# Top 50 Clean Energy Startup Investors in United States in June 2026

## Clean Energy Venture Group
- Type: VC Fund
- Location: Brookline, Massachusetts, United States
- Relevant deals: 11
- Stages: Seed, Series A
- Focus: Energy, Renewable Energy, Manufacturing

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

## Khosla Ventures
- Type: VC Fund
- Location: Menlo Park, California, United States
- Relevant deals: 7
- Stages: Series A, Series B, Seed
- Focus: Software, Artificial Intelligence, Health Care

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.

## Clean Energy Ventures
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 7
- Stages: Seed, Series A
- Focus: Manufacturing, Energy, Renewable Energy

Clean Energy Ventures invests in scalable early-stage climate tech startups and clean energy technologies addressing global climate change.

## Energy Impact Partners
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 7
- Stages: Series A, Series B, Series C
- Focus: Software, Energy, Renewable Energy

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.

## Safar Partners
- Type: VC Fund
- Location: Cambridge, Massachusetts, United States
- Relevant deals: 6
- Stages: Seed, Series A, Series B
- Focus: Biotechnology, Health Care, Manufacturing

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.

## Wonder Ventures
- Type: VC Fund
- Location: Santa Monica, California, United States
- Relevant deals: 6
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, Internet, Health Care

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.

## Austin Ventures
- Type: VC Fund
- Location: Austin, Texas, United States
- Relevant deals: 5
- Stages: Series B, Series A, Series C
- Focus: Software, Enterprise Software, Internet

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.

## Prelude Ventures
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 5
- Stages: Series A, Series B, Series C
- Focus: Software, Energy, Renewable Energy

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

## Third Sphere
- Type: VC Fund
- Location: Brooklyn, New York, United States
- Relevant deals: 5
- Stages: Seed, Pre-Seed, Convertible Note
- Focus: Software, Real Estate, Transportation

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

## Crosscut Ventures
- Type: VC Fund
- Location: Los Angeles, California, United States
- Relevant deals: 5
- Stages: Seed, Series A
- Focus: Software, Internet, Information Technology

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.

## Breakthrough Energy Ventures
- Type: VC Fund
- Location: Paris, Ile-de-France, France
- Relevant deals: 4
- Stages: Series A, Series B
- Focus: Energy, Renewable Energy, Manufacturing

Focused on developing and deploying the critical climate solutions our world needs to reach net-zero emissions by 2050.

## Countdown Capital
- Type: VC Fund
- Location: Columbia, Missouri, United States
- Relevant deals: 4
- Stages: Seed, Pre-Seed
- Focus: Software, Aerospace, Manufacturing

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

## Jericho Energy Ventures
- Type: VC Fund
- Location: Vancouver, British Columbia, Canada
- Relevant deals: 4
- Stages: Series A
- Focus: CleanTech, GreenTech, Clean Energy

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.

## Starlight Ventures
- Type: VC Fund
- Location: Miami, Florida, United States
- Relevant deals: 4
- Stages: Seed, Series A
- Focus: Biotechnology, Energy, Health Care

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.

## The Engine
- Type: VC Fund
- Location: Cambridge, Massachusetts, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Biotechnology, Health Care, Manufacturing

A home for Tough Tech founders.

## Foothill Ventures
- Type: VC Fund
- Location: Los Altos, California, United States
- Relevant deals: 4
- Stages: Seed, Series A
- Focus: Artificial Intelligence, Software, Biotechnology

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.

## Hess Corporation
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 4
- Stages: Series A
- Focus: CleanTech, GreenTech, Clean Energy

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.

## Powerhouse Ventures
- Type: VC Fund
- Location: Oakland, California, United States
- Relevant deals: 4
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, Energy, Solar

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

## Congruent Ventures
- Type: VC Fund
- Location: Oakland, California, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Software, Energy, Robotics

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.

## Alumni Ventures
- Type: VC Fund
- Location: Manchester, New Hampshire, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Software, Artificial Intelligence, Information Technology

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

## New York Ventures
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Health Care, Biotechnology, Software

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.

