Helion Energy
100 jobsSeries C+ · Everett, WA
Builds commercial fusion generators.
$1.5B raisedFunded Jun 2026
Endurance Energy
18 jobsSeries A · Seattle, WA
Modular seafloor geothermal power plants for gigawatt-scale baseload renewable energy.
$79M raisedFunded Jun 2026
Zeno Power
16 jobsSeries B · Seattle, WA
Builds radioisotope power systems.
$102.7M raisedFunded Jan 2025
Avalanche Energy
9 jobsSeries B · Seattle, WA
Builds micro-scale orbitron fusion power sources.
$170.3M raisedFunded Jul 2025
Boosts industrial performance with AI.
$110.5M raisedFunded Sep 2025
Zap Energy
1 jobsSeries C+ · Everett, WA
Develops sheared-flow Z-pinch fusion energy technology.
$348.2M raisedFunded Sep 2024
AtmoCooling
Seed · Seattle, WA
Turns deserts into commercial hubs.
$3.6M raisedFunded Dec 2024
Electric Era
Series A · Seattle, WA
Builds nationwide EV fast charging.
$39.5M raisedFunded Aug 2025
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.