**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)** |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                          |   |   |   |   |
|                                                                                                                                                                                                                                                                          | **Nine                  Months** |   | **Year** |   |
|                                                                                                                                                                                                                                                                          | **Ended** |   | **Ended** |   |
|                                                                                                                                                                                                                                                                          | **September                  30,** |   | **December                  31,** |   |
|                                                                                                                                                                                                                                                                          | **2006** |   | **2005** |   |
| Net                  income from continuing operations                                                                                                                                                                                                                        | $ | 44,815 |   | $ | 25,296 |   |
| Less-                  Change in accounting principle                                                                                                                                                                                                                         |   | - |   |   | (2,497 | ) |
| Add-                  Taxes based on income                                                                                                                                                                                                                                   |   | 11,532 |   |   | 16,357 |   |
| Net                  income before income taxes and change in accounting                  principle                                                                                                                                                                           |   | 56,347 |   |   | 44,150 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Add-                  fixed charges:                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Interest                  on long term debt                                                                                                                                                                                                                                   |   | 12,469 |   |   | 13,918 |   |
| Estimated                  interest cost within rental expense                                                                                                                                                                                                                |   | 215 |   |   | 390 |   |
| Amortization                  of net debt premium, discount,and                  expenses                                                                                                                                                                                     |   | 450 |   |   | 473 |   |
| Total                  fixed charges                                                                                                                                                                                                                                          |   | 13,134 |   |   | 14,781 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Earnings                  available for fixed charges                                                                                                                                                                                                                         |   | 69,481 |   |   | 58,931 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Ratio                  of earnings to fixed charges                                                                                                                                                                                                                           |   | 5.29 |   |   | 3.98 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Earnings                  required for combined fixedcharges                  and preferred stock dividends:                                                                                                                                                                  |   |   |   |   |   |   |
| Preferred                  stock dividends                                                                                                                                                                                                                                    |   | 1,458 |   |   | 1,998 |   |
| Adjustment                  to pre-tax basis                                                                                                                                                                                                                                  |   | 375 |   |   | 1,293 |   |
|                                                                                                                                                                                                                                                                          |   | 1,833 |   |   | 3,291 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Combined                  fixed charges and preferred stockdividend                  requirements                                                                                                                                                                             | $ | 14,967 |   | $ | 18,072 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |
| Ratio                  of earnings to combined fixed chargesand                  preferred stock dividend requirements                                                                                                                                                        |   | 4.64 |   |   | 3.26 |   |
|                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |