October 31, 20214 yr Staying in GP. My roof is at 10 deg from horisontal but very close to north facing. Now comes my question: should I rather spend money on tilting panel mounts for a better angle or spend that money on a couple of extra panels and stay at 10 deg? Hope someone has done some calculations. Thank you
October 31, 20214 yr Free online calculator here from NREL. My vote goes to Angle but you can calculate it easy….
November 1, 20214 yr Author Thank you very much. I'll play around a bit. Sofar it looks like the average loss is about 10% around the year. Hmm
November 1, 20214 yr Not sure of your location but if you live in very windy area, rather leave the panels mounted flush to the roof and add extra for better protection. It might be more complicated and costly to windproof the mountings with tilted angle, than to add couple of extra panels. Edited November 1, 20214 yr by PowerUser
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