NORTHERN STATES POWER COMPANY
                           (A WISCONSIN CORPORATION)
                              FIRST MORTGAGE BONDS
                             UNDERWRITING AGREEMENT
 
To the Representatives named in Schedule I
  hereto of the Underwriters named in
  Schedule II hereto
 
Dear Sirs:
 
    Northern States Power Company, a Wisconsin corporation (the "Company"),
proposes to sell to the underwriters named in Schedule II hereto (the
"Underwriters") for whom you are acting as representatives (the
"Representatives"), its First Mortgage Bonds of the designation, with the terms
and in the aggregate principal amount specified in Schedule I hereto (the
"Bonds") to be issued under its Trust Indenture, dated as of April 1, 1947, from
the Company to Firstar Trust Company (formerly known as First Wisconsin Trust
Company), as trustee (the "Trustee"), as heretofore supplemented and amended by
supplemental trust indentures, including the Supplemental and Restated Trust
Indenture dated March 1, 1991, and as to be further supplemented and amended by
a supplemental trust indenture relating to the Bonds (such Trust Indenture as so
supplemented and amended and as to be so supplemented and amended being
hereinafter referred to as the "Indenture"). If the firm or firms listed in
Schedule II hereto include only the firm or firms listed in Schedule I hereto,
then the terms "Underwriters" and "Representatives," as used herein, shall each
be deemed to refer to such firm or firms.
 
    1.  REPRESENTATIONS AND WARRANTIES BY THE COMPANY.  The Company represents
and warrants to, and agrees with, each Underwriter that:
 
        (a) The Company meets the requirements for use of Form S-3 under the
    Securities Act of 1933, as amended (the "Act") and has filed with the
    Securities and Exchange Commission (the "Commission") a registration
    statement on such Form, including a prospectus, for the registration under
    the Act of the Bonds, which registration statement has become effective.
    Such registration statement and prospectus may have been amended or
    supplemented from time to time prior to the date of this Agreement (which
    date is set forth in Schedule I hereto). Any such amendment or supplement
    was filed with the Commission and any such amendment has become effective.
    The Company will file with the Commission a prospectus supplement (the
    "Prospectus Supplement") relating to the Bonds pursuant to Rule 424 and/or
    Rule 434 under the Act. Copies of such registration statement and
    prospectus, any such amendment or supplement and all documents incorporated
    by reference therein which were filed with the Commission on or prior to the
    date of this Agreement have been delivered to you and copies of the
    Prospectus Supplement will be delivered to you promptly after it is filed
    with the Commission. Such registration statement as amended prior to the
    date of this Agreement, and such prospectus, as amended and supplemented
    prior to the date of this Agreement and as supplemented by the Prospectus
    Supplement, are hereinafter called the "Registration Statement" and the
    "Prospectus", respectively. Any reference herein to the Registration
    Statement or the Prospectus shall be deemed to refer to and include the
    documents incorporated by reference therein pursuant to Item 12 of Form S-3
    which were filed under the Securities Exchange Act of 1934, as amended (the
    "Exchange Act") on or before the date of this Agreement and, if the Company
    files any document pursuant to the Exchange Act after the date of this
    Agreement and prior to the termination of the offering of the Bonds by the
    Underwriters, which documents are deemed to be incorporated by reference
    into the Prospectus, the term "Prospectus" shall refer also to said
    prospectus as supplemented by the documents so filed from and after the time
    said documents are filed with the
 
                                       1

    Commission. There are no contracts or documents of the Company that are
    required to be filed as exhibits to the Registration Statement or any
    documents incorporated by reference therein by the Act, the Exchange Act or
    the rules and regulations thereunder which have not been so filed.
 
        (b) No order preventing or suspending the use of the Prospectus or the
    Registration Statement has been issued by the Commission and the
    Registration Statement, at the date of this Agreement, complied in all
    material respects with the requirements of the Act, the Trust Indenture Act
    of 1939, as amended (the "Trust Indenture Act") and the respective rules and
    regulations thereunder and did not contain any untrue statement of a
    material fact or omit any material fact required to be stated therein or
    necessary in order to make the statements therein not misleading; and, at
    the time the Prospectus Supplement is filed with the Commission and at the
    Closing Date (as hereinafter defined), the Prospectus will comply in all
    material respects with the Act and the rules and regulations thereunder and
    will not contain any untrue statement of a material fact or omit to state
    any material fact required to be stated therein or necessary to make the
    statements therein not misleading; PROVIDED that the Company makes no
    representations or warranties as to (A) that part of the Registration
    Statement which shall constitute the Statement of Eligibility (Form T-1)
    under the Trust Indenture Act of the Trustee or (B) the information
    contained in or omitted from the Registration Statement or the Prospectus in
    reliance upon and in conformity with information furnished in writing to the
    Company by or on behalf of any Underwriter through the Representatives
    specifically for use in connection with the preparation of the Registration
    Statement or Prospectus.
 
        (c) The documents incorporated by reference in the Prospectus, when they
    were filed with the Commission, conformed in all material respects to the
    requirements of the Exchange Act and the rules and regulations of the
    Commission thereunder, and any documents so filed and incorporated by
    reference subsequent to the date of this Agreement will, when they are filed
    with the Commission, conform in all material respects to the requirements of
    the Exchange Act, and the rules and regulations of the Commission
    thereunder; and none of such documents include or will include any untrue
    statement of a material fact or omit or will omit to state any material fact
    required to be stated therein or necessary to make the statements therein in
    the light of the circumstances under which they were made not misleading.
 
        (d) Deloitte & Touche LLP and Price Waterhouse LLP, which audited
    certain of the financial statements incorporated by reference in the
    Registration Statement, are each independent public accountants as required
    by the Act and the rules and regulations of the Commission thereunder.
 
        (e) The financial statements of the Company filed as a part of or
    incorporated by reference in the Registration Statement or Prospectus fairly
    present the financial position of the Company as of the dates indicated and
    the results of its operations and changes in financial position for the
    periods specified, and have been prepared in conformity with generally
    accepted accounting principles applied on a consistent basis throughout the
    periods involved, except as disclosed in the Prospectus Supplement. The
    unaudited pro forma financial information incorporated by reference in the
    Registration Statement and the Prospectus complies in all material respects
    with the applicable accounting requirements of Rule 11-02 of Regulation S-X
    and the pro forma adjustments have been properly applied to the historical
    amounts in the compilation of such information.
 
