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US VCs investing in climate

A curated list of active US VCs investing in climate startups.

by Tzakhi Freedman · November 18, 2025


Today, we selected 10 active USA VCs from our database, investing in climate startups.

Our team reviewed, checked, and enriched the list with the necessary data.

Here goes:

  • Acorn Innovestments, Based in Durham, Acorn Innovestments is a seed-stage venture capital firm investing in advanced materials companies that address environmental challenges. The firm backs early-stage startups manufacturing products designed to solve climate-related problems and reduce ecological impact.
  • Amasia, Headquartered in Burlingame, Amasia is a global venture capital firm focused on sustainability and climate. The firm invests from pre-seed through Series A, supporting mission-driven founders developing scalable solutions to environmental challenges.
  • Avesta Fund, Located in Denver, Avesta Fund is a seed-stage venture capital firm focused on climate change and inequality. The firm prioritizes diverse founders building impactful companies at the intersection of sustainability, inclusion, and social progress.
  • Azolla Ventures, Based in Cambridge, Azolla Ventures is an early-stage investor in climate breakthroughs. The firm backs pre-seed to Series A companies with transformative technologies capable of averting catastrophic climate change.
  • Clean Energy Ventures, Headquartered in Boston, Clean Energy Ventures invests in innovative startups reshaping how we produce and consume energy. The firm funds capital-efficient technologies in climate, energy, renewables, and SaaS that can significantly cut emissions by 2050.
  • Ecs Capital Partners, Based in Bar Harbor, ECS Capital Partners invests in seed and growth-stage technology companies driving social, human, and environmental progress. The firm maintains a diversified portfolio and collaborates globally to generate strong returns and measurable impact.
  • Gigascale Capital, Located in Palo Alto, Gigascale Capital is a climate-focused venture capital firm investing from pre-seed through Series A. The firm partners with founders and operators in science and technology to scale businesses fighting climate change.
  • Groundswell Ventures, Headquartered in Denver, Groundswell Ventures invests in companies addressing pressing climate and sustainability challenges. The firm supports innovative founders building technologies that drive environmental resilience and long-term value.
  • Helios Climate Ventures, Based in Aspen, Helios Climate Ventures invests in breakthrough climate technologies. The firm focuses on scalable solutions that align financial success with rapid emissions reduction and measurable climate impact.
  • Necessary Ventures, Located in San Francisco, Necessary Ventures is a venture capital firm funding solutions to humanity’s toughest challenges. The firm invests from pre-seed through Series A in companies addressing climate, health, and social inequities.

We have also put together a list of 100 San Francisco VCs A round.

Our premium subscribers can access the list with all of the necessary data, including:

Name, website, HQ location, LinkedIn company page, description/thesis, preferred stages, preferred domains, and contact email.

To view the full premium list, upgrade now at a no-brainer price:

That’s all for today. Have a great day!

Tzakhi

PS: Want more? Download our full startup investor database with 16,000+ investors. Get it now→

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