Nature of Operations (Policy)	6 Months Ended
Jun. 30, 2026
Nature of Operations [Abstract]
Description of Business	Description of Business SUNation Energy, Inc. (“SUNE”, “SUNation Energy”, “we” or the “Company”) is a Delaware corporation, whose shares of Common Stock are listing on the Nasdaq Stock Market under its trading symbol “SUNE”. SUNation Energy’s vision is to power the energy transition through grass-roots growth of solar electricity paired with battery storage. The Company is a domestic operator and consolidator of residential solar, battery storage, and grid services solutions. Our strategy is focused on acquiring, integrating, and growing leading local and regional solar, storage, and energy services companies nationwide. Our current business units, Hawaii Energy Connection, LLC (“HEC”), and New York-based subsidiaries, the SUNation entities (collectively, “SUNation NY”) are engaged in the design, installation, and maintenance of solar energy systems across residential, commercial, and municipal sectors. Our team specializes in providing tailored solar solutions that meet the specific energy needs of each client, ensuring both efficiency and sustainability. In addition to our core solar services, we also offer energy storage systems to optimize energy use and increase reliability. Our New York business unit further integrates a broader range of services, including residential roofing solutions, to ensure seamless solar installations and long-term durability. Additionally, we provide community solar services that allow groups of individuals, businesses, or organizations to share the benefits of a single solar array, making renewable energy accessible to more people in the community. On April 9, 2026, the Company announced that its Board of Directors had authorized the review of a full range of strategic alternatives aimed at increasing shareholder value and best positioning the Company for long-term success. In connection with the strategic review, the Company has engaged Maxim Group, LLC to serve as its M&A and financial advisor to assist in this strategic process. The review included the consideration of a broad spectrum of possible actions, including, but not limited to, a potential sale of the Company, strategic merger or other business combinations, acquisitions, divestitures of assets, further optimization of the corporate structure, or other strategic or financial transactions that could enhance shareholder value and further optimize capital resources. On June 5, 2026, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with SUNation Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of the Company (the “Merger Sub”), and Suniva, Inc., a Delaware corporate (“Suniva”), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Suniva with Suniva surviving the merger as a wholly owned subsidiary of the Company (the “Suniva Merger”). Concurrently with the execution of the Merger Agreement, certain key stockholders of the Company (solely in their respective capacities as SUNation stockholders) holding approximately 10.4% of the outstanding shares of the Company’s capital stock entered into voting agreements with the Company and Suniva to vote all of their shares of the Company capital stock in favor of the adoption and approval of the Merger Agreement and the transactions contemplated thereby (the “Voting Agreements”). A further detailed description of the proposed Suniva Merger, and the Voting Agreements is contained in the Company’s Form 8-K, dated June 8, 2026, including a copy of the Merger Agreement and Voting Agreement included as exhibits thereto. The Company cannot currently set a definitive date for the completion of a strategic transaction, and there can be no assurance that the strategic transaction will result in the consummation thereof or any specific outcome; however, we currently anticipate the closing of the announced merger, assuming the satisfaction of all necessary conditions and regulatory clearances related thereto, would occur in the fourth quarter of 2026. Certain conditions and regulatory clearances and the timing related thereto may not be in our complete control and, therefore, the exact timeline to closing may change if or when needed. The Company has not set a timetable for the completion of a strategic transaction, and there can be no assurance that the exploration of a strategic transaction will result in any specific outcome. The Company does not intend to provide additional updates regarding this process unless the Board approves a particular course of action or determines additional disclosure is appropriate.
Reverse Stock Splits	Reverse Stock Split April 2025 Reverse Stock Split On April 3, 2025, the Company’s shareholders approved a reverse stock split of the Company’s common stock at a ratio within a range of 1-for-2 and 1-for-200 and granted the Company’s board of directors the discretion to determine the timing and ratio of the split within such range. Additionally, the shareholders also approved an increase in authorized shares to 1,000,000,000 shares. On April 9, 2025, the Company’s board of directors determined to effect the reverse stock split of the common stock at a 1-for-200 ratio (the “April Reverse Stock Split”) and approved an amendment (“April Reverse Stock Split Amendment”) to its Certificate of Incorporation to effect the April Reverse Stock Split. On April 16, 2025, the Company amended its Certificate of Incorporation to implement the April Reverse Stock Split. The Company's common stock began trading on a split-adjusted basis when the market opened on April 21, 2025 (the "April Effective Date"). As a result of the April Reverse Stock Split on the April Effective Date, every 200 shares of common stock then issued and outstanding automatically were combined into one share of common stock, with no change in par value per share. No fractional shares were outstanding following the April Reverse Stock Split, and any fractional shares that would have resulted from the April Reverse Stock Split were rounded up to the nearest whole share. The number of shares of common stock outstanding was reduced from 672,799,910 to 3,406,614 immediately following this stock split.

