Causes of High Summer Utility Bills
- All the lights in the house are on. In most homes, lighting only accounts for about 6 percent of the annual electric cost, but these costs can add up. Keep up the habit of turning off lights when you leave a room.
More than 99 percent of the electric energy provided to incandescent lights is converted to heat and less than 1 percent to light. Switching from incandescent to compact fluorescent lights (CFLs) reduces heat output from each light to about 1/4 the former level. Reducing heat helps a lot in the summer. If you're reading by a lamp in a room cooled to 78F, you'll feel noticeably cooler sitting under a CFL.
Outdoor area lights are on all through the day. This is probably caused by a bad photocell.