Exhibit 12 THE PEOPLES GAS LIGHT AND COKE COMPANY AND SUBSIDIARY COMPANIES --------------------------------------------------------------- STATEMENT RE: COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES ---------------------------------------------------------------- (Dollars in Thousands) Fiscal years ended September 30, - ---------------------------------------------------------------------------------------------------- 1994 1993 1992 1991 1990 - ---------------------------------------------------------------------------------------------------- Net Income Before Preferred Stock Dividends $ 63,825 $ 64,355 $ 58,946 $ 61,763 $ 60,156 Add - Income Taxes 30,429 32,951 29,051 31,698 32,173 Fixed Charges (see below) 41,352 37,931 40,347 41,908 40,624 - ---------------------------------------------------------------------------------------------------- Earnings $135,606 $135,237 $128,344 $135,369 $132,953 - ---------------------------------------------------------------------------------------------------- Fixed Charges: Interest on Long-Term Debt $ 38,029 $ 34,907 $ 36,026 $ 36,863 $ 34,582 Interest on Interim Loans 896 596 59 77 143 Other Interest 1,738 1,812 3,595 4,252 5,268 Amortization of Debt Discount and Expense 689 616 667 716 631 - ---------------------------------------------------------------------------------------------------- Total Fixed Charges $ 41,352 $ 37,931 $ 40,347 $ 41,908 $ 40,624 - ---------------------------------------------------------------------------------------------------- Ratio of Earnings to Fixed Charges 3.28 3.57 3.18 3.23 3.27 - ----------------------------------------------------------------------------------------------------