Condensed Consolidated Statements of Operations - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Total revenues | $ 7,183,121 | $ 5,630,130 | $ 21,755,712 | $ 16,544,014 |
| Total cost of sales | 4,999,555 | 3,149,216 | 13,888,613 | 9,408,288 |
| Gross profit | 2,183,566 | 2,480,914 | 7,867,099 | 7,135,726 |
| Operating expenses: | ||||
| General and administrative | 3,411,762 | 2,681,558 | 9,431,073 | 8,428,119 |
| Selling | 572,869 | 442,812 | 1,682,085 | 1,377,758 |
| Research and development | 297,926 | 233,809 | 859,318 | 734,994 |
| (Gain) loss on disposition of assets | 1,713 | (4,042) | 1,433 | (8,070) |
| Total operating expenses | 4,284,270 | 3,354,137 | 11,973,909 | 10,532,801 |
| Loss from operations | (2,100,704) | (873,223) | (4,106,810) | (3,397,075) |
| Other income (expense), net | ||||
| Other income (expense), net | 81,925 | (18,453) | 61,302 | (15,305) |
| Interest expense | (41,113) | (23,003) | (111,592) | (59,542) |
| Unrealized gain (loss) on investment securities | (56,246) | 18,749 | (74,995) | 0 |
| Total other income (expense), net | (15,434) | (22,707) | (125,285) | (74,847) |
| Loss before provision for state income taxes | (2,116,138) | (895,930) | (4,232,095) | (3,471,922) |
| Provision for state income taxes | 2,928 | 0 | 20,615 | 22,100 |
| Consolidated net loss | (2,119,066) | (895,930) | (4,252,710) | (3,494,022) |
| (Income) loss attributable to the non-controlling interest | (11,881) | (34,478) | (2,264) | (80,149) |
| Loss attributable to Tecogen Inc. | $ (2,130,947) | $ (930,408) | $ (4,254,974) | $ (3,574,171) |
| Earnings Per Share [Abstract] | ||||
| Net loss per share - basic (in USD per share) | $ (0.07) | $ (0.04) | $ (0.16) | $ (0.14) |
| Weighted average shares outstanding - basic (in shares) | 28,817,040 | 24,850,261 | 26,354,875 | 24,850,261 |
| Net loss per share - diluted (in usd per share) | $ (0.07) | $ (0.04) | $ (0.16) | $ (0.14) |
| Weighted average shares outstanding - diluted (in shares) | 28,817,040 | 24,850,261 | 26,354,875 | 24,850,261 |
| Products | ||||
| Total revenues | $ 2,983,795 | $ 1,391,016 | $ 8,672,927 | $ 3,002,087 |
| Total cost of sales | 1,885,377 | 797,209 | 5,605,282 | 2,018,734 |
| Services | ||||
| Total revenues | 3,943,510 | 3,850,551 | 12,153,700 | 11,991,378 |
| Total cost of sales | 2,946,438 | 2,139,042 | 7,675,073 | 6,423,114 |
| Energy Service [Member] | ||||
| Total revenues | 255,816 | 388,563 | 929,085 | 1,550,549 |
| Total cost of sales | $ 167,740 | $ 212,965 | $ 608,258 | $ 966,440 |
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Expenses recognized in the period that are directly related to the selling and distribution of products or services. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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