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Top Climate tech companies in New York

Companies decarbonising power, transport, agriculture, and industry. Filtered to companies headquartered in New York.

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Built from a search like: Top Climate tech companies in New York

Ranked by current headcount across Climate tech companies headquartered in New York. Refreshed daily.

  1. 1
    GE Power· Schenectady, New York, United States

    This channel is no longer active. GE Power became part of GE Vernova's Power segment in April 2024.

    • 17.1k employees
    • Founded 1998
  2. 2
    NYC Department of Environmental Protection (NYC DEP)· Queens, New York, United States

    The New York City Department of Environmental Protection (DEP) is a city agency of nearly 6,000 employees whose primary responsibility is to manage the city’s water supply. DEP distributes more than one billion gallons of clean drinking water each day to nine million New Yorkers and treats over a billion gallons of wastewater daily at fourteen treatment facilities within the five boroughs. As the city agency responsible for New York City’s environment, DEP also regulates air quality, hazardous waste, and noise pollution.Visit www.nyc.gov/dep/careers to explore our career opportunities!

    • 3.1k employees
  3. 3
    Hazen and Sawyer· New York, New York, United States

    As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere. By fostering a culture rich with collaboration, opportunity, and support, we've retained a small-firm feel even as we've expanded to be the water industry's largest firm solely devoted to all things water.Our focus on water prepares us to handle the exceptional challenges facing the industry: adapting to new regulations and changes in supply or demand; targeting stretched budgets for optimal ROI; developing resilience to drought, floods, severe storms, and wildfires; charting a course into the digital age; and much, much more.Our focus on water also makes us home to many of the world’s top water experts and rising talents, each seeking a challenging and rewarding career while making an important contribution to the communities in which we work.If you have a water challenge, Hazen and Sawyer has your solution.Visit our website to view a full list of all Hazen office locations across the country and around the world.

    • Grant
    • 2.3k employees
    • Founded 1951
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  5. 4
    NYS Department of Environmental Conservation· Albany, New York, United States

    The dedicated professionals of New York State’s Department of Environmental Conservation (DEC) are passionate about the outdoors and protecting the environment. Agency staff protect our air and water, fish and wildlife, and more than 5 million treasured acres of public land for outdoor recreation. Educating the public, especially youth, about caring for the environment and natural resources is another critical part of DEC’s mission. Whether it’s setting game seasons, enforcing clean air laws, fighting wildland fires, or issuing environmental permits to factories, if it has to do with protecting the environment, DEC is there.DEC's headquarters is in Albany, the state capitol. Staff in nine regional offices serve communities throughout the state. Find a regional office near you at https://dec.ny.gov/about/contact-us/statewide-office-information. See www.dec.ny.gov for more information about what we do and where the DEC office closest to you is located. Opportunities for a rewarding career at DEC are available. Visit our employment page to learn about civil service exams and other exciting career options.For our Terms of Participation for Social Media: https://dec.ny.gov/about/website-usage-and-policies/social-media

    • Grant
    • 2.3k employees
    • Founded 1970
  6. 5
    SavATree· Bedford Hills, New York, United States

    SavATree is a full-service tree, shrub, and lawn care company specializing in green options for landscape care. Our winning formula combines cutting edge technology, patented ingredients with customer passion - delivered by the best and brightest "Green Team" in the industry!We are a values-driven organization built on teamwork, integrity, respect, and a relentless commitment to making a positive impact. When you join us, you’ll find a collaborative, competitive, and caring environment where your contributions matter. As we like to say: When you work here, you thrive here.

    • Private equity
    • 1.1k employees
    • Founded 1985

Find engineers at Climate tech companies in New York

New York has long been a hub for Climate tech, and the list above ranks the largest Climate tech companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 529 matching companies in Refolk’s index, this is a good map of where the Climate tech talent in New York lives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest Climate tech companies in New York tend to be the gravitational centres for specialised talent - senior engineers, ML researchers, applied scientists, designers - while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for Climate tech engineers in New York hiring senior staff” or “founders of Climate tech companies in New York who left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled Climate tech companies headquartered in New York from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 16:57:00 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 16:57:00 GMT.

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