Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 62

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 8
Chunk 62
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 – Commitments and Contingencies, and Securitization of Rush Island Energy Center Costs under Note 2 – Rate and Regulatory Matters for additional information on the accelerated retirement of the Rush Island Energy Center.

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Table of Contents

Capitalized software costs are classified within “Property, Plant, and Equipment, Net” on the balance sheet and are amortized on a straight-line basis over the expected period of benefit, ranging from 2 to 15 years, with the amortization expense included in “Depreciation and amortization” on the statement of income. Deferred cloud implementation costs are classified within “Other Assets” on the balance sheet and are amortized on a straight-line basis over the term of the associated hosting arrangement, ranging from 5 to 15 years, with the amortization expense included in “Other operations and maintenance” on the statement of income. The following table presents the amortization expense, gross carrying value, and related accumulated amortization of capitalized software and deferred cloud implementation costs by year:Amortization ExpenseGross Carrying ValueAccumulated Amortization2024202320222024202320242023Capitalized software costs:Ameren$224 $212 $159 $1,996 $1,823 $(1,348)$(1,126)Ameren Missouri118 114 85 881 795 (567)(453)Ameren Illinois100 92 69 867 786 (552)(452)Deferred cloud implementation costs:Ameren$20 $17 $15 $157 $142 $(71)$(51)Ameren Missouri9 8 7 71 63 (32)(23)Ameren Illinois10 9 8 82 76 (36)(26)Annual amortization expense for capitalized software placed in service as of December 31, 2024, is estimated to be as follows:20252026202720282029Ameren$190 $147 $110 $69 $38 Ameren Missouri98 73 54 33 17 Ameren Illinois85 70 53 34 20 

NOTE 4 – SHORT-TERM DEBT AND LIQUIDITY

The liquidity needs of the Ameren Companies are supported through the use of available cash, drawings under committed credit agreements, commercial paper issuances, and/or, in the case of Ameren Missouri and Ameren Illinois,