Exhibit 12(a) SOUTH JERSEY GAS COMPANY Calculation of Ratio of Earnings To Fixed Charges (In Thousands) Fiscal Year Ended December 31, ------------------------------------------------------- 1999 1998 1997 1996 1995 ------------------------------------------------------- Net Income* $23,466 $17,910 $22,000 $19,389 $15,991 Income Taxes, Net 15,455 12,256 11,559 10,627 9,278 Fixed Charges** 20,949 19,235 18,103 19,574 19,545 Capitalized Interest (390) (167) (107) (114) (98) ------------------------------------------------------- Total Available for Coverage $59,480 $49,234 $51,555 $49,476 $44,716 ======================================================= Total Available 2.8x 2.6x 2.9x 2.5x 2.3x - --------------------- Fixed Charges <FN> * Net Income before Dividends on Preferred Securities and a Cumulative Effect of a Change in Accounting Principle. ** Fixed charges consist of interest charges (rentals are not material). </FN> Exhibit 12(b) SOUTH JERSEY GAS COMPANY Calculation of Ratio of Earnings To Fixed Charges Plus Preferred Security Dividend Requirements (In Thousands) Fiscal Year Ended December 31, ------------------------------------------------------- 1999 1998 1997 1996 1995 ------------------------------------------------------- Net Income $20,382 $14,822 $19,898 $19,215 $15,813 Income Taxes, Net 15,455 12,256 11,559 10,627 9,278 Fixed Charges* 20,949 19,235 18,103 19,574 19,545 Preferred Securities - Dividends 3,084 3,088 2,102 174 178 ------------------------------------------------------- Sub-Total 24,033 22,323 20,205 19,748 19,723 ------------------------------------------------------- Capitalized Interest (390) (167) (107) (114) (98) ------------------------------------------------------- Total Available for Coverage $59,480 $49,234 $51,555 $49,476 $44,716 ======================================================= Total Available 2.5x 2.2x 2.6x 2.5x 2.3x - ------------------------- Fixed Charges <FN> * Fixed charges consist of interest charges (rentals are not material). </FN>