Energy in Japan refers to energy and electricity production, consumption, import and export in Japan. The country's primary energy consumption was 477.6 Mtoe in 2011, a decrease of 5% over the previous year. While Japan had previously relied on nuclear power to meet about 30% of its electricity needs, after the 2011 Fukushima Daiichi nuclear disaster, all nuclear reactors were progressively shut down for safety concerns. As of January 2022 there are 33 operable nuclear reactors in Japan, of which 10 reactors are currently operating.