Become a miser in the home and use daylight as much as possible! Daylight is free and does not pollute! Many tasks, reading, writing, studying, sewing, can be done quite comfortably by the light of the window!
Lighting the bulb during daylight hours uses an additional 438 kilowatt hours of electricity.
Since it takes approximately 394 pounds of coal to keep a single 100-watt incandescent light bulb burning for twelve hours each day for one year, learn to use sunshine as much as you can. Turn into the Miser of Bulbs!
From: Save Our Planet by Diane MacEACHERN