v3.24.0.1
Revenue (Tables)
12 Months Ended
Dec. 31, 2023
Revenue  
Schedule of disaggregation of revenue

The following table provides information about disaggregation of revenue (in thousands):

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Major products/services lines

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Year ended December 31,

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​

2023

​

2022

​

2021

Sales of fuel cell systems

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$

181,168

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$

207,691

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$

225,229

Sales of hydrogen infrastructure

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​

183,606

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​

141,528

​

​

135,055

Sales of electrolyzers

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​

82,611

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​

28,463

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​

16,667

Sales of engineered equipment

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​

32,361

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​

93,489

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​

7,571

Services performed on fuel cell systems and related infrastructure

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​

39,093

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​

35,280

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​

26,706

Power purchase agreements

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​

63,731

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​

47,183

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​

35,153

Fuel delivered to customers and related equipment

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​

66,246

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​

57,196

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​

46,917

Sales of cryogenic equipment and other

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​

231,687

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​

87,761

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​

8,255

Other

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​

10,837

​

​

2,849

​

​

789

Net revenue

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$

891,340

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$

701,440

​

$

502,342

Schedule of receivables, contract assets and contract liabilities from contracts with customers

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers (in thousands):

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December 31,

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December 31,

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2023

​

2022

Accounts receivable

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$

243,811

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$

129,450

Contract assets

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​

155,989

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​

104,287

Deferred revenue and contract liabilities

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​

288,302

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​

229,898

Schedule of changes in contract assets and the contract liabilities

Significant changes in the contract assets and the contract liabilities balances during the period are as follows (in thousands):

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Contract assets

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December 31, 2023

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December 31, 2022

Transferred to receivables from contract assets recognized at the beginning of the period

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$

(94,860)

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$

(33,394)

Change in contract assets related to warrants

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​

14,260

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​

26,455

Impairment

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​

(2,375)

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​

—

Revenue recognized and not billed as of the end of the period

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​

134,677

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​

72,469

Net change in contract assets

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$

51,702

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$

65,530

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​

​

​

​

​

​

​

Deferred revenue and contract liabilities

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​

​

​

December 31, 2023

​

December 31, 2022

Increases due to customer billings, net of amounts recognized as revenue during the period

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$

151,965

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$

200,347

Change in contract liabilities related to warrants

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​

440

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​

—

Contract liabilities assumed as part of acquisitions

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​

—

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​

10,011

Revenue recognized that was included in the contract liability balance as of the beginning of the period

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​

(94,001)

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​

(163,550)

Net change in deferred revenue and contract liabilities

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$

58,404

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$

46,808

Schedule of Estimated future revenue

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period, including provision for common stock warrants (in thousands):

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December 31,

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Expected recognition

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​

2023

​

period (years)

Sales of fuel cell systems

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$

64,954

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​

1 - 2

Sales of hydrogen installations and other infrastructure

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​

22,860

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​

1

Sales of electrolyzers

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​

301,323

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​

1 - 2

Sales of engineered equipment

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​

19,876

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​

1

Services performed on fuel cell systems and related infrastructure

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​

123,080

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​

5 - 10

Power purchase agreements

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​

435,967

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​

5 - 10

Fuel delivered to customers and related equipment

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​

95,444

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​

5 - 10

Sales of cryogenic equipment and other

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​

87,927

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​

1

Total estimated future revenue

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$

1,151,431

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​

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​