Engineering company Studsvik has submitted plans for between 600 MWe and 1,400 MWe of new nuclear capacity near its Nyköping headquarters, while the Swedish government is preparing to increase state involvement in a separate small modular reactor (SMR) project at the Ringhals Nuclear Power Plant site.
The developments reflect Sweden’s broader effort to secure firm, low carbon electricity capacity as industrial electrification increases demand. Unlike intermittent renewable sources, nuclear power provides continuous generation, making it a strategic option for industries requiring stable electricity supply.
Studsvik’s latest application is part of its ReFirm South program, which focuses on deploying SMRs in southern Sweden. The company previously submitted another proposal through its subsidiary Kärnfull Next for 1,200 MWe to 1,600 MWe of new nuclear capacity at a planned SMR campus in Valdemarsvik Municipality.
The Nyköping proposal places potential reactors close to Studsvik’s existing nuclear expertise base. The company has operated at the site for decades, conducting work related to reactor physics, nuclear fuel, materials research, and technical services.
Studsvik is targeting commercial operation of its first reactors during the 2030s, although the timeline depends on regulatory approvals, environmental assessments, financing, and local acceptance.
The proposed location offers several infrastructure advantages. Nyköping is located within Sweden’s SE3 electricity price area, which covers much of central Sweden and includes major demand centers. The site’s proximity to transport infrastructure, regional electricity networks, industrial users, and Stockholm Skavsta Airport is viewed as a potential benefit for future construction and operations.
However, the application represents only the beginning of a lengthy regulatory process. Any new reactor project in Sweden must undergo assessments involving municipal authorities, environmental review bodies, and the Swedish Radiation Safety Authority. Developers must demonstrate not only technical feasibility but also environmental compatibility and community support.
The increasing focus on nuclear development marks a significant shift in Swedish energy policy. The country historically relied heavily on nuclear power alongside hydropower, but reactor retirements and changing energy market conditions have raised concerns about long term electricity supply.
At the same time, Sweden is seeing growing industrial demand linked to electrification. Energy intensive sectors, including steel production, battery manufacturing, and industrial processing, require large amounts of reliable electricity. This has increased interest in dispatchable low carbon generation capable of supporting grid stability.
The government’s proposed involvement in Videberg Kraft AB represents a different approach to nuclear expansion by increasing direct state participation. The company plans to develop three to five SMRs at the Ringhals site, potentially adding approximately 1,500 MWe of capacity.
Under Sweden’s 2026 Spring Amending Budget proposal, the government would acquire a majority ownership position in Videberg Kraft. The state would receive authority to hold between 51% and 65% ownership until the reactors enter operation, with a target voting share of 60%.
The proposal includes an initial capital contribution of up to SEK 1.8 billion, equivalent to roughly $193 million, and allows additional investment of up to SEK 34.3 billion, approximately $3.7 billion, during construction.
The state ownership model reflects the high financial barriers associated with nuclear projects. New reactors typically require substantial upfront capital, long development timelines, and regulatory certainty. Governments in several countries have increasingly explored direct participation, financial guarantees, or other mechanisms to reduce investment risks.
Videberg Kraft’s plans build on existing nuclear infrastructure at Ringhals, where state owned Vattenfall operates five of Sweden’s six current commercial reactors. The site already has grid connections, experienced workforce capacity, and established nuclear operations, factors that can reduce some project development challenges.
The proposed ownership structure would combine Vattenfall’s operational experience with industrial partners involved in the project consortium. Supporters argue that state involvement can improve project stability and reduce uncertainty around financing, while critics of government participation often highlight the risks of cost overruns and construction delays that have affected nuclear projects internationally.
SMRs are central to many of Sweden’s recent nuclear proposals because they are designed to be smaller and potentially easier to integrate into existing energy systems than traditional large reactors. However, the commercial maturity of many SMR designs remains a key issue globally, with several technologies still moving through demonstration and licensing stages.
