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Operating utilities
| Operating utility | Regulator | Rate base | Authorized ROE | Authorized equity ratio | Open matters |
|---|---|---|---|---|---|
| Ameren Illinois IL · electric, gas | Not available | Not available | Not available | 0 |
Open rate cases
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Recent decisions
No linked decisions.
Across operating utilities
Regulatory economics
Requested and authorized revenue
Case values remain separate by utility and docket; they are not summed across test periods.
No revenue observations are linked.
ROE and rate-base history
Most recent ROE and rate-base observations by operating utility.
| Utility | Metric | Position | As of | Value |
|---|---|---|---|---|
| Ameren Illinois | Rate base | authorized | Jul 21, 2026 | Not available |
| Ameren Illinois | Return on equity | authorized | Jul 21, 2026 | Not available |
| Ameren Illinois | Rate base | authorized | Jul 21, 2026 | Not available |
| Ameren Illinois | Return on equity | authorized | Jul 21, 2026 | Not available |
Large-load tariffs
No published large-load tariff is linked to this parent portfolio.
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