Tecogen Corrects Error in Issuing Duplicate Press Release Today

WALTHAM, MA -- (Marketwired) -- 06/20/17 -- TecogenĀ® Inc. (NASDAQ: TGEN) reports that the company mistakenly reissued the press release this morning entitled, "Tecogen Receives Order for Two TECOCHILL Water Chillers for Cannabis Growing Facility." This press release is a duplicate of the press release issued on June 15, 2017. The company regrets the error.

About Tecogen
TecogenĀ® 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 Assenevermssment.

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

Forward Looking Statements
This press release may contain forward-looking statements under the Private Securities Litigation Reform Act of 1995 that involve a number of risks and uncertainties. Important factors could cause actual results to differ materially from those indicated by such forward-looking statements, as disclosed on the Company's website and in Securities and Exchange Commission filings. The statements in this press release are made as of the date of this press release, even if subsequently made available by the Company on its website or otherwise. The Company does not assume any obligation to update the forward-looking statements provided to reflect events that occur or circumstances that exist after the date on which they were made.

Tecogen Media & Investor Relations Contact Information:
John N. Hatsopoulos
P: (781) 622-1120
E: John.Hatsopoulos@tecogen.com

Source: Tecogen, Inc.