<Page> EXHIBIT 12 CON EDISON COMPANY OF NEW YORK, INC. RATIO TO EARNINGS TO FIXED CHARGES (Millions of Dollars) <Table> <Caption> FOR THE THREE FOR THE TWELVE MONTHS ENDED MONTHS ENDED FOR THE TWELVE MONTHS ENDED DECEMBER 31, MARCH 31, 2003 MARCH 31, 2003 2002 2001 2000 -------------- -------------- ----------- ----------- ----------- EARNINGS Net Income for Common Stock $ 138 $ 593 $ 605 $ 649 $ 570 Preferred Stock Dividend 3 12 13 14 14 Cumulative Effect of Changes in Accounting Principles - - - - - (Income) or Loss from Equity Investees - 1 1 - - Minority Interest Loss - - - - - Income Tax 87 346 342 427 290 -------------- -------------- ----------- ----------- ----------- Pre-Tax Income from Continuing Operations $ 228 $ 952 $ 961 $ 1,090 $ 874 Add: Fixed Charges* 99 413 408 410 392 Add: Amortization of Capitalized Interest - - - - - Add: Distributed Income of Equity Investees - - - - - Subtract: Interest Capitalized - - - - - Subtract: Preferred Stock Dividend Requirement - - - - - -------------- -------------- ----------- ----------- ----------- EARNINGS $ 327 $ 1,365 $ 1,369 $ 1,500 $ 1,266 ============== ============== =========== =========== =========== * FIXED CHARGES Interest on Long-term Debt 85 336 $ 333 $ 347 $ 319 Amortization of Debt Discount, Premium and Expense 3 13 12 13 13 Interest Capitalized - - - Other Interest 7 50 51 32 43 Interest Component of Rentals 4 14 12 18 17 Preferred Stock Dividend Requirement - - - - - -------------- -------------- ----------- ----------- ----------- FIXED CHARGES $ 99 $ 413 $ 408 $ 410 $ 392 ============== ============== =========== =========== =========== Ratio of Earnings to Fixed Charges 3.3 3.3 3.4 3.7 3.2 ============== ============== =========== =========== =========== <Caption> FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1999 1998 ---------- ----------- EARNINGS Net Income for Common Stock $ 698 $ 728 Preferred Stock Dividend 14 17 Cumulative Effect of Changes in Accounting Principles - - (Income) or Loss from Equity Investees - 1 Minority Interest Loss - - Income Tax 366 414 ---------- ----------- Pre-Tax Income from Continuing Operations $ 1,078 1,160 Add: Fixed Charges* 340 346 Add: Amortization of Capitalized Interest - - Add: Distributed Income of Equity Investees - - Subtract: Interest Capitalized - - Subtract: Preferred Stock Dividend Requirement - - ---------- ----------- EARNINGS $ 1,418 1,506 ========== =========== * FIXED CHARGES Interest on Long-term Debt $ 292 $ 295 Amortization of Debt Discount, Premium and Expense 13 14 Interest Capitalized - - Other Interest 17 18 Interest Component of Rentals 18 19 Preferred Stock Dividend Requirement - - ---------- ----------- FIXED CHARGES $ 340 $ 346 ========== =========== Ratio of Earnings to Fixed Charges 4.2 4.4 ========== =========== </Table>