The best solar panels currently available are about 19%
Chapter 9, Problem 9.122(choose chapter or problem)
The best solar panels currently available are about 19% efficient in converting sunlight to electricity. A typical home will use about 40. kWh of electricity per day (1 kWh 5 1 kilowatt hour; 1 kW 5 1000 J/s). Assuming 8.0 hours of useful sunlight per day, calculate the minimum solar panel surface area necessary to provide all of a typical homes electricity. (See Exercise 118 for the energy rate supplied by the sun.)
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