Figure total square footage of the roof: 3031.88 ft2
Using 3 x 5 foot panels you would need to figure the total area of one panel: 15 ft2
Each panel generates 200watts/panel.
Therefore, Roof square footage/ square footage of one panel= 202.125 panels= 201 panels
X panels multiplied by 200watts/panel = how many watts generated?: 40,200 watts
Take the total watts and divide by 1000 to determine Kw: 40.2 Kw
Multiply that number by 1200 which is a constant used in this formula to give us the Kilowatts that will be generated by solar panels on your roof: 48,240 Kw
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