<ARTICLE> 5
<LEGEND>
Monongahela Power Company
</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>                                             219
<SECURITIES>                                         0
<RECEIVABLES>                                  150,536
<ALLOWANCES>                                     4,243
<INVENTORY>                                     37,747
<CURRENT-ASSETS>                               201,732
<PP&E>                                       2,194,065
<DEPRECIATION>                                 979,687
<TOTAL-ASSETS>                               1,600,736
<CURRENT-LIABILITIES>                          190,635
<BONDS>                                        506,487
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                     74,000
<COMMON>                                       294,550
<OTHER-SE>                                     244,023
<TOTAL-LIABILITY-AND-EQUITY>                 1,600,736
<SALES>                                        176,734
<TOTAL-REVENUES>                               176,734
<CGS>                                          110,534
<TOTAL-COSTS>                                  141,491
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               9,801
<INCOME-PRETAX>                                 26,975
<INCOME-TAX>                                     9,700
<INCOME-CONTINUING>                             17,275
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    17,275
<EPS-BASIC>                                       0.00<F1>
<EPS-DILUTED>                                     0.00<F1>
<FN>
<F1>All common stock is owned by parent, no EPS required.
</FN>