Last Energy
20 MWe SMR | Fully modular, factory made
Austin, United States · Founded 2019 · $170.0M raised
- Headquarters
- Austin, Texas
- Employees
- 51–200
- Founded
- 2019
- Business Model
- B2B
- Website
- lastenergy.com
- Total Funding
- $170.0M
- Last Round
- $100.0M Series CDec 2025
- Rounds
- 4
About
Last Energy develops micro modular nuclear power plants, providing a full-service delivery model from design through operations. They aim to deliver decarbonized, reliable, affordable baseload nuclear energy at scale for energy-intensive industries like data centers, construction materials, metals, chemicals, and pulp and paper. Their PWR-20 reactor targets rapid deployment of clean power.
Summary
Last Energy is a Climate Tech company based in Austin, United States, founded in 2019. It has raised $170.0M in total across 4 rounds, most recently a $100.0M Series C round in Dec 2025. Investors include First Round Capital, Astera Institute and Floodgate.
Tech & App Stack
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Funding History
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Dec 2025
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Seed through Series C — per-round amounts, valuations, and who invested in each round.
Investors
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