Climate Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2024

April 2024

Browse 16 of the top Climate startups funded by Y Combinator. Headquartered in the San Francisco Bay Area, these are some of the hottest and fastest-growing startups.

We also have a Startup Directory where you can search through over 5,000 companies.

  • Pachama
    Pachama (w2019)Active • 85 employees • San Francisco, CA, USA
    Pachama is a leading climate-tech company harnessing cutting-edge technologies such as computer vision and satellites to drive funding to effective reforestation and conservation projects that sequester carbon, enhance biodiversity and enrich local communities around the world. Through a tech-verified marketplace that counts as customer the likes of Amazon, Airbnb, Netflix and Nespresso, the company drives capital to forests in Brazil, Mexico, India, the USA and beyond. The company is backed by top investors such as Bill Gates' BEV, Chis Sacca's LowerCarbon, Amazon Climate Pledge among others. The company is fully remote and driven by a strong sense of purpose.
    carbon-capture-and-removal
    machine-learning
    climate
  • Posh
    Posh (w2022)Active • 4 employees • San Francisco, CA, USA
    We design, develop and manufacture sustainable battery solutions.
    energy-storage
    robotics
    climate
    climatetech
  • Alga Biosciences
    Alga Biosciences (w2022)Active • 5 employees • Berkeley, CA, USA
    Alga Biosciences is a fast-moving startup focused on transforming the agricultural industry. Our mission is to make an immediate, dramatic impact on global methane emissions produced by enteric fermentation in partnership with the cattle industry. We believe in leveraging biology to tackle the world’s biggest problems.
    biotech
    climate
    agriculture
  • Ferveret
    Ferveret (s2021)Active • 6 employees • San Jose, CA, USA
    Ferveret develops liquid cooling solutions inspired by nuclear power plant cooling. We save data centers 96% in cooling costs, 68% on capital costs, and reduce their carbon footprint by 40% while increasing chip performance by 2X. Today, about 40% of the electricity used in these facilities is wasted on cooling. Our technology eliminates this wasted energy.
    hardware
    climate
    energy
  • Boundary Layer Technologies
    Boundary Layer Technologies (w2019)Active • 5 employees • Alameda, CA, USA
    Boundary Layer Technologies is building the next generation of water mobility, starting with a ultra-performances electric foiling water craft called Valo. Valo flies 2ft above the water at 58mph, in silence, with no waves or emissions, and will be the most exhilarating thing on the water.
    transportation
    climatetech
  • Wren
    Wren (s2019)Active • 10 employees • San Francisco, CA, USA
    With Wren, anyone can offset their carbon footprint by supporting credible nature, industry, and policy projects. We also show users how they can reduce their carbon footprint. We make it easy for anyone to turn climate confusion into climate action.
    consumer
    climate
  • Impossible Metals
    Impossible Metals (w2022)Active • 20 employees • Pasadena, CA, USA
    Impossible mining is building underwater robotics vehicles which collect battery metals from the seabed without harming the environment. We have $500M+ in off-take LoI’s and have signed a partnership with a global offshore logistics company which holds a seabed mining exploration permit. We have also built the 1st PoC underwater robotic arm. Polymetallic nodules are rocks which are rich in critical battery metals. Specially nickel, cobalt, manganese and copper. These metals are the the most expensive part of EVs.
    artificial-intelligence
    robotics
    climate
    energy
    mining
  • Noya
    Noya (w2021)Active • 12 employees • San Francisco, CA, USA
    Noya is radically reducing the upfront capital costs and installation time required to perform direct air capture. We're doing this by retrofitting existing pieces of industrial equipment like cooling towers and turning them into CO2 capture machines.
    carbon-capture-and-removal
    climate
  • AirMyne
    AirMyne (w2022)Active • 11 employees • Berkeley, CA, USA
    AirMyne is building machines to capture & remove carbon dioxide from ambient atmospheric air so it can be utilized or sequestered downstream. Our team is based in Berkeley, CA.
    carbon-capture-and-removal
    hard-tech
    hardware
    climate
  • Voltic
    Voltic (s2022)Active • 5 employees • San Francisco, CA, USA
    We are working to reduce greenhouse gas emissions in the shipping industry by replacing fuel with solar panels. Solar-powered cargo ships have the potential to eliminate 2.2% of global CO2 production, while simultaneously cutting shipping costs by 50-75% depending on route. We are making a boat that is both greener and cheaper.
    logistics
    climate
    climatetech
  • Maple Materials (fka Saratoga Energy)
    Maple Materials (fka Saratoga Energy) (w2019)Active • 4 employees • Richmond, CA, USA
    Maple Materials, Inc. (Richmond, California) develops a low-cost electrolysis process to split carbon dioxide into graphite and oxygen. Due to several unique features of our production process and product, we have potential to produce battery-grade graphite anode material one-third the cost of current graphite anode materials. When powered by renewables, this process has the potential to be carbon negative.
    advanced-materials
  • Holy Grail
    Holy Grail (s2019)Active • 7 employees • San Francisco Bay Area, CA, USA
    Holy Grail removes carbon dioxide from the atmosphere to contribute to the long-term sustainability of humans and other species on Earth
    carbon-capture-and-removal
    hard-tech
    hardware
    climate
    climatetech
  • EARTH AI
    EARTH AI (s2019)Active • 12 employees • San Francisco, CA, USA
    EARTH AI is a predictive explorer and driller for critical metal deposits. We discovered 5% of the world’s deposits this year, thanks to our AI with 66% vs 0.5% success rate and Low Disturbance Drilling tech which enables 1/4 cheaper and 4X faster site testing.
    ai-enhanced-learning
    climate
    mining
  • Living Carbon
    Living Carbon (w2020)Active • 40 employees • Charleston, SC, USA
    Public benefit company on a mission to fight climate change by genetically enhancing CO2 capture and storage in plants.
    synthetic-biology
    biotech
    climate
    agriculture
  • Valor Water Analytics
    Valor Water Analytics (w2015)Acquired • 2 employees • San Francisco, CA, USA
    Today, water supplies are more scarce than ever before, requiring water utilities to operate more efficiently than anyone thought possible. That’s where we come in. Like water, the flow of data from water utilities is both measurable and manageable. Valor helps utilities transform complicated data into simple solutions that can make a big difference. Some call it advanced water utility analytics. We call it all in a day’s work.