Exhibit 12Wisconsin Public Service
      CorporationRatio of Earnings to Fixed Charges
      andRatio of Earnings to Fixed Charges
      and Preferred Dividends(Millions)
                                                        
                                                        2008
                                                        
                                                        
                                                        2007
                                                        
                                                        
                                                        2006
                                                        
                                                        
                                                        2005
                                                        
                                                        
                                                        2004EARNINGSEarnings on common
      stock
                                                        
                                                        $
                                                        129.2
                                                        
                                                        
                                                        $
                                                        110.2
                                                        
                                                        
                                                        $
                                                        99.0
                                                        
                                                        
                                                        $
                                                        81.4
                                                        
                                                        
                                                        $
                                                        104.8Federal and state income
      taxes
                                                        
                                                        
                                                        73.1
                                                        
                                                        
                                                        
                                                        66.8
                                                        
                                                        
                                                        
                                                        58.3
                                                        
                                                        
                                                        
                                                        44.1
                                                        
                                                        
                                                        
                                                        51.3Net pretax
      income
                                                        
                                                        
                                                        202.3
                                                        
                                                        
                                                        
                                                        177.0
                                                        
                                                        
                                                        
                                                        157.3
                                                        
                                                        
                                                        
                                                        125.5
                                                        
                                                        
                                                        
                                                        156.1(Income) from less than 50% equity
      investees
                                                        
                                                        
                                                        (9.9
                                                        )
                                                        
                                                        
                                                        (9.3
                                                        )
                                                        
                                                        
                                                        (9.4
                                                        )
                                                        
                                                        
                                                        (7.5
                                                        )
                                                        
                                                        
                                                        (8.4
                                                        )Distributed earnings of less than
      50% equity investees
                                                        
                                                        
                                                        7.7
                                                        
                                                        
                                                        
                                                        6.8
                                                        
                                                        
                                                        
                                                        6.2
                                                        
                                                        
                                                        
                                                        5.5
                                                        
                                                        
                                                        
                                                        5.9Fixed
    charges
                                                        
                                                        
                                                        52.9
                                                        
                                                        
                                                        
                                                        50.2
                                                        
                                                        
                                                        
                                                        47.2
                                                        
                                                        
                                                        
                                                        42.7
                                                        
                                                        
                                                        
                                                        40.4Subtract preference dividend
      requirement
                                                        
                                                        
                                                        4.8
                                                        
                                                        
                                                        
                                                        4.9
                                                        
                                                        
                                                        
                                                        4.9
                                                        
                                                        
                                                        
                                                        4.7
                                                        
                                                        
                                                        
                                                        4.6Total earnings as
      defined
                                                        
                                                        $
                                                        248.2
                                                        
                                                        
                                                        $
                                                        219.8
                                                        
                                                        
                                                        $
                                                        196.4
                                                        
                                                        
                                                        $
                                                        161.5
                                                        
                                                        
                                                        $
                                                        189.4FIXED
    CHARGESInterest on long-term debt,
      including related amortization
                                                        
                                                        $
                                                        42.8
                                                        
                                                        
                                                        $
                                                        36.0
                                                        
                                                        
                                                        $
                                                        29.4
                                                        
                                                        
                                                        $
                                                        29.8
                                                        
                                                        
                                                        $
                                                        29.9Other
    interest
                                                        
                                                        
                                                        3.0
                                                        
                                                        
                                                        
                                                        7.8
                                                        
                                                        
                                                        
                                                        11.2
                                                        
                                                        
                                                        
                                                        6.5
                                                        
                                                        
                                                        
                                                        4.5Interest factor applicable to
      rentals
                                                        
                                                        
                                                        2.3
                                                        
                                                        
                                                        
                                                        1.5
                                                        
                                                        
                                                        
                                                        1.7
                                                        
                                                        
                                                        
                                                        1.7
                                                        
                                                        
                                                        
                                                        1.4Fixed charges before preferred
      dividend requirement
                                                        
                                                        $
                                                        48.1
                                                        
                                                        
                                                        $
                                                        45.3
                                                        
                                                        
                                                        $
                                                        42.3
                                                        
                                                        
                                                        $
                                                        38.0
                                                        
                                                        
                                                        $
                                                        35.8Ratio of earnings to fixed
      charges
                                                        
                                                        
                                                        5.2
                                                        
                                                        
                                                        
                                                        4.9
                                                        
                                                        
                                                        
                                                        4.6
                                                        
                                                        
                                                        
                                                        4.3
                                                        
                                                        
                                                        
                                                        5.3Preferred dividends (grossed up)
      (see below)
                                                        
                                                        $
                                                        4.8
                                                        
                                                        
                                                        $
                                                        4.9
                                                        
                                                        
                                                        $
                                                        4.9
                                                        
                                                        
                                                        $
                                                        4.7
                                                        
                                                        
                                                        $
                                                        4.6Total fixed charges including
      preferred dividend
                                                        
                                                        $
                                                        52.9
                                                        
                                                        
                                                        $
                                                        50.2
                                                        
                                                        
                                                        $
                                                        47.2
                                                        
                                                        
                                                        $
                                                        42.7
                                                        
                                                        
                                                        $
                                                        40.4Ratio of earnings to fixed charges
      and preferred dividends
                                                        
                                                        
                                                        4.7
                                                        
                                                        
                                                        
                                                        4.4
                                                        
                                                        
                                                        
                                                        4.2
                                                        
                                                        
                                                        
                                                        3.8
                                                        
                                                        
                                                        
                                                        4.7PREFERRED DIVIDEND
      CALCULATION:Preferred
      dividends
                                                        
                                                        $
                                                        3.1
                                                        
                                                        
                                                        $
                                                        3.1
                                                        
                                                        
                                                        $
                                                        3.1
                                                        
                                                        
                                                        $
                                                        3.1
                                                        
                                                        
                                                        $
                                                        3.1Tax rate
                                                        
                                                        
                                                        35.8
                                                        %
                                                        
                                                        
                                                        37.3
                                                        %
                                                        
                                                        
                                                        36.6
                                                        %
                                                        
                                                        
                                                        34.5
                                                        %
                                                        
                                                        
                                                        32.4
                                                        %Preferred dividends (grossed
      up)
                                                        
                                                        $
                                                        4.8
                                                        
                                                        
                                                        $
                                                        4.9
                                                        
                                                        
                                                        $
                                                        4.9
                                                        
                                                        
                                                        $
                                                        4.7
                                                        
                                                        
                                                        $
                                                        4.6