Blykalla is a Swedish advanced-reactor developer commercializing its Swedish Advanced Lead Reactor, or SEALER, platform. Its technology focus is compact, passively safe lead-cooled reactors, including the 55-MW SEALER-55, enabled by proprietary aluminium-alloyed steels intended to resist liquid-lead corrosion. On 18 May 2026, Blykalla announced that it had applied to the Swedish government to develop a six-reactor advanced nuclear park at Norrsundet with planned capacity of approximately 330 MW.
KTH Royal Institute of Technology, Research Institutes of Sweden (RISE)