Ameren Illinois (AILIH) issues 2036 bonds to repay CP
Ameren Illinois Company plans to issue a new series of first mortgage bonds due 2036 under its existing mortgage indenture. The bonds will pay semiannual interest and be issued in minimum $2,000 denominations, in book-entry form through DTC, Clearstream and Euroclear.
The bonds will be secured by a first lien on substantially all Ameren Illinois properties, ranking equally with its other first mortgage bonds, effectively senior to unsecured debt and senior to any subordinated obligations. Ameren Illinois may redeem the bonds before maturity at a make-whole premium based on a Treasury Rate, and at par on or after a defined par call date. If a Tax Credit Event occurs related to holdings by specified foreign entities, Ameren Illinois may redeem all bonds at 101% of principal plus accrued interest.
Net proceeds are expected to be used to repay short-term commercial paper borrowings. As of June 30, 2026, total capitalization was $14.7 billion, including $6.3 billion of long-term secured debt and $428 million of short-term debt. The bonds will not be listed on any securities exchange and no trading market currently exists.
Positive
- None.
Negative
- None.
Key Figures
Key Terms
Tax Credit Event financial
specified foreign entities regulatory
Treasury Rate financial
portfolio interest exemption regulatory
FATCA regulatory
Offering Details
FAQ
What securities is AILIH offering in this 424B3 prospectus supplement?
How will Ameren Illinois (AILIH) use the proceeds from the new bonds?
How are the new AILIH bonds secured and where do they rank in the capital structure?
What are the key redemption features of the Ameren Illinois 2036 bonds (AILIH)?
What is a Tax Credit Event in the context of the AILIH bond offering?
What is Ameren Illinois’s capitalization profile around this AILIH bond issue?
Will the Ameren Illinois (AILIH) bonds have an active trading market or exchange listing?
AI-generated analysis. How Rhea-AI works. Not financial advice.
(To Prospectus dated August 4, 2026)
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Offering
Price(1) |
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Underwriting
Discount |
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Proceeds, Before
Expenses, to Ameren Illinois |
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Per bond
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Total
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Academy Securities
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Commerce Brokerage Services, Inc.
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Page
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Prospectus Supplement
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About this Prospectus Supplement
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Ameren Illinois Company
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Risk Factors
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Where You Can Find More Information
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Capitalization
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Use of Proceeds
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Description of Bonds
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Certain United States Federal Income Tax Consequences
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Underwriting
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Legal Matters
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About this Prospectus
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Ameren Illinois Company
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Risk Factors
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Where You Can Find More Information
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Use of Proceeds
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Description of Senior Secured Debt Securities
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Description of First Mortgage Bonds and Mortgage Indenture
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Description of Senior Unsecured Debt Securities
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Description of Preferred Stock
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Book-Entry System
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Selling Securityholders
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Plan of Distribution
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Legal Matters
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Experts
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c/o Ameren Corporation
Attention: Office of the Secretary
P.O. Box 66149, Mail Code 1310
St. Louis, Missouri 63166-6149
Telephone: (314) 621-3222
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As of June 30, 2026
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Amount
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Percent of
Total Capitalization |
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(in millions)
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Short-term debt(1)
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| | | $ | 428 | | | | | | 2.9% | | |
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Long-term secured debt (including current maturities)(2)(3)
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| | | | 6,313 | | | | | | 42.9 | | |
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Total short-term debt and long-term secured debt (including current maturities)
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| | | | 6,741 | | | | | | 45.8 | | |
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Preferred stock
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| | | | 49 | | | | | | 0.3 | | |
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Other shareholders’ equity
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| | | | 7,932 | | | | | | 53.9 | | |
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Total capitalization
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| | | $ | 14,722 | | | | | | 100.0% | | |
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Underwriter
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Principal
Amount |
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Goldman Sachs & Co. LLC
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KeyBanc Capital Markets Inc.
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SMBC Nikko Securities America, Inc.
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TD Securities (USA) LLC
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Academy Securities, Inc.
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Commerce Brokerage Services, Inc.
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Total
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Paid by us
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Per bond
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First Mortgage Bonds
Senior Unsecured Debt Securities
Preferred Stock
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Page
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About this Prospectus
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| | | | 1 | | |
|
Ameren Illinois Company
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| | | | 1 | | |
|
Risk Factors
|
| | | | 2 | | |
|
Where You Can Find More Information
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| | | | 3 | | |
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Use of Proceeds
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| | | | 4 | | |
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Description of Senior Secured Debt Securities
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| | | | 5 | | |
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Description of First Mortgage Bonds and Mortgage Indenture
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| | | | 17 | | |
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Description of Senior Unsecured Debt Securities
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| | | | 32 | | |
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Description of Preferred Stock
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| | | | 39 | | |
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Book-Entry System
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| | | | 43 | | |
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Selling Securityholders
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| | | | 45 | | |
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Plan of Distribution
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| | | | 46 | | |
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Legal Matters
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| | | | 47 | | |
|
Experts
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| | | | 47 | | |
c/o Ameren Corporation
Attention: Office of the Secretary
P.O. Box 66149, Mail Code 1310
St. Louis, Missouri 63166-6149
Telephone: (314) 621-3222