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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Letters of Credit As of December 31, 2024 and 2023, the Company had $47.3 million and $37.0 million, respectively, of unused letters of credit outstanding, which each carry fees of 0.50% - 3.25%, respectively. Guarantees Certain tax equity funds and debt facilities require the Company to maintain an aggregate amount of $35.0 million of unencumbered cash and cash equivalents at the end of each month. Operating and Finance Leases The Company leases real estate under non-cancellable operating leases and equipment under finance leases. The components of lease expense were as follows (in thousands):
|  | For the Year Ended December 31,
|  | 2024 |  | 2023 |  | 2022
Finance lease cost: |  |  |  |  |  |
Amortization of right-of-use assets |  | $ | 29,332 |  |  | $ | 18,827 |  |  | $ | 15,873 |
Interest on lease liabilities |  | 5,704 |  |  | 3,291 |  |  | 1,127 |
Operating lease cost |  | 31,742 |  |  | 34,937 |  |  | 31,966 |
Short-term lease cost |  | 2,857 |  |  | 2,025 |  |  | 2,602 |
Variable lease cost |  | 9,828 |  |  | 11,516 |  |  | 9,246 |
Sublease income |  | (3,132) |  |  | (4,667) |  |  | (3,780) |
Total lease cost |  | $ | 76,331 |  |  | $ | 65,929 |  |  | $ | 57,034 |
Other information related to leases was as follows (in thousands):
|  | For the Year Ended December 31,
|  | 2024 |  | 2023 |  | 2022
Cash paid for amounts included in the measurement of lease liabilities |  |  |  |  |  |
Operating cash flows from operating leases |  | $ | 35,473 |  |  | $ | 39,157 |  |  | $ | 34,233 |
Operating cash flows from finance leases |  | 5,588 |  |  | 2,952 |  |  | 896 |
Financing cash flows from finance leases |  | 27,240 |  |  | 23,279 |  |  | 14,146 |
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |  |  |
Operating leases |  | 14,461 |  |  | 21,417 |  |  | 38,543 |
Finance leases |  | 36,991 |  |  | 87,726 |  |  | 21,030 |
Weighted average remaining lease term (years): |  |  |  |  |  |
Operating leases |  | 4.56 |  | 4.92 |  | 5.26
Finance leases |  | 3.48 |  | 4.07 |  | 2.86
Weighted average discount rate: |  |  |  |  |  |
Operating leases |  | 5.3 | % |  | 4.4 | % |  | 3.8 | %
Finance leases |  | 5.9 | % |  | 5.6 | % |  | 3.7 | %
Future minimum lease commitments under non-cancellable leases as of December 31, 2024 were as follows (in thousands):
|  | Operating Leases | Sublease Income | Net Operating Leases |  | Finance leases
2025 |  | $ | 33,334 |  | $ | 2,700 |  | $ | 30,634 |  |  | $ | 30,556 |
2026 |  | 28,409 |  | 2,191 |  | 26,218 |  |  | 29,601 |
2027 |  | 18,353 |  | 1,366 |  | 16,987 |  |  | 25,883 |
2028 |  | 10,626 |  | — |  | 10,626 |  |  | 14,273 |
2029 |  | 9,259 |  | — |  | 9,259 |  |  | 1,348 |
Thereafter |  | 15,833 |  | — |  | 15,833 |  |  | — |
Total future lease payments |  | 115,814 |  | 6,257 |  | 109,557 |  |  | 101,661 |
Less: Amount representing interest |  | (12,945) |  | — |  | (12,945) |  |  | (9,477) |
Present value of future payments |  | 102,869 |  | 6,257 |  | 96,612 |  |  | 92,184 |
Less: Amount for tenant incentives |  | — |  | — |  | — |  |  | — |
Revised Present value of future payments |  | 102,869 |  | 6,257 |  | 96,612 |  |  | 92,184 |
Less: Current portion |  | (28,784) |  | (2,700) |  | (26,084) |  |  | (26,045) |
Long term portion |  | $ | 74,085 |  | $ | 3,557 |  | $ | 70,528 |  |  | $ | 66,139 |
Purchase Commitment The Company entered into a purchase commitment, which has the ability to be canceled without significant penalties, with a supplier to purchase $574.0 million of batteries by the end of the fourth quarter of 2025. Warranty Accrual The Company accrues warranty costs when revenue is recognized for solar energy systems sales, based on the estimated future costs of meeting its warranty obligations. Warranty costs primarily consist of replacement costs for supplies and labor costs for service personnel since warranties for equipment and materials are covered by the original manufacturer’s warranty (other than a small deductible in certain cases). As such, the warranty reserve is immaterial in all periods presented. The Company makes and revises these estimates based on the number of solar energy systems under warranty, the Company’s historical experience with warranty claims, assumptions on warranty