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Accounting policies (Tables) | 9 Months Ended
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Sep. 30, 2024
Accounting policies |
Schedule of Disaggregation of revenue | The following table presents the Company’s revenue disaggregated by revenue source. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, |  | Nine Months Ended September 30,
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023
Retail revenue | ​ | $ | 7,585,992 | ​ | $ | 7,216,574 | ​ | $ | 24,392,814 | ​ | $ | 22,560,998
Bulk revenue | ​ |  | 8,767,168 | ​ |  | 8,488,615 | ​ |  | 25,557,220 | ​ |  | 25,975,483
Services revenue | ​ |  | 12,677,837 | ​ |  | 29,427,664 | ​ |  | 42,017,917 | ​ |  | 66,243,328
Manufacturing revenue | ​ |  | 4,359,560 | ​ |  | 4,721,222 | ​ |  | 13,591,154 | ​ |  | 12,180,519
Total revenue | ​ | $ | 33,390,557 | ​ | $ | 49,854,075 | ​ | $ | 105,559,105 | ​ | $ | 126,960,328
​ Services revenue consists of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, |  | Nine Months Ended September 30,
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023
Construction revenue | ​ | $ | 3,637,038 | ​ | $ | 24,204,446 | ​ | $ | 16,165,312 | ​ | $ | 52,563,822
Operations and maintenance revenue | ​ |  | 7,492,121 | ​ |  | 5,021,081 | ​ |  | 21,660,396 | ​ |  | 12,750,902
Design and consulting revenue | ​ |  | 1,548,678 | ​ |  | 202,137 | ​ |  | 4,192,209 | ​ |  | 928,604
Total services revenue | ​ | $ | 12,677,837 | ​ | $ | 29,427,664 | ​ | $ | 42,017,917 | ​ | $ | 66,243,328
​
Summary of revenue recognized and amounts billed on contracts in progress | Revenue recognized and amounts billed on contracts in progress are summarized as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, | ​
​ | ​ | 2024 | ​ | 2023 | ​
Revenue recognized to date on contracts in progress |  | $ | 121,305,155 | ​ | $ | 108,952,682 | ​
Amounts billed to date on contracts in progress | ​ |  | (127,710,070) | ​ |  | (101,724,459) | ​
Retainage | ​ | ​ | 2,344,556 | ​ | ​ | 8,087,823 | ​
Net contract asset /(liability) | ​ | $ | (4,060,359) | ​ | $ | 15,316,046 | ​
Summary of net balances of billings reflected in the accompanying consolidated balance sheet | The above net balances are reflected in the accompanying condensed consolidated balance sheets as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, | ​
​ | ​ | 2024 | ​ | 2023 | ​
Contract assets |  | $ | 1,958,361 |  | $ | 21,553,057 | ​
Contract liabilities | ​ |  | (6,018,720) | ​ |  | (6,237,011) | ​
Net contract asset /(liability) | ​ | $ | (4,060,359) | ​ | $ | 15,316,046 | ​

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- Definition The tabular disclosure of revenue recognized and amounts billed on services segment and manufacturing segment contracts in progress. + References No definition available. + Details
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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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