Studsvik has applied to the Swedish Government to build between 600 MW and 1,400 MW of new nuclear capacity at and around its existing site in Nyköping Municipality, with the first reactors potentially entering commercial operation in the 2030s.
The proposal forms part of the company’s wider ReFirm small modular reactor (SMR) programme, which aims to develop multiple nuclear sites across Sweden.
It follows an earlier application from Kärnfull Next, another company within the Studsvik Group, for up to 1,600 MW of SMR capacity at Valdemarsvik.
Studsvik said the Nyköping project builds on decades of nuclear expertise and existing infrastructure at the site, which has been involved in reactor physics, fuel research and materials science since the 1940s.
“Sweden has decided to build new nuclear power, and the country needs new firm, fossil-free capacity on a scale not seen in a generation,” said Karl Thedéen, President and CEO of Studsvik.
“Few sites in the country are as ready to contribute as Nyköping.”
Sweden’s electricity demand is expected to increase sharply as industries including steel, chemicals, transport and data centres electrify.
At the same time, much of the country’s current nuclear fleet is expected to retire by the middle of the century.
The Swedish Government last year launched a SEK 220bn financing facility and contracts-for-difference scheme aimed at supporting around 5,000 MW of new nuclear capacity over the next decade.
The project will now enter a wider permitting process involving the municipality, the Swedish Radiation Safety Authority and the Land and Environment Court.
Copyright © 2026 Energy Live News LtdELN