Blykalla is a Swedish company specializing in the production of advanced small modular reactors (SMRs). Their design, built on over 25 years of research, is now being introduced to the market. By providing necessary baseload energy, Blykalla enables a complete transition to a fossil-free future.
Their product, the Swedish Advanced Lead Reactor (SEALER), is a cutting-edge SMR that utilizes liquid lead cooling. Although lead-cooled reactors have been employed in submarines for over 60 years, Blykalla has introduced several novel, breakthrough innovations that now make the commercialization of such reactors feasible. Blykalla is actively collaborating with global partners to deliver Sweden’s next nuclear reactor within this decade.
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Janne Wallenius
CTO and Co-Founder
HOW IT WORK
The Science
Small Modular Reactors (SMRs) offer clean, reliable energy with designs suitable for standardized, serial production, ensuring consistent quality and efficiency. Beyond electricity generation, they address hard-to-abate sectors by providing industrial process heat, enabling hydrogen production, and facilitating water desalination, thereby aiding in decarbonizing the industrial value chain.
Blykalla’s Swedish Advanced Lead Reactor (SEALER) is a compact, passively safe SMR utilizing liquid lead coolant. A patented aluminum-alloyed steel ensures corrosion resistance, overcoming traditional challenges associated with lead coolants. Lead’s high boiling point (1700°C) allows for low-pressure operation and effective radiation shielding. SEALER’s design eliminates the need for fuel replacement during operation, reducing fuel management costs. In case of a core disruptive accident, volatile fission products are contained within the lead coolant, ensuring safety without necessitating evacuation.
EARTH FIRST VISION
The Future
Blykalla, meaning "Lead-cooled" in Swedish, specializes in advanced small modular reactors (SMRs). With over 25 years of research behind their design, Blykalla is now bringing this innovative technology to market to support a fully fossil-free future by providing reliable baseload energy.
Their flagship product, the Swedish Advanced Lead Reactor (SEALER), is a state-of-the-art SMR that uses liquid lead cooling. While lead-cooled reactors have been used in submarines for over 60 years, Blykalla’s breakthrough innovations make commercializing this technology viable for the first time. Partnering with global leaders, Blykalla aims to deliver Sweden’s next nuclear reactor within the decade.
people
Their DNA
Blykalla’s founders bring unique expertise that positions them to revolutionize nuclear energy. Professor Janne Wallenius, a reactor physicist at KTH, has led research on lead-cooled reactor systems since 1996, combining decades of experience in nuclear design and safety. Dr. Peter Szakalos, an expert in high-temperature corrosion science, has developed groundbreaking steels with unparalleled corrosion resistance, addressing critical challenges in advanced nuclear reactors. Jacob Stedman, CEO, is a serial entrepreneur with a background in scaling startups and consulting on electricity production and climate change. Together, they merge scientific innovation with strategic leadership to advance Blykalla’s mission of sustainable energy.