        (f) The Company has been duly incorporated and is validly existing as a
    corporation in good standing under the laws of the State of Wisconsin with
    due corporate authority to carry on the business in which it is engaged and
    to own and operate the properties used by it in such business, as described
    in the Prospectus; the Company is qualified to do business as a foreign
    corporation and is in good standing under the laws of the State of Michigan;
    and the Company is not required by the nature of its business to be licensed
    or qualified as a foreign corporation in any other state or jurisdiction;
    and, except as set forth in the Prospectus Supplement, the Company has all
    material licenses and approvals required at the date hereof to conduct its
    business.
 
                                       2

        (g) The authorized, issued and outstanding capital stock of the Company
    is as set forth in the Prospectus (except for subsequent issuance, if any,
    pursuant to reservations or agreements referred to therein); the shares of
    issued and outstanding capital stock of the Company have been duly and
    validly issued, are fully paid and non-assessable and are owned by Northern
    States Power Company, a Minnesota corporation.
 
        (h) The Company has not sustained since the date of the latest audited
    financial statements included or incorporated by reference in the Prospectus
    any material loss or interference with its business from fire, explosion,
    flood or other calamity, whether or not covered by insurance, or from any
    labor dispute or court or governmental action, order or decree, otherwise
    than as set forth or contemplated in the Prospectus Supplement; and, since
    the respective dates as of which information is given in the Registration
    Statement and the Prospectus Supplement, the Company has not incurred any
    liabilities or obligations, direct or contingent, or entered into any
    transactions, not in the ordinary course of business, which are material to
    the Company, and there has not been any material change in the capital stock
    or long-term debt of the Company or any material adverse change, or any
    development involving a prospective material adverse change, in or affecting
    the general affairs, management, financial position, stockholders' equity or
    results of operations of the Company, otherwise than as set forth or
    contemplated in the Prospectus Supplement.
 
        (i) Neither the execution and delivery of this Agreement and the
    Indenture, the issuance and delivery of the Bonds, the consummation of the
    transactions herein contemplated, the fulfillment of the terms hereof, nor
    compliance with the terms and provisions of this Agreement, the Bonds and
    the Indenture will conflict with, or result in the breach of, any of the
    terms, provisions or conditions of the Restated Articles of Incorporation,
    as amended, or By-laws of the Company, or of any contract, agreement or
    instrument to which the Company is a party or in which the Company has a
    beneficial interest or by which the Company is bound or of any order, rule
    or regulation applicable to the Company of any court or of any federal or
    state regulatory body or administrative agency or other governmental body
    having jurisdiction over the Company or over its properties.
 
        (j)  The Bonds have been duly authorized for issuance and sale pursuant
    to this Agreement and, when executed and authenticated in accordance with
    the Indenture and delivered and paid for as provided herein, will be duly
    issued and will constitute valid and binding obligations of the Company
    enforceable in accordance with their terms, except as limited by bankruptcy,
    insolvency and other laws affecting enforcement of creditors' rights, and
    will be entitled to the benefits of the Indenture which will be
    substantially in the form heretofore delivered to you.
 
        (k) The Indenture has been duly and validly authorized by the Company
    and, when duly executed and delivered by the Company, assuming due
    authorization, execution and delivery thereof by the Trustee, will
    constitute a valid and binding obligation of the Company enforceable in
    accordance with its terms, except as enforcement thereof may be limited by
    bankruptcy, insolvency or other laws affecting enforcement of creditors'
    rights.
 
        (l) The Public Service Commission of Wisconsin has issued its order
    authorizing the issuance and sale of the Bonds on terms consistent with this
    Agreement. Each other consent, approval, authorization, order, registration
    or qualification of or with any regulatory public body, state or federal,
    that is, or will be at the Closing Date, necessary in connection with the
    issuance and sale of the Bonds pursuant to this Agreement has been or will
    be obtained, other than approvals that may be required under state
    securities laws.
 
        (m) The Company has good and valid title to all real and fixed property
    and leasehold rights described or enumerated in the Indenture (except such
    properties as have been released from the lien thereof in accordance with
    the terms thereof), subject only to Permitted Encumbrances (as defined in
    the Indenture).
 
                                       3

        (n) Other than as set forth or contemplated in the Prospectus, there are
    no legal or governmental proceedings pending to which the Company is a party
    or of which any property of the Company is the subject which, if determined
    adversely to the Company, would individually or in the aggregate have a
    material adverse effect on the financial position, stockholders' equity or
    results of operations of the Company; and, to the best of the Company's
    knowledge, no such proceedings are threatened or contemplated by
    governmental authorities or threatened by others.
 
        (o) The Company has all necessary power under statutory provisions or
    permits to use its operating electric and gas properties.
 
        (p) The Company has no "significant subsidiary", within the meaning of
    Rule 1.02(v) of Regulation S-X under the Act.
 
        (q) The Company is not an "investment company" or an entity "controlled"
    by an "investment company", as such terms are defined in the Investment
    Company Act of 1940, as amended.
 
        (r) Except as set forth in the Prospectus Supplement, the Company (A) is
    in compliance with any and all applicable federal, state and local laws and
    regulations relating to the protection of human health and safety, the
    environment or hazardous or toxic substances or wastes, pollutants or
    contaminants ("Environmental Laws"), (B) has received all permits, licenses
    or other approvals required of it under applicable Environmental Laws to
    conduct its business and (C) is in compliance with all terms and conditions
    of any such permits, licenses or approvals, except where such noncompliance
    with Environmental Laws, failure to receive required permits, licenses or
    other approvals or failure to comply with the terms and conditions of such
    permits, licenses or approvals would not, singly or in the aggregate, have a
    material adverse effect on the Company.
 
    2.  PURCHASE AND SALE.  Subject to the terms and conditions and in reliance
upon the representations and warranties herein set forth, the Company agrees to
sell to the Representatives and each other Underwriter, and the Representatives
and each other Underwriter agree, severally and not jointly, to purchase from
the Company, at the purchase price set forth in Schedule I hereto, the
respective principal amounts of the Bonds set forth opposite their respective
names in Schedule II hereto.
 
    3.  DELIVERY AND PAYMENT.  Delivery of and payment for the Bonds shall be
made at the place, date and time specified in Schedule I hereto (or such other
place, date and time not later than eight full business days thereafter as the
Representatives and the Company shall designate), which date and time may be
postponed by agreement between the Representatives and the Company (such date
and time being herein called the "Closing Date"). Delivery of the Bonds shall be
made to the Representatives for the respective accounts of the several
Underwriters against payment by the several Underwriters through the
Representatives of the purchase price thereof to or upon the order of the
Company by certified or official bank check or checks payable in New York
Clearing House (next day) funds or, if so indicated in Schedule I hereto, in
federal (same day) funds. The Bonds will be delivered in definitive registered
form except that, if for any reason the Company is unable to deliver the Bonds
in definitive form, the Company reserves the right, as provided in the
Indenture, to make delivery in temporary form. Any Bonds delivered in temporary
form will be exchangeable without charge for Bonds in definitive form. The Bonds
will be registered in the names of the Underwriters and in the principal amounts
set forth in Schedule II hereto except that if the Company receives a written
request from the Representatives prior to noon on the third business day
preceding the Closing Date giving the names in which the Bonds are to be
registered and the principal amounts thereof (which shall in each case be a
multiple of $1,000) the Company will deliver the Bonds so registered. The Bonds
will be made available to the Representatives for checking in New York, New
York, not later than 2:00 p.m., New York time, on the business day preceding the
Closing Date.
 
