Ukraine has been a net energy exporting country, for example in 2011, 3.3% of electricity produced were exported, but also one of Europe's largest energy consumers. , 47.6% of total electricity generation was from nuclear power The largest nuclear power plant in Europe, the Zaporizhzhia Nuclear Power Plant, is located in Ukraine. Until the 2010s, all of Ukraine's nuclear fuel was coming from Russia. In 2008 Westinghouse Electric Company won a five-year contract selling nuclear fuel to three Ukrainian reactors starting in 2011. Following Euromaidan then President Viktor Yanukovych introduced a ban on Rosatom nuclear fuel shipments to Europe via Ukraine, which was in effect from 28 January until 6 March 2014. By 2016, Russia's share was down to 55 percent, Westinghouse supplying nuclear fuel for six of Ukraine's VVER-1000 nuclear reactors. After the Russian annexation of Crimea in April 2014, the National Nuclear Energy Generating Company of Ukraine Energoatom and Westinghouse extended the contract for fuel deliveries through 2020.