claims to occur over a systems’ warranty period and the Company’s estimated replacement costs. A warranty is provided for solar energy systems sold. However, for the solar energy systems under Customer Agreements, the Company does not accrue a warranty liability because those systems are owned by consolidated subsidiaries of the Company. Instead, any repair costs on those solar energy systems are expensed when they are incurred as a component of customer agreements and incentives costs of revenue. Commercial ITC Indemnification The Company is contractually committed to compensate its investors for any losses that they may suffer in certain limited circumstances resulting from reductions in Commercial ITCs, including any reduction in depreciable basis. Generally, such obligations would arise as a result of reductions to the value of the underlying solar energy systems as assessed by the Internal Revenue Service (the “IRS”). The Company set the purchase prices and claimed values based on fair market values determined with the assistance of an independent third-party appraisal with respect to the systems that generate Commercial ITCs (and the associated depreciable basis) that are passed-through to, and claimed by, the Fund investors. In April 2018, the Company purchased an insurance policy providing for certain payments by the insurers in the event there is a final determination (including a judicial determination) that reduced the Commercial ITCs and depreciation claimed in respect of solar energy systems sold or transferred to most Funds through April 2018, or later, in the case of Funds added to the policy after such date. In general, the policy indemnifies the Company and related parties for additional taxes (including penalties and interest) owed in respect of lost Commercial ITCs, depreciation, gross-up costs and expenses incurred in defending such claim, subject to negotiated exclusions from, and limitations to, coverage. The Company purchased similar additional insurance policies in January 2021, October 2022 and May 2023. At each balance sheet date, the Company assesses and recognizes, when applicable, the potential exposure from this obligation based on all the information available at that time, including any audits undertaken by the IRS. In 2018, the IRS opened an audit of one of the Company’s investors and reviewed the tax basis of the Company’s solar energy systems in the investment fund, which is covered by the Company’s 2018 insurance policy. In December 2024, this IRS audit resolved with no adverse findings involving the fair market value of the price paid by the investment fund for the Company’s solar energy systems. The Company incurred no out-of-pocket costs except the time, procedural, and administrative expenses associated with such a multi-year process. The Company does not expect increases in insurance premiums as a result of this audit. Litigation The Company is subject to certain legal proceedings, claims, investigations and administrative proceedings in the ordinary course of its business. The Company records a provision for a liability when it is both probable that the liability has been incurred and the amount of the liability can be reasonably estimated. The Company evaluates the adequacy of its legal reserves based on its assessment of many factors, including interpretations of the law and assumptions that ultimately may or may not be correct about the future outcome of each case based on available information. These provisions, if any, are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. Depending on the nature and timing of any such proceedings that may arise, an unfavorable resolution of a matter could materially affect the Company’s future consolidated results of operations, cash flows, or financial position in a particular period. In the normal course of business, the Company has from time to time been named as a party to various legal claims, actions, or complaints. While the outcome of these matters cannot currently be predicted with certainty, the Company does not currently believe that the outcome of any of these claims will have a material adverse effect, individually or in the aggregate, on its consolidated financial position, results of operations, or cash flows.

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