Property, Plant and Equipment	6 Months Ended
Jun. 30, 2026
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 10. Property, Plant and Equipment CVOW Commercial Project – Estimated Total Project Cost As discussed in Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2025, Virginia Power is constructing the CVOW Commercial Project. Installation of the final turbines comprising the 2.6 GW project is expected to be completed by the end of 2027. The estimated total project cost is approximately $11.7 billion (excluding financing costs and including $0.1 billion of contingency) which reflects revised network upgrade costs assigned by PJM to the CVOW Commercial Project, an estimated impact of certain tariffs which became effective in April 2026 and updated turbine installation projections as well as previously included estimated impacts of a temporary suspension of work order, certain tariffs including those which became effective during 2025, the impact of the U.S. Supreme Court’s ruling in late February 2026 and tariffs which became effective in late February 2026. The Companies’ projected impact of tariffs on expected total project cost is subject to change due to the inherent uncertainty associated with which tariffs, if any, may be in effect and the associated requirements and rates of such tariffs. The expected total project cost reflects a decrease of approximately $0.4 billion, relative to both Virginia Power’s January and May 2026 construction update filings, associated with a revision to projected onshore electrical interconnection costs and network upgrade costs allocated by PJM to the CVOW Commercial Project. The expected total project cost also reflects an increase of approximately $0.4 billion, relative to both Virginia Power’s January and May 2026 construction update filings, $0.3 billion of which is associated with updated projections for turbine installations reflecting weather and other conditions with the remainder associated with other factors experienced, including increased fuel costs, during installations completed through July 2026. In addition, the expected total project cost reflects an increase of approximately $0.2 billion, relative to Virginia Power’s May 2026 construction update filing, associated with revised Section 232 tariffs enacted in April 2026 on equipment expected to be delivered from April 2026 through the end of 2027 that contains steel, aluminum and/or copper products, including the associated impact such revised tariffs had on tariffs enacted in late February 2026 on equipment expected to be delivered from February 2026 through July 2026 that originates from Mexico, Canada, a European Union member or other applicable countries. Relative to Virginia Power’s January 2026 construction update filing, the expected impact of tariffs is a net increase of approximately $0.1 billion as the increase discussed above related to April 2026 revision of Section 232 tariffs is partially offset by the reversal of approximately $0.2 billion associated with tariffs on equipment expected to be delivered from March 2025 through March 2026 that originates from Mexico, Canada, a European Union member or other applicable countries that were the subject of a U.S. Supreme Court’s ruling in late February 2026, and the estimated impact of new tariffs subsequently enacted in late February 2026 on equipment expected to be delivered from February 2026 through July 2026 that originates from Mexico, Canada, a European Union member or other applicable countries. The actual tariffs to be incurred are dependent upon the tariff requirements and rates, if any, at the time of delivery of the specific component. As a result of the revised total project cost estimates and cost sharing mechanism, for the three and six months ended June 30, 2026 Virginia Power recorded a net charge for costs not expected to be recovered from customers of $246 million and $129 million, respectively, within impairments of assets and other charges (benefits), which includes $123 million and $64 million, respectively, attributable to noncontrolling interests, and an associated income tax benefit of $32 million and $17 million, respectively. For the three and six months ended June 30, 2025 Virginia Power recorded a charge for costs not expected to be recovered from customers of $51 million and $96 million, respectively, within impairment of assets and other charges (benefits), which includes $26 million and $48 million, respectively, attributable to noncontrolling interests, and an associated income tax benefit of $6 million and $12 million, respectively. All such amounts are reflected in the Corporate and Other segment in the Companies’ Consolidated Statements of Income. See Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2025 for more information on the cost sharing mechanism in the Virginia Commission’s December 2022 order and Stonepeak’s 50% noncontrolling interest in the CVOW Commercial Project. The estimated total project cost above reflects the Companies’ best estimate of the remaining construction costs, including contingency of approximately 7% on such remaining amounts. Such estimate could potentially change for items, certain of which are beyond the Companies’ control, including but not limited to fuel for transportation and installation, the impact of applicable tariffs including any potential impact of Section 232 investigations, costs to maintain necessary permits, approvals and authorizations, any additional suspension of work orders, ability of key suppliers and contractors to timely satisfy their obligations under existing contracts, marine wildlife, actual network upgrade costs allocated by PJM, adverse weather and/or any severe weather events. Any additional increase in such costs in excess of the contingency included in the estimated total project cost would be subject to the cost sharing mechanisms discussed above and could have a material impact on the Companies’ future financial condition, results of operations and/or cash flows. Nonregulated Solar Generation Facilities In March 2026, Dominion Energy committed to a plan to sell certain nonregulated solar generation facilities within its Contracted Energy segment. As a result of meeting the requirements to be classified as held for sale, Dominion Energy recorded an impairment charge of $78 million ($60 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statement of Income (reflected in the Corporate and Other segment) for the three months ended March 31, 2026 to adjust the net assets associated with such facilities to their estimated fair value less cost to sell, using a market approach, of $500 million. In May 2026, Dominion Energy entered into an agreement with Enel to sell certain of these nonregulated solar generation facilities within its Contracted Energy segment for $140 million in cash, subject to customary closing adjustments. The transaction is expected to close by the end of 2026, contingent on clearance or approval under the HSR and by FERC as well as other customary closing and regulatory conditions. In July 2026, the Federal Trade Commission granted early termination of the waiting period under the HSR. At June 30, 2026, the carrying amounts of major classes of assets held for sale are composed primarily of $262 million of net property, plant and equipment, as well as operating lease assets and a valuation allowance for assets held for sale with the carrying amount of major classes of liabilities held for sale composed primarily of deferred investment tax credits and operating lease liabilities. Also during the second quarter of 2026, Dominion Energy determined that it no longer had the intent to sell the remaining nonregulated solar generation facilities included in the March plan and reclassified their respective balances from held for sale to held and used at the lower of their original carrying amounts before the asset was classified as held for sale, adjusted for any depreciation expense not recognized while they were classified as held for sale, or their fair value. The balances primarily included property, plant and equipment, operating lease assets, deferred investment tax credits and operating lease liabilities. Nonregulated Renewable Natural Gas Facilities In April 2026, Dominion Energy commenced an evaluation of its long-term intentions for its nonregulated renewable natural gas facilities within Contracted Energy. In connection with that evaluation, Dominion Energy expects that it is more likely than not that the nonregulated renewable natural gas facilities will be sold before the end of their useful lives and therefore evaluated the associated long-lived assets for recoverability during the second quarter of 2026. Using a probability-weighted approach, Dominion Energy determined Contracted Energy’s nonregulated renewable natural gas facilities were impaired and recorded a charge of $820 million ($640 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statement of Income (reflected in the Corporate and Other segment) for the three and six months ended June 30, 2026 to adjust the property, plant and equipment, net of associated deferred investment tax credits, down to its estimated fair value of $468 million. The fair value was estimated using an income approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risks inherent in the future cash flows and market prices.

