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Top 50 Clean Energy Startup Investors in United States (October 2026)

The most active venture capital funds and angel investors investing in United States Clean Energy startups. This investor list is updated monthly from the Shizune investor database, ranked by number of investments in United States Clean Energy startup companies. Find investors to raise a Seed, Series A or Series B round with Shizune.
Investor Relevant Deals Geography Stage Focus Round Size
Breakthrough Energy Ventures
VC Fund
12 United States, Canada, United Kingdom Series A, Series B, Seed Energy, Renewable Energy, Manufacturing $2M–$193M
Alumni Ventures
VC Fund
11 United States, United Kingdom, Canada Seed, Series A, Series B Software, Artificial Intelligence, Health Care $850k–$75M
Third Sphere
VC Fund
10 United States, United Kingdom, Israel Seed, Pre-Seed, Convertible Note Software, Energy, Real Estate $100k–$7.5M
Clean Energy Venture Group
VC Fund
10 United States, Canada Seed, Series A, Convertible Note Energy, Renewable Energy, Manufacturing $630k–$11M
Lowercarbon Capital
VC Fund
10 United States, United Kingdom, France Series A, Seed, Series B Renewable Energy, Energy, Manufacturing $3M–$150M
Khosla Ventures
VC Fund
9 United States, United Kingdom, India Series A, Seed, Series B Artificial Intelligence, Software, Health Care $1.8M–$100M
Everywhere Ventures
VC Fund
9 United States, United Kingdom, Australia Seed, Pre-Seed, Series A Software, Health Care, Artificial Intelligence $250k–$20M
Energy Impact Partners
VC Fund
9 United States, Canada, United Kingdom Series A, Series B, Series C Software, Energy, Renewable Energy $8.8M–$111M
Collaborative Fund
VC Fund
8 United States, United Kingdom, South Korea Seed, Series A, Series B Software, Food and Beverage, Artificial Intelligence $1.2M–$75M
Wonder Ventures
VC Fund
7 United States Seed, Pre-Seed, Series A Software, Internet, Health Care $620k–$46M
Powerhouse Ventures
VC Fund
7 United States, India, Canada Seed, Series A, Pre-Seed Software, Energy, Solar $1.1M–$30M
Massachusetts Clean Energy Center
VC Fund
6 United States, United Kingdom, Italy Grant, Seed, Series A Energy, Renewable Energy, Manufacturing $50k–$10M
Safar Partners
VC Fund
6 United States, China, Italy Seed, Series A, Series B Biotechnology, Health Care, Information Technology $1.5M–$863M
Good Growth Capital
VC Fund
6 United States, France, Israel Seed, Series A, Convertible Note Health Care, Biotechnology, Software $25k–$24M
Prelude Ventures
VC Fund
6 United States, Canada Series A, Series B, Seed Software, Energy, Renewable Energy $2.5M–$101M
Jericho Energy Ventures
VC Fund
6 United States Series A, Corporate Round Energy, CleanTech, GreenTech $3M–$11M
AP Ventures
VC Fund
6 United States, France, Norway Series A, Seed, Series B Energy, Renewable Energy, Manufacturing $3.1M–$139M
The Engine
VC Fund
5 United States Seed, Series A, Series B Biotechnology, Health Care, Software $2M–$150M
Clean Energy Ventures
VC Fund
5 United States, Canada, Israel Seed, Series A, Series B Manufacturing, Energy, Renewable Energy $1.5M–$33M
Shell Ventures
VC Fund
5 United States, United Kingdom, India Series A, Series B, Venture - Series Unknown Energy, Renewable Energy, Software $2.8M–$126M
Overture Ventures
VC Fund
5 United States, Canada Seed, Series A, Series B Energy, Renewable Energy, Manufacturing $2M–$150M
BoxGroup
VC Fund
5 United States, United Kingdom, Canada Seed, Series A, Series B Software, Artificial Intelligence, Information Technology $1.6M–$90M
Crosscut Ventures
VC Fund
5 United States, Colombia Seed, Series A, Pre-Seed Software, Information Technology, Internet $1M–$25M
Anzu Partners
VC Fund
5 United States, Canada, Spain Series A, Series B, Venture - Series Unknown Software, Biotechnology, Manufacturing $5M–$44M
Climate Pledge Fund
VC Fund
5 United States, Canada, India Series A, Series B, Seed Energy, CleanTech, Manufacturing $2M–$246M
Tamarack Global
VC Fund
5 United States, Denmark, United Kingdom Seed, Series A, Series B Artificial Intelligence, Information Technology, Internet $1.8M–$700M
Foothill Ventures
VC Fund
5 United States, China, Canada Seed, Series A Artificial Intelligence, Software, Biotechnology $1.5M–$35M
Bolt
VC Fund
5 United States, Canada Seed, Pre-Seed, Series A Software, Health Care, Hardware $130k–$15M
Congruent Ventures
VC Fund
4 United States, Canada, United Kingdom Seed, Series A, Series B Software, Energy, Sustainability $2.1M–$90M
Network.VC
VC Fund
4 United States, Israel, Ukraine Seed, Pre-Seed, Series A Software, Artificial Intelligence, Information Technology $350k–$22M
Braemar Energy Ventures
VC Fund
4 United States, Canada, France Series B, Series C, Series A Energy, Manufacturing, Renewable Energy $1.2M–$45M
SYSTEMIQ
VC Fund
4 United States, United Kingdom Series A, Series B, Seed Artificial Intelligence, Energy, Software $412k–$34M
Hess Corporation
VC Fund
4 United States Series A Energy, CleanTech, GreenTech $3M–$11M
Summa Equity
VC Fund
4 Norway, United States, Sweden Venture - Series Unknown, Series C, Private Equity Energy, Software, Information Technology $1.5M–$150M
New York Ventures
VC Fund
4 United States, Canada, Israel Seed, Series A, Series B Health Care, Biotechnology, Software $1M–$53M
Austin Ventures
VC Fund
4 United States, China, Japan Series B, Series A, Series C Software, Enterprise Software, Internet $1.6M–$30M
Backstage Capital
VC Fund
4 United States, United Kingdom, Trinidad and Tobago Seed, Pre-Seed, Series A Software, Health Care, Internet $100k–$20M
Horizons Ventures
VC Fund
4 United States, United Kingdom, Canada Series A, Series B, Seed Artificial Intelligence, Software, Biotechnology $1M–$110M
DCVC
VC Fund
4 United States, Canada, United Kingdom Seed, Series A, Series B Software, Artificial Intelligence, Machine Learning $1M–$130M
Starlight Ventures
VC Fund
4 United States, Finland, Italy Seed, Series A, Convertible Note Biotechnology, Energy, Health Care $110k–$100M
Countdown Capital
VC Fund
4 United States Seed, Pre-Seed Aerospace, Artificial Intelligence, Manufacturing $1.5M–$12M
Climate Capital
VC Fund
4 United States, Germany, Canada Seed, Pre-Seed, Series A Energy, Manufacturing, Renewable Energy $800k–$31M
Chrysalix Venture Capital
VC Fund
4 United States, Canada, The Netherlands Series B, Series A Energy, Manufacturing, CleanTech $2M–$24M
Asymmetry Ventures
VC Fund
4 United States, India, Canada Seed, Pre-Seed, Series A Software, Health Care, Biotechnology $125k–$21M
NY Green Bank
VC Fund
4 United States, Canada Debt Financing, Post-IPO Debt Energy, Renewable Energy, Clean Energy $1.1M–$275M
Keiretsu Capital
VC Fund
4 United States, Canada, India Series A, Convertible Note, Seed Health Care, Biotechnology, Software $50k–$12M
Blue Bear Capital
VC Fund
4 United States, Germany, The Netherlands Series A, Seed, Series B Software, Artificial Intelligence, Information Technology $1.5M–$34M
Acequia Capital (AceCap)
VC Fund
4 United States, United Kingdom, France Seed, Series A, Pre-Seed Software, Artificial Intelligence, Information Technology $500k–$25M
Nabors
VC Fund
3 United States, Australia, Slovakia (Slovak Republic) Series A, Corporate Round, Venture - Series Unknown Energy, Renewable Energy, Solar $7M–$58M
Threshold
VC Fund
3 United States, India, Canada Series B, Series A, Series C Software, Internet, Mobile $2.3M–$81M
Access all 1855 investors in United States Clean Energy startups.

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822 industries, 177 countries. Updated daily. Emails and phones included.

