<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
Monongahela Power Company
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JUL-01-2000
<PERIOD-END> SEP-30-2000
<EXCHANGE-RATE> 1
<CASH> 4,185
<SECURITIES> 0
<RECEIVABLES> 134,087
<ALLOWANCES> (5,079)
<INVENTORY> 33,780
<CURRENT-ASSETS> 229,707
<PP&E> 2,504,306
<DEPRECIATION> 1,136,674
<TOTAL-ASSETS> 1,965,690
<CURRENT-LIABILITIES> 277,661
<BONDS> 606,668
0
74,000
<COMMON> 294,550
<OTHER-SE> 412,330
<TOTAL-LIABILITY-AND-EQUITY> 1,965,690
<SALES> 194,942
<TOTAL-REVENUES> 194,942
<CGS> 116,592
<TOTAL-COSTS> 146,486
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 10,620
<INCOME-PRETAX> 39,213
<INCOME-TAX> 10,823
<INCOME-CONTINUING> 28,390
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 28,390
<EPS-BASIC> 0.00<F1>
<EPS-DILUTED> 0.00<F1>
<FN>
<F1>*All common stock is owned by parent, no EPS required.
</FN>
</TABLE>