US lawIllinoisRegulationsTitle 83 — PUBLIC UTILITIESCHAPTER I: ILLINOIS COMMERCE COMMISSIONSUBCHAPTER d: GAS UTILITIESPart 550 — NON-DISCRIMINATION IN AFFILIATE TRANSACTIONS FOR GAS UTILITIES550.16083 Ill. Adm. Code 550.160Complaint ProceduresYear: 2026Length: 22 wordsOfficial source Section 550 Section 550.160 Complaint Procedures Complaints alleging violations of this Part shall be filed pursuant to 83 Ill. Adm. Code 200.Previous83 Ill. Adm. Code 550.140