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Investor list

Breakthrough Energy Ventures
VC Fund · Paris, Ile-de-France, France · 12 investments in United States Clean Energy startups, 14 in the past 12 months

Empowering innovators to build the future of energy

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Investment focus

  • Industry: Energy, Renewable Energy, Manufacturing
  • Stage:Series A, Series B, Seed
  • Geography: United States, Canada, United Kingdom

Investor stats

  • Total investments: 288
  • Round size: Seed $2M–$19M; Series A $11M–$55M; Series B $20M–$193M
  • Lead/follow: 47% lead, 53% follow
  • Last fund: Likely actively investing — fresh fund, raised $145M in 2025

Portfolio highlights

  • Arkea Bio — ArkeaBio is using innovative vaccine technologies to create solutions to reduce the on-farm methane emissions responsible for 6% of global GHG emissions.
  • Planted — Plan. Build. Repeat. High-density racking, solar design software, and robotic construction to help turn more solar sites into good sites and build clean energy resources faster.
  • Physical Superintelligence — Physical Superintelligence develops physical superintelligence systems that use AI-driven research to study physics, engineer physical systems, and explore new physical laws. Its approach combines human scientists with virtual physicists that conduct autonomous research campaigns covering hypothesis development, verification, experimentation,engineering, and deployment. The company focuses initially on the physical infrastructure underlying AI, including energy, materials, computation, sensing, and manufacturing.
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Alumni Ventures
VC Fund · Manchester, New Hampshire, United States · 11 investments in United States Clean Energy startups

Access curated startup investment opportunities and diversified venture capital exposure designed for accredited investors.

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Investment focus

  • Industry: Software, Artificial Intelligence, Health Care
  • Stage:Seed, Series A, Series B
  • Geography: United States, United Kingdom, Canada

Investor stats

  • Total investments: 2705
  • Round size: Seed $850k–$9.9M; Series A $3.5M–$32M; Series B $8M–$75M
  • Lead/follow: 4% lead, 96% follow
  • Last fund: Likely actively investing — fresh fund, raised $90k in 2026

Portfolio highlights

  • Particle — Afternic is a one-stop site to buy, sell and park domains. See for your self why Afternic is the world's premiere domain marketplace and exchange reseller.
  • Akiba Digital — Akiba Digital is a data and technology company that provides financial intelligence solutions. Our vision is to to unlock financial opportunities for consumers, businesses and society using alternative data.
  • Enact — Enact is a leading solar energy and solar software company serving homeowners, businesses, and installers. Get a free quote or request a demo today!
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Third Sphere
VC Fund · Brooklyn, New York, United States · 10 investments in United States Clean Energy startups

Early-stage fund focused on rapid, scalable climate action and targeting outsized impact and outsized returns.

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Investment focus

  • Industry: Software, Energy, Real Estate
  • Stage:Seed, Pre-Seed, Convertible Note
  • Geography: United States, United Kingdom, Israel

Investor stats

  • Total investments: 209
  • Round size: Seed $100k–$7.5M; Pre-Seed $150k–$3M; Convertible Note $125k–$1.2M
  • Lead/follow: 9% lead, 91% follow
  • Last fund: Likely still investing — raised $9.9M in 2022

Portfolio highlights

  • Forest3 AI — Forest3 multiplies forest management productivity with small, semi-autonomous equipment for fire prevention and precision harvesting. Forest professionals are empowered to get more coverage in less time with much greater safety.
  • Shellworks — Reimaging nature's packaging with beautifully sustainable, truly compostable alternatives to plastic for cosmetics and beauty products.
  • Merino Energy — Electric cooling and heating installed in an hour or less.
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Clean Energy Venture Group
VC Fund · Brookline, Massachusetts, United States · 10 investments in United States Clean Energy startups

CEVG is an angel investor collective that invest in and mentors early-stage cleantech and climatetech startups across North America.

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Investment focus

  • Industry: Energy, Renewable Energy, Manufacturing
  • Stage:Seed, Series A, Convertible Note
  • Geography: United States, Canada

Investor stats

  • Total investments: 74
  • Round size: Seed $1M–$5.6M; Series A $2M–$11M; Convertible Note $630k–$2.5M
  • Lead/follow: 8% lead, 92% follow
  • Last fund: May invest from a new fund soon — raised $108M in 2019

Portfolio highlights

  • PeelON — At PeelON, we're passionate about freshness, sustainability, and innovation. Our mission is to revolutionize the packaging industry by offering biodegradable solutions that keep produce fresher for longer while minimizing environmental impact. With PeelON, you can trust that your fruits and vegetables stay crisp, delicious, and planet-friendly. Join us in our journey towards a fresher, greener future. - Biodegradable covers - food packaging - biodegradable food packing - fresh fruit covers
  • Queens Carbon — Queens Carbon is working on a processing system that will dramatically cut energy use. The system minimizes calcination and material synthesis energy consumption, allowing for low-cost carbon capture and carbon-neutral cement manufacture.
  • Electrified Thermal Solutions — Electrified Thermal Solutions, Inc. is developing the Joule Hive: a new energy storage technology that converts surplus zero-carbon electricity into heat.
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Lowercarbon Capital
VC Fund · New York, New York, United States · 10 investments in United States Clean Energy startups, 28 in the past 12 months

Lowercarbon Capital backs kickass companies slashing CO2 emissions, sucking carbon out of the sky, and buying us time to unf**k the planet.

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Investment focus

  • Industry: Renewable Energy, Energy, Manufacturing
  • Stage:Series A, Seed, Series B
  • Geography: United States, United Kingdom, France

Investor stats

  • Total investments: 227
  • Round size: Seed $3M–$12M; Series A $11M–$50M; Series B $21M–$150M
  • Lead/follow: 39% lead, 61% follow
  • Last fund: Likely actively investing — fresh fund, raised $11M in 2025

Portfolio highlights

  • River — Empowering people, improving lives.
  • Rune Energy — Rune Energy is a developer of a computation technology intended to monetize underutilized and surplus clean power.
  • Rainmaker Technology — Rainmaker uses drone-based cloud seeding to increase rainfall, restore ecosystems, and fight drought. Learn how our scalable weather technology brings water to the West.
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Khosla Ventures
VC Fund · Menlo Park, California, United States · 9 investments in United States Clean Energy startups

Khosla Ventures is a venture capital firm that invests in early- to late-stage companies across sectors like AI, healthcare, sustainability, and consumer technology. It manages multiple funds, focusing on startups with innovative technologies or business models. The firm primarily targets sectors like AI, climate tech, digital health, and medtech,offering strategic support to help build long-lasting companies.

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Investment focus

  • Industry: Artificial Intelligence, Software, Health Care
  • Stage:Series A, Seed, Series B
  • Geography: United States, United Kingdom, India

Investor stats

  • Total investments: 1495
  • Round size: Seed $1.8M–$22M; Series A $5.5M–$47M; Series B $10M–$100M
  • Lead/follow: 39% lead, 61% follow
  • Last fund: Likely actively investing — fresh fund, raised $31M in 2026

Portfolio highlights

  • C the Signs — Discover C the Signs: a cutting-edge cancer prediction system enhancing early detection and survival. Committed to reducing healthcare disparities.
  • LanzaTech — LanzaTech is turning our global carbon crisis into a feedstock opportunity with the potential to displace 30% of crude oil use today and reduce global CO2 emissions by 10%. By recycling carbon from industrial off-gases; syngas generated from any biomass resource (e.g. municipal solid waste (MSW), organic industrial waste, agricultural waste); andreformed biogas, LanzaTech can reduce emissions and make new products for a circular carbon economy.LanzaTech’s carbon recycling technology is like retrofitting a brewery onto an emission source like a steel mill or a landfill site, but instead of using sugars and yeast to make beer, pollution is converted by bacteria to fuels and chemicals! Imagine a day when your plane is powered by recycled GHG emissions, when your yoga pants started life as pollution from a steel mill. This future is possible using LanzaTech technology.
  • littleBits Electronics — LittleBits is an open source library of over 60 electronic modules that snap together with magnets allows users to view, download, and share designs and make their own Bits through the use of prototypes. Deluxe kit, Smart home kit, Arduino coding kit, Synth kit, hardware development kit, and workshop set are some of the electronics learning modulesprovided by littleBits.LittleBits was launched by Ayah Bdeir in 2011 and is operated from New York, United States.
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Everywhere Ventures
VC Fund · New York, New York, United States · 9 investments in United States Clean Energy startups

Everywhere Ventures is a global pre-seed venture capital fund for founders, by founders. Click to read Everywhere VC, by Everywhere Ventures, a Substack publication with tens of thousands of subscribers.

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Investment focus

  • Industry: Software, Health Care, Artificial Intelligence
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, United Kingdom, Australia

Investor stats

  • Total investments: 1304
  • Round size: Seed $1M–$6.5M; Pre-Seed $250k–$2.5M; Series A $6M–$20M
  • Lead/follow: 2% lead, 98% follow
  • Last fund: Likely actively investing — fresh fund, raised $4.4M in 2026

Portfolio highlights

  • Donna — Meet Donna, the AI assistant built for field sales teams. Save time, cut admin, and close more deals with less effort.
  • Noise — Noise makes finding UGC creators easy. Work smarter with personalized AI guidance to make your next UGC creator campaign go viral.
  • Axo Longevity — Axo Longevity offers membership-based biomarker testing and digital health plans for preventive wellness and longevity optimization.
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Energy Impact Partners
VC Fund · New York, New York, United States · 9 investments in United States Clean Energy startups, 20 in the past 12 months

Energy Impact Partners LP (EIP) is a global venture capital firm leading the transition to a sustainable future. EIP brings together entrepreneurs and the world's most forward-looking energy and industrial companies to advance innovation. With over $2.5 billion in assets under management, EIP invests globally across venture, growth, credit,and infrastructure.

