On average, the television and ancillary devices that go with it (DVD player, cable box, etc.) account for about 8 to 10 percent of a household's overall energy bill. One way to help cut electric waste is always make sure to turn the TV off when it's not being used. But one not-so-obvious tip is to reduce the brightness of the television. By going to the settings function and reducing the brightness level, you can help make your TV more energy-efficient. Most manufacturers pre-set their TVs with the highest brightness setting possible. A simple switch can help you save money without any real noticeable difference in viewing quality.