<TABLE> <S> <C>

<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the Form
10-Q for June 30, 1999, and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<CIK> 0000066904
<NAME> MISSISSIPPI POWER COMPANY
<MULTIPLIER> 1,000

<S>                                                   <C>
<PERIOD-TYPE>                                                             6-MOS
<FISCAL-YEAR-END>                                                   Dec-31-1999
<PERIOD-END>                                                        Jun-30-1999
<BOOK-VALUE>                                                           PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                             1,025,289
<OTHER-PROPERTY-AND-INVEST>                                               1,400
<TOTAL-CURRENT-ASSETS>                                                  139,576
<TOTAL-DEFERRED-CHARGES>                                                 55,951
<OTHER-ASSETS>                                                                0
<TOTAL-ASSETS>                                                        1,222,216
<COMMON>                                                                 37,691
<CAPITAL-SURPLUS-PAID-IN>                                               179,800
<RETAINED-EARNINGS>                                                     168,286
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                          385,777
<PREFERRED-MANDATORY>                                                    35,000
<PREFERRED>                                                              31,809
<LONG-TERM-DEBT-NET>                                                    172,801
<SHORT-TERM-NOTES>                                                       69,000
<LONG-TERM-NOTES-PAYABLE>                                               119,943
<COMMERCIAL-PAPER-OBLIGATIONS>                                                0
<LONG-TERM-DEBT-CURRENT-PORT>                                            50,020
<PREFERRED-STOCK-CURRENT>                                                     0
<CAPITAL-LEASE-OBLIGATIONS>                                                   0
<LEASES-CURRENT>                                                              0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                          357,866
<TOT-CAPITALIZATION-AND-LIAB>                                         1,222,216
<GROSS-OPERATING-REVENUE>                                               281,025
<INCOME-TAX-EXPENSE>                                                     13,374
<OTHER-OPERATING-EXPENSES>                                              231,614
<TOTAL-OPERATING-EXPENSES>                                              244,988
<OPERATING-INCOME-LOSS>                                                  36,037
<OTHER-INCOME-NET>                                                          739
<INCOME-BEFORE-INTEREST-EXPEN>                                           36,776
<TOTAL-INTEREST-EXPENSE>                                                 13,623
<NET-INCOME>                                                             23,153
<PREFERRED-STOCK-DIVIDENDS>                                               1,007
<EARNINGS-AVAILABLE-FOR-COMM>                                            22,146
<COMMON-STOCK-DIVIDENDS>                                                 27,600
<TOTAL-INTEREST-ON-BONDS>                                                     0
<CASH-FLOW-OPERATIONS>                                                    9,235
<EPS-BASIC>                                                                 0
<EPS-DILUTED>                                                                 0




</TABLE>