Edwin Pawlowski wrote:
I see you got plenty of good information, but let me add a bit more.
Don't be too quick to change all of your lights. If you have a bulb
that gets just a few minutes of use a month, just leave it until the
bulb burns out. I have on light in my basement that is rarely used
and I don't recall ever changing the bulb. Potential energy savings
are offset by the cost of the CF replacement.

Of course some people believe that reduced energy usage doesn't have to be
about saving *me* money. Reduced energy usage is a positive thing on its
own. If you save some money at the same time, great, but that does not have
to be the only motivation.