## EnCap Flatrock Midstream
- Type: VC Fund
- Location: San Antonio, Texas, United States
- Relevant deals: 3
- Stages: Private Equity, Angel, Post-IPO Equity
- Focus: Energy, Oil and Gas, Logistics

EnCap Flatrock Midstream is a venture capital firm with a singular focus: identifying, investing in and enhancing the value of great businesses and attractive assets in the midstream sector of North America's oil and gas industry. Founded in 2008 by Flatrock Energy Advisors and EnCap Investments L.P., the firm is guided by a disciplined andpersistent approach to value creation through the rigorous application of intellectual and financial capital. The firm manages the EnCap Flatrock Midstream Funds I, II and III, which together have approximately $5.6 billion in institutional capital commitments from a broad range of prestigious institutional investors. EnCap Flatrock has more than $6.5 billion in total assets under management.

## Bolt
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, Health Care, Hardware

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

## Acrew Capital
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Series A, Seed, Series B
- Focus: Software, Financial Services, FinTech

Defining the future of venture.

## Braemar Energy Ventures
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Series B, Series C, Series A
- Focus: Manufacturing, Energy, Renewable Energy

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.

## American Family Insurance Institute for Corporate and Social Impact
- Type: VC Fund
- Location: Madison, Wisconsin, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Education, Software, Health Care

Changing the world can't be done alone. We invest in entrepreneurs that are making an impact on their communities and use talent and resources to amplify our investments.

## Tamarack Global
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Aerospace, CleanTech, Clean Energy

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.

## She's Independent
- Type: VC Fund
- Location: Boulder, Colorado, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed
- Focus: Software, Health Care, SaaS

She's Independent Investments offers education, access, and community to its community. She's Independent Investments additionally offers advisory services and board placement to companies in its network.

## BoxGroup
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Software, Health Care, Artificial Intelligence

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

## New Stack Ventures
- Type: VC Fund
- Location: Chicago, Illinois, United States
- Relevant deals: 3
- Stages: Pre-Seed, Seed, Series A
- Focus: Software, Information Technology, Health Care

New Stack Ventures -- Early Stage Venture Capital Investments in Remarkable Founders

## PJC
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Software, Health Care, Artificial Intelligence

We know the challenges founders face because we've been there too. Thanks to our decades of thriving and surviving in recessions and booms, alike, we know the financial discipline and operational expertise it takes to build businesses that endure.

## Milkbox Partners
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Series A, Seed
- Focus: Machine Learning, Software, Health Care

Milkbox Partners, early stage investment and advisory firm, angel investors, startups, venture capital

## Backstage Capital
- Type: VC Fund
- Location: West Hollywood, California, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, Health Care, Internet

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.

## Lux Capital
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Series A, Seed, Series B
- Focus: Software, Artificial Intelligence, Health Care

Lux Capital manages over $5 billion in assets focused on founding, seed, early-stage, and growth investments at the intersection of technology and the sciences. Lux takes an active role in helping entrepreneurs build successful businesses in high-growth sectors. Its investment team has built over 20 companies from scratch. Lux's investmentstrategy ensures portfolio companies are better connected, have a deeper insight, and command industry leadership faster than their competitors.

## Chrysalix Venture Capital
- Type: VC Fund
- Location: Vancouver, British Columbia, Canada
- Relevant deals: 3
- Stages: Series B, Series A
- Focus: Energy, Manufacturing, CleanTech

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

## Anzu Partners
- Type: VC Fund
- Location: Washington, District of Columbia, United States
- Relevant deals: 3
- Stages: Series A, Series B
- Focus: Biotechnology, Software, Manufacturing

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

## Collaborative Fund
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Seed, Series A
- Focus: Software, Food and Beverage, Health Care

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

## 11.2 Capital
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Software, Information Technology, Biotechnology

In physics, 11.2 km/s is the escape velocity from Earth's gravity. They focus on emerging technologies such as AI, cybersecurity, robotics, quantum, new space, computational therapeutics, synthetic biology. ​They believe great people are leading indicators of a company's success. 11.2 Capital’s technical background, operationalexperience, and a strong network of amazing advisors and international partners particularly in Asia deliver a unique set of resources to entrepreneurs. While they are happy to help companies across the full range of early-stage company questions, areas where they concentrate include technical recruiting, partnerships (OEM and distribution partnerships for smart hardware companies, data partnerships for data-driven healthcare companies), customer introductions (CISO introductions for security companies, provider introductions for healthcare companies), and follow-on financings.