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Investment focus

  • Industry: Software, Energy, Renewable Energy
  • Stage:Series A, Series B, Series C
  • Geography: United States, Canada, United Kingdom

Investor stats

  • Total investments: 218
  • Round size: Series A $8.8M–$33M; Series B $15M–$111M; Series C $23M–$110M
  • Lead/follow: 51% lead, 49% follow
  • Last fund: Likely actively investing — fresh fund, raised $1.4B in 2025

Portfolio highlights

  • Reverion — Reverion develops reversible and carbon-negative power plants using patented biogas technology for renewable energy.
  • CivilGrid — CivilGrid centralizes utility, environmental, geotechnical, and other site data in a SaaS platform where your teams can collaboratively scope and plan projects.
  • Reframe Systems — Robotic microfactories for building net-zero homes 2x faster, 2x cheaper with 10x lower carbon
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Collaborative Fund
VC Fund · New York, New York, United States · 8 investments in United States Clean Energy startups

Collaborative Fund is a leading source of capital for entrepreneurs pushing the world forward.

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Investment focus

  • Industry: Software, Food and Beverage, Artificial Intelligence
  • Stage:Seed, Series A, Series B
  • Geography: United States, United Kingdom, South Korea

Investor stats

  • Total investments: 400
  • Round size: Seed $1.2M–$10M; Series A $4.7M–$31M; Series B $15M–$75M
  • Lead/follow: 17% lead, 83% follow
  • Last fund: Likely actively investing — fresh fund, raised $15M in 2026

Portfolio highlights

  • Diffraqtion — Quantum camera platform that enables satellites and machines to see further and think faster with cutting-edge technology.
  • Switchboard — Switchboard's service design, coaching, and software offerings generate real results for higher ed teams and institutions.
  • A Vinyl Bar in Shibuya — a music (software) label
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Wonder Ventures
VC Fund · Santa Monica, California, United States · 7 investments in United States Clean Energy startups

Wonder Ventures invests in entrepreneurs who have great ideas. Who build the world’s most innovative technology companies in order to address the world’s toughest challenges. Who think of long-term solutions that span generations.We are based in Santa Monica, CA. We actively invest in Los Angeles, New York City, Silicon Valley, Washington D.C.and anywhere great teams are located.

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Investment focus

  • Industry: Software, Internet, Health Care
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States

Investor stats

  • Total investments: 93
  • Round size: Seed $1.3M–$7M; Pre-Seed $620k–$2.7M; Series A $8M–$46M
  • Lead/follow: 19% lead, 81% follow
  • Last fund: Likely still investing — raised $44M in 2022

Portfolio highlights

  • Ownwell — Ownwell combines technology and local expertise to help real estate owners save money on property taxes.
  • Mogul — Your path to financial success in the music business.
  • The Biological Computing — Biological Black Box integrates biological neurons with artificial neural networks to develop a living computer.
Show all investments...

Access 48,091 investors

822 industries, 177 countries. Updated daily. Emails and phones included.

Browse database — It's Free!
Powerhouse Ventures
VC Fund · Oakland, California, United States · 7 investments in United States Clean Energy startups

Powerhouse Ventures backs entrepreneurs building the digital infrastructure for rapid decarbonization.

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Investment focus

  • Industry: Software, Energy, Solar
  • Stage:Seed, Series A, Pre-Seed
  • Geography: United States, India, Canada

Investor stats

  • Total investments: 81
  • Round size: Seed $1.1M–$5M; Pre-Seed $1.1M–$1.5M; Series A $3.3M–$30M
  • Lead/follow: 14% lead, 86% follow
  • Last fund: Likely still investing — raised $70M in 2022

Portfolio highlights

  • CVector — Stream, model, and act on your energy and industrial data in real time. CVector unifies asset and market data so you can make faster, smarter project decisions.
  • ThinkLabs AI — Physics-informed AI agents delivering continuous automation for grid planning and operations.
  • TrustBridge.GG — The premier platform for competitive PlayStation gaming with secure escrow-based competitive gaming. Put your gaming skills to the test and earn real money on the most secure PlayStation competitive gaming platform.
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Massachusetts Clean Energy Center
VC Fund · Boston, Massachusetts, United States · 6 investments in United States Clean Energy startups

The Massachusetts Clean Energy Center (MassCEC) is dedicated to accelerating the success of clean energy development and implementation—while creating high-quality jobs and long-term economic growth in Massachusetts. MassCEC is the first state agency in the nation dedicated solely to facilitating the development of the clean energy industry. We areled by people who bring knowledge, experience and an entrepreneurial attitude to help clean energy companies take full advantage of all the state’s unique assets, to help accelerate the development of renewable energy generation projects, and to help develop a workforce that is ready to roll up its sleeves to ensure Massachusetts’ place as a national and global clean energy hub.

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Investment focus

  • Industry: Energy, Renewable Energy, Manufacturing
  • Stage:Grant, Seed, Series A
  • Geography: United States, United Kingdom, Italy

Investor stats

  • Total investments: 293
  • Round size: Seed $1.7M–$10M; Grant $50k–$400k; Series A $1.2M–$10M
  • Lead/follow: 80% lead, 20% follow

Portfolio highlights

  • HKG Energy — HKG Energy is a material science and nanotechnology company founded by a team of Harvard scientists and battery industry veterans. Our proprietary Terra Silicon solutions increase energy density by 80% and reduce costs by 40% in lithium-ion, sodium-ion, and solid-state battery cells for the power tools, consumer electronics, robotics, electricvehicle, and aviation industries.Connect with us at contact@hkgenergy.com to learn more and discuss your battery development requirements.
  • Teragen Energy — Teragen Energy develops an energy technology platform based on advanced regenerative solid oxide fuel cells that provide both power generation and energy storage in a single system. The company’s systems generate electricity from external fuels such as natural gas or hydrogen without combustion and can operate in reverse to store power as hydrogen.Teragen designs modular systems that can be scaled from megawatt-scale installations for data centers to deployments for microgrids, renewable projects, and utilities. Its technology is intended to help operators manage variable renewable output, ride through outages, and address daily capacity needs using one device. Teragen focuses on applications including AI and cloud data centers, manufacturing and cold storage facilities, remote communities, and electric grid infrastructure. The platform is positioned to replace separate diesel generators and battery systems by combining fuel-flexible generation and low-cost storage in a compact footprint.
  • Worcester Polytechnic Institute — WPI has a lot to offer - extraordinary students, world-renowned faculty members at the top of their fields, state-of-the-art research facilities, and a community teeming with activity. You have a lot to offer too - you're ambitious, you want to be challenged, you want to succeed, and you want to make a difference in the world. You know whereyou want to go; WPI can help you get there.
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Safar Partners
VC Fund · Cambridge, Massachusetts, United States · 6 investments in United States Clean Energy startups, 13 in the past 12 months

Safar Partners is a seed- to growth-stage venture fund investing primarily in technology companies out of MIT, Harvard, and the University of Rochester. We invest in platform technologies in the cleantech and advanced materials, AI/IT and robotics, and life science/medical device areas.

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Investment focus

  • Industry: Biotechnology, Health Care, Information Technology
  • Stage:Seed, Series A, Series B
  • Geography: United States, China, Italy

Investor stats

  • Total investments: 94
  • Round size: Seed $1.5M–$38M; Series A $11M–$40M; Series B $7M–$863M
  • Lead/follow: 20% lead, 80% follow
  • Last fund: Likely actively investing — fresh fund, raised $12M in 2026

Portfolio highlights

  • Quaise Energy — Quaise is an energy company unlocking geothermal energy for the world population through millimeter wave drilling technology.
  • Quintessent — Quintessent is developing optical connectivity solutions to scale computing and Artificial Intelligence (A.I.).
  • EELI Technology — EELI Technology Inc., a Silicon Valley–based critical minerals technology company, enables lithium production from sources once considered impossible to mine economically —cheaper, faster, electrified.
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Good Growth Capital
VC Fund · Charleston, South Carolina, United States · 6 investments in United States Clean Energy startups

Good Growth Capital is an early-stage venture capital firm known for its expertise in finding, assessing and cultivating complex science and technology.

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Investment focus

  • Industry: Health Care, Biotechnology, Software
  • Stage:Seed, Series A, Convertible Note
  • Geography: United States, France, Israel

Investor stats

  • Total investments: 130
  • Round size: Seed $505k–$8.2M; Series A $4.2M–$24M; Convertible Note $25k–$300k
  • Lead/follow: 35% lead, 65% follow
  • Last fund: Likely still investing — raised $43M in 2023

Portfolio highlights

  • Ateios — Ateios is enabling a new generation of thin and flexible electronics with our ultra-thin, conformable, and customizable batteries. The company's current focus is zinc-oxide batteries, that achieve 2-5x higher energy density compared to coin cells. Ateios’ novel manufacturing process allows customizable batteries that can be shaped around theneeds of the product.The company was founded in 2018.
  • Obsidio — Obsidio™ Conformable Embolic with aqueous gel technology is a 510(k) cleared device, the first of its kind to have a specific on-label indication for peripheral use in the U.S.
  • Avisi Technologies — Avisi Technologies is developing a nanotechnology-enabled defense against blindness from glaucoma.
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Prelude Ventures
VC Fund · San Francisco, California, United States · 6 investments in United States Clean Energy startups, 10 in the past 12 months

Prelude Ventures invests in and supports early-stage startups with the greatest potential to mitigate climate change. For us, climate is everything.

