Japanese Prime Minister Naoto Kan pledged on Wednesday to double the amount of electricity supplied by renewable energy in the 2020s, as he reviews the role of atomic power following Japan's nuclear disaster.
Kan said he wanted to boost renewable energy to 20 percent of the country's electricity supply, from 10 percent currently.
Kan also promised in a prepared speech to members of Organisation for Economic Co-operation and Development to cut costs of solar power generation to one-sixth of the current level by 2030.
Solar generation cost is currently around 50 yen ($0.610) per kilowatt hour.
Kan has called for a blank-slate review of the country's current energy policy, which aimed, before the Fukushima disaster, to increase nuclear power to more than 50 percent of electricity supply by 2030 from about 30 percent now.