The former ten-year moratorium on the construction of new nuclear power plants was the result of a citizens' initiative voted on in 1990 which had passed with 54.5% Yes vs. 45.5% No votes. Plans for a new nuclear plant in the Canton of Bern have been put on hold after the accident at the Fukushima Daiichi power plant in 2011. The Swiss Federal Office of Energy (SFOE) is the office responsible for all questions relating to energy supply and energy use within the Federal Department of Environment, Transport, Energy and Communications (DETEC). The agency is supporting the 2000-watt society initiative to cut the nation's energy use by more than half by the year 2050.
What accident caused the delay in plans for the new nuclear power plant in Bern? (If the question is unanswerable, say "unanswerable")
Fukushima Daiichi power plant in 2011