# Top 50 CleanTech Startup Investors in United States in May 2026

## Third Sphere
- Type: VC Fund
- Location: Brooklyn, New York, United States
- Relevant deals: 10
- 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.

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

Khosla Ventures invests in companies that are bold, early and impactful. The firm was started in 2004 by Vinod Khosla, co-founder of Sun Microsystems, to provide venture assistance to entrepreneurs. Headquartered in Menlo Park, Calif., Khosla Ventures invests in a range of areas including AI, climate, sustainability, enterprise, consumer, fintech,digital health, medtech and diagnostics, therapeutics and frontier technology.

## Valo Ventures
- Type: VC Fund
- Location: Palo Alto, California, United States
- Relevant deals: 7
- Stages: Series A, Series B, Seed
- Focus: SaaS, Software, Manufacturing

Valo Ventures is a thesis-driven venture capital firm investing in North America and Europe. Our mission is "investing for a brighter future" and we do this by focusing on four catalyzing megatrends: climate change, circular economy, autonomy and empowered people. We identify and support entrepreneurs who are applying digital technologiesto create long term economic, environmental and social value. Learn more at www.valoventures.org.

## Collaborative Fund
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 7
- Stages: Seed, Series A
- Focus: Food and Beverage, Health Care, Software

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

## Breakthrough Energy Ventures
- Type: VC Fund
- Location: Paris, Ile-de-France, France
- Relevant deals: 6
- 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.

## Energy Impact Partners
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 6
- Stages: Series A, Series B, Series C
- Focus: Software, Energy, Renewable Energy

Energy Impact Partners (EIP) is a collaborative strategic investment firm that invests in companies optimizing energy consumption and improving sustainable energy generation. Through close collaboration with its strategic investor base, EIP seeks to bring the best companies, buying power and vision in the industry to bear on the emerging energy landscape.

## Stout Street Capital
- Type: VC Fund
- Location: Denver, Colorado, United States
- Relevant deals: 5
- Stages: Seed, Series A
- Focus: Software, SaaS, Enterprise Software

Colorado Venture capital firm with a focus on early-stage technology companies innovating in software, fin tech, advanced materials, robotics, and AI.

## Social Capital
- Type: VC Fund
- Location: Palo Alto, California, United States
- Relevant deals: 5
- Stages: Seed, Series A, Series B
- Focus: Software, FinTech, SaaS

At Social Capital, we make big bets on transformational ideas, technology, and people.

## Climate Capital
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 5
- Stages: Seed, Pre-Seed, Series A
- Focus: Sustainability, Manufacturing, Biotechnology

Climate Capital is an investment firm that supports companies that directly or indirectly reduce global greenhouse gas emissions.

## Shell Ventures
- Type: VC Fund
- Location: Rijswijk, Zuid-Holland, The Netherlands
- Relevant deals: 5
- Stages: Series A, Series B
- Focus: Energy, Renewable Energy, Software

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

## Kleiner Perkins
- Type: VC Fund
- Location: Menlo Park, California, United States
- Relevant deals: 5
- Stages: Series B, Series A, Series C
- Focus: Software, Health Care, Information Technology

Kleiner Perkins is an American venture capital firm headquartered on Sand Hill Road in Menlo Park in Silicon Valley.

## Powerhouse Ventures
- Type: VC Fund
- Location: Oakland, California, United States
- Relevant deals: 5
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, Energy, Solar

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

## Blackhorn Ventures
- Type: VC Fund
- Location: Boulder, Colorado, United States
- Relevant deals: 5
- Stages: Seed, Series A, Series B
- Focus: Software, Information Technology, Artificial Intelligence

Blackhorn Ventures is a collective of experts that invests in companies that are redefining resource efficiency in industrial sectors.

