1. What Does It Cost to Run a Dishwasher exactly?

2. The Cost of Electricity
Price changes throughout the day to reflect demand
Peak times are more expensive
Operating cost =
power used x time x cost of electricity
The Cost of Electricity

4. EnerGuide Label
Lets the consumer see how much energy the device uses in a year
Allows for informed decisions about purchases

6. What does it cost to operate a 1200W dishwasher for 2 hours, if electricity costs $0.065 per kWh?
What will the cost be if
you run the dishwasher
during On-Peak hours?
An Example:

7. Given: Power = 1200 W, time = 2 h
Cost = $0.065 / kWh
Required: Operating cost
Analysis: C = P x t x c
Solution: C=1.2kW x 2h x 0.065/kWh
= $0.156
= 16 cents
Statement: It costs 16 cents to run the dishwasher.
(**keep in mind, there is dishwasher detergent to add as well!)

8. Run the dishwasher during On-Peak hours?
Given: Power = 1200 W, time = 2 h
Cost = $0.132 / kWh
Required: Operating cost
Analysis: C = P x t x c
Solution: C=1.2kW x 2h x 0.132/kWh
= $0.3168
= 32 cents
Statement: It will cost 32 cents to run the dishwasher during On-Peak hours.
Run the dishwasher during On-Peak hours?

9. What is Time-of-Use exactly?

10. Huh? What does this mean?

11. Your task:
Electricity in the Home: Practical Issues