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)



|                                                                                      |  |                                 |        |                                  |   |        
|------------------------------------------------------------------------------------- |  | ------------------------------- | ------ | -------------------------------- | - | -------
|                                                                                      |  | Three Months EndedMarch 31,2009 |        | Year
Ended      December 31,2008
|Net income from continuing operations                                                 |  | $                               | 33,343 |                                  | $ | 69,638 
|Add- Taxes based on income                                                            |  |                                 | 17,805 |                                  |   | 38,673 
|                                                                                      |  |                                 |        |                                  |   |        
|Net income before income taxes                                                        |  |                                 | 51,148 |                                  |   | 108,311
|Add- fixed charges:                                                                   |  |                                 |        |                                  |   |        
|Interest on long term debt(1)                                                         |  |                                 | 6,639  |                                  |   | 19,724 
|Estimated interest cost within rental expense                                         |  |                                 | 205    |                                  |   | 429    
|Amortization of net debt premium, discount, and expenses                              |  |                                 | 330    |                                  |   | 1,112  
|                                                                                      |  |                                 |        |                                  |   |        
|Total fixed charges                                                                   |  |                                 | 7,174  |                                  |   | 21,265 
|                                                                                      |  |                                 |        |                                  |   |        
|Earnings available for fixed charges                                                  |  |                                 | 58,322 |                                  |   | 129,576
|                                                                                      |  |                                 |        |                                  |   |        
|Ratio of earnings to fixed charges                                                    |  |                                 | 8.12   |                                  |   | 6.09   
|                                                                                      |  |                                 |        |                                  |   |        
|Earnings required for combined fixed charges and preferred stock dividends:           |  |                                 |        |                                  |   |        
|Preferred stock dividends                                                             |  |                                 | 218    |                                  |   | 1,354  
|Adjustment to pretax basis                                                            |  |                                 | 116    |                                  |   | 752    
|                                                                                      |  |                                 |        |                                  |   |        
|                                                                                      |  |                                 | 334    |                                  |   | 2,106  
|                                                                                      |  |                                 |        |                                  |   |        
|Combined fixed charges and preferred stock dividend requirements                      |  | $                               | 7,508  |                                  | $ | 23,371 
|                                                                                      |  |                                 |        |                                  |   |        
|Ratio of earnings to combined fixed charges and preferred stock dividend requirements |  |                                 | 7.76   |                                  |   | 5.54   
|                                                                                      |  |                                 |        |                                  |   |        



|(1) | Includes FIN 48 interest expense
|--- | --------------------------------