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Inventories
 9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following (in thousands):
September 30, 2025December 31, 2024
Raw materials$387,368 $357,870 
Work-in-process182,619 44,213 
Total$569,987 $402,083 
The 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 September 30, 2025 and December 31, 2024, there was $84.5 million and $349.5 million, respectively, related to the safe harbor program within raw materials.