our home kicks the asses of other homes

So I did an energy audit after getting a nice letter from PG&E (our local energy provider). And apparently we're doing our part in leaving a small energy footprint upon the world. Compared to similarly sized homes in our neck of the woods, we're paying about $500 less annually in utility bills than the average household - which is great and all, but my question is, what is everyone else doing that we're not?!!

So instead of installing solar panels, which I thought would be a really cool thing to do, I think I'll work on getting a hot tub, central air conditioning, a xenon porch light, and a Tesla coil.