Japan is mulling setting the proportion of electricity to be generated by nuclear power at around 15 to 20 percent in 2030, lower than the 28.6 percent in fiscal 2010 before the Fukushima nuclear disaster, government officials said Thursday.

The government will also consider providing ranges to the proportions of nuclear power and renewable energy to avoid setting clear percentages amid strong antinuclear sentiment, the officials said.

Prime Minister Shinzo Abe's government has pledged to reduce the country's dependence on nuclear power and introduce clean energy as much as possible, while placing nuclear power as an "important base-load power source" despite the nuclear accident.