A roof mounted PV system has a mitigating effect on the cooling needs of the building. The PV maybe less efficient, but it needs to do less work. I have no idea how that really balances out.
On Sun, May 25, 2014 at 1:52 PM, Lawrence Rhodes via EV <ev@lists.evdl.org>wrote: > > > > 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. > > > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140525/f39527ca/attachment.htm > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do With your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk michael.e.r...@gmail.com <michael.e.r...@gmail.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140525/8aac70bc/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
