How do I show light in Revit?

Why are my lights not on Revit?

If your Artificial Lights are turned on but little to no light is coming out of the fixture, check to see if your lighting fixture family has geometry, such as a diffuser, that is blocking the light source definition.

Why are my Revit renderings dark?

If the rendered image is all black, it could be caused by the following: No lights: The render settings do not include natural or artificial light. For example, suppose you specify an interior lighting scheme that uses artificial lights only, but all interior lights are turned off.