Temple Fennell

Temple Fennell is the Co-Founder and Managing Partner at Clean Energy Ventures and a Principal at his family office, Keller Enterprises. Over a 25-year career, he has founded three companies backed by institutional investors such as New Enterprise Associates and Oak Investment Partners, and previously served as a strategic advisor at Flagship Ventures after beginning his career at KPMG. He holds a Bachelor of Science in Systems Engineering from the University of Virginia and an MBA from MIT Sloan, and has directed investments into more than 40 climate tech startups since 2005. In addition to his executive roles, he currently holds board seats at portfolio companies including Rebound Technologies, Aqua Membranes, and SunDensity. His investment focus centers on early-stage climate technologies, renewable energy, and sustainable agriculture, while advancing impact investing strategies for next-generation family offices.