| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 8-K | 8-K | 10-K | 10-Q/A | 10-Q | 10-Q/A | 10-K | 10-Q/A |
| Revenue | | | | | | | | |
| Total revenue | 2.1 | 1.9 | 1.1 | 0.6 | 1.3 | 2.4 | 1.2 | 1.2 |
| Total revenue growth | 62.9% | -21.8% | -8.1% | -52.4% | 32.6% | 196.7% | -14.6% | -13.3% |
| Operating expenses | | | | | | | | |
| Cost of product and service revenue | | 1.5 | 0.7 | 0.3 | 1.0 | 2.1 | 1.1 | 0.4 |
| Selling, general, and administrative | 6.1 | 6.2 | 7.2 | 7.2 | 8.1 | 7.6 | 6.5 | 6.6 |
| Research and development | 2.4 | 2.1 | 2.0 | 1.7 | 2.2 | 2.1 | 1.9 | 1.6 |
| Total operating expenses | 10.4 | 8.3 | 19.8 | 18.4 | 22.7 | 11.9 | 19.2 | 8.6 |
| Operating loss | -8.3 | -7.9 | -8.7 | -8.6 | -10.0 | -9.5 | -8.4 | -7.4 |
| Operating margin | -392.2% | -424.8% | -762.1% | -1553.6% | -771.2% | -402.0% | -671.1% | -640.3% |
| |
| Other income (expense) | | | | | | | | |
| Interest income (expense) | 0.0 | | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Financing costs | | | | | | | -46.8 | -2.9 |
| Change in fair value of warrants liability | 0.1 | -0.2 | 11.1 | 1.9 | 0.3 | 4.8 | -0.9 | 3.7 |
| Change in fair value of derivative liability | 0.1 | -0.2 | 11.3 | 1.8 | 0.2 | 4.8 | -0.9 | 3.7 |
| Other, net | | | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | -0.1 |
| Total other income (expense), net | 0.1 | 0.4 | 55.0 | 1.9 | -43.3 | 4.8 | -47.7 | 0.7 |
| Loss before taxes | | | 46.2 | -6.7 | -53.4 | -4.7 | -56.1 | -6.7 |
| Income tax expense | | | | | | | | |
| Net loss | | | 46.2 | -6.7 | -53.4 | -4.7 | -56.1 | -6.7 |
| Less: Net loss attributable to non-controlling interests | | | 1.8 | -0.2 | -2.1 | -0.1 | -2.0 | -2.1 |
| Net loss attributable to Nuvve Holding Corp. | -8.0 | | 44.4 | -6.5 | -51.2 | -4.6 | -54.1 | -4.7 |
| Less: Preferred dividends on redeemable non-controlling interests | | | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 |
| Less: Accretion on redeemable non-controlling interests preferred shares | | | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 |
| Net loss attributable to Nuvve Holding Corp. common stockholders | -8.0 | -7.7 | 44.1 | -6.7 | -51.5 | -4.9 | -54.3 | -4.8 |
| |
| Net loss per share attributable to Nuvve Holding Corp. common stockholders, basic | | | $2.27 | ($0.31) | ($2.70) | ($0.26) | ($3.21) | ($0.26) |
| Net loss per share attributable to Nuvve Holding Corp. common stockholders, diluted | | | $2.27 | ($0.31) | ($2.70) | ($0.26) | ($3.21) | ($0.26) |
| |
| Weighted-average shares used in computing net loss per share attributable to Nuvve Holding Corp. common stockholders, basic | | | 21.0 | 22.0 | 19.1 | 18.9 | 16.7 | 18.6 |
| Weighted-average shares used in computing net loss per share attributable to Nuvve Holding Corp. common stockholders, diluted | | | 21.0 | 22.0 | 19.1 | 18.9 | 16.7 | 18.6 |