                                       4

    4.  AGREEMENTS.  The Company agrees with the several Underwriters that:
 
        (a) With the consent of the Representatives, the Company will cause the
    Prospectus Supplement to be filed pursuant to Rule 424(b) and/or Rule 434
    under the Act and will notify the Representatives promptly of such filing.
    During the period for which a prospectus relating to the Bonds is required
    to be delivered under the Act, the Company will promptly advise the
    Representatives (i) when any amendment to the Registration Statement shall
    have become effective, (ii) when any subsequent supplement to the Prospectus
    (including documents deemed to be incorporated by reference into the
    Prospectus) has been filed, (iii) of any request by the Commission for any
    amendment of or supplement to the Registration Statement or the Prospectus
    or for any additional information, and (iv) of the issuance by the
    Commission of any stop order suspending the effectiveness of the
    Registration Statement or the institution or threatening of any proceedings
    for that purpose. The Company will not file any amendment of the
    Registration Statement or supplement to the Prospectus (including documents
    deemed to be incorporated by reference into the Prospectus) unless the
    Company has furnished to the Representatives a copy for their review prior
    to filing and will not file any such proposed amendment or supplement to
    which the Representatives reasonably object. The Company will use its best
    efforts to prevent the issuance of any such stop order and, if issued, to
    obtain as soon as possible the withdrawal thereof.
 
        (b) If, at any time when a prospectus relating to the Bonds is required
    to be delivered under the Act, any event occurs as a result of which the
    Prospectus as then amended or supplemented would include any untrue
    statement of a material fact or omit to state any material fact necessary to
    make the statements therein, in the light of the circumstances under which
    they were made, not misleading, or if it shall be necessary at any time to
    amend or supplement the Prospectus to comply with the Act or the Exchange
    Act or the respective rules and regulations of the Commission thereunder,
    the Company promptly, subject to paragraph (a) of this Section 4, will
    prepare and file an amendment or supplement to the Prospectus with the
    Commission or will make a filing with the Commission pursuant to Section 13
    or 14 of the Exchange Act, which will correct such statement or omission or
    will effect such compliance.
 
        (c) The Company will make generally available to its security holders
    and to the Representatives a consolidated earnings statement (which need not
    be audited) of the Company, for a twelve-month period beginning after the
    date of the Prospectus Supplement filed pursuant to Rule 424(b) and/or Rule
    434 under the Act, as soon as is reasonably practicable after the end of
    such period, but in any event no later than eighteen months after the
    "effective date of the Registration Statement" (as defined Rule 158(c) under
    the Act), which will satisfy the provision of Section 11(a) of the Act and
    the rules and regulations of the Commission thereunder (including at the
    option of the Company, Rule 158).
 
        (d) The Company will furnish to each of the Representatives a signed
    copy of the Registration Statement as originally filed and of each amendment
    thereto, including the Form T-1 of the Trustee and all powers of attorney,
    consents and exhibits filed therewith (other than exhibits incorporated by
    reference), and will deliver to the Representatives conformed copies of the
    Registration Statement, the Prospectus (including all documents incorporated
    by reference therein) and, so long as delivery of a prospectus by an
    Underwriter or dealer may be required by the Act, all amendments of and
    supplements to such documents, in each case as soon as available and in such
    quantities as the Representatives may reasonably request.
 
        (e) The Company will furnish such information, execute such instruments
    and take such action as may be required to qualify the Bonds for sale under
    the laws of such jurisdictions as the Representatives may designate and will
    maintain such qualifications in effect so long as required for the
    distribution of the Bonds; PROVIDED that the Company shall not be required
    to qualify to do business in any jurisdiction where it is not now so
    qualified or to take any action which would subject it to general or
    unlimited service of process in any jurisdiction where it is not now so
    subject.
 
                                       5

        (f) So long as the Bonds are outstanding, the Company will furnish (or
    cause to be furnished) to each of the Representatives, upon request, copies
    of (i) all reports to stockholders of the Company and (ii) all reports and
    financial statements filed with the Commission or any national securities
    exchange.
 
        (g) During the period beginning from the date of this Agreement and
    continuing to the Closing Date, the Company will not offer, sell, or
    otherwise dispose of any first mortgage bonds of the Company (except under
    prior contractual commitments which have been disclosed to the
    Representatives), without the prior written consent of the Representatives,
    which consent shall not be unreasonably withheld.
 
    5.  EXPENSES.  Whether or not the transactions contemplated hereunder are
consummated or this Agreement is terminated, the Company will pay all costs and
expenses incident to the performance of the obligations of the Company
hereunder, including, without limiting the generality of the foregoing, all
costs, taxes and expenses incident to the issue and delivery of the Bonds to the
Underwriters, all fees and expenses of the Company's counsel and accountants,
all costs and expenses incident to the preparing, printing and filing of the
Registration Statement (including all exhibits thereto), the Prospectus
(including all documents incorporated by reference therein) and any amendments
thereof or supplements thereto, all costs and expenses (including fees and
expenses of counsel) incurred in connection with "blue sky" qualifications, the
determination of the legality of the Bonds for investment by institutional
investors and the rating of the Bonds, and all costs and expenses of the
printing and distribution of all documents in connection with this underwriting.
Except as provided in this Section 5 and Section 8 hereto, the Underwriters will
pay all their own costs and expenses, including the fees of their counsel and
any advertising expenses in connection with any offer they may make.
 
    6.  CONDITIONS TO THE OBLIGATIONS OF THE UNDERWRITERS.  The obligations of
the Underwriters to purchase the Bonds shall be subject, in the discretion of
the Representatives, to the accuracy of the representatives and warranties on
the part of the Company contained herein as of the date hereof and the Closing
Date, to the accuracy of the statements of Company officers made in any
certificates given pursuant to the provisions hereof, to the performance by the
Company of its obligations hereunder and to the following additional conditions:
 
        (a) The Prospectus Supplement relating to the Bonds shall have been
    filed with the Commission pursuant to Rule 424(b) and/or Rule 434 within the
    applicable time period prescribed for such filing by the rules and
    regulations under the Act and in accordance with Section 4(a) hereof; no
    stop order suspending the effectiveness of the Registration Statement or any
    part thereof shall have been issued and no proceeding for that purpose shall
    have been initiated or threatened by the Commission, and all requests for
    additional information on the part of the Commission shall have been
    complied with to the Representatives' reasonable satisfaction.
 
