Time how long the motor runs when it opens then closes the door.
How much electricity does an electric garage door use.
The door can be heavy but usually uses counterweights or springs so that the motor isn t lifting a 300 lbs.
Running the opener for twenty seconds or so ten times a day won t use as much energy as leaving a 100 watt light bulb on all day.
Because these electrical appliances operate for only a few minutes per day they don t use much electricity to open and close your garage door.
So how much energy does my garage door opener burn when on standby.
But there s a catch.
Not enough to notice.
Most door openers have cycle of only a few seconds.
Most garage door openers use three to five times more energy during the 1 437 minutes per day when they are off than they do during the 3 minutes per day when they are on.
I have a double wide door.
When several different models were tested the annual energy use varied anywhere from 15 8 kwh to 127 0 kwh or 2 to 16 per year.
Door from a dead stop.
So one cycle open or close consumes 343 watts for 10 seconds comes out to be 57 watt minutes 95 watt hours.
It takes say 10 seconds to open or close.
It s opened with a 1 2hp induction motor.
A garage door opener has a radio receiver garage lights and a motor to lift the garage door.
Like everything else this answer is heavily dependent on the make and model.