NAME: _______________________________________ DATE: _____________ CLASS: ______________
HOME ENERGY AUDIT: MEASURING ENERGY WORKSHEET
Directions: Answer the questions below in the space provided.Calculate the annual cost to run an appliance for a year.
1. After school each day, Sally uses her computer to do her homework. If she has an average of two hours of homework per night for 180 days of school per year, how many kilowatt-hours are consumed and what is the annual cost of using her computer? A CPU and monitor use 270 Watts.
2. Choose a home appliance that you use and calculate your own energy consumption.
Hours used Per Day: ________
wattage x hours used per day x days used per year = kilowatt-hour (kWh) consumption 1000
Multiply this number by your local utility's rate per kWh (In Denver the cost is 8.9 cents/kWh) to calculate annual cost.
If John uses a window fan (200 watts) 4 hours a day for 120 days per year, how much does it cost him to run his fan per year?
200 W x 4 h/d x 120 d = 96 kWh 1000
96 kWh x 8.9 cents/kWh = $8.16 per year
3. Lighting Dilemma - How much energy/money can be saved by replacing light bulbs with Compact Fluorescent Lights?
A. Search your home and count the number of lights in each room. Each halogen light uses three times the energy and must be counted three times.
4. Reading Electric Meters
Created for the NTEP II program on behalf of the National Renewable Energy Laboratory in Golden, Colorado.