Generally Our Electricity Department sends monthly Electricity Bill which shows you have consumed 100 Units or 130 Units of Electricity. What is the 1 Unit In a Electricity bill and how to calculate it.

Electrical Energy is the product of Power and time. If “E” is the Electrical consumed by an appliance having Power rating “P” in time “t’ ,then

E = P x t

The unit of Power “P” is watt and Unit of time “t” is hour, Thus

E = Watt x hour

E = KiloWatt-hour

Commercially One KiloWatt – hour is called the 1 unit of electricity.

Power distribution companies charge the electricity to the consumer on the number of units consumed.

For Example: We have appliance having power rating of 2 kW and we are using the appliance of 2 hours each day. The number of units of electrical energy consumed by the appliance in 30 days

E = 2.5 x 2 x 30 = 150 kWH = 150 Units