In India, the term "unit" on an electricity bill is synonymous with "kilowatt-hour" (kWh). One unit is equivalent to one kilowatt-hour, which means consuming one kilowatt (kW) of power for one hour.
For example, if you use a 1,000-watt (1 kW) appliance continuously for one hour, you would have consumed one unit of electricity, which is equal to 1 kWh.
When you receive an electricity bill in India, the consumption is usually measured and presented in units (kWh). The total units consumed during a billing period are used to calculate the total amount payable. The electricity rates per unit vary depending on the state and the tariff category under which the consumer falls.
To calculate your electricity consumption, simply refer to the number of units (kWh) mentioned on your bill and multiply it by the applicable electricity rate to find the total cost for that billing cycle.