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Blykalla

Energy · Stockholm, SE

KTH spin-out developing SEALER, a small lead-cooled modular reactor for low-emission baseload.

Funding history

DateRoundAmount
Dec 2025Funding round
Sweden's Blykalla raised $50 million co-led by Oklo, Norrsken Launcher and ARMADA Investment to industrialize its lead-cooled SEALER reactor.
$50M
Apr 2024Funding round
Blykalla, a Stockholm small-modular-reactor startup, raised SEK80M (about EUR6.87M) led by Norrsken Launcher and Nucleation Capital.
$6.9M

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