All companies featured: Duke Energy Corporation (NYSE:DUK), SCANA Corporation (NYSE:SCG), Southern Company (NYSE:SO), Tennessee Valley Authority (NYSE:TVE), Entergy Corporation (NYSE:ETR), OGE Energy Corporation (NYSE:OGE), General Electric Company (NYSE:GE), NextEra Energy Incorporated (NYSE:NEE), Xcel Energy Incorporated (NASDAQ:XEL), Exelon Corporation (NYSE:EXC), Avista Corporation (NYSE:AVA).