk Percentage of net debt to capital, including debt and equity. AXIA Energia Nordeste AXIA Energia Nordeste [Member] AXIA Energia Nordeste Disposal group, including discontinued operation, expenses Disposal Group, Including Discontinued Operation, Expenses Disposal Group, Including Discontinued Operation, Expenses Payments (cash effect) Judicial Settlement, Payments Judicial Settlement, Payments Commercial Notes Commercial Notes [Member] This member stands for Commercial Notes. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Net reversals Onerous Contracts, Provisions Written Off The amount of non-current and current provision for onerous contracts written off during the period. 004/2008 Electricity Transmission Concessions, Corporate, Agreement, 55 [Member] This member stands for electricity transmission concessions, corporate, agreement, 55. Financial results, net Financial results, net No definition available. Type of taxes [domain] Type of taxes [domain] This member stands for various types of taxes levied on the revenue of the entity. Transfers Increase (decrease) through transfers, intangible assets and goodwill NDF US$, June 30,2026 NDF US$, June 30,2026 [Member] NDF US$, June 30,2026 Schedule of provisions in an amount sufficient to cover losses considered probable and for which a reliable estimate can be made Disclosure Of Provision For Contingencies [Table Text Block] Tabular disclosure of provision for contingencies. Concessions or permit name [domain] Concessions or permit name [domain] This member stands for the names of the various public service electric power concessions or permits in different states of brazil. Schedule of components of operating expenses Disclosure Of Components Of Operating Expenses, Explanatory [Table Text Block] The disclosure of detailed information about components of operating expenses. Special Class Preferred Shares Special Class Preferred Shares [Member] Special Class Preferred Shares Others Other Marketable Securities [Member] This member stands for other marketable securities. Debenture Issuance – AXIA Energia Nordeste Debenture Issuance – AXIA Energia Nordeste 4 [Member] Debenture Issuance – AXIA Energia Nordeste 4 Write-offs/Reversals Decrease Through Write-Offs Or Reversals, Intangible Assets And Goodwill The decrease in intangible assets and goodwill resulting from write-offs/reversals. Disclosure of impairment loss and reversal of impairment loss [table] Disclosure of impairment loss and reversal of impairment loss [table] CGT Eletrosul CGT Eletrosul This member stands for Companhia de Geracao Termica de Energia Eletrica (CGTEE). UHE Santo Antônio UHE Santo Antônio [Member] UHE Santo Antônio RECOVERABLE VALUE OF LONG-TERM ASSETS Disclosure of impairment loss and reversal of impairment loss [line items] Interest paid Decrease In Obligations For Privatization Of The Company, Through Charges The decrease in obligations for privatization of the company, resulting from payment of interest. BP Comercialização de energia BP Comercialização de energia [Member] BP Comercialização de energia National Treasury Note (LTN) National Treasury Note [Member] This member stands for national treasury note. REGULATORY FEES REGULATORY FEES No definition available. Reductions obtained for agreements that have already been signed Judicial Settlements, Reductions Obtained For Agreements That Have Already Been Signed Amount of reductions obtained pursuant to judicial settlements, for agreements that have already been signed. Debenture Issuance – AXIA Energia Sul Debenture Issuance – AXIA Energia Sul 3 [Member] Debenture Issuance – AXIA Energia Sul 3 AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 1 AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 1 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2031 1 Company Tariff Cycle Approval, Name [Axis] Company Tariff Cycle Approval, Name [Axis] Company Tariff Cycle Approval, Name Transfers Increase (Decrease) Through Transfers, Contract Assets The increase (decrease) in contract assets resulting from transfers. Basic earnings per share of discontinued operation ( in R$ per share) Basic earnings (loss) per share from discontinued operations AXIA Energia, Teles Pires, 2036 AXIA Energia, Teles Pires, 2036 [Member] AXIA Energia, Teles Pires, 2036 Bonds - US$ vs CDI, February 4,2030 Bonds - US$ vs CDI, February 4,2030 [Member] Bonds - US$ vs CDI, February 4,2030 Others Other non-current payables Company Remeasurement, Name [Domain] Company Remeasurement, Name [Domain] Company Remeasurement, Name [Domain] Suppliers Suppliers, related party transactions The amount of supplier obligation resulting from related party transactions. Percentage of shares in associates Proportion of ownership interest in associate Proportion of ownership interest in associate 004/2004 Electricity Transmission Concessions, Corporate, Agreement, 13 [Member] This member stands for electricity transmission concessions, corporate, agreement, 13. Casa Nova Casa Nova [Member] Casa Nova Classes of property, plant and equipment [domain] Classes of property, plant and equipment [domain] Inflation adjustment Compulsory Loan, Restatement The amount of restatement on compulsory loan. Entity Address, Country Entity Address, Country Angra I Angra I [Member] This member stands for UTN Angra I. Baguari Baguari The member stands for UHE Baguari. Estimated loss in credits Estimated Loss In Credits For Doubtful Settlement [Member] This member stands for a Estimated loss in credits for doubtful settlement. Casa Nova II EOL Casa Nova II This member stands for EOL Casa Nova II. Working Capital Strengthening – AXIA Energia Norte Working Capital Strengthening – AXIA Energia Norte 1 [Member] Working Capital Strengthening – AXIA Energia Norte 1 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] Disclosure of reconciliation of changes in intangible assets and goodwill Disclosure of reconciliation of changes in intangible assets and goodwill [line items] 034/2001 Electricity Transmission Concessions, Corporate, Agreement, 6 [Member] This member stands for electricity transmission concessions, corporate, agreement, 6. Interest Received - Marketable Securities Interest received, classified as investing activities Credit agreement - EUR vs CDI, December 23,2025 Credit agreement - EUR vs CDI, December 23,2025 [Member] Credit agreement - EUR vs CDI, December 23,2025 Constitutions (Reversions) Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss Document Annual Report Document Annual Report Equity Method Tax Effect Of Asset Equivalence The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to asset equivalence. Taxes and contributions Current assets Current receivables from taxes other than income tax Effective return on liability (asset) for the year Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense AMOUNT ATTRIBUTED TO OWNERS OF THE COMPANY Loss attributable to each class of shares - Discontinued Operation Profit (loss) from discontinued operations attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Paranaíba Transmissora de Energia S.A. Paranaiba Transmissora de Energia S.A. This member stands for Paranaiba transmissora de energia S.A. Passo São João Passo São João [Member] Passo São João (–) Defined contribution plan assets Assets Of Defined Contribution Plans Amount of assets of defined contribution plans. NET OPERATING REVENUE Disclosure of revenue [text block] Credit agreement - US$ vs CDI, December 9,2025 Credit agreement - US$ vs CDI, December 9,2025 [Member] Credit agreement - US$ vs CDI, December 9,2025 INVESTMENTS Description of Accounting Policy for Investment [Policy Text Block] The description of the entity's accounting policy for investments. Measurement of financial leveraging index Disclosure of financial risk management [text block] Intersegments Revenue from intersegment Amount of revenue from intersegments. AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 2 AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 2 [Member] AXIA Energia, Cash Reinforcement – AXIA Energia Sul, 2026 2 Xingó Xingo This member stands for Xing. Other Tax Matters [Axis] Other Tax Matters [Axis] Other Tax Matters Charges from obligations with CDE Charges From Obligations In Financial Activities Amount of charges from obligations in financial activities. LONG-TERM OPERATING COMMITMENTS Disclosure of long term operating commitments [Text Block] The disclosure of long term commitments. 014/2013 Electricity Transmission Concessions, Corporate, Agreement, 18 [Member] This member stands for electricity transmission concessions, corporate, agreement, 18. Guarantee account – compulsory loan Guarantee Account - Compulsory Loan [Member] This member stands for guarantee account - compulsory loan. Obligations of Law No. 14,182/2021 Obligations of Law and Order, Non-current Represents the obligations of law and order non-current. PROFIT (LOSS) BEFORE RESULTS OF EQUITY, INVESTMENTS, TAXES AND SOCIAL CONTRIBUTIONS Profit (Loss) before Returns on Shareholdings The amount of Profit (loss) before returns on shareholdings. Total Financial expenses Finance costs Deferral tax Tax Effect Of Deferral Tax Tax Effect Of Deferral Tax MARKETABLE SECURITIES MARKETABLE SECURITIES No definition available. Others Other Investments. [Member] Other Investments. Changes in ownership interest in subsidiaries Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity Business combination Acquisitions through business combinations, property, plant and equipment BASIS OF PREPARATION AND PRESENTATION OF FINANCIAL STATEMENTS Disclosure of material accounting policy information [text block] Decrease in defined benefit obligation Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption IFRS Equity Method Investee Name [Domain] IFRS Equity Method Investee Name [Domain] Name of investment including named security. Excludes entity that is consolidated. Changes in the PCLD for customer electricity accounts Reconciliation of changes in allowance account for credit losses of financial assets [abstract] Deferred Income tax and social contribution OCI Increase (decrease) through deferred income tax and social contribution over other comprehensive income (loss) The increase (decrease) in equity resulting from deferred income tax and social contribution over other comprehensive income (loss). Impairment Impairment [Member] This member stands for gains (losses) resulting from changes in impairment. Type of Revenue [Domain] Type of Revenue [Domain] Type of Revenue [Domain] Other components of comprehensive income Items that will be reclassified to the result Other comprehensive income that will be reclassified to profit or loss, net of tax Debentures - IPCA vs CDI, September 15,2034 Debentures - IPCA vs CDI, September 15,2034 [Member] Debentures - IPCA vs CDI, September 15,2034 Empresa de Energia São Manoel S.A. Empresa de Energia Sao Manoel S.A This member stands for Empresa de Energia So Manoel S.A. subsidiary. Bonds, AXIA Energia, Maturity 01/11/2035 Bonds, AXIA Energia, Maturity 01/11/2035 [Member] Bonds, AXIA Energia, Maturity 01/11/2035 Debentures - IPCA vs CDI, September 17,2035 Debentures - IPCA vs CDI, September 17,2035 [Member] Debentures - IPCA vs CDI, September 17,2035 Basic loss per share Basic earnings per share [abstract] Corporate Projects – AXIA Energia Nordeste Corporate Projects – AXIA Energia Nordeste [Member] Corporate Projects – AXIA Energia Nordeste Tax loss carryforwards Tax losses carried forward [Member] Tax losses carried forward LIABILITIES AND EQUITY Equity and liabilities [abstract] Credit agreement, August 11,2026 Credit agreement, August 11,2026 [Member] Credit agreement, August 11,2026 062/2001 Electricity Transmission Concessions, Corporate, Agreement, 1 [Member] This member stands for electricity transmission concessions, corporate, agreement, 1. Principal Principal This member stands for a provision for difference in principal due to monetary restatement creiteria. Disclosure Of Detailed Information About Global Reversion Reserve Disclosure Of Detailed Information About Global Reversion Reserve [Table Text Block] Disclosure Of Detailed Information About Global Reversion Reserve 2031 Long term purchase commitment year five [Member] This member stands for Long term purchase commitment year five. Results of equity method investments Interest income (expense) Actuarial assumptions determine the defined benefit obligation and expenses for the year Summary of assumptions used to calculate the defined benefit plans [abstract] No definition available. Entity Filer Category Entity Filer Category IPCA IPCA This member stands for Brazil amplified consumer prices index rate. Debentures, AXIA Energia, Maturity 09/15/2028 Debentures, AXIA Energia, Maturity 09/15/2028 [Member] Debentures, AXIA Energia, Maturity 09/15/2028 From 2 to 5 Years Later than two years and not later than five years [member] Interest on actuarial obligation Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income) Assets and liabilities classified as held for sale [table] Assets and liabilities classified as held for sale [table] Schedule disclosing information related to assets and liabilities classified as held for sale. Non‑resident Shareholders Non-resident Shareholders [Member] Non-resident Shareholders