How To Calculate Your Electricity Bill For Commercial Facilities Here’s an example of how to calculate your energy bill manually: step 1. find the electric appliance's wattage and estimated monthly use in hours. the first thing that we need to do is to see how to calculate your power usage. find the wattage and estimated monthly use of every electrical appliance you want to measure. To calculate total supply charges, you can multiply your electricity rate by your usage. for example, a customer who uses an average amount of electricity and pays the average utility rate can calculate their approximate utility costs by multiplying those two values: $0.12 per kilowatt hour (kwh) x 908 kwh = $108.96.
City Of Missoula Utilities How To Read Your Bill Kilowatt hours (kwh) is the amount of electricity you consume in your home in a month. one kilowatt hour is equal to the amount of electricity used by a 100 watt light bulb burning for 10 hours. your kwh rate is the amount your provider charges for the electricity you consume. Electricity rate (dollars per kwh) x electricity usage (in kwh) = electricity cost. here's a step by step example of how to calculate your electricity cost: find your electricity rate on your electric bill. for example, the average kwh price in the u.s. is $0.17 per kwh. Divide that wattage by 1,000 to get your appliances energy use in kilowatts. multiply kilowatts by the average amount of hours the appliance is in use. multiply that number by 30 days to calculate the average kwh your appliance uses each month. multiply that number by your kwh rate to estimate your electric bill for the month. Once you have your data, calculate the cost of use with this formula: multiply the device’s wattage by the number of hours the appliance is used per day. divide by 1000. multiply by your kwh rate. for example, if you have a 150 watt television that you watch 5 hours per day, it consumes 750 watt hours per day (150 x 5 = 750).
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