65 ILCS 5/11-15.5-25: Applicability.

(a) As used in this Section, "shared roof" means any roof that (i) serves more than one unit, including, but not limited to, a contiguous roof serving adjacent units, or (ii) is part of the common elements or common area of a unit.

(b) This Division shall not apply to any building that:

(1) is greater than 60 feet in height; or

(2) has a shared roof.

(c) Notwithstanding subsection (b) of this Section, this Division shall apply to any building with a shared roof:

(1) where the solar energy system is located entirely within that portion of the shared roof owned and maintained by the property owner;

(2) where all property owners sharing the shared roof are in agreement to install a solar energy system; or

(3) to the extent this Division applies to low-voltage solar-powered devices.