Because it uses LEDs rather than a traditional high-pressure lamp, the PF 1000U uses a lot less power.
Using a Kill A Watt P4480 power meter, I measured its draw at 87.2 watts in Standard mode. That’s one-quarter of most proejctors in its class (but, of course this projector is only about 1/3 as bright as lamp powered competitors) and not that much more than what a typical incandescent light bulb uses. When it’s idle, but plugged in, the projector draws just 0.2-watts of power.
If it’s used for an average of five hours a day and power costs the national average of 12-cents per kilowatt-hour, expect that it will cost a little over $19 a year to use. This makes it one of the cheapest projectors to operate because rather than having to periodically spend a couple hundred dollars on a lamp (every 2-4 years at 5 hours a day), the PF 1000U’s lighting engine is rated to last for 30,000 hours.