secwatch.observer — SEC 8-K summary
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Issuer:     AMEREN CORP (AEE)
CIK:        0001002910
Form:       8-K
Filed at:   2023-12-18T23:59:59+00:00
Accession:  0001104659-23-126540
Event type: regulatory
Sentiment:  negative
Materiality: 0.78
Item codes: 8.01
LLM model:  deepseek-v4-flash:cloud@v2

ICC rejects Ameren Illinois grid plan; approves $142M revenue increase vs $444M requested
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- ICC rejected Ameren Illinois' 5-year grid plan and adopted alternative rate-setting methodology through 2027.
- Approved cumulative revenue increase of $142M (corrected) vs $444M requested; ROE set at 8.72% with 50% equity.
- Rate base frozen at $3.872B (2022 year-end) until revised grid plan approved; 2023 rate base estimate $4.3B.
- Ameren Illinois may cut capex and opex; will seek rehearing and may appeal; reconciliation cap set at 105%.
- Electric rates effective Jan 1, 2024; existing riders and revenue decoupling remain in place.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1002910/000110465923126540/0001104659-23-126540-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/18654/000110465923126540/tm2333080d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-23-126540

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer