What are Megawatt-hour (MWh) and kilowatt-hours (kWh)?
A megawatt-hour (MWh) is a unit of measure of electric energy. A MWh is 1,000 kilowatt-hours (kWh). An MWh is the amount of electricity generated by a one megawatt (MW) electric generator operating or producing electricity for one hour. On an electric bill, electricity usage is commonly reported in kilowatt-hours. Ten 100 watt light bulbs left on for on hour use one kWh of electricity and at an electric rate of 11.5 cents per kWh this costs 11.5 cents.