I have run a parametric analysis for two SAM models and generated somewhat surprising result for the maximum annual energy generation off of the PV system.
I expected the maximum annual generation to be generated from a PV system facing north (in the southern hemisphere), and at a tilt of roughly my latitude.
Instead, the optimal azimuth seems to be nearly 30 degrees off of north, towards the NE, while the optimal tilt is approximately my latitude. This seems to be rather far off. Have you seen this before Paul?