I have found that after the first year the customer, after fighting w/ tilt up legs, that the array will usually end up in a single angle. It would seem to me w/ the # of proposed modules you look at a motorized tilt option. There are companies, that design & build this type of rack for commercial apps. they would be able to scale down something that would address your needs. Design it 10 different ways, build it once! > On Mar 30, 2022, at 1:54 AM, Jeff Clearwater via RE-wrenches > <[email protected]> wrote: > > Coming back to this Blake - seems to me you need a platform type rack that > has a tilt-up set of legs. > > The Nuance Osprey is such a rack - though I think they only go up to 35ยบ but > I think it could be easily adapted. They use Earth Anchors but can also be > mounted to sonotubes or even ground screws. > > It's beefy strong - no aluminum - just might work with heavy snow. > > https://nuanceenergy.com/solar-products/osprey-powerplatform > <https://nuanceenergy.com/solar-products/osprey-powerplatform> > > It's possible having two in portrait makes for too high a vertical but > perhaps using 60 cell modules instead of 72 might make it workable. > > Just a thought - hope it helps! > > Best, > > ~~~~~~~~~~~ > Jeff Clearwater > <image.jpg> > linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/> > www.villagepowerdesign.com <http://www.villagepowerdesign.com/> > cell - 413-559-9763 > ~~~~~~~~~~~~~~~~~~~~~~~ > > > > > > >> Blake Gleason via RE-wrenches <mailto:[email protected]> >> March 26, 2022 at 8:39 AM >> Hi all, >> >> I think there's a lot of experience on this list with PV in snowy regions. >> >> I'm wondering if anyone has ideas and/or specific hardware/racking systems >> to allow for easy "stowing" (in vertical or near-vertical position) or >> "seasonal removal" of the ground mount PV modules for the winter (snow) >> season? Or ideas for a completely different approach to solving the >> challenge I'm facing? >> >> I'm planning a new off-grid system in the Sierra (around 6000') for a small >> commercial community center facility. The facility is accessible and in use >> only during the summer months. So, I want to optimize production for the >> summer, and also avoid having the array destroyed by the heavy Sierra snow >> during the winter. >> >> To further paint the picture, here are some more details and constraints: >> >> - System size: 23kW (likely 48 Silfab 490 mods) >> - Must be ground mount (beautiful very tall trees completely surrounding all >> roof options) >> - Must be relatively low profile, visually. Pole mount not an option >> - Ideally one clean rectangular array 4x12 mods (13' x 90') or two 4x6 >> arrays (13' x 45') >> - Array tilt: 10-15 deg (summer use only, must be low-profile) >> >> There is a caretaker who has a seasonal crew, and could be trained to "stow" >> the array each season as long as that process is relatively straightforward. >> >> >> At one end of the spectrum, it could be as simple as disconnecting and >> un-installing all of the modules to store them in a stack underneath the >> nearby deck for the winter. I'd like to think there might be a more >> "elegant" solution (and less labor intensive, and less wear and tear on the >> modules over the years). I wondered if there's a clever way to "drop" the >> modules to a near-vertical orientation so they could remain in place during >> the winter (some kind of hinge at the top and release at the bottom). I >> guess this might require individual rows of modules instead of one large >> array. >> >> (As a bonus, I'd like to keep about four mods (out of the 48) operational >> through the winter for battery maintenance and a few incidental loads. >> These could be vertically mounted on the south side of one of the buildings, >> above the typical snow drift level, for example.) >> >> Thanks in advance for any suggestions, ideas, things you've tried that >> haven't worked, etc!! >> >> Best, >> Blake >> >> -- >> >> Blake Gleason, PE | Employee Owner >> Director of Innovation and Technical Excellence >> O: 510-845-2997 x128 >> C: 510-867-5878 >> >> 1035 Folger Ave. >> Berkeley, CA 94710 >> www.sunlightandpower.com <http://www.sunlightandpower.com/> >> License #326203 >> >> >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> <http://re-wrenches.org/> >> >> List Address: [email protected] >> <mailto:[email protected]> >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> <https://www.mail-archive.com/[email protected]/> >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> <http://www.re-wrenches.org/etiquette.htm> >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org <http://www.members.re-wrenches.org/> >> > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. 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> Tump > <blocked::mailto:[email protected]%22%20%5Co%20%22blocked::mailto:[email protected]>[email protected] > www.SWNL.net > <blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/> > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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