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Inventories
 3 Months Ended
Mar. 31, 2026
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following (in thousands):
March 31, 2026December 31, 2025
Raw materials$431,475 $456,924 
Work-in-process58,915 44,362 
Total$490,390 $501,286 
The Internal Revenue Service ("IRS") provided taxpayers a safe harbor opportunity for solar facilities that began construction prior to January 1, 2025 and are placed in service on or after January 1, 2025 to elect the application of the ITC (as defined below) under Section 48(a) of the Internal Revenue Code of 1986 (the "Code"). The Company has sought to avail itself of the safe harbor in order to retain the ability to elect the application of the ITC under Section 48(a) of the Code by incurring certain costs and taking title to equipment in 2024. As of March 31, 2026 and December 31, 2025, there was $68.2 million and $85.3 million, respectively, related to the safe harbor program within raw materials.