In this video, Motley Fool energy analyst Joel South gives energy investors three of his picks for stocks to be bullish on in this sector. He tells us about a natural gas pipeline company with a crucial amount of storage in an industry where storage is limited, he gives us an energy services company that's quietly raking it in by saving the big drillers money across the board in efficiencies, and finishes with a larger pipeline company making a big move into rail transport, as it prepares to meet the overwhelming coming demand for takeaway capacity.