<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM EDISON
MISSION HOLDINGS FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<NAME>  EDISON MISSION HOLDINGS CO.
<CIK>   0001099532
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                         125,204
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                     44,962
<CURRENT-ASSETS>                               192,595
<PP&E>                                       1,942,667
<DEPRECIATION>                                  25,280
<TOTAL-ASSETS>                               2,121,696
<CURRENT-LIABILITIES>                           60,263
<BONDS>                                        885,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                   1,036,921
<TOTAL-LIABILITY-AND-EQUITY>                 2,121,696
<SALES>                                              0
<TOTAL-REVENUES>                               245,788
<CGS>                                                0
<TOTAL-COSTS>                                  150,999
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              35,506
<INCOME-PRETAX>                                 60,117
<INCOME-TAX>                                    24,939
<INCOME-CONTINUING>                             35,178
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (2,667)
<CHANGES>                                            0
<NET-INCOME>                                    32,511
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0