As filed with the Securities and Exchange Commission on July 10, 1997


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 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) July 9, 1997


                        NIAGARA MOHAWK POWER CORPORATION
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


                                    New York
- --------------------------------------------------------------------------------
                 (State or Other Jurisdiction of Incorporation)


   1-2987                                                15-0265555
- --------------------------------------------------------------------------------
(Commission File Number)                      (IRS Employer Identification No.)


300 Erie Boulevard West, Syracuse, NY                       13202
- --------------------------------------------------------------------------------
(Address of Principal Executive Offices)                 (Zip Code)


                                 (315) 474-1511
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              (Registrant's Telephone Number, Including Area Code)


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



                                     Page 1
                             Exhibit Index on Page 5






Items 1-4.  Not Applicable.


Item 5.     Other Events.

            On July 9, 1997, Niagara Mohawk Power Corporation (the "Company")
entered into a Master Restructuring Agreement (the "MRA") with sixteen
independent power producers (the "IPPs") who have twenty-nine power purchase
agreements with the Company. Pursuant to the MRA, such power purchase agreements
will be terminated, restated or amended, in exchange for an aggregate of
$3,555,000,000 in cash, $50,000,000 in short term notes or cash (at the
Company's option), forty-six million shares of the Company's Common Stock and
certain fixed price swap contracts. A schedule setting forth the quantities and
prices for the new contracts is filed as Exhibit 99.3 hereto and incorporated
herein by reference. The closing of the MRA is conditioned upon, among other
things, the Company and the IPPs negotiating their individual restated and
amended contracts, the receipt of all regulatory approvals, the receipt of all
consents by third parties necessary for the transactions contemplated by the MRA
(including the termination of the existing power purchase contracts and the
termination or amendment of all related third party agreements), the IPPs
entering into new third party arrangements which will enable each IPP to
restructure its projects on a reasonably satisfactory economic basis, the
Company having completed all necessary financing arrangements and the Company
and the IPPs having received all necessary approvals from their respective
boards of directors, shareholders and partners. While one or more IPPs may under
certain circumstances terminate the MRA with respect to itself, the Company's
obligation to close the MRA is subject to its determination that as a result of
any such terminations the benefits anticipated to be received by the Company
pursuant to the MRA have not been materially and adversely affected. The
foregoing is qualified in its entirety by the text of the MRA, a copy of which
is filed as Exhibit 10.28 hereto and incorporated herein by reference.


Item 6.  Not Applicable.


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

         (a) - (b)    Not Applicable.




                                     Page 2





         (c)  Exhibits Required by Item 601 of Regulation S-K.


     Exhibit Number            Description
     --------------            -----------

          10.28        Master Restructuring Agreement, dated as of July 9, 1997,
                       between the Company and the sixteen independent power
                       producers signatory thereto

          99.1         Press Release, dated July 10, 1997

          99.2         Slide presentation to be provided to analysts on July 11,
                       1997 concerning Master Restructuring Agreement. (The
                       slide presentation contains certain forward looking
                       statements with respect to the financial condition,
                       results of operations and business of Niagara Mohawk
                       Power Corporation, including statements relating to (a)
                       energy cost savings that will be realized by consummation
                       of the Master Restructuring Agreement including, by
                       implication, market prices for energy; (b) the impact of
                       the transaction on cash flow; and (c) management plans
                       and objectives for the Company's future operations. These
                       forward looking statements involve certain risks and
                       uncertainties. Factors that may cause actual results to
                       differ materially from those contemplated by such forward
                       looking statements include, among others, the following
                       possibilities: (1) failure of some independent power
                       producers to consummate the proposed transaction; (2)
                       changes in market prices for electric energy; (3) changes
                       in financing costs; (4) federal income tax treatment of
                       the transaction; (5) changes in capital expenditures; (6)
                       general economic conditions, either nationally or in New
                       York state, are less favorable than expected; (7)
                       regulatory treatment of the transaction, including a
                       prudence determination, establishing appropriate price
                       levels, authorizing regulatory assets and stranded cost
                       recovery; or (8) legislative or regulatory changes
                       adversely affect the business in which the Company would
                       be engaged.)

          99.3         Contract Schedule


Items 8-9.  Not Applicable.






                                     Page 3



           NIAGARA MOHAWK POWER CORPORATION AND SUBSIDIARY COMPANIES



                                    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, hereto duly authorized.

                                            NIAGARA MOHAWK POWER CORPORATION
                                                    (Registrant)


                                            By:  /s/  Steven W. Tasker
                                               ---------------------------------
                                               Steven W. Tasker
                                               Vice President-Controller and
                                               Principal Accounting Officer



Date:  July 10, 1997







                                     Page 4




                                  EXHIBIT INDEX
                                  -------------



Exhibit Number                    Description
- --------------                    -----------

     10.28            Master Restructuring Agreement, dated as of July 9, 1997, 
                      between the Company and the sixteen independent power 
                      producers signatory thereto

     99.1             Press Release, dated July 10, 1997

     99.2             Slide presentation to be provided to analysts on July 11,
                      1997 concerning Master Restructuring Agreement. (The
                      slide presentation contains certain forward looking
                      statements with respect to the financial condition,
                      results of operations and business of Niagara Mohawk
                      Power Corporation, including statements relating to (a)
                      energy cost savings that will be realized by consummation
                      of the Master Restructuring Agreement including, by
                      implication, market prices for energy; (b) the impact of
                      the transaction on cash flow; and (c) management plans
                      and objectives for the Company's future operations. These
                      forward looking statements involve certain risks and
                      uncertainties. Factors that may cause actual results to
                      differ materially from those contemplated by such forward
                      looking statements include, among others, the following
                      possibilities: (1) failure of some independent power
                      producers to consummate the proposed transaction; (2)
                      changes in market prices for electric energy; (3) changes
                      in financing costs; (4) federal income tax treatment of
                      the transaction; (5) changes in capital expenditures; (6)
                      general economic conditions, either nationally or in New
                      York state, are less favorable than expected; (7)
                      regulatory treatment of the transaction, including a
                      prudence determination, establishing appropriate price
                      levels, authorizing regulatory assets and stranded cost
                      recovery; or (8) legislative or regulatory changes
                      adversely affect the business in which the Company would
                      be engaged.)

     99.3             Contract Schedule





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