## SaaS Ventures
- Type: VC Fund
- Location: Washington, District of Columbia, United States
- Relevant deals: 5
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, Information Technology, SaaS

We are enterprise software experts. We look to co-invest with strong leads, bringing our network of coinvestors and next round investors as well as enterprise software expertise to add value. We see ourselves as partners who can fill out a round quickly and be a positive influence, and non-competitive as we don't lead or take significantstakes in our portfolio companies. We generally write a small check into rounds of $750k-$3M that are mostly full, being low pain-in-the-ass to entrepreneurs compared to relatively high value add. Having been entrepreneurs, we know that's the most important part.While we'll invest anywhere in the US, we love "second tier markets" that can still support major exits but attract relatively less venture funding: Chicago, Toronto, DC, Baltimore, Atlanta, etc etc!

## Chrysalix Venture Capital
- Type: VC Fund
- Location: Vancouver, British Columbia, Canada
- Relevant deals: 5
- 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.

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

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

## Clean Energy Venture Group
- Type: VC Fund
- Location: Brookline, Massachusetts, United States
- Relevant deals: 4
- Stages: Series A, Seed
- 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.

## Central Texas Angel Network
- Type: VC Fund
- Location: Austin, Texas, United States
- Relevant deals: 4
- Stages: Seed, Series A
- Focus: Software, Health Care, Biotechnology

The Central Texas Angel Network (CTAN) is dedicated to providing quality early-stage investment opportunities for accredited Central Texas angel investors and to assisting entrepreneurs and early-stage growth companies by being a quality source of funding, information, networking, advisors and educational resources.

## Climate Pledge Fund
- Type: VC Fund
- Relevant deals: 4
- Stages: Series A, Series B
- Focus: CleanTech, Energy, Manufacturing

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.

## SE Ventures
- Type: VC Fund
- Location: Menlo Park, California, United States
- Relevant deals: 4
- Stages: Series B, Series A
- Focus: Energy, Manufacturing, Internet of Things

SE Ventures acts as a growth engine for pioneering founders who can benefit from the global customer base and domain expertise of Schneider Electric.

## Firelake Capital Management
- Type: VC Fund
- Location: Palo Alto, California, United States
- Relevant deals: 4
- Stages: Series A, Series C, Series B
- Focus: Solar, Energy, Manufacturing

Firelake Capital Management is a fund with a "hybrid" portfolio of private and public investments in information technology, energy technology, and material science. The public holdings focus on technological innovation and scalability for self-funding. The private companies develop "Edge technologies" to meet futurefundamental needs.

## DCVC
- Type: VC Fund
- Location: San Francisco, California, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Software, Artificial Intelligence, Health Care

We are deep tech venture capital.

## Ideaship
- Type: VC Fund
- Location: Portland, Oregon, United States
- Relevant deals: 4
- Stages: Seed, Pre-Seed
- Focus: Software, Health Care, Information Technology

Ideaship maximizes the potential of your enterprise value in relation to fundraising, go-to-market, and liquidity.

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

City Light is a venture capital firm that invest in impactful companies in the areas of education, safety and care, and the environment.

## Cottonwood Technology Fund
- Type: VC Fund
- Location: Santa Fe, New Mexico, United States
- Relevant deals: 4
- Stages: Series A, Series B, Seed
- Focus: Manufacturing, Biotechnology, Health Care

Cottonwood Technology Fund is an early-stage venture capital fund that primarily invests in technology-driven companies.

## Spero Ventures
- Type: VC Fund
- Location: Redwood City, California, United States
- Relevant deals: 4
- Stages: Series A, Seed
- Focus: Software, Artificial Intelligence, Education

Spero Ventures makes venture investments in the things that make life worth living - wellbeing; sustainability; learning, work, and play.

## RockPort Capital
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 4
- Stages: Series C, Series B, Series A
- Focus: Energy, Manufacturing, Software

RockPort Capital is a multi-stage venture capital firm that invests in the areas of alternative and traditional energy, mobility, and sustainability. For more than a decade RockPort has partnered with entrepreneurs to foster growth and create value in a broad range of industrial and consumer facing companies whose technologies and products provideinnovative solutions to significant worldwide markets. RockPort has a collaborative approach to investing, deep domain expertise, and insights into all aspects of energy and cleantech. With offices in Boston and Menlo Park, RockPort is globally recognized as being among the largest and most established energy-focused venture capital firms.

