1 Exhibit 12 PIEDMONT NATURAL GAS COMPANY, INC. AND SUBSIDIARIES Computation of Ratio of Earnings to Fixed Charges For Fiscal Years Ended October 31, 1994 through 1998 and Twelve Months Ended January 31, 1999 (in thousands except ratio amounts) January 31, 1999 1998 1997 1996 1995 1994 ---- ---- ---- ---- ---- ---- Earnings: Net income from continuing operations $ 59,628 $ 60,313 $ 54,074 $ 48,562 $ 40,310 $ 35,506 Income taxes 38,393 38,807 34,650 30,928 25,442 21,407 Fixed charges 37,883 38,415 39,263 37,009 35,651 29,736 --------- --------- --------- --------- --------- -------- Total Adjusted Earnings $ 135,904 $ 137,535 $ 127,987 $ 116,499 $ 101,403 $ 86,649 ========= ========= ========= ========= ========= ======== Fixed Charges: Interest $ 36,423 $ 36,453 $ 36,949 $ 34,511 $ 33,224 $ 27,671 Amortization of debt expense 304 304 346 345 336 334 One-third of rental expense 1,156 1,658 1,968 2,153 2,091 1,731 --------- --------- --------- --------- --------- -------- Total Fixed Charges $ 37,883 $ 38,415 $ 39,263 $ 37,009 $ 35,651 $ 29,736 ========= ========= ========= ========= ========= ======== Ratio of Earnings to Fixed Charges 3.59 3.58 3.26 3.15 2.84 2.91 ========= ========= ========= ========= ========= ========