There are few certainties in life, but one thing is clear: The way we generate and consume energy is going to be really different two decades from now than it is today. In the video below, Motley Fool contributor Sara Murphy talks about two companies that are at the leading edge of an energy paradigm shift.

Sara Murphy has no position in any stocks mentioned. Follow her on Twitter @SMurphSmiles. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.