Exhibit
      12.1GREAT
      PLAINS ENERGYCOMPUTATION
      OF RATIO OF EARNINGS TO FIXED CHARGESYear
      to DateJune
      302009
                                                                                                                                                                                                                            2008
                                                                                                                                                                                                                            2007
                                                                                                                                                                                                                            2006
                                                                                                                                                                                                                            2005
                                                                                                                                                                                                                            2004(millions)Income
      from continuing operations
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            58.6
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            119.7
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            120.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            136.7
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            142.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            127.2AddEquity
      investment loss
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            1.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            2.0
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            1.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.4
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            1.5Income
      subtotal
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            58.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            121.0
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            122.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            138.6
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            143.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            128.7AddTaxes
      on income
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            (9.3
                                                                                                                                                                                                                            )
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            63.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            44.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            60.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            22.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            30.7Kansas
      City earnings tax
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            -
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            0.5Total
      taxes on income
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            (9.3
                                                                                                                                                                                                                            )
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            64.1
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            45.4
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            60.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            22.7
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            31.2Interest
      on value of leased property
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.6
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            4.1
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            6.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            6.2Interest
      on long-term debt
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            92.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            126.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            74.1
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            62.6
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            64.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            66.1Interest
      on short-term debt
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            7.0
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            18.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            26.4
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            9.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            4.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            4.3Other
      interest expense and amortization (a)
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.7
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            (1.4
                                                                                                                                                                                                                            )
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            5.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.9
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            4.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            13.6Total
      fixed charges
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            107.0
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            146.6
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            110.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            79.8
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            79.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            90.2Earnings
      before taxes onincome
      and fixed charges
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            156.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            331.7
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            278.5
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            279.2
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            245.3
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            $
                                                                                                                                                                                                                            250.1Ratio
      of earnings to fixed charges
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            1.46
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            2.26
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            2.53
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.50
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            3.09
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            
                                                                                                                                                                                                                            2.77(a)
                                                                                                                                                                                                                            On
      January 1, 2007, Great Plains Energy adopted FIN No. 48, "Accounting for
      Uncertainty in Income Taxes," andalong
      with the adoption elected to make an accounting policy change to recognize
      interest related to uncertain taxpositions
      in interest
expense.