As TVs and monitors have gotten bigger, their thirst for electricity has risen as well, with some flat screens sucking down as much as 600 watts of power. Thanks to some clever design work, Vizio Inc.'s 47-in. SV47OXVT display uses just 235 watts, or about as much as the typical 42-in. LCD display consumes. When it's in sleep mode, it uses only 5 watts -- about what a child's night light consumes -- or one-third that of the typical display of its size.
At $1,300, the Vizio unit is about what you'd expect to pay for a display of this size, and it includes goodies such as a bright HD screen, a 120-hertz imaging engine, tuners for both analog and digital broadcasts, and more input connections that you'll probably ever use. If you watch about four hours of TV or DVDs a day, it can save $35 a year in power costs.
Price: $1,400 Estimated annual savings: $35