Property, Plant and Equipment

6 Months Ended

Jun. 30, 2026

Property, Plant and Equipment [Abstract]

Note 10. Property, Plant and Equipment

CVOW Commercial Project – Estimated Total Project Cost

As discussed in Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2025, Virginia Power is constructing the CVOW Commercial Project. Installation of the final turbines comprising the 2.6 GW project is expected to be completed by the end of 2027. The estimated total project cost is approximately $11.7 billion (excluding financing costs and including $0.1 billion of contingency) which reflects revised network upgrade costs assigned by PJM to the CVOW Commercial Project, an estimated impact of certain tariffs

which became effective in April 2026 and updated turbine installation projections as well as previously included estimated impacts of a temporary suspension of work order, certain tariffs including those which became effective during 2025, the impact of the U.S. Supreme Court’s ruling in late February 2026 and tariffs which became effective in late February 2026. The Companies’ projected impact of tariffs on expected total project cost is subject to change due to the inherent uncertainty associated with which tariffs, if any, may be in effect and the associated requirements and rates of such tariffs.

The expected total project cost reflects a decrease of approximately $0.4 billion, relative to both Virginia Power’s January and May 2026 construction update filings, associated with a revision to projected onshore electrical interconnection costs and network upgrade costs allocated by PJM to the CVOW Commercial Project. The expected total project cost also reflects an increase of approximately $0.4 billion, relative to both Virginia Power’s January and May 2026 construction update filings, $0.3 billion of which is associated with updated projections for turbine installations reflecting weather and other conditions with the remainder associated with other factors experienced, including increased fuel costs, during installations completed through July 2026. In addition, the expected total project cost reflects an increase of approximately $0.2 billion, relative to Virginia Power’s May 2026 construction update filing, associated with revised Section 232 tariffs enacted in April 2026 on equipment expected to be delivered from April 2026 through the end of 2027 that contains steel, aluminum and/or copper products, including the associated impact such revised tariffs had on tariffs enacted in late February 2026 on equipment expected to be delivered from February 2026 through July 2026 that originates from Mexico, Canada, a European Union member or other applicable countries. Relative to Virginia Power’s January 2026 construction update filing, the expected impact of tariffs is a net increase of approximately $0.1 billion as the increase discussed above related to April 2026 revision of Section 232 tariffs is partially offset by the reversal of approximately $0.2 billion associated with tariffs on equipment expected to be delivered from March 2025 through March 2026 that originates from Mexico, Canada, a European Union member or other applicable countries that were the subject of a U.S. Supreme Court’s ruling in late February 2026, and the estimated impact of new tariffs subsequently enacted in late February 2026 on equipment expected to be delivered from February 2026 through July 2026 that originates from Mexico, Canada, a European Union member or other applicable countries. The actual tariffs to be incurred are dependent upon the tariff requirements and rates, if any, at the time of delivery of the specific component.

