The door can be heavy but usually uses counterweights or springs so that the motor isn t lifting a 300 lbs.
How much electricity does an electric garage door use.
Time how long the motor runs when it opens then closes the door.
It s opened with a 1 2hp induction motor.
So one cycle open or close consumes 343 watts for 10 seconds comes out to be 57 watt minutes 95 watt hours.
But there s a catch.
Figure that a small electric motor like the one that operates your garage door consumes somewhere between 500 and 1 000 watts of electricity.
So how much energy does my garage door opener burn when on standby.
I have a double wide door.
Not enough to notice.
Most door openers have cycle of only a few seconds.
It takes say 10 seconds to open or close.
A garage door opener has a radio receiver garage lights and a motor to lift the garage door.
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.
Door from a dead stop.
The amount of energy that a garage door opener uses is very small.
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.
Like everything else this answer is heavily dependent on the make and model.