Which among the following is the commercial unit of electrical energy?

Electrical energy is the energy that emerges from the movement of an electric charge.

The SI unit for electrical energy is the joule.

Kilowatt-hour: This energy measuring unit indicates the energy utilized in a circuit at one kilowatt per hour for one hour.

The commercial unit of electrical energy is kilowatt-hour (kWh).

$1\text{ kilowatt hour }=3.6\times {10}^6\text{ joule. }$

Electric power is the rate at which electrical energy is consumed in a circuit.

The watt is a SI unit of measurement.

One kilowatt is equal to 1000 watts.