**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)** |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
|                                                                                                                                                                                                                                                                  |   | **3                Months Ended**  |   |   | **Year                Ended** |   |
|                                                                                                                                                                                                                                                                  |   | **March                31,**  |   |   | **December                31,** |   |
|                                                                                                                                                                                                                                                                  |   | **2007** |   |   | **2006** |   |
| Net                income from continuing operations                                                                                                                                                                                                                  | $ | 25,982 |   | $ | 47,012 |   |
| Less-                Change in accounting principle                                                                                                                                                                                                                   |   | - |   |   | - |   |
| Less-                Income from equity investee                                                                                                                                                                                                                      |   | - |   |   | - |   |
| Add-                Taxes based on income                                                                                                                                                                                                                             |   | 14,073 |   |   | 9,966 |   |
| Net                income before income taxes and change in accounting                principle                                                                                                                                                                       |   | 40,055 |   |   | 56,978 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Add-                fixed charges:                                                                                                                                                                                                                                    |   |   |   |   |   |   |
| Interest                on long term debt                                                                                                                                                                                                                             |   | 5,453 |   |   | 18,044 |   |
| Estimated                interest cost within rental expense                                                                                                                                                                                                          |   | 84 |   |   | 289 |   |
| Amortization                of net debt premium, discount,and                expenses                                                                                                                                                                                 |   | 254 |   |   | 705 |   |
| Total                fixed charges                                                                                                                                                                                                                                    |   | 5,791 |   |   | 19,038 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Earnings                available for fixed charges                                                                                                                                                                                                                   |   | 45,846 |   |   | 76,016 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Ratio                of earnings to fixed charges                                                                                                                                                                                                                     |   | 7.91 |   |   | 3.99 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Earnings                required for combined fixedcharges                and preferred stock dividends:                                                                                                                                                              |   |   |   |   |   |   |
| Preferred                stock dividends                                                                                                                                                                                                                              |   | 475 |   |   | 1,933 |   |
| Adjustment                to pre-tax basis                                                                                                                                                                                                                            |   | 257 |   |   | 410 |   |
|                                                                                                                                                                                                                                                                  |   | 732 |   |   | 2,343 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Combined                fixed charges and preferred stockdividend                requirements                                                                                                                                                                         | $ | 6,523 |   | $ | 21,381 |   |
|                                                                                                                                                                                                                                                                  |   |   |   |   |   |   |
| Ratio                of earnings to combined fixed chargesand                preferred stock dividend requirements                                                                                                                                                    |   | 7.02 |   |   | 3.55 |   |