<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.)

<CIK> 0001031296
<NAME> FIRSTENERGY CORP.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<EXCHANGE-RATE>                                      1
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    7,444,308
<OTHER-PROPERTY-AND-INVEST>                  2,709,219
<TOTAL-CURRENT-ASSETS>                       1,339,270
<TOTAL-DEFERRED-CHARGES>                     6,608,482
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                              18,101,279
<COMMON>                                        22,923
<CAPITAL-SURPLUS-PAID-IN>                    3,533,237
<RETAINED-EARNINGS>                          1,052,245
<TOTAL-COMMON-STOCKHOLDERS-EQ>               4,608,405
<PREFERRED-MANDATORY>                          244,356
<PREFERRED>                                    648,395
<LONG-TERM-DEBT-NET>                         5,965,925
<SHORT-TERM-NOTES>                             304,897
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                 159,970
<LONG-TERM-DEBT-CURRENT-PORT>                  555,385
<PREFERRED-STOCK-CURRENT>                       35,466
<CAPITAL-LEASE-OBLIGATIONS>                          0
<LEASES-CURRENT>                                52,831
<OTHER-ITEMS-CAPITAL-AND-LIAB>               5,525,649
<TOT-CAPITALIZATION-AND-LIAB>               18,101,279
<GROSS-OPERATING-REVENUE>                    3,310,034
<INCOME-TAX-EXPENSE>                           193,041
<OTHER-OPERATING-EXPENSES>                   2,572,098
<TOTAL-OPERATING-EXPENSES>                   2,765,139
<OPERATING-INCOME-LOSS>                        544,895
<OTHER-INCOME-NET>                                   0
<INCOME-BEFORE-INTEREST-EXPEN>                 544,895
<TOTAL-INTEREST-EXPENSE>                       269,373
<NET-INCOME>                                   275,522
<PREFERRED-STOCK-DIVIDENDS>                          0
<EARNINGS-AVAILABLE-FOR-COMM>                        0
<COMMON-STOCK-DIVIDENDS>                       168,518
<TOTAL-INTEREST-ON-BONDS>                      464,264
<CASH-FLOW-OPERATIONS>                         614,008
<EPS-BASIC>                                       1.23
<EPS-DILUTED>                                     1.23