In Summary. A projector uses more electricity than an HDTV. It can use less electricity than an HDTV but only because most people use the HDTV more often than the projector. In terms of raw wattage, a projector requires as much electricity as possible in order to power up its lamp.

Are projectors energy efficient?

In general it can be said that the more lumens per watt a projector has, the more energy-efficient it is. The Optoma model in our comparison has an operating wattage of 250W with 4000 lumens. That makes 4000 lumens/250W = 16 lumens per watt. ... That being said, LCD projectors tend to be more energy-efficient.

Should I leave my projector plugged in?

3. Do not unplug the projector after powering down. ... If the projector is unplugged right after it is turned off, damage to the lamp can occur and make the lamps life much shorter. Keep the projector plugged in for at least another 3 minutes after powering down.