Rad material doesn't change energy result

I am trying to set the colour to EPmaterial bud didn’t know how?
when I use rad material energy result doesn’t change.

Rad materials only affect Radiance simulations. Not energy simulations. And EP materials don’t have colors since a red material with the same reflectance as a blue material shouldn’t have any impact on energy use. But EP materials have visible and solar absorptance properties.

thanks, I will use solar absorptance properties.