Don't forget to turn thermostat on water heater down (I think to 125). We bought a timer & hooked it up to the water heater so that it is off during non-peak times. Ours has capability for 2 sets of times - saves!
If you have multiple freezers, see if it will all fit in 1 or 2 (and if a 2nd one is needed - try a smaller newer one - it will be more efficient).
Florescent lighting is supposed to be cheaper. Guess the Electric Company found out & that's why the prices went up again... Personally, I like the regular bulbs. Even though I outfitted my entire house w/florescent, I'm starting to use regular bulbs occasionally (they are better for you). Oh. I get SAD in winter, so I use Daylight bulbs whenever/wherever possible.
Caulking around windows & doors before winter, using rugs/towels @ base of doors always helps.