Exhibit 12.2 ILLINOIS POWER COMPANY STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Twelve Nine Months Ended Months Ended September September (Thousands of Dollars) 1999 1999 ** 1999 ---------------------------- -------------- Earnings Available for Fixed Charges: As Restated Net Income (Loss) ($1,474,757) ($1,474,757) $102,883 Add: Income Taxes: Current 2,045 2,045 19,196 Deferred - Net 48,481 48,481 64,300 Allocated income taxes (18,325) (18,325) (17,361) Investment tax credit - deferred (4,180) (4,180) (1,094) Income tax effect of CPS impairment (1,143,252) (1,143,252) - Interest on long-term debt 120,760 120,760 92,419 Amortization of debt expense and premium-net, and other interest charges 44,630 44,630 39,483 One-third of all rentals (Estimated to be representative of the interest component) 3,956 3,956 2,703 Interest on in-core fuel 5,401 5,401 4,424 CPS Impairment - 2,666,909 - ----------- ------------ --------- Earnings (loss) available for fixed charges ($2,415,241) $251,668 $306,953 =========== ============ ========= Fixed charges: Interest on long-term debt $120,760 $120,760 $92,419 Amortization of debt expense and premium-net, and other interest charges 52,327 52,327 45,123 One-third of all rentals (Estimated to be representative of the interest component) 3,956 3,956 2,703 ----------- ------------ --------- Total Fixed Charges $177,043 $177,043 $140,245 =========== ============ ========= Ratio of earnings to fixed charges N/A * 1.42 2.19 =========== ============ ========= * Earnings are inadequate to cover fixed charges. Additional earnings (thousands) $2,592,284 are required to attain a one-to-one ratio of Earnings to Fixed Charges. ** Supplemental ratio of earnings to fixed charges presented to exclude write-off related to Clinton Impairment. 63