From left, EU Joint Research Centre's director general Dominique Ristori, Japan's Economy, Trade and Industry Minister Toshimitsu Motegi, Germany's Economy and Energy Minister and deputy chancellor

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From left, EU Joint Research Centre's director general Dominique Ristori, Japan's Economy, Trade and Industry Minister Toshimitsu Motegi, Germany's Economy and Energy Minister and deputy chancellor Sigmar Gabriel, France's Ecology and Energy Minister Segolene Royal, Italy's Economic Development Minister Federica Guidi, Britain's Secretary of State for Energy and Climate Change Edward Davey, U.S. Secretary for Energy Ernest Moniz and Canada's Natural Resources Minister Greg Rickford pose for a photo on the occasion of the G7 meeting for Energy in Rome, Tuesday, May 6, 2014. (AP Photo/Riccardo De Luca)

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Associated Press
Tue, May 6, 2014 5:46 PM EDT