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                                                             EXHIBIT 3.6        

                                                             CONFORMED COPY


                           CERTIFICATE OF DESIGNATION

                                       of

                         SERIES A JUNIOR PARTICIPATING
                                PREFERRED STOCK

                                       of

                               DTE ENERGY COMPANY

                      (Pursuant to Section 450.1302 of the
               Business Corporation Act of the State of Michigan)

     DTE Energy Company, a Michigan corporation (the "Company"), DOES HEREBY
CERTIFY:

     That, pursuant to authority vested in the Board of Directors of the
Company by its Amended and Restated Articles of Incorporation, and pursuant to
the provisions of Section 450.1302 of the Michigan Business Corporation Act,
the Board of Directors of the Company has adopted the following resolution
providing for the issuance of a series of Preferred Stock:

     RESOLVED, that pursuant to the authority expressly granted to and vested
in the Board of Directors of the Company (hereinafter called the "Board of
Directors" or the "Board") by the Amended and Restated Articles of
Incorporation of the Company, a series of Preferred Stock, without par value
(the "Preferred Stock"), of the Company be, and it hereby is, created, and that
the designation and amount thereof and the powers, designations, preferences
and relative, participating, optional and other special rights of the shares of
such series, and the qualifications, limitations or restrictions thereof are as
follows:

                           I.  Designation and Amount

     The shares of such series will be designated as Series A Junior
Participating Preferred Stock (the "Series A Preferred") and the number of
shares constituting the Series A Preferred is 1,500,000.

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                        II.  Dividends and Distributions

     (a) Subject to the rights of the holders of any shares of any series of
Preferred Stock ranking prior to the Series A Preferred with respect to
dividends, the holders of shares of Series A Preferred, in preference to the
holders of Common Stock, without par value (the "Common Stock"), of the
Company, and of any other junior stock, will be entitled to receive, when, as
and if declared by the Board out of funds legally available for the purpose,
dividends payable in cash (except as otherwise provided below) on such dates as
are from time to time established for the payment of dividends on the Common
Stock (each such date being referred to herein as a "Dividend Payment Date"),
commencing on the first Dividend Payment Date after the first issuance of a
share or fraction of a share of Series A Preferred (the "First Dividend Payment
Date"), in an amount per share (rounded to the nearest cent) equal to the
greater of (i) $1.00 or (ii) subject to the provision for adjustment
hereinafter set forth, one hundred times the aggregate per share amount of all
cash dividends, and one hundred times the aggregate per share amount (payable
in kind) of all non-cash dividends, other than a dividend payable in shares of
Common Stock or a subdivision of the outstanding shares of Common Stock (by
reclassification or otherwise), declared on the Common Stock since the
immediately preceding Dividend Payment Date or, with respect to the First
Dividend Payment Date, since the first issuance of any share or fraction of a
share of Series A Preferred.  In the event that the Company at any time (i)
declares a dividend on the outstanding shares of Common Stock payable in shares
of Common Stock, (ii) subdivides the outstanding shares of Common Stock, (iii)
combines the outstanding shares of Common Stock into a smaller number of
shares, or (iv) issues any shares of its capital stock in a reclassification of
the outstanding shares of Common Stock (including any such reclassification in
connection with a consolidation or merger in which the Company is the
continuing or surviving corporation), then, in each such case and regardless of
whether any shares of Series A Preferred are then issued or outstanding, the
amount to which holders of shares of Series A Preferred would otherwise be
entitled immediately prior to such event under clause (ii) of the preceding
sentence will be adjusted by multiplying such amount by a fraction, the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

     (b) The Company will declare a dividend on the Series A Preferred as
provided in the immediately preceding paragraph immediately after it declares a
dividend on the Common Stock (other than a dividend payable in shares of Common
Stock).  Each such dividend on the Series A Preferred will be payable
immediately prior to the time at which the related dividend on the Common Stock
is payable.

