Name:______________________________________________ Date: ______

Graph Energy Costs per Appliance

Chart based on electric cost of:  7 cents per kilowatt hour

Appliance Wattage Usage (kWh) per Month Cost :  (KwH/month) x .7
Hair Dryer 1,000 4 0.28
Dishwasher 1,200 35 2.45
Computer 800 50 3.50
Microwave 1,000 15 1.05
Radio/Stereo 50 20 1.40
Refrigerator 550 50 3.50
Television 300 40 2.80
Blender 700 12 .84


**Create a BAR GRAPH comparing the cost of each appliance

graph


Analysis

1.  How is the monthly cost of each appliance calculated in this example?

 

2.  How would the cost of your stereo change if the electric company raised rates to .10 per kWh

 

3.  How can you reduce the cost of your household’s electric bill?

 

4. An oven uses 2.3 kW/hr with an estimated cost of $0.25/hr for running the oven at 400 degrees. How much would it cost to cook a turkey for Thanksgiving it it takes 6 hours to cook it.