Clean Energy Ventures is a global venture capital firm focused on early-stage climate technology companies that can curb greenhouse gas emissions at scale. Founded in 2017 by Daniel Goldman, Temple Fennell and David Miller, the firm’s leadership has collaborated in clean energy investing since 2005. With over $415 million under management through Fund I and the recently closed $305 million Fund II, Clean Energy Ventures supports founders who aim to reduce at least 2.5 gigatons of CO₂ by 2050.
The firm concentrates on Seed and Series A investments in disruptive energy technologies and business model innovations. Clean Energy Ventures often serves as the first institutional backer, taking active board roles, providing leadership coaching, assisting with patent strategy and supporting talent acquisition and marketing. A technically driven team—more than 60 percent of whom hold engineering or science backgrounds—performs rigorous due diligence and offers hands-on guidance through every stage of growth.
Clean Energy Ventures’ portfolio includes companies advancing clean technology and energy storage solutions. Nth Cycle develops electro-extraction methods for refining critical minerals and recycling lithium-ion batteries, while Noon Energy is building a carbon-oxygen battery for multi-day storage. Quidnet Energy works on grid-scale pumped hydro, and Ayrton Energy focuses on liquid organic hydrogen carriers for safe transport. LineVision enhances transmission capacity, ConnectDER simplifies residential solar and storage integration, and MacroCycle turns PET waste into valuable materials. Together, these investments demonstrate the firm’s commitment to scalable solutions in battery, storage and clean energy innovation.
