Megawatt-hours
A megawatt-hour (MWh) is the amount of energy consumed when one megawatt (MW) of power is used for one hour. It is used to measure large-scale energy production or consumption such as power plants.
Joules
The joule (J) is the SI unit of energy. It is named after the English physicist James Prescott Joule. It is the amount of work done when a force of one newton moves an object by one meter in the direction of the force also known as a newton-meter.