Critical Energy
Critical Energy is a climate tech company in Hawthorne, United States, founded in 2024. It has raised $24.0M across 2 rounds, most recently a $22.0M Seed in June 2026.
Building an abundant low-cost clean energy future
- Headquarters
- Hawthorne, California
- Employees
- 1–10
- Founded
- 2024
- Business Model
- B2B
- Website
- criticalenergy.com
- Total Funding
- $24.0M
- Last Round
- $22.0M SeedJun 2026
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 2 funding rounds and 2 investors for this company. The full record is or through the API.
About
Critical Energy develops factory-built, modular heat-to-electricity power generation systems designed for rapid grid-scale deployment. Founded by Spencer Jackson, a former SpaceX engineer who spent seven years on Falcon Heavy, Starship, and the Raptor rocket engine, the company manufactures containerized turbine modules that convert thermal energy into electricity via a specialized closed-loop working fluid cycle with custom turbomachinery. Units can be shipped in standard containers and installed in weeks rather than years. Critical Energy is targeting a global shortage of compatible turbines in the geothermal sector, starting with geothermal and waste heat recovery from data center gas turbines. The company plans to complete its first 2.5-megawatt project by 2027 and is developing a 5-megawatt module for enhanced geothermal operators.
Summary
It lists 1–10 employees. It has raised $24.0M in total across 2 rounds, most recently a $22.0M Seed round in Jun 2026. Investors include Upfront Ventures and Susa Ventures.
Tech & App Stack
2 technologies & apps tracked
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Funding History
Jun 2026
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Funding: Seed. Amounts, valuations, and investors where available.
Investors
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