Q1) A small city operates by a natural gas power plant. The natural gas power plant consumes 249,808 m^3 of natural gas yearly to cover the city demand. Calculate the following: A) The city demand in kWh per year. B) The cost of energy for this city in $ per year. C) The cost in $ of 1 kWh for this natural gas power plant. The installation of 1 Watt solar system costs $3, given that the average peak sun hours are 6 hours, the solar system is warrantied for 20 years, and the efficiency of the system is 90%. calculate the following: D) The solar system power rating needed to replace the natural gas power planet. E) The net cost of the system. F) The price per kWh for this solar system. Calculate the payback period for the PV system G) Simple payback period. H) Discounted payback period (You do not need to write the table, only write the installation cost, the cash inflow, and the discounted cash inflow equation) Data: -1 cubic meter of natural gas produces 4.79kWh. The cost of 1 m^3 of natural gas is $0.2602 -1 kWh produced by natural gas costs $0.0543