        (b) The Representatives shall be furnished with opinions, dated the
    Closing Date, of John P. Moore, Jr., General Counsel and Secretary of the
    Company, substantially in the form included as Exhibit A.
 
        (c) The Representatives shall have received from Gardner, Carton &
    Douglas, Chicago, Illinois, counsel for the Underwriters, such opinion or
    opinions dated the Closing Date with respect to the incorporation of the
    Company, this Agreement, the validity of the Indenture, the Bonds, the
    Registration Statement, the Prospectus and other related matters as the
    Representatives may reasonably require, and the Company shall have furnished
    to such counsel such documents as they reasonably request for the purpose of
    enabling them to pass upon such matters.
 
                                       6

        (d) The Company shall have furnished to the Underwriters the opinion of
    Loomis, Ewert, Parsley, Davis & Gotting, special Michigan counsel for the
    Company, dated the Closing Date, to the effect that:
 
           (i) the Company is duly authorized as a foreign corporation under the
       laws of the State of Michigan and has corporate power, right and
       authority to do business in the State of Michigan in the manner as set
       forth in the Prospectus to the extent it is authorized to transact such
       business in the State of Wisconsin, and to own property in the State of
       Michigan in the manner set forth in the Prospectus;
 
           (ii) the Indenture is in proper form, conforming to the laws of the
       State of Michigan, to give and create the lien which it purports to
       create as to the property therein described and located in the State of
       Michigan assuming that the Company holds marketable record title to such
       property, except that the lien of the Indenture may not be effective as
       to a bona fide purchaser (including a mortgagee) for value of any
       after-acquired real property from the Company, unless a supplemental
       indenture to the Trustee specifically describing such property has been
       duly recorded prior to such purchase or the effective date of recording
       of such other lien; and the Indenture is duly and properly recorded or
       filed in all places in Michigan necessary to effectuate the lien of the
       Indenture as to said property;
 
          (iii) the Company has all necessary power under Michigan statutory
       provisions and has all necessary franchises to use its operating electric
       and gas properties in Michigan, except that no determination has been
       made whether the Company or its Michigan predecessor has secured permits
       and approvals, if any, required by the Wetlands Protection Act, 1979 PA
       302, and except that the Company does not have electric franchises in the
       cities of Ironwood, Bessemer and Wakefield, County of Gogebic, State of
       Michigan. However, counsel for the Company, Aberg, Bell, Blake & Metzner,
       rendered an opinion on April 19, 1968, that municipal franchises were not
       required for the cities of Ironwood and Bessemer; and
 
          (iv) No approval, authorization, consent, certificate or order of any
       Michigan commission or regulatory authority is required in connection
       with the issuance and sale of the Bonds by the Company to the
       Underwriters as provided in this Agreement except as may be required
       under state securities laws.
 
        (e) The Company shall have furnished to the Representatives a
    certificate of the President or any Vice President of the Company, dated the
    Closing Date, as to the matters set forth in paragraph (a) and (i) of this
    Section 6 and to the further effect that the signers of such certificate
    have carefully examined the Registration Statement, the Prospectus and this
    Agreement and that:
 
           (i) the representations and warranties of the Company in this
       Agreement are true and correct on and as of the Closing Date with the
       same effect as if made on the Closing Date, and the Company has complied
       with all the agreements and satisfied all the conditions on its part to
       be performed or satisfied at or prior to the Closing Date, and
 
           (ii) there has been no material adverse change in the condition of
       the Company, financial or otherwise, or in the earnings, affairs or
       business prospects of the Company, whether or not arising in the ordinary
       course of business, from that set forth or contemplated by the
       Registration Statement or Prospectus Supplement.
 
        (f) The Representatives shall have received letters from the Company's
    independent public accountants (dated the date of this Agreement and Closing
    Date, respectively, and in form and substance satisfactory to the
    Representatives) advising that (i) they are independent public accountants
    as required by the Act and published rules and regulations of the Commission
    thereunder, (ii) in their opinion, the financial statements and financial
    statement schedules incorporated by reference in the Registration Statement
    and covered by their opinion filed with the Commission under Section 13 of
    the Exchange Act comply as to form in all material respects
 
                                       7

    with the applicable accounting requirements of the Exchange Act and the
    published rules and regulations thereunder, (iii) they have performed
    limited procedures, not constituting an audit, including a reading of the
    latest available interim financial statements of the Company, a reading of
    the minutes of meetings of the Board of Directors, committees thereof, and
    of the Shareholders, of the Company since the date of the most recent
    audited financial statements included or incorporated by reference in the
    Prospectus, inquiries of officials of the Company responsible for financial
    accounting matters and such other inquiries and procedures as may be
    specified in such letter, and on the basis of such limited review and
    procedures nothing came to their attention that caused them to believe that:
    (a) any material modifications should be made to any unaudited financial
    statements of the Company included or incorporated by reference in the
    Registration Statement or Prospectus for them to be in conformity with
    generally accepted accounting principles or any unaudited financial
    statements of the Company included or incorporated by reference in the
    Registration Statement or Prospectus do not comply as to form in all
    material respects with the applicable accounting requirements of the
    Exchange Act and the rules and regulations of the Commission applicable to
    Form 10-Q; (b) with respect to the period subsequent to the date of the most
    recent financial statements included or incorporated by reference in the
    Prospectus and except as set forth in or contemplated by the Registration
    Statement or Prospectus, there were any changes, at a specified date not
    more than five business days prior to the date of the letter, in the capital
    stock of the Company, increases in long-term debt or decreases in
    stockholders' equity or net current assets of the Company as compared with
    the amounts shown on the most recent consolidated balance sheet included or
    incorporated in the Prospectus, or for the period from the date of the most
    recent financial statements included or incorporated by reference in the
    Prospectus to such specified date there were any decreases, as compared with
    the corresponding period in the preceding year, in operating revenues,
    operating income, or net income, except in all instances for changes or
    decreases set forth in such letter, in which case the letter shall be
    accompanied by an explanation by the Company as to the significance thereof
    unless said explanation is not deemed necessary by the Representatives; (iv)
    they have carried out specified procedures performed for the purpose of
    comparing certain specified financial information and percentages (which is
    limited to financial information derived from general accounting records of
    the Company) included or incorporated by reference in the Registration
    Statement and Prospectus with indicated amounts in the financial statements
    or accounting records of the Company and (excluding any questions of legal
    interpretation) have found such information and percentages to be in
    agreement with the relevant accounting and financial information of the
    Company referred to in such letter in the description of the procedures
    performed by them; and (v) on the basis of a reading of the unaudited pro
    forma financial information incorporated by reference in the Registration
    Statement and the Prospectus, carrying out certain specified procedures that
    would not necessarily reveal matters of significance with respect to the
    comments set forth in this paragraph (v), inquiries of certain officials of
    the Company who have responsibility for financial and accounting matters and
    proving the arithmetic accuracy of the application of the pro forma
    adjustments to the historical amounts in the unaudited pro forma financial
    information, nothing came to their attention that caused them to believe
    that the unaudited pro forma financial information does not comply in form
    in all material respects with the applicable accounting requirements of Rule
    11-02 of Regulation S-X or that the pro forma adjustments have not been
    properly applied to the historical amounts in the compilation of such
    information.
 
