9. Assume that you have just moved into Davis, you will be staying for five years, and that you are indifferent between the present and future value of money (discount rate of 0%). Available rooftop surface: 1.8 m2 Average daily availability of solar energy: 5 hours Average solar radiation: 1.000 W/m2 Solar Electricity efficiency: 15% Average electricity price: $0.169/kWh Average California electricity grid emissions: 250 g CO2/kWh a. Calculate the savings you would earn by installing rooftop solar PV on your house b. Re-calculate the savings you would earn assuming a discount rate of 10% c. Determine the CO2 emissions that could be avoided by installing rooftop solar on your house