EXHIBIT 99.01


Northern States Power Company Cautionary Factors

     The Private Securities Litigation Reform Act of 1995
provides a new "safe harbor" for forward-looking statements to
encourage such disclosures without the threat of litigation
providing those statements are identified as forward-looking and
are accompanied by meaningful, cautionary statements identifying
important factors that could cause the actual results to differ
materially from those projected in the statement.  Forward-
looking statements have been and will be made in written
documents and oral presentations of Northern States Power
Company (the Company).  Such statements are based on
management's beliefs as well as assumptions made by and
information currently available to management.  When used in the
Company's documents or oral presentations, the words
"anticipate", "estimate", "expect", "objective" and similar
expressions are intended to identify forward-looking statements. 
In addition to any assumptions and other factors referred to
specifically in connection with such forward-looking statements,
factors that could cause the Company's actual results to differ
materially from those contemplated in any forward-looking
statements include, among others, the following:

- -            Economic conditions including inflation rates and
             monetary fluctuations;

- -            Trade, monetary, fiscal, taxation, and environmental
             policies of governments, agencies and similar
             organizations in geographic areas where the Company has
             a financial interest;

- -            Customer business conditions including demand for their
             products or services and supply of labor and materials
             used in creating their products and services;

- -            Financial or regulatory accounting principles or policies
             imposed by the Financial Accounting Standards Board, the
             Securities and Exchange Commission, the Federal Energy
             Regulatory Commission and similar entities with
             regulatory oversight;

- -            Availability or cost of capital such as changes in:
             interest rates; market perceptions of the utility
             industry, the Company or any of its subsidiaries; or
             security ratings;

- -            Factors affecting utility and non-utility operations such
             as unusual weather conditions; catastrophic weather-
             related damage; unscheduled generation outages,
             maintenance or repairs; unanticipated changes to fossil
             fuel, nuclear fuel or gas supply costs or availability
             due to higher demand, shortages, transportation
             problems or other developments; nuclear or environmental
             incidents; or electric transmission or gas pipeline system
             constraints;

- -            Employee workforce factors including loss or retirement
             of key executives, collective bargaining agreements with
             union employees, or work stoppages;

- -            Increased competition in the utility industry, including:
             industry restructuring initiatives; transmission system
             operation and/or administration initiatives; recovery of
             investments made under traditional regulation; nature of
             competitors entering the industry; retail wheeling; a new
             pricing structure; and former customers entering the
             generation market;

- -            Rate-setting policies or procedures of regulatory
             entities, including environmental externalities;

- -            Nuclear regulatory policies and procedures including
             operating regulations and used nuclear fuel storage; 

- -            Social attitudes regarding the utility and power
             industries;

- -            Cost and other effects of legal and administrative
             proceedings, settlements, investigations and claims; 

- -            Technological developments that result in competitive
             disadvantages and create the potential for impairment of
             existing assets;

- -            Numerous matters associated with the proposed combination
             of the Company and Wisconsin Energy Corporation to form
             Primergy Corporation (Primergy), including:
             
             -     Regulatory authorities' decisions regarding business
                   combination issues including the approval of the business
                   combination as proposed, the rate structure of utility
                   operating companies after the merger, transmission system
                   operation and administration, or divestiture of gas
                   utility or non-regulated portions of the Company's
                   business; 

             -     Qualification of the transaction as a pooling of
                   interests;

             -     Factors affecting the anticipated cost savings
                   including national and regional economic conditions,
                   national and regional competitive conditions,
                   inflation rates, weather conditions, financial market
                   conditions, and synergies resulting from the business
                   combination;

             -     Allocation of benefits of cost savings between
                   shareholders and customers, which will depend, among
                   other things, upon the results of regulatory
                   proceedings in various jurisdictions;

             -     Regulation of Primergy as a registered public utility
                   holding company and other different or additional
                   federal and state regulatory requirements or
                   restrictions to which Primergy and its subsidiaries
                   may be subject as a result of the business combination
                   (including conditions which may be imposed in
                   connection with obtaining the regulatory approvals
                   necessary to consummate the business combination, such
                   as the possible requirement to divest gas utility and
                   possibly certain non-regulated operations);

             -     Factors affecting dividend policy including results of
                   operations and financial condition of Primergy and its
                   subsidiaries and such other business considerations as
                   the Primergy Board of Directors considers relevant. 

- -            Factors associated with non-regulated investments
             including conditions of final legal closing, foreign
             government actions, foreign economic and currency risks,
             political instability in foreign countries, partnership
             actions, competition, operating risks, dependence on
             certain suppliers and customers, domestic and foreign
             environmental and energy regulations;

- -            Most of the current project investments made by the
             Company's subsidiary, NRG Energy, Inc. (NRG) consist of
             minority interests, and a substantial portion of future
             investments may take the form of minority interests,
             which limits NRG's ability to control the development or
             operation of the project;

- -            Other business or investment considerations that may be
             disclosed from time to time in the Company's Securities
             and Exchange Commission filings or in other publicly
             disseminated written documents.

The Company undertakes no obligation to publicly update or
revise any forward-looking statements, whether as a result of
new information, future events or otherwise.