No it will not "use" any electricity. If you're looking to reduce your wattage consumption, try wrapping your water heater and if it's electric, install a timer. All your "surge protectors" use electricity even if you have what ever you have plugged into them, turned off. How many clocks do you have in your house? How many "cordless phones? How many modems do you have? All these pieces of "utilization devices" one by one does amount to anything to be concerned with. However, when you put a "bunch" of them together, over a month's time, you would be surprised on just how much you're paying for "convenience". Anything that has a light on it is using electricity. How about your smoke detectors? Are they hard-wired or battery operated? Do you have outside lights that are on a timer? Timers use electricity. ( W/H timers use it ,too, not as much as a W/H) Just take some time and go sit in each and every room of your house 5-10 minutes. Look around it. You might be surprised on what is on in an "empty" room. Do it again at night. Just many little lights do you see?
Then conduct an experiment: When ever you leave your house and your going to be gone for more than an hour, turn the main breaker off. Does that set off your security system? There's another one that on all the time and you never think about it. All of this is just "Food for thought". Hope it helps.
Electrician since 1977