How much funding has Last Energy raised?

Last Energy has raised $170.0M in total funding, most recently a Series C round.

Who are Last Energy's investors?

Last Energy's investors include First Round Capital, Astera Institute, Floodgate, AE Ventures, Galaxy, Gigafund.

When was Last Energy founded?

Last Energy was founded in 2019.

Where is Last Energy headquartered?

Last Energy is headquartered in Austin, Texas, United States.

What industry is Last Energy in?

Last Energy operates in Climate Tech.

How many employees does Last Energy have?

Last Energy has 51-200 employees.

Last Energy

20 MWe SMR | Fully modular, factory made

Austin, United States · Founded 2019 · $170.0M raised

Climate Tech

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.

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