One for solar geeks

[Sea Change]

I think it was here that I discovered that, having a flat roof, the optimum angle was 20⁰ because a greater angle would produce shading to the next row; and that would outweigh the better efficiency. Even then, at our English latitude, we get mainly naff all Dec-Jan.

It's a great tool.
I'm about to install solar at home, and I've been fine tuning the angle. Maximum annual production for me is at 39⁰, but for a holiday house occupied in the summer, I'm better off at a much steeper angle which 'wastes' potential mid summer production in order to boost shoulder season performance.
Maybe I'm just a big geek who needs to get out more, but I find this quite fascinating...

 

[lustyd]

I think it was here that I discovered that, having a flat roof, the optimum angle was 20⁰ because a greater angle would produce shading to the next row;

it’s still early days as a topic to be fair. With bifacials vertical panels oriented north-south produce more as they get morning and afternoon peaks rather than lunchtime which went against everything everyone had thought before. Our flexis have lenses on top to reduce the effect of mounting angle.