A photovoltaic panel with an efficiency of 19% receives an average insolation equal to theaverage worldwide average insolation on a horizontal surface. This panel is used with anappropriate storage system (100% efficient) to meet the average household electricity requirements

Required:
a. What is the required area of the panel?
b. What is the annual savings in CO2 emissions compared to the same amount of electricity supplied by 40% efficient coal-fired generating stations?