Exhibit 12 THE LACLEDE GROUP, INC. AND SUBSIDIARY COMPANIES SCHEDULE OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES ------------------------------------------------------------- Fiscal Year Ended September 30, ------------------------------- 2004 2003 2002 2001 2000 ---- ---- ---- ---- ---- (Thousands of Dollars) Income before interest charges and income taxes $84,142 $80,185 $60,440 $73,742 $64,078 Add: One third of applicable rentals charged to operating expense (which approximates the interest factor) 2,333 2,873 2,662 313 310 ------------------------------------------------------------------------- Total Earnings $86,475 $83,058 $63,102 $74,055 $64,388 ========================================================================= Interest on long-term debt $22,010 $20,169 $20,820 $18,372 $15,164 Other Interest 6,750 6,717 4,989 10,067 8,844 Add: One third of applicable rentals charged to operating expense (which approximates the interest factor) 2,333 2,873 2,662 313 310 ------------------------------------------------------------------------- Total Fixed Charges $31,093 $29,759 $28,471 $28,752 $24,318 ========================================================================= Ratio of Earnings to Fixed Charges 2.78 2.79 2.22 2.58 2.65 LACLEDE GAS COMPANY SCHEDULE OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES ------------------------------------------------------------- Fiscal Year Ended September 30, ------------------------------- 2004 2003 2002 2001 2000 ---- ---- ---- ---- ---- (Thousands of Dollars) Income before interest charges and income taxes $73,956 $76,274 $56,154 $73,742 $64,078 Add: One third of applicable rentals charged to operating expense (which approximates the interest factor) 538 457 315 313 310 ------------------------------------------------------------------------- Total Earnings $74,494 $76,731 $56,469 $74,055 $64,388 ========================================================================= Interest on long-term debt $22,010 $20,169 $20,820 $18,372 $15,164 Other Interest 3,192 3,752 4,285 10,067 8,844 Add: One third of applicable rentals charged to operating expense (which approximates the interest factor) 538 457 315 313 310 ------------------------------------------------------------------------- Total Fixed Charges $25,740 $24,378 $25,420 $28,752 $24,318 ========================================================================= Ratio of Earnings to Fixed Charges 2.89 3.15 2.22 2.58 2.65