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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue


		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2024			2025			2024			2025
Product revenue:
Volume-related
Fuel sales⁽¹⁾		$	57,398		$	67,883		$	125,601		$	144,175
Change in fair value of derivative instruments⁽²⁾			61			(545)			1,683			(1,101)
RIN Credits			9,523			9,198			18,335			14,399
LCFS Credits			4,319			2,704			4,155			6,503
AFTC⁽³⁾			6,003			(11)			11,360			(28)
Total volume-related product revenue			77,304			79,229			161,134			163,948
Station construction sales			5,656			7,883			11,240			13,454
Total product revenue			82,960			87,112			172,374			177,402
Service revenue:
Volume-related, O&M services			14,422			14,852			28,157			27,642
Other services			572			649			1,132			1,333
Total service revenue			14,994			15,501			29,289			28,975
Total revenue		$	97,954		$	102,613		$	201,663		$	206,377

(1)

Includes non-cash stock-based sales incentive contra-revenue charges associated with the Amazon Warrant. For the three and six months ended June 30, 2024, contra-revenue charges recognized in fuel revenue were $14.1 million and $27.0 million, respectively. For the three and six months ended June 30, 2025, contra-revenue charges recognized in fuel revenue were $17.4 million and $34.7 million, respectively. See Note 14 for more information.

(2)

Represents changes in fair value of unsettled derivative instruments relating to the Company’s commodity swap and customer fueling contracts associated with the Company’s truck financing program. The amounts are classified as revenue because the Company’s commodity swap contracts are used to economically offset the risk associated with the diesel-to-natural gas price spread resulting from customer fueling contracts under the Company’s truck financing program. See Note 6 for more information about these derivative instruments.

(3)	Represents the federal alternative fuel excise tax credit (“AFTC”). AFTC was available for vehicle fuel sales made through December 31, 2024, at which time the program expired.

Schedule of contract balances

As of December 31, 2024 and June 30, 2025, the Company’s contract balances were as follows (in thousands):


		December 31,			June 30,
		2024			2025
Accounts receivable, net		$	107,683		$	82,861

Contract assets - current		$	2,987		$	4,512
Contract assets - non-current			1,945			1,747
Contract assets - total		$	4,932		$	6,259

Contract liabilities - current		$	6,870		$	8,836
Contract liabilities - non-current			76			38
Contract liabilities - total		$	6,946		$	8,874