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Watts Plus computes the approximate electricity cost of running electrical appliances and compares usage scenarios. Enter the cost per kilowatt-hour from your electricity bill, the AC voltage, and power factor. Then enter the watts used by the appliance and the number of hours per day the appliance runs. Watts Plus calculates the electricity cost per hour, day, month, and year.
Enter two such usage scenarios and compare to see how much is saved by switching to an energy saving appliance. Send the comparison results via email to preserve the data and results.
Watts Plus saves the current data for both scenarios when the application exits. There's no need to re-enter data that seldom changes, like voltage and power factor.
Power factor is related to the efficiency of the appliance. Manufacturers do not usually provide power factor, but it can be estimated in order to provide a reasonable approximation of appliance energy cost and savings. Light bulbs typically have a 100% power factor, while electric motors are less, around 80%
© David Holzer
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