How many kilowatt hours of electricity will the solar panels generate in 20 days?
by admin on Monday, May 23rd, 2011 | 2 Comments
A house with a south-facing roof has photovoltaic panels on the roof. The photovoltaic panels have an efficiency of 10.3 % and occupy an area with dimensions 3.35 m by 8.55 m. The average solar radiation incident on the panels is 305 W/m2, averaged over all conditions for a year. How many kilowatt hours of electricity will the solar panels generate in 20 days?
area is 28.64 m²
incident power is 305 W/m² x 28.64 m² = 8740 watts
output power = 8740 watts x 0.103 = 900 watts
900 watts x 24 hr/day x 20 days = 432000 watt-hour / day or 432 kW-hour / day
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area is 28.64 m²
incident power is 305 W/m² x 28.64 m² = 8740 watts
output power = 8740 watts x 0.103 = 900 watts
900 watts x 24 hr/day x 20 days = 432000 watt-hour / day or 432 kW-hour / day
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References :
It will generate 7.44 kWh per Square meter of photovoltaic panel per day.
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