Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Contract with Customer, Asset and Liability

The following table provides information about accounts receivables, contract assets, customer deposits and deferred revenue from contracts with customers (in thousands):

	March 31,		December 31,
	2026		2025
Accounts receivable	$	359,406	$	371,796
Contract assets	305,876		241,186
Customer deposits	151,100		78,207
Deferred revenue	82,254		65,608

	Three Months Ended
	March 31,
	2026		2025
Beginning balance	$	241,186	$	145,162
Transferred to accounts receivable from contract assets recognized at the beginning of the period	(43,086)		(56,806)
Revenue recognized and not billed as of the end of the period	107,776		55,263
Ending balance	$	305,876	$	143,619

Deferred revenue activity during the three months ended March 31, 2026 and 2025, consisted of the following (in thousands):

	Three Months Ended
	March 31,
	2026		2025
Beginning balance	$	65,608	$	66,304
Additions	628,001		209,886
Revenue recognized	(611,355)		(217,182)
Ending balance	$	82,254	$	59,008

Schedule of Disaggregation of Revenue

We disaggregate revenue from contracts with customers into four revenue categories: product, installation, service and electricity (in thousands):

	Three Months Ended
	March 31,
	2026		2025
Revenue from contracts with customers:
Product revenue	$	653,348	$	211,869
Installation revenue	25,931		33,651
Service revenue	61,879		53,548
Electricity revenue	5,243		20,194
Total revenue from contract with customers	746,401		319,262
Revenue from contracts that contain leases:
Electricity revenue	4,653		6,759
Total revenue	$	751,054	$	326,021

Schedule of Weighted-Average Valuation Assumptions

We used the following weighted-average assumptions for determination of the Warrant fair value:

	March 31,	December 31,
	2026	2025
Risk-free interest rate	3.8%	3.6%
Expected term (years)	0.5	0.5
Expected dividend yield	—	—
Expected volatility	114.5%	96.2%

We used the following weighted-average assumptions in applying the Black-Scholes valuation model for determination of the stock options valuation:

	Three Months Ended March 31,
	2025
Risk-free interest rate	4.1%
Expected term (years)	6.1
Expected dividend yield	—
Expected volatility	93.4%

We used the following weighted-average assumptions in applying the Black-Scholes valuation model for determination of the 2018 ESPP share valuation:

	Three Months Ended
	March 31,
	2026	2025
Risk-free interest rate	3.4% - 4.1%	4.1% - 5.0%
Expected term (years)	0.5 - 2.0	0.5 - 2.0
Expected dividend yield	—	—
Expected volatility	80.5%—110.4%	66.2%—115.2%