        (g) Subsequent to the respective dates as of which information is given
    in the Registration Statement and the Prospectus, there shall not have been
    any change or decrease specified in the letter or letters referred to in
    paragraph (f) of this Section 6 which makes it impractical or inadvisable in
    the judgment of the Representatives to proceed with the public offering or
    the delivery of the Bonds on the terms and in the manner contemplated by the
    Prospectus.
 
        (h) Subsequent to the date hereof, no downgrading shall have occurred,
    nor shall any notice have been given of any intended or potential
    downgrading or of any review for a possible change
 
                                       8

    that does not indicate the direction of the possible change, in the rating
    accorded the Company's debt securities or preferred stock by any "nationally
    recognized statistical rating organization," as that term is defined by the
    Commission for purposes of Rule 436(g)(2) under the Act.
 
        (i) (i) The Company shall not have sustained since the date of the
    latest audited financial statements included or incorporated by reference in
    the Prospectus any loss or interference with its business from fire,
    explosion, flood or other calamity, whether or not covered by insurance, or
    from any labor dispute or court or governmental action, order or decree,
    otherwise than as set forth or contemplated in the Prospectus Supplement,
    and (ii) since the date of this Agreement, the Company shall not have
    incurred any liabilities or obligations, direct or contingent, or entered
    into any transactions, not in the ordinary course of business, which are
    material to the Company, and there shall not have been any change in the
    capital stock or long-term debt of the Company or any change, or any
    development involving a prospective change, in or affecting the general
    affairs, management, financial position, stockholders' equity or results of
    operations of the Company otherwise than as set forth or contemplated in the
    Prospectus Supplement, the effect of which, in any such case described in
    clause (i) or (ii) is in the judgment of the Representatives so material and
    adverse as to make it impracticable or inadvisable to proceed with the
    public offering or the delivery of the Bonds on the terms and in the manner
    contemplated by the Prospectus.
 
        (j)  No Representative shall have advised the Company that the
    Registration Statement or Prospectus, or any amendment or supplement
    thereto, contains an untrue statement of fact which in the opinion of
    counsel for the Underwriters is material or omits to state a fact which in
    the opinion of counsel for the Underwriters is material and is required to
    be stated therein or is necessary to make the statements therein not
    misleading.
 
        (k) Prior to the Closing Date, the Company shall have furnished to the
    Representatives such further information, certificates and documents as they
    may reasonably request.
 
    If any of the conditions specified in this Section 6 shall not have been
fulfilled when and as required by this Agreement, or if any of the opinions and
certificates mentioned above or elsewhere in this Agreement shall not be
satisfactory in form and substance to the Representatives and their counsel,
this Agreement and all obligations of the Underwriters hereunder may be
cancelled at, or at any time prior to, the Closing Date by the Representatives.
Notice of such cancellation shall be given to the Company in writing, or by
telephone or facsimile transmission confirmed in writing.
 
    7.  CONDITIONS OF COMPANY'S OBLIGATIONS.  The obligations of the Company to
sell and deliver the Bonds are subject to the following conditions:
 
        (a) Prior to the Closing Date, no stop order suspending the
    effectiveness of the Registration Statement shall have been issued and no
    proceedings for that purpose shall have been instituted or, to the knowledge
    of the Company or the Representatives, threatened.
 
        (b) The order of the Public Service Commission of Wisconsin referred to
    in paragraph (l) of Section 1 shall be in full force and effect.
 
    If any of the conditions specified in this Section 7 shall not have been
fulfilled, this Agreement and all obligations of the Company hereunder may be
cancelled on or at any time prior to the Closing Date by the Company. Notice of
such cancellation shall be given to the Underwriters in writing or by telephone
or facsimile transmission confirmed in writing.
 
    8.  REIMBURSEMENT OF UNDERWRITERS' EXPENSES.  If the sale of the Bonds
provided for herein is not consummated because any condition to the obligations
of the Underwriters set forth in Section 6 hereof is not satisfied or because of
any refusal, inability or failure on the part of the Company to perform any
agreement herein or comply with any provision hereof, other than by reason of a
default by any of the Underwriters, the Company will reimburse the Underwriters
severally upon demand for all out-of-pocket expenses that shall have been
reasonably incurred by them in connection with the proposed purchase and sale of
the Bonds.
 
                                       9

    9.  INDEMNIFICATION.  (a) The Company agrees to indemnify and hold harmless
each Underwriter and each person who controls any Underwriter within the meaning
of either the Act or the Exchange Act against any and all losses, claims,
damages or liabilities, joint or several, to which they or any of them may
become subject under the Act, the Exchange Act or other federal or state
statutory law or regulation, at common law or otherwise insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of or
are based upon any untrue statement or alleged untrue statement of a material
fact contained in the registration statement for the registration of the Bonds
as originally filed or in any amendment thereof, or in the Prospectus or in any
amendment thereof or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading and
agrees to reimburse each such indemnified party for any legal or other expenses
reasonably incurred by them in connection with investing or defending any such
loss, claim, damage, liability or action; PROVIDED that the Company will not be
liable in any such case to the extent that any such loss, claim, damage or
liability arises out of or is based upon any such untrue statement or alleged
untrue statement or omission or alleged omission made therein in reliance upon
and in conformity with written information furnished to the Company by or on
behalf of any Underwriter through the Representatives specifically for use
therein and PROVIDED FURTHER that such indemnity with respect to a prospectus
included in the registration statement or any amendment thereto prior to the
supplementing thereof with the Prospectus Supplement shall not inure to the
benefit of any Underwriter (or any person controlling such Underwriter) from
whom the person asserting any such loss, claim, damage or liability purchased
the Bonds which are the subject thereof if such person was not sent or given a
copy of the Prospectus (but without the documents incorporated by reference
therein) at or prior to the confirmation of the sale of such Bonds to such
person in any case where such delivery is required by the Act and the untrue
statement or omission of a material fact contained in such prospectus was
corrected in the Prospectus in a timely manner and in sufficient quantities to
permit such delivery by the Underwriters. This indemnity agreement will be in
addition to any liability which the Company may otherwise have.
 
