<ARTICLE> UT
<LEGEND> This schedule contains summary financial information extracted from the
Consolidated Balance Sheet and Statement of Consolidated Capitalization as of
December 31, 1998 and the related Statements of Consolidated Operations,
Retained Earnings (Deficit) and Cash Flows for the twelve months ended December
31, 1998 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<CIK> 0000022606
<NAME> Commonwealth Edison Company
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                        DEC-31-1998
<PERIOD-START>                           JAN-01-1998
<PERIOD-END>                             DEC-31-1998
<BOOK-VALUE>                             PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                 13,441,905
<OTHER-PROPERTY-AND-INVEST>                2,373,477
<TOTAL-CURRENT-ASSETS>                     4,954,807
<TOTAL-DEFERRED-CHARGES>                           0<F1>
<OTHER-ASSETS>                             4,663,380
<TOTAL-ASSETS>                            25,433,569
<COMMON>                                   2,677,952
<CAPITAL-SURPLUS-PAID-IN>                  2,208,042
<RETAINED-EARNINGS>                          176,643
<TOTAL-COMMON-STOCKHOLDERS-EQ>             5,055,837<F2>
<PREFERRED-MANDATORY>                         69,475
<PREFERRED>                                   74,488
<LONG-TERM-DEBT-NET>                       7,677,219<F3>
<SHORT-TERM-NOTES>                                 0<F1>
<LONG-TERM-NOTES-PAYABLE>                          0<F3>
<COMMERCIAL-PAPER-OBLIGATIONS>                     0<F1>
<LONG-TERM-DEBT-CURRENT-PORT>              1,497,706
<PREFERRED-STOCK-CURRENT>                    534,193
<CAPITAL-LEASE-OBLIGATIONS>                  333,653
<LEASES-CURRENT>                             194,969
<OTHER-ITEMS-CAPITAL-AND-LIAB>             9,996,029<F4>
<TOT-CAPITALIZATION-AND-LIAB>             25,433,569
<GROSS-OPERATING-REVENUE>                  7,135,880
<INCOME-TAX-EXPENSE>                         351,202<F5>
<OTHER-OPERATING-EXPENSES>                 5,769,967
<TOTAL-OPERATING-EXPENSES>                 6,125,634
<OPERATING-INCOME-LOSS>                    1,010,246
<OTHER-INCOME-NET>                            29,657<F5><F6>
<INCOME-BEFORE-INTEREST-EXPEN>             1,044,368
<TOTAL-INTEREST-EXPENSE>                     450,162
<NET-INCOME>                                 594,206
<PREFERRED-STOCK-DIVIDENDS>                   56,884
<EARNINGS-AVAILABLE-FOR-COMM>                537,322
<COMMON-STOCK-DIVIDENDS>                     342,776
<TOTAL-INTEREST-ON-BONDS>                          0<F7>
<CASH-FLOW-OPERATIONS>                     1,449,446
<EPS-PRIMARY>                                      0<F7>
<EPS-DILUTED>                                      0<F7>
<FN>
<F1> This item is not disclosed as a separate line item on the Consolidated 
     Balance Sheet.
<F2> Includes a deduction of $6,800 thousand for treasury stock.
<F3> $3,965,620 thousand of notes and transitional trust notes are included in 
     LONG-TERM-DEBT-NET.
<F4> Includes $350,000 thousand of Company-obligated mandatorily redeemable
     preferred securities of subsidiary trusts holding solely the Company's
     subordinated debt securities.
<F5> A tax benefit of $4,465 thousand related to nonoperating activities is 
     included in INCOME-TAX-EXPENSE.
<F6> Includes $29,710 thousand of provision for preferred securities dividends
     of subsidiary trusts holding solely the Company's subordinated debt
     securities.
<F7> This item is not disclosed as a separate line item on the Statement of 
     Consolidated Operations.
</FN>