Exhibit 12.1 GREAT PLAINS ENERGY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 2002 2001 2000 1999 1998 (Thousands) Income (loss) before extraordinary item and cumulative effect of changes in accounting principles $ 129,188 $ (40,043) $ 128,631 $ 81,915 $ 120,722 Add: Equity investment losses 1,173 376 19,441 24,951 11,683 Minority interests in subsidiaries - (5,038) - 1 (2,222) Income subtotal 130,361 (44,705) 148,072 106,867 130,183 Add: Taxes on income 48,285 (35,914) 53,166 3,180 32,800 Kansas City earnings tax 635 583 421 602 864 Total taxes on income 48,920 (35,331) 53,587 3,782 33,664 Interest on value of leased property 7,093 10,679 11,806 8,577 8,482 Interest on long-term debt 67,551 84,995 60,956 51,327 57,012 Interest on short-term debt 6,312 9,915 11,537 4,362 295 Mandatorily redeemable Preferred Securities 12,450 12,450 12,450 12,450 12,450 Other interest expense and amortization 3,760 5,188 2,927 3,573 4,457 Total fixed charges 97,166 123,227 99,676 80,289 82,696 Earnings before taxes on income and fixed charges 276,447 43,191 301,335 190,938 246,543 Ratio of earnings to fixed charges 2.85 (a) 3.02 2.38 2.98 (a) An $80.0 million deficiency in earnings caused the ratio of earnings to fixed charges to be less than a one-to-one coverage. A $195.8 million net write-off before income taxes related to the bankruptcy filing of DTI was recorded in 2001.