Originally Posted By: JBjorgen
Did you factor cloudy days into your equations? They can make a massive difference in the amount of solar energy you collect.
Yes.

There are perhaps 10 days a year in which there are clouds in the sky, and practically never is the sky completely overcast. Ajijic is high desert. The last drop of rain fell here on September 30, 2010. The rainy season is due to start in a week, but even then, like Camelot, it only rains at night. Really.

tanstaafl.
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