Christine,
A good friend of mine in VA has a blue, and she's a doll. Like spoiled kids, any animal can be trained to "be bad."
But on the electric, there is so very much that affects your electric bill. The KWH charge is the start. I'm with CL&P and at 12cents per KWH. Other generation companies get down to 10cents, which would be about 15% savings on the generation charge (but no the fees or the delivery charges, which are nearly as much as the stupid generation charges).
Heat - Electric heat versus oil heat versus natural gas heat. Even if the heat is not electric, there are different system designs that use more or less electric to run. The typical oil or natural gas furnaces use little electricity other than the power to turn the blower (to circulate the hot air). I have a newer house that was built "cheaper" by eliminating the chimney adn using a "power vent" to suck the exhaust fumes out of the furnace instead of allowing the natural draw from a chimney. This saves money in construction, but costs more to operate. the vent turns on and runs before the furnace starts, and continues to run for 5 minutes after the furnace shuts off. Ugh.
Insulation - a well insulated house uses less heat because it loses less heat.
Lights - leaving lights on can slowly draw the electricity over time. A single 60W bulb for 12 hours a day costs $2.50 a month. Run a few of them, and it adds up. I've converted a number of bulbs at my house to power compacts simply because I cannot get my wife to turn off lights. :lol: We have two pendants over the island and a 3-bulb chandelier over the breakfast table that gets left on ALL the time.

I replaced those five 60W bulbs with five PC's that use 13W each. That is 65W as compared to 300W!! And the amount of light is not a problem either.
Check out the calculator on the main page to see what things cost to run.
http://www.reefcentral.com/index.php/tank-electrical