EXHIBIT (12) Computation of Ratios of Earnings to Fixed Charges and Earnings to Combined Fixed Charges and Preferred Stock Dividend Requirements Year ended December 31, 2000 2000 1999 1998 1997 1996 Income before provision for income taxes And fixed charges $ 63,197,851 $ 60,689,149 $ 63,261,581 $ 54,880,632 $ 49,713,981 (Note A) Fixed charges: Interest on first mortgage bonds $ 17,414,513 $ 18,528,871 $ 17,012,160 $ 15,704,380 $ 14,014,643 Amortization of debt discount and Expense less premium 1,042,217 873,863 861,673 888,662 866,921 Interest on 1,247,690 1,673,077 659,741 1,143,254 675,890 short-term debt Interest on 7,899,171 929,150 1,500 - 3,000 notes payable Other interest 437,621 363,632 345,590 336,642 276,880 Rental expense representative of an Interest factor 39,485 150,417 157,579 164,715 127,440 (Note B) Total fixed charges $ 28,080,697 $ 22,519,010 $ 19,038,243 $ 18,237,653 $ 15,964,774 Preferred stock dividend requirements: Preferred stock dividend requirements Not deductible for tax purposes $ 0 $ 1,600,210 $ 2,334,444 $ 2,338,304 $ 2,338,304 Ratio of income before provision for Income taxes to net income 1.487 1.722 1.561 1.540 1.531 Nondeductible dividend 0 2,755,562 3,644,067 3,600,988 3,579,943 requirements Deductible dividends 0 0 78,036 78,036 78,036 Total preferred stock Dividend requirements $ 0 $ 2,755,562 $ 3,722,103 $ 3,679,024 $ 3,657,979 Total combined fixed charges and Preferred stock dividend requirements $ 28,080,697 $ 25,274,572 $ 22,760,346 $ 21,916,677 $ 19,622,753 Ratio of earnings 2.25 2.70 3.32 3.01 3.11 to fixed charges Ratio of earnings to combined fixed charges And preferred stock 2.25 2.40 2.78 2.50 2.53 dividend requirements NOTE A: For the purpose of determining earnings in the calculation of the ratio, net income has been increased by the provision for income taxes, non-operating income taxes and by the sum of fixed charges as shown above. NOTE B: One-third of rental expense (which approximates the interest factor).