![]() ![]() Appliance: _ Wattage: _ Hours used Per Day: _ You can determine wattage, voltage and current Choose a home appliance that you use andĬalculate your own energy consumption. Per night for 180 days of school per year, how many Kilowatt-hoursĪre consumed and what is the annual cost of using her computer?Ī CPU and monitor use 270 Watts. If she has an average of two hours of homework ![]() ![]() PROBLEMS TO SOLVE After school each day, Sally uses her computer = 96 kWh X 8.9 Cents/kWh = $8.16 per year Is 8.9 cents/kWh) to calculate annual cost.ĮXAMPLE If John uses a window fan (200 watts) 4 hoursĪ day for 120 days per year, how much does it cost him to run Your local utility's rate per kWh consumed (In Denver the cost Now let's calculate the annual cost to runĪn appliance for a year. Below is a list of someĬommon household items and the wattage used for each. VCR's, televisions, stereos, computers and increase the appliance'sĮnergy consumption a few watts per hour. Adjusting volume or changing settings can affect theĪctual amount of power consumed. On the nameplate, which means the product has been tested to safety The maximum power drawn by the appliance. Middle School Home Energy Audit MEASURING ENERGY USAGEĭo our appliances use? You can usually find the wattage of mostĪppliances on the nameplate on the back or bottom of the appliance. ![]()
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