AXIA Energia, UHE Santo Antônio, 2038 AXIA Energia, UHE Santo Antônio, 2038 [Member] AXIA Energia, UHE Santo Antônio, 2038 OPERATING PROFIT BEFORE FINANCIAL RESULT Net operating revenue Profit before financial result Profit (loss) from operating activities 004/2013 Electricity Transmission Concessions, Corporate, Agreement, 16 [Member] This member stands for electricity transmission concessions, corporate, agreement, 16. Credit agreement, December 16,2027 Credit agreement, December 16,2027 [Member] Credit agreement, December 16,2027 Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Financial compensation for transfer of minority interest Financial Compensation For Transfer Of Minority Interest Financial Compensation For Transfer Of Minority Interest NDF US$, September 30,2027 NDF US$, September 30,2027 [Member] NDF US$, September 30,2027 Other Other adjustments to reconcile profit (loss) Auction No. 004/2025 – Lot 7B¹ Electricity Transmission Concessions, Corporate, Agreement, 67 [Member] Electricity Transmission Concessions, Corporate, Agreement, 67 058/2001 Electricity Transmission Concessions, Corporate, Agreement, 3 [Member] This member stands for electricity transmission concessions, corporate, agreement, 3. Decrease through classified as held for sale, investments Decrease Through Classified As Held For Sale, Investments Decrease Through Classified As Held For Sale, Investments 005/2012 Electricity Transmission Concessions, Corporate, Agreement, 20 [Member] This member stands for electricity transmission concessions, corporate, agreement, 20. Sinop UHE Sinop The member stands for UHE Sinop. Estimated contribution Estimate of contributions expected to be paid to plan for next annual reporting period Disclosure of financial assets [table] Disclosure of financial assets [table] Class "A" preferred shares Class "A" preferred shares This member stands for Preferred Shares Class A. Obligations of Law No. 14,182/2021 Obligations of Law No. 14,182/2021 This member stands for obligations of law. Transmissora Delmiro Gouveia – TDG Transmissora Delmiro Gouveia – TDG 1 [Member] Transmissora Delmiro Gouveia – TDG 1 Pension fund – reserve allocation Investment funds, amount contributed to fair value of plan assets Accumulated other comprehensive income Accumulated other comprehensive income (–) Administrative funds Administrative funds, amount contributed to fair value of plan assets The amount that administrative funds constitute of the fair value of defined benefit plan assets. Authorized percentage to repurchase shares, maximum Authorized Percentage To Repurchase Shares, Maximum Authorized Percentage To Repurchase Shares, Maximum LONG-TERM OPERATING COMMITMENTS Description of Accounting Policy for Long Term Operating Commitment [Policy Text Block] The description of the entity's accounting policy for long-term operating commitment. Electric power transmission lines, Percentage Electric Power Transmission Lines, Percentage Percentage of electric power transmission lines. 9th Debenture Issuance, November 15, 2032 9th Debenture Issuance, November 15, 2032 [Member] 9th Debenture Issuance, November 15, 2032 Papagaio EOL Papagaio Represents the information pertaining to EOL Papagaio. Concessions payable - use of public property Non-current concessions payable The amount of concessions payable for the use of public property classified as non-current liability. Baguari Energia S.A. Baguari Energia S.A. [Member] Represents the information pertaining to Baguari Energia S.A. STATUTORY - INVESTMENTS STATUTORY - INVESTMENTS This member stands for a component of equity representing the statutory reserves investments. CURRENT Current liabilities [abstract] Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 2 [Member] Cash Reinforcement – AXIA Energia Sul 2 Characteristics of defined benefit plans [domain] Characteristics of defined benefit plans [domain] Goods, Materials and Services Non-current trade payables 010/2005 Electricity Transmission Concessions, Corporate, Agreement, 8 [Member] This member stands for electricity transmission concessions, corporate, agreement, 8. 028/2009 Electricity Transmission Concessions, Corporate, Agreement, 37 [Member] This member stands for electricity transmission concessions, corporate, agreement, 37. Mascarenhas de Moraes UHE Mascarenhas de Moraes (Peixoto) The member stands for UHE Mascarenhas de Moraes. Rouar S.A. Rouar S.A. This member stands for Rouar S.A. RECOVERABLE TAXES AND INCOME TAX AND SOCIAL CONTRIBUTIONS RELATED PARTY TRANSACTIONS Disclosure of transactions between related parties [line items] Credit agreement - US$ vs CDI, August 11,2026 Credit agreement - US$ vs CDI, August 11,2026 [Member] Credit agreement - US$ vs CDI, August 11,2026 Type of Revenue [Axis] Type of Revenue [Axis] Type of Revenue Classes of share capital [domain] Classes of share capital [domain] Operational provisions Provisions For Non-Operating Losses [Member] This member stands for a Provisions for non-operating losses. Non-current financial liabilities Noncurrent Financial Liabilities Excluding Trade And Other Payables And Provisions The amount of non-current financial liabilities excluding trade and other payables and provisions. Contact Personnel Email Address Contact Personnel Email Address NDF US$, August 31,2027 NDF US$, August 31,2027 [Member] NDF US$, August 31,2027 Regulatory remeasurements - Transmission contracts Regulatory remeasurements - Transmission contracts Regulatory Remeasurements - Transmission Contracts The amount of change due to regulatory remeasurements - transmission contracts. AXIA Energia, Transnorte Energia - TNE, 2041 AXIA Energia, Transnorte Energia - TNE, 2041 [Member] AXIA Energia, Transnorte Energia - TNE, 2041 Constitution/reversal of tax credits Tax Effect Of Reversal Of Tax Credits The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to reversal of tax credits. Classes of financial liabilities [axis] Classes of financial liabilities [axis] Classes of financial liabilities [domain] Classes of financial liabilities [domain] Interest rate Borrowings, adjustment to interest rate basis Acquisition of Debentures Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities MARKETABLE SECURITIES Investment In Marketable Securities [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Regulatory fees Current Current regulatory liability The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period. Acquisition of subsidiary, net of cash acquired Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities Bonds, AXIA Energia, Maturity 02/04/2025 Bonds, AXIA Energia, Maturity 02/04/2025 [Member] Realizable assets Realizable funds, amount contributed to fair value of plan assets The amount that realizable funds constitute of the fair value of defined benefit plan assets. Reclassification of earnings from sale of financial instruments at fair value through OCI Increase (Decrease) from Reclassification of Earnings from Sale of Financial Instruments At Fair Value Through Other Comprehensive Income (Loss) The increase (decrease) in equity resulting from reclassification of earnings from sale of financial instruments at fair value through ORA. SUDAM/SUDENE Tax Benefit SUDAM/SUDENE Tax Benefit [Member] SUDAM/SUDENE Tax Benefit NDF US$, May 31,2027 NDF US$, May 31,2027 [Member] NDF US$, May 31,2027 Plan assets Plan assets [member] 004/2024 Electricity Transmission Concessions, Corporate, Agreement, 69 [Member] Electricity Transmission Concessions, Corporate, Agreement, 69 Post-employment benefit adjustments Increase (decrease) through post-employment benefit adjustments, equity The increase (decrease) in equity resulting from the post-employment benefit adjustments. Investments in equity instruments designated at fair value through other comprehensive income [domain] Investments in equity instruments designated at fair value through other comprehensive income [domain] Debentures, September 15,2034 Debentures, September 15,2034 [Member] Debentures, September 15,2034 AIC Reimbursement of Fixed Assets in Progress - AIC [Member] Reimbursement of Fixed Assets in Progress - AIC Reimbursement rights collection flow Reimbursement Rights, Collection Reimbursement Rights, Collection Funil UHE Funil - RJ This member stands for UHE Funil. Net profit from continuing operations Net profit from continuing operations Profit (loss) from continuing operations CUSTOMERS Description of accounting policy for trade and other receivables [text block] Third series Third series [Member] Third series Profit for the Year Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share Fundo de Energia do Nordeste Northeast Energy Fund This member is stands for Northeast Energy Fund. Capital stock Share capital Issued capital OPERATING PROVISIONS (REVERSALS) OPERATING PROVISIONS (REVERSALS) No definition available. Others Other contingent liabilities [member] Others Other intangible assets [member] 005/2008 Electricity Transmission Concessions, Corporate, Agreement, 58 [Member] This member stands for electricity transmission concessions, corporate, agreement, 58. Commercial Note, September 1, 2030 Commercial Note, September 1, 2030 [Member] Commercial Note, September 1, 2030 Categories of financial assets [axis] Categories of financial assets [axis] RS Energia – AXIA Energia Sul RS Energia – AXIA Energia Sul 2 [Member] RS Energia – AXIA Energia Sul 2 Energy purchased for resale Energy purchased for resale expense Energy purchased for resale expense FINANCIAL RESULT Description of accounting policy for fee and commission income and expense [text block] Disclosure of Restricted Funds [Axis] Disclosure of Restricted Funds [Axis] The information by restricted funds used exclusively to comply with regulatory provisions. Short Term Electric Power - CCEE Short Term Energy [Member] This member stands for CCEE short term energy. Financial liabilities Financial liabilities Others Other property, plant and equipment [member] Restricted Investment Investment pledged value as guarantee The portion of the investment value locked as guarantee to judicial proceedings.. Total (debit)/credit of IRPJ and CSLL Income tax expense Tax expense (income) Rio Paranapanema Energia Rio Paranapanema Energia [Member] Rio Paranapanema Energia Declaration of Nullity Declaration of Nullity This member stands for legal proceeding provision related to partial Nullification of the addendum (K Factor analytical correction of prices) regarding the construction agreement for the Xingo Hydroelectric Plant. Document Transition Report Document Transition Report Interest Paid Decrease In Borrowings Through Payment Of Interest The decrease in borrowings, resulting from payment of interest. RGR RETURNS PROVISIONS FOR LITIGATION AND CONTINGENT LIABILITIES Disclosure of other provisions, contingent liabilities and contingent assets [text block] Debenture Issuance – AXIA Energia Nordeste Debenture Issuance – AXIA Energia Nordeste 2 [Member] Debenture Issuance – AXIA Energia Nordeste 2 Financial instruments at fair value Financial Instruments At Fair Value [Member] Financial Instruments At Fair Value BENEFITS TO EMPLOYEES Disclosure of defined benefit plans [line items] (–) Contingent liabilities Contingent liabilities, amount contributed to fair value of plan assets The amount that contingent liabilities constitute of the fair value of defined benefit plan assets. Hydroelectrict power units - AXIA Energia Norte Hydroelectrict power units - AXIA Energia Norte [Member] Hydroelectrict power units - AXIA Energia Norte Eletronet S.A. Eletronet S.A. [Member] Eletronet S.A. Capital Stock Disclosure of classes of share capital [line items] Proposed additional dividend Increase (Decrease) Through Proposed Additional Dividends Increase (Decrease) Through Proposed Additional Dividends Maturity [axis] Maturity [axis] Balance to be distributed for the year Profit (Loss) Attributable To Owners Of Parent After Adjustments And Appropriations The profit (loss) from continuing and discontinued operations attributable to owners of the parent after adjustments and appropriations. Adjustment factor Adjustment Factor [Member] Adjustment Factor Galpões Parque Elico Galpes Represents the information pertaining to Parque Parque Elico Galpes. Civil Civil. This member stands for a provision for civil legal proceedings. Percentage of shares issued Percentage of shares issued The percentage of shares issued by the entity. Foreign‑Currency Loan, August 11, 2026 Foreign‑Currency Loan, August 11, 2026 [Member] Foreign‑Currency Loan, August 11, 2026 Energy purchased for resale Expenses Of Purchased Energy Sold The amount of expense arising from energy sold. Contingent earn out asset Contingent Earn Out Asset Contingent Earn Out Asset Associates [axis] Associates [axis] Total Reportable segments [member] Document Type Document Type Annulment Action related to IRPJ and CSLL (AXIA Energia Sul) Annulment Action related to IRPJ and CSLL (AXIA Energia Sul) [Member] Annulment Action related to IRPJ and CSLL (AXIA Energia Sul) Serra do Facão UHE Serra do Faco This member stands for UHE Serra do Faco. Mata de Santa Genebra Transmissão S.A. Mata de Santa Genebra Transmisso S.A It represents information pertaining to its Mata de Santa Genebra Transmisso S.A. Value of notes issued Notes and debentures issued Social security defined benefit plans Social security defined benefit plans This member stands for social security benefit plans. Profit or loss [abstract] Profit or loss [abstract] Enerpeixe S.A. Enerpeixe S.A. This member stands for Enerpeixe S.A.. Earnings per share [table] Earnings per share [table] Service concession arrangements [axis] Service concession arrangements [axis] Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 4 [Member] Cash Reinforcement – AXIA Energia Sul 4 Regulators liabilities [domain] Regulators liabilities [domain] This member stands for all regulatory liabilities. Marketable securities Current Marketable Securities The amount of current marketable securities. Transmission revenues Adjustment for Contractual Revenue Transmission Adjustment for contractual revenue transmission to reconcile profit (loss) to net cash flow from (used in) operating activities. Equity attributable to owners of the Company Equity attributable to owners of parent NDF US$, January 29,2027 NDF US$, January 29,2027 [Member] NDF US$, January 29,2027 Ordinary Shares and Class C Preferred Shares Ordinary Shares and Class C Preferred Shares [Member] Ordinary Shares and Class C Preferred Shares Regulated Prescription Regulated Prescription [Member] Regulated Prescription Debentures, AXIA Energia, Maturity 04/15/2029 Debentures, AXIA Energia, Maturity 04/15/2029 [Member] Debentures, AXIA Energia, Maturity 04/15/2029 Components of equity [axis] Components of equity [axis] FINANCING AND LOANS Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] Other Comprehensive ifrs Other Comprehensive Income [Member] This member stand for other comprehensive income. 