All companies featured:

All companies featured: Ameren Corporation (NYSE:AEE), Duke Energy Corporation (NYSE:DUK), McDermott International Incorporated (NYSE:MDR), Fluor Corporation (NYSE:FLR)

All companies featured: Portland General Electric Company (NYSE:POR), NextEra Energy (NYSE:NEE), Energy Transfer (NYSE:ET), Royal Dutch Shell (NYSE:RDS-A)

All companies featured: Portland General Electric Company (NYSE:POR), NextEra Energy (NYSE:NEE), Energy Transfer (NYSE:ET), Royal Dutch Shell (NYSE:RDS-A)

All companies featured: Targa Natural Resources Corporation (NYSE:TRGP), Jacobs Engineering Group Incorporated (NYSE:JEC), Kinder Morgan Incorporated's (NYSE:KMI), Royal Dutch Shell plc (NYSE:RDS.A), ConocoPhillips' (NYSE:COP), Husky Energy Incorporated's (TSX:HSE), Plains All American Pipeline LP's (NYSE:PAA), Exxon Mobil Corporation (NYSE:XOM)

All companies featured: Sempra Energy (NYSE:SRE), DCP Midstream LP (NYSE:DCP), Kinder Morgan Incorporated (NYSE:KMI), Targa Resources (NYSE:TRGP), Tallgrass Energy Partners (NYSE:TEP), RWE AG (FWB:RWE), Anadarko Petroleum Corporation (NYSE:APC), Occidental Petroleum Corporation (NYSE:OXY), Chevron Corporation (NYSE:CVX)

All companies featured: ONEOK Incorporated (NYSE:OKE), Exxon Mobil Corporation (NYSE:XOM)

All companies featured: Dominion Energy Incorporated (NYSE:D), Alliant Energy Corporation (NASDAQ:LNT), General Electric (NYSE:GE), AECOM (NYSE:ACM), Allergan plc (NYSE:AGN)

All companies featured: PPL Corporation (NYSE:PPL), Magellan Midstream Partners LP (NYSE:MMP)

All companies featured: Berkshire Hathaway Incorporated (NYSE:BRK.A), First Solar Incorporated (NASDAQ:FSLR), Enterprise Products Partners (NYSE:EPD)