Speaking of conservation... When I bought my house five years ago, I made it a point to purchase only CF tubes instead of incandescent bulbs. Aside from the fact that these bulbs last for years, not months, they also burn cooler (and thus they don't heat your house in summer). Every four CF bulbs use the electricity of one standard tungsten bulb.

If everyone switched to CF bulbs, there'd be less coal burned in the power plants and more spare capacity for the day that PHEV cars become viable for the mainstream buyer.

Just my two-cents on the subject