Switzerland moves closer to new nuclear plants after key Senate vote

Switzerland's Council of States has voted in principle to permit the construction of new nuclear power plants. The decision comes as part of ongoing debates over energy security and the future of the country's power supply. However, a separate initiative demanding stricter constitutional guarantees was rejected by a clear majority.

The outcome sets the stage for a broader public vote, with Swiss citizens set to have the final say in a referendum.

The Council of States debated two key proposals: the initiative Guaranteed Power for All (Stop Blackouts) and a counterproposal allowing new nuclear plants. A motion to accept the initiative failed, with only 26 members in favour, 12 against, and 3 abstentions. Most opposed embedding its strict regulations in the constitution.

Left-wing factions had pushed to dismiss the motion entirely, but their efforts were unsuccessful. The decisive factor in the final vote was the stance of the centre-right Die Mitte party, whose members largely backed the measure. Just one representative from the party opposed it.

Switzerland currently operates four nuclear plants: Beznau 1 and 2—both over 50 years old—and Gösgen, which has been offline since May 2025 but remains relevant. A phase-out is planned, with operational data still being collected until January 2026.

The National Council will now review both the initiative and the counterproposal. If approved, the issue will go to a mandatory public referendum, giving Swiss voters the final decision.

The Council of States' recommendation to reject the initiative leaves the door open for new nuclear projects. The National Council's upcoming discussions will shape the next steps before the matter reaches voters. A referendum will ultimately determine whether Switzerland's energy policy shifts toward expanded nuclear capacity.