AUTHORITY: Implementing Section 8-505 and authorized by Section 10-101 of the Public Utilities Act [220 ILCS 5/8-505 and 10-101].
SOURCE: Effective June 1, 1963; rules repealed at 8 Ill. Reg. 19750, effective October 1, 1984; new Part adopted at 8 Ill. Reg. 19943, effective October 1, 1984; amended at 9 Ill. Reg. 11803, effective July 25, 1985; amended at 16 Ill. Reg. 6180, effective April 15, 1992; amended at 17 Ill. Reg. 22043, effective February 15, 1994; amended at 27 Ill. Reg. 5720, effective June 15, 2003; amended at 45 Ill. Reg. 3148, effective February 10, 2022.