Swiss coalition submits referendum against new nuclear plants

More than 125,000 signatures in three months have forced Switzerland toward a nationwide vote on whether it should allow new nuclear power stations. The campaign opposing the government and parliament’s proposal announced the result on September 20, 2026, after collecting support for a referendum against the planned policy change.

The vote will decide whether Switzerland can reverse its ban on constructing new nuclear plants. Parliament approved the government’s indirect counter-proposal to the “Stop the Blackout”, also known as “Electricity for All at All Times”, popular initiative during the June 2026 summer session. The proposal does not build a reactor. It would remove the legal barrier preventing future projects from being developed.

That distinction leaves Switzerland facing a decision about the direction of its energy policy rather than an immediate construction timetable. A successful referendum campaign has now moved the dispute from parliament into the national political arena. Voters will weigh the promise of additional low carbon electricity against concerns over cost, safety, uranium imports and the long lead times associated with nuclear infrastructure.

Parliament’s June 2026 decision would lift the ban on new nuclear power stations. The measure emerged as an indirect counter-proposal to the “Stop the Blackout” popular initiative, which calls for electricity to be available at all times. The government and parliament argue that Switzerland should retain the option of nuclear generation as it plans for future electricity demand.

The source does not specify a construction project, reactor design, budget or start date. Any future plant would therefore remain subject to additional political, regulatory, financial and technical decisions. The referendum concerns the legal permission to pursue new facilities.

Supporters of the parliamentary approach see nuclear power as part of a broader effort to secure reliable electricity while reducing emissions. Switzerland already operates nuclear facilities, and a separate Swissinfo analysis published in July examined the argument for keeping existing plants running. The current campaign, however, focuses on whether the country should reopen the door to new construction.

The referendum gives voters the final say on that change. Its outcome will shape the boundaries of Switzerland’s energy strategy for years, even before any reactor proposal reaches the planning stage.

The opposition coalition spans major parties and around 30 environmental organisations. The Greens, Social Democrats and Green Liberals have joined the campaign, as have members of the Centre Party. WWF, Greenpeace, Pro Natura and Swissolar are among the organisations backing the referendum.

The coalition says voters have already established a renewable energy course through three nationwide decisions. It points to the adoption of the Energy Strategy 2050 in 2017, the Climate Protection Act in 2023 and the Electricity Act in 2024. Campaigners argue that lifting the nuclear construction ban would disregard those choices and redirect attention away from domestic renewable generation.

In its statement, the coalition said Switzerland is increasingly meeting its energy needs through locally produced solar, wind and hydropower. It also described nuclear technology as costly and dangerous, while warning that uranium imports could increase dependence on foreign suppliers, particularly Russia.

Those claims will sit at the centre of the referendum campaign. The opposing sides are preparing to argue over the reliability, price, emissions profile and strategic risks of different power sources. The final ballot debate will test whether voters see the renewable path as sufficient on its own or want nuclear power kept available as an additional option.