FILE - In this Oct. 12, 2012, file photo the sun rises behind electricity poles and wind turbines in Nauen, near Berlin, Germany. Stephan Kohler, who heads the government-affiliated agency overseeing Germany's electricity grid, said Monday, Oct. 29, 2012, the current strong expansion of wind, solar and other renewable power sources will easily top the official target of 35 percent by 2022. (AP Photo/Ferdinand Ostrop, File)

Associated Press
FILE - In this Oct. 12, 2012, file photo the sun rises behind electricity poles and wind turbines  in Nauen, near Berlin, Germany. Stephan Kohler, who heads the government-affiliated agency overseeing Germany's electricity grid, said Monday, Oct. 29, 2012, the current strong expansion of wind, solar and other renewable power sources will easily top the official target of 35 percent by 2022. (AP Photo/Ferdinand Ostrop, File)
FILE - In this Oct. 12, 2012, file photo the sun rises behind electricity poles and wind turbines in Nauen, near Berlin, Germany. Stephan Kohler, who heads the government-affiliated agency overseeing Germany's electricity grid, said Monday, Oct. 29, 2012, the current strong expansion of wind, solar and other renewable power sources will easily top the official target of 35 percent by 2022. (AP Photo/Ferdinand Ostrop, File)
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