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Investment focus

  • Industry: Software, Energy, Renewable Energy
  • Stage:Series A, Series B, Seed
  • Geography: United States, Canada

Investor stats

  • Total investments: 186
  • Round size: Seed $2.5M–$10M; Series A $6.5M–$32M; Series B $9.3M–$101M
  • Lead/follow: 30% lead, 70% follow
  • Last fund: May invest from a new fund soon — last raise in 2013

Portfolio highlights

  • Quaise Energy — Quaise is an energy company unlocking geothermal energy for the world population through millimeter wave drilling technology.
  • Form Energy — Form Energy is an American company driving innovation in energy manufacturing and technology to ensure a clean, secure, and reliable electric grid.
  • Branch Energy — A tech-powered, green energy provider focused on helping consumers reduce their energy bills and carbon footprints
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Jericho Energy Ventures
VC Fund · Vancouver, British Columbia, Canada · 6 investments in United States Clean Energy startups

Jericho Energy Ventures invests in hydrogen technologies, energy storage, carbon capture, and new energy systems. Their Investments in Low Carbon energy sources, technologies, and applications will aid in the transition away from fossil sources creating a more sustainable future.

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Investment focus

  • Industry: Energy, CleanTech, GreenTech
  • Stage:Series A, Corporate Round
  • Geography: United States

Investor stats

  • Total investments: 7
  • Round size: Series A $3M–$11M
  • Lead/follow: 71% lead, 29% follow

Portfolio highlights

  • Calicat — H2UTechnologies -Co-founded by Motus Ventures and H2U Chief Scientific Advisor, Dr Nathan Lewis-George L. Argyros Professor of Chemistry at the California Institute of Technology and founding Director and Scientific Director of JCAP (Joint Center for Artificial Photosynthesis)/Cal Tech...clean energy
  • Oklahoma AI Ventures — Oklahoma AI Ventures operates as a special-purpose asset development vehicle designed to secure, assemble, and prepare commercial land sites for infrastructure scaling. Its core business model centers on pairing institutional real estate development with zero-emission hydrogen energy technologies to support power-intensive computing facilities. Theprimary value proposition is delivering dedicated, sustainable, and grid-independent power generation assets tailored to satisfy the extreme electricity demands of high-density artificial intelligence cluster operations.
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AP Ventures
VC Fund · London, England, United Kingdom · 6 investments in United States Clean Energy startups

AP Ventures invests in pioneering technologies and businesses that harness the unique chemical and physical properties of Platinum Group Metals to solve global challenges.AP Ventures is led by a specialist investment team with proven expertise and a successful track record. We offer investors access to high growth technologies that are developingsolutions to solve global issues.

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Investment focus

  • Industry: Energy, Renewable Energy, Manufacturing
  • Stage:Series A, Seed, Series B
  • Geography: United States, France, Norway

Investor stats

  • Total investments: 50
  • Round size: Seed $3.1M–$8.2M; Series A $3.5M–$23M; Series B $4.2M–$139M
  • Lead/follow: 38% lead, 62% follow
  • Last fund: Likely actively investing — fresh fund, raised $195M in 2025

Portfolio highlights

  • Ravel — Ravel revolutionizes textile recycling through purification technology, effectively separating and repurposing blended materials. Join us in shaping a circular textile economy.
  • Teragen Energy — Teragen Energy develops an energy technology platform based on advanced regenerative solid oxide fuel cells that provide both power generation and energy storage in a single system. The company’s systems generate electricity from external fuels such as natural gas or hydrogen without combustion and can operate in reverse to store power as hydrogen.Teragen designs modular systems that can be scaled from megawatt-scale installations for data centers to deployments for microgrids, renewable projects, and utilities. Its technology is intended to help operators manage variable renewable output, ride through outages, and address daily capacity needs using one device. Teragen focuses on applications including AI and cloud data centers, manufacturing and cold storage facilities, remote communities, and electric grid infrastructure. The platform is positioned to replace separate diesel generators and battery systems by combining fuel-flexible generation and low-cost storage in a compact footprint.
  • Immaterial — Facilitating the energy transition with advanced materials.
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The Engine
VC Fund · Cambridge, Massachusetts, United States · 5 investments in United States Clean Energy startups

A home for Tough Tech founders.

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Investment focus

  • Industry: Biotechnology, Health Care, Software
  • Stage:Seed, Series A, Series B
  • Geography: United States

Investor stats

  • Total investments: 90
  • Round size: Seed $2M–$11M; Series A $5.8M–$80M; Series B $16M–$150M
  • Lead/follow: 33% lead, 67% follow
  • Last fund: May invest from a new fund soon — raised $230M in 2020

Portfolio highlights

  • Hyperlight — HyperLight unleashes the potential of integrated photonics by developing a proprietary platform based on thin-film lithium niobate (TFLN)
  • BlueShift — BlueShift operates as an electrochemical climate tech innovator. BlueShift unlocks underutilized resources with advanced electrochemical technology.
  • RISE Robotics — RISE Robotics is a technology company that develops fluid-free motion control systems for heavy machinery. The company makes the electrification, teleoperation, and automation of heavy machinery economically viable using its hydraulic replacement technology called Beltdraulic. It is a belt-and-pulley-based linear actuation technology thatreplicates—and in some cases surpasses—the force and precision of hydraulic systems, without using oil. This innovation enables machines to operate faster, more efficiently, and with lower emissions while reducing operational costs.RISE Robotics also offers design and implementation support, working closely with OEMs, Tier 1 suppliers, and the U.S. Department of Defense to integrate Beltdraulic solutions into existing systems. Its mission emphasizes boosting machine productivity, reducing maintenance needs, and promoting environmental sustainability through cutting-edge actuation technology.
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Clean Energy Ventures
VC Fund · Boston, Massachusetts, United States · 5 investments in United States Clean Energy startups

Clean Energy Ventures backs founders turning breakthrough climate innovations into scaling companies, with decades of engineering and commercial expertise at seed and Series A.

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Investment focus

  • Industry: Manufacturing, Energy, Renewable Energy
  • Stage:Seed, Series A, Series B
  • Geography: United States, Canada, Israel

Investor stats

  • Total investments: 75
  • Round size: Seed $1.5M–$10M; Series A $2.5M–$28M; Series B $7.3M–$33M
  • Lead/follow: 68% lead, 32% follow
  • Last fund: Likely still investing — raised $305M in 2024

Portfolio highlights

  • DG Matrix — DG Matrix innovative solutions unlock gigaton-scale emissions reductions by enabling electrification anywhere and everywhere with less material and a smaller footprint.
  • Branch Energy — A tech-powered, green energy provider focused on helping consumers reduce their energy bills and carbon footprints
  • Hertha Metals — At Hertha Metals, we are developing advanced steel solutions to accelerate the growth and global competitiveness of the U.S. steel industry.
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Shell Ventures
VC Fund · Rijswijk, Zuid-Holland, The Netherlands · 5 investments in United States Clean Energy startups

Shell Ventures invests in companies to speed up development and deployment of new technologies which complement our business.

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Investment focus

  • Industry: Energy, Renewable Energy, Software
  • Stage:Series A, Series B, Venture - Series Unknown
  • Geography: United States, United Kingdom, India

Investor stats

  • Total investments: 176
  • Round size: Series A $6M–$31M; Series B $2.8M–$126M; Venture - Series Unknown $3M–$32M
  • Lead/follow: 36% lead, 64% follow

Portfolio highlights

  • Mazama — Superhot rock geothermal, proven at 629 degrees F, with the potential to deliver gigawatt-scale, always-on power, anywhere.
  • Asperitas — Asperitas is a clean-tech company focused on greening the datacentre industry by introducing Immersed Computing. Since 2014 Asperitas has worked on validating and developing Immersed Computing® as a unique approach to the datacentre industry. Building on existing liquid immersion cooling technologies by adding integration of power and networkcomponents, improving cooling physics with a strong focus on design and engineering for usability, Asperitas has come up with a complete and integrated solution which can be effectively utilised in most, if not all situations.
  • Bumper — Split the cost of your car repairs and servicing into manageable monthly instalments with 0% interest. Fix it. Split it. Sorted.
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Overture Ventures
VC Fund · Los Angeles, California, United States · 5 investments in United States Clean Energy startups, 8 in the past 12 months

Overture is an early stage climate tech fund at the intersection of government.

