So your jet is solar powered?
I don't work for Shell or Exxon, but let's be honest, the green economy hadn't really set us free. Even if we are "energy independent" for the sake of argument, most of our international trading partners aren't.
My point, and the point I think Chuck alluded to is that isolationism sounds great but has never worked historically. Rome, the British Empire and the US following WW II all maintained order in their time. Things usually go downhill when a superpower can't or WONT fill that role.