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Series B Climate tech companies in San Francisco

Companies decarbonising power, transport, agriculture, and industry. Filtered to Series B-stage companies headquartered in San Francisco.

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Built from a search like: “Top Series B Climate tech companies in San Francisco”

Ranked by current headcount across Series B Climate tech companies in San Francisco. Refreshed monthly.

  1. 1
    Patch· San Francisco, California, United States

    Patch combines technology and carbon markets expertise to help companies build and execute their carbon credit strategies from end to end — channeling capital into critical climate solutions.

    • Series B
    • 97 employees
    • Founded 2020
  2. 2
    NCX· San Francisco, California, United States

    The new nature-positive economy is booming, but it can be hard to navigate the dozens of emerging programs for landowners. Carbon, water, soil, solar projects, timber, and wildlife programs are springing up regularly with all sorts of required activities, durations, and payment schemes. What’s right for you and your land?The NCX platform puts all your options in one place. Using our satellite-based Basemap technology, we help you determine which programs might be a good fit for your unique property. You can easily compare similar programs and take the next steps to enroll in your top choice.

    • Series B
    • 78 employees
    • Founded 2010
  3. 3
    ClimateAi· San Francisco, California, United States

    The world's first enterprise climate resilience tech platform, specializing in adaptation for agriculture, food, and beverage companies.

    • Series B
    • 35 employees
    • Founded 2017
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  5. 4
    Pachama· San Francisco, California, United States

    Pachama has now been acquired by Carbon Direct. Please follow Carbon Direct for more on how Pachama’s proprietary technology, data sets, and industry relationships, will be integrated into Carbon Direct.

    • Series B
    • 34 employees
    • Founded 2018
  6. 5
    Epic Cleantec· San Francisco, California, United States

    Buildings globally use around 15% of all potable water, but very few buildings reuse that water. Epic Cleantec is on a mission to change that.Epic Cleantec (“Epic”) is a full-service water technology company that deploys onsite water treatment and reuse systems into individual buildings or groups of buildings, converting building wastewater (greywater, blackwater, stormwater, rainwater) into highly purified treated water for non-potable applications like toilet flushing, irrigation, cooling towers, and laundry.Occupying a small footprint within a project, the Epic approach can reuse up to 95% of a building’s wastewater, lowering water and wastewater costs by up to six figures annually. Unique to Epic is that our systems can also incorporate full resource recovery by converting wastewater organics into carbon-rich soil products for landscaping and gardening, and recovering wastewater heat energy to preheat the potable water supply, reducing a project’s hot water energy needs by up to 30%. Our innovative approach can help earn up to 24 LEED points.Epic provides a one-stop-shop for design, engineering, permitting, construction support, and ongoing operations. Our team has decades of experience across the wastewater and built environment value chain, with expertise in wastewater treatment and solids handling technology, project financing, policy, and operations.Epic has been featured widely in prominent publications including CNBC, CNN, The Guardian, The New York Times, CBS, Bloomberg, NBC Bay Area, ABC7, TechCrunch, and more. Epic has received many accolades, including in the no.1 spot on Fast Company’s Most Innovative Companies list in the small company category. In 2022, Epic’s OneWaterTM system was named a TIME Best Invention of the Year.

    • Series B
    • 33 employees
    • Founded 2015

Find engineers at Series B Climate tech companies in San Francisco

Searching for “engineers at top Series B Climate tech companies in San Francisco” surfaces this slice of the market. The list above ranks Climate tech companies headquartered in San Francisco whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 7 matching companies in Refolk’s index, this is a tight read on where the Climate tech talent in San Francisco is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series B, Climate tech, in San Francisco - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Climate tech’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Series B Climate tech companies in San Francisco hiring” or “founders of Series B Climate tech companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled Climate tech companies headquartered in San Francisco whose latest disclosed funding round is Series B from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Sat, 24 Oct 2026 12:06:48 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.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Sat, 24 Oct 2026 12:06:48 GMT. For a list built against the index as it stands today, sign up and run the search live.

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