As a result of the revised total project cost estimates and cost sharing mechanism, for the three and six months ended June 30, 2026 Virginia Power recorded a net charge for costs not expected to be recovered from customers of $246 million and $129 million, respectively, within impairments of assets and other charges (benefits), which includes $123 million and $64 million, respectively, attributable to noncontrolling interests, and an associated income tax benefit of $32 million and $17 million, respectively. For the three and six months ended June 30, 2025 Virginia Power recorded a charge for costs not expected to be recovered from customers of $51 million and $96 million, respectively, within impairment of assets and other charges (benefits), which includes $26 million and $48 million, respectively, attributable to noncontrolling interests, and an associated income tax benefit of $6 million and $12 million, respectively. All such amounts are reflected in the Corporate and Other segment in the Companies’ Consolidated Statements of Income. See Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2025 for more information on the cost sharing mechanism in the Virginia Commission’s December 2022 order and Stonepeak’s 50% noncontrolling interest in the CVOW Commercial Project.

The estimated total project cost above reflects the Companies’ best estimate of the remaining construction costs, including contingency of approximately 7% on such remaining amounts. Such estimate could potentially change for items, certain of which are beyond the Companies’ control, including but not limited to fuel for transportation and installation, the impact of applicable tariffs including any potential impact of Section 232 investigations, costs to maintain necessary permits, approvals and authorizations, any additional suspension of work orders, ability of key suppliers and contractors to timely satisfy their obligations under existing contracts, marine wildlife, actual network upgrade costs allocated by PJM, adverse weather and/or any severe weather events. Any additional increase in such costs in excess of the contingency included in the estimated total project cost would be subject to the cost sharing mechanisms discussed above and could have a material impact on the Companies’ future financial condition, results of operations and/or cash flows.

Nonregulated Solar Generation Facilities

In March 2026, Dominion Energy committed to a plan to sell certain nonregulated solar generation facilities within its Contracted Energy segment. As a result of meeting the requirements to be classified as held for sale, Dominion Energy recorded an impairment charge of $78 million ($60 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statement of Income (reflected in the Corporate and Other segment) for the three months ended March 31, 2026 to adjust the net assets associated with such facilities to their estimated fair value less cost to sell, using a market approach, of $500 million. In May 2026, Dominion Energy entered into an agreement with Enel to sell certain of these nonregulated solar generation facilities within its Contracted Energy segment for $140 million in cash, subject to customary closing adjustments. The transaction is expected to close by the end of 2026, contingent on clearance or approval under the HSR and by FERC as well as other customary closing and regulatory conditions. In July 2026, the Federal Trade Commission granted early termination of the waiting period under the HSR. At June 30, 2026, the carrying

amounts of major classes of assets held for sale are composed primarily of $262 million of net property, plant and equipment, as well as operating lease assets and a valuation allowance for assets held for sale with the carrying amount of major classes of liabilities held for sale composed primarily of deferred investment tax credits and operating lease liabilities. Also during the second quarter of 2026, Dominion Energy determined that it no longer had the intent to sell the remaining nonregulated solar generation facilities included in the March plan and reclassified their respective balances from held for sale to held and used at the lower of their original carrying amounts before the asset was classified as held for sale, adjusted for any depreciation expense not recognized while they were classified as held for sale, or their fair value. The balances primarily included property, plant and equipment, operating lease assets, deferred investment tax credits and operating lease liabilities.

Nonregulated Renewable Natural Gas Facilities

In April 2026, Dominion Energy commenced an evaluation of its long-term intentions for its nonregulated renewable natural gas facilities within Contracted Energy. In connection with that evaluation, Dominion Energy expects that it is more likely than not that the nonregulated renewable natural gas facilities will be sold before the end of their useful lives and therefore evaluated the associated long-lived assets for recoverability during the second quarter of 2026. Using a probability-weighted approach, Dominion Energy determined Contracted Energy’s nonregulated renewable natural gas facilities were impaired and recorded a charge of $820 million ($640 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statement of Income (reflected in the Corporate and Other segment) for the three and six months ended June 30, 2026 to adjust the property, plant and equipment, net of associated deferred investment tax credits, down to its estimated fair value of $468 million. The fair value was estimated using an income approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risks inherent in the future cash flows and market prices.