<ARTICLE>                                                              UT
<LEGEND>    THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
            FROM THE UNAUDITED FINANCIAL STATEMENTS OF WISCONSIN ENERGY
            CORPORATION FOR THE SIX MONTHS ENDED JUNE 30, 1998 AND IS
            QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
            STATEMENTS.
<MULTIPLIER>                                                        1,000
       
                                                           
<CURRENCY>                                                   U.S. DOLLARS
<FISCAL-YEAR-END>                                             DEC-31-1998
<PERIOD-START>                                                JAN-01-1998
<PERIOD-END>                                                  JUN-30-1998
<PERIOD-TYPE>                                                       6-MOS
<EXCHANGE-RATE>                                                         1
<BOOK-VALUE>                                                     PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                       3,198,156   
<OTHER-PROPERTY-AND-INVEST>                                       935,898   
<TOTAL-CURRENT-ASSETS>                                            546,806
<TOTAL-DEFERRED-CHARGES>                                                0
<OTHER-ASSETS>                                                    432,800
<TOTAL-ASSETS>                                                  5,113,660
<COMMON>                                                            1,153
<CAPITAL-SURPLUS-PAID-IN>                                         748,985
<RETAINED-EARNINGS>                                             1,123,788
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                  1,873,926
<PREFERRED-MANDATORY>                                                   0
<PREFERRED>                                                        30,450
<LONG-TERM-DEBT-NET>                                            1,265,667
<SHORT-TERM-NOTES>                                                155,574
<LONG-TERM-NOTES-PAYABLE>                                         302,290
<COMMERCIAL-PAPER-OBLIGATIONS>                                      4,977
<LONG-TERM-DEBT-CURRENT-PORT>                                      67,126
<PREFERRED-STOCK-CURRENT>                                               0
<CAPITAL-LEASE-OBLIGATIONS>                                       157,360
<LEASES-CURRENT>                                                   21,123
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                  1,235,167
<TOT-CAPITALIZATION-AND-LIAB>                                   5,113,660
<GROSS-OPERATING-REVENUE>                                         975,649
<INCOME-TAX-EXPENSE>                                               40,706
<OTHER-OPERATING-EXPENSES>                                        812,474
<TOTAL-OPERATING-EXPENSES>                                        853,180
<OPERATING-INCOME-LOSS>                                           122,469
<OTHER-INCOME-NET>                                                 14,397
<INCOME-BEFORE-INTEREST-EXPEN>                                    136,866
<TOTAL-INTEREST-EXPENSE>                                           58,363
<NET-INCOME>                                                       78,503
<PREFERRED-STOCK-DIVIDENDS>                                           601
<EARNINGS-AVAILABLE-FOR-COMM>                                      77,902
<COMMON-STOCK-DIVIDENDS>                                           87,471
<TOTAL-INTEREST-ON-BONDS>                                               0
<CASH-FLOW-OPERATIONS>                                            254,686
<EPS-PRIMARY>                                                         .69
<EPS-DILUTED>                                                         .69
<FN>
   See financial statements and footnotes in accompanying 10-Q.