Production question?

poleikleng
poleikleng Solar Expert Posts: 29 ✭
in General Solar Power Topics #1
Is this a correct way to determine the kWh per day an array will produce?
Using PVwatt default derate of .77, 3.68 kW DC array, 30 degree fixed tilt, location southeast Massachusetts

Solar
Radiation
(kWh/m2/day) May: 5.32 x AC rating 2.83 kW =15.05 kWh?

Poleikleng
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  • Frxddy
    Frxddy Solar Expert Posts: 113 ✭✭✭✭
    #2
    Re: Production question?

    I'm new too.... I don't look at the kwM2/day. I look at the KWH per month. I plugged in your figures for Boston & it shows the 5th month (May) as producing 464 kilo watt hours. So, for per pay divide that by 31 days in May & you get 14.97 kilo watt hours per day.
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  • RCinFLA
    RCinFLA Solar Expert Posts: 1,485 ✭✭✭✭
    #3
    Re: Production question?

    http://rredc.nrel.gov/solar/pubs/redbook/

    Gives the average full sun equivalent per day for various tilt angle at different times of year.
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