If modeling a new solar panel system with PVLib, is it necessary to factor in cloud cover and rain if I have tmy (typical meteorological year) data?
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I assume that you're data include global horizontal irradiance (GHI), and/or diffuse and direct irradiance? If so, then the cloud cover is already accounted for, and you should just use these irradiance values as they are. I suppose the only reason you would use rain would be if you plan to model some kind of soiling? – Adam R. Jensen Nov 12 '21 at 09:20
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Yes it does. DNI, GHI, DNI are all in the tmy. Thank you. – DanGoodrick Nov 12 '21 at 14:38
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Per Adam's comment, cloud cover is included in the tmy data with the DNI, GHI and DNI parameters.
DanGoodrick
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