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, |       
|                                                                                      |  | 2004                    |        | 2005 |   |        | 2006 |  | 2007 |        |  | 2008 |        
|Net income from continuing operations                                                 |  | $                       | 32,384 |      | $ | 25,296 |      |  | $    | 47,012 |  | $    | 75,984  |     |  | $ | 69,638  |    
|Less- Change in accounting principle                                                  |  |                         |       |      |   | (2,497 | )    |  |      |       |  |      |        |     |  |   |        |    
|Add- Taxes based on income                                                            |  |                         | 5,450  |      |   | 16,357 |      |  |      | 9,966  |  |      | 39,195  |     |  |   | 38,673  |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Net income before income taxes and change in accounting principle                     |  |                         | 37,834 |      |   | 44,150 |      |  |      | 56,978 |  |      | 115,179 |     |  |   | 108,311 |    
|Add- fixed charges:                                                                   |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Interest on long term debt                                                            |  |                         | 15,179 |      |   | 13,918 |      |  |      | 18,044 |  |      | 26,071  | (1) |  |   | 19,724  | (1)
|Estimated interest cost within rental expense                                         |  |                         | 395    |      |   | 390    |      |  |      | 289    |  |      | 343     |     |  |   | 429     |    
|Amortization of net debt premium, discount, and expenses                              |  |                         | 611    |      |   | 473    |      |  |      | 705    |  |      | 1,065   |     |  |   | 1,112   |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Total fixed charges                                                                   |  |                         | 16,185 |      |   | 14,781 |      |  |      | 19,038 |  |      | 27,479  |     |  |   | 21,265  |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Earnings available for fixed charges                                                  |  |                         | 54,019 |      |   | 58,931 |      |  |      | 76,016 |  |      | 142,658 |     |  |   | 129,576 |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Ratio of earnings to fixed charges                                                    |  |                         | 3.33   |      |   | 3.98   |      |  |      | 3.99   |  |      | 5.19    |     |  |   | 6.09    |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Earnings required for combined fixed charges and preferred stock dividends:           |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Preferred stock dividends                                                             |  |                         | 2,062  |      |   | 1,998  |      |  |      | 1,933  |  |      | 1,869   |     |  |   | 1,354   |    
|Adjustment to pre-tax basis                                                           |  |                         | 346    |      |   | 1,293  |      |  |      | 410    |  |      | 977     |     |  |   | 752     |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|                                                                                      |  |                         | 2,408  |      |   | 3,291  |      |  |      | 2,343  |  |      | 2,846   |     |  |   | 2,106   |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Combined fixed charges and preferred stock dividend requirements                      |  | $                       | 18,593 |      | $ | 18,072 |      |  | $    | 21,381 |  | $    | 30,325  |     |  | $ | 23,371  |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    
|Ratio of earnings to combined fixed charges and preferred stock dividend requirements |  |                         | 2.90   |      |   | 3.26   |      |  |      | 3.55   |  |      | 4.70    |     |  |   | 5.54    |    
|                                                                                      |  |                         |        |      |   |        |      |  |      |        |  |      |         |     |  |   |         |    

(1)Includes FIN 48 interest expense