Speaking to reporters after Monday's talks, Nishimura said the U.S. side reacted positively to the recent change of Japan's policy to boost decarbonization.The Japanese government said last month in a change from its post-Fukushima crisis nuclear energy policy that it may renew old nuclear reactors if necessary."We will explore opportunities for collaboration (with the United States) to make full use of existing reactors and create stronger supply chains," said Nishimura, who serves as minister of economy, trade and industry.The statement said the two governments agreed to maintain a consistent regulatory environment for all energy sources in response to the impact of Russia's war on Ukraine.Nishimura and Granholm agreed on the importance of the Group of Seven industrialized nations taking concerted efforts this year under Japan's G-7 presidency to expedite clean energy transitions and ensure energy security consistent with the achievement of net-zero emissions by 2050, a target set in the U.N. climate action road map."