As Robert Heinlein put is so succintly, TANSTAAFL.
Why Drill Here, Drill Now is not just a political slogan but necessary for the continuation of civilization as we know it and carbon taxes are the ruination of us all. Mostly Cajun explains the real world of energy and why expecting to replace "fossil fuels" anytime soon is as naive as expecting Obama to be honest about his agenda.
Read the whole thing. And the comments.
Damn those Laws of Thermodynamics!