HomeBreeze
Shut down
What they do:
The fastest and easiest way to make home upgrades
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HQ: San Francisco, CA, United States
Top Climate & Energy Startups in San Francisco
This list has 90 startups and was last updated on Oct 15, 2026. 13 of them are hiring right now. Largest teams: Cruise, Momentus, and Gridware. Latest round: Aikido Technologies raised $1.72M (Oct 8, 2026).
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Sunfolding
Shut down
What they do:
Sunfolding builds next generation infrastructure for solar farms. By…
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HQ: San Francisco, CA, United States
SpaceRyde
Shut down
What they do:
The Rocket Network: Sustainable & On-Demand Delivery Anywhere in Space
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HQ: San Francisco, CA, United States
Queenly
Shut down
What they do:
Leading marketplace for formalwear
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HQ: San Francisco, CA, United States
Noya
Shut down
What they do:
Radically reducing capital costs and build time for direct air capture
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HQ: San Francisco, CA, United States
Jupe
Shut down
What they do:
Just add land
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HQ: San Francisco, CA, United States
Riya Collective
Shut down
What they do:
Riya Collective is building the first community-driven global…
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HQ: San Francisco, CA, United States
Pelm
Shut down
What they do:
Plaid for utilities
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HQ: San Francisco, CA, United States
Onsite Pro
Shut down
What they do:
Revolutionizing digital selling within HVAC
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HQ: San Francisco, CA, United States
OutSail Technologies
Shut down
What they do:
Revolutionary, Modern Wing Sails
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HQ: San Francisco, CA, United States
Line.Build
Shut down
What they do:
Incentives and financing for energy efficiency upgrades
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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
Phoenix Hydrogen
Shut down
What they do:
First commodity marketplace for hydrogen.
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HQ: San Francisco, CA, United States
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
Canopi
Shut down
What they do:
API to measure and eliminate carbon emissions
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HQ: San Francisco, CA, United States