83 Ill. Adm. Code 712.290

Billing and Collection Study

Year: 2026Length: 65 wordsOfficial source
Section 712 Section 712.290  Billing and Collection Study 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.