    (b) Each Underwriter severally agrees to indemnify and hold harmless the
Company, each of its directors, each of its officers who has signed the
Registration Statement and each person, if any, who controls the Company within
the meaning of either the Act or the Exchange Act, to the same extent as the
foregoing indemnity from the Company to the Underwriters but only with reference
to written information furnished to the Company by or on behalf of such
Underwriter through the Representatives specifically for use in the documents
referred to in the foregoing indemnity, and agrees to reimburse each such
indemnified party for any legal or other expenses reasonably incurred by them in
connection with investigating or defending any such loss, claim, damage,
liability or action. This indemnity agreement will be in addition to any
liability which any Underwriter may otherwise have.
 
    (c) Promptly after receipt by an indemnified party under this Section 9 of
notice of the commencement of any action, such indemnified party will, if a
claim in respect thereof is to be made against the indemnifying party under this
Section 9, notify the indemnifying party in writing of the commencement thereof;
but the omission to so notify the indemnifying party will not relieve it from
any liability which it may have to any indemnified party otherwise than under
this Section 9. In case any such action is brought against any indemnified
party, and it notifies the indemnifying party of the commencement thereof, the
indemnifying party will be entitled to participate therein, and, to the extent
that it may elect by written notice delivered to the indemnified party promptly
after receiving the aforesaid notice from such indemnified party, to assume the
defense thereof, with counsel satisfactory to such indemnified party; PROVIDED
THAT if the defendants in any such action include both the indemnified party and
the indemnifying party and the indemnified party shall have reasonably concluded
that there may be legal defenses available to it and/or other indemnified
parties which are different from or additional to those available to the
indemnifying party, the indemnified party, or parties shall have the right to
select separate counsel to assume such legal defenses and to otherwise
participate in the defense of such action on behalf of such indemnified party or
parties. Upon receipt of notice from the indemnifying party to such indemnified
party of its election to to assume the defense
 
                                       10

of such action and approval by the indemnifying party of counsel, the
indemnifying party will not be liable to such indemnifying party under this
Section 9 for any legal or other expenses subsequently incurred by such
indemnified party in connection with the defense thereof unless (i) the
indemnifying party shall have employed separate counsel in connection with the
assertion of legal defenses in accordance with the proviso to the next preceding
sentence (it being understood, however, that the indemnifying party shall not be
liable for the expenses of more than one separate counsel and one local counsel,
approved by the Representatives in the case of subparagraph (a), representing
the indemnifying parties under paragraphs (a) or (b), as the case may be, who
are parties to such action), (ii) the indemnifying party shall not have employed
counsel satisfactory to the indemnifying party to represent the indemnifying
party within a reasonable time after notice of commencement of the action or
(iii) the indemnifying party has authorized the employment of counsel for the
indemnifying party at the expense of the indemnifying party; and except that, if
clause (i) or (iii) is applicable, such liability shall be only in respect of
the counsel referred to in such clause (i) or (iii).
 
    (d) If the indemnification provided for in this Section 9 is unavailable or
insufficient to hold harmless an indemnified party under paragraph (a) or (b)
above in respect of any losses, claims, damages or liabilities (or actions in
respect thereof) referred to therein, then each indemnifying party shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages or liabilities (or actions in respect thereof)
in such proportion as is appropriate to reflect the relative benefits received
by the Company on the one hand and the Underwriters on the other hand from the
offering of the Bonds. If, however, the allocation provided by the immediately
preceding sentence is not permitted by applicable law or if the indemnified
party failed to give the notice required under paragraph (c) above, then each
indemnifying party shall contribute to such amount paid or payable by such
indemnified party in such proportion as is appropriate to reflect not only such
relative benefits but also the relative fault of the Company on the one hand and
the Underwriters on the other in connection with the statements or omissions
which resulted in such losses, claims, damages or liabilities (or actions in
respect thereof), as well as any other relevant equitable considerations. The
relative benefits received by the Company on the one hand and the Underwriters
on the other shall be deemed to be in the same proportion as the total net
proceeds from the offering (before deducting expenses) received by the Company
bear to the total underwriting discounts and commissions received by the
Underwriters, in each case as set forth in the table on the cover page of the
Prospectus Supplement. The relative fault shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a material
fact or the omission or alleged omission to state a material fact relates to
information supplied by the Company on the one hand or the Underwriters on the
other and the parties' relative intent, knowledge, access to information and
opportunity to correct or prevent such statement or omission. The Company and
the Underwriters agree that it would not be just and equitable if contributions
pursuant to this paragraph (d) were determined by pro rata allocation (even if
the Underwriters were treated as one entity for such purpose) or by any other
method of allocation which does not take account of the equitable considerations
referred to above in this paragraph (d). The amount paid or payable by an
indemnified party as a result of the losses, claims, damages or liabilities (or
actions in respect thereof) referred to above in this paragraph (d) shall be
deemed to include any legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any such action
or claim. Notwithstanding the provisions of this paragraph (d), no Underwriter
shall be required to contribute any amount in excess of the amount by which the
total price at which the Bonds underwritten by it and distributed to the public
were offered to the public exceeds the amount of any damages which such
Underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission or alleged omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11 (f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation. The Underwriters' obligations in this paragraph
(d) to contribute are several in proportion to their respective underwriting
obligations and not joint.
 
    (e) The obligations of the Company under this Section 9 shall be in addition
to any liability which the Company may otherwise have and shall extend, upon the
same terms and conditions, to
 
                                       11

each person, if any, who controls any Underwriter within the meaning of the Act;
and the obligations of the Underwriters under this Section 9 shall be in
addition to any liability which the respective Underwriters may otherwise have
and shall extend, upon the same terms and conditions, to each officer and
director of the Company and to each person, if any, who controls the Company
within the meaning of the Act.
 
