1 EXHIBIT 12A RELIANT ENERGY, INCORPORATED AND SUBSIDIARIES COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (THOUSANDS OF DOLLARS) NINE TWELVE MONTHS ENDED MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, ----------------- ----------------- 1999 1999 ----------------- ----------------- Fixed Charges as Defined: (1) Interest on Long-Term Debt........................................ $ 307,965 $ 413,519 (2) Other Interest.................................................... 60,794 89,604 (3) Capitalized Interest.............................................. 12,227 14,943 (4) Distribution on Trust Securities.................................. 38,433 45,674 (5) Interest Component of Rentals Charged to Operating Expense........ 8,237 11,309 ----------------- ----------------- (6) Total Fixed Charges............................................... $ 427,656 $ 575,049 ================= ================= Earnings as Defined: (7) Income from Continuing Operations................................. $ 1,554,865 $ 1,150,305 (8) Income Taxes for Continuing Operations............................ 872,304 687,654 (9) Fixed Charges (line 6)............................................ 427,656 575,049 (10) Capitalized Interest.............................................. (12,227) (14,943) ----------------- ----------------- (11) Income from Continuing Operations Before Income Taxes and Fixed Charges........................................................... $ 2,842,598 $ 2,398,065 ================= ================= Ratio of Earnings to Fixed Charges (line 11 divided by line 6)............. 6.65 4.17 Preferred Dividends Requirements: (12) Preferred Stock Dividends......................................... $ 292 $ 390 (13) Less Tax Deduction for Preferred Dividends........................ 27 54 ----------------- ----------------- (14) Total............................................................. $ 265 $ 336 ================= ================= (15) Ratio of Pre-Tax Income from Continuing Operations to Net Income (line 7 plus line 8 divided by line 7)............................ 1.56 1.60 ----------------- ----------------- (16) Line 14 times line 15............................................. $ 413 $ 538 (17) Add Back Tax Deduction (line 13).................................. 27 54 ----------------- ----------------- (18) Preferred Dividends Factor........................................ $ 440 $ 592 ================= ================= (19) Total Fixed Charges (line 6)...................................... $ 427,656 $ 575,049 (20) Preferred Dividends Factor (line 18)............................. 440 592 ----------------- ----------------- (21) Total............................................................. $ 428,096 $ 575,641 ================= ================= Ratios of Earnings to Fixed Charges and Preferred Dividends (line 11 divided by line 21)....................................................... 6.64 4.17 ================= =================