By 2050, Switzerland must have zero net emissions of greenhouse gases. That is the core of a new climate law that voters approved in a referendum on Sunday.
59 percent of those who voted supported the yes side. It was also backed by all major parties except the right-wing populist SVP, which has warned that the law will make energy costs skyrocket.
Switzerland currently imports around three quarters of its energy.
In another poll, 78 percent supported a proposal for a 15 percent minimum tax for multinational companies.