<ARTICLE> 5
<LEGEND>
Allegheny Energy, Inc. Consolidated
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             APR-01-2000
<PERIOD-END>                               JUN-30-2000
<EXCHANGE-RATE>                                      1
<CASH>                                           7,754
<SECURITIES>                                     2,486
<RECEIVABLES>                                  411,787
<ALLOWANCES>                                    29,854
<INVENTORY>                                    159,932
<CURRENT-ASSETS>                               695,670
<PP&E>                                       9,007,373
<DEPRECIATION>                               3,722,567
<TOTAL-ASSETS>                               6,833,319
<CURRENT-LIABILITIES>                        1,264,843
<BONDS>                                      2,315,098
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     74,000
<COMMON>                                       153,045
<OTHER-SE>                                   1,534,651<F1>
<TOTAL-LIABILITY-AND-EQUITY>                 6,833,319
<SALES>                                        865,323
<TOTAL-REVENUES>                               865,323
<CGS>                                          590,854
<TOTAL-COSTS>                                  704,397
<OTHER-EXPENSES>                                 1,260
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              52,522
<INCOME-PRETAX>                                113,440
<INCOME-TAX>                                    41,984
<INCOME-CONTINUING>                             71,456
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    71,456
<EPS-BASIC>                                       0.65
<EPS-DILUTED>                                     0.65
<FN>
<F1>Includes $398,407 for treasury stock (at cost).
</FN>