When you setup your sheds, say 20 at 25 degrees with a 7.3M spacing, 3 modules in landscape so 3M coil band width, with 9 diodes (3 per module), 156mm cells in the south of the UK, you would expect a figure of around 3%, which you get, when you run the simulation it comes up a7% and when you go back the shading graph is now shows 7%, which is not correct. If you load the project again the shade figure goes back to 3-4%, but then goes up again. I assume this is an error in the software? The actual result is about right, but the radiation onto the collector gain from horizontal to 25 degrees is 21%, which is too high. I wonder if these figures are connected.
