Explanation:Electricity usage is calculated in kilowatt-hours. A kilowatt-hour is 1,000 watts used for one hour. As an example, a 100-watt light bulb operating for ten hours would use one kilowatt-hour.
How to calculate electric usage cost:
1. Volts x Amps = Watts
2. Watts ÷ 1,000 = Kilowatts (kW)
3. Kilowatts (kW) x Hours of Use = Kilowatt Hours (kWh)
4. Kilowatt Hours (kWh) x kWh rate = Cost of Usage
5. Add TVA Power Cost Adjustment charge per kWh
Below are some examples of electrical appliances found in most homes. These examples are using a 10 cents per kWh rate.