EXHIBIT 12 AEP TEXAS NORTH COMPANY Computation of Ratios of Earnings to Fixed Charges (in thousands except ratio data) Year Ended December 31, 1998 1999 2000 2001 2002 Earnings: Income (Loss) Before Extraordinary Item $37,725 $31,867 $27,450 $12,310 $(13,677) Plus Federal Income Taxes 28,088 4,187 5,315 16,760 2,806 Plus State Income Taxes - - - 1,973 (1,363) Plus Provision for Deferred Income Taxes (6,626) 12,025 9,401 (11,891) (12,275) Plus Deferred Investment Tax Credits (1,321) (1,274) (1,271) (1,271) (1,271) Plus Fixed Charges (as below) 24,932 25,083 24,923 24,916 21,885 Total Earnings $82,798 $71,888 $65,818 $42,797 $ (3,895) Fixed Charges: Interest on Long-term Debt $20,352 $20,352 $18,017 $16,842 $ 17,174* Interest on Short-term Debt 4,580 4,731 6,503 7,563 4,051* Estimated Interest Element in Lease Rentals - - 403 511 660 Total Fixed Charges $24,932 $25,083 $24,923 $24,916 $ 21,885 Ratio of Earnings to Fixed Charges 3.32 2.86 2.64 1.71 (0.17) * Certain amounts have been reclassified between interest on short-term and long-term debt compared to periods prior to January 1, 2002. This reclassification had no affect on the ratio.