Key findings of the 2013 edition include:a record drop of nuclear electricity generation in the world in 2012 ++ Rapid aging of nuclear power plants: almost half of the world fleet has operated for at least 30 years ++ In 2012, for the first time, China, Germany, India and Japan generated more power from renewables than from nuclear plants ++ Water management at the Fukushima site is critical, with an estimated 400,000 tons in precarious storage, containing many times more radioactivity than was released to the air in the weeks after 11 March 2011.