Is there a limit in the number of orientations defined in the 3D model? The Orientations tab allows up to 8, but the shadings part only recognises two orientations. Refer to the system overview extract below. Orientation parameters Field type: Several orientations 5 orientations: tilt/azim = 30°/-1°, 30°/-39°, 30°/75°, 30°/-15°, 30°/-105°, <- These were defined manually in the Orientations Tab Shading scene parameters <- These are the individual fields in the 3D shading scene 10 fields defined Total Area 948.0 m² Field #1: polygonal Polygonal field Total area = 138.0 m² Orientation #-2 Tilt/Azimut = 30.0° / 28.0° < Notice 28 degree Azimut, Orientation #2 Not matching any definition in the "Orientation" part ! Field #2: polygonal Polygonal field Total area = 138.0 m² Orientation #-1 Tilt/Azimut = 30.0° / 28.0° < Notice 28 degree Azimut, Orientation #1 Not matching any definition in the "Orientation" part ! Field #3: polygonal Polygonal field Total area = 138.0 m² Orientation #-1 Tilt/Azimut = 30.0° / 75.0° < Notice 75 degree Azimut, Orientation #1 Not matching any definition in the "Orientation" part ! Field #4: polygonal Polygonal field Total area = 138.0 m² Orientation #-1 Tilt/Azimut = 30.0° / 75.0° Not matching any definition in the "Orientation" part ! Field #5: polygonal Polygonal field Total area = 138.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -105.0° < Notice -105 degree Azimut, Orientation #1 Not matching any definition in the "Orientation" part ! Field #6: polygonal Polygonal field Total area = 138.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -105.0° Not matching any definition in the "Orientation" part ! Field #7: polygonal Polygonal field Total area = 30.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -15.0° Not matching any definition in the "Orientation" part ! Field #8: polygonal Polygonal field Total area = 30.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -15.0° Not matching any definition in the "Orientation" part ! Field #9: polygonal Polygonal field Total area = 30.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -63.0° Not matching any definition in the "Orientation" part ! Field #10: polygonal Polygonal field Total area = 30.0 m² Orientation #-1 Tilt/Azimut = 30.0° / -63.0° Not matching any definition in the "Orientation" part ! Orientation #-1 9 tables, Area = 0.00 m² New simulation variant List of other shading objects Obstacle #-10 Building object Obstacle #-10 Building object Obstacle #-10 Building 11 & 12 Obstacle #-10 Building object Obstacle #-10 Building object Obstacle #-10 Building object Obstacle #-10 Building object Use in simulation: Acc. to strings (Electrical loss fraction 100%) My project settings has been set as follows: Discriminating orient. difference between shading planes: Default, 1.0 deg. Max orient. difference for defining average (spread) orientation: 90 deg. Maximum Field/Shadings Area Ratio: Default, 2.5. Thank you for your help!