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GRAPZOW, GERMANY - OCTOBER 17: A tractor planting seed drives past wind turbines under construction at the Werder/Kassin RH2-WKA windpark on October 17, 2012 near Grapzow, Germany. Germany's electricity network operators recently announced that they will raise the charge to consumers for subsidizing renewable energy investments by 50%. The Werder/Kassin windpark will include 15 Enercon E-126 turbines, which at 7.5 Megawatts are the most powerful onshore wind turbines in the world. The windpark will also use innovative, regenerative hydrogen technology for storing the energy, for which it is being subsidized by the German government, and eventually produce 140 Megawatts, enough for 120,000 households. (Photo by Sean Gallup/Getty Images)

GRAPZOW, GERMANY - OCTOBER 17:  A tractor planting seed drives past wind turbines under construction at the Werder/Kassin RH2-WKA windpark on October 17, 2012 near Grapzow, Germany. Germany's electricity network operators recently announced that they will raise the charge to consumers for subsidizing renewable energy investments by 50%. The Werder/Kassin windpark will include 15 Enercon E-126 turbines, which at 7.5 Megawatts are the most powerful onshore wind turbines in the world. The windpark will also use innovative, regenerative hydrogen technology for storing the energy, for which it is being subsidized by the German government, and eventually produce 140 Megawatts, enough for 120,000 households.  (Photo by Sean Gallup/Getty Images)