018/2012 Electricity Transmission Concessions, Corporate, Agreement, 32 [Member] This member stands for electricity transmission concessions, corporate, agreement, 32. CONTRACTUAL TRANSMISSION ASSETS Contractual Transmission Assets, Disclosure, Explanatory [Text Block] The entire disclosure for contractual transmission assets of the company. Income tax Income tax [Member] Income tax Schedule of subsidiaries guarantees Disclosure of Guarantees Explanatory Of Subsidiaries[Table Text Block] Tabular disclosure of guarantees. (+) Acquisition of investee control Increase through origination or Acquisition, financial assets Increase through origination or Acquisition, financial assets Itaguaçu da Bahia Energias Renováveis S.A. Itaguau da Bahia Energias Renovveis S.A. [Member] This member stands for Itaguau da Bahia Energias Renovveis S.A. Debenture Issuance – AXIA Energia Sul Debenture Issuance – AXIA Energia Sul 1 [Member] Debenture Issuance – AXIA Energia Sul 1 Energisa Holding Energisa Holding This member stands for Energisa S.A.. Equatorial Maranhão Distribuidora de Energia S.A. Equatorial Maranho Distribuidora de Energia S.A. The member stands for equatorial maranhao distribuidora de energia S.A. Ordinary Action to challenge IRPJ and CSLL on indemnification for early reversion of concession assets (AXIA Energia Sul) Ordinary Action to challenge IRPJ and CSLL on indemnification for early reversion of concession assets (AXIA Energia Sul) [Member] Ordinary Action to challenge IRPJ and CSLL on indemnification for early reversion of concession assets (AXIA Energia Sul) Categories of related parties [domain] Categories of related parties [domain] Research and Development - R&D and Energy Efficiency - EE Research and Development - R&D and Energy Efficiency - PEE This member stands for fee to fund research and development resources that are intended for the studies and research on planning and expansion of the energy system, as well as on inventory and feasibility required to take advantage of hydroelectric potential. Others Other current assets Other assets Other Assets Recognized as of Acquisition Date The amount recognized as of the acquisition date for other assets acquired in a business combination. Donations and contributions Donations and subsidies expense AXIA Energia, Livramento Wind Complex – Entorno II – AXIA Energia Sul, 2029 AXIA Energia, Livramento Wind Complex – Entorno II – AXIA Energia Sul, 2029 [Member] AXIA Energia, Livramento Wind Complex – Entorno II – AXIA Energia Sul, 2029 Renegotiation of hydrological risk Renegotiation of Hydrological Risk This member stands for Renegotiation of Hydrological Risk. RAP Cycle Annual Permitted Transmission Revenues The amount of annual permitted transmitted revenues of the company. Debenture Issuance – AXIA Energia Norte Debenture Issuance – AXIA Energia Norte 4 [Member] Debenture Issuance – AXIA Energia Norte 4 Auditor Location Auditor Location Assumed interest rate Assumed interest rate in sensitivity analysis Assumed interest rate in sensitivity analysis. Restricted shares Treasury Shares, Restricted Shares An entity's own equity instruments, held by the entity or other members of the consolidated group, that are restricted. Secondary series Secondary series This member stands for secondary series of 5th issue of simple debentures by Eletrobras. Presumed‑Profit Regime Presumed‑Profit Regime [Member] Presumed‑Profit Regime Weighted average number of shares (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share Homologating Resolution No. 3,344/24 Homologating Resolution No. 3,344/24 [Member] Homologating Resolution No. 3,344/24 017/2011 Electricity Transmission Concessions, Corporate, Agreement, 34 [Member] This member stands for electricity transmission concessions, corporate, agreement, 34. Schedule of current and non-current energy supplies Schedule of Financing And Loans Receivables [Table Text Block] The disclosure for financing and loans receivables. Shares based remuneration Key management personnel compensation, share-based payment IRRF IRRF [Member] IRRF Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Defined benefit plans [domain] Defined benefit plans [domain] Guarantees of controlled companies Guarantees of controlled companies This member stands for Guarantees of subsidiary companies. Decrease/Increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents after effect of exchange rate changes Mata de Santa Genebra Transmissão S.A. Mata de Santa Geneva Transmissao S.A [Member] The member stands for Mata de Santa Geneva Transmisso S.A. FINANCIAL RESULT. FINANCIAL RESULT. No definition available. Manso UHE Manso The member stands for UHE Manso. Debentures, AXIA Energia Norte, Maturity 09/15/2031 Debentures, AXIA Energia Norte, Maturity 09/15/2031 [Member] Debentures, AXIA Energia Norte, Maturity 09/15/2031 Past service cost Increase (decrease) in net defined benefit liability (asset) resulting from past service cost Interest rate appreciation risk Interest rate appreciation risk This member stands for the type of risk that the fair value or future cash flows of a financial instrument will fluctuate because of increase in market interest rates. Net interest costs Defined Benefit Plans Interest Expense Amount of interest expense recognized related to defined benefit plan. Casa Nova B EOL Casa Nova B [Member] This member stands for EOL Casa Nova A. CSLL CSLL [Member] CSLL 014/2010 Electricity Transmission Concessions, Corporate, Agreement, 53 [Member] This member stands for electricity transmission concessions, corporate, agreement, 53. Debenture Issuance – AXIA Energia Norte Debenture Issuance – AXIA Energia Norte 3 [Member] Debenture Issuance – AXIA Energia Norte 3 Class A and Class B Preferred shares Class A and Class B Preferred shares This member stands for Class A and Class B Preferred Shares. Social security plan benefits Social Security Plans Social security plan benefits This member stand for Social security plan benefits. Entity Current Reporting Status Entity Current Reporting Status From 1 to 2 Years Later than one year and not later than three years [member] Schedule of deferred taxes Disclosure of deferred taxes [text block] (+) Constitution Increase through origination or purchase, financial assets Consolidated Entities [Domain] Consolidated Entities [Domain] Schedule Of Compulsory Loans [Table] Schedule Of Compulsory Loans [Table] N/A Remuneration interest Remuneration interest This member stands for remuneration interest. Debentures, AXIA Energia Sul, Maturity 11/15/2028 Debentures, AXIA Energia Sul, Maturity 11/15/2028 [Member] Debentures, AXIA Energia Sul, Maturity 11/15/2028 Regulators liabilities [axis] Regulators liabilities [axis] The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table. Net cash used in investing activities of continuing operations Cash flows from (used in) investing activities, continuing operations Marketable securities Marketable Securities [Member] Marketable Securities Disclosure of classes of share capital [abstract] Disclosure of classes of share capital [abstract] AXIA Energia Transmissora Nova Ponte S.A. AXIA Energia Transmissora Nova Ponte S.A. [Member] AXIA Energia Transmissora Nova Ponte S.A. Development banks Domestic Currency, Investment Banks Borrowings [Member] This member stands for borrowings with BASA FNO, BNDES, BNB and FINEP in domestic currency. Fair value assessment - result Fair Value Assessment Results Financial Liabilities [Member] Fair Value Assessment Results Financial Liabilities Reimbursement Classification [Axis] Reimbursement Classification [Axis] Reimbursement Classification Current Fiscal Year End Date Current Fiscal Year End Date Effects of deconsolidation Decrease through loss of control of subsidiary, intangible assets and goodwill Financial instruments at fair value through OCI Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability Shares (%) Percentage of shares in jointly controlled entities Proportion of ownership interest in joint venture Monetary variations incurred Increase Through Monetary Variations Incurred, Financial Assets Increase Through Monetary Variations Incurred, Financial Assets The increase in financial assets resulting from monetary variations incurred. The adoption of new standards and current interpretations and New standards and Non-current interpretations Ifrs New Accounting Pronouncements, Policy [Policy Text Block] Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. Peixe Angical UHE Peixe Angical This member stands for UHE Peixe Angical. Schedule of movement of loans receivable Global Reversal Reserve Liabilities and Receivables [Table Text Block] Tabular disclosure of Global Reversal Reserve) RGR receivables and corresponding liabilities. Financial liabilities at amortised cost, category [member] Financial liabilities at amortised cost, category [member] Due Accounts Due [Member] This member stands for accounts due. LOANS, FINANCING AND DEBENTURES Disclosure of detailed information about borrowings [line items] Reconciliation of expense with income tax and social contribution Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Compulsory Loan Compulsory Loan This member stands for compulsory loan judicial proceedings. Financial assets Opening balance as of January 1 Final balance on December, 31 Opening balance Final balance Financial assets AXIA Energia, Caldas Novas Transmissão, 2038 AXIA Energia, Caldas Novas Transmissão, 2038 [Member] AXIA Energia, Caldas Novas Transmissão, 2038 ISS ISS This member stands for tax applied to services provided to a third party by a company or professional and is paid by the service provider. Shareholder Remuneration [Line Items] Shareholder Remuneration [Line Items] Shareholder Remuneration [Line Items] Schedule of new and revised standards and interpretations already issued and not yet adopted Disclosure of detailed information about new and revised standards and interpretations already issued and not yet adopted [Table Text Block] The disclosure of detailed information about new and revised standards and interpretations already issued and not yet adopted. Others Other assets, amount contributed to fair value of plan assets Itaipu Agreement Itaipu Agreement This member stands for the fund exclusively used for the technical and financial cooperation agreement was signed between Furnas and Itaipu Binacional, whose object is the revitalization of Furnas' direct current system dedicated to the Itaipu Hydroelectric Plant. Contractual Transmission assets Contract Transmission Asset [Member] This member stands for contra asset. PROVISIONS FOR LITIGATION AND CONTINGENT LIABILITIES PROVISIONS FOR LITIGATION AND CONTINGENT LIABILITIES No definition available SELIC (Special Settlement and Custody System) SELIC (Special Settlement and Custody System) This member stands for SELIC. Quantity (in shares) Number of shares issued Schedule of possible losses Disclosure of contingent liabilities [text block] Bonus share issuance (in shares) Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates, Additional Shares Issuance Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates, Additional Shares Issuance Real estate investments Real estate, amount contributed to fair value of plan assets Empresa de Pesquisa Energética (EPE) Empresa de Pesquisa Energética (EPE) [Member] Empresa de Pesquisa Energética (EPE) Income from services rendered Income From Services Rendered, Related Party Transactions Income from services rendered related party transactions. Temporary difference, unused tax losses and unused tax credits [domain] Temporary difference, unused tax losses and unused tax credits [domain] AXIA Energia Transmissora Carnaúba S.A. AXIA Energia Transmissora Carnaúba S.A. [Member] AXIA Energia Transmissora Carnaúba S.A. Schedule of liabilities related to the Compulsory Loan Disclosure Of Compulsory Loan [Table Text Block] The tabular disclosure for compulsory loan. RETAINED EARNINGS Retained earnings [member] Schedule of profit distribution Disclosure of Profit Distribution, Explanatory [Table Text Block] The disclosure of detailed information about profit distribution. Financial instruments at fair value by means of OCI Increase (decrease) through conversion of convertible instruments, equity Debentures, AXIA Energia Nordeste, Maturity 04/15/2029 Debentures, AXIA Energia Nordeste, Maturity 04/15/2029 [Member] Debentures, AXIA Energia Nordeste, Maturity 04/15/2029 2027 Later than one year and not later than two years [member] Mandatory Dividends Dividends recognised as distributions to owners of parent São Domingos UHE So Domingos This member stands for UHE So Domingos. Summary of estimated obligations Summary of Estimated Obligations [Table Text Block] The tabular disclosure of estimated obligations. Depreciation and amortization Depreciation and amortisation expense Discount rate (as a percent) Discount rate used in current estimate of value in use Benefits paid during the fiscal year Benefits paid in the year Decrease (increase) in net defined benefit liability (asset) resulting from payments from plan Schedule of movement of provisions for impairment Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block] Total assets AssetsRecognisedAsOfAcquisitionDate The amount recognised as of the acquisition date for aggregate assets acquired in a business combination. Social security contribution Contributions payable, related party transactions The amount of contributions payable to employees benefit plans in related party transactions. 