Does your home have a digital power meter? Check with your power company. If they have different rates depending on the time of day then running appliances like clothes dryers and dishwashers while your sleep will make a difference in your bills
What other appliances in your home Draw a lot of electricity? The water heater is one of these. Depending on your power company's rate schedule, take showers at night instead of the morning.
Did you just full a hot tub with cold water? Let it do it's initial heat up over night instead of during the day when rates are highest.
If you liked this idea then you might like my book, 100 Ways to Save a Dollar without Lowering Your Lifestyle, available for Kindle, all other e-book formats, and in paperback. One of the many items you'll find in it is a handy table telling you what in your house draws a lot of power and what doesn't.
