Organization and Description of Business	12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business Description of Business Spruce Power Holding Corporation and its subsidiaries (“Spruce Power” or the “Company”) is a leading owner and operator of distributed solar energy assets across the United States (the “U.S.”), offering subscription-based services to approximately 84,000 home solar assets and customer contracts, making renewable energy more accessible to everyone. The Company is engaged in the ownership and maintenance of home solar energy systems for homeowners in the U.S. The Company’s primary customers are homeowners and its core solar service offerings to these customers generate revenues primarily through (i) both the lease of, and the sale of electricity generated by its home solar energy systems to homeowners pursuant to long-term Customer Agreements as defined below, which require the homeowners to make recurring monthly payments, (ii) third party contracts to sell solar renewable energy credits (“SRECs”) generated by the Company’s home solar energy systems for contracted prices, and (iii) the servicing of third-party owned solar energy systems through the Company’s Spruce Pro servicing platform, which is contracted to offer portfolio managed services to third party owners, as well as to the Company’s portfolio of home solar energy systems (the “Portfolio”). These portfolio managed services offered include (a) billing and collections/asset recovery, (b) account support services, (c) financial asset management, (d) homeowner support and servicing technology, (e) asset operations, and (f) transaction and execution services related to SRECs. In addition to the Company’s core solar service offerings, the Company generates cash flows and earns interest income from customer contracts related to the SEMTH Master Lease, defined below. The Company holds subsidiary fund companies, defined below as the Funds, that own and operate the Company’s portfolio of home solar energy systems, which are subject to solar lease agreements (“SLAs”) and power purchase agreements (“PPAs”, together with the SLAs, “Customer Agreements”) with residential customers who benefit from the production of electricity generated by the Company’s Portfolio, which may qualify for subsidies, renewable energy credits and other incentives as provided by the federal government and various states and local agencies. These benefits have generally been retained by the Company's subsidiaries that own the systems, with the exception of the investment tax credit (“ITCs”) under Section 48 of the Internal Revenue Code, as amended, (the “IRC”), which were generally passed through to the various financing partners of the solar energy systems. Corporate History and Discontinued Operations Historically, as XL Fleet Corp. (“XL Fleet”), the Company provided fleet electrification solutions for commercial vehicles in North America, offering its systems for vehicle electrification (the “Drivetrain” business) and offering and installing charging stations to enable customers to develop charging infrastructure required for electrified vehicles (the “XL Grid” business). In early 2022, the Company performed a strategic review of its overall business operations, which resulted in (i) the sale of the Company’s Drivetrain and XL Grid businesses in January 2023, and (ii) the decision to pursue merger and acquisition (“M&A”) opportunities. On September 9, 2022, the Company acquired 100% of the membership interests of Spruce Holding Company 1 LLC, Spruce Holding Company 2 LLC, Spruce Holding Company 3 LLC and Spruce Manager LLC (collectively and together with their subsidiaries, “Legacy Spruce Power”) (See Note 3. Business Combinations), which was one of the largest privately held owner and operator of home solar energy systems in the U.S. at the time of the transaction. In November 2022, following the acquisition of Legacy Spruce Power, the Company changed its corporate name from “XL Fleet Corp.” to “Spruce Power Holding Corporation.” Additionally, the Company changed its ticker symbol from “XL” to “SPRU.” After the acquisition of Legacy Spruce Power, the Company also commenced a review of its XL Grid business to evaluate its strategic fit with Legacy Spruce Power, and in the fourth quarter of 2022, the Company entered into a non-binding letter of intent for the sale of World Energy Efficiency Services, LLC (“World Energy”) for an immaterial amount. The divestiture of World Energy closed in January 2023 and the Company subsequently ceased its XL Grid operations. Both the Drivetrain and XL Grid operations are presented as discontinued operations in the consolidated financial statements. In the first quarter of 2023, the Company completed the acquisition of all issued and outstanding interests in SS Holdings 2017, LLC and its subsidiaries (“SEMTH”) from certain funds managed by HPS Investment Partners, LLC, pursuant to a membership interest purchase and sale agreement as of that date (the “SEMTH Acquisition”). The SEMTH related asset includes a 20-year use rights to customer payment streams of approximately 22,500 customer contracts (the “SEMTH Master Lease”). Subsequently on August 18, 2023, the Company acquired approximately 2,400 home solar assets and customer contracts, with an average remaining contract life of approximately 11 years, from a publicly traded, regulated utility company (the “Tredegar Acquisition”). In the fourth quarter of 2024, the Company completed the acquisition of a residential solar portfolio consisting of approximately 9,800 home solar assets and customer contracts, with an average remaining contract life of approximately 10 years, from a publicly traded energy services company (the “NJR Acquisition”). During the year ended December 31, 2025, the Company acquired 200 additional systems for approximately $5.3 million in cash, inclusive of transaction costs of approximately $0.1 million. With the completion of the NJR Acquisition, the Company has, in the aggregate, 14 portfolios of rooftop solar Customer Agreements. In the aggregate, as of December 31, 2025, the Company offered subscription-based services and owned the cash flows from approximately 84,000 home solar assets and customer contracts. Going Concern These consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) assuming the Company will continue as a going concern. The Company’s debt obligations under the SP1 Facility are non-recourse to the Company (see Note 7. Non-Recourse Debt included within the accompanying audited consolidated financial statements). On March 27, 2026, the Company entered into the SP1 Facility Amendment to extend the maturity of this facility to October 30, 2026 (the “Amended SP1 Maturity Date”), unless a signed term sheet for a long-term financing is obtained, in which case the extended maturity date will be January 30, 2027, see Note 7. Because (i) the Amended SP1 Maturity Date is within twelve months from the date the accompanying audited consolidated financial statements are issued, (ii) the Company has not yet entered into a commitment to refinance the SP1 Facility, (iii) the Company has determined that it is unlikely to have sufficient cash on hand or proceeds from currently available liquidity sources to satisfy the SP1 Facility at the Amended SP1 Maturity Date (iv) the Company had negative working capital of $122.9 million as of December 31, 2025 solely due to the current maturity of the SP1 Facility at that date, and (v) the Company has experienced recurring net losses and negative cash flows from operations for the year ended December 31, 2025, these conditions raise substantial doubt about the Company’s ability to continue as a going concern. Our consolidated financial statements do not include any adjustments that may result from the outcome of this uncertainty. The Company plans to refinance the SP1 Facility prior to the Amended SP1 Maturity Date consistent with the Company’s historical financing strategy for investing in solar assets on a leveraged basis. The Company has commenced preliminary discussions with potential lenders, which are currently being reviewed by management. The Company’s management believes that such refinancing will be completed prior to the Amended SP1 Maturity Date. However, the Company can offer no assurances it will be able to obtain financing at acceptable terms or at all. Therefore, the Company has concluded that there is substantial doubt about its ability to continue as a going concern. Should the Company be unsuccessful in refinancing the SP1 Facility, this could result in a foreclosure of collateral and negatively impact operations. Further, an event of default on the SP1 Facility, if not cured in the permittable time allowed under the agreement, would result in a cross default on the Second Key Bank Credit Agreement, which is also non-recourse.

