We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.
There are 28 start-ups with an aggregate funding of $2.1b. The average funding per company in this subset is $74.7m.
Last update to the database: Apr 21, 2026. See changelog.
4
Funding Rounds
$105.0m
Money raised
Solidia Technologies is a Piscataway, New Jersey-based technology company offering solutions for using CO2 for manufacturing construction and industrial products.
3
Funding Rounds
$103.5m
Money raised
Charm Industrial is a company that works to produce reliable, cost-competitive hydrogen from biomass.
3
Funding Rounds
$53.0m
Money raised
Heirloom is a San Francisco-based environmental remediation company founded by Shashank Samala.
9
Funding Rounds
$119.5m
Money raised
Carbon Engineering is building technologies to capture CO2 directly from the atmosphere, and to use that CO2 in the synthesis of clean transportation fuels that displace crude oil.
3
Funding Rounds
$166.0m
Money raised
Carbon capture and storage.
2
Funding Rounds
$24.0m
Money raised
Brilliant Planet is a nature-based system capturing and storing carbon founded in 2013 by Raffael Jovine Ph.D.
1
Funding Rounds
$11.5m
Money raised
Terraton is a San Francisco-based climate tech startup building a full-stack platform for biochar-based carbon removal. Founded by Kevin Gibbs and Greg D’Alesandre, it helps agribusiness operators deploy biochar facilities, generate carbon credits, and scale sustainable climate solutions in emerging markets.
11
Funding Rounds
$1.0b
Money raised
Climeworks is a direct Air Capture (DAC) technology developer founded in 2009 by Christoph Gebald.
3
Funding Rounds
$12.2m
Money raised
Capturing CO2 from the sky and re-selling it for 2x cheaper
7
Funding Rounds
$151.6m
Money raised
A carbon sequestration technology and bioplastics company based in Huntington Beach, California, founded in 2003, that uses their technology to capture carbon from greenhouse emissions for production of bioplastics.
3
Funding Rounds
$6.0m
Money raised
Carbon Upcycling Technologies Inc. is a Calgary-based carbon capture and storage company developing technologies to turn the carbon into building materials.
1
Funding Rounds
$54.0m
Money raised
Climate technology focused on carbon removal by accelerated erosion of silicate rock.
3
Funding Rounds
$77.7m
Money raised
Agreena is a soil carbon program for farmers founded in 2018.
4
Funding Rounds
$10.8m
Money raised
Seabound is a provider of carbon capture system for ships founded in 2021 by Alisha Fredriksson.
2
Funding Rounds
$42.0m
Money raised
44.01 is a mineralisation technology developer founded in 2020 by Talal Hasan.
2
Funding Rounds
$10.0m
Money raised
Direct Air Capture (DAC) technology to remove carbon dioxide.
1
Funding Rounds
$25.0m
Money raised
Isometric is a carbon removal standard and registry.
3
Funding Rounds
$28.8m
Money raised
Supercritical is a carbon removal marketplace
10
Funding Rounds
$14.4m
Money raised
Carbon capture and storage company founded in 2007 and based in Dartmouth, Nova Scotia, Canada. CarbonCure Technologies Inc. provides carbon dioxide sequestering technology to concrete plants in a system for recycling carbon dioxide waste from industrial emitters and incorporating it into concrete products.
2
Funding Rounds
$6.2m
Money raised
ecoLocked is a green concrete manufacturer founded in 2021.
1
Funding Rounds
$3.5m
Money raised
C2CNT is a Virginia-based developer of carbon capture and storage technology which uses the captured material to create carbon nanotubes.
1
Funding Rounds
$5.3m
Money raised
Global asset management platform for high-integrity carbon projects.
1
Funding Rounds
$6.5m
Money raised
CUR8 is a market-making platform for carbon removal.
1
Funding Rounds
$10.0m
Money raised
Sustaera, Inc. is a Cary, North Carolina-based company founded in 2021.
1
Funding Rounds
$2.2m
Money raised
SeaO2 is a carbon (CO2) removal technology developer founded in 2021 by Ruben Brands.
1
Funding Rounds
$4.5m
Money raised
Patch helps clients make their businesses carbon neutral .
1
Funding Rounds
$1.4m
Money raised
CERT is a Toronto-based carbon capture and storage company converting CO2 into chemical feedstocks and carbon-based fuels.
1
Funding Rounds
ARK Capture Solutions is a carbon capture technology developer founded in 2024 by Samuel Thiry.
Enter your email and get access to 71,000 + technology companies you can partner with.