## ONE WORLD Impact Investments LLC
- Type: VC Fund
- Location: Palo Alto, California, United States
- Relevant deals: 4
- Stages: Seed, Series A, Series B
- Focus: Education, Health Care, Software

ONE WORLD provides training & investment capital to social impact enterprises. The mission of ONE WORLD is to scale social impact and improve the lives of individuals globally. In January 2017, ONE WORLD launched its impact seed fund focused on early-stage for-profit companies that are addressing social or environmental challenges. As ofJanuary 2022, the portfolio has 25 active investments, has participated in 15 follow-on rounds of financing, and has had 2 exits.

## Alante Capital
- Type: VC Fund
- Location: Santa Barbara, California, United States
- Relevant deals: 3
- Stages: Seed, Series A, Pre-Seed
- Focus: Biotechnology, Recycling, Advanced Materials

    Alante Capital   Investing in the Future of  Sustainable Apparel   Learn More

## Ground Up Ventures
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, E-Commerce, Artificial Intelligence

Ground Up Ventures is an early stage venture capital firm investing in pre-seed and seed stage startups in the United States and Israel. 

## Rockies Venture Club
- Type: VC Fund
- Location: Denver, Colorado, United States
- Relevant deals: 3
- Stages: Seed, Series A
- Focus: Software, Health Care, Biotechnology

Connecting Entrepreneurs and Investors Since 1985.

## Building Ventures
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 3
- Stages: Series A, Seed, Series B
- Focus: Software, Construction, Real Estate

Building Ventures is a venture capital firm based in Boston, MA. We partner with Built Environment entrepreneurs and early-stage startups.

## Saint-Gobain NOVA
- Type: VC Fund
- Location: Courbevoie, Ile-de-France, France
- Relevant deals: 3
- Stages: Seed, Series B
- Focus: Industrial Manufacturing, Energy, Software

Saint-Gobain NOVA is the ventures arm of Saint‑Gobain.

## Horizons Ventures
- Type: VC Fund
- Location: Hong Kong, Hong Kong Island, Hong Kong
- Relevant deals: 3
- Stages: Series A, Series B, Seed
- Focus: Biotechnology, Artificial Intelligence, Software

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

## Clean Energy Ventures
- Type: VC Fund
- Location: Boston, Massachusetts, United States
- Relevant deals: 3
- Stages: Series A, Seed, Convertible Note
- Focus: Energy, Manufacturing, Renewable Energy

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

## David E. Weekly
- Type: Angel
- Location: Redwood City, California, United States
- Relevant deals: 3
- Stages: Seed, Angel, Pre-Seed
- Focus: Robotics, Drones, Aerospace

David E. Weekly is the Founder and CEO of Medcorder and he was the Founding Director of Hacker Dojo. He has a bachelor's degree in Computer Science from Stanford University.

## Exelon Corporation
- Type: VC Fund
- Location: Chicago, Illinois, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, CleanTech, Clean Energy

Exelon Corporation is an American energy producer, trader, and distributor. The company provides services for energy generation businesses in the United States.The company owns, contracts, and invests in electric generating facilities such as nuclear, fossil, and hydroelectric generation facilities, as well as wind and solar facilities. It isalso involved in the wholesale and retail customer supply of electric and natural gas products and services including renewable energy products, risk management services, natural gas exploration, and production activities.In addition, the company is engaged in the purchase and regulated retail sale of electricity and the provision of distribution and transmission services in northern Illinois, southeastern Pennsylvania, and central Maryland. It is also involved in the purchase and regulated retail sale of natural gases and the provision of distribution services in the Pennsylvania counties surrounding the City of Philadelphia, as well as in central Maryland including the City of Baltimore.Exelon Corporation operates through nine segments: Mid-Atlantic, Midwest, New England, New York, ERCOT, other regions, ComEd, PECO, and BGE. It sells electricity, natural gases, and other related products and solutions to various customers including distribution utilities, municipalities, and cooperatives, as well as to commercial, industrial, governmental, and residential customers.Founded in 1887, Exelon Corporation is headquartered in Chicago, Illinois.

