Studsvik Selected Partners to Advance 1.2 GW Nuclear Power Project in Sweden
On 3 September, Studsvik (ENS Corporate Member) signed an agreement regarding the potential of a four-unit Small Modular Reactor (SMR) in Sweden. The agreement is with GE Vernova Hitachi Nuclear Energy, GE Vernova Financial Services, DS Investment Partners, and Samsung C&T, with the goal of advancing the work of the “ReFirm” project to deploy BWRX-300 SMR plants.
ReFirm is a multi-site SMR and new nuclear development programme that was absorbed by the Studsvik Group following the acquisition of Kärnfull Next (KNXT) in early 2026.
Studsvik will lead the environmental impact assessment, site rights, community engagement, and dialogue with the Swedish state, while GE Vernova Hitachi will lead reactor design, licensing support, and cost estimation. The remaining members will work in design authority, as well as advisory and financial structuring.
The phased, multi-unit structure is intended to assist in the standardisation across the ReFirm programme and provide lessons learned to apply to subsequent units, helping improve costs, schedules, and enhance Sweden’s industrial participation. It highlights a broader objective of building a supply chain that can contribute to wider deployment opportunities in Sweden and the rest of Europe.
The plants are to be located in either Nyköping, the application for which has been submitted to the Swedish government last May, or Valdermarsik (both in the southeast of Sweden), with the decision to be made during the development stages.
Read the Full Studsvik Press Release
The agreement reflects Sweden’s ambition to expand its nuclear capacity. In June 2023, Sweden also replaced its previous ‘100% renewable’ electricity target with ‘100% fossil-free’, signalling a clear political commitment to nuclear energy’s long-term role in the country’s energy mix.
Currently, Sweden has six large- scale reactor units, and nuclear energy provided 27% of the country’s electricity generation in 2025. By 2035, the country plans to add around 2.5 GW of capacity with the goal of deploying both large-scale reactors and SMRs.
