| Exhibit                12.1                                                              |   |
|------------------------------------------------------------------------------------------|--------|
| Wisconsin                Public Service                Corporation                       |   |
| Ratio                of Earnings to Fixed Charges                and                     |   |
| Ratio                of Earnings to Fixed Charges                and Preferred Dividends |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| (Millions)                                                                               |   | 2007 |   |   | 2006 |   |   | 2005 |   |   | 2004 |   |   | 2003 |   |
| EARNINGS                                                                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Earnings                on common stock                                                  |   | $ | 110.2 |   |   | $ | 99.0 |   |   | $ | 81.4 |   |   | $ | 104.8 |   |   | $ | 78.9 |   |
| Federal                and state income                taxes                             |   |   | 66.8 |   |   |   | 58.3 |   |   |   | 44.1 |   |   |   | 51.3 |   |   |   | 45.7 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net                pretax income                                                         |   |   | 177.0 |   |   |   | 157.3 |   |   |   | 125.5 |   |   |   | 156.1 |   |   |   | 124.6 |   |
| (Income)                from less than 50% equity                investees               |   |   | (9.3 | ) |   |   | (9.4 | ) |   |   | (7.5 | ) |   |   | (8.4 | ) |   |   | (6.0 | ) |
| Distributed                earnings of less than                50% equity investees     |   |   | 6.8 |   |   |   | 6.2 |   |   |   | 5.5 |   |   |   | 5.9 |   |   |   | 4.3 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fixed                charges                                                             |   |   | 50.2 |   |   |   | 47.2 |   |   |   | 42.7 |   |   |   | 40.4 |   |   |   | 38.8 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Subtract                preference dividend                requirement                   |   |   | 4.9 |   |   |   | 4.9 |   |   |   | 4.7 |   |   |   | 4.6 |   |   |   | 4.8 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total                earnings as defined                                                 |   | $ | 219.8 |   |   | $ | 196.4 |   |   | $ | 161.5 |   |   | $ | 189.4 |   |   | $ | 156.9 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| FIXED                CHARGES                                                             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest                on long-term debt,                including related amortization |   | $ | 36.0 |   |   | $ | 29.4 |   |   | $ | 29.8 |   |   | $ | 29.9 |   |   | $ | 27.8 |   |
| Other                interest                                                            |   |   | 7.8 |   |   |   | 11.2 |   |   |   | 6.5 |   |   |   | 4.5 |   |   |   | 4.9 |   |
| Interest                factor applicable to                rentals                      |   |   | 1.5 |   |   |   | 1.7 |   |   |   | 1.7 |   |   |   | 1.4 |   |   |   | 1.3 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fixed                charges before preferred                dividend requirement        |   | $ | 45.3 |   |   | $ | 42.3 |   |   | $ | 38.0 |   |   | $ | 35.8 |   |   | $ | 34.0 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio                of earnings to fixed                charges                         |   |   | 4.9 |   |   |   | 4.6 |   |   |   | 4.3 |   |   |   | 5.3 |   |   |   | 4.6 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Preferred                dividends (grossed up)                (see below)               |   | $ | 4.9 |   |   | $ | 4.9 |   |   | $ | 4.7 |   |   | $ | 4.6 |   |   | $ | 4.8 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total                fixed charges including                preferred dividend           |   | $ | 50.2 |   |   | $ | 47.2 |   |   | $ | 42.7 |   |   | $ | 40.4 |   |   | $ | 38.8 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio                of earnings to fixed charges                and preferred dividends |   |   | 4.4 |   |   |   | 4.2 |   |   |   | 3.8 |   |   |   | 4.7 |   |   |   | 4.0 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| PREFERRED                DIVIDEND                CALCULATION:                            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Preferred                dividends                                                       |   | $ | 3.1 |   |   | $ | 3.1 |   |   | $ | 3.1 |   |   | $ | 3.1 |   |   | $ | 3.1 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Tax                rate                                                                  |   |   | 37.3 | % |   |   | 36.6 | % |   |   | 34.5 | % |   |   | 32.4 | % |   |   | 35.6 | % |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Preferred                dividends (grossed                up)                           |   | $ | 4.9 |   |   | $ | 4.9 |   |   | $ | 4.7 |   |   | $ | 4.6 |   |   | $ | 4.8 |   |
|                                                                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

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