| Central      Illinois Light CompanyComputation      of Ratios of Earnings to Fixed Charges and CombinedFixed      Charges and Preferred Stock Dividend Requirements(Thousands      of Dollars, Except Ratios) |                |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------|
|                                                                                                                                                                                                          |                |   |   |   |   |
|                                                                                                                                                                                                          |                |   |   |   |   |
|                                                                                                                                                                                                          | 6      Months Ended |   |   | Year      Ended |   |
|                                                                                                                                                                                                          | June      30,       |   |   | December      31, |   |
|                                                                                                                                                                                                          | 2008                |   |   | 2007 |   |
| Net      income from continuing operations                                                                                                                                                                    | $                   | 37,830 |   |   | $ | 75,984 |   |
| Less-      Change in accounting principle                                                                                                                                                                     |                | - |   |   |   | - |   |
| Add-      Taxes based on income                                                                                                                                                                               |                | 21,283 |   |   |   | 39,195 |   |
| Net      income before income taxes and change in accounting    principle                                                                                                                                     |                | 59,113 |   |   |   | 115,179 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Add-      fixed charges:                                                                                                                                                                                      |                |   |   |   |   |   |   |
| Interest on long term      debt (1)                                                                                                                                                                      |                | 10,368 |   |   |   | 26,071 |   |
| Estimated      interest cost within rental expense                                                                                                                                                            |                | 186 |   |   |   | 343 |   |
| Amortization      of net debt premium, discount,and      expenses                                                                                                                                             |                | 555 |   |   |   | 1,065 |   |
| Total      fixed charges                                                                                                                                                                                      |                | 11,109 |   |   |   | 27,479 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Earnings      available for fixed charges                                                                                                                                                                     |                | 70,222 |   |   |   | 142,658 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Ratio      of earnings to fixed charges                                                                                                                                                                       |                | 6.32 |   |   |   | 5.19 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Earnings      required for combined fixedcharges      and preferred stock dividends:                                                                                                                          |                |   |   |   |
| Preferred      stock dividends                                                                                                                                                                                |                | 918 |   |   |   | 1,869 |   |
| Adjustment      to pre-tax basis                                                                                                                                                                              |                | 517 |   |   |   | 977 |   |
|                                                                                                                                                                                                          |                | 1,435 |   |   |   | 2,846 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Combined      fixed charges and preferred stockdividend      requirements                                                                                                                                     | $                   | 12,544 |   |   | $ | 30,325 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| Ratio      of earnings to combined fixed chargesand      preferred stock dividend requirements                                                                                                                |                | 5.59 |   |   |   | 4.70 |   |
|                                                                                                                                                                                                          |                |   |   |   |   |   |   |
| (1)  Includes      FIN 48 interest expense                                                                                                                                                          |                |   |   |   |   |   |   |