<TABLE> <S> <C>

<ARTICLE> UT
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF INCOME, STATEMENT OF CASH FLOWS, BALANCE SHEET, AND STATEMENT OF
COMMON STOCKHOLDERS' EQUITY, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<CIK> 0000811156
<NAME> CMS ENERGY CORPORATION
<MULTIPLIER> 1,000,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   9-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1999             DEC-31-1999
<PERIOD-START>                             JAN-01-1999             JAN-01-1999             JAN-01-1999
<PERIOD-END>                               JUN-30-1999             SEP-30-1999             DEC-31-1999
<BOOK-VALUE>                                  PER-BOOK                PER-BOOK                PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                        3,909                   3,974                   4,004
<OTHER-PROPERTY-AND-INVEST>                      5,507                   5,648                   6,113
<TOTAL-CURRENT-ASSETS>                           1,694                   1,961                   1,817
<TOTAL-DEFERRED-CHARGES>                         3,037                   3,011                   3,528
<OTHER-ASSETS>                                       0                       0                       0
<TOTAL-ASSETS>                                  14,147                  14,594                  14,462
<COMMON>                                             1                       1                       1
<CAPITAL-SURPLUS-PAID-IN>                        2,643                   2,666                   2,749
<RETAINED-EARNINGS>                              (138)                   (140)                   (189)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                   2,390                   2,393                   2,456
<PREFERRED-MANDATORY>                              643                     944                   1,119
<PREFERRED>                                         44                      44                      44
<LONG-TERM-DEBT-NET>                             2,147                   2,086                   1,802
<SHORT-TERM-NOTES>                                 264                     317                     230
<LONG-TERM-NOTES-PAYABLE>                        4,932                   5,006                   5,185
<COMMERCIAL-PAPER-OBLIGATIONS>                       0                       0                       0
<LONG-TERM-DEBT-CURRENT-PORT>                      271                     273                     516
<PREFERRED-STOCK-CURRENT>                            0                       0                       0
<CAPITAL-LEASE-OBLIGATIONS>                         92                      89                      88
<LEASES-CURRENT>                                    35                      35                      36
<OTHER-ITEMS-CAPITAL-AND-LIAB>                   3,213                   3,273                   3,881
<TOT-CAPITALIZATION-AND-LIAB>                   14,147                  14,594                  15,462
<GROSS-OPERATING-REVENUE>                        2,869                   4,335                   6,103
<INCOME-TAX-EXPENSE>                                67                      92                      64
<OTHER-OPERATING-EXPENSES>                       2,392                   3,587                   5,191
<TOTAL-OPERATING-EXPENSES>                       2,459                   3,679                   5,255
<OPERATING-INCOME-LOSS>                            410                     656                     848
<OTHER-INCOME-NET>                                  13                       9                      10
<INCOME-BEFORE-INTEREST-EXPEN>                     423                     665                     858
<TOTAL-INTEREST-EXPENSE>                           228                     368                     519
<NET-INCOME>                                       195                     297                     339
<PREFERRED-STOCK-DIVIDENDS>                         22                      41                      62
<EARNINGS-AVAILABLE-FOR-COMM>                      173                     256                     277
<COMMON-STOCK-DIVIDENDS>                            77                     162                     163
<TOTAL-INTEREST-ON-BONDS>                            0                       0                      62
<CASH-FLOW-OPERATIONS>                             440                     440                     917
<EPS-BASIC>                                       1.50<F1>                2.29<F1>                2.18<F1>
<EPS-DILUTED>                                     1.48                    2.25                    2.17
<FN>
<F1>EPS for CMS Energy Common Stock  $2.18
EPS for Class G Common Stock     $4.21
</FN>


</TABLE>