1. A family of five is planning to install solar panels on the roof of their home to help reduce the cost of electricity and save energy to help the environment.

• The family plans to install 10 panels, each has a power rating of 6.0x10² Watts.
  1. Determine the total amount of power produced by installing all the panels. Convert the power from Watts to kiloWatts. [2]

1. How much solar energy will all the panels transform into electrical energy daily (24 hours period)?

(Use kW of power in the calculation instead of Watts and h for time instead of seconds, as a result your answer will be in the unit called (kWh) instead of Joules. kWh is how electricity is measured for our bills). [3]

Assume the average cost of electricity supplied from the grid is $0.213/kWh. How much would this same amount of electrical energy in part (b) cost if they were not using solar panels?