     (c) Dividends will accrue on outstanding shares of Series A Preferred from
the Dividend Payment Date next preceding the date of issue of such shares,
unless (i) the date of issue of such shares is prior to the record date for the
First Dividend Payment Date, in which case dividends on such shares will accrue
from the date of

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the first issuance of a share of Series A Preferred or (ii) the date of issue
is a Dividend Payment Date or is a date after the record date for the
determination of holders of shares of Series A Preferred entitled to receive a
dividend and before such Dividend Payment Date, in either of which events such
dividends will accrue from such Dividend Payment Date.  Accrued but unpaid
dividends will cumulate from the applicable Dividend Payment Date but will not
bear interest.  Dividends paid on the shares of Series A Preferred in an amount
less than the total amount of such dividends at the time accrued and payable on
such shares will be allocated pro rata on a share-by-share basis among all such
shares at the time outstanding.  The Board may fix a record date for the
determination of holders of shares of Series A Preferred entitled to receive
payment of a dividend or distribution declared thereon, which record date will
be not more than 60 calendar days prior to the date fixed for the payment
thereof.

                              III.  Voting Rights

     The holders of shares of Series A Preferred will have the following voting
rights:

           (a) Subject to the provision for adjustment hereinafter set forth,
      each share of Series A Preferred will entitle the holder thereof to one
      vote on all matters submitted to a vote of the stockholders of the
      Company.

           (b) Except as otherwise provided herein, in any other Preferred
      Stock Designation creating a series of Preferred Stock or any similar
      stock, or by law, the holders of shares of Series A Preferred and the
      holders of shares of Common Stock and any other capital stock of the
      Company having general voting rights will vote together as one class on
      all matters submitted to a vote of stockholders of the Company.

           (c) Except as set forth in the Amended and Restated Articles of
      Incorporation or herein, or as otherwise provided by law, holders of
      shares of Series A Preferred will have no voting rights.

                           IV.  Certain Restrictions

     (a) Whenever dividends or other dividends or distributions payable on the
Series A Preferred are in arrears, thereafter and until all accrued and unpaid
dividends and distributions, whether or not declared, on shares of Series A
Preferred outstanding have been paid in full, the Company will not:

           (i) Declare or pay dividends, or make any other distributions, on
      any shares of stock ranking junior (either as to dividends or upon
      liquidation, dissolution or winding up) to the shares of Series A
      Preferred;

           (ii) Declare or pay dividends, or make any other distributions, on
      any shares of stock ranking on a parity (either as to dividends or upon
      liquidation,

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      dissolution, or winding up) with the shares of Series A Preferred, except
      dividends paid ratably on the shares of Series A Preferred and all such
      parity stock on which dividends are payable or in arrears in proportion
      to the total amounts to which the holders of all such shares are then
      entitled;

           (iii) Redeem, purchase or otherwise acquire for consideration shares
      of any stock ranking junior (either as to dividends or upon liquidation,
      dissolution or winding up) to the shares of Series A Preferred; provided,
      however, that the Company may at any time redeem, purchase or otherwise
      acquire shares of any such junior stock in exchange for shares of any
      stock of the Company ranking junior (either as to dividends or upon
      dissolution, liquidation or winding up) to the shares of Series A
      Preferred; or

           (iv) Redeem, purchase or otherwise acquire for consideration any
      shares of Series A Preferred, or any shares of stock ranking on a parity
      with the shares of Series A Preferred, except in accordance with a
      purchase offer made in writing or by publication (as determined by the
      Board) to all holders of such shares upon such terms as the Board, after
      consideration of the respective annual dividend rates and other relative
      rights and preferences of the respective series and classes, may
      determine in good faith will result in fair and equitable treatment among
      the respective series or classes.

     (b) The Company will not permit any majority-owned subsidiary of the
Company to purchase or otherwise acquire for consideration any shares of stock
of the Company unless the Company could, under paragraph (a) of this Article
IV, purchase or otherwise acquire such shares at such time and in such manner.

                             V.  Reacquired Shares

     Any shares of Series A Preferred purchased or otherwise acquired by the
Company in any manner whatsoever will be retired and canceled promptly after
the acquisition thereof.  All such shares will upon their cancellation become
authorized but unissued shares of Preferred Stock and may be reissued as part
of a new series of Preferred Stock subject to the conditions and restrictions
on issuance set forth herein, in the Amended and Restated Articles of
Incorporation of the Company, or in any other Preferred Stock Designation
creating a series of Preferred Stock or any similar stock or as otherwise
required by law.