021/2010 Electricity Transmission Concessions, Corporate, Agreement, 50 [Member] This member stands for electricity transmission concessions, corporate, agreement, 50. Categories of financial assets [domain] Categories of financial assets [domain] Result Comprehensive income [abstract] Santo Antônio Santo Antnio Energia S.A. Represents the information pertaining to Santo Antnio Energia S.A. SHAREHOLDER REMUNERATION Disclosure of dividends [text block] Derivative financial instruments Current derivative financial assets Public service electric power concessions [table] Public service electric power concessions [table] Schedule disclosing information related to public service electric power concessions. Eletronorte Eletronorte This member stands for Centrais Eletricas do Norte do Brasil S.A. (Eletronorte). Goiás Transmissão S.A. Gois Transmisso [Member] The member stands for Goias transmissao. Estreito Estreito This member stands for Estreito. Schedule of investments recognized at fair value Schedule of investments recognized at fair value [Table Text Block] Tabular disclosure of investments recognized at fair value. Taxes and contributions Non-current liability Non-current payables on social security and taxes other than income tax Renegotiated Credits Renegotiated Credits [Member] This member stands for Renegotiated credits. Transactions with shareholders: Changes in equity [abstract] Operating Revenue [Line Items] Operating Revenue [Line Items] Operating Revenue [Line Items] Beginning Balance Closing Balance Net defined benefit liability (asset) Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Indirect ownership (as a percent) Proportion of indirect ownership interest in subsidiary The proportion of indirect ownership interest in a subsidiary attributable to the entity. American Depositary Shares American Depositary Shares American Depositary Shares Member Net liabilities (a) + (b) Net liability / (asset) Surplus (deficit) in plan Simplício - Anta Simplício - Anta [Member] Simplício - Anta ASSETS AND LIABILITIES HELD FOR SALE Assets and liabilities classified as held for sale [line items] Assets and liabilities classified as held for sale [line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with assets and liabilities classified as held for sale table. Energia dos Ventos VIII S.A. Energia dos Ventos VIII S.A. [Member] This member stands for Energia dos Ventos VIII S.A. 013/2010 Electricity Transmission Concessions, Corporate, Agreement, 39 [Member] This member stands for electricity transmission concessions, corporate, agreement, 39. CAPITAL RESERVES, GRANTED EQUITY INSTRUMENTS AND TREASURY SHARES Capital reserve [member] Contact Personnel Name Contact Personnel Name Treasury shares – Share repurchase Purchase of treasury shares Control of acquired, percentage Percentage of voting equity interests acquired Provision for onerous contracts Current Liabilities Current onerous contracts provision Infrastructure construction Infrastructure Construction [Member] Infrastructure Construction Non-cash effect: Non-cash effect: Non-cash Effect [Abstract] No definition available. Number Of series for issuance of debentures Number Of Series For Issuance Of Debentures Number of series of debentures issued by the entity. AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 1 AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 1 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Nordeste, 2029 1 Labor Labor. This member stands for a provision for labor legal proceedings. Disclosure of investments in associates and joint ventures [Line items] Disclosure of investments in associates and joint ventures [Line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. (a) = (b) + (c) Fair Value of Business Combination Recognized As Of Acquisition Date Fair Value of Business Combination Recognized As Of Acquisition Date Additional bonus percentage Additional Bonus Percentage Additional Bonus Percentage Items that will be reclassified subsequently to result Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] Derivative financial instruments Derivatives [member] AXIA Energia, UHE Passo de São João – AXIA Energia Sul, 2026 AXIA Energia, UHE Passo de São João – AXIA Energia Sul, 2026 [Member] AXIA Energia, UHE Passo de São João – AXIA Energia Sul, 2026 (c) Fair value of the previously held equity interest Acquisition-date fair value of equity interest in acquiree held by acquirer immediately before acquisition date Disposal group price received per share (in real per share) Disposal Group Price Received Per Share Disposal Group Price Received Per Share Tax Enforcement and Objections to Tax Enforcement related to IRPJ and CSLL (AXIA Energia) Tax Enforcement and Objections to Tax Enforcement related to IRPJ and CSLL (AXIA Energia) [Member] Tax Enforcement and Objections to Tax Enforcement related to IRPJ and CSLL (AXIA Energia) Energia dos Ventos VII S.A. Energia dos Ventos VII S.A. [Member] This member stands for Energia dos Ventos ViI S.A. Current financial liabilities Current Financial Liabilities Excluding Trade And Other Payables And Provisions The amount of current financial liabilities excluding trade and other payables and provisions. After Dispatch No. 1,228/25 After Dispatch No. 1,228/25 [Member] After Dispatch No. 1,228/25 002/2011 Electricity Transmission Concessions, Corporate, Agreement, 44 [Member] This member stands for electricity transmission concessions, corporate, agreement, 44. Empresa de Energia São Manoel Empresa de Energia Sao Manoel [Member] This member stands for Empresa de Energia So Manoel. Classes of share capital [axis] Classes of share capital [axis] AXIA Energia Sul AXIA Energia Sul [Member] AXIA Energia Sul Credit agreement - US$ vs CDI, August 29,2025 Credit agreement - US$ vs CDI, August 29,2025 [Member] Credit agreement - US$ vs CDI, August 29,2025 Angra III Angra III [Member] The member stands for UTN Angra III. ONEROUS CONTRACTS Description Of Accounting Policy For Onerous Contract Provision [Policy Text Block] Description Of Accounting Policy For Onerous Contract Provision Principal Current portion of non-current borrowings TOTAL SHAREHOLDERS EQUITY Beginning balance Ending balance (+) Total shareholders’ equity Equity Beginning balance of onerous contracts provision Ending balance of onerous contracts provision Total onerous contracts provision Onerous contracts provision River Basin Revitalization Obligations For Privatization Of The Company, River Basin Revitalization [Member] This member stands for obligations for privatization of the company pertaining to River Basin Revitalization. Balance at beginning of the year Balance at end of the year Accumulated Impairment Loss The accumulated amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. ONEROUS CONTRACTS Disclosure of provisions for onerous contracts [Text Block] The entire disclosure of provision for onerous contracts. PIS And COFINS Civil Dispute PIS And COFINS Civil Dispute [Member] PIS And COFINS Civil Dispute Electricity Transmission Concessions, Corporate, Agreement Electricity Transmission Concessions, Corporate, Agreement [Member] Electricity Transmission Concessions, Corporate, Agreement REIMBURSEMENT RIGHTS AND OBLIGATIONS Description of Accounting Policy for Reservation Rights and Obligations [Policy Text Block] The description of the entity's accounting policy for Reservation Rights and Obligations. Eletronuclears Eletronuclears This member stands for Electrobras termonuclear S.A. RS Energia – AXIA Energia Sul RS Energia – AXIA Energia Sul 1 [Member] RS Energia – AXIA Energia Sul 1 RGR returns Current Current Global Reversal Reserve Returns Current Global Reversal Reserve Returns Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 1 [Member] Cash Reinforcement – AXIA Energia Sul 1 Disclosure of significant investments in associates and joint ventures [table] Disclosure of significant investments in associates and joint ventures [table] Schedule disclosing information related to associates and joint ventures. Credit agreement, January 8,2025 Credit agreement, January 8,2025 [Member] Credit agreement, January 8,2025 Types of contracts [domain] Types of contracts [domain] ACCOUNTING ESTIMATES AND JUDGMENTS ACCOUNTING ESTIMATES AND JUDGMENTS No definition available. Luiz Gonzaga UHE Luiz Gonzaga (Itaparica) This member stands for UHE Luiz Gonzaga (Itaparica). (-) Sectoral charges Sector Charges Sector Charges Dividends / interest on equity (IOE) Tax Effect of Revenue from Dividend The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to revenues from dividend. Level 2 of fair value hierarchy Level 2 of fair value hierarchy [member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 2 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 2 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 2 Disclosure of non-adjusting events after reporting period [abstract] Disclosure of non-adjusting events after reporting period [abstract] Mauá Hydroelectric Plant Mauá Hydroelectric Plant [Member] Mauá Hydroelectric Plant Balance for the destination of the year Profit (loss), attributable to owners of parent Increase (decrease) in profit Increase (Decrease) in Profit (Loss) of Combined Entity as if Combination Occurred at Beginning of Period The increase in profit (loss) of the combined entity as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period. Ibirapuitã Ibirapuitã [Member] Ibirapuitã Increases / (decreases) in operating liabilities Adjustments for increase (decrease) in liabilities Adjustments for increase (decrease) in liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. MGE Transmissão S.A. MGE Transmissão S.A [Member] MGE Transmissão S.A Inflation Adjustment Restatement, Other Provisions The amount of increase due to restatement for other provisions. FINANCIAL RESULT Financial Result, Disclosure, Explanatory [Text Block] The entire disclosure for financial result. Judicial deposits Increase (decrease) through transfers and other changes, other provisions Major customers [axis] Major customers [axis] Debentures, AXIA Energia Sul, Maturity 09/15/2029 Debentures, AXIA Energia Sul, Maturity 09/15/2029 [Member] Debentures, AXIA Energia Sul, Maturity 09/15/2029 Debentures, AXIA Energia, Maturity 07/15/2025 Debentures, AXIA Energia, Maturity 07/15/2025 [Member] Debentures, AXIA Energia, Maturity 07/15/2025 Additional proposed dividends Additional Proposed Dividends Recognised As Distributions To Owners Of Parent The amount of additional proposed dividends recognised as distributions to owners of the parent. Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 6 [Member] Cash Reinforcement – AXIA Energia Sul 6 ADR ADR [Member] Receipt of allowed annual revenue – RAP Permitted Annual Revenue and Indemnities Received The cash inflow from RAP and indemnities received, classified as operating activities. Eletrobras fourth issue of simple debentures Eletrobras, Fourth Issue Of Simple Debentures [Member] This member stands for 4th issue of simple debentures by Eletrobras. Deferred tax assets Deferred tax assets Deferred tax assets NON-CONTROLLING INTERESTS Non-controlling interests [member] Non‑controlling portion Comprehensive income, attributable to non-controlling interests Participation in OCI of subsidiaries and associates Increase (Decrease) Through Participations in Other Comprehensive Income Loss of Subsidiaries And Associates, Equity Increase (Decrease) Through Participations in Other Comprehensive Income Loss of Subsidiaries And Associates, Equity Document Accounting Standard Document Accounting Standard Number of SPEs in which the company holds direct and indirect interest Number Of Special Purpose Entities In Which Company Holds Direct And Indirect Interest The number of Special Purpose Entities (SPEs) in which the company holds direct and indirect interest. Average depreciation rate per year (%) Depreciation rate, property, plant and equipment Schedule of changes in the provision Disclosure Of Current And Non-current Energy Supplies [Table Text Block] The tabular disclosure of energy supplies with current and non-current portion. Energia dos Ventos V S.A. Energia dos Ventos V S.A. [Member] This member stands for Energia dos Ventos V S.A. Marketable Securities Non-current Noncurrent Marketable Securities The amount of noncurrent marketable securities. Current Current Obligations For Privatization Of The Company The amount of current obligations for privatization of the company. Credit agreement - EUR vs CDI, August 16,2027 Credit agreement - EUR vs CDI, August 16,2027 [Member] Credit agreement - EUR vs CDI, August 16,2027 Debentures, AXIA Energia Nordeste, Maturity 09/15/2031 Debentures, AXIA Energia Nordeste, Maturity 09/15/2031 [Member] Debentures, AXIA Energia Nordeste, Maturity 09/15/2031 Disclosure of detailed information about business combination Disclosure of detailed information about business combination [text block] Smoothed percentage Defined benefit plan, actuarial assumption, smoothing percentage The percentage of smoothing in actuarial valuation of assumption in defined benefit plan. Loans and financing Debt instruments, amount contributed to fair value of plan assets (-) Reversal Decrease through derecognition, financial assets Actuarial gains/losses arising from changes in financial assumptions Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions AMOUNTS RECEIVABLE - ENBpar FINANCIAL INSTRUMENTS AND RISK MANAGEMENT Disclosure of detailed information about financial instruments [line items] Reductions obtained Judicial Settlements, Reduction Obtained Amount of reductions obtained pursuant to judicial settlements. Teles Pires Teles Pires [Member] Teles Pires Interligação Elétrica Garanhuns S.A. - IE Garanhuns Interligacao Eletrica Garanhuns S.A. - IE Garanhuns [Member] The member stands for Interligacao Eletrica Garanhuns S.A.. Additional moratorium on electricity Additional Moratorium on Electricity The amount of additional moratorium on electricity. Legal Entity [Axis] Legal Entity [Axis] Wages growth Wages growth This member stands for the expected rates of wages increases used as actuarial assumptions. [Refer: Actuarial assumptions [member]] Asset Derivative financial assets 021/2009 Electricity Transmission Concessions, Corporate, Agreement, 10 [Member] This member stands for electricity transmission concessions, corporate, agreement, 10. Profit for the Year Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Debentures, AXIA Energia Norte, Maturity 07/15/2035 Debentures, AXIA Energia Norte, Maturity 07/15/2035 [Member] Debentures, AXIA Energia Norte, Maturity 07/15/2035 Actuarial assumption of discount rates [member] Actuarial assumption of discount rates [member] Debentures, AXIA Energia Norte, Maturity 09/15/2035 Debentures, AXIA Energia Norte, Maturity 09/15/2035 [Member] Debentures, AXIA Energia Norte, Maturity 09/15/2035 Net Operating Revenue [Abstract] Net Operating Revenue [Abstract] TAXES PAYABLE Income tax disclosure [line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Actuarial losses arising from changes in demographic assumptions. Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions AMOUNT ATTRIBUTED TO NON-CONTROLLING INTERESTS Profit (loss) from discontinued operations attributable to non-controlling interests Companhia Energética Sinop S.A. - SINOP Companhia Energética Sinop S.A. - SINOP [Member] Companhia Energética Sinop S.A. - SINOP RESULTS OF EQUITY METHOD INVESTMENTS Share of profit (loss) of associates and joint ventures accounted for using equity method and income from other investments The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method and income from other investments. Brasil Ventos Energia S.A. Brasil Ventos Energia S.A. This member stands for Brasil Ventos Energia S.A. 2. Leases Non-current lease liabilities COMPULSORY LOAN Description of Accounting Policy for Compulsory Loan [Policy Text Block] The description of the entity's accounting policy for compulsory loan. Impact Resulting from Implementations in the Benefits Plan Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan Madeira Energia S.A. Madeira Energia S.A. [Member] This member stands for Madeira Energia S.A. (MESA). Loans, Financing And Bonds Receivable Loans, Financing And Bonds Receivable, Category [Member] This member stands for loans, financing and bonds receivable by the company. Company Remeasurement [Line Items] Company Remeasurement [Line Items] Company Remeasurement [Line Items] Company Remeasurement [Table] Company Remeasurement [Table] Company Remeasurement [Table] Disclosure of Annual Allowable Revenue Received Disclosure Of Annual Allowable Revenue Received [Table Text Block] Disclosure Of Annual Allowable Revenue Received INTANGIBLE ASSETS Intangible assets Intangible assets other than goodwill Amounts recognized in balance sheet and statement of income for the year Reconciliations of plan liabilities [abstract] No definition available Furnas - Maturity 23/08/2027 Commercial Notes, Furnas, Maturity August 23, 2027, Two [Member] This member stands for commercial notes of Furnas, maturing on August 23, 2027, two. Transmissora Delmiro Gouveia – TDG Transmissora Delmiro Gouveia – TDG 2 [Member] Transmissora Delmiro Gouveia – TDG 2 NDF US$, November 30,2026 NDF US$, November 30,2026 [Member] NDF US$, November 30,2026 Segments [domain] Segments [domain] Non-current Customer Non-Current [Member] This member stands for non-current trade receivables. Cash and cash equivalents Cash and cash equivalents at the beginning of the fiscal year Cash and cash equivalents at the end of the year Total cash, cash equivalents (-) Cash and cash equivalents Cash and cash equivalents Tax Assessment Notice – PIS/COFINS (AXIA Energia) Tax Assessment Notice – PIS/COFINS (AXIA Energia) [Member] Tax Assessment Notice – PIS/COFINS (AXIA Energia) Document Information [Table] Document Information [Table] (Increases) / decreases in operating assets Increases (Decreases) in Operating Assets [Abstract] No definition available. SUBSEQUENT EVENTS Disclosure of non-adjusting events after reporting period [line items] Furnas - Maturity 23/08/2025 Commercial Notes, Furnas, Maturity August 23, 2025 [Member] This member stands for commercial notes of Furnas, maturing on August 23, 2025. Opening balance Ending balance Dividend payables Schedule of movement in the most relevant investments Schedule of change in investments in subsidiaries and associated companies [Table Text Block] Tabular disclosure of change in investments in subsidiaries and associated companies. Schedule of composition of loans, financing and debentures Disclosure of detailed information about borrowings [text block] Debentures, AXIA Energia Norte, Maturity 07/15/2032, Two Debentures, AXIA Energia Norte, Maturity 07/15/2032, Two [Member] Debentures, AXIA Energia Norte, Maturity 07/15/2032, Two 010/2009 Electricity Transmission Concessions, Corporate, Agreement, 9 [Member] This member stands for electricity transmission concessions, corporate, agreement, 9. Business combinations [axis] Business combinations [axis] Eletrobras - Commercial Paper, Maturity October 2023 Commercial Notes, Eletrobras, Maturity October 13, 2023 [Member] This member stands for commercial notes of Eletrobras, maturing on October 13, 2023. Tax Tax contingent liability [member] Number Of series for issuance of notes Number Of Series For Issuance Of Notes Number of series of notes issued by the entity. AXIA Energia, RS Energia – AXIA Energia Sul, 2027 1 AXIA Energia, RS Energia – AXIA Energia Sul, 2027 1 [Member] AXIA Energia, RS Energia – AXIA Energia Sul, 2027 1 Fuel for electricity production Fuel expense Corporate Transmission Projects – AXIA Energia Nordeste Corporate Transmission Projects – AXIA Energia Nordeste 2 [Member] Corporate Transmission Projects – AXIA Energia Nordeste 2 Statutory reserve for investments (as a percent) Statutory Reserve For Investments Percent The statutory reserve percent for investments. Disclosure of attribution of expenses by nature to their function [table] Disclosure of attribution of expenses by nature to their function [table] Average annual inflation rate (%) Actuarial assumption of expected rates of inflation 2029 Long term purchase commitment year three [Member] This member stands for Long term purchase commitment year three. 012/2009 Electricity Transmission Concessions, Corporate, Agreement, 5 [Member] This member stands for electricity transmission concessions, corporate, agreement, 5. Jandaia I EOL Jandaia I Represents the information pertaining to EOL Jandaia I. Long term purchase of capital commitment [Line Items] Long term purchase of capital commitment [Line Items] Line items represent of long term purchase commitment. Interest rate risk Interest rate risk [member] ECL - Consumers and resellers (see note 9) ECL - Consumers and resellers ECL - Consumers and resellers 2025 HIGHLIGHTS Current Year Operation Highlights [Text Block] The entire disclosure of the highlights of the current year operation. 019/2012 Electricity Transmission Concessions, Corporate, Agreement, 14 [Member] This member stands for electricity transmission concessions, corporate, agreement, 14. Payment of judicial contingencies Payment for legal provisions The cash outflow for payments of legal provisions. Fair value assessment - OCI Fair value assessment - OCI [Member] Fair value assessment - OCI Percentage of equity interest sold Percentage Of Equity Interest Sold The percentage of equity interest sold. STATEMENTS OF INCOME Statement of Income [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Schedule of cash and cash equivalents Cash and Cash Equivalents [Table Text Block] The tabular disclosure of cash and cash equivalents. Cash Reinforcement – AXIA Energia Sul Cash Reinforcement – AXIA Energia Sul 5 [Member] Cash Reinforcement – AXIA Energia Sul 5 After 2030 Over 5 Years Later than five years [member] Sistema de Transmissão Nordeste S.A. - STN Sistema de Transmisso Nordeste S.A. - STN [Member] Represents the information pertaining to Sistema de Transmisso Nordeste S.A. - STN Classes of financial assets [domain] Classes of financial assets [domain] Constitution of Statutory Reserves and Profit Retention Constitution of Statutory Reserves and Profit Retention The amount of constitution of a statutory reserve and profit retention. Transmission Transmission This member stands for transmission segment. % of shares in relation to the total Weighted average shares percentage The percentage of weighted shares outstanding for the specified class with respect to total number of weighted shares outstanding. CDE Quota CDE contribution This member stands for the Energy Development Account (CDE) which intended to promote the development of energy in the states, projects to universalize electrical energy services, the program to subsidize low-income consumers, and expansion of the natural gas grid to serve states that do not yet have pipelines. CDE is managed by the entity in accordance with the related law. Current Customers Current [Member] This member stands for current trade receivables. Loans, financing and debentures Loans and financing This member stands for loans and financing. Disclosure of reconciliation of changes in intangible assets and goodwill [table] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Disclosure Of RAP Cycle Disclosure Of RAP Cycle [Table Text Block] Disclosure Of RAP Cycle Effective tax rate (%) of transactions Tax Incentive Percentage The percentage of tax incentive applicable to company. ACCOUNTING ESTIMATES AND JUDGMENTS Disclosure of accounting judgements and estimates [text block] Trade and other payables Trade and other payables Linha Verde Transmissora – AXIA Energia Norte Linha Verde Transmissora – AXIA Energia Norte [Member] Linha Verde Transmissora – AXIA Energia Norte Auditor Name Auditor Name Segment consolidation items [domain] Segment consolidation items [domain] Transmission infrastructure – contractual asset Purchase of Contractual Assets Classified as Investing Activities The cash outflow for the purchases of contractual asset, classified as investing activities. Capital reduction/ increase and others Increase (decrease) in capital investment The amount of capital investments or write off made during the period. Payment to dissenting shareholders – merge of shares Payment To Dissident Shareholders, Classified As Financing Activities The cash outflow for payment to dissident shareholders, classified as financing activities. Number of legal actions filed Number of litigations filed Number of lawsuits filed against the entity. Furnas UHE Furnas This member stands for UHE Furnas. Results from acquisitions and divestments -Adjustments For Losses (Gains) On Acquisition And Disposal Of Non-current Assets -Adjustments For Losses (Gains) On Acquisition And Disposal Of Non-current Assets Amazonas, First Issue Of Debentures Amazonas, First Issue Of Debentures [Member] This member stands for 1st issue of debentures by Amazonas. ACCOUNTS RECEIVABLE, NET Disclosure of trade and other receivables [text block] Other Receivables Other Receivables [Member] Other Receivables Reimbursement Classification [Domain] Reimbursement Classification [Domain] Reimbursement Classification [Domain] Amortizations Amortizations Financial Liabilities [Member] Amortizations Financial Liabilities UHE Colíder - AXIA Energia UHE Colíder - AXIA Energia [Member] UHE Colíder - AXIA Energia 017/2009 Electricity Transmission Concessions, Corporate, Agreement, 19 [Member] This member stands for electricity transmission concessions, corporate, agreement, 19. Monetary adjustments - CDE Monetary Adjustments - CDE Account The amount of monetary income (expense) from CDE Account. Debentures, AXIA Energia, Maturity 11/15/2029 Debentures, AXIA Energia, Maturity 11/15/2029 [Member] Debentures, AXIA Energia, Maturity 11/15/2029 (=) Gain on bargain purchase Gain (Loss) On Acquisition-Date Fair Value Gain (Loss) On Acquisition-Date Fair Value LOANS, FINANCING AND DEBENTURES Disclosure of Financing And Loans Receivables [Text Block] The entire disclosure for financing and loans receivables. Net cash provided by operating activities Cash flows from (used in) operating activities INVESTMENTS Disclosure of interests in other entities [text block] ECL - Financing and loans (see note 13) ECL - Financing and loans ECL - Financing and loans Entity [Domain] Entity [Domain] Income Statement Amounts Recognized In Income Statement [Abstract] No definition available. 