Earlier quoted context omitted.
The previous government didn't stop the shutdown planned 40+ years ago (due to a national referendum), in part because the owners (Vattenfall) said it's not economically feasible to run them anymore without subsidies. It's complex.
The previous anti-nuclear social-democratic government together with the demonstrably insane "green" party installed a board in the state owned power company Vattenfall that after a while managed to sort of claim that it wasn't economically feasible to run the nuclear plants, with the new heavy taxes the social democrats had put in place on nuclear power production. Yay? Anyway, all of that insanity is thankfully his…
Edit: the Swedish green party has promoted renewable power and less dependency on Russian fossile fuels for decades. Not sure why gp calls them insane. Possibly because they consider the Swedish commitments to the Paris agreement important.