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    Top Cleantech Accelerators & VCs (2026)

    Browse cleantech startup programs and VCs with updated offers, deadlines, and funding for 2026.

    Updated Mar 2026

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    Found 33 investors & programs.

    Collaborative Fund logo

    Collaborative Fund

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

    Collaborative Fund: Collaborative Fund is a leading source of capital for entrepreneurs pushing the world forward. Collaborative Fund backs entrepreneurs pushing the world forward.. Venture Capital Firm, Micro VC, Investment Fund. Located in New York, NY, SF Bay Area/Silicon Valley, San Francisco, CA, USA, United States, North America. $500K - $2.5M available.
    Application open
    $500K - $2.5M
    Venture Capital Firm
    Micro VC
    Investment Fund
    imec.istart logo

    imec.istart

    The leading accelerator for tech startups.

    imec.istart: The leading accelerator for tech startups.. Entrepreneurship Program, Growth Program, Accelerator, Mentorship Program, Co-working Space, Incubator, Startup Network, Venture Capital Firm, Micro VC. Located in Leuven, Belgium, Europe. €50K for 6% for 6% available.
    Application open
    €50K for 6% for 6%
    Entrepreneurship Program
    Growth Program
    Accelerator
    Mentorship Program
    Co-working Space
    Incubator
    Startup Network
    Venture Capital Firm
    Micro VC
    Chicago Ventures logo

    Chicago Ventures

    An early-stage venture capital fund, investing in exceptional entrepreneurs in the Central US. WE GIVE FOUNDERS BETTER ODDS.

    Chicago Ventures: An early-stage venture capital fund, investing in exceptional entrepreneurs in the Central US. WE GIVE FOUNDERS BETTER ODDS.. Venture Capital Firm, Investment Fund. Located in Chicago, Illinois, USA, United States, North America, Europe, Asia.
    Venture Capital Firm
    Investment Fund
    Pangaea Ventures logo

    Pangaea Ventures

    Pangaea Ventures invests in companies solving fundamental problems in the world with advanced materials and hard technology; Impact Investor

    Pangaea Ventures: Pangaea Ventures invests in companies solving fundamental problems in the world with advanced materials and hard technology; Impact Investor. Venture Capital Firm. Located in Vancouver, Phoenix, Canada, North America, Europe. $2M - $7M available.
    Application open
    $2M - $7M
    Venture Capital Firm
    Brooklyn Bridge Ventures logo

    Brooklyn Bridge Ventures

    A seed stage investment fund based in Brooklyn NY Brooklyn’s first early stage venture fund

    Brooklyn Bridge Ventures: A seed stage investment fund based in Brooklyn NY Brooklyn’s first early stage venture fund. Venture Capital Firm, Micro VC, Investment Fund. Located in Brooklyn, NY, New York, NY, United States, USA, North America.
    Venture Capital Firm
    Micro VC
    Investment Fund
    Talis Capital logo

    Talis Capital

    We help founders who see the future differently build it. Talis Capital invests with high conviction at Seed & Series A across Europe and US.

    Talis Capital: We help founders who see the future differently build it. Talis Capital invests with high conviction at Seed & Series A across Europe and US.. Venture Capital Firm. Located in London, United Kingdom, Europe, North America, South America, MENA, Asia.
    Venture Capital Firm
    Fuel Ventures logo

    Fuel Ventures

    Created by entrepreneurs for entrepreneurs. The Fuel Ventures Funds invest between £150k & £3m into tech companies with early commercial traction

    Fuel Ventures: Created by entrepreneurs for entrepreneurs. The Fuel Ventures Funds invest between £150k & £3m into tech companies with early commercial traction. Venture Capital Firm. Located in London, United Kingdom, Europe, North America.
    Venture Capital Firm
    Blue Collective logo

    Blue Collective

    we believe phenomenal people build phenomenal businesses

    Blue Collective: we believe phenomenal people build phenomenal businesses. Investment Fund. Located in New York, NY, Brooklyn, NY.
    Investment Fund
    Bethnal Green Ventures logo

    Bethnal Green Ventures

    Europe’s leading early-stage tech for good VC

    Bethnal Green Ventures: Europe’s leading early-stage tech for good VC. Investment Fund, Accelerator, Venture Capital Firm, Venture Capital. Located in London, United Kingdom, Europe, North America, Middle East. £30K for 7% available.
    Application open
    £30K for 7%
    Can Lead
    Investment Fund
    Accelerator
    Venture Capital Firm
    Venture Capital
    Tech4Trust logo

    Tech4Trust

    Tech4Trust Season 4 Swiss 6-month acceleration program for promising startups in the fields of digital trust and cybersecurity

    Tech4Trust: Tech4Trust Season 4 Swiss 6-month acceleration program for promising startups in the fields of digital trust and cybersecurity. Growth Program, Mentorship Program, Entrepreneurship Program, Venture Capital Firm, Accelerator. Located in Switzerland, Europe.
    Growth Program
    Mentorship Program
    Entrepreneurship Program
    Venture Capital Firm
    Accelerator
    Techstars Sustainability Paris logo

    Techstars Sustainability Paris

    Techstars Sustainability Paris accelerator invests in early stage high-growth startups looking to build a better future thanks to technology.

