Where to mount solar panels on roof?
Where would you guys mount 2 100 watt solar panels on this trailer? Plan on mounting another 2 100 watters in the future.
Forum Discussion
You have to be specific about leaving them flat and just adding an extra flat panel to be equivalent to tilting them.
Actual numbers: 130w panel daily AH haul 49.3N, mid May:
Flat 56, Tilted 70, Tilted and tracking 90
So we see that adding a second 130w both flat would be 112AH, more than the single tracker at 90, BUT
What about two 100s tilted but now you lay them flat and add a third 100 flat? Be the same as the 130w tilted but now flat and add a flat 65w in proportion, so:
130w tilted- 70
130 + 65 flat- 56 + 28 = 84
So that works too, but you see that the "extra panel" must be enough addition to the original set to make that break even or better. EG
Say we started with two 130s tilted - 140AH
and now laid them flat and added a flat 65, we get:
112 + 28 = 140 so breaks even. So anything less than adding 1/4 of the original tilted will not break even (at 49.3N in mid May)
So you could take your two tilted 100s and lay them flat, add a flat 50 and break even
Actual numbers: 130w panel daily AH haul 49.3N, mid May:
Flat 56, Tilted 70, Tilted and tracking 90
So we see that adding a second 130w both flat would be 112AH, more than the single tracker at 90, BUT
What about two 100s tilted but now you lay them flat and add a third 100 flat? Be the same as the 130w tilted but now flat and add a flat 65w in proportion, so:
130w tilted- 70
130 + 65 flat- 56 + 28 = 84
So that works too, but you see that the "extra panel" must be enough addition to the original set to make that break even or better. EG
Say we started with two 130s tilted - 140AH
and now laid them flat and added a flat 65, we get:
112 + 28 = 140 so breaks even. So anything less than adding 1/4 of the original tilted will not break even (at 49.3N in mid May)
So you could take your two tilted 100s and lay them flat, add a flat 50 and break even
