It's not a rant against the excesses of the wealthy, it's a rant against the hypocrisy of Al Gore. Nothing new really, it's been known since http://www.snopes.com/politics/bush/house.asp
Gore's new villa is in Cali, so it probably gets some power from wind/solar, but judging from past actions it's unlikely he's paying the premiums to get all green energy.
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