    Techstars Sustainability Paris: Techstars Sustainability Paris accelerator invests in early stage high-growth startups looking to build a better future thanks to technology.. Accelerator, Venture Capital Firm, Startup Network, Mentorship Program. Located in Worldwide. $220K for 6% available.
    Application open
    $220K for 6%
    Accelerator
    Venture Capital Firm
    Startup Network
    Mentorship Program
    Praetura Ventures logo

    Praetura Ventures

    Praetura Ventures has been supporting entrepreneurs with more than money since 2011. Click to find out more about how we can help businesses and investors.

    Praetura Ventures: Praetura Ventures has been supporting entrepreneurs with more than money since 2011. Click to find out more about how we can help businesses and investors.. Venture Capital Firm. Located in Manchester, United Kingdom, Europe, North America.
    Venture Capital Firm
    468 Capital logo

    468 Capital

    468 Capital -

    468 Capital: 468 Capital -. Investment Fund, Venture Capital. Located in San Francisco, CA.
    Can Lead
    Investment Fund
    Venture Capital
    National Grid Partners logo

    National Grid Partners

    Powering the things you love

    National Grid Partners: Powering the things you love. Corporate VC. Located in London, Los Gatos, United Kingdom, United States, North America. $5M - $7M available.
    Application open
    $5M - $7M
    Can Lead
    Corporate VC
    The Yield Lab logo

    The Yield Lab

    Enabling entrepreneurs to sustainably revolutionize agrifood systems, globally.

    The Yield Lab: Enabling entrepreneurs to sustainably revolutionize agrifood systems, globally.. Venture Capital Firm, Accelerator. Located in St. Louis, MO, Missouri, United States, North America.
    Venture Capital Firm
    Accelerator
    Freigeist logo

    Freigeist

    Unleashing European Tech Founders

    Freigeist: Unleashing European Tech Founders. Venture Capital Firm. Located in Bonn, Nordrhein-Westfalen, Germany, Europe. €500K - €2m for 20% available.
    Application open
    €500K - €2m for 20%
    Venture Capital Firm
    NXT: Commercial Innovation Programme logo

    NXT: Commercial Innovation Programme

    InsurTech Innovation & Growth through Collaboration 🚀🤝

    NXT: Commercial Innovation Programme: InsurTech Innovation & Growth through Collaboration 🚀🤝. Accelerator, Incubator, Entrepreneurship Program. Located in Munich, Germany, Europe, North America, MENA, Worldwide. Sessions with insurers available.
    Application open
    Sessions with insurers
    Accelerator
    Incubator
    Entrepreneurship Program
    Yield Lab logo

    Yield Lab

    Provides agriculture technology companies with funding, training, mentorship, and networking opportunities.

    Yield Lab: Provides agriculture technology companies with funding, training, mentorship, and networking opportunities.. Accelerator, Venture Capital Firm. Located in St. Louis, MO, Missouri, United States, North America.
    Accelerator
    Venture Capital Firm
    Trust Ventures logo

    Trust Ventures

    Guiding startups through uncharted territory.

    Trust Ventures: Guiding startups through uncharted territory.. Investment Fund. Located in Austin, TX, Texas.
    Investment Fund
    The Yield Lab Europe logo

    The Yield Lab Europe

    Enabling entrepreneurs to sustainably revolutionise agrifood systems

    The Yield Lab Europe: Enabling entrepreneurs to sustainably revolutionise agrifood systems. Accelerator. Located in Galway, Ireland, Europe. €100K available.
    Application open
    €100K
    Accelerator
    Greentech Europe 2022 Village Capital logo

    Greentech Europe 2022 Village Capital

    Supporting gender-diverse greentech innovation in Europe

    Greentech Europe 2022 Village Capital: Supporting gender-diverse greentech innovation in Europe. Entrepreneurship Program. Located in Europe. Free + $150K of grant available available.
    Application open
    Free + $150K of grant available
    Entrepreneurship Program
    Summit Works logo

    Summit Works

    An Early-stage Venture Capital Fund

    Summit Works: An Early-stage Venture Capital Fund. Venture Capital Firm, Accelerator, Incubator. $100K - $1M available.
    Application open
    $100K - $1M
    Venture Capital Firm
    Accelerator
    Incubator
    Third Derivative logo

    Third Derivative

    Accelerate the clean future. Together.

