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Most places in the US have what we call 4-5 'full sun hours' per day, which takes into account weather and seasonal shifts. So if you need 3300kwh per month, you'd need about 110 kw-hrs per day / 4.5 sun hours /day = 24 kilowatts. 24 kilowatts equals 24,000 watts, and you divide by .80 for efficiencies and voltage losses = 30,000 watts. so 30,000 dvidided by 250 = 120 panels.

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15y ago

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