Estimated Nuclear Generator Repairs

[Table of Co](#i2c056a9f8317485ea6601862f5b0559f_7)[ntents](#i2c056a9f8317485ea6601862f5b0559f_7)The following table sets forth, by level within the fair value hierarchy, the carrying amount and fair value of financial assets and liabilities disclosed, but not carried, at fair value as of December 31, 2021 and 2020:

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | CarryingAmount |  | Fair Value |  |  |
|  |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
|  | December 31, 2021 |
| Ameren: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 155  |  |  | $ | 155  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 155  |  |
| Investments in industrial development revenue bonds(a) | 248  |  |  | —  |  |  | 248  |  |  | —  |  |  | 248  |  |
| Short-term debt | 545  |  |  | —  |  |  | 545  |  |  | —  |  |  | 545  |  |
| Long-term debt (including current portion)(a) | 13,067  |  | (b) | —  |  |  | 13,930  |  |  | 591  |  | (c) | 14,521  |  |
| Ameren Missouri: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 8  |  |  | $ | 8  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 8  |  |
|  |  |  |  |  |  |  |  |  |  |
| Investments in industrial development revenue bonds(a) | 248  |  |  | —  |  |  | 248  |  |  | —  |  |  | 248  |  |
| Short-term debt | 165  |  |  | —  |  |  | 165  |  |  | —  |  |  | 165  |  |
|  |  |  |  |  |  |  |  |  |  |
| Long-term debt (including current portion)(a) | 5,619  |  | (b) | —  |  |  | 6,321  |  |  | —  |  |  | 6,321  |  |
| Ameren Illinois: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 133  |  |  | $ | 133  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 133  |  |
|  |  |  |  |  |  |  |  |  |  |
| Short-term debt | 103  |  |  | —  |  |  | 103  |  |  | —  |  |  | 103  |  |
|  |  |  |  |  |  |  |  |  |  |
| Long-term debt (including current portion) | 4,392  |  | (b) | —  |  |  | 4,971  |  |  | —  |  |  | 4,971  |  |
|  | December 31, 2020 |
| Ameren: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 301  |  |  | $ | 301  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 301  |  |
| Investments in industrial development revenue bonds(a) | 256  |  |  | —  |  |  | 256  |  |  | —  |  |  | 256  |  |
| Short-term debt | 490  |  |  | —  |  |  | 490  |  |  | —  |  |  | 490  |  |
| Long-term debt (including current portion)(a) | 11,086  |  | (b) | —  |  |  | 12,778  |  |  | 537  |  | (c) | 13,315  |  |
| Ameren Missouri: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 145  |  |  | $ | 145  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 145  |  |
| Advances to money pool | 139  |  |  | —  |  |  | 139  |  |  | —  |  |  | 139  |  |
| Investments in industrial development revenue bonds(a) | 256  |  |  | —  |  |  | 256  |  |  | —  |  |  | 256  |  |
|  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |
| Long-term debt (including current portion)(a) | 5,104  |  | (b) | —  |  |  | 6,160  |  |  | —  |  |  | 6,160  |  |
| Ameren Illinois: |  |  |  |  |  |  |  |  |  |
| Cash, cash equivalents, and restricted cash | $ | 147  |  |  | $ | 147  |  |  | $ | —  |  |  | $ | —  |  |  | $ | 147  |  |
|  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |
| Borrowings from money pool | 19  |  |  | —  |  |  | 19  |  |  | —  |  |  | 19  |  |
| Long-term debt (including current portion) | 3,946  |  | (b) | —  |  |  | 4,822  |  |  | —  |  |  | 4,822  |  |

(a)Ameren and Ameren Missouri have investments in industrial development revenue bonds, classified as held-to-maturity and recorded in “Other Assets,” that are equal to the finance obligations for the Peno Creek and Audrain CT energy centers. As of December 31, 2021 and 2020, the carrying amount of both the investments in industrial development revenue bonds and the finance obligations approximated fair value.(b)Included unamortized debt issuance costs, which were excluded from the fair value measurement, of $94 million, $38 million, and $39 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, as of December 31, 2021. Included unamortized debt issuance costs, which were excluded from the fair value measurement, of $84 million, $36 million, and $36 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, as of December 31, 2020.(c)The Level 3 fair value amount consists of ATXI’s senior unsecured notes.NOTE 9 – CALLAWAY ENERGY CENTERMaintenance OutageDuring its return to full power after the completion of the last refueling and maintenance outage in late December 2020, the Callaway Energy Center experienced a non-nuclear operating issue related to its generator. After replacement of certain key components of the generator, the energy center returned to service in early August 2021. The cost of generator repairs was approximately $60 million, which was largely capital expenditures. In April 2021, Ameren Missouri’s insurance claims were accepted by NEIL, which covered a significant portion of the capital expenditures and covered lost sales of up to $4.5 million weekly after March 17, 2021. Insurance recoveries related to lost sales were reflected in electric operating revenues and included in net energy costs under the FAC. Expected insurance recoveries related to the capital expenditures were reflected as a reduction to property, plant, and equipment. As of December 31, 2021, a $33 million insurance receivable was included in “Miscellaneous accounts receivable” on Ameren’s and Ameren Missouri’s balance sheets related to the capital expenditures and lost sales insurance claims. In January 2022, Ameren Missouri received $17 million in payments from NEIL and EMANI related to the capital expenditures insurance claims.131
