Ill. Admin. Code tit. 86, § 470.131
a) The pass-on of municipal and State utility taxes added to a business' utility bills as additional charges shall be exempt for a business enterprise located within an area designated by a county or municipality as an enterprise zone pursuant to the Illinois Enterprise Zone Act [20 ILCS 655]. The business enterprise must meet the following criteria [20 ILCS 5/9-222.1]:
3) is certified by the Department of Commerce and Economic Opportunity as complying with the requirements specified in subsections (a)(1) and (2). [220 ILCS 5/9-222.1(3)
(Source: Amended at 43 Ill. Reg. 7463, effective June 18, 2019)