|                                                                                    |   |                         |    | Twelve  |   | Three   |   |
|-----------------------------------------------------------------------------------------|--------|------------------------------|---------|--------------|--------|--------------|--------|
|                                                                                    |   |                         |    | Months  |   | Months       |   |
|                                                                                    |   | Year      Ended December 31, |    | Ended        |   | Ended        |   |
|                                                                                    |   | 2004                         |    | 2005         |   | 2006         |   | 2007 |   |   |  2008 |   | 3/31/2009 |   | 3/31/2009 |   |
| EARNINGS                                                                                |   |                    |    |    |   |    |   |    |   |   |   |   |   |   |   |   |   |   |
| Income      Before Income Taxes                                                         |   | $                            | 238,226 |         | $      | 202,021      |   | $ | 282,865 |   | $ | 195,613 |   | $ | 166,801 |   | $ | 199,936 |   | $ | 111,311 |   |
| Fixed      Charges (as below)                                                           |   |                         | 110,735 |         |   | 118,365      |   |   | 151,874 |   |   | 178,067 |   |   | 225,573 |   |   | 231,347 |   |   | 53,935 |   |
| Total      Earnings                                                                     |   | $                            | 348,961 |         | $      | 320,386      |   | $ | 434,739 |   | $ | 373,680 |   | $ | 392,374 |   | $ | 431,283 |   | $ | 165,246 |   |
|                                                                                    |   |                         |    |         |   |         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| FIXED      CHARGES                                                                      |   |                         |    |         |   |         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest      Expense                                                                   |   | $                            | 99,135  |         | $      | 106,301      |   | $ | 129,106 |   | $ | 165,405 |   | $ | 209,733 |   | $ | 215,298 |   | $ | 49,705 |   |
| Credit      for Allowance for Borrowed Funds Used         During Construction |   |                         | 8,100   |         |   | 8,764        |   |   | 17,668 |   |   | 6,962 |   |   | 9,040 |   |   | 9,249 |   |   | 2,530 |   |
| Estimated      Interest Element in Lease Rentals                                        |   |                         | 3,500   |         |   | 3,300        |   |   | 5,100 |   |   | 5,700 |   |   | 6,800 |   |   | 6,800 |   |   | 1,700 |   |
| Total Fixed      Charges                                                                |   | $                            | 110,735 |         | $      | 118,365      |   | $ | 151,874 |   | $ | 178,067 |   | $ | 225,573 |   | $ | 231,347 |   | $ | 53,935 |   |
|                                                                                    |   |                         |    |         |   |         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio of Earnings to Fixed      Charges                                                 |   |                         | 3.15    |         |   | 2.70         |   |   | 2.86 |   |   | 2.09 |   |   | 1.73 |   |   | 1.86 |   |   | 3.06 |   |