20 ILCS 3855/1-130

(a) The authorization to impose any new taxes or fees specifically related to the generation of electricity by, the capacity to generate electricity by, or the emissions into the atmosphere by electric generating facilities after the effective date of this Act is an exclusive power and function of the State. A home rule unit may not levy any new taxes or fees specifically related to the generation of electricity by, the capacity to generate electricity by, or the emissions into the atmosphere by electric generating facilities after the effective date of this Act. This Section is a denial and limitation on home rule powers and functions under subsection (g) of Section 6 of Article VII of the Illinois Constitution. (b) This Section is repealed on January 1, 2028.