Exhibit 12.1
Ameren Corporation
Computation of Ratio of Earnings to Fixed Charges
(Thousands of Dollars, Except Ratios)
| Nine Months Ended September 30, 2011 | Year Ended December 31, 2010(a) | |||||||
Net income from continuing operations attributable to Ameren Corporation | $ | 493,599 | $ | 138,678 | ||||
Add- Net income attributable to noncontrolling interest | 1,542 | 3,366 | ||||||
Add- Taxes based on income | 292,894 | 325,320 | ||||||
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Net income before income taxes and noncontrolling interest | 788,035 | 467,364 | ||||||
Add- fixed charges: | ||||||||
Interest on short-term and long-term debt(b) | 348,469 | 511,468 | ||||||
Estimated interest cost within rental expense | 6,075 | 8,593 | ||||||
Amortization of net debt premium, discount, and expenses | 10,056 | 14,337 | ||||||
Subsidiary preferred stock dividends | 4,833 | 8,278 | ||||||
Adjust preferred stock dividends to pretax basis | 2,840 | 4,753 | ||||||
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Total fixed charges | 372,273 | 547,429 | ||||||
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Less: Adjustment of preferred stock dividends to pretax basis | 2,840 | 4,753 | ||||||
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Earnings available for fixed charges | $ | 1,157,468 | $ | 1,010,040 | ||||
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Ratio of earnings to fixed charges | 3.11 | 1.84 | ||||||
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| (a) | In the third quarter of 2010, Ameren Corporation recorded a goodwill and other impairment charge of $589 million. See Note 17 - Goodwill and Other Asset Impairments under Part II, Item 8, of the 2010 Form 10-K for additional information. |
| (b) | Includes interest expense related to uncertain tax positions |