Led · Equity · Dec 2025

Blykalla is an advanced nuclear-technology company focused on the SEALER reactor, a compact, lead-cooled fast reactor intended to provide stable, emission-free baseload electricity. The company positions SEALER for both national grids and rapidly growing hyperscale data-center markets whose power needs are increasing with AI adoption. With its latest funding, Blykalla will scale verification and validation activities at the Advanced Reactor Testing Site in Oskarshamn, progress detailed design and construction of its first reactor unit, and accelerate commercial and regulatory work to secure a deployment site and permits. A newly signed Joint Technical Development Agreement with U.S. reactor developer Oklo enables the two firms to coordinate licensing, component procurement, fuel supply, and broader supply-chain efforts, aiming to shorten timelines and reduce risk. Strategically, Blykalla also taps expertise from industrial partners such as Uniper, KSB, and ABB. The company has now raised an additional $50 million, strengthening its balance sheet as it moves toward initial deployment; no revenue or customer metrics were disclosed in the articles.