What did Ameren Illinois file with the Illinois Commerce Commission?

Ameren filed direct testimony on April 23, 2026 to reconcile its Purchased Gas Adjustment costs for 2025.

Will my gas bill definitely change because of this filing?

Not necessarily; the filing may result in rate changes, but the ICC must review and approve any adjustments.

Which areas are affected by the proposed changes?

All three Ameren rate zones are included: former AmerenCIPS, AmerenCILCO, and AmerenIP territories.

Public Notice — Springfield

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Affects:General PublicProperty Buyers

Ameren Illinois filed testimony with the Illinois Commerce Commission on April 23, 2026 seeking reconciliation of its Purchased Gas Adjustment (PGA) costs for calendar year 2025. The filing may lead to changes in gas delivery rates across its three rate zones.

Key Takeaways

Filing date: April 23, 2026
Reconciles PGA costs for Jan 1–Dec 31, 2025
May change delivery rates in all three rate zones
Applies to former AmerenCIPS, CILCO, and IP territories

Published: May 13, 2026 · 1 week ago
Category: Other
City: Springfield

Research context

2 other notices in Springfield (last 12 months)

What to do next

1

Monitor ICC docket

Check the Illinois Commerce Commission docket for this Ameren PGA reconciliation after April 23, 2026 for filings and decisions.

2

Review your bill after ICC order

If rates change, compare bills before and after the ICC order to see any delivery charge adjustments.

Frequently asked questions

What did Ameren Illinois file with the Illinois Commerce Commission?: Ameren filed direct testimony on April 23, 2026 to reconcile its Purchased Gas Adjustment costs for 2025.
Will my gas bill definitely change because of this filing?: Not necessarily; the filing may result in rate changes, but the ICC must review and approve any adjustments.
Which areas are affected by the proposed changes?: All three Ameren rate zones are included: former AmerenCIPS, AmerenCILCO, and AmerenIP territories.

The suggestions and answers above are AI-generated for general information only. They can be wrong, and we don't take responsibility for their accuracy. Talk to a qualified professional before acting on them.

Legal terms in this notice

Purchased Gas Adjustment (PGA) Rider: A tariff mechanism to recover the utility's cost of buying gas from suppliers, passed to customers.
Reconciliation: Review comparing recovered gas costs to actual costs to determine over- or under-recovery.
Rate Zone: Geographic area with its own set of rates and charges within the utility's service territory.
Direct testimony: Evidence filed by a witness explaining facts and support for the utility's requested changes.

Full Notice Text

Public Notice Public NoticePUBLIC NOTICENotice of Proposed Tariff ChangesGas Service Schedule Ill. C. C. No. 2To the Gas Patrons ofAmeren Illinois Company d/b/a Ameren Illinois:Ameren Illinois (or Company) hereby gives notice to the public that onApril 23, 2026, it filed with the Illinois Commerce Commission (ICC orCommission) evidence (direct testimony) regarding the reconciliation ofrevenues and costs under the Company's Purchased Gas Adjustment(PGA) Rider with costs incurred in connection with the cost of gas fromJanuary 1, 2025 through December 31, 2025. The evidence is appli-cable to Rate Zone I (formerly the AmerenCIPS service territory), RateZone II (formerly the AmerenCILCO service territory) and Rate Zone III(formerly the AmerenIP service territory); and may result in changes inits rates and charges with respect to gas delivery services throughoutthe Company's gas service territory

Related Notices

Notice

DateCategoryCity

Ameren Illinois filed testimony with the Illinois Commerce Commission on April 23, 2026 to reconcile 2025 purchased gas costs and revenues under its PGA Rider for all three rate zones; this may lead to changes in gas delivery rates and charges.

May 13, 2026OtherSpringfield