8th Debenture Issuance, September 15, 2035 8th Debenture Issuance, September 15, 2035 [Member] 8th Debenture Issuance, September 15, 2035 Furnas - Maturity 23/08/2027 Commercial Notes, Furnas, Maturity August 23, 2027, One [Member] This member stands for commercial notes of Furnas, maturing on August 23, 2027, one. Document Fiscal Year Focus Document Fiscal Year Focus ICMS ICMS [Member] ICMS Adjustments to reconcile profit (Loss) to cash generated by operations: Adjustments to reconcile profit (loss) [abstract] Electricity Service Inspection Fee Electricity Service Inspection Fee Represents information pertaining to electricity service inspection fee. Other investments Investments other than investments accounted for using equity method Number of shares in entity held by entity or by its subsidiaries or associates (in shares) Number of shares in entity held by entity or by its subsidiaries or associates NDF US$ and Primary Aluminum, November 1,2025 NDF US$ and Primary Aluminum, November 1,2025 [Member] NDF US$ and Primary Aluminum, November 1,2025 Energy Development Account Energy Development Account Obligations For Privatization Of The Company, Energy Development Contribution [Member] This member stands for obligations for privatization of the company pertaining to Energy Development Contribution. Debentures, AXIA Energia Nordeste, Maturity 06/15/2031 Debentures, AXIA Energia Nordeste, Maturity 06/15/2031 [Member] Debentures, AXIA Energia Nordeste, Maturity 06/15/2031 Bonds, January 11,2035 Bonds, January 11,2035 [Member] Bonds, January 11,2035 AXIA Energia, Angra III, 2038 AXIA Energia, Angra III, 2038 [Member] AXIA Energia, Angra III, 2038 Schedule of electric energy transmission concession Disclosure of electric power transmission contracts of other parties [Table Text Block] The disclosure of electric power transmission contracts of other parties. Vale do São Bartolomeu Transmissora de Energia S.A. Vale do São Bartolomeu Transmissora de Energia S.A [Member] Vale do São Bartolomeu Transmissora de Energia S.A Types of interest rates [domain] Types of interest rates [domain] Credit agreement - US$ vs CDI, December 16,2027 Credit agreement - US$ vs CDI, December 16,2027 [Member] Credit agreement - US$ vs CDI, December 16,2027 Changes in ownership interest in subsidiaries Net Change In Ownership Interest In Subsidiaries Net Change In Ownership Interest In Subsidiaries Credit agreement, December 4,2026 Credit agreement, December 4,2026 [Member] Credit agreement, December 4,2026 Social security contribution Social contribution, Current Represents the social contribution as of balance sheet date, classified as current. Marimbondo UHE Marimbondo This member stands for UHE Marimbondo. Commercial Notes, AXIA Energia, Maturity 8/23/2026 Commercial Notes, AXIA Energia, Maturity 8/23/2026 [Member] Commercial Notes, AXIA Energia, Maturity 8/23/2026 Goods, Materials and Services Current trade payables Cerro Chato I EOL Cerro Chato I This member stands for EOL CERRO CHATO I. Total Key management personnel compensation Deferred tax expense (income) relating to origination and reversal of temporary differences, unrecognized Deferred Tax Expense (Income) Relating To Origination And Reversal Of Temporary Differences, Unrecognized Deferred Tax Expense (Income) Relating To Origination And Reversal Of Temporary Differences, Unrecognized Percentage of equity interest guaranteed Percentage of Guaranteed Outstanding Balance Of Investees Accrued The percentage accrued of guaranteed outstanding balance of controlled and non-controlled investees. Belo Monte Belo Monte [Member] Belo Monte Service concession arrangements [domain] Service concession arrangements [domain] Actuarial expense / (revenue) recognized in the year Actuarial expense / (revenue) recognized in the year Actuarial Expense (Revenue) The amount of actuarial expense (income) recorded during fiscal year. Characteristics of defined benefit plans [axis] Characteristics of defined benefit plans [axis] 057/2001 Electricity Transmission Concessions, Corporate, Agreement, 4 [Member] This member stands for electricity transmission concessions, corporate, agreement, 4. Losses on disposals of investments Losses on disposals of investments Others Adjustments for decrease (increase) in other assets Accounts Receivable, net Current Current trade receivables Acquisition of Control of Subsidiaries / Merger Acquisitions through business combinations, other provisions Schedule of Interest income and expense per segment Interest income and interest expense by segment disclosure [table text block] "Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities by segment wise. " Liabilities Liabilities Recognised As Of Acquisition Date [Abstract] No definition available. Others Other Equity Method Investments [Member] This member stands for other equity method investments. INTANGIBLE ASSETS Description of accounting policy for intangible assets and goodwill [text block] RESTRICTED CASH Disclosure of Restricted Funds [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Local Phone Number Local Phone Number Regulatory Regulatory This member stands for a provision for regulatory. Interest paid Decrease In Global Reversion Reserve, Interest Payments Decrease In Global Reversion Reserve, Interest Payments Disclosure of detailed information about property, plant and equipment [abstract] Disclosure of detailed information about property, plant and equipment [abstract] Limitation of dividends Increase (Decrease) Through Limitation Of Dividends, Equity The increase (Decrease) in equity resulting from limitation of dividends. Operating Charges (Reversals), Net Operating charges (reversals), net. The net amount of operating charges (reversals). Commercial Notes, AXIA Energia, Maturity 8/23/2027 Commercial Notes, AXIA Energia, Maturity 8/23/2027 [Member] Commercial Notes, AXIA Energia, Maturity 8/23/2027 UHE Mauá – AXIA Energia Sul UHE Mauá – AXIA Energia Sul [Member] UHE Mauá – AXIA Energia Sul Securities and restricted deposits Payment For Securities And Restricted Deposits, Classified As Operating Activities The cash outflow for securities and restricted deposits, classified as operating activities. AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2031 AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2031 [Member] AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2031 Debentures, AXIA Energia, Maturity 09/15/2034 Debentures, AXIA Energia, Maturity 09/15/2034 [Member] Debentures, AXIA Energia, Maturity 09/15/2034 Acquisition of subsidiary Increase Through Acquisition Of Subsidiary, Financial Assets Increase Through Acquisition Of Subsidiary, Financial Assets Intangible asset – Concession right Identifiable intangible assets recognised as of acquisition date SUBSEQUENT EVENTS Disclosure of non-adjusting events after reporting period [text block] Shareholders compensation Shareholders Compensation [Member] This member stands for shareholder compensation. Corporate Transmission Projects – AXIA Energia Nordeste Corporate Transmission Projects – AXIA Energia Nordeste 1 [Member] Corporate Transmission Projects – AXIA Energia Nordeste 1 Other assets Other assets, related party transactions The amount of other assets resulting from related party transactions. Debenture Issuance – AXIA Energia Sul Debenture Issuance – AXIA Energia Sul [Member] Debenture Issuance – AXIA Energia Sul Cash transferred Cash transferred Capital Market Borrowings Capital Market Borrowings [Member] This member stands for bonuses, debentures and commercial paper borrowings. Supplementary social security Pension payments classified as operating activities The cash outflow for pension payments classified as operating activities. Entity Voluntary Filers Entity Voluntary Filers Result of equity method investments Adjustments for undistributed profits of investments accounted for using equity method Converted Preferred B Converted Preferred B This member stands for Converted Preferred Shares Class B. Effects of additions and deletions Adjustments to tax expense income [Abstract] No Definition available Percentage of equity interest /Percentage of participation Proportion of ownership interest in subsidiary Proportion of ownership interest in subsidiary Coxilha Negra III Coxilha Negra III [Member] Coxilha Negra III Percentage used for determining the present value of obligations Obligations For Privatization Of The Company, Discount Rate The percentage of discount rate used for determining the present value of obligations for privatization of the company. Expenditure Operating Expenses [Abstract]. No definition available. Samuel HPP Samuel This member stands for HPP Samue . Entity Registrant Name Entity Registrant Name Basics earnings per share (in R$ per share) Net basic earnings per share (in R$ per share) Basic earnings (loss) per share AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2032 AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2032 [Member] AXIA Energia, Transmissora Delmiro Gouveia – TDG, 2032 Refunds to the RGR Fund Refund To The Reserva Global De Reversao Fund The amount of restitution to Reserva Global de Reversao fund. Measurement [axis] Measurement [axis] 022/2009 Electricity Transmission Concessions, Corporate, Agreement, 15 [Member] This member stands for electricity transmission concessions, corporate, agreement, 15. ONEROUS CONTRACTS Onerous contracts provision [Line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associate with domain members defined in one or many axes of the table. CONTRACTUAL TRANSMISSION ASSETS Description of Accounting Policy for Contractual Transmission Assets [Policy Text Block] The description of the entity's accounting policy for contractual transmission assets. Gross receivables Loans And Receivables And Interest Charges, Gross The gross amount of aggregate loans and receivables and aggregate charges for interest. Network use charges Network Use Charges Related Party Transactions The amount of network charges paid for use of network resulting from related party transactions. Transenergia São Paulo S.A. Transenergia So Paulo S.A. [Member] Represents the information pertaining to Transenergia So Paulo S.A. Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations Loans and receivables Loans and receivables, category [member] Disclosure of associates [table] Disclosure of associates [table] Estimate loss or value involved in the legal proceeding Estimated financial effect of contingent liabilities OBLIGATIONS OF LAW No. 14,182/2021 Disclosure For Obligation For Privatization Of The Company [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. 