    10.  DEFAULT BY AN UNDERWRITER.  (a) If any Underwriter shall default in its
obligation to purchase the Bonds which it has agreed to purchase hereunder (in
this Section called "Unpurchased Bonds"), the Representatives may in their
discretion arrange for themselves or any party or other parties to purchase such
Unpurchased Bonds on the terms contained herein. If within thirty-six hours
after such default by any Underwriter the Representatives do not arrange for the
purchase of such Unpurchased Bonds, then the Company shall be entitled to a
further period of thirty-six hours within which to procure another party or
other parties satisfactory to the Representatives to purchase such Unpurchased
Bonds on such terms. If the event that, within the respective prescribed period,
the Representatives notify the Company that they have so arranged for the
purchase of such Unpurchased Bonds, the Representatives or the Company shall
have the right to postpone the Closing Date for such Unpurchased Bonds for a
period of not more than seven days, in order to effect whatever changes may
thereby be made necessary in the Registration Statement or the Prospectus as
amended or supplemented, or in any other documents or arrangements, and the
Company agrees to file promptly any amendments or supplements to the
Registration Statement or the Prospectus which in the opinion of the
Representatives may thereby be made necessary. The term "Underwriter" as used in
this Agreement shall include any person substituted under this Section with like
effect as if such person had originally been a party to this Agreement with
respect to such Unpurchased Bonds.
 
    (b) If, after giving effect to any arrangements for the purchase of the
Unpurchased Bonds of a defaulting Underwriter or Underwriters by the
Representatives and the Company as provided in paragraph (a) above, the
aggregate principal amount of such Unpurchased Bonds which remains unpurchased
does not exceed one-eleventh of the aggregate principal amount of the Bonds,
then the Company shall have the right to require each non-defaulting Underwriter
to purchase the principal amount of Bonds which such Underwriter agreed to
purchase hereunder and, in addition, to require each non-defaulting Underwriter
to purchase its pro rata share (based on the principal amount of Bonds which
such Underwriter agreed to purchase hereunder) of the Unpurchased Bonds of such
defaulting Underwriter or Underwriters for which such arrangements have not been
made, but nothing herein shall relieve a defaulting Underwriter from liability
for its default.
 
    (c) If, after giving effect to any arrangements for the purchase of the
Unpurchased Bonds of a defaulting Underwriter or Underwriters by the
Representatives and the Company as provided in paragraph (a) above, the
aggregate principal amount of Unpurchased Bonds which remains unpurchased
exceeds one-eleventh of the aggregate principal amount of the Bonds, as referred
to in paragraph (b) above, if the Company shall not exercise the right described
in paragraph (b) above to require non-defaulting Underwriters to purchase
Unpurchased Bonds of a defaulting Underwriter or Underwriters, then this
Agreement shall thereupon terminate, without liability on the part of any
non-defaulting Underwriter or the Company, except for the expenses to be borne
by the Company and the Underwriters as provided in Section 5 hereof and the
indemnity and contribution agreements in Section 9 hereof; but nothing herein
shall relieve a defaulting Underwriter from liability for its default.
 
    11.  TERMINATION.  This Agreement shall be subject to termination in the
absolute discretion of the Representatives, by notice given to the Company prior
to delivery of and payment for all Bonds, if prior to such time (i) trading in
securities generally on the New York Stock Exchange shall have been suspended or
limited or minimum prices shall have been established on such Exchange, (ii) a
banking moratorium shall have been declared either by federal, Wisconsin or New
York State authorities, (iii) trading in any securities of the Company shall
have been suspended or halted, or (iv) there shall have occurred any outbreak or
exclamation of hostilities involving the United States or the declaration by the
United States of a war or national emergency or any other calamity or crisis the
effect of
 
                                       12

which on the financial markets in the United States is such as to make it, in
the judgment of the Representatives, impracticable or inadvisable to proceed
with the public offering or delivery of the Bonds on the terms and in the manner
contemplated in the Prospectus.
 
    12.  REPRESENTATIONS AND INDEMNITIES TO SURVIVE DELIVERY.  The respective
agreements, representations, warranties, indemnities and other statements of the
Company, of its officers and of the Underwriters set forth in or made pursuant
to the Agreement will remain in full force and effect, regardless of any
investigation made by or on behalf of any Underwriter or the Company or any of
their respective officers, directors or controlling persons within the meaning
of the Act, and will survive delivery of and payment for the Bonds. The
provisions of Sections 5, 8 and 9 hereof shall survive the termination or
cancellation of this Agreement.
 
    13.  NOTICES.  All communications hereunder will be in writing and, if sent
to the Representatives, will be mailed, delivered or transmitted and confirmed
to them at their address set forth for that purpose in Schedule I hereto or, if
sent to the Company, will be mailed, delivered or transmitted and confirmed to
it at 100 North Barstow Street, Eau Claire, Wisconsin 54701, attention
Secretary.
 
    14.  SUCCESSORS.  This Agreement will inure to the benefit of and be binding
upon the parties hereto and their respective successors and the officers and
directors and controlling persons referred to in Section 9 hereof, and no other
person will have any right or obligation hereunder.
 
    15.  APPLICABLE LAW.  This Agreement will be governed by and construed in
accordance with the laws of the State of Wisconsin.
 
    16.  COUNTERPARTS.  This Agreement may be executed in counterparts, all of
which, taken together, shall constitute a single agreement among the parties to
such counterparts.
 
    17.  REPRESENTATION OF THE UNDERWRITERS.  The Representatives represent and
warrant to the Company that they are authorized to act as the representatives of
the Underwriters in connection with this financing and that the Representatives'
execution and delivery of this Agreement and any action under this Agreement
taken by such Representatives will be binding upon all Underwriters.
 
    18.  OTHER.  Time shall be of the essence for all purposes of this
Agreement. As used herein, "business day" shall mean any day when the
Commission's office in Washington D.C. is open for business.
 
                                       13

    If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us the enclosed duplicate hereof, whereupon this
letter and your acceptance shall represent a binding agreement among the Company
and the several Underwriters.
 
                                        Very truly yours,
                                        NORTHERN STATES POWER COMPANY
 
                                        By          /s/ NEAL A. SIIKARLA
                                             -----------------------------------
                                                          Treasurer
 
The foregoing Agreement is hereby
  confirmed and accepted as of the
  date first above written.
 
BEAR, STEARNS & CO. INC.
 
By /s/ LEWIS A. SACHS
   -----------------------------------
   FOR ITSELF OR THEMSELVES AND AS
   REPRESENTATIVES OF THE SEVERAL
   UNDERWRITERS, IF ANY, NAMED IN
   SCHEDULE II TO THE FOREGOING
   AGREEMENT.
 
                                       14

    If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us the enclosed duplicate hereof, whereupon this
letter and your acceptance shall represent a binding agreement among the Company
and the several Underwriters.
 
                                          Very truly yours,
                                          NORTHERN STATES POWER COMPANY
                                          By ___________________________________
                                                         Treasurer
 
The foregoing Agreement is hereby
  confirmed and accepted as of the
  date first above written.
 
