In the video below, Motley Fool contributor Sara Murphy discusses a huge liability that is sitting on many energy companies' balance sheets. Most investors are missing it completely. Are you?

Sara Murphy has no position in any stocks mentioned. Follow her on Twitter @SMurphSmilesThe Motley Fool recommends Statoil (ADR). 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.