SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                     -------

                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934





Date of Report (Date of earliest event reported)              March 24, 1999
                                                 -------------------------------



                           New Century Energies, Inc.
             (Exact Name of Registrant as Specified in its Charter)


         Delaware                        1-12927               84-1334327
(State or Other Jurisdiction           (Commission           (IRS Employer
      of Incorporation)                File Number)        Identification No.)


                   1225 Seventeenth Street, Denver, Colorado
                                     80202
              (Address of Principal Executive Offices) (Zip Code)


Registrant's telephone number, including area code          (303) 571-7511
                                                  ------------------------------


                                       N/A

          (Former Name or Former Address, if Changed Since Last Report)









Item 5.  Other Events.

     On March 25,  1999,  New Century  Energies,  Inc.,  a Delaware  corporation
("NCE"),  and Northern States Power Company,  a Minnesota  corporation  ("NSP"),
issued a joint press release  announcing that they had entered into an Agreement
and Plan of  Merger,  dated as of  March  24,  1999  (the  "Merger  Agreement"),
providing for a strategic  business  combination of NCE and NSP. Pursuant to the
Merger Agreement, NCE will be merged with and into NSP with NSP as the surviving
corporation  in the merger  (the  "Merger").  Subject to the terms of the Merger
Agreement,  each  share of NCE common  stock,  par value  $1.00 per share  ("NCE
Common  Stock"),  other than certain  shares to be cancelled,  together with any
associated  purchase  rights,  will be converted  into the right to receive 1.55
(the  "Conversion  Ratio") shares of NSP common stock, par value $2.50 per share
("NSP Common Stock").  Cash will be paid in lieu of any fractional shares of NSP
Common Stock which  holders of NCE Common  Stock would  otherwise  receive.  The
Merger is expected to be a tax free stock-for-stock exchange for shareholders of
both companies and to be accounted for as a pooling of interests.

     The Merger  Agreement and the joint press release  announcing the execution
of  the  Merger   Agreement  are  filed  herewith  as  Exhibits  2.1  and  99.1,
respectively, and are incorporated herein by reference.

     Consummation  of the  Merger is  subject  to  certain  closing  conditions,
including,  among others,  approval by the shareholders of NCE and NSP, approval
or regulatory review by certain state utilities  regulators,  the Securities and
Exchange  Commission  under the Public Utility  Holding  Company Act of 1935, as
amended, the Federal Energy Regulatory  Commission,  the Federal  Communications
Commission,  the Nuclear Regulatory  Commission and expiration or termination of
the  waiting  period  applicable  to  the  Merger  under  the  Hart-Scott-Rodino
Antitrust  Improvements Act of 1976, as amended. Each of NCE and NSP have agreed
to  certain  undertakings  and  limitations   regarding  the  conduct  of  their
businesses  prior to the closing of the  transaction.  The Merger is expected to
take from 12 to 18 months to complete.

     On March  24,  1999,  NCE  amended  (the  "Rights  Amendment")  its  Rights
Agreement  (the "Rights  Agreement")  dated as of August 1, 1997 between NCE and
The Bank of New York as Rights Agent,  to provide that NSP will not be deemed to
be an "Acquiring Person" as defined in the Rights Agreement,  as a result of the
execution,  delivery and performance of the Merger Agreement or the consummation
of the  transactions  contemplated  therein,  with the effect of  exempting  the
transactions contemplated by the Merger Agreement from the Rights Agreement, and
provides that all rights under the Rights Agreement expire at the effective time
of the Merger. The foregoing description of the Rights Agreement is qualified in
its entirety by reference to the terms of the Rights Amendment,  a copy of which
is attached hereto as Exhibit 99.2.


Item 7.  Financial Statements, Pro Forma Financial Information, and Exhibits

The following exhibits are filed herewith:


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2.1  Agreement  and Plan of Merger  dated as of March 24,  1999,  by and between
     Northern States Power Company and New Century Energies, Inc.

99.1 Press release dated March 25, 1999.

99.2 Amendment as of March 24, 1999 to the Rights  Agreement  dated as of August
     1, 1997 between New Century Energies, Inc. and The Bank of New York.


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                                    SIGNATURE

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                              NEW CENTURY ENERGIES, INC.


Dated:  March 25, 1999                        By:        /s/ Teresa S. Madden
                                                       -----------------------
                                                       Name:  Teresa S. Madden
                                                       Title:    Controller



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                                  EXHIBIT INDEX



EXHIBIT NUMBER                      DESCRIPTION


2.1                 Agreement  and Plan of Merger dated as of March 24, 1999, by
                    and between  Northern  States Power  Company and New Century
                    Energies, Inc.

99.1                Press release dated March 25, 1999.

99.2                Amendment as of March 24, 1999 to the Rights Agreement dated
                    as of August 1, 1997 between New Century Energies,  Inc. and
                    The Bank of New York.



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