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Investment focus

  • Industry: Energy, Renewable Energy, Manufacturing
  • Stage:Seed, Series A, Series B
  • Geography: United States, Canada

Investor stats

  • Total investments: 54
  • Round size: Seed $2M–$25M; Series A $12M–$60M; Series B $6M–$150M
  • Lead/follow: 7% lead, 93% follow
  • Last fund: Likely still investing — raised $60M in 2021

Portfolio highlights

  • Fluxco — One spec in, competitive bids from 150+ global OEMs back in days. Procurement, leasing, service and warranty from one accountable partner.
  • Recheck — Recheck is the verification platform for the residential solar industry.
  • Atana Elements — Atana is accelerating the exploration and development of flowing critical minerals and industrial gases. Atana uses a proprietary tech stack to identify and mature mineral resources quickly and effectively.
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BoxGroup
VC Fund · New York, New York, United States · 5 investments in United States Clean Energy startups

BoxGroup is an early stage investment fund focused on technology companies. Contact Us: hello@boxgroup.com

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Investment focus

  • Industry: Software, Artificial Intelligence, Information Technology
  • Stage:Seed, Series A, Series B
  • Geography: United States, United Kingdom, Canada

Investor stats

  • Total investments: 842
  • Round size: Seed $1.6M–$9.5M; Series A $5.5M–$32M; Series B $19M–$90M
  • Lead/follow: 6% lead, 94% follow
  • Last fund: Likely actively investing — fresh fund, raised $275M in 2025

Portfolio highlights

  • Corridor — Corridor is a health insurance brokerage that helps small businesses provide health benefits to employees.
  • Funnel — Our revolutionary CRM property management software saves both time and money for agents and owners while making leasing more efficient.
  • Quartermaster AI — A distributed sensor network delivering HD video and real-time AI insights to help civil and commercial operators monitor, detect and respond across global waters.
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Crosscut Ventures
VC Fund · Los Angeles, California, United States · 5 investments in United States Clean Energy startups

Crosscut is a venture capital firm in Los Angeles. We partner with early-stage founders to build extraordinary technology companies from Seed to Series A.

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Investment focus

  • Industry: Software, Information Technology, Internet
  • Stage:Seed, Series A, Pre-Seed
  • Geography: United States, Colombia

Investor stats

  • Total investments: 186
  • Round size: Seed $1.5M–$6.1M; Pre-Seed $1M–$2.3M; Series A $2.2M–$25M
  • Lead/follow: 25% lead, 75% follow
  • Last fund: Likely actively investing — fresh fund, raised $2.6M in 2025

Portfolio highlights

  • SoloPulse — SoloPulse is changing how the world sees by bringing a new approach to sensing and communication technologies that is based on proprietary mathematical wave theory algorithms. This approach unlocks barriers that legacy technologies face while also improving computational efficiency and resolution. SoloPulse’s advanced sensing and beamformingtechniques can use a single electromagnetic pulse to produce high-resolution imaging and increased data transmission rates.
  • Solestial — For new space projects that need 100X more power @ 1/10 the price vs. incumbent III-V technology. Regher develops radiation-hardened silicon solar technology to make power in space affordable.There is a demand for 100 MW of solar for space in the next 5 years. But the existing space solar panels are extremely expensive and very slow tomanufacture. With today's technology 100 MW of space solar panels will cost more than $60B and it will take more than 10 years to manufacture. Regher Solar solves this problem. Regher Solar is revolutionizing the access to power in space with space tolerant ultrathin silicon solar panels, which for the first time on the market, will have both high efficiency and low cost in a single light-weight and flexible package.
  • Proteus Space — Pioneering Automated Satellite Design for Rapid, Payload-Tailored Satellite Deployments with a World-Class Space and Advanced Technology Leadership Team
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Anzu Partners
VC Fund · Washington, District of Columbia, United States · 5 investments in United States Clean Energy startups

Anzu Partners invests in breakthrough clean tech, industrial, and life science technologies with $1B in assets under management across venture, credit, and public structures.

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Investment focus

  • Industry: Software, Biotechnology, Manufacturing
  • Stage:Series A, Series B, Venture - Series Unknown
  • Geography: United States, Canada, Spain

Investor stats

  • Total investments: 83
  • Round size: Series A $6M–$25M; Series B $5M–$44M; Venture - Series Unknown $7M–$21M
  • Lead/follow: 54% lead, 46% follow
  • Last fund: Likely still investing — raised $100M in 2024

Portfolio highlights

  • CytoTronics — CytoTronics is designing and developing cell culture plates with embedded high-density electronic systems.
  • EnCharge AI — AI Compute from the Edge-to-Cloud for Every Business. Transformative technology for AI computation, breaking records in efficiency and sustainability to enable state-of-the-art models uninhibited by power, space, and cost constraints.
  • South 8 Technologies — South 8's LiGas cells are engineered to deliver unmatched performance and safety in the most demanding environments.
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Climate Pledge Fund
VC Fund · Seattle, Washington, United States · 5 investments in United States Clean Energy startups

In June 2020, Amazon announced The Climate Pledge Fund to support the development of sustainable and decarbonizing technologies and services that will enable Amazon and other companies to meet the goals set by The Climate Pledge. This dedicated investment program—with an initial $2 billion in funding—will invest in visionary companies whoseproducts and solutions will facilitate the transition to a low-carbon economy.

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Investment focus

  • Industry: Energy, CleanTech, Manufacturing
  • Stage:Series A, Series B, Seed
  • Geography: United States, Canada, India

Investor stats

  • Total investments: 59
  • Round size: Seed $2M–$5M; Series A $11M–$80M; Series B $21M–$246M
  • Lead/follow: 29% lead, 71% follow

Portfolio highlights

  • Mill — Mill is the smartest device in your kitchen. Mill turns would-be food waste into resources for the Earth. Keep filling it for weeks.
  • Moment Energy — Moment Energy empowers commercial and industrial clients across North America to reduce operational costs, increase energy resilience for business, and achieve sustainability goals.
  • Hoofprint Biome — Hoofprint Biome, developing probiotics for to increase feed digestibility and decreasing methane in cattle
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Tamarack Global
VC Fund · New York, New York, United States · 5 investments in United States Clean Energy startups, 6 in the past 12 months

Tamarack Global operates as an investment firm that invests in new markets and new economies. The frim specializes in the fields of finance, financial services, and hedge funds.

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Investment focus

  • Industry: Artificial Intelligence, Information Technology, Internet
  • Stage:Seed, Series A, Series B
  • Geography: United States, Denmark, United Kingdom

Investor stats

  • Total investments: 31
  • Round size: Seed $1.8M–$47M; Series A $10M–$700M; Series B $20M–$675M
  • Lead/follow: 23% lead, 77% follow
  • Last fund: Likely actively investing — fresh fund, raised $6.2M in 2026

Portfolio highlights

  • Rilian Technologies — Rilian develops cybersecurity and defense technology platforms that enable organizations to deploy, integrate, and operate advanced security tools across complex and regulated environments. The company provides an AI-driven security orchestration platform that unifies multiple cybersecurity tools into a single interface, allowing analysts toautomate workflows, monitor threats, and respond to incidents more efficiently. Its offerings include systems for automated deployment and compliance that allow security technologies to operate in air-gapped, sovereign, and highly regulated environments without relying on traditional cloud infrastructure. The company also maintains a curated ecosystem of cybersecurity tools that are pre-integrated and validated for use in mission-critical settings, reducing complexity in adoption and integration.
  • Hark — We are building the most advanced personal intelligence in the world.
  • Blue Energy — Modular power plants for modular nuclear reactors
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Foothill Ventures
VC Fund · Los Altos, California, United States · 5 investments in United States Clean Energy startups

Foothill Ventures is a technology-focused venture fund that invests in seed-to-A-round startups in the United States. It is a successor fund to the TEEC Angel Fund. Foothill Ventures was founded in 2017 and is headquartered in Los Altos, California.

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Investment focus

  • Industry: Artificial Intelligence, Software, Biotechnology
  • Stage:Seed, Series A
  • Geography: United States, China, Canada

Investor stats

  • Total investments: 117
  • Round size: Seed $1.5M–$12M; Series A $7.5M–$35M
  • Lead/follow: 18% lead, 82% follow
  • Last fund: May invest from a new fund soon — raised $100M in 2021

Portfolio highlights

  • Nervonik — Explore Nervonik neuromodulation devices that are working to redefine peripheral nerve stimulation with advanced technology for high motion.
  • Hyperlight — HyperLight unleashes the potential of integrated photonics by developing a proprietary platform based on thin-film lithium niobate (TFLN)
  • South 8 Technologies — South 8's LiGas cells are engineered to deliver unmatched performance and safety in the most demanding environments.
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Bolt
VC Fund · San Francisco, California, United States · 5 investments in United States Clean Energy startups

Bolt: Investing at the intersection of the digital and physical worlds

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Investment focus

  • Industry: Software, Health Care, Hardware
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, Canada

Investor stats

  • Total investments: 126
  • Round size: Seed $765k–$5.5M; Pre-Seed $130k–$2.5M; Series A $8M–$15M
  • Lead/follow: 25% lead, 75% follow
  • Last fund: May invest from a new fund soon — raised $70M in 2017

Portfolio highlights

  • FYTO — Revolutionary Sustainable Agriculture
  • Blackbird — We believe the next great hospitality technology platform should connect restaurants and their customers directly, in meaningful and ongoing ways. Blackbird is founded by a team with a passion for restaurants and a track record of using technology to solve problems.
  • Foundation — Foundation Devices builds the open hardware foundation for Bitcoin and the sovereign Internet.They started Foundation Devices to make beautifully designed, open-source hardware for Bitcoin and the decentralized Internet. To bring great design and UX to hardware wallets, nodes, and more. To empower individuals to securely use and store Bitcoinwhile maintaining their sovereignty. To help our industry cross the chasm while staying true to its founding ideals. We call this open hardware. And we are excited to bring it to the world!
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Congruent Ventures
VC Fund · Oakland, California, United States · 4 investments in United States Clean Energy startups, 17 in the past 12 months

Congruent Ventures is a venture capital firm that seeks to invest in Mobility and Urbanization, Energy Transition, Food and Agriculture, and Sustainable Production & Consumption sectors. We look for technology companies that will positively impact our energy and resource consumption. If we see an opportunity to partner with a like-minded teamfocused on scale across hardware, software, or services, we’re interested.