## Austin Ventures
- Type: VC Fund
- Location: Austin, Texas, United States
- Relevant deals: 3
- 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.

## Pinnacle Ventures
- Type: VC Fund
- Location: Menlo Park, California, United States
- Relevant deals: 3
- Stages: Series C, Series B, Series D
- Focus: Software, Health Care, Biotechnology

Pinnacle Ventures Home Page

## AP Ventures
- Type: VC Fund
- Location: London, England, United Kingdom
- Relevant deals: 3
- Stages: Seed, Series A
- Focus: Energy, Renewable Energy, Oil and Gas

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.

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

Dr. Robert E. Robbins is the CEO and founder of the Robbins Venture Capital group. Robbins Venture Capital group 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. Robbins has invested in numerous start-ups including ZirMed, which has beenranked #1 for End-to-End Revenue Cycle Management by Black Book for 7 consecutive years. ZirMed reached a 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.

## Oak Investment Partners
- Type: VC Fund
- Location: Greenwich, Connecticut, United States
- Relevant deals: 3
- Stages: Series B, Series C
- Focus: Software, Internet, Telecommunications

OUR THREE STEP APPROACHResearchAnalysts compile market research across various marketing segments.ReportThe research is reported to our Senior Advisors.DirectThis information is edited into simple terms an average investor can understand. Recent Blogs. What Our Readers Say . Patrick MartinsCEO Simply love Oak Investing! Marissa JonesManager Knowledgeable, Highly recommended. Clara ParkerCFO Thank you for the awesome recommendations.

## Active Impact Investments
- Type: VC Fund
- Location: North Vancouver, British Columbia, Canada
- Relevant deals: 3
- Stages: Seed, Series A, Pre-Seed
- Focus: Software, SaaS, CleanTech

We support environmental resiliency through profitable investment. We provide capital and talent to accelerate the growth of early-stage climate tech ventures catalyzing the transition from finite to infinite sources of energy, food, water & products.

## Jericho Energy Ventures
- Type: VC Fund
- Location: Vancouver, British Columbia, Canada
- Relevant deals: 3
- Stages: Series A
- Focus: CleanTech, GreenTech, Clean Energy

Jericho Energy Ventures is focused on advancing the low-carbon energy transition with investments in hydrogen technologies, energy storage, carbon capture and new energy systems.

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

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

## Wonder Ventures
- Type: VC Fund
- Location: Santa Monica, California, United States
- Relevant deals: 3
- Stages: Seed, Pre-Seed, Series A
- Focus: Software, Health Care, Internet

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.

## Sun Mountain Capital
- Type: VC Fund
- Location: Santa Fe, New Mexico, United States
- Relevant deals: 3
- Stages: Series A, Series B, Series C
- Focus: Medical, Health Care, Manufacturing

Sun Mountain Capital is an asset management firm specializing in venture capital and private credit through direct and multi-manager investments.

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

Launch NY is a nonprofit venture development organization in Upstate NY. We provide pro bono mentoring and access to risk capital for high-growth startups.

## Hess Corporation
- Type: VC Fund
- Location: New York, New York, United States
- Relevant deals: 3
- 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.

## Good Growth Capital
- Type: VC Fund
- Location: Charleston, South Carolina, United States
- Relevant deals: 3
- Stages: Seed, Convertible Note, Series A
- Focus: Health Care, Information Technology, Software

Good Growth Capital specializes in finding, cultivating, and assessing complex science and deep-tech start-ups. GGC invests in seed-stage and Series A deals through the General Fund family and in pre-seed and seed-stage companies through the Infinite Corridor Fund, which primarily targets MIT-affiliated and transformative science start-ups. GGC ismajority women- and minority-owned and is uniquely positioned geographically in both the Southeast and New England.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co