Clean Energy Ventures is an early-stage climate technology venture firm investing at seed and Series A in companies where, in the firm's words, "the science is proven, the path to commercialization is clear, and the potential for climate impact is measured in gigatons." It focuses on hard technology and advanced materials, thermal solutions, energy storage and distributed generation, carbon capture and recycling, and industrial decarbonization. The firm screens every prospective investment with its own Simple Emissions Reduction Calculator (SERC) methodology and targets mitigating 75 gigatons of emissions by 2050. It takes active board seats and works on IP, commercial strategy and leadership coaching rather than investing passively.
$415M (across two funds; Fund II $305M, closed 2024) AUM67/100 Power Score™2017 FoundedBoston, Massachusetts
David S. Miller becomes Executive Managing Director of Clean Energy Venture Group, the angel investing cohort that preceded the firm (he served through 2017).
2017
Clean Energy Ventures formalized as an institutional venture fund by Dan Goldman, David S. Miller and Temple Fennell.
2024
Closes oversubscribed $305M Fund II (announced May 29, 2024) and opens a London office; Fund I was $110M.
2025
Portfolio company SparkMeter's data platform and software technologies acquired by Honeywell (announced August 2025).