How much you pay for your business' electric utility bill is determined by a number of factors. Most of us are familiar with actual electric consumption being a factor, but many are unaware of an equally important factor called peak demand. Peak demand is the greatest amount of electrical consumption your building requires at any single point in time. The more electric consuming devices and systems you have running at the same time, the higher your demand. More importantly, devices containing power supplies, compressors, motors, or pumps require a higher initial amount of electric to operate until they are up to speed or capacity. An example would be an air conditioner or furnace. On the air conditioner the compressor has to power up along with a motor for the blower which pushes the cooled air through your ducts. With the furnace, even gas furnaces has blowers to push the heated air through the ducts.