    Third Derivative: Accelerate the clean future. Together.. Accelerator. Located in United States, North America. $100k note, 20% discount via fund - available.
    Application open
    $100k note, 20% discount via fund -
    Accelerator
    OBRATORI logo

    OBRATORI

    Exploring disruptive ideas in the men wellbeing and our Planet

    OBRATORI: Exploring disruptive ideas in the men wellbeing and our Planet. Venture Capital Firm, Accelerator, Co-working Space, Startup Studio, Corporate VC. Located in Marseille, Provence-Alpes-Cote d'Azur, France, Europe, Middle East.
    Can Lead
    Venture Capital Firm
    Accelerator
    Co-working Space
    Startup Studio
    Corporate VC
    Square One Startup School logo

    Square One Startup School

    Where startup founders come to prep for their first product, customer and investment

    Square One Startup School: Where startup founders come to prep for their first product, customer and investment. Accelerator. Located in Worldwide.
    Application open
    Accelerator
    Forest Valley Sandbox Program logo

    Forest Valley Sandbox Program

    At Forest Valley, we connect emerging climate tech solutions to investors, corporates, and the public sector

    Forest Valley Sandbox Program: At Forest Valley, we connect emerging climate tech solutions to investors, corporates, and the public sector. Accelerator, Mentorship Program. Located in Europe.
    Application open
    Accelerator
    Mentorship Program
    Chloe Capital logo

    Chloe Capital

    Chloe Capital is a seed-stage venture capital firm investing in women-led innovation companies advancing entrepreneurship and closing the gender and diversity gap.

    Chloe Capital: Chloe Capital is a seed-stage venture capital firm investing in women-led innovation companies advancing entrepreneurship and closing the gender and diversity gap.. Venture Capital Firm, Accelerator, Training Program, Incubator, accelerator. Located in Ithaca, New York, NY, United States, North America.
    Venture Capital Firm
    Accelerator
    Training Program
    Incubator, accelerator
    Just Business logo

    Just Business

    Created in 2006 Just Business began by cultivating the non-profit organisation Not For Sale in their fight to end human trafficking and labor exploitation and has continued to invest in and help develop forward-thinking companies dedicated to championing social change.

    Just Business: Created in 2006 Just Business began by cultivating the non-profit organisation Not For Sale in their fight to end human trafficking and labor exploitation and has continued to invest in and help develop forward-thinking companies dedicated to championing social change.. Venture Capital Firm, Incubator, accelerator. Located in San Francisco, CA, United States, North America.
    Venture Capital Firm
    Incubator, accelerator
    Saola Ventures logo

    Saola Ventures

    Saola Ventures is a strategic investment and advisory firm

    Saola Ventures: Saola Ventures is a strategic investment and advisory firm. Venture Capital Firm. Located in United Kingdom, Europe, North America.
    Venture Capital Firm
    Impactivs logo

    Impactivs

    Actionable expertise to help impact entrepreneurs take their ideas to market.

    Impactivs: Actionable expertise to help impact entrepreneurs take their ideas to market.. Mentorship Program.
    Application open
    Mentorship Program
    FAROS Blue Economy Accelerator logo

    FAROS Blue Economy Accelerator

    Faros is a major Accelerator based in Taranto dedicated to the most innovative and disruptive blue economy startups.

    FAROS Blue Economy Accelerator: Faros is a major Accelerator based in Taranto dedicated to the most innovative and disruptive blue economy startups.. Accelerator.
    Accelerator
    MakeUp Hardtech Innovation logo

    MakeUp Hardtech Innovation

    We want to MakeUp for all the innovations that didn’t happen in the past.

    MakeUp Hardtech Innovation: We want to MakeUp for all the innovations that didn’t happen in the past.. Co-working Space, Entrepreneurship Program, Accelerator, Incubator, Startup Network, Mentorship Program. Located in Berlin, Germany, Europe. Up to €96300 available.
    Application open
    Up to €96300
    Co-working Space
    Entrepreneurship Program
    Accelerator
    Incubator
    Startup Network
    Mentorship Program
    Venture Fellows Program logo

    Venture Fellows Program

    Do you have an idea to make your community more resilient, equitable, & sustainable? The Venture Fellows program is a 9-month hands-on experience – we invest in diverse innovators to pilot good ideas that help communities become more resilient in response to the impacts of climate change.

    Venture Fellows Program: Do you have an idea to make your community more resilient, equitable, & sustainable? The Venture Fellows program is a 9-month hands-on experience – we invest in diverse innovators to pilot good ideas that help communities become more resilient in response to the impacts of climate change.. Accelerator. Located in Los Angeles, CA, Miami, United States, North America.
    Application open
    Accelerator

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    FAQs about Cleantech funding

    Best Cleantech accelerators/VCs in 2026?

    See the curated list below; filter by open deadlines and offer terms.

    Which programs are open right now?

    Check the “Open now” section for future deadlines and active cohorts.

    What are typical funding/equity terms?

    Offers vary by program; see each card for check size, equity, or equity-free notes.

    Are there remote options?

    Many programs support remote; confirm on each card’s details (remote flag or location).