All companies featured: Royal Dutch Shell plc (NYSE:RDS.A), LyondellBasell Industries (NYSE:LYB), Siluria Technologies, Valero Energy Corporation (NYSE:VLO), Suncor Energy (NYSE:SU), Cenovus Energy Incorporated (NYSE:CVE)

All companies featured: Energy Transfer Partners (NYSE:ETP)

All companies featured: NRG Energy Incorporated (NYSE:NRG), SunEdison (NYSE:SUNE), Monsanto Company (NYSE:MON), Westmoreland Coal Company (NASDAQ:WLB)

All companies featured: Total S.A. (NYSE:TOT), Chesapeake Energy Corporation's (NYSE:CHK)

All companies featured: Potash Corporation of Saskatchewan Incorporated (NYSE: POT), Agrium Incorporated (NYSE:AGU), Électricité de France SA (EPA:EDF), ENGIE (EPA:GSZ), Sasol S.A. (NYSE:SSL)

All companies featured: Energy Transfer Partners L.P. (NYSE:ETP), Sasol Limited (NYSE:SSL)

All companies featured: Southern Company (NYSE:SO), Emerson Process Management (NYSE:EMR), Tesoro Corporation (NYSE: TSO)

All companies featured: Enterprise Products Partners (NYSE:EPD), Sunoco Logistics Partners (NYSE:SXL), Whiting Petroleum Corporation (NYSE:WLL), Noble Energy Incorporated (NYSE:NBL), Baker Hughes Incorporated (NYSE:BHI), NextEra Energy Incorporated (NYSE:NEE), Enbridge Incorporated's (NYSE:ENB), Marathon Petroleum Corporation (NYSE:MPC)

All companies featured: DCP Midstream (NYSE:DPM), Phillips 66 (NYSE:PSX), Enbridge Incorporated (NYSE:ENB), Spectra Energy Corporation (NYSE:SE), Williams Partners LP (NYSE:WPZ), Williams Companies (NYSE:WMB)

All companies featured: Noble Energy Incorporated (NYSE:NBL), Southern Company (NYSE:SO), Calpine Corporation (NYSE:CPN), Tennessee Valley Authority (TVA), Xcel Energy Incorporated (NYSE:XEL)