If you own a treadmill, you may wonder how much electricity a treadmill uses. This will depend on a number of factors, such as how many hours you use it, and how fast you run. Whether or not your treadmill has an incline will also impact its power consumption. If you are a heavy user, you'll be using more energy than someone who is a light jogger. The average treadmill will use around 1.5 kilowa..