Illinois utility rate cases

CRGA is a broad clean energy and affordability law, not a data center bill, and it is the main reason state officials point to when asked what Illinois has done so far to control electricity costs statewide.

Capacity costs baked into the summer supply price are the main channel through which data center growth is already raising Ameren Illinois electric bills.

CRGA is a broad clean energy and affordability law, not a data center bill, and it is the main reason state officials point to when asked what Illinois has done so far to control electricity costs statewide.

This case does not change what a household pays today, but it is the main tool Illinois regulators are using to try to stop the cost of new grid equipment for data centers from landing on residential bills.

This is a routine annual true up of ComEd's delivery charges, not something tied to data centers, and it adds a few dollars a month to a typical bill.

This is a routine annual true up of Ameren's delivery charges, not tied to data centers, and regulators said it should not noticeably move a typical bill.

This is a gas delivery rate case, separate from electric bills, and it is not linked to data center growth.

This is the single biggest reason ComEd bills jumped in summer 2025 and again in 2026, and PJM and consumer groups both tie it directly to data center demand growth.

This is the base multi-year plan that sets the delivery portion of a ComEd household bill through 2027, separate from the newer data center specific tariff cases.