<TABLE> <S> <C>
<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
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<EXCHANGE-RATE> 1
<BOOK-VALUE> PER-BOOK
<TOTAL-NET-UTILITY-PLANT> 7,499,556
<OTHER-PROPERTY-AND-INVEST> 2,733,288
<TOTAL-CURRENT-ASSETS> 1,315,710
<TOTAL-DEFERRED-CHARGES> 6,419,025
<OTHER-ASSETS> 0
<TOTAL-ASSETS> 17,967,579
<COMMON> 22,745
<CAPITAL-SURPLUS-PAID-IN> 3,493,978
<RETAINED-EARNINGS> 1,167,041
<TOTAL-COMMON-STOCKHOLDERS-EQ> 4,683,764
234,610
648,395
<LONG-TERM-DEBT-NET> 5,725,011
<SHORT-TERM-NOTES> 503,592
<LONG-TERM-NOTES-PAYABLE> 0
<COMMERCIAL-PAPER-OBLIGATIONS> 159,957
<LONG-TERM-DEBT-CURRENT-PORT> 364,275
35,466
<CAPITAL-LEASE-OBLIGATIONS> 0
<LEASES-CURRENT> 47,056
<OTHER-ITEMS-CAPITAL-AND-LIAB> 5,565,453
<TOT-CAPITALIZATION-AND-LIAB> 17,967,579
<GROSS-OPERATING-REVENUE> 5,201,679
<INCOME-TAX-EXPENSE> 322,241
<OTHER-OPERATING-EXPENSES> 4,005,170
<TOTAL-OPERATING-EXPENSES> 4,327,411
<OPERATING-INCOME-LOSS> 874,268
<OTHER-INCOME-NET> 0
<INCOME-BEFORE-INTEREST-EXPEN> 874,268
<TOTAL-INTEREST-EXPENSE> 400,559
<NET-INCOME> 473,709
0
<EARNINGS-AVAILABLE-FOR-COMM> 0
<COMMON-STOCK-DIVIDENDS> 251,909
<TOTAL-INTEREST-ON-BONDS> 437,343
<CASH-FLOW-OPERATIONS> 1,107,936
<EPS-BASIC> 2.12
<EPS-DILUTED> 2.12
</TABLE>
