Exhibit 12 Monongahela Power Company EXHIBIT 12 COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES For Year Ended December 31, 1997 (Dollar Amounts in Thousands) Monongahela Power Company Earnings: Net Income $ 80,529 Fixed charges (see below) 40,769 Income taxes 47,406 Total earnings $168,704 Fixed Charges: Interest on long-term debt $ 36,076 Other interest 2,654 Estimated interest component of rentals 2,039 Total fixed charges $ 40,769 Ratio of Earnings to Fixed Charges 4.14 Exhibit 12 The Potomac Edison Company EXHIBIT 12 COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES For Year Ended December 31, 1997 (Dollar Amounts in Thousands) The Potomac Edison Company Earnings: Net Income $ 95,755 Fixed charges (see below) 51,925 Income taxes 47,374 Total earnings $195,054 Fixed Charges: Interest on long-term debt $ 47,659 Other interest 2,164 Estimated interest component of rentals 2,102 Total fixed charges $ 51,925 Ratio of Earnings to Fixed Charges 3.76 Exhibit 12 West Penn Power Company EXHIBIT 12 COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES For Year Ended December 31, 1997 (Dollar Amounts in Thousands) West Penn Power Company Earnings: Net Income $134,665 Fixed charges (see below) 72,178 Income taxes 76,108 Total earnings $282,951 Fixed Charges: Interest on long-term debt $ 64,990 Other interest 4,639 Estimated interest component of rentals 2,549 Total fixed charges $ 72,178 Ratio of Earnings to Fixed Charges 3.92 Exhibit 12 Allegheny Generating Company EXHIBIT 12 COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES For Year Ended December 31, 1997 (Dollar Amounts in Thousands) Allegheny Generating Company Earnings: Net Income $ 32,268 Fixed charges (see below) 15,391 Income taxes 16,127 Total earnings $ 63,786 Fixed Charges: Interest on long-term debt $ 14,431 Other interest 960 Estimated interest component of rentals --- Total fixed charges $ 15,391 Ratio of Earnings to Fixed Charges 4.14