@SaeranVasanthakumar and @Martin6 ,
I think you will both be happy to know that I made a tweak to the “HB Color Rooms” component to split the solar data of enclosures into individual Honeybee Rooms before we color the geometry:
The only requirement that you need to follow in order to see solar results for rooms with air boundaries is that you must connect the whole model to the _rooms_model input and you can’t just connect a list of individual rooms.
The best criteria that could think of in order to split the total solar energy between the rooms was the area of exterior apertures on each room. Using exterior aperture area should be a little less misleading than evenly subdividing the solar across all rooms in the enclosure or using the floor area to do so.
And, most importantly, it gets around the unexpectedness that you experienced here and while remaining faithful to the total solar energy that EnergyPlus reports over each enclosure.