Company Directory

Energy & Climate Companies in SF Bay Area

A curated directory of energy & climate companies headquartered in SF Bay Area, with live hiring activity and funding context.

50 companies · Updated Sep 2026

Oklo

Public · San Jose, CA

69 jobs

Builds micro nuclear reactors.

$850.6M raisedFunded Jun 2025
Mariana Minerals

Series A · San Francisco, CA

63 jobs

Builds and operates software-enabled mines.

$85M raisedFunded May 2025
Heron Power

Series B · Scotts Valley, CA

44 jobs

Builds grid-scale power electronics.

$183.2M raisedFunded Feb 2026
Fuse

Series C+ · San Leandro, CA

38 jobs

Builds pulsed fusion generators.

$93.4M raisedFunded May 2026
Antora Energy

Series C+ · Sunnyvale, CA

36 jobs

Stores zero-carbon industrial heat.

$860.1M raisedFunded Jul 2026
KoBold Metals

Series C+ · Berkeley, CA

36 jobs

Discovers new material deposits.

$1.1B raisedFunded Oct 2025
Lyten

Series B · San Jose, CA

31 jobs

Lithium-sulfur batteries and 3D graphene supermaterials for energy and defense.

$1.3B+ raisedFunded Jul 2023
Peak Energy

Series B · Burlingame, CA

31 jobs

Builds sodium-ion batteries.

$145M raisedFunded Jun 2026
Gridware

Series B · San Francisco, CA

23 jobs

Deploys remote grid sensors.

$97.5M raisedFunded Nov 2025
Lunar Energy

Series C+ · Mountain View, CA

19 jobs

Powers homes with batteries that form virtual power plants.

$532M raisedFunded Feb 2026
Planted Solar

Series C+ · Oakland, CA

14 jobs

Deploys rapid robotic power systems.

$33.6M raisedFunded Jun 2026
Rondo Energy

Series B · Oakland, CA

14 jobs

Builds thermal energy storage.

$361.8M raisedFunded May 2025
American Terawatt

Seed · San Francisco, CA

9 jobs

Builds a national direct-current power backbone for AI data centers and American industry.

$52.6M raisedFunded May 2026
Ambrosia

Seed · Redwood City, CA

8 jobs

Pairs solar with battery storage for round-the-clock off-grid power.

Funded Jun 2026
Charm Industrial

Series C+ · San Francisco, CA

7 jobs

Sequesters carbon underground via bio-oil.

$271.3M raisedFunded Oct 2025
Verse

Series B · San Francisco, CA

6 jobs

Manages power procurement with AI.

$83.3M raisedFunded Jun 2026

18 of 50 shown

How this list is built

BuildList includes active companies with a canonical sector and headquarters metro. Hiring counts come from verified openings collected directly from company applicant-tracking systems.

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