GOLDMAN, SACHS & CO.
 
By ___________________________________
   FOR ITSELF OR THEMSELVES AND AS
   REPRESENTATIVES OF THE SEVERAL
   UNDERWRITERS, IF ANY, NAMED IN
   SCHEDULE II TO THE FOREGOING
   AGREEMENT.
 
                                       14

    If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us the enclosed duplicate hereof, whereupon this
letter and your acceptance shall represent a binding agreement among the Company
and the several Underwriters.
 
                                          Very truly yours,
                                          NORTHERN STATES POWER COMPANY
                                          By ___________________________________
                                                         Treasurer
 
The foregoing Agreement is hereby
  confirmed and accepted as of the
  date first above written.
 
MERRILL LYNCH & CO.
 
By ___________________________________
   FOR ITSELF OR THEMSELVES AND AS
   REPRESENTATIVES OF THE SEVERAL
   UNDERWRITERS, IF ANY, NAMED IN
   SCHEDULE II TO THE FOREGOING
   AGREEMENT.
 
                                       14

    If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us the enclosed duplicate hereof, whereupon this
letter and your acceptance shall represent a binding agreement among the Company
and the several Underwriters.
 
                                          Very truly yours,
                                          NORTHERN STATES POWER COMPANY
                                          By ___________________________________
                                                         Treasurer
 
The foregoing Agreement is hereby
  confirmed and accepted as of the
  date first above written.
 
MORGAN STANLEY & CO. INCORPORATED
 
By ___________________________________
   FOR ITSELF OR THEMSELVES AND AS
   REPRESENTATIVES OF THE SEVERAL
   UNDERWRITERS, IF ANY, NAMED IN
   SCHEDULE II TO THE FOREGOING
   AGREEMENT.
 
                                       14

                                   SCHEDULE I
 
Underwriting Agreement dated December 12, 1996
 
Registration Statement No. 333-03173
 
Representatives and Addresses:   Bear, Stearns & Co. Inc.
                                 245 Park Avenue
                                 New York, New York 10167
 
Bonds:
 
      Designation:        First Mortgage Bonds, Series due December 1, 2026,
7 3/8%
 
  Principal Amount:    $65,000,000
 
  Supplemental Indenture dated as of December 1, 1996
 
  Date of Maturity:    December 1, 2026
 
      Interest Rate:    7 3/8% per annum, payable June 1 and December 1 of each
                        year, commencing June 1, 1997
 
      Purchase Price:    99.017% of the principal amount thereof, plus accrued
                         interest, if any, from December 1, 1996 to the date of
                         payment and delivery.
 
      Public Offering Price:    99.587% of the principal amount thereof, plus
                                accrued interest, if any, from December 1, 1996
                                to the date of payment and delivery.
 
Payment to be made in federal (same day) funds.    _X_ Yes    ____ No
 
Closing Date and Location:   December 19, 1996
                             Northern States Power Company
                             414 Nicollet Mall
                             Minneapolis, MN 55401
 
Office for Delivery of Bonds:   The Depository Trust Company
                                55 Water Street
                                New York, New York 10041
 
Office for Payment of Bonds:   Northern States Power Company
                               414 Nicollet Mall
                               Minneapolis, MN 55401
 
Office for Checking of Bonds:   The Depository Trust Company
                                55 Water Street
                                New York, New York 10041
 
                                       15

                                  SCHEDULE II
 


                                                                                                      PRINCIPAL
                                                                                                      AMOUNT OF
NAME OF UNDERWRITER                                                                                     BONDS
                                                                                                    --------------
                                                                                                 
Bear, Stearns & Co. Inc...........................................................................  $   65,000,000
                                                                                                    --------------
            Total.................................................................................  $   65,000,000
                                                                                                    --------------
                                                                                                    --------------

 
                                       16

                                                                       EXHIBIT A
 
                     FORM OF OPINION OF JOHN P. MOORE, JR.
RE: $65,000,000 PRINCIPAL AMOUNT OF FIRST MORTGAGE BONDS, SERIES DUE DECEMBER 1,
                                  2026, 7 3/8%
           OF NORTHERN STATES POWER COMPANY, A WISCONSIN CORPORATION.
 
Gentlemen:
 
    For the purpose of rendering this opinion, I have examined the proceedings
taken by Northern States Power Company, a Wisconsin corporation, herein called
the "Company," with respect to the issue and sale by the Company of $65,000,000
principal amount of First Mortgage Bonds, Series due December 1, 2026, 7 3/8%
herein called the "Bonds." In connection therewith, I have participated in the
preparation of the proceedings for the issuance and sale of the Bonds, including
the Underwriting Agreement dated December 12, 1996 (the "Underwriting
Agreement") between you and the Company relating to your purchase of the Bonds,
and have either participated in the preparation of or examined the Trust
Indenture dated April 1, 1947, the 12 Supplemental Trust Indentures thereto, the
Supplemental and Restated Trust Indenture dated March 1, 1991, and the
Supplemental Trust Indenture dated as of December 1, 1996, creating the Bonds,
all from the Company to Firstar Trust Company (formerly known as First Wisconsin
Trust Company), as Trustee (which Trust Indenture and Supplemental Trust
Indentures are herein collectively called the "Indenture"). I have also
participated in the preparation of or examined the registration statement and
the accompanying prospectuses and any supplements thereto, as filed under the
Securities Act of 1933, as amended (herein called the "Act"), with respect to
the Bonds. The terms "Registration Statement" and "Prospectus" as used herein
shall have the meanings ascribed to such terms by the Underwriting Agreement. My
examination has extended to all statutes, records, instruments, and documents
which I have deemed necessary to examine for the purposes of this opinion.
 
    I am of the opinion that:
 
        1.  The Company is a legally existing corporation under the laws of the
    State of Wisconsin; has corporate power, right, and authority to do business
    and to own property in the State of Wisconsin in the manner and as set forth
    in the Prospectus; has no "significant subsidiaries" within the meaning of
    Rule 1.02(v) of Regulation S-X under the Act; and has corporate power,
    right, and authority to make the Indenture and issue and sell the Bonds;
 
        2.  The authorized capital stock of the Company is as set forth in the
    Prospectus and all of the issued shares of capital stock of the Company have
    been duly authorized and validly issued, are fully paid and non-assessable
    and are owned by Northern States Power Company, a Minnesota corporation;
 
        3.  The Underwriting Agreement has been duly authorized, executed, and
    delivered by the Company and is a valid and binding obligation of the
    Company, except to the extent that the provisions for indemnities in the
    Underwriting Agreement may be held to be unenforceable as against public
    policy.
 
        4.  The Indenture has been duly authorized by appropriