FORM 8 - K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report - January 19, 2001

Commission                              Registrant, State of Incorporation                            I.R.S. Employer
File Number                              Address and Telephone Number                               Identification No.
0-25595                                    Niagara Mohawk Holdings, Inc.                              16-1549726
                                               (a New York corporation)
                                               300 Erie Boulevard West
                                               Syracuse, New York 13202
                                              315.474.1511

1-2987                                     Niagara Mohawk Power Corporation                     15-0265555
                                               (a New York corporation)
                                               300 Erie Boulevard West
                                               Syracuse, New York 13202
                                               315.474.1511

Item 5.  Other Events

(a)   On January 19, 2001, Niagara Mohawk Holdings, Inc. issued a press release relating to the shareholder approval
       of the merger with National Grid plc. See attached Exhibit No. 99.

Item 7. Financial Statements and Exhibits

Exhibits – Following is the list of exhibits furnished in accordance with the provisions of Item 601 of Regulation S-K, filed as part of this current report on Form 8-K.

Exhibit No. 99 – Press release of Niagara Mohawk Holdings, Inc. issued on January 19, 2001 relating to the shareholder approval of the merger with National Grid plc.

NIAGARA MOHAWK HOLDINGS, INC. AND SUBSIDIARY COMPANIES

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized.

                                                                                 NIAGARA MOHAWK HOLDINGS, INC.
                                                                                                           (Registrant)

Date:  January 19, 2001                                       By:     /s/ Steven W. Tasker
                                                                                          Steve W. Tasker
                                                                                          Vice President–Controller and
                                                                                          Principal Accounting Officer,                                                                                                                             in his respective capacities as such

                                                                                 NIAGARA MOHAWK POWER CORPORATION
                                                                                                           (Registrant)

Date:  January 19, 2001                                       By:     /s/ Steven W. Tasker
                                                                                          Steve W. Tasker
                                                                                          Vice President–Controller and
                                                                                          Principal Accounting Officer,                                                                                                                             in his respective capacities as such

EXHIBIT INDEX

Following is the index of Exhibits furnished in accordance with the provisions of Item 601 of Regulation S-K, filed as part of this current report on Form 8-K.

Exhibit No. 99 – Press release of Niagara Mohawk Holdings, Inc. issued on January 19, 2001 relating to the shareholder approval of the merger with National Grid plc.