DIY everything to keep costs down.
63 x Bluesun 700W Bifacials in 21 sets each having 2,1/1,5kWp, total 44,1/31,5kWp front/back. The whole idea was to avoid shadows on either side with vertical installation to maximize winter production and keep snow off. This was my first take on solar and has only been working for 5 months now, so hard to tell how good or bad it is. We have over 19 hours of sun around mid summer, so plenty of production even with fixed tilt.
Used CCA treated old electric poles hammered (not dug) 2m deep with excavator and insulated to withstand ground frost, no concrete. Frames are made from 40x40x3mm marine grade aluminium and welded together (there are water drainage holes). Each frame has three panels glued to it (and to each others) and weights 150kg. Glue is UV protected heavy equipment windshield glue with primer. This way each frame is very rigid even being 4m x 2,8m in size. Ground clearance is 1m. Tilt is not totally vertical, but ~80 degree which is optimal for winter here and maybe slightly better with summer production.
My main concern is pole movement and high winds. So far it has survived 29m/s (65MPH) wind. Keeping fingers crossed...
Frontside
View attachment 167218
Backside
View attachment 167219
Set of three panels. Black windshield glue is visible.
Homemade SS fasteners to allow pole movement. Mudflap rubber to reduce movement and sound.