<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the
related Form 10-Q financial statements for FirstEnergy Corp. and is
qualified in its entirety by reference to such financial statements.
(Amounts in 1,000's, except earnings per share.)
</LEGEND>
<CIK> 0001031296
<NAME> FIRSTENERGY CORP.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               MAR-31-2000
<EXCHANGE-RATE>                                      1
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    9,117,895
<OTHER-PROPERTY-AND-INVEST>                  2,668,357
<TOTAL-CURRENT-ASSETS>                       1,258,580
<TOTAL-DEFERRED-CHARGES>                     5,063,016
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                              18,107,848
<COMMON>                                        23,091
<CAPITAL-SURPLUS-PAID-IN>                    3,568,340
<RETAINED-EARNINGS>                          1,001,704
<TOTAL-COMMON-STOCKHOLDERS-EQ>               4,593,135
<PREFERRED-MANDATORY>                          256,246
<PREFERRED>                                    648,395
<LONG-TERM-DEBT-NET>                         6,056,213
<SHORT-TERM-NOTES>                             193,945
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                 159,882
<LONG-TERM-DEBT-CURRENT-PORT>                  572,739
<PREFERRED-STOCK-CURRENT>                       38,464
<CAPITAL-LEASE-OBLIGATIONS>                          0
<LEASES-CURRENT>                                46,314
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<TOT-CAPITALIZATION-AND-LIAB>               18,107,848
<GROSS-OPERATING-REVENUE>                    1,607,930
<INCOME-TAX-EXPENSE>                            97,899
<OTHER-OPERATING-EXPENSES>                   1,234,086
<TOTAL-OPERATING-EXPENSES>                   1,331,985
<OPERATING-INCOME-LOSS>                        275,945
<OTHER-INCOME-NET>                                   0
<INCOME-BEFORE-INTEREST-EXPEN>                 275,945
<TOTAL-INTEREST-EXPENSE>                       135,027
<NET-INCOME>                                   140,918
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                        0
<COMMON-STOCK-DIVIDENDS>                        84,455
<TOTAL-INTEREST-ON-BONDS>                      469,930
<CASH-FLOW-OPERATIONS>                         327,915
<EPS-BASIC>                                        .63
<EPS-DILUTED>                                      .63