v3.25.4

Financial Instruments | 12 Months Ended
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Dec. 31, 2025
Cash and Cash Equivalents [Abstract] |
Financial Instruments | Financial Instruments Cash, Cash Equivalents, and Restricted Cash The carrying values of cash, cash equivalents, and restricted cash approximate fair values and were as follows (in thousands):
|  | December 31,
|  | 2025 |  | 2024
As Held: |  |  |  |
Cash |  | $ | 94,997 |  |  | $ | 201,613 |
Money market funds |  | 2,386,583 |  |  | 749,358 |
|  | $ | 2,481,580 |  |  | $ | 950,971 |
As Reported: |  |  |  |
Cash and cash equivalents |  | $ | 2,454,108 |  |  | $ | 802,851 |
Restricted cash |  | 27,472 |  |  | 148,120 |
|  | $ | 2,481,580 |  |  | $ | 950,971 |
Restricted cash consisted of the following (in thousands):
|  | December 31,
|  | 2025 |  | 2024
Restricted cash, current |  | $ | 1,973 |  |  | $ | 110,622 |
Restricted cash, non-current |  | 25,499 |  |  | 37,498 |
|  | $ | 27,472 |  |  | $ | 148,120 |
In December 2024, we issued a $100.0 million letter of credit in favor of one of our major customers to guarantee the performance in accordance with the limited indemnity and cooperation agreement dated November 14, 2024, related to the supply of 100 MW of Energy Server systems. This letter of credit was recorded in restricted cash, current on our consolidated balance sheets as of December 31, 2024, and was released in the first quarter of the fiscal year 2025. In the fourth quarter of fiscal year 2025, $6.7 million of restricted cash previously pledged under the PPA IIIb repowering arrangement was released to us. This release reduced the restricted cash balance established in 2019 to fund operations and maintenance obligations related to the Energy Server systems. Factoring Arrangements We sell certain customer trade receivables on a non-recourse basis under factoring arrangements with certain financial institutions. To date, these have primarily been trade receivables from SK ecoplant, a subsidiary of the SK Group, primarily resulting from extended payment terms. These transactions are accounted for as sales and cash proceeds are included in cash used in operating activities. We derecognized $184.2 million and $291.4 million of accounts receivable during the years ended December 31, 2024 and 2023, respectively. The cost of factoring such accounts receivable on our consolidated statements of operations for the years ended December 31, 2024 and 2023, was $4.0 million and $5.5 million, respectively. The cost of factoring is recorded in general and administrative expenses. There were no new factoring arrangements entered into during the year ended December 31, 2025.

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- Definition The entire disclosure of cash, cash equivalent, and short-term investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent + Details
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