The following table presents the principal credit ratings of the Ameren companies by Moody's and S&P effective as of Nov. 30, 2024
| Ameren Corporation |
| Issuer/Corp. Credit Rating |
Baa1 |
stable |
|
BBB+ |
stable |
| Senior Unsecured |
Baa1 |
stable |
|
BBB |
stable |
| Commercial Paper |
P-2 |
stable |
|
A-2 |
stable |
| Ameren Missouri: |
| FMB/Senior Secured |
A2 |
stable |
|
A |
stable |
| Issuer/Corp. Credit Rating |
Baa1 |
stable |
|
BBB+ |
stable |
| Senior Unsecured |
Baa1 |
stable |
|
Not Rated |
|
| Preferred Stock |
Baa3 |
stable |
|
BBB- |
stable |
| Commercial Paper |
P-2 |
stable |
|
A-2 |
stable |
| Ameren Illinois Company: |
|
|
|
|
|
| FMB/Senior Secured |
A1 |
stable |
|
A |
stable |
| Issuer/Corp. Credit Rating |
A3 |
stable |
|
BBB+ |
stable |
| Senior Unsecured |
A3 |
stable |
|
BBB+ |
stable |
| Preferred Stock |
Baa2 |
stable |
|
BBB- |
stable |
| Commercial Paper |
P-2 |
stable |
|
A-2 |
stable |
| Ameren Transmission Company of Illinois: |
| Senior Unsecured |
A2 |
stable |
|
Not Rated |
|
Issuer
Ameren Corporation
Issuer/Corp. Credit Rating
Moody's
Rating
Outlook
Baa1
stable
Standard & Poor's
Rating
Outlook
BBB+
stable
Senior Unsecured
Moody's
Rating
Outlook
Baa1
stable
Standard & Poor's
Rating
Outlook
BBB
stable
Commercial Paper
Moody's
Rating
Outlook
P-2
stable
Standard & Poor's
Rating
Outlook
A-2
stable
Ameren Missouri:
FMB/Senior Secured
Moody's
Rating
Outlook
A2
stable
Standard & Poor's
Rating
Outlook
A
stable
Issuer/Corp. Credit Rating
Moody's
Rating
Outlook
Baa1
stable
Standard & Poor's
Rating
Outlook
BBB+
stable
Senior Unsecured
Moody's
Rating
Outlook
Baa1
stable
Standard & Poor's
Rating
Outlook
BBB+
stable
Preferred Stock
Moody's
Rating
Outlook
Baa3
stable
Standard & Poor's
Rating
Outlook
BBB-
stable
Commercial Paper
Moody's
Rating
Outlook
P-2
stable
Standard & Poor's
Rating
Outlook
A-2
stable
Insured Tax Exempts - 92&89 A,B,C
Moody's
Rating
Outlook
A2
stable
Standard & Poor's
Rating
Outlook
A
stable
Ameren Illinois Company:
FMB/Senior Secured
Moody's
Rating
Outlook
A1
stable
Standard & Poor's
Rating
Outlook
A
stable
Issuer/Corp. Credit Rating
Moody's
Rating
Outlook
A3
stable
Standard & Poor's
Rating
Outlook
BBB+
stable
Senior Unsecured
Moody's
Rating
Outlook
A3
stable
Standard & Poor's
Rating
Outlook
BBB+
stable
Preferred Stock
Moody's
Rating
Outlook
Baa2
stable
Standard & Poor's
Rating
Outlook
BBB-
stable
Commercial Paper
Moody's
Rating
Outlook
P-2
stable
Standard & Poor's
Rating
Outlook
A-2
stable
Ameren Transmission Company of Illinois
Senior Unsecured
Moody's
Rating
Outlook
A2
stable
Standard & Poor's
Rating
Outlook
Not Rated
A credit rating is not a recommendation to buy, sell, or hold securities. It should be evaluated independently of any other rating. Ratings are subject to revision or withdrawal at any time by the rating organization.