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                  VI.  Liquidation, Dissolution or Winding Up

     Upon any liquidation, dissolution or winding up of the Company, no
distribution will be made (a) to the holders of shares of stock ranking junior
(either as to dividends or upon liquidation, dissolution, or winding up) to the
shares of Series A Preferred unless, prior thereto, the holders of shares of
Series A Preferred have received $100 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not
declared, to the date of such payment; provided, however, that the holders of
shares of Series A Preferred will be entitled to receive an aggregate amount
per share, subject to the provision for adjustment hereinafter set forth, equal
to one hundred times the aggregate amount to be distributed per share to
holders of shares of Common Stock or (b) to the holders of shares of stock
ranking on a parity (either as to dividends or upon liquidation, dissolution,
or winding up) with the shares of Series A Preferred, except distributions made
ratably on the shares of Series A Preferred and all such parity stock in
proportion to the total amounts to which the holders of all such shares are
entitled upon such liquidation, dissolution, or winding up.  In the event the
Company at any time (i) declares a dividend on the outstanding shares of Common
Stock payable in shares of Common Stock, (ii) subdivides the outstanding shares
of Common Stock, (iii) combines the outstanding shares of Common Stock into a
smaller number of shares, or (iv) issues any shares of its capital stock in a
reclassification of the outstanding shares of Common Stock (including any such
reclassification in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation), then, in each such case
and regardless of whether any shares of Series A Preferred are then issued or
outstanding, the aggregate amount to which each holder of shares of Series A
Preferred would otherwise be entitled immediately prior to such event under the
proviso in clause (a) of the preceding sentence will be adjusted by multiplying
such amount by a fraction, the numerator of which is the number of shares of
Common Stock outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

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                       VII.  Consolidation, Merger, Etc.

     In the event that the Company enters into any consolidation, merger,
combination or other transaction in which the shares of Common Stock are
exchanged for or changed into other stock or securities, cash and/or any other
property, then, in each such case, each share of Series A Preferred will at the
same time be similarly exchanged for or changed into an amount per share,
subject to the provision for adjustment hereinafter set forth, equal to one
hundred times the aggregate amount of stock, securities, cash and/or any other
property (payable in kind), as the case may be, into which or for which each
share of Common Stock is changed or exchanged.  In the event the Company at any
time (a) declares a dividend on the outstanding shares of Common Stock payable
in shares of Common Stock, (b) subdivides the outstanding shares of Common
Stock, (c) combines the outstanding shares of Common Stock in a smaller number
of shares, or (d) issues any shares of its capital stock in a reclassification
of the outstanding shares of Common Stock (including any such reclassification
in connection with a consolidation or merger in which the Company is the
continuing or surviving corporation), then, in each such case and regardless of
whether any shares of Series A Preferred are then issued or outstanding, the
amount set forth in the preceding sentence with respect to the exchange or
change of shares of Series A Preferred will be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

                               VIII.  Redemption

     The shares of Series A Preferred are not redeemable.

                                   IX.  Rank

     The Series A Preferred rank, with respect to the payment of dividends and
the distribution of assets, junior to all other series of the Company's
Preferred Stock.

                                 X.  Amendment

     Notwithstanding anything contained in the Amended and Restated Articles of
Incorporation of the Company to the contrary and in addition to any other vote
required by applicable law, the Amended and Restated Articles of Incorporation
of the Company may not be amended in any manner that would materially alter or
change the powers, preferences or special rights of the Series A Preferred so
as to affect them adversely without the affirmative vote of the holders of at
least 80% of the outstanding shares of Series A Preferred, voting together as a
single series.


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     IN WITNESS WHEREOF, this Certificate of Designation is executed on behalf
of the Company by its Chairman and Chief Executive Officer and attested by its
Vice President and Secretary this 23rd day of September, 1997.



                                             /s/ John E. Lobbia
                                             ----------------------------       
                                             John E. Lobbia
                                             Chairman and Chief Executive
                                             Officer


Attest:


/s/ Susan M. Beale
----------------------------
Susan M. Beale
Vice President and Secretary

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