You are to size a grid-connected PV system to deliver 4000 kWh/yr in a location characterized by 5.5 kWh/m2/d of insolation on the array. a. Find the DC, STC rated power of the modules assuming a 0.72 derate factor. b. Find the PV collector area required if, under standard test conditions, these are 18%-efficient modules.

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You are to size a grid-connected PV system to deliver 4000 kWh/yr in a location characterized by 5.5 kWh/m2/d of insolation on the array.

a. Find the DC, STC rated power of the modules assuming a 0.72 derate factor.

b. Find the PV collector area required if, under standard test conditions, these are 18%-efficient modules.

c. Find the first-year net cost of electricity ($/kWh) if the system costs $4 per peak watt ($4/WDC, STC), it is paid for with a 5%, 30-year loan, interest on the loan is tax-deductible, and the owner is in a 29% marginal tax bracket.

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