Here's a starting point. It comes from California (reprinted fby "Canada" so needs some adaptation to Western Canadian needs. A chapter on more northern latitudes would be appropriate as snow loads; near Arctic conditions; blizzards and frost and more varying sunlight incident angles aren't in their vocabulary. And since I know of only one clay tile roof in the area; not many can just rip them off and install lighter "composite" shingles underneath to reduce the roof load. And I'd still worry a whole lot about how and especially who is going to maintain those "clean" delicate surfaces through the winter months. As the article alludes to; you need a standoff space to keep those panels from getting too warm; a factor the salesman omitted when he spread his propaganda about spraying on PV panels directly to the "shingles".
What a potential nightmare in the real world!!!
http://www.energy.ca.gov/reports/2001-09-04_500-01-
020.PDF[URL="http://www.energy.ca.gov/reports/2001-09-04_500-01-020.PDF"]http://www.energy.ca.gov/reports/2001-09-04_500-01-020.PDF[/URL]
What a potential nightmare in the real world!!!
http://www.energy.ca.gov/reports/2001-09-04_500-01-
020.PDF[URL="http://www.energy.ca.gov/reports/2001-09-04_500-01-020.PDF"]http://www.energy.ca.gov/reports/2001-09-04_500-01-020.PDF[/URL]
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