# science

The average solar radiation incident on the surface of the earth is about 1 KW/m2 for the entire year. A solar house is built with solar panels installed in the roof to provide the heating and electrical energy of the house. If the roof has a surface area of 100 m2 and the panels are installed over the entire roof, will the solar panels be able to provide enough energy to meet the heating and electrical energy demands for the house for the entire year. The total time of available sunlight for energy production is 1000 hours for the entire year. If so, explain how?

Note: The average electrical energy demand for the house is 15,000 KWh for the year. It takes about 1000 gallons of fossil fuel with a heating value of 15,000 Btu/gallon to provide heat to the house for the entire year. ( 1 Btu = 0.000293 KWh)

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