The Illinois Commerce Commission (ICC) has published a new electricity price index, identified under docket number P2026-0251. This publication is mandated by 83 Ill. Adm. Code 451 and pertains to Alternative Retail Electric Suppliers (ARES). The case was filed on March 19, 2026, and is currently in an initial administrative phase.

This notice serves to inform relevant parties, particularly ARES, about the availability of the published price index. While this is a procedural publication, ARES operating within Illinois should review the index to ensure compliance with any pricing regulations or reporting requirements associated with 83 Ill. Adm. Code 451. No specific compliance deadline is mentioned beyond the effective date of the regulation itself.