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Investment focus

  • Industry: Software, Energy, Sustainability
  • Stage:Seed, Series A, Series B
  • Geography: United States, Canada, United Kingdom

Investor stats

  • Total investments: 158
  • Round size: Seed $2.1M–$11M; Series A $4.6M–$26M; Series B $10M–$90M
  • Lead/follow: 32% lead, 68% follow
  • Last fund: Likely still investing — raised $85M in 2024

Portfolio highlights

  • Robigo — Engineering the plant microbiome for a more sustainable food system
  • RockRose Risk — RockRose Risk quantifies wildfire mitigation and turns it into real premium reductions. Clients save an average of 21% on residential and 35%+ on commercial placements.
  • Fluxnium — Fluxnium is a pioneer of domestic uranium supply adsorbed from seawater.
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Network.VC
VC Fund · San Francisco, California, United States · 4 investments in United States Clean Energy startups

Venture Funds and Operating System for Independent VC Professionals. Join as a partner and invest in great startups.

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Investment focus

  • Industry: Software, Artificial Intelligence, Information Technology
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, Israel, Ukraine

Investor stats

  • Total investments: 106
  • Round size: Seed $1M–$9M; Pre-Seed $350k–$650k; Series A $6.5M–$22M
  • Lead/follow: 3% lead, 97% follow
  • Last fund: May invest from a new fund soon — last raise in 2019

Portfolio highlights

  • Swarmer — Swarmer is an AI based mission control center for coordinated drones that acts as Firmware for video streaming, logging and monitoring.
  • Peppr AI — Building the data layer for agentic AI in the workplace https://t.co/jjDKUUGUN5
  • Afternoon — Afternoon - modern accounting and bookkeeping for tech startups and ecommerce brands
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Braemar Energy Ventures
VC Fund · New York, New York, United States · 4 investments in United States Clean Energy startups

While energy has been a key to global development since the dawn of the electronic age, the beginning of the new century has seen a tremendous surge in the technology advancements, market activity and the strategic importance of energy around the world. While many companies and investors have sought to take advantage of the tremendous opportunitytoday's energy industry presents, the unique market issues, scientific contributions and complex web of interrelationships require a specialized expertise.Braemar Energy Ventures was formed in 2002 to create a venture capital firm with that expertise. Focused exclusively on technology and communications opportunities in the energy sector, Braemar Energy Ventures has both the industry and operating knowledge to select promising young companies, bring them into the larger energy world and guide them to reach their full potential.The firm's four principals have a long history of successful investments, as well as experience financing and operating companies in the energy sector. Together, they have been responsible for investing in almost 40 energy technology companies, including early stage companies which have grown to become some of the most successful in the sector.Braemar Energy Ventures works with management teams who are skilled in their industry but who can benefit from Braemar's assistance with strategic direction and financing issues. Having worked with many early stage companies, the Braemar Energy Ventures principals understand the challenges that many young companies face and provide invaluable counsel to their portfolio companies on longer-term issues, allowing management to focus on daily operations.

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Investment focus

  • Industry: Energy, Manufacturing, Renewable Energy
  • Stage:Series B, Series C, Series A
  • Geography: United States, Canada, France

Investor stats

  • Total investments: 115
  • Round size: Series A $1.2M–$13M; Series B $5M–$27M; Series C $7M–$45M
  • Lead/follow: 26% lead, 74% follow
  • Last fund: May invest from a new fund soon — raised $300M in 2012

Portfolio highlights

  • NxLite — 3E Nano has developed and is commercializing a low cost, thermally and optically smart, Diamond-Like Carbon (DLC) coating. This nano thin film applied to glass and other transparent media is targeted toward windows, windshields, greenhouses, and solar module manufacturers.
  • ZincFive — ZincFive is an intelligent energy storage and delivery solutions company providing nickel-zinc battery based UPS solutions for mission-critical applications in data centers, intelligent transportation, motive power, and other industries. With 74 patents awarded and 29 patents pending, ZincFive leverages nickel-zinc chemistry within our solutions toprovide high power density and performance simultaneous with superior safety and environmental advantages. ZincFive was founded in 2016 and is based in Tualatin, Oregon.
  • Utilidata — Utilidata is an AI-powered technology company that provides utilities with robust, real-time insights to operate a connected grid and better serve their customers.
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SYSTEMIQ
VC Fund · London, England, United Kingdom · 4 investments in United States Clean Energy startups

Systemiq unlocks system change by developing partnerships with leaders in civil society, innovative investors, government, business & finance.

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Investment focus

  • Industry: Artificial Intelligence, Energy, Software
  • Stage:Series A, Series B, Seed
  • Geography: United States, United Kingdom

Investor stats

  • Total investments: 25
  • Round size: Seed $412k–$4.2M; Series A $9.2M–$24M; Series B $15M–$34M
  • Lead/follow: 12% lead, 88% follow
  • Last fund: Likely still investing — raised $70M in 2022

Portfolio highlights

  • InnerPlant — InnerPlant transforms fields into living sensors with biotech, remote sensing, and data science. We enable plants to express stress within hours of emergence.
  • Ren Energy — We create tools that empower organizations to decarbonize their global supply chains.
  • Tangible — Tangible empowers hardware companies with sustainable asset-based lending solutions. Our platform streamlines debt funding, compliance automation, and financial product design, enabling efficient capital mobilization and comprehensive reporting for a greener future. Scale your business with Twist.
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Hess Corporation
VC Fund · New York, New York, United States · 4 investments in United States Clean Energy startups

Hess Corporation is a leading global independent energy company primarily engaged in the exploration and production of crude oil and natural gas. Hess Corporation has developed apps like Hess Jet and Hess Chopper. This company was founded in 1993.

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Investment focus

  • Industry: Energy, CleanTech, GreenTech
  • Stage:Series A
  • Geography: United States

Investor stats

  • Total investments: 4
  • Round size: Series A $3M–$11M
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Calicat — H2UTechnologies -Co-founded by Motus Ventures and H2U Chief Scientific Advisor, Dr Nathan Lewis-George L. Argyros Professor of Chemistry at the California Institute of Technology and founding Director and Scientific Director of JCAP (Joint Center for Artificial Photosynthesis)/Cal Tech...clean energy
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Summa Equity
VC Fund · Stockholm, Stockholms Lan, Sweden · 4 investments in United States Clean Energy startups

Summa Equity invests in companies that solve global challenges through sustainable growth and positive impact.

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Investment focus

  • Industry: Energy, Software, Information Technology
  • Stage:Venture - Series Unknown, Series C, Private Equity
  • Geography: Norway, United States, Sweden

Investor stats

  • Total investments: 18
  • Round size: Series C $34M–$116M; Venture - Series Unknown $1.5M–$150M
  • Lead/follow: 39% lead, 61% follow
  • Last fund: Likely still investing — raised $594M in 2023

Portfolio highlights

  • EcoOnline — EcoOnline's easy-to-use software system is helping companies to transform their approach to health & safety, chemical safety, and learning data reporting.
  • ZeroAvia — ZeroAvia is producing the world's first practical zero emission aviation powertrain, initially targeting 20-seat airplanes to start replacing dirty jet fuel in regional transport
  • EA Technology — Promoting the development of resilient, accessible, low cost energy networks globally, accelerating the transition to energy decarbonisation.
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New York Ventures
VC Fund · New York, New York, United States · 4 investments in United States Clean Energy startups, 7 in the past 12 months

New York Ventures is dedicated to encouraging innovation and fueling economic growth in communities across the State. This venture capital investment arm of Empire State Development is one of New York State's business resources and innovation investments, including the Governor's START-UP NY program, Innovation Hot Spots, the RegionalEconomic Development Councils, the Centers of Advanced Technology and Centers of Excellence networks, and the SUNY 2020 Initiative.

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Investment focus

  • Industry: Health Care, Biotechnology, Software
  • Stage:Seed, Series A, Series B
  • Geography: United States, Canada, Israel

Investor stats

  • Total investments: 158
  • Round size: Seed $1M–$6.2M; Series A $3M–$20M; Series B $4M–$53M
  • Lead/follow: 5% lead, 95% follow

Portfolio highlights

  • Fathom Therapeutics — The Molecular Frontier
  • CREW Carbon — CREW provides wastewater treatment facilities with a process intensification solution that improves performance, lowers costs, and permanently removes greenhouse gasses.
  • Fesarius Therapeutics — Intelligently Patterned Native-State Hydrogel Wound Dressing for Dermal Tissue Regeneration...
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Austin Ventures
VC Fund · Austin, Texas, United States · 4 investments in United States Clean Energy startups

Austin Ventures is a venture capital and private equity company that specializes in partnering with talented executives and entrepreneurs to build companies. It was founded in 1984 and headquartered in Austin, Texas.

