All companies featured: Pioneer Natural Resources Company (NYSE:PXD), Devon Energy Corporation (NYSE:DVN), Anadarko Petroleum Corporation (NYSE:APC), Apache Corporation (NYSE:APA), Continental Resources Corporation (NYSE:CLR), Occidental Petroleum Corporation (NYSE:OXY), Statoil ASA (NYSE:STO), INPEX Corporation, Total S.A. (NYSE:TOT), CPC Corporation Taiwan, Tokyo Gas Company Limited, Osaka Gas Company Limited, Kansai Electric Power Company Incorporated, Chubu Electric Power Company Incorporated, Toho Gas Company Limited, Statnett SF, Dong Energy AS, Comision Federal de Electricidad, Duro Felguera, Elecnor de Mexico, Siemens AG (FWB:SIE), Gamesa Corporation Technology S.A. (MCE:GAM)