Switzerland’s Nuclear Comeback Faces a Popular Vote After a Swift Signature Drive

Oct 20

3 min read

AI-generated editorial illustration; it does not depict a real plant or event.

More than 125,000 people signed a Swiss referendum request in roughly three months to challenge Parliament’s plan to reopen the door to new nuclear power stations. By October 6, the coalition behind the campaign said it had submitted more than 131,800 signatures to the Federal Chancellery in Bern. The campaign has moved the issue toward a national vote, although the submitted signatures still have to pass official checks.1 2

The dispute is about whether Switzerland should be allowed to build new reactors—not whether its existing plants must close immediately. The Federal Council proposed changing the Nuclear Energy Act, and both chambers of Parliament backed the change in June. It would reverse the ban on authorising new nuclear power stations, a policy rooted in the energy strategy approved by voters in 2017.3 5

Why the nuclear question is back

The 2017 vote followed years of debate after the Fukushima disaster in Japan. More than 58% of voters supported Switzerland’s Energy Strategy 2050, which set a path toward greater use of renewable energy and prohibited the construction of new nuclear plants. Existing reactors were not ordered to shut down on a fixed date; they may operate while regulators consider them safe.3 5

The government’s case for changing course centres on electricity security. Switzerland depends on imports during winter, when domestic hydropower and solar output may not meet demand. Supporters of nuclear power say new reactors could provide reliable, low-carbon electricity and serve as a reserve if renewables and other climate-friendly sources prove insufficient.3

Opponents argue that a return to nuclear power would be expensive, slow to deliver and risky. They say new plants could divert investment from solar, wind and hydropower, while deepening reliance on imported uranium. The campaign also presents the referendum as a question of public consent: voters endorsed an energy policy in 2017, and now Parliament is seeking to amend a central part of it.1 2

The coalition bringing the referendum includes the Social Democrats, Greens, Green Liberals, parts of the Centre Party, and environmental organisations including Greenpeace and the Swiss Energy Foundation. Its reported total of 131,800 signatures is more than double the federal threshold, but the number alone does not make a referendum official. The Federal Chancellery must verify the signatures and confirm that at least 50,000 are valid.2 4

How Switzerland’s referendum process works

This is an optional referendum against legislation approved by Parliament. Under Switzerland’s system, opponents of a new or amended federal law have 100 days after its publication to collect 50,000 valid signatures. If the request succeeds, voters decide whether the legislation should take effect. The Federal Council sets the voting date.4

Swissinfo reported that February 28, 2027, could be the earliest date for a vote if the referendum is officially approved.2 That is a possible timetable, not a confirmed ballot date. Until the authorities complete their review and announce a date, the measure remains a parliamentary change facing a referendum request.

AI-generated conceptual illustration of direct democracy; not a photograph of the signature campaign.

The fast collection drive demonstrates how Switzerland’s direct-democracy tools can give citizens a formal route to challenge decisions made in Bern. The campaign’s reach does not predict how voters will decide. A future ballot will ask the electorate to weigh energy security, cost, climate goals, waste and the pace of renewable expansion against one another.

Closing Thoughts

My view is that the signature drive should be read first as a demand for a public decision, not as a verdict on nuclear power itself. Switzerland’s voters will have to decide whether a change in energy conditions justifies changing a policy they previously endorsed. A serious debate should compare realistic options, timelines and costs, rather than treating either nuclear power or renewables as a complete answer on its own.

What does this actually mean?

The signatures do not themselves block the proposed law or order any reactor to close. They ask for a vote on the legal change that would permit new nuclear power stations. If the Federal Chancellery confirms enough valid signatures, the electorate will decide whether the ban remains or is lifted.

Why does it matter?

The decision could shape Switzerland’s electricity mix for decades. It will test how the country balances dependable winter supply with the cost and construction time of new reactors, the expansion of renewable energy, and the public’s earlier decision to restrict nuclear power. The result will also show how directly voters can influence a major change in national energy policy.

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