Washington, DC · Founded 2019 · Privately Held (backing)
Developer of small modular nuclear power projects intended to transform the nuclear power industry by dramatically reducing the time and cost of construction. Last Energy is based in Washington, DC and was founded in 2019. Its last reported valuation was $643 million in Jul 2025. It has raised $324 million.
Last reported valuation
$643.0M
Oct 2026
Priced at
—
Total raised
$323.7M
Last round
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Cap table — not yet on record
Last Energy's share-class structure hasn't surfaced in our sources yet. Cap tables are assembled from certificates of incorporation, round filings, and disclosures as they land.
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·The complete investor list: 20 names
·Watch Last Energy: the Monday email on marks, rounds and moves