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Investment focus

  • Industry: Software, Enterprise Software, Internet
  • Stage:Series B, Series A, Series C
  • Geography: United States, China, Japan

Investor stats

  • Total investments: 252
  • Round size: Series A $1.6M–$12M; Series B $5M–$30M; Series C $6M–$28M
  • Lead/follow: 37% lead, 63% follow
  • Last fund: May invest from a new fund soon — raised $900M in 2008

Portfolio highlights

  • Onit — Onit deploys Onit Apps to simplify business process automation and improve business productivity across all departments and industries. The Onit App Builder allows business users to drive efficiency and productivity by combining business process management, project management, and information management into one easy to use the tool so the usercan create their own Onit Apps without having to rely on IT for support. Businesses have processes for everything -- whether it’s hiring a vendor or law firm, terminating an employee, submitting a contract for review, requesting a trademark request, obtaining an NDA, etc. Most of these processes are manual, paper-intensive, and cumbersome. With Onit Apps, processes are automated in a few clicks, responsible parties are notified immediately, and data collection is centralized. Onit doesn’t require any software to download or resources from IT.
  • Vrbo — Established in 1995, they've been in the vacation rental business for over 14 years. In fact, VRBO was founded by vacation rental owners who self-manage their second homes, like many of you do. They provide an online space for homeowners to advertise their vacation properties and make it easy for travelers to search 140,000+ rentals in over100 countries worldwide.
  • Tasktop — Tasktop offers a software platform that allows companies to better manage the process of building their software. Tasktop plugs into existing tools and overlays the end-to-end value stream to provide the abstractions, automation, visualizations, and forensics needed to practice value stream management on a daily basis.
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Backstage Capital
VC Fund · West Hollywood, California, United States · 4 investments in United States Clean Energy startups

Backstage Capital is a venture capital fund investing in the best startups led by underrepresented founders in the U.S. The firm was founded in 2015 by Arlan Hamilton and is headquartered in West Hollywood, California, United States.

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Investment focus

  • Industry: Software, Health Care, Internet
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, United Kingdom, Trinidad and Tobago

Investor stats

  • Total investments: 182
  • Round size: Seed $100k–$3.5M; Pre-Seed $100k–$1.5M; Series A $4M–$20M
  • Lead/follow: 14% lead, 86% follow
  • Last fund: May invest from a new fund soon — raised $2.1M in 2021

Portfolio highlights

  • BoldHue — BoldHue is a beauty tech company that develops a Bluetooth-enabled handheld device to customize beauty needs. Its platform uses AI technology to scan faces, display color, and match the color of the face to dispense pigmentation into the base foundation. BoldHue was founded in 2019 and is headquartered in Aurora, Colorado.
  • AudioMob — Monetizing mobile games non-intrusively using audio ads! AudioMob are the creators of Audio Enhanced Banners & Rewarded Audio
  • CreditRich AI — Official Account for the CreditRich app out now on Google Play!
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Horizons Ventures
VC Fund · Hong Kong, Hong Kong Island, Hong Kong · 4 investments in United States Clean Energy startups

Investing in the deep science and technology that can propel humanity towards a radically better future.

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Investment focus

  • Industry: Artificial Intelligence, Software, Biotechnology
  • Stage:Series A, Series B, Seed
  • Geography: United States, United Kingdom, Canada

Investor stats

  • Total investments: 344
  • Round size: Seed $1M–$10M; Series A $5.8M–$42M; Series B $10M–$110M
  • Lead/follow: 42% lead, 58% follow

Portfolio highlights

  • Magisto — Magisto online video editor is a fast & powerful video maker. Turn your photos and video clips into video stories with Magisto movie editor. Start free!
  • Jobspotting — Jobspotting is a recommendations engine that suggests relevant jobs to users based on their skills and experience. The engine is powered by Skills Graph and Semantic Analysis technology. The company was founded in 2013 in Berlin, Germany by ex-Googlers Hessam Lavi, Jan Backes and Manuel Holtz. Robin Haak joined the founding team in 2014 aftermeeting them through the Axel Springer Plug and Play Accelerator Programme, of which he was a co-founder. Jobspotting successfully acquired seed funding.
  • Atomo Coffee — Atomo Coffee is a developer of molecular coffee. Atomo has reverse-engineered the coffee bean to create a smooth cup of coffee, made of naturally derived ingredients, and more sustainable than current commercial coffee.
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DCVC
VC Fund · San Francisco, California, United States · 4 investments in United States Clean Energy startups

We are deep tech venture capital.

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Investment focus

  • Industry: Software, Artificial Intelligence, Machine Learning
  • Stage:Seed, Series A, Series B
  • Geography: United States, Canada, United Kingdom

Investor stats

  • Total investments: 514
  • Round size: Seed $1M–$9.1M; Series A $6M–$42M; Series B $15M–$130M
  • Lead/follow: 23% lead, 77% follow
  • Last fund: Likely actively investing — fresh fund, raised $5M in 2026

Portfolio highlights

  • Soteris — Soteris provides artificial intelligence-based pricing tools to the insurance business. The company is working hard to transform the entire insurance value chain and would like to keep you updated on developments.
  • CH4 Global — CH4 Global is an aquaculture solutions provider dedicated to urgently impacting climate change at scale. Lead by a world-class team of senior business builders, scientists and entrepreneurs, the company is initially leveraging proven science and technology for growing seaweed into innovative new livestock supplement that reduces methane produced bycows by up to 90%. Among early investors are a select group of prominent family offices and private investors. CH4 Global have also received non-dilutive capital support from government organizations from around the world. CH4 Global is a Delaware corporation based in Henderson, NV.
  • Rainmaker Technology — Rainmaker uses drone-based cloud seeding to increase rainfall, restore ecosystems, and fight drought. Learn how our scalable weather technology brings water to the West.
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Starlight Ventures
VC Fund · Miami, Florida, United States · 4 investments in United States Clean Energy startups

Starlight is a venture capital firm for founders addressing the world’s most pressing challenges & opportunities. We partner early with unstoppable entrepreneurs leveraging breakthrough science and technology to pursue progress at scale in four main areas: the energy transition, industrializing synthetic biology, space technology, and novelcomputing & communications platforms.Starlight was founded in 2017 and is headquartered in Miami, Florida.

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Investment focus

  • Industry: Biotechnology, Energy, Health Care
  • Stage:Seed, Series A, Convertible Note
  • Geography: United States, Finland, Italy

Investor stats

  • Total investments: 65
  • Round size: Seed $674k–$8.4M; Series A $10M–$100M; Convertible Note $110k–$8.8M
  • Lead/follow: 11% lead, 89% follow
  • Last fund: May invest from a new fund soon — raised $50M in 2021

Portfolio highlights

  • Ammobia — Ammobia's advanced reactor technology enables economical ammonia production at any scale. 50% lower CapEx, 10-40% lower costs for fuel, fertilizer, and energy.
  • Thea Energy — Discover Thea Energy, a fusion energy company reinventing the stellarator to create a limitless source of zero emission energy for a sustainable future.
  • Commonwealth Fusion Systems — The fastest path to clean, limitless fusion energy.
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Countdown Capital
VC Fund · Columbia, Missouri, United States · 4 investments in United States Clean Energy startups

Investing pre-seed / first checks in founders building hard tech companies.

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Investment focus

  • Industry: Aerospace, Artificial Intelligence, Manufacturing
  • Stage:Seed, Pre-Seed
  • Geography: United States

Investor stats

  • Total investments: 18
  • Round size: Seed $2.3M–$12M; Pre-Seed $1.5M–$3.5M
  • Lead/follow: 11% lead, 89% follow
  • Last fund: Likely still investing — fund raised in 2022

Portfolio highlights

  • Heliux — Heliux centralizes cross-functional teams, operations, and data onto a single platform by replacing your legacy PDM, PLM, ERP, and MES systems.
  • Galvanick — Secure industrial operations. Galvanick's industrial-first Extended Detection & Response (XDR) platform secures industrial systems and networks against cyber attacks.
  • K2 Space — By breaking the historic correlation between mass and cost, the K2 Space satellite bus offers the capabilities of large satellites at the price point of small satellites. A multi-orbit spacecraft for use across commercial, scientific and defense missions.
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Climate Capital
VC Fund · San Francisco, California, United States · 4 investments in United States Clean Energy startups, 6 in the past 12 months

Diversified investments in the most promising early stage climate startups backed by top tier VCs.

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Investment focus

  • Industry: Energy, Manufacturing, Renewable Energy
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, Germany, Canada

Investor stats

  • Total investments: 131
  • Round size: Seed $2M–$9M; Pre-Seed $800k–$2.8M; Series A $9.7M–$31M
  • Lead/follow: 2% lead, 98% follow

Portfolio highlights

  • Revoy — We haul Pacific Northwest freight with our 95% electrified fleet.
  • Ludwig Computing — Ludwig Computing is an AI hardware startup creating energy-efficient compute platforms for future intelligent computing.
  • American Supercritical — American Supercritical is an energy technology company that develops supercritical carbon dioxide (sCO₂) power systems.
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Chrysalix Venture Capital
VC Fund · Vancouver, British Columbia, Canada · 4 investments in United States Clean Energy startups

Leading global venture capital fund that invests in resource intensive industries across North America and Europe.

