Exhibit 12.6

Central Illinois Light Company

Computation of Ratios of Earnings to Fixed Charges and Combined

Fixed Charges and Preferred Stock Dividend Requirements

(Thousands of Dollars, Except Ratios)



|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|------------------------------------------------------------------------------------- |  | ----------------------- | ------ | ---- | - | ------- |  | ---- | ------ | ---- | - | ------ |  | - | ------ | -
|                                                                                      |  | Year Ended December 31, |       
|                                                                                      |  | 2001                    |        | 2002 |   | 2003    |  | 2004 |        | 2005 |  
|Net income from continuing operations                                                 |  | $                       | 14,638 |      | $ | 50,128  |  | $    | 44,883 |      | $ | 32,384 |  | $ | 25,296 |  
|Less- Change in accounting principle                                                  |  |                         | -      |      |   | -       |  |      | 24,080 |      |   | -      |  |   | (2,497 | )
|Add- Taxes based on income                                                            |  |                         | 7,789  |      |   | 26,472  |  |      | 11,905 |      |   | 5,450  |  |   | 16,357 |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Net income before income taxes and change in accounting principle                     |  |                         | 22,427 |      |   | 76,600  |  |      | 32,708 |      |   | 37,834 |  |   | 44,150 |  
|                                                                                      |  |                         |        |      |  
|Add- fixed charges:                                                                   |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Interest on long term debt                                                            |  |                         | 28,011 |      |   | 27,196  |  |      | 16,358 |      |   | 15,179 |  |   | 13,918 |  
|Estimated interest cost within rental expense                                         |  |                         | 857    |      |   | 1,619   |  |      | 1,468  |      |   | 395    |  |   | 390    |  
|Amortization of net debt premium, discount, and expenses                              |  |                         | 414    |      |   | 544     |  |      | 708    |      |   | 611    |  |   | 473    |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Total fixed charges                                                                   |  |                         | 29,282 |      |   | 29,359  |  |      | 18,534 |      |   | 16,185 |  |   | 14,781 |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Earnings available for fixed charges                                                  |  |                         | 51,709 |      |   | 105,959 |  |      | 51,242 |      |   | 54,019 |  |   | 58,931 |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Ratio of earnings to fixed charges                                                    |  |                         | 1.76   |      |   | 3.60    |  |      | 2.76   |      |   | 3.33   |  |   | 3.98   |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Earnings required for combined fixed charges and preferred stock dividends:           |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Preferred stock dividends                                                             |  |                         | 2,159  |      |   | 2,159   |  |      | 2,127  |      |   | 2,062  |  |   | 1,998  |  
|Adjustment to pre-tax basis                                                           |  |                         | 1,149  |      |   | 1,140   |  |      | 1,217  |      |   | 346    |  |   | 1,293  |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|                                                                                      |  |                         | 3,308  |      |   | 3,299   |  |      | 3,344  |      |   | 2,408  |  |   | 3,291  |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Combined fixed charges and preferred stock dividend requirements                      |  | $                       | 32,590 |      | $ | 32,658  |  | $    | 21,878 |      | $ | 18,593 |  | $ | 18,072 |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |  
|Ratio of earnings to combined fixed charges and preferred stock dividend requirements |  |                         | 1.58   |      |   | 3.24    |  |      | 2.34   |      |   | 2.90   |  |   | 3.26   |  
|                                                                                      |  |                         |        |      |   |         |  |      |        |      |   |        |  |   |        |