004/2012 Electricity Transmission Concessions, Corporate, Agreement, 11 [Member] This member stands for electricity transmission concessions, corporate, agreement, 11. Equity attributable to non-controlling interests Non-controlling interests Construction Construction Expenses The amount of expense arising from the construction. Segment consolidation items [axis] Segment consolidation items [axis] POST-EMPLOYMENT BENEFIT Disclosure of employee benefits [text block] Disclosure of reimbursement rights [line items] Disclosure of reimbursement rights [line items] Disclosure of analysis of other comprehensive income by item [table] Disclosure of analysis of other comprehensive income by item [table] Schedule of movement of intangible assets Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Financing and loans receivable Financing and loans receivable This member stands for financing and loans receivable. All Currencies [Domain] All Currencies [Domain] River Basin Revitalization Charges River Basin Revitalization Charges from financial activities Amount of river basin revitalization charges from financial activities. Number of debentures issued Number Of Debentures Issued Number of debentures issued. Charges Current interest receivable Disclosure of operating segments [abstract] Disclosure of operating segments [abstract] Variable Income Investments Variable income investments, amount contributed to fair value of plan assets The amount that variable income investments constitute of the fair value of defined benefit plan assets. Transenergia Renovável S.A. Transenergia Renovavle S.A. This member stands for Transenergia Renovavel S.A. (Transenergia). Balbina UHE Balbina The member stands for UHE Balbina. Contributions made by employer Employer contributions Companhia Estadual de Distribuição de Energia Elétrica – CEEED Companhia Estadual de Distribuio de Energia Eltrica - CEEE-D Represents the information pertaining toCompanhia Estadual de Distribuio de Energia Eltrica - CEEE-D Disclosure of transactions between related parties [abstract] Disclosure of transactions between related parties [abstract] Payroll Payroll, Current Represents the payroll as of balance sheet date, classified as current. Repurchase of shares (in shares) Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates, Repurchase Of Shares The number of shares in the entity held by the entity or by its subsidiaries or associates, from repurchase of shares. Profit reserves Profit reserves A component of equity representing the profit reserves. Foreign‑Currency Loan, December 4, 2027 Foreign‑Currency Loan, December 4, 2027 [Member] Foreign‑Currency Loan, December 4, 2027 Operating Revenue, Net Operating Revenue, Gross Operating Revenue, Gross Bonds Bonds. [Member] Bonds. NDF US$, November 30,2027 NDF US$, November 30,2027 [Member] NDF US$, November 30,2027 Schedule of marketable securities Marketable Securities [Table Text Block] The tabular disclosure of marketable securities. FINANCING AND LOANS Disclosure of financing and loans receivable [line items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Insufficient collection or declaration for PIS/COFINS Insufficient collection or declaration for PIS/COFINS This member stands for lawsuit related to insufficient collection or declaration for PIS/COFINS. NDF US$ and Primary Aluminum, March 1,2026 NDF US$ and Primary Aluminum, March 1,2026 [Member] NDF US$ and Primary Aluminum, March 1,2026 Third parties revenue from third party Amount of revenue from third party. Buildings, civil works and improvements Buildings, civil works and improvements Represents the information pertaining to Buildings, Civil Works and Improvements. Fair value adjustment Increase (Decrease) Fair Value Adjustment, Financial Assets Schedule of fair value of liquid assets acquired Schedule of Fair Value of Liquid Assets Acquired [Table Text Block] Tabular disclosure of fair value of liquid assets acquired. Litigation amount claimed Litigation, damages sought, value The value (monetary amount) of the award that the entity seeks in a legal proceeding. Amortization Reimbursement Effects On Cash Flow, Amortization Reimbursement Effects On Cash Flow, Amortization Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table] Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table] Type Of Contracts, RAP [Domain] Type Of Contracts, RAP [Domain] Type Of Contracts, RAP [Domain] Construction revenue Increase Through Addition Of Construction Revenue, Contract Assets The increase in contract assets resulting from addition of construction revenue. CDI CDI This member stands for CDI interest rate, a daily average of overnight interbank loans, is used as an investment benchmark in the Brazilian financial system. SPA (SACE), December 4,2034 SPA (SACE), December 4,2034 [Member] SPA (SACE), December 4,2034 Long-Term Commitment Derivatives Long-Term Commitment Derivatives [Member] Long-Term Commitment Derivatives Portion attributed to controlling shareholders Comprehensive income, attributable to owners of parent NDF US$, February 26,2027 NDF US$, February 26,2027 [Member] NDF US$, February 26,2027 Total Liabilities Liabilities Gain on disposals Gains on disposals of investments Furnas first issue of commercial paper Commercial Notes, Furnas, First Issue Of Commercial Paper [Member] This member stands for 1st issue of commercial paper by Furnas. Write-offs Compulsory Loan, Write Offs The amount of decrease in compulsory loan obligations, through write-offs. Commercial Notes, AXIA Energia, Maturity 8/23/2025 Commercial Notes, AXIA Energia, Maturity 8/23/2025 [Member] Commercial Notes, AXIA Energia, Maturity 8/23/2025 Type Of Contracts, RAP [Line Items] Type Of Contracts, RAP [Line Items] Type Of Contracts, RAP [Line Items] 014/2008 Electricity Transmission Concessions, Corporate, Agreement, 48 [Member] This member stands for electricity transmission concessions, corporate, agreement, 48. Defined Pension Benefits Disclosure of net defined benefit liability (asset) [line items] Hydroelectrict power units - AXIA Energia Hydroelectrict power units - AXIA Energia [Member] Hydroelectrict power units - AXIA Energia Trade payables Trade and other payables recognised as of acquisition date Issuance of Class “C” preferred shares | PNC Proceeds from issue of preference shares Taesa Taesa [Member] Taesa Commercial Notes, AXIA Energia, Maturity 8/23/2027, Two Commercial Notes, AXIA Energia, Maturity 8/23/2027, Two [Member] Commercial Notes, AXIA Energia, Maturity 8/23/2027, Two Schedule of Accounts Receivable [Table] Schedule of Accounts Receivable [Table] Schedule disclosing information related to accounts receivable. Operating expenses Total expenditure Operating expenses Operating expense excluding cost of sales Debentures, AXIA Energia Nordeste, Maturity 09/15/2034 Debentures, AXIA Energia Nordeste, Maturity 09/15/2034 [Member] Debentures, AXIA Energia Nordeste, Maturity 09/15/2034 Colíder Colíder [Member] Colíder DIVIDENDS AND INTEREST RECEIVABLE DIVIDENDS AND INTEREST RECEIVABLE No definition available Companhia Energética de Brasília - CEB Companhia Energtica de Braslia - CEB This member stands for Companhia Energtica de Braslia - CEB . RECOVERABLE AMOUNT OF LONG-TERM ASSETS Disclosure of impairment of assets [text block] III - Electricity transmission concessions - SPEs Electricity Transmission Concessions III - SPEs [Member] The member stands for III - Electricity transmission concessions - SPEs. RGR resources RGR resources This member stands for Reserva Global de Reverso, a fund we administer, funded by consumers and providing compensation to all concessionaires for non-renewal or expropriation of their concessions used as source of funds for the expansion and improvement of the electrical energy sector. Amortization Decrease Through Right To Consideration Becoming Unconditional, Amortization The decrease in contract assets resulting from the right to consideration becoming unconditional. Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Restricted cash Restricted Cash [Member] Restricted Cash Allocation of the residual result for the year Allocation of Residual Result [Abstract] No definition available. Schedule Of Compulsory Loans [Line Items] Schedule Of Compulsory Loans [Line Items] Schedule Of Compulsory Loans [Line Items] Debentures, AXIA Energia Sul, Maturity 09/15/2028 Debentures, AXIA Energia Sul, Maturity 09/15/2028 [Member] Debentures, AXIA Energia Sul, Maturity 09/15/2028 2029 Later than three years and not later than four years [member] (-) ECL Expected credit losses (ECL) [Member] Expected credit losses (ECL) Value of investment Investment value of pledged as guarantee The amount of investments pledged as guarantee in judicial proceedings. Opening balance Final balance Compulsory loan. The aggregate amount of liability for compulsory loan. Compulsory loans are tax collected from consumers to generate resources to expand electric sector. Coaracy Nunes UHE Coaracy Nunes This member stands for UHE Coaracy Nunes. Loans and financing reserve – AXIA Energia Nordeste Loans and financing reserve – AXIA Energia Nordeste [Member] Loans and financing reserve – AXIA Energia Nordeste Assets and liabilities classified as held for sale [axis] Assets and liabilities classified as held for sale [axis] NDF US$, July 31,2026 NDF US$, July 31,2026 [Member] NDF US$, July 31,2026 Schedule of Regulatory fees Disclosure of Detailed Information about Sector Specific Charges [Table Text Block] Tabular disclosure of Sector specific charges. Schedule of provision for estimated credit loss Disclosure Of Provision For Estimated Credit Loss [Table Text Block] The tabular disclosure of provision for estimated credit loss. Joint ventures [axis] Joint ventures [axis] Extended term of borrowings Borrowings, Extended Term Extended term of the company's borrowings. Energia dos Ventos IX S.A. Energia dos Ventos IX S.A. [Member] This member stands for Energia dos Ventos IX S.A. AXIA Energia, RS Energia – AXIA Energia Sul, 2027 2 AXIA Energia, RS Energia – AXIA Energia Sul, 2027 2 [Member] AXIA Energia, RS Energia – AXIA Energia Sul, 2027 2 Borrowings by name [domain] Borrowings by name [domain] Account Receivable Trade receivables [member] OPERATIONAL CONTEXT OPERATIONAL CONTEXT No definition available Functional and presentation currency of the financial statements Description of accounting policy for functional currency [text block] NDF US$ and Primary Aluminum, May 1,2026 NDF US$ and Primary Aluminum, May 1,2026 [Member] NDF US$ and Primary Aluminum, May 1,2026 Other Activities Other Activities Segment [Member] Other Activities Segment Unrecognized / reversed deferred taxes Tax Effect Of Unrecognized / Reversed Deferred Taxes Tax Effect Of Unrecognized / Reversed Deferred Taxes Deferred tax liabilities Deferred tax liabilities Exchange rate changes Increase (decrease) through Exchange Rate Changes Increase (decrease) through Exchange Rate Changes Carcará EOL Carcar Represents the information pertaining to EOL Carcar. Payment of income tax and social contribution Income taxes paid (refund), classified as operating activities Other transactions Increase (Decrease) In Other Transactions Increase (Decrease) In Other Transactions Tax Assessment Notice – IOF (AXIA Energia) Tax Assessment Notice – IOF (AXIA Energia) [Member] Tax Assessment Notice – IOF (AXIA Energia) Treasury Shares Treasury shares [member] Net assets Net assets Identifiable assets acquired (liabilities assumed) RAP Cycle by Company [Table] RAP Cycle by Company [Table] RAP Cycle by Company [Table] Boa Vista S.A. Boa Vista S.A [Member] This member stands for Boa Vista S.A. Dividends and Interests Receivables Dividends And Interests Receivables [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. FINANCIAL ASSETS AND LIABILITIES Disclosure of subsidiaries [line items] AXIA Energia, Amazonas Energia AXIA Energia, Amazonas Energia, 2026 [Member] AXIA Energia, Amazonas Energia, 2026 Total Annual Allowable Revenue, Net Annual Allowable Revenue, Net Cia Estadual de Distribuição de Energia Elétrica - CEEE Cia Estadual de Distribuição de Energia Elétrica - CEEE [Member] Cia Estadual de Distribuição de Energia Elétrica - CEEE Generation concessions and authorizations Concessions Under Operations And Maintenance [Member] This member stands for concessions under operations and maintenance. Reversals Judicial Settlement, Reversals Judicial Settlement, Reversals Schedule of the subsidiary Eletronorte's realization of deferred assets derived from tax losses and negative basis of social contribution Disclosure Of Subsidiary's Realization Of Deferred Assets Derived From Tax Losses And Negative Basis Of Social Contribution, Explanatory [Table Text Block] Disclosure of detailed information about the subsidiary's realization of deferred assets derived from tax losses and negative basis of social contribution. Debentures - IPCA vs CDI, July 16,2035 Debentures - IPCA vs CDI, July 16,2035 [Member] Debentures - IPCA vs CDI, July 16,2035 Vacation allowance Vacation Allowance, Current Represents the vacation allowance as of balance sheet date, classified as current. Addition Additions other than through business combinations, property, plant and equipment, including adjustments The amount of additions and adjustments to property, plant and equipment other than those acquired through business combinations. Percentage of voting equity interests previously held Percentage Of Voting Equity Interests Previously Held Percentage Of Voting Equity Interests Previously Held Serra do Facão Energia Serra do Facão Energia [Member] Serra do Facão Energia Participations in OCI of subsidiaries Increase (Decrease) Through Participations in Other Comprehensive Income Loss of Subsidiaries, Equity The increase (decrease) in equity resulting from participations in other comprehensive income loss of subsidiaries. 