Tecogen Inc.
Tecogen Inc. (NYSE: TGEN) produces natural-gas-fueled combined heat and power systems, chillers, refrigeration compressors and emissions-control technology for commercial and industrial customers, including hospitals, schools, hotels, food processors, data centers and residential buildings. Its products generate… From the company’s description.
Over the twelve months to Jun 30, 2026, Tecogen Inc. reported revenue of $24.58M, down 6.5% from a year earlier, and a net loss of $10.38M. Its operating margin was −42.8%, and operations used $11.60M in cash. In fiscal 2025, it reported revenue of $27.07M, up 19.7% from fiscal 2024, and a net loss of $8.25M.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Tecogen Inc. does
In the company’s own words
Tecogen Inc. (NYSE: TGEN) produces natural-gas-fueled combined heat and power systems, chillers, refrigeration compressors and emissions-control technology for commercial and industrial customers, including hospitals, schools, hotels, food processors, data centers and residential buildings. Its products generate electricity or provide cooling while recovering engine heat for use at customer facilities. Tecogen operates three segments: Products designs, manufactures and sells cogeneration and chiller systems; Services provides maintenance, parts and installation, primarily under long-term service contracts; and Energy Production owns and operates on-site systems and sells electricity, heat, hot water and cooling under long-term agreements. Energy Production represented 4.9% of consolidated revenue in 2025. Product brands include InVerde, TecoPower, Tecochill, Tecofrost and Ultera. At year-end 2025, the Services segment maintained approximately 244 chillers and 764 cogeneration units, while Energy Production operated 14 systems. Tecogen has shipped more than 3,200 units. Its website is www.tecogen.com.
Company details
- Sector
- Industrials
- Industry (SIC)
- Industrial Machinery
- Headquarters
- NORTH BILLERICA, MA
- Fiscal year end
- December
- CIK
- 1537435
- SIC
- 3585
Financial performance, year by year
Fiscal 2012–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Tecogen Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · Tecogen Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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