Nature of Operations (Policy)

6 Months Ended

Jun. 30, 2026

SUNation Energy, Inc. (“SUNE”, “SUNation Energy”, “we” or the “Company”) is a Delaware corporation, whose shares of Common Stock are listing on the Nasdaq Stock Market under its trading symbol “SUNE”.

SUNation Energy’s vision is to power the energy transition through grass-roots growth of solar electricity paired with battery storage. The Company is a domestic operator and consolidator of residential solar, battery storage, and grid services solutions. Our strategy is focused on acquiring, integrating, and growing leading local and regional solar, storage, and energy services companies nationwide.

Our current business units, Hawaii Energy Connection, LLC (“HEC”), and New York-based subsidiaries, the SUNation entities (collectively, “SUNation NY”) are engaged in the design, installation, and maintenance of solar energy systems across residential, commercial, and municipal sectors. Our team specializes in providing tailored solar solutions that meet the specific energy needs of each client, ensuring both efficiency and sustainability. In addition to our core solar services, we also offer energy storage systems to optimize energy use and increase reliability. Our New York business unit further integrates a broader range of services, including residential roofing solutions, to ensure seamless solar installations and long-term durability. Additionally, we provide community solar services that allow groups of individuals, businesses, or organizations to share the benefits of a single solar array, making renewable energy accessible to more people in the community.

On April 9, 2026, the Company announced that its Board of Directors had authorized the review of a full range of strategic alternatives aimed at increasing shareholder value and best positioning the Company for long-term success. In connection with the strategic review, the Company has engaged Maxim Group, LLC to serve as its M&A and financial advisor to assist in this strategic process. The review included the consideration of a broad spectrum of possible actions, including, but not limited to, a potential sale of the Company, strategic merger or other business combinations, acquisitions, divestitures of assets, further optimization of the corporate structure, or other strategic or financial transactions that could enhance shareholder value and further optimize capital resources.

On June 5, 2026, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with SUNation Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of the Company (the “Merger Sub”), and Suniva, Inc., a Delaware corporate (“Suniva”), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Suniva with Suniva surviving the merger as a wholly owned subsidiary of the Company (the “Suniva Merger”).

Concurrently with the execution of the Merger Agreement, certain key stockholders of the Company (solely in their respective capacities as SUNation stockholders) holding approximately 10.4% of the outstanding shares of the Company’s capital stock entered into voting agreements with the Company and Suniva to vote all of their shares of the Company capital stock in favor of the adoption and approval of the Merger Agreement and the transactions contemplated thereby (the “Voting Agreements”).

A further detailed description of the proposed Suniva Merger, and the Voting Agreements is contained in the Company’s Form 8-K, dated June 8, 2026, including a copy of the Merger Agreement and Voting Agreement included as exhibits thereto.

The Company cannot currently set a definitive date for the completion of a strategic transaction, and there can be no assurance that the strategic transaction will result in the consummation thereof or any specific outcome; however, we currently anticipate the closing of the announced merger, assuming the satisfaction of all necessary conditions and regulatory clearances related thereto, would occur in the fourth quarter of 2026. Certain conditions and regulatory

clearances and the timing related thereto may not be in our complete control and, therefore, the exact timeline to closing may change if or when needed.

The Company has not set a timetable for the completion of a strategic transaction, and there can be no assurance that the exploration of a strategic transaction will result in any specific outcome. The Company does not intend to provide additional updates regarding this process unless the Board approves a particular course of action or determines additional disclosure is appropriate.

Reverse Stock Splits

Reverse Stock Split

April 2025 Reverse Stock Split

On April 3, 2025, the Company’s shareholders approved a reverse stock split of the Company’s common stock at a ratio within a range of 1-for-2 and 1-for-200 and granted the Company’s board of directors the discretion to determine the timing and ratio of the split within such range. Additionally, the shareholders also approved an increase in authorized shares to 1,000,000,000 shares.

On April 9, 2025, the Company’s board of directors determined to effect the reverse stock split of the common stock at a 1-for-200 ratio (the “April Reverse Stock Split”) and approved an amendment (“April Reverse Stock Split Amendment”) to its Certificate of Incorporation to effect the April Reverse Stock Split.

On April 16, 2025, the Company amended its Certificate of Incorporation to implement the April Reverse Stock Split. The Company's common stock began trading on a split-adjusted basis when the market opened on April 21, 2025 (the "April Effective Date").

As a result of the April Reverse Stock Split on the April Effective Date, every 200 shares of common stock then issued and outstanding automatically were combined into one share of common stock, with no change in par value per share. No fractional shares were outstanding following the April Reverse Stock Split, and any fractional shares that would have resulted from the April Reverse Stock Split were rounded up to the nearest whole share. The number of shares of common stock outstanding was reduced from 672,799,910 to 3,406,614 immediately following this stock split.