60 watts 0.6 cents This table assumes that a kilowatt-hour of electricity costs 10 cents, which is an average rate depending on your location. If your house has electric heat, then the middle of winter is a time when you are going to use a lot of power. A heat pump might run 10 to 15 hours a day. Over the course of a month that's several hundred dollars worth of electricity. The same applies in the summer if you use the air conditioner a lot.
Water heating uses a good bit of power as well.
When you take a shower or run a load of clothes in the washer, the electric water heater might run for an hour re-heating the water in the tank. That's 40 cents. A typical household can burn several dollars a day heating water. Refrigeration is another big power drain because the refrigerator can easily run for 10 hours a day. Then we get to to light bulbs.