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a) Choose a commercially available solar panel, and spec out a solar array for this community. For size, start with a nameplate capacity of your solar array at 10% the average load of the Some Town.

b) Assume that the installed cost will be 2x the cost of the solar panels (this is very rough, but good enough for our purposes). Calculate the simple payback period. Repeat the calculation for other size arrays (half? double?).

Some Town: Stats

Gross Generation		151,649 MWh

Residential Rate	$0.18 per kWh (average)

Capacity Factor

9.1%

DC System Size

4 kW

Month	Solar Radiation ( kWh / m2 / day )	AC Energy ( kWh )	Value ( $ )
January	0.63	65	12
February	1.10	105	19
March	2.43	258	48
April	3.77	379	70
May	4.69	479	89
June	4.61	450	83
July	4.46	445	83
August	4.14	408	76
September	2.68	266	49
October	1.84	190	35
November	0.85	86	16
December	0.53	55	10
Annual	2.64	3,186	$ 590