Todd, I've seen that photo of yours before. Yeah, that is really something!!!
A few questions.... Have you seen it happen on systems or sites other than the one in the photo? What brand of modules? Were they covered under warranty? If not, Why not? So was this a result of some snow accumulation, then melt/freeze cycles then more snow accumulation which forced the ice build-up down onto the lower frame edge? Are you aware/can you clarify what led up to this? I am aware of massive amounts of snow fall in mountain regions (not exclusively). Is that where this was? Was there a particular "massive snow fall event" prior to this happening? Thanks, *Benn Kilburn * CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc 6706 – 82 Ave NW | Edmonton, AB | T6B 0E7 P: 780-474-8992 | F: 888-405-5843 | www.skyfireenergy.com [image: email] <b...@skyfireenergy.com> [image: facebook] <https://www.facebook.com/SkyFireEnergy> [image: twitter] <https://twitter.com/SkyFireEnergy> [image: linkedin] <https://www.linkedin.com/company/283735?trk=tyah&trkInfo=tarId%3A1408655033432%2Ctas%3Askyfire%2Cidx%3A2-2-5> [image: google] <https://plus.google.com/+SkyFireEnergy/> [image: SkyFire Energy Logo_horizontal] On Wed, Dec 9, 2015 at 2:56 PM, <toddc...@finestplanet.com> wrote: > except, "let it melt" on shallow angle roof mounts often yields this: > > > > > > todd > > > > > > > > > > > > On Wednesday, December 9, 2015 1:48pm, "Benn Kilburn" < > b...@skyfireenergy.com> said: > > Dana, > SESA (Solar Energy Society of Alberta) has been providing a great service > to anyone interested in Solar Energy for many years. One project touches > on what a PV system will produce at various angles here in Edmonton and the > result of snow removal, or not, in particular. > > I've been meaning to reply to this with a link... here it is... > http://solaralberta.ca/content/alberta-solar-performance-data > > Now, assuming we are talking grid connected systems rather than off-grid > when the energy is 'really' needed. > The rational that this reference array system supports is that during > the 'snow months' while the days (and sun hours) are short and there is > little potential energy to harvest anyway, there is not a huge, if any, > benefit to pay anyone or risk safety to bother clearing snow off of modules > in the winter. > > Of course your site will have its own variables, but if you make some > estimations on days of snow cover and peak sun-hours you are missing out on > then you can calculate the potential loss in kwh and dollar value that you > are loosing due to snow cover. > If someone's time is being paid to remove the snow then it is most likely > not worth the cost considering the $ value of the potential kwh lost. > > Our general consensus is that if removing the snow presents any challenge, > especially to safety, then it is best to just leave it to melt. > > Not really an answer to your question... but another perspective to > consider. > > > > *Benn Kilburn * > CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc > 6706 – 82 Ave NW | Edmonton, AB | T6B 0E7 > P: 780-474-8992 | F: 888-405-5843 | www.skyfireenergy.com > [image: email] <b...@skyfireenergy.com> [image: facebook] > <https://www.facebook.com/SkyFireEnergy> [image: twitter] > <https://twitter.com/SkyFireEnergy> [image: linkedin] > <https://www.linkedin.com/company/283735?trk=tyah&trkInfo=tarId%3A1408655033432%2Ctas%3Askyfire%2Cidx%3A2-2-5> > [image: google] <https://plus.google.com/+SkyFireEnergy/> > > [image: SkyFire Energy Logo_horizontal] > > On Thu, Dec 3, 2015 at 3:05 PM, Dana <d...@solarwork.com> wrote: > >> For a flat roof, 35° rack mounted large array in snow country what have >> people done for snow removal other than hand shovel it out? >> >> We thought of a dark roof material to start, & we can’t snow blow as >> there will be sidewalks & people below on all 4 sides. >> >> We are trying think this out in advance! >> >> >> >> >> ---------------------------------------------------------------------------- >> >> Dana Orzel >> >> Great Solar Works, Inc - NABCEP # 051112-136 >> >> E - d...@solarwork.com - Web - solarwork.com >> >> O - 970.626.5253 C - 208.721.7003 >> >> "Responsible Technologies for Responsible People since 1988" >> >> *P* Please consider the environment before printing this email. >> >> >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > > > Sent from Finest Planet WebMail. > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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