TECOGEN INC.

Tecogen Inc. designs, manufactures, and services natural-gas-powered combined heat and power systems, industrial chillers, and refrigeration compressors. Its operations are divided into three business segments: Products, Services, and Energy Production. The Products segment produces cogeneration systems, air-conditioning chillers, and emissions control technologies. The Services segment delivers operations and maintenance solutions for installed machinery. Through the Energy Production segment, the company owns distributed generation energy equipment installed at customer sites and provides electricity, cooling, hot water, and heat under long-term agreements. Tecogen serves commercial, institutional, and industrial clients, including hospitals, educational institutions, multi-unit residential facilities, hotels, indoor agriculture operations, and food processing plants.

The company is headquartered in North Billerica, Massachusetts, having relocated its corporate offices and manufacturing operations from Waltham, Massachusetts. Tecogen maintains a network of eleven field service centers across California, Connecticut, Florida, Massachusetts, Michigan, New Jersey, New York, and Toronto, Canada. The company has shipped more than 3,200 units, primarily serving regions with elevated utility rates across the Northeast, the Midwest, and California.

Summary of the business section of Tecogen's latest annual report, written by StockData.

“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.

“As of December 31, 2025, we employed 119 full-time employees and 1 part-time employee, including 4 sales and marketing personnel, 83 service personnel, 24 manufacturing personnel and 9 finance and administrative personnel.”