Sweden-based companies Blykalla, evroc, and Studsvik have signed a memorandum of understanding (MOU) to explore the development of Sweden’s first nuclear-powered data centres at Studsvik’s licensed nuclear site in Nyköping.
Evroc is building hyperscale cloud and AI infrastructure to power Europe’s digital future. Blykalla is developing advanced lead-cooled reactors and Studsvik’s Nyköping site provides lifecycle services for the nuclear sector, including fuel, materials, and waste management. Together, they combine technology, infrastructure, and site expertise to accelerate the deployment of nuclear-powered data centres.
Through the agreement, the companies aim to establish Sweden as a frontrunner in this development, leveraging Studsvik’s licensed site, evroc’s digital infrastructure, and Blykalla’s advanced SMR technology.
Under the MOU, the goal is to assess the commercial and technical viability of co-locating data centres and SMRs at Studsvik licensed site, engage with municipalities and landowners, and define what a future commercial power purchase agreement structure could look like. The parties will now establish a joint steering committee to evaluate the site and business model, with the goal of entering formal partnership negotiations later this year.
“This collaboration is an opportunity for Sweden to be a leader in digital infrastructure,” said Blykalla CEO Jacob Stedman. “lt allows us to demonstrate how SMRs can provide the stable, fossil-free energy that is required for the AI revolution. Studsvik’s site and evroc’s ambitions offer the right conditions for a groundbreaking project.”
Mattias Åström, Founder and CEO of evroc, said the growing demand for AI “underscores the urgent need to rapidly deploy massive hypserscale AI infrastructure”. Through collaboration with Blykalla and Studsvik, “we are exploring a model where Sweden can lead in building climate-neutral digital infrastructure”.
Studsvik CEO Karl Thedéen said “Studsvik’s provides a unique platform of site infrastructure and unique competence to combine advanced nuclear with next-generation industry. This MOU is an important step in evaluating how such synergies can be realised in Sweden.”
Blykalla founded in 2013, is a spin-off from the KTH Royal Institute of Technology in Stockholm. Its SMR prototype SEALER (Swedish Advanced Lead-cooled Reactor) design is a fast compact reactor with passive safety. Each reactor will have a 55 MWe capacity, which can be increased by installing multiple units at the same location. The reactor is designed with the smallest possible core that can achieve criticality in a fast spectrum using 19.9% enriched nitride fuel. It broke ground in February for the construction of an electrical small modular reactor pilot facility near Oskarshamn to test proof of concept of its SEALER technology.
The company plans to achieve criticality for its first SEALER reactor by 2030 and begin serial production in the 2030s. While its website has details of the overall design, fuel and the safety features, there are no details about the fast reactor technology. This is currently only operational in Russia, where the world’s first ever lead-cooled fast reactor is now nearing completion after decades of government supported research and development. Hitherto only sodium has been used as the liquid metal coolant in fast reactors.
Headquartered in Stockholm, evroc (The European Cloud) is building Europe’s hyperscale cloud and critical AI infrastructure. By 2030, evroc aims to operate 10 hyperscale data centres, employing thousands of people across Europe.
Studsvik offers a range of advanced technical services to the global nuclear power industry. Studsvik’s business focus areas are fuel and materials technology, reactor analysis software, decontamination and radiation protection as well as technical platforms for handling, conditioning and volume reduction of radioactive waste. The company has more than 75 years’ experience of nuclear technology and radiological services.
