Power:Power refers to the rate at which work is done or energy is transferred. It is measured in watts.
Joule (J): The joule is the unit of energy in SI. It represents the amount of work done when a force of one newton moves an object one meter in the direction of that force.
Kilowatt-hour (kWh): Kilowatt-hour is a unit commonly used for measuring electrical energy consumption. It represents one kilowatt of power used over one hour.