How much energy you use is the most important figure on your bill and almost all other line items are based on this value. The amount of energy used in your residential or commercial property depends on many things including what the outside temperature is, what type of appliances you use, how efficient your appliances are, how often you use them, and so on.
Each person and residence uses power differently, but your electrical meter is set up to measure how much total power your home has used over the month. This energy value is measured in kilowatt hours (kWh) and is essentially the amount of energy consumed when something uses 1,000 watts of energy for one hour.