Jasmine Energy
Shut down
What they do:
Claim solar incentives with AI
Quick facts:
HQ: Washington, DC, United States
Top Climate & Energy Startups in the United States
This list has 236 startups and was last updated on Oct 15, 2026. 26 of them are hiring right now. Biggest hubs: San Francisco (90), New York (15), and Los Angeles (12). Largest teams: Cruise, Zeitview, and Solugen. Latest round: Circularity Fuels raised $8.79M (Oct 14, 2026).
236 startupsPage 7 of 7
Onsite Pro
Shut down
What they do:
Revolutionizing digital selling within HVAC
Quick facts:
HQ: San Francisco, CA, United States
Pursuit
Shut down
What they do:
Turnkey co-ownership & management of properties
Quick facts:
HQ: Denver, CO, United States
FREY
Shut down
What they do:
FREY is a line of exceptional laundry and clothing care products.…
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HQ: CA, United States
Green Energy Exchange
Shut down
What they do:
We deliver affordable renewable energy direct to customers and are…
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HQ: Austin, TX, United States
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
Doblet
Shut down
What they do:
Doblet solves the phone battery problem. We're building the first…
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HQ: San Francisco, CA, United States
Reduced Energy Microsystems
Shut down
What they do:
Building the lowest-power silicon for embedded deep learning and…
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HQ: San Francisco, CA, United States
GTRACK Technologies
Shut down
What they do:
Nanoparticle tracers for reservoir characterization during hydraulic…
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HQ: San Francisco, CA, United States
The Mercer Club
Shut down
What they do:
The Mercer Club is a subscription service that allows men to rent…
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HQ: New York, NY, 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
Quick facts:
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
Wattvision
Shut down
What they do:
Sensors and software for energy tracking. Like 'fitbit' for your…
Quick facts:
HQ: Princeton, NJ, United States
CO2Stats
Shut down
What they do:
Social and environmental web analytics. Acquired in December 2016.
Quick facts:
HQ: Boston, MA, United States
YC S08Early stage
Ohm
Shut down
What they do:
Never jump start your car again.
Quick facts:
HQ: San Francisco, CA, United States
YC S15Early stage
Spero Foods
Shut down
What they do:
dairy reinvented from plants
Quick facts:
HQ: San Francisco, CA, United States
YC S18Growth stage
Canopi
Shut down
What they do:
API to measure and eliminate carbon emissions
Quick facts:
HQ: San Francisco, CA, United States