Turn off the lights! At least for an hour tonight, at 8:30 P.M. wherever you are. Sure, it's about global warming, but let's use it for ourselves. Why not? An hour without electricity is like a dollar saved. More or less. It depends on how much electricity you use on the average and what your rates are, but turning everything off for an hour can't do anything but save you money, so why not?
As a matter of fact, this might be a good tradition to start. An hour a week without TV, radio, computer, electric lights, dishwashers, clothes washers, dryers, blenders, microwaves, electric stoves... if that sounds restful to you, why not do it? Make it educational for the kids or romantic for the spouse or just a quiet time for yourself.
After awhile, you may want to increase it to an hour and a half, or do it twice a week, or only once a month. Make it work for you and your family so it's just a tiny bit challenging but not too much.