Solar Panel Gate

I need to know A.S.A.P because this is for my Science Fair project.

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One Response to “How many kilowatt hours does a 180 watt solar panel produce in one month?”

1. billrussell42 says:

   July 10, 2010 at 8:37 am

   If you are getting 8 hours of sunlight a day, but not all of them direct sun, then the average power output is perhaps 90 watts or lower.

   that’s 90*8 = 270 watt-hours. For 30 days that is 8100 watt-hrs or 8.1 kw-hrs.

   I think the actual numbers will be a lot lower. There are cloudy or rainy days with no sun, and the output of the panel will be very low at sunset and sunrise.

   Any time a tree branch blocks part of the array, you get zero out, the entire panel has to have sun shining on it.

   Probably 4 kw-hrs is the best you can get in a real life situation, with a good location.