CENTRAL ILLINOIS PUBLIC SERVICE COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS 12 Months Ended Year Ended December 31, September 30, --------------------------------------------------------------------------- 1995 1996 1997 1998 1999 2000 ---- ---- ---- ---- ---- ---- Thousands of Dollars Except Ratios Net Income $70,631 $77,393 $38,620 $80,147 $53,980 $53,766 Add- Extraordinary items net of tax - - 24,853 - - - ---------- -------- -------- -------- -------- ------------- Net income from continuing operations 70,631 77,393 63,473 80,147 53,980 53,766 Taxes based on income 44,483 47,286 33,922 45,412 30,763 34,806 ---------- -------- -------- -------- -------- ------------- Net income before income taxes 115,114 124,679 97,395 125,559 84,743 88,572 ---------- -------- -------- -------- -------- ------------- Add- fixed charges: Interest on long term debt 31,168 31,409 32,271 37,260 38,223 31,223 Other interest 853 4,636 2,875 1,647 3,373 7,259 Amortization of net debt premium, discount, expenses and losses 1,703 1,709 1,643 1,132 1,139 1,085 ---------- -------- -------- -------- -------- ------------- Total fixed charges 33,724 37,754 36,789 40,039 42,735 39,567 ---------- -------- -------- -------- -------- ------------- Earnings available for fixed charges 148,838 162,433 134,184 165,598 127,478 128,139 ========== ======== ======== ======== ======== ============= Ratio of earnings to fixed charges 4.41 4.30 3.64 4.13 2.98 3.23 ========== ======== ======== ======== ======== ============= Earnings required for preferred dividends: Preferred stock dividends 3,850 3,721 3,715 3,745 3,833 3,848 Adjustment to pre-tax basis 2,425 2,273 1,985 2,122 2,185 2,490 ---------- -------- -------- -------- -------- ------------- 6,275 5,994 5,700 5,867 6,018 6,338 Fixed charges plus preferred stock dividend requirements 39,999 43,748 42,489 45,906 48,753 45,905 ========== ======== ======== ======== ======== ============= Ratio of earnings to fixed charges plus preferred stock dividend requirements 3.72 3.71 3.15 3.60 2.61 2.79 ========== ======== ======== ======== ======== =============