Andre, When you say "table-module", do you mean one one module? It seems to me that when we perform detailed calculation according to module layout, it performs the calculations as if there were 3 sub-modules. Is this correct? The reason I say this is that I am working with a shade scene now, where the difference between the according to strings method (100% elec effect), and detailed calculation according to layout method is around 2.3%, which is quite significant. This is if I partition the modules as the size of 1 string, 1 in height, 18 in length. The layout is 2 modules in landscape. If I model according to strings and set the number of partitions in height to 6 (modeling the submodules), my losses are very close to what results in the detailed calculation according to module layout. Using version 6.49. So is the according to module layout the most accurate method for calculating shading losses?