Dunlap 9-3 A house at 40N latitude has a roof of dimensions 8m by 15m. This area is covered with photovoltaic panels at the optimal fixed angle with an efficiency of 17%. Assuming average sky conditions, what is the annual energy production from this installation? If this electricity were generated by a coal-fired thermal plant operating at 38% efficiency, how much coal would be needed? On the basis of this comparison, wha is the annual reduction (in kilograms) of CO2 that results from this use of photovoltaics