Ill. Admin. Code tit. 83 § 712.290
Current through Register Vol. 48, No. 52, December 27, 2024
A study, completed at least annually, is required to apportion customer billing and collection costs to regulated and nonregulated activities. This study is used to apportion selected cost pools in Account 6620 Services. This study shall distinguish the nonregulated proportion of the key determinants of customer billing and collection: messages or billing units and lines of billing.
Ill. Admin. Code tit. 83, § 712.290