Spruce Power Holding Corporation and its subsidiaries (“Spruce Power” or the “Company”) is a leading owner and operator of distributed solar energy assets across the United States (the “U.S.”), offering subscription-based services to approximately 84,000 home solar assets and customer contracts, making renewable energy more accessible to everyone. The Company is engaged in the ownership and maintenance of home solar energy systems for homeowners in the U.S.

The Company’s primary customers are homeowners and its core solar service offerings to these customers generate revenues primarily through (i) both the lease of, and the sale of electricity generated by its home solar energy systems to homeowners pursuant to long-term Customer Agreements as defined below, which require the homeowners to make recurring monthly payments, (ii) third party contracts to sell solar renewable energy credits (“SRECs”) generated by the Company’s home solar energy systems for contracted prices, and (iii) the servicing of third-party owned solar energy systems through the Company’s Spruce Pro servicing platform, which is contracted to offer portfolio managed services to third party owners, as well as to the Company’s portfolio of home solar energy systems (the “Portfolio”). These portfolio managed services offered include (a) billing and collections/asset recovery, (b) account support services, (c) financial asset management, (d) homeowner support and servicing technology, (e) asset operations, and (f) transaction and execution services related to SRECs.

The Company holds subsidiary fund companies, defined below as the Funds, that own and operate the Company’s portfolio of home solar energy systems, which are subject to solar lease agreements (“SLAs”) and power purchase agreements (“PPAs”, together with the SLAs, “Customer Agreements”) with residential customers who benefit from the production of electricity generated by the Company’s Portfolio, which may qualify for subsidies, renewable energy credits and other incentives as provided by the federal government and various states and local agencies. These benefits have generally been retained by the Company's subsidiaries that own the systems, with the exception of the investment tax credit (“ITCs”) under Section 48 of the Internal Revenue Code, as amended, (the “IRC”), which were generally passed through to the various financing partners of the solar energy systems.

