<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
Allegheny Generating Company
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> APR-01-2000
<PERIOD-END> JUN-30-2000
<EXCHANGE-RATE> 1
<CASH> 15
<SECURITIES> 0
<RECEIVABLES> 2,165
<ALLOWANCES> 0
<INVENTORY> 2,069
<CURRENT-ASSETS> 9,309
<PP&E> 829,056
<DEPRECIATION> 235,662
<TOTAL-ASSETS> 616,184
<CURRENT-LIABILITIES> 67,299
<BONDS> 148,988
0
0
<COMMON> 1
<OTHER-SE> 149,361
<TOTAL-LIABILITY-AND-EQUITY> 616,184
<SALES> 17,359
<TOTAL-REVENUES> 17,359
<CGS> 958
<TOTAL-COSTS> 6,281
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 3,349
<INCOME-PRETAX> 7,732
<INCOME-TAX> 2,139
<INCOME-CONTINUING> 5,593
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 5,593
<EPS-BASIC> 0.00<F1>
<EPS-DILUTED> 0.00<F1>
<FN>
<F1>All common stock is owned by parent, no EPS required.
</FN>
</TABLE>