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Clean Energy Ventures
Clean Energy Ventures operates out of Boston and London as an early-stage climate technology venture firm.
Clean Energy Ventures
Clean Energy Ventures operates out of Boston and London as an early-stage climate technology venture firm. Its leadership began backing startups through the Clean Energy Venture Group angel network in 2005 and later formalized the fund, carrying over 15 years of shared investment history into the current platform. The firm concentrates on companies commercializing advanced energy technologies and business-model innovations, with a core filter that every portfolio company must demonstrate the potential for multi-gigaton-scale greenhouse gas emissions reduction within three decades. The partnership pursues asset-light, disruptive technologies across the energy transition, advanced materials, industrial decarbonization, mobility, carbon capture, and long-duration storage. Portfolio positions confirmed from the firm's public disclosures include Nth Cycle (critical-mineral refining), LineVision (grid-enhancing hardware), Noon Energy (multi-day carbon-oxygen batteries), OXCCU (sustainable aviation fuel in a single step), and Advanced Ionics (water-vapor electrolysis for green hydrogen). Many deals are co-syndicated alongside the Clean Energy Venture Group, the affiliated angel network of operators, engineers, and former executives who scout and diligence opportunities across North America and Europe. The firm maintains a network of 19 Venture Partners plus a Strategic Advisory Board chaired by former U.S. Secretary of Energy Ernest Moniz; other board members include Dr. Ellen Williams, former ARPA-E director and BP chief scientist. The team is composed primarily of physicists, engineers, and former founders who provide hands-on support spanning IP co-development, talent acquisition, and strategic marketing. Clean Energy Ventures recently expanded its European presence with a London office at 90 York Way and added a London-located Investor Relations Manager in Bridget Michalowski. Where a typical climatetech VC might optimize for financial return first, Clean Energy Ventures ties its posture to a single engineering metric — gigaton-scale abatement within three decades of investment. The firm shares deal flow with an adjacent angel group, the Clean Energy Venture Group, and often co-invests, creating a hybrid structure that blends institutional-scale diligence with angel-group speed at the seed stage. The strategic advisory board that includes the former U.S. Secretary of Energy is not ceremonial; it actively advises portfolio companies on technology roadmaps and emerging industrial trends.
General information
Firm type
Venture Capital
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Boston
Corporate office
50 Milk Street, Floor 16, Boston, MA 02110, United States
Additional offices
London, United Kingdom
Sector focus
Frequently asked questions
How does Clean Energy Ventures source its climate technology deal flow?
Deal flow comes through a shared sourcing and diligence network with the Clean Energy Venture Group, an affiliated angel network of former operators, engineers, and energy executives. The Group scouts seed-stage climatetech companies and often co-invests alongside the fund. This structure gives institutional limited partners early access to technologies that the operator network has already vetted commercially and technically.
What is the firm’s relationship with the Clean Energy Venture Group?
The Clean Energy Venture Group is a sister organization of angel investors with deep operating experience in the energy and environmental sectors. It provides seed capital and management expertise, and CEV and the Group support each other in sourcing, scouting, and diligencing deals. They frequently co-invest, effectively creating a continuum from angels to institutional venture capital.
Is there a minimum GHG reduction threshold for portfolio companies?
Yes, the firm publicly states that every startup it backs must demonstrate the potential to achieve multi-gigaton-scale greenhouse gas emissions reduction within three decades of investment. This quantifiable impact filter is applied during due diligence and is central to the firm's investment thesis.
Who advises on technology strategy at the fund?
A Strategic Advisory Board chaired by former U.S. Secretary of Energy Ernest Moniz advises on portfolio company strategy, emerging technologies, and industry trends. The board also includes Dr. Ellen Williams, former director of the DOE ARPA-E program and former chief scientist at BP, J. Michael McQuade, former CTO of United Technologies, and Girish Nadkarni, former president of TotalEnergies Ventures.
Does Clean Energy Ventures lead rounds or mainly co-invest?
The firm often acts as the first institutional venture capital backer for its startups. It has led or actively structured early-stage rounds for companies such as Noon Energy and LineVision, frequently syndicating with the Clean Energy Venture Group and other corporate and financial venture investors including Aramco Ventures, National Grid, and bp Ventures.
What is the firm’s geographic mandate?
Clean Energy Ventures invests across North America and Europe, with headquarters in Boston and a presence in London. Portfolio companies are based in both regions, and the firm has supported European startups such as OXCCU, a UK-based company making sustainable aviation fuel from CO2 and water in a single step.
What type of operational support does the firm provide beyond capital?
The team, composed largely of trained physicists, engineers, and former founders, provides hands-on assistance with IP co-development, talent acquisition, strategic marketing, and active board participation. A network of 19 Venture Partners with deep technical and operating backgrounds assesses, builds, and mentors management teams at portfolio companies.
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