Prime Minister Naoto Kan says Japan needs to reverse its policy on nuclear power and gradually phase out nuclear power. He told a televised news conference: " We should aim to have a society that does not rely on nuclear power. In the future, we should have a society that can carry on without nuclear reactors." Nuclear energy provides about 30% of Japan's energy supply. Saying that the Fukushima nuclear plant disaster has changed his thinking about nuclear power, he added: "I have come to realize that this is a technology that cannot be controlled by previous safety measures."