[Kellis91789]

Yeah, there is conflicting info. Not sure who to believe.

[He says there’s a misconception about a lack of sunlight in the Great Lakes State. “Germany has led the world in solar installations for the last two or three years, and they get fewer hours of ‘insolation’, or viable sunlight than we do in Michigan,” said D’Alecy. “Michigan gets 80 percent of the solar radiation that Jacksonville, Florida receives.]

From:

http://www.michigan.org/mbr/enewsletter/combo.asp?ContentId=6890C2E7-CBB5-464E-84E9-8CA50F56BF32

[Robert A Cook PE]

Germany’s installations are EU-driven and government-subsidized. There is no free market, nor true analysis involved.

Rainfall and snowfall, clouds, etc + latitude of course - also drive insolation values.