Cannabis Order Book Grows Higher WALTHAM, MA--(Ma

WALTHAM, MA --(Marketwired - September 20, 2017) - Tecogen® Inc. ( NASDAQ : TGEN ), a clean energy company providing ultra-efficient, clean, natural gas powered on-site power, heating and cooling equipment, is pleased to announce the sale of two 200-ton Tecochill STx Series chillers to an indoor cannabis grow facility located in the greater Boston area. The buyer will recover the pure CO2 emissions stream, which will be scrubbed of harmful NOX and CO by the company's patented Ultera emissions technology, for use in the facility to aid in plant growth. The sale is Tecogen's seventh into North America's nascent indoor cannabis industry. To-date this year, the company has now won orders for twenty Tecochill units, which includes non-grower buyers and is almost double the full-year 2016 total.

Commenting on the sale, Stephen Lafaille, Product Manager for Tecogen, said, "Both our Tecochill line of water-cooled chillers and the Ilios line of high efficiency heat pump water heaters have seen tremendous growth in the last two years. Since the launch of each product line, we have sold over 500 chillers and 40 water heaters."

Mr. Lafaille continued, "Customers and utilities are seeing the benefits of what we refer to as 'mechanical CHP' (CHP: combined heat and power). These products provide cold and hot water at the same time and use a fraction of the electrical power of competing products. The benefits are three-fold: avoided electrical consumption for cooling, lower operating costs than competing products, and free hot water for dehumidification, domestic hot water or process loads. Particularly as it pertains to the indoor growing industry, electric utilities look with increasing favor upon Tecogen's products and are providing rebates accordingly, as our equipment avoids expensive distribution system upgrades to an already saturated electrical grid."

Benjamin Locke, Tecogen's Co-CEO, stated, "Our penetration into the indoor grow market continues apace. The ability to deliver 'mechanical CHP,' as Stephen mentioned, greatly expands our addressable market beyond our core CHP base. We believe that with our sales so far to indoor growing, we've just begun to scratch the surface of the market potential of our chillers and heaters both generally speaking and specifically with respect to indoor farming."

About Tecogen Tecogen® Inc. designs, manufactures, sells, installs, and maintains high efficiency, ultra-clean, cogeneration products including natural gas engine-driven combined heat and power, air conditioning systems, and high-efficiency water heaters for residential, commercial, recreational and industrial use. The company is known for cost efficient, environmentally friendly and reliable products for energy production that, through patented technology, nearly eliminate criteria pollutants and significantly reduce a customer's carbon footprint.

In business for over 30 years, Tecogen has shipped more than 2,500 units, supported by an established network of engineering, sales, and service personnel across the United States. For more information, please visit www.tecogen.com or contact us for a free Site Assessment .

Tecogen, InVerde, Ilios, Tecochill, Ultera, and e ⁺ , are registered trademarks or trademark pending registration of Tecogen Inc.

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