Chiller Sale to Repeat Customer in Boise, Idaho

WALTHAM, MA -- (Marketwired) -- 08/10/17 -- 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 a150-ton Tecochill STx series chiller in Boise, ID. It will provide the cooling needs for the corporate headquarters of a regional utility company. Of note, the sale is a replacement of an existing similarly sized Tecogen chiller that had reached the end of its useful life.

"We've had a long relationship with this customer and appreciate their continued and ongoing interest in doing business with us," stated Vice President of Sales William Martini. "The existing chiller had been in place for almost 30 years. It was finally time for an upgrade to an updated and much more efficient machine, enabling the customer further operational savings beyond what the original equipment provided."

According to Tecogen Co-CEO Benjamin Locke, "Although this particular location is independently serviced, the fact that the prior unit operated successfully for nearly three decades is a testament to both the high quality of our products and the importance of proper maintenance. Our comprehensive service contracts can extend the life of our equipment almost indefinitely, which speaks volumes to both the diligence and professionalism of our service employees. They are integral to the company's success."

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.

Forward Looking Statements
This press release contains "forward-looking statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on our present intent, beliefs or expectations, and are not guaranteed to occur and may not occur. Therefore, you should not rely on any of these forward-looking statements. Actual results may differ materially from those contained in or implied by our forward-looking statements as a result of various factors such as economic conditions, significant product and service competition and other factors described in Item 1A "Risk Factors" in our most recent Form 10-K. Forward-looking statements can be identified by words such as: "anticipate," "will," "believe," "plan," "should," "continue," and similar references to future periods. Examples of forward-looking statements include, among others, statements we make regarding expected operation results such as revenue growth and earnings, strategies for business development and customer base growth.

Any forward-looking statement made in this press release is based only on information currently available to us and speaks only as of the date on which it is made. We undertake no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

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

Jeb Armstrong
P: (781) 466-6413
E: Jeb.Armstrong@tecogen.com

Source: Tecogen, Inc.

Released August 10, 2017