Historically, as XL Fleet Corp. (“XL Fleet”), the Company provided fleet electrification solutions for commercial vehicles in North America, offering its systems for vehicle electrification (the “Drivetrain” business) and offering and installing charging stations to enable customers to develop charging infrastructure required for electrified vehicles (the “XL Grid” business). In early 2022, the Company performed a strategic review of its overall business operations, which resulted in (i) the sale of the Company’s Drivetrain and XL Grid businesses in January 2023, and (ii) the decision to pursue merger and acquisition (“M&A”) opportunities. On September 9, 2022, the Company acquired 100% of the membership interests of Spruce Holding Company 1 LLC, Spruce Holding Company 2 LLC, Spruce Holding Company 3 LLC and Spruce Manager LLC (collectively and together with their subsidiaries, “Legacy Spruce Power”) (See Note 3. Business Combinations), which was one of the largest privately held owner and operator of home solar energy systems in the U.S. at the time of the transaction. In November 2022, following the acquisition of Legacy Spruce Power, the Company changed its corporate name from “XL Fleet Corp.” to “Spruce Power Holding Corporation.” Additionally, the Company changed its ticker symbol from “XL” to “SPRU.”

After the acquisition of Legacy Spruce Power, the Company also commenced a review of its XL Grid business to evaluate its strategic fit with Legacy Spruce Power, and in the fourth quarter of 2022, the Company entered into a non-binding letter of intent for the sale of World Energy Efficiency Services, LLC (“World Energy”) for an immaterial amount. The divestiture of World Energy closed in January 2023 and the Company subsequently ceased its XL Grid operations.

In the first quarter of 2023, the Company completed the acquisition of all issued and outstanding interests in SS Holdings 2017, LLC and its subsidiaries (“SEMTH”) from certain funds managed by HPS Investment Partners, LLC, pursuant to a membership interest purchase and sale agreement as of that date (the “SEMTH Acquisition”). The SEMTH related asset includes a 20-year use rights to customer payment streams of approximately 22,500 customer contracts (the “SEMTH Master Lease”). Subsequently on August 18, 2023, the Company acquired approximately 2,400 home solar assets and customer contracts, with an average remaining contract life of approximately 11 years, from a publicly traded, regulated utility company (the “Tredegar Acquisition”).

In the fourth quarter of 2024, the Company completed the acquisition of a residential solar portfolio consisting of approximately 9,800 home solar assets and customer contracts, with an average remaining contract life of approximately 10 years, from a publicly traded energy services company (the “NJR Acquisition”). During the year ended December 31, 2025, the Company acquired 200 additional systems for approximately $5.3 million in cash, inclusive of transaction costs of approximately $0.1 million.

With the completion of the NJR Acquisition, the Company has, in the aggregate, 14 portfolios of rooftop solar Customer Agreements. In the aggregate, as of December 31, 2025, the Company offered subscription-based services and owned the cash flows from approximately 84,000 home solar assets and customer contracts.

The Company’s debt obligations under the SP1 Facility are non-recourse to the Company (see Note 7. Non-Recourse Debt included within the accompanying audited consolidated financial statements). On March 27, 2026, the Company entered into the SP1 Facility Amendment to extend the maturity of this facility to October 30, 2026 (the “Amended SP1 Maturity Date”), unless a signed term sheet for a long-term financing is obtained, in which case the extended maturity date will be January 30, 2027, see Note 7. Because (i) the Amended SP1 Maturity Date is within twelve months from the date the accompanying audited consolidated financial statements are issued, (ii) the Company has not yet entered into a commitment to refinance the SP1 Facility, (iii) the Company has determined that it is unlikely to have sufficient cash on hand or proceeds from currently available liquidity sources to satisfy the SP1 Facility at the Amended SP1 Maturity Date (iv) the Company had negative working capital of $122.9 million as of December 31, 2025 solely due to the current maturity of the SP1 Facility at that date, and (v) the Company has experienced recurring net losses and negative cash flows from operations for the year ended December 31, 2025, these conditions raise substantial doubt about the Company’s ability to continue as a going concern. Our consolidated financial statements do not include any adjustments that may result from the outcome of this uncertainty.

The Company plans to refinance the SP1 Facility prior to the Amended SP1 Maturity Date consistent with the Company’s historical financing strategy for investing in solar assets on a leveraged basis. The Company has commenced preliminary discussions with potential lenders, which are currently being reviewed by management. The Company’s management believes that such refinancing will be completed prior to the Amended SP1 Maturity Date. However, the Company can offer no assurances it will be able to obtain financing at acceptable terms or at all. Therefore, the Company has concluded that there is substantial doubt about its ability to continue as a going concern. Should the Company be unsuccessful in refinancing the SP1 Facility, this could result in a foreclosure of collateral and negatively impact operations. Further, an event of default on the SP1 Facility, if not cured in the permittable time allowed under the agreement, would result in a cross default on the Second Key Bank Credit Agreement, which is also non-recourse.