Revenue (Tables)
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12 Months Ended |
Dec. 31, 2018 |
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| Revenue |
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| Schedule of disaggregation of revenue |
In the following table, revenue is disaggregated by major product line and timing of revenue recognition, net of the provision for common stock warrants, where applicable (in thousands):
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Major products/services lines
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Year ended December 31,
|
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2018
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2017
|
|
2016
|
|
Sales of fuel cell systems
|
|
$
|
75,146
|
|
$
|
49,179
|
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$
|
30,008
|
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Sale of hydrogen installations and other infrastructure
|
|
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32,146
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|
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13,452
|
|
|
9,977
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Services performed on fuel cell systems and related infrastructure
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|
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22,002
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16,202
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|
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17,347
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Power Purchase Agreements
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|
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22,869
|
|
|
12,869
|
|
|
13,687
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Fuel delivered to customers
|
|
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22,469
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|
8,167
|
|
|
10,916
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Other
|
|
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—
|
|
|
284
|
|
|
884
|
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Net revenue
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$
|
174,632
|
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$
|
100,153
|
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$
|
82,819
|
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| 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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2018
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2017
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Accounts receivable
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$
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37,347
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$
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24,179
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Contract assets
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|
|
788
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|
1,141
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Contract liabilities
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|
|
40,476
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|
|
35,171
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| 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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Year ended
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|
|
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December 31, 2018
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Amortization of contract assets recognized at the beginning of the period
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$
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(353)
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Revenue recognized and not billed as of the end of the period
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|
|
—
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Net change in contract assets
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$
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(353)
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Contract liabilities
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Year ended
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December 31, 2018
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Revenue recognized that was included in the contract liability balance as of the beginning of the period
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|
$
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(10,783)
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Increases due to cash received, net of amounts recognized as revenue during the period
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|
|
16,088
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Net change in contract liabilities
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|
$
|
5,305
|
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| Schedule of Estimated future revenue |
The following table includes estimated revenue expected to be recognized in the future (sales of fuel cell systems and hydrogen installations are expected to be recognized as revenue within one year; sales of services and PPAs are expected to be recognized as revenue over five to seven years) related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period, excluding provision for common stock warrants as it is not readily estimable as it depends on the valuation of the common stock warrants when revenue is recognized (in thousands):
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Year ended December 31,
|
|
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2018
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|
2017
|
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Sales of fuel cell systems
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|
$
|
17,318
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$
|
26,298
|
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Sale of hydrogen installations and other infrastructure
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|
|
9,141
|
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|
15,512
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Services performed on fuel cell systems and related infrastructure
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|
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73,381
|
|
|
77,453
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Power Purchase Agreements
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|
|
111,533
|
|
|
130,042
|
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Total estimated future revenue
|
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$
|
211,373
|
|
$
|
249,305
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