Hi,
your roof material is set to color 0,0,0, which is the deepest black. Even the most intensive light can't change black to anything else.
The changes I made to get it more light:
Set the camera view as current
Changed the "Black Targa" material to a grey color instead of deep black
Turned on Sky Background and Illumination.


That's what I get after playing with the time (for the sun position):

Is that the direction what you are looking for?
- alfred -
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Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ...
blog.ish-solutions.at ...
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CDay 2026------------------------------------------------------------------------------------
(not an Autodesk consultant)