| Exhibit 12(b)                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------|
| PPL ENERGY SUPPLY, LLC AND SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES(Millions of Dollars) |
|                                                                                                                |
|                                                                                                                |   | Six Months Ended June 30, |   | Years Ended December 31, |
|                                                                                                                |   | 2010 |   | 2009 |   | 2008 |   | 2007 |   | 2006 |   | 2005 |
| Earnings, as defined:                                                                                               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Income from Continuing Operations Before Income Taxes                                                               |   | $ | 413 |   |   | $ | 334 |   |   | $ | 1,085 |   |   | $ | 1,095 |   |   | $ | 841 |   |   | $ | 619 |   |
| Less earnings of equity method investments                                                                          |   |   | 1 |   |   |   | 2 |   |   |   | 1 |   |   |   | 3 |   |   |   | 5 |   |   |   | 5 |   |
| Distributed income from equity method investments                                                                   |   |   | 4 |   |   |   | 2 |   |   |   | 1 |   |   |   | 5 |   |   |   | 3 |   |   |   | 5 |   |
|                                                                                                                |   |   | 416 |   |   |   | 334 |   |   |   | 1,085 |   |   |   | 1,097 |   |   |   | 839 |   |   |   | 619 |   |
|                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total fixed charges as below                                                                                        |   |   | 204 |   |   |   | 364 |   |   |   | 390 |   |   |   | 388 |   |   |   | 326 |   |   |   | 307 |   |
| Less:                                                                                                               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Capitalized interest                                                                                                |   |   | 14 |   |   |   | 44 |   |   |   | 57 |   |   |   | 54 |   |   |   | 21 |   |   |   | 7 |   |
| Interest expense related to discontinued operations                                                                 |   |   |   |   |   |   | 5 |   |   |   | 4 |   |   |   | 27 |   |   |   | 30 |   |   |   | 31 |   |
| Total fixed charges included in Income from Continuing Operations Before Income Taxes                               |   |   | 190 |   |   |   | 315 |   |   |   | 329 |   |   |   | 307 |   |   |   | 275 |   |   |   | 269 |   |
|                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total earnings                                                                                                      |   | $ | 606 |   |   | $ | 649 |   |   | $ | 1,414 |   |   | $ | 1,404 |   |   | $ | 1,114 |   |   | $ | 888 |   |
|                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fixed charges, as defined:                                                                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest on long-term debt                                                                                          |   | $ | 153 |   |   | $ | 284 |   |   | $ | 345 |   |   | $ | 353 |   |   | $ | 296 |   |   | $ | 259 |   |
| Interest on short-term debt and other interest                                                                      |   |   | 27 |   |   |   | 29 |   |   |   | 27 |   |   |   | 24 |   |   |   | 16 |   |   |   | 26 |   |
| Amortization of debt discount, expense and premium - net                                                            |   |   | 4 |   |   |   | 8 |   |   |   | 2 |   |   |   | (3 | ) |   |   | (1 | ) |   |   | 7 |   |
| Estimated interest component of operating rentals                                                                   |   |   | 19 |   |   |   | 42 |   |   |   | 15 |   |   |   | 14 |   |   |   | 15 |   |   |   | 15 |   |
| Fixed charges of majority-owned share of 50% or less-owned persons                                                  |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total fixed charges (a)                                                                                             |   | $ | 204 |   |   | $ | 364 |   |   | $ | 390 |   |   | $ | 388 |   |   | $ | 326 |   |   | $ | 307 |   |
|                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio of earnings to fixed charges                                                                                  |   |   | 3.0 |   |   |   | 1.8 |   |   |   | 3.6 |   |   |   | 3.6 |   |   |   | 3.4 |   |   |   | 2.9 |   |

| (a) |   | Interest on unrecognized tax benefits is not included in fixed charges. |
|-----|--------|-------------------------------------------------------------------------|