WALTHAM, MA, Sept. 25, 2023 (GLOBE NEWSWIRE) -- via NewMediaWire – Tecogen Inc. (OTCQX:TGEN), a clean energy company providing ultra-efficient and clean on-site power, heating, and cooling equipment, is pleased to announce the appointment of Ms. Susan Hirsch to the Board of Directors. Ms. Hirsch was formerly Managing Director and Portfolio Manager for the TIAA Large Cap Growth Fund. Over the 15 years that she managed the fund, the assets under management grew to more than $20bn. She is presently on the board of Agenus, a publicly traded biotechnology company, ...