Nuclear Energy Data is the OECD Nuclear Energy Agency's annual compilation of statistics and country reports documenting the status of nuclear power in the OECD area. Information provided by member country governments includes statistics on installed generating capacity, total electricity produced by all sources and by nuclear power, nuclear energy policies, fuel cycle developments, and projected generating capacity and electricity production to 2035, where available. Following the accident at the Fukushima Daiichi nuclear power plant in March 2011, total nuclear generating capacity and electricity generation declined, principally because of the permanent shutdown of 12 reactors (8 in Germany and 4 in Japan) and the prolonged shutdown of reactors in Japan. The Fukushima Daiichi accident also prompted safety reviews of existing nuclear facilities and led some governments to adopt nuclear phase-out plans. Other governments remained committed to maintaining nuclear power in the energy mix, in some cases pursuing plans to either increase nuclear generating capacity or, as in the cases of Poland and Turkey, to add nuclear generating capacity for the first time. Further details on these and other developments are provided in the publication’s numerous tables, graphs and country reports.