## Virta Ventures
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, FinTech, Solar

Virta Ventures is a seed stage personal investment vehicle and syndicate. Virta invests in entrepreneurs and companies building sustainable businesses that deliver positive social and environmental benefits.

## Kapor Capital
- Type: VC Fund
- Location: Oakland, California, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Education, Software, Health Care

Kapor Capital is an investment firm that invests in early-stage tech-enabled startups. They are an Oakland-based fund that understands that startup companies have the ability to transform entire industries and to address urgent social needs as they do so.

It was founded in 1999 and headquartered in Oakland, California.

## Dolby Family Ventures
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Series A, Seed, Series B
- Focus: Biotechnology, Health Care, Therapeutics

Investing in early-stage companies solving the biggest science and engineering challenges since 2014.

## Fine Structure Venture
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 3
- Stages: Series A, Series B, Seed
- Focus: Manufacturing, Energy, Clean Energy

Venture capital for disruptive scientific innovation

## Unruly Capital
- Type: VC Fund
- Location: Italy, Texas, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed
- Focus: Biotechnology, CleanTech, Manufacturing

Investing in the crazy before it becomes normal

## MCJ
- Type: VC Fund
- Location: Kasukabe, Saitama, Japan
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Renewable Energy, Energy, Software

MCJ backs extraordinary founders driving the transition of energy and industry and tackling the inevitable impacts of climate change. We discover and invest in startups rewriting industries to be cleaner, more profitable and more resilient. We strengthen our investments through the MCJ Collective — a vetted member network that connects talentedtech and industrial leaders with our portfolio and with one another. Our media platform including the Inevitable podcast spotlights key perspectives critical to our portfolio and the transition at large, reaching tens of thousands of professionals multiple times per week. Learn more at mcj.vc

## Climate Capital
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Energy, Manufacturing, Renewable Energy

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

## RVC
- Type: VC Fund
- Location: Elizabethtown, Kentucky, United States
- Relevant deals: 3
- Stages: Seed, Series A
- Focus: Health Care, CleanTech, Clean Energy

RVC is a venture capital fund located in Elizabethtown, Kentucky that primarily invests in the evolving technology and medical sectors. For the last 20 years, Dr. Robert Robbins has invested in numerous start-ups including ZirMed, which has been ranked #1 for End-to-End Revenue Cycle Management by Black Book for 7 consecutive years. ZirMed reacheda company valuation of $750 million before being acquired by Navicure to create Waystar. At Robbins Venture Capital, we look to create a bigger and brighter future with our investments.

## Lowercarbon Capital
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Seed, Series A, Series B
- Focus: Renewable Energy, Energy, Biotechnology

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

## Globespan Capital Partners
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 2
- Stages: Series B, Series C, Series D
- Focus: Software, Enterprise Software, Information Technology

Globespan is the VC firm passionate about partnering with entrepreneurs as they take their companies to market. We uniquely serve these companies, helping them establish the infrastructure required to scale their offerings. We invest in startups in the IT infrastructure, SaaS, mobile, and Internet industries. With our personal market-facingexpertise, strategic approach, and strong industry networks, we help companies realize their potential. Our track record with entrepreneurs has led us to become a leading venture capital firm across the globe.

## K Street Capital
- Type: VC Fund
- Location: Washington, District of Columbia, United States
- Relevant deals: 2
- Stages: Seed, Convertible Note
- Focus: Software, Information Technology, SaaS

K Street Capital seeks to support and accelerate startup growth with investment capital, industry expertise, mentorship, and community.

## VantagePoint Capital Partners
- Type: VC Fund
- Location: San Bruno, California, United States
- Relevant deals: 2
- Stages: Series B, Series C
- Focus: Software, Manufacturing, Internet

VantagePoint Capital Partners (formerly VantagePoint Venture Partners, until 2011) has more than $4.5 billion in capital under management and invests in the cleantech, healthcare, and IT sectors.

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