Illinois Commercial Energy

Rates and Markets Guides

Reviewed resources in this topic. Dates and official sources are shown within time-sensitive guides.

Illinois Business Electricity Rates: ComEd vs Ameren

A source-linked guide to comparing utility supply and retail electricity offers for Illinois businesses in ComEd and Ameren Illinois territories.

Updated 2026-07-19

PJM Capacity Prices and ComEd Business Bills

How PJM capacity auctions, Peak Load Contribution, supplier contract treatment, and delivery years can affect ComEd-area commercial electricity costs.

Updated 2026-07-19