---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-120035"
form_type: "8-K"
ticker: "AEE"
cik: "0001002910"
company_name: "AMEREN CORP"
filed_at: "2023-11-21T23:59:59+00:00"
generated_at: "2026-06-07T22:27:36.092497+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ICC approves $112M annual base rate increase for Ameren Illinois natural gas delivery

## Summary
- $112M annual base rate increase approved by ICC; includes $77M that would have been recovered under riders in 2024.
- Allowed ROE of 9.44%, 50% common equity ratio, and rate base of $2.85 billion.
- Order reduced ~$93M of distribution and transmission capital investments from the requested amount.
- Impact on 2023 results expected immaterial; new rates effective late November 2023.
- Ameren Illinois evaluating whether to seek rehearing or appeal; intervenor parties may also act.

## SEC filing metadata
- accession: 0001104659-23-120035
- form_type: 8-K
- ticker: AEE
- cik: 0001002910
- company_name: AMEREN CORP
- filed_at: 2023-11-21T23:59:59+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1002910/000110465923120035/0001104659-23-120035-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/18654/000110465923120035/tm2331124d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-120035
- JSON: https://secwatch.observer/filing/0001104659-23-120035.json
- Plain text: https://secwatch.observer/filing/0001104659-23-120035.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.