007/2008 Electricity Transmission Concessions, Corporate, Agreement, 41 [Member] This member stands for electricity transmission concessions, corporate, agreement, 41. Jirau Energia Jirau Energia [Member The member stands for Jirau Energia. Deferred tax assets on actuarial losses Deferred Tax Assets On Actuarial Losses [Member] Deferred Tax Assets On Actuarial Losses Payment of loans and financing and debentures - principal Payment of loans and financing and debentures - principal Repayments of borrowings, classified as financing activities Electricity transmission concessions – SPEs Electricity transmission concessions – SPEs [Member] Electricity transmission concessions – SPEs AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 1 AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 1 [Member] AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 1 OPERATING EXPENSES Operating Expenses, Disclosure, Explanatory [Text Block] The entire disclosure for operating expenses. Goiás Transmissão S.A. Goiás Transmissão S.A [Member] Goiás Transmissão S.A (Accruals) / decreases in operating assets Adjustments for decrease (increase) in assets Adjustments for decrease (increase) in assets to reconcile profit (loss) to net cash flow from (used in) operating activities. Net loss from discontinued operations Profit (loss) from discontinued operations Credit agreement, August 29,2025 Credit agreement, August 29,2025 [Member] Credit agreement, August 29,2025 SUPPLIERS Disclosure of trade and other payables [text block] Derivative financial instruments Non-current derivative financial assets Ifrs Statement Scenario [Axis] Ifrs Statement Scenario [Axis] Information by scenario to be reported. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures. AXIA Energia, Transnorte Energia - TNE, 2030 AXIA Energia, Transnorte Energia - TNE, 2030 [Member] AXIA Energia, Transnorte Energia - TNE, 2030 Impairment PECLD Accumulated impairment [member] Schedule of movement of property, plant, and equipment and average depreciation rate Disclosure of detailed information about property, plant and equipment [text block] Debentures, AXIA Energia Norte, Maturity 04/15/2031, Two Debentures, AXIA Energia Norte, Maturity 04/15/2031, Two [Member] Debentures, AXIA Energia Norte, Maturity 04/15/2031, Two Average annual rates in 2025 (%) Borrowings, interest rate Net cash provided by (used in) investing activities Cash flows from (used in) investing activities Schedule of derivative financial instruments Disclosure of derivative financial instruments [text block] Development banks Foreign Currency, Investment Banks Borrowings [Member] This member stands for borrowings with BASA FNO, BNDES, BNB and FINEP in foreign currency. Corumbá I UHE Corumb I This member stands for UHE Corumb I. Profit attributable to each class of shares - Continued Operation Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share REGULATORY FEES Description of Accounting Policy for Sectoral Charges [Policy Text Block] The description of the entity's accounting policy for sectoral charges. Personnel Employee benefits expense Credit agreement - EUR vs CDI, December 21,2026 Credit agreement - EUR vs CDI, December 21,2026 [Member] Credit agreement - EUR vs CDI, December 21,2026 Schedule of main assets and liabilities classified as held for sale Disclosure of assets and liabilities classified as held for sale explanatory [Table Text Block] The disclosure of detailed information about assets and liabilities held-for-sale . TOTAL CURRENT ASSETS Current assets Current assets João Borges João Borges [Member] João Borges 009/2011 Electricity Transmission Concessions, Corporate, Agreement, 46 [Member] This member stands for electricity transmission concessions, corporate, agreement, 46. Long-term commitments related to contracts for purchase of electricity and fuel Contractual capital commitments Environmental Environmental. This member stands for a provision for environmental legal proceedings. Disclosure of operating segments [table] Disclosure of operating segments [table] Post-employment benefit entities Post-employment benefit entities This member stands for post employment benefit entities. Segments [axis] Segments [axis] Types of risks [axis] Types of risks [axis] 006/2010 Electricity Transmission Concessions, Corporate, Agreement, 47 [Member] This member stands for electricity transmission concessions, corporate, agreement, 47. Others Other Estimated Obligations, Current Represents the other estimated obligation as of balance sheet date, classified as current. Trade and other payables [abstract] Trade and other payables [abstract] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 1 AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 1 [Member] AXIA Energia, Debenture Issuance – AXIA Energia Norte, 2032 1 AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 2 AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 2 [Member] AXIA Energia, Working Capital Strengthening – AXIA Energia Norte, 2028 2 Debt charges Compulsory Loan Debt Charges The amount of debt charges on compulsory loan. Schedule of restricted cash resources Disclosure of restricted cash and cash equivalents [text block] Credit agreement - US$ vs CDI, January 8,2025 Credit agreement - US$ vs CDI, January 8,2025 [Member] Credit agreement - US$ vs CDI, January 8,2025 Derivative financial liabilities held for hedging Derivative financial liabilities held for hedging Shares issued for settlement of compulsory loans (in shares) Shares Issued For Settlement Of Compulsory Loans Shares Issued For Settlement Of Compulsory Loans 003/2009 Electricity Transmission Concessions, Corporate, Agreement, 40 [Member] This member stands for electricity transmission concessions, corporate, agreement, 40. Disclosure of Debenture Issuance Disclosure of Debenture Issuance [Table Text Block] Disclosure of Debenture Issuance Designation of protected debt Derivative Financial Instruments for Debt Protection [Member] This member stands for derivative financial instruments for debt protection. NDF US$, April 30,2027 NDF US$, April 30,2027 [Member] NDF US$, April 30,2027 TAXES AND CONTRIBUTIONS TAXES AND CONTRIBUTIONS No definition available. Amendment Flag Amendment Flag Schedule of information of the main joint ventures and associates Schedule of information of joint ventures and associated companies [Table Text Block] Tabular disclosure of information of joint ventures and associated companies. Provisions for Litigation Current legal proceedings provision POST-EMPLOYMENT BENEFITS Description of accounting policy for employee benefits [text block] Dividends and interest on equity investments, net of Income Tax Dividends And Interest Receivable On Equity Investments, Net Of Income Tax, Current The amount of dividends and interest receivable on equity investments, net of Income Tax Withheld at Source, due from entities, classified as current. Total net operating income Revenue and other operating income Debentures, AXIA Energia Norte, Maturity 11/15/2032 Debentures, AXIA Energia Norte, Maturity 11/15/2032 [Member] Debentures, AXIA Energia Norte, Maturity 11/15/2032 Reimbursement rights Current Current reimbursement rights The amount of current reimbursement right representing the amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle obligation recognized as a separate asset. Method of assessment of expected credit losses [domain] Method of assessment of expected credit losses [domain] Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Hydroelectrict power units - AXIA Energia Sul Hydroelectrict power units - AXIA Energia Sul [Member] Hydroelectrict power units - AXIA Energia Sul 012/2007 Electricity Transmission Concessions, Corporate, Agreement, 42 [Member] This member stands for electricity transmission concessions, corporate, agreement, 42. Balance at the beginning of the period Balance at the end of the period Investment accounted for using equity method gross The gross amount of investments accounted for using the equity method. Nossa Senhora de Fátima Nossa Senhora de Fátima [Member] Nossa Senhora de Fátima Expected return on plan assets (%) Expected Return On Plan Assets Defined Benefit Plan Percentage of expected return on plan assets defined benefit plan . Schedule of additions to non-current assets by segment Additions to non current by segment disclosure [table text block] Tabular disclosure of additions to non-current assets by segment. Chapada do Piau II Chapada do Piau II The member stands for Chapada do Piau II. Contractual transmission assets Contractual Transmission Assets Current The amount of current contractual transmission assets. Schedule of changes in loans, financing and debentures Movements of loans and financing [table text block] The tabular disclosure of movements of loans and financing. Disclosure of Net Operating Revenue Disclosure of Net Operating Revenue [Table Text Block] Disclosure of Net Operating Revenue Debentures of the second series Debentures of the second series This member stand for debentures of second series Others Other Taxes [Member] This member stands for other taxes. Fixed‑income investments Fixed income investments, amount contributed to fair value of plan assets The amount that fixed income investments constitute of the fair value of defined benefit plan assets. Consolidated Entities [Axis] Consolidated Entities [Axis] Interest on income, fines, commission and fees Income from interest, commissions and fees The amount of income relating to interest, fees and commissions. 020/2010 Electricity Transmission Concessions, Corporate, Agreement, 45 [Member] This member stands for electricity transmission concessions, corporate, agreement, 45. Schedule of actuarial assumptions used to determine the present value of a defined benefit obligation and expense Schedule of Actuarial Assumptions Determine the Defined Benefit Obligation and the Expense [Table Text Block] The tabular disclosure of a actuarial assumptions used to determine the present value of a defined benefit obligation and expense. RGR returns Non-Current Non-Current Global Reversal Reserve Returns Non-Current Global Reversal Reserve Returns Tucuruí UHE Tucurui This member stands for UHE Tucurui. NDF US$, April 30,2025 NDF US$, April 30,2025 [Member] NDF US$, April 30,2025 Additions Additional provisions, other provisions Cash, Cash Equivalents: Cash [abstract] Post-employment benefit Current net defined benefit liability Deferred Income tax and social contribution Current tax assets, non-current 014/2012 Electricity Transmission Concessions, Corporate, Agreement, 43 [Member] This member stands for electricity transmission concessions, corporate, agreement, 43. Interligação Elétrica Garanhuns S.A. Interligao Eltrica Garanhuns S.A. – IE Garanhuns Represents the information pertaining to Interligao Eltrica Garanhuns S.A. - IE Garanhuns Dividends And Interests Receivables [Table] Dividends And Interests Receivables [Table] Schedule disclosing information related to dividends and interests on equity investments receivable. ELECTRICITY CONCESSIONS AND AUTHORIZATIONS Electric Power Concessions And Authorizations, Disclosure, Explanatory [Text Block] The entire disclosure for electric power concessions and authorizations. Long term purchase commitment [Axis] Long term purchase commitment [Axis] The axis of a table defines the long term purchase of commitment. Foreign‑Currency Loan, December 4, 2026 Foreign‑Currency Loan, December 4, 2026 [Member] Foreign‑Currency Loan, December 4, 2026 Disclosure of Judicial Settlement Disclosure of Judicial Settlement [Table Text Block] Disclosure of Judicial Settlement Currency [Axis] Currency [Axis] Historic amount demanded Ifrs Loss Contingency, Damages Sought, Value The value (monetary amount) of the award the plaintiff seeks in the legal matter. Loans and financing reserve – MESA Loans and financing reserve – MESA [Member] Loans and financing reserve – MESA EQUITY Description of accounting policy for issued capital [text block] Regulatory fees Adjustments for (decrease) increase in regulatory fees Adjustments for (decrease) increase in regulatory fees to reconcile profit (loss) to net cash flow from (used in) operating activities. Scenario (25%) Scenario (25%) This member stands for scenario of twenty five percentage variation. Schedule of subsidiaries Disclosure of interests in subsidiaries [text block] 13th‑salary charges Charges On End Of Year Bonus, Current Represents the charges on end-of-year bonus, as of balance sheet date, classified as current. Três Irmãos UHE Tres Irmaos This member stands for UHE Trs Irmos. ECL - Other credits ECL - Other credits ECL - Other credits Pedra Pedra This member stands for Pedra. COMPULSORY LOAN COMPULSORY LOAN No definition available. Funding Increase In Borrowings Through Fundings The increase in borrowings, resulting from fundings. EARNINGS PER SHARE Earnings per share [text block] Eletronorte, Second Issue Of Debentures Eletronorte, Second Issue Of Debentures [Member] This member stands for 2nd issue of debentures by Eletronorte. Disclosure of detailed information about property, plant and equipment [table] Disclosure of detailed information about property, plant and equipment [table] Net defined benefit liability Net defined benefit liability Acquisition of intangible assets Purchase of intangible assets, classified as investing activities 2025 HIGHLIGHTS Highlights [Line Items] Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.