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Investment focus

  • Industry: Energy, Manufacturing, CleanTech
  • Stage:Series B, Series A
  • Geography: United States, Canada, The Netherlands

Investor stats

  • Total investments: 118
  • Round size: Series A $2M–$16M; Series B $5.4M–$24M
  • Lead/follow: 25% lead, 75% follow
  • Last fund: Likely still investing — fund raised in 2023

Portfolio highlights

  • Luffy AI — Discover Luffy AI's Neuroplastic AI for rapid, adaptive industrial control in robotics, drives, automotive, and more. Enhance system performance and reduce calibration needs. Replace or complement PID loops with Adaptive Control for your Physical AI usecase.
  • Geopyörä Oy — Geopyörä is the state of the art in rock breakage characterization testing and it was developed to allow mining companies to test several samples at low cost for geometallurgical, comminution design and control applications
  • Rithmik Solutions — We increase uptime in mines with advanced analytics that optimize maintenance and extend equipment life.
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Asymmetry Ventures
VC Fund · San Francisco, California, United States · 4 investments in United States Clean Energy startups

Asymmetry Ventures invests in scalable early-stage companies with exceptional defensibility.

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Investment focus

  • Industry: Software, Health Care, Biotechnology
  • Stage:Seed, Pre-Seed, Series A
  • Geography: United States, India, Canada

Investor stats

  • Total investments: 298
  • Round size: Seed $500k–$5M; Pre-Seed $125k–$2.4M; Series A $2M–$21M
  • Lead/follow: 2% lead, 98% follow

Portfolio highlights

  • Enlightra — Extreme-bandwidth data transmission enabled by light
  • Persist AI — Persist AI develops PLGA microspheres for long-acting injectable formulations 50% faster using automation and AI.
  • Coreshell Technologies — Battery Capacity Unlocked
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NY Green Bank
VC Fund · New York, New York, United States · 4 investments in United States Clean Energy startups

NY Green Bank a division of NYSERDA, is a state-sponsored investment fund established to attract private sector capital and accelerate the deployment of clean energy throughout New York State.

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Investment focus

  • Industry: Energy, Renewable Energy, Clean Energy
  • Stage:Debt Financing, Post-IPO Debt
  • Geography: United States, Canada

Investor stats

  • Total investments: 19
  • Round size: Post-IPO Debt $8M–$25M; Debt Financing $1.1M–$275M
  • Lead/follow: 89% lead, 11% follow

Portfolio highlights

  • NineDot Energy — We build community-scale energy systems that support a more resilient electric grid, deliver economic savings and reduce carbon emissions.
  • SolarBank — PowerBank (Nasdaq: PBK) develops solar and battery storage to meet rising energy and AI data center power demand across North America.
  • Convergent Energy and Power — Convergent provides battery energy storage and solar-plus-storage solutions to lower energy costs and reduce carbon emissions on behalf of our partners.
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Keiretsu Capital
VC Fund · Seattle, Washington, United States · 4 investments in United States Clean Energy startups

Keiretsu Capital LLC is an affiliate of the World's Leading Angel Network, Keiretsu Forum, and manages funds which enable limited partners to co-invest in the proprietary deal flow of the angel investors.

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Investment focus

  • Industry: Health Care, Biotechnology, Software
  • Stage:Series A, Convertible Note, Seed
  • Geography: United States, Canada, India

Investor stats

  • Total investments: 287
  • Round size: Seed $400k–$2.5M; Series A $811k–$12M; Convertible Note $50k–$3M
  • Lead/follow: 1% lead, 99% follow
  • Last fund: Likely still investing — raised $3.7M in 2022

Portfolio highlights

  • MiClient — Miclient are deal closure platform which was founded by experienced sales leaders who recognized the need for a new generation of complicated quote configuration, contract signing, renewal & payment collection at one place for SMEs, Lead Management System, B2B SaaS, CRM software, CPQ (Configure- Price- Quote)
  • Healionics — Healionics aims to provide safer, more reliable means of bloodstream access for dialysis in patients with kidney failure.
  • NuvOx Therapeutics — NuvOx Pharma is a clinical stage biotech company developing an innovative platform of oxygen therapeutics to treat life-threatening diseases where hypoxia plays a role.
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Blue Bear Capital
VC Fund · Beverly Hills, California, United States · 4 investments in United States Clean Energy startups

Blue Bear Capital is a venture capital investor supporting companies that apply AI and data-driven technologies to energy infrastructures.

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Investment focus

  • Industry: Software, Artificial Intelligence, Information Technology
  • Stage:Series A, Seed, Series B
  • Geography: United States, Germany, The Netherlands

Investor stats

  • Total investments: 92
  • Round size: Seed $1.5M–$7.3M; Series A $5.3M–$16M; Series B $5.6M–$34M
  • Lead/follow: 39% lead, 61% follow
  • Last fund: Likely actively investing — fresh fund, raised $160M in 2024

Portfolio highlights

  • Korial — Energy Robotics provides an end-to-end solution for autonomous robotic inspection in capital-intensive industries such as oil & gas, chemical and energy.
  • Demex — The Demex Group is a technology company that customizes and delivers climate-resilience through financial risk solutions on a global scale.
  • Lastwall — Lastwall exists to protect democratic institutions by strengthening the cybersecurity posture of defense and critical infrastructure partners.
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Acequia Capital (AceCap)
VC Fund · Seattle, Washington, United States · 4 investments in United States Clean Energy startups

We are a leading early-stage investment platform. We are at the center of a global ecosystem that attracts and fuels the technical founders and product teams building the next wave of global businesses.

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Investment focus

  • Industry: Software, Artificial Intelligence, Information Technology
  • Stage:Seed, Series A, Pre-Seed
  • Geography: United States, United Kingdom, France

Investor stats

  • Total investments: 415
  • Round size: Seed $1M–$7.6M; Pre-Seed $500k–$3.3M; Series A $3.3M–$25M
  • Lead/follow: 5% lead, 95% follow
  • Last fund: Likely actively investing — fresh fund, raised $2.9M in 2026

Portfolio highlights

  • Rapidata — Fast and reliable data labeling that powers your AI. Define your label needs now and get the results in minutes.
  • Devplan — Devplan turns customer feedback into ranked, ready-to-build specs for your engineers and AI agents.
  • Applied Atomics, Inc. — Powering the next 1,000 years of advanced industry with co-located nuclear power plants.
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Nabors
VC Fund · Hamilton, Hamilton, Bermuda · 3 investments in United States Clean Energy startups

With operations in about 15 countries, Nabors Industries is a leading provider of advanced technology for the energy industry.

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Investment focus

  • Industry: Energy, Renewable Energy, Solar
  • Stage:Series A, Corporate Round, Venture - Series Unknown
  • Geography: United States, Australia, Slovakia (Slovak Republic)

Investor stats

  • Total investments: 13
  • Round size: Series A $14M–$58M; Corporate Round $7M–$8M; Venture - Series Unknown $12M–$44M
  • Lead/follow: 38% lead, 62% follow

Portfolio highlights

  • GA Drilling — GA Drilling is a high-tech company developing and commercializing a groundbreaking technology platform PLASMABIT. Our technology enables massive time and cost savings compared to relevant existing drilling technologies and opens up vast new possibilities in oil & gas, geothermal energy, mining and tunneling.
  • Sage Geosystems — Pioneering Pressure Geothermal
  • Hephae Energy Technology — Enabling Next-Generation Geothermal with Ultra High Temperature Robotics to support the life cycle of the geothermal energy transition.
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Threshold
VC Fund · Menlo Park, California, United States · 3 investments in United States Clean Energy startups

Threshold is an early-stage venture capital firm that focuses on a high-conviction investment strategy. The firm partners with entrepreneurs to build innovative consumer, enterprise, and healthcare technology companies.

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Investment focus

  • Industry: Software, Internet, Mobile
  • Stage:Series B, Series A, Series C
  • Geography: United States, India, Canada

Investor stats

  • Total investments: 510
  • Round size: Series A $2.3M–$23M; Series B $4.2M–$50M; Series C $4.5M–$81M
  • Lead/follow: 24% lead, 76% follow
  • Last fund: Likely still investing — raised $450M in 2022

Portfolio highlights

  • EdgeQ — EdgeQ is an information technology company that specializes in the fields of 5G chip systems. The company is pioneering converged connectivity and AI that is fully software-customizable and programmable. It was founded in 2018 and headquartered in Santa Clara, California.
  • CrowdAI — The world's most intuitive computer vision platform built for users of all technical abilities, no code required.
  • SpaceX — SpaceX designs, manufactures and launches advanced rockets and spacecraft.
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Clean Energy Investor funding in United States at a glance

Stats across 1.6k deals from 1.9k investors.

1.9k
investors
in United States Clean Energy startups
1.6k
deals
in United States Clean Energy startups
$8.4M
median round
in United States Clean Energy startups
39%
lead investors
lead at least one round
19%
Grant
most common funding stage
89/11
VC / Angel
share of investor count

Access all 1855 investors in United States Clean Energy startups.

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