Company Directory

Energy & Climate Companies in Los Angeles

A curated directory of energy & climate companies headquartered in Los Angeles, with live hiring activity and funding context.

13 companies · Updated Sep 2026

General Matter

Series A · Los Angeles, CA

125 jobs

Restoring US leadership in nuclear fuel enrichment to power AI, manufacturing, and critical industries.

$50M raisedFunded Apr 2025
Radiant

Series C+ · El Segundo, CA

89 jobs

Deploys portable nuclear reactors.

$887.1M raisedFunded Aug 2026
Valar Atomics

Series B · El Segundo, CA

81 jobs

Builds nuclear reactors for industry.

$1.8B raisedFunded Aug 2026
Antares

Series C+ · Redondo Beach, CA

61 jobs

Deploys kilowatt-scale fission reactors.

$1.1B raisedFunded Jul 2026
Rainmaker

Series A · El Segundo, CA

25 jobs

Seeds clouds with drones.

$46.3M raisedFunded May 2025
Arbor Energy

Series A · El Segundo, CA

14 jobs

Generates energy while storing carbon.

$68.5M raisedFunded Oct 2025
Vital Lyfe

Seed · Torrance, CA

11 jobs

Builds portable systems that turn natural water sources into drinking water.

$24.1M raisedFunded Dec 2025
Critical Loop

Series A · Long Beach, CA

9 jobs

Deploys faster power than utilities alone.

$42.2M raisedFunded Apr 2026
Critical Energy

Seed · Hawthorne, CA

6 jobs

Generates clean power from geothermal heat.

$18.2M raisedFunded Jun 2026
Hgen

Seed · Hawthorne, CA

6 jobs

Produces affordable green hydrogen.

$7M raisedFunded Sep 2024
Durin

Seed · El Segundo, CA

4 jobs

Automates mineral exploration drilling.

$3.5M raisedFunded Apr 2025
Terraform Industries

Seed · Burbank, CA

Produces carbon-negative natural gas.

$63.7M raisedFunded Apr 2026
Western Chemicals

Seed · El Segundo, CA

Turning wastewater into the world's cheapest fuels.

$175K raisedFunded Apr 2026

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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