EXHIBIT 12 ROCHESTER GAS AND ELECTRIC CORPORATION COMPUTATION OF SEC RATIO OF EARNINGS TO FIXED CHARGES (Thousand of Dollars) Twelve Months Ended March 31, Year Ended December 31, ------------------------------------------------------ 2002 2001 2000 1999 1998 1997 ---- ---- ---- ---- ---- ---- EARNINGS - -------- Net Income - Continuing Operations $82,336 $107,551 $95,529 $94,488 $94,138 $95,360 Add: Income Taxes (net), Continuing Operations 40,034 53,623 59,672 63,309 61,901 61,575 ------ ------- ------ ------ ------ ------ Pretax Income 122,370 161,174 155,201 157,797 156,039 156,935 Fixed Charges 69,004 70,170 69,453 63,321 52,474 56,903 ------- ------- ------- ------- ------- ------- Earnings (as defined) $191,374 $231,344 $224,654 $221,118 $208,513 $213,838 ======= ======= ======= ======= ======= ======= FIXED CHARGES - ------------- Interest Charges on Long Term Debt $59,179 $58,953 $56,673 $53,067 $43,306 $44,615 DOE Liability * 2,927 3,978 5,548 4,177 4,305 4,204 Amortization of Debt Premium, Discount and Expense 2,211 2,132 1,647 1,723 1,536 1,772 Other Interest 2,567 2,847 3,921 2,824 1,852 4,904 Rentals ** 2,120 2,260 1,664 1,530 1,475 1,408 ------ ------ ------ ------ ------ ------ Total Fixed Charges $69,004 $70,170 $69,453 $63,321 $52,474 $56,903 ====== ====== ====== ====== ====== ====== RATIO OF EARNINGS TO FIXED CHARGES (TIMES) *** 2.77 3.30 3.23 3.49 3.97 3.76 _________________________________________ * Long term liability to Federal Department of Energy for nuclear waste disposal. ** Rentals deemed representative of the interest factor included in rent expense. *** Including the effect of merger costs and accelerated amortization of the Nine Mile Two plant charged to current period earnings, the ratio of earnings to fixed charges for the twelve months ended March 31, 2002 would be 1.98x and for 2001 would be 2.46x.