<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the
financial statements filed as Exhibit 99 and is qualified in its entirety by
reference to such financial statements.

</LEGEND>
<CIK> 0000066904
<NAME> MISSISSIPPI POWER COMPANY
<MULTIPLIER> 1,000

                                                   
<PERIOD-TYPE>                                                            12-MOS
<FISCAL-YEAR-END>                                                   Dec-31-1999
<PERIOD-END>                                                        Dec-31-1999
<BOOK-VALUE>                                                           PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                             1,043,279
<OTHER-PROPERTY-AND-INVEST>                                               1,389
<TOTAL-CURRENT-ASSETS>                                                  156,785
<TOTAL-DEFERRED-CHARGES>                                                 49,683
<OTHER-ASSETS>                                                                0
<TOTAL-ASSETS>                                                        1,251,136
<COMMON>                                                                 37,691
<CAPITAL-SURPLUS-PAID-IN>                                               181,828
<RETAINED-EARNINGS>                                                     172,449
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                          391,968
<PREFERRED-MANDATORY>                                                    35,000
<PREFERRED>                                                              31,809
<LONG-TERM-DEBT-NET>                                                    182,238
<SHORT-TERM-NOTES>                                                       57,500
<LONG-TERM-NOTES-PAYABLE>                                               139,564
<COMMERCIAL-PAPER-OBLIGATIONS>                                                0
<LONG-TERM-DEBT-CURRENT-PORT>                                            30,020
<PREFERRED-STOCK-CURRENT>                                                     0
<CAPITAL-LEASE-OBLIGATIONS>                                                   0
<LEASES-CURRENT>                                                              0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                          383,037
<TOT-CAPITALIZATION-AND-LIAB>                                         1,251,136
<GROSS-OPERATING-REVENUE>                                               633,004
<INCOME-TAX-EXPENSE>                                                     34,117
<OTHER-OPERATING-EXPENSES>                                              513,248
<TOTAL-OPERATING-EXPENSES>                                              513,248
<OPERATING-INCOME-LOSS>                                                 119,756
<OTHER-INCOME-NET>                                                        1,948
<INCOME-BEFORE-INTEREST-EXPEN>                                           87,587
<TOTAL-INTEREST-EXPENSE>                                                 30,765
<NET-INCOME>                                                             56,822
<PREFERRED-STOCK-DIVIDENDS>                                               2,013
<EARNINGS-AVAILABLE-FOR-COMM>                                            54,809
<COMMON-STOCK-DIVIDENDS>                                                 56,100
<TOTAL-INTEREST-ON-BONDS>                                                     0
<CASH-FLOW-OPERATIONS>                                                   76,648
<EPS-BASIC>                                                                   0
<EPS-DILUTED>                                                                 0