Green Energy Exchange
Shut down
What they do:
We deliver affordable renewable energy direct to customers and are…
Quick facts:
HQ: Austin, TX, United States
Top Climate Startups
This list has 157 startups and was last updated on Oct 15, 2026. 29 of them are hiring right now. Biggest hubs: San Francisco (55), Los Angeles (10), and New York (9). Largest teams: Cruise, Aerones, and Oolu. Latest round: HyLight raised €13M (Oct 12, 2026).
157 startupsPage 5 of 5
Aklimate
Shut down
What they do:
Software for enterprises to track and reduce supply chain emissions
Quick facts:
HQ: London, United Kingdom
OutSail Technologies
Shut down
What they do:
Revolutionary, Modern Wing Sails
Quick facts:
HQ: San Francisco, CA, United States
Line.Build
Shut down
What they do:
Incentives and financing for energy efficiency upgrades
Quick facts:
HQ: San Francisco, CA, United States
Phoenix Hydrogen
Shut down
What they do:
First commodity marketplace for hydrogen.
Quick facts:
HQ: San Francisco, CA, United States
Overflux
Shut down
What they do:
Streamline EV charger installations for real estate developers
Quick facts:
HQ: Los Angeles, CA, United States
Choppy!
Shut down
What they do:
FAST FLAVORFUL PROTEIN
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HQ: Los Angeles, CA, United States
WATERFX
Shut down
What they do:
The world's first 100% sustainable water provider (aka alternative…
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HQ: CA, United States
CO2Stats
Shut down
What they do:
Social and environmental web analytics. Acquired in December 2016.
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HQ: Boston, MA, United States
YC S08Early stage
Ohm
Shut down
What they do:
Never jump start your car again.
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HQ: San Francisco, CA, United States
YC S15Early stage
Spero Foods
Shut down
What they do:
dairy reinvented from plants
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HQ: San Francisco, CA, United States
YC S18Growth stage
Micro Meat
Shut down
What they do:
Technologies for scaling up cultured/clean meat production
Quick facts:
YC S21Early stage
Canopi
Shut down
What they do:
API to measure and eliminate carbon emissions
Quick facts:
HQ: San Francisco, CA, United States