European Energy Executives Speak At The Eurelectric Annual Convention [Getty Images]

Peter Terium, chief executive officer of RWE AG, speaks during the Eurelectric annual electricity conference in Bologna, Italy, on Monday, June 3, 2013. The European Union's regulatory arm reiterated it doesn't have to start selling 100 million carbon permits from a special reserve soon, as proceeds from the sales need to be awarded to clean-energy projects only by mid 2014. Photographer: Alessia Pierdomenico/Bloomberg via Getty Images

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