solar panel max energy output per year

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  • hamsuplo
    Junior Member
    • Apr 2012
    • 9
    #16
    Originally posted by russ
    Average sunlight hours in this manner is just the average insolation in watts divided by 1000 or an annual average insolation of 5.07 kW/m2/day would mean 5.07 sunlight hours.

    A term some consider useful and I consider to just be confusing.
    ya thanks, that was what was confusing me so much. but why is it divided by 1000? where did that come?

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      • Naptown
        Solar Fanatic
        • Feb 2011
        • 6880
        #17
        divided by 1000 to convert watts to kilowatts
        NABCEP certified Technical Sales Professional

        [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

        [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

        [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

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          • Sunking
            Solar Fanatic
            • Feb 2010
            • 23301
            #18
            kWh/m^2/day = Sun Hours. They are both the same thing. So if in winter the insolation table says you have 2.3 kWh/m^2/day converts to 2.3 Sun Hours. So now if you have a 1000 watt system @ 77% efficiency the system will generator 1000 watts x 2.3 hours x .77 = 1771 watt hours or 1.771 Kwh. It is a very straight forward formula where Watt Hours = Watts x Hours.
            MSEE, PE

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