BORKUM, GERMANY - JUNE 23: Wind turbines stand at the nearly completed Riffgat offshore wind farm in the North Sea on June 23, 2013 near Borkum, Germany in front of the jack-up installation vessel 'Bold Tern'. The Riffgat facility includes 30 turbines with a capacity of 3.6 megawatts each for a total output of 108 megawatts, enough to provide power to 120,000 households. Germany is pursuing the construction of offshore wind farms in the North Sea as well as the Baltic Sea, though some projects have been hampered by a lack of adequate undersea cables to bring the power on shore. (Photo by David Hecker/Getty Images)