The oil and gas industry has had its share of ups and downs throughout the years, including several recent down years in a row. That said, the sector still has the potential to fuel explosive returns for investors who know where to look. A good place to start is with Golar LNG (NASDAQ: GLNG), Clean Energy Fuels (NASDAQ: CLNE), and Energy Transfer Partners (NYSE: ETP). Here’s why these stocks could deliver needle-moving returns for investors in the coming years.