Studies have shown having PV in cool climates is a bit more efficient than hot
climates as the cool air improves how the PV works and extends working life.
Lawrence Rhodes
>
>
>The last studies I saw (which I can try to dig up) showed PV energy payback at
>between 1 and 4 years -- so with a 25+ year lifespan, they should easily pay
>back, even in a climate like Seattle or Germany.
>
>
>Now, if you put it on a highway, which they seem to tear up and resurface
>every 3 or 4 years around here to add lanes or just have fun with orange
>cones, it doesn't make as much sense. I really question the sense of putting
>solar where semi trucks and snowplows and studded tires and chains have a
>chance to tear it up... even concrete wears down pretty bad after 10+ years of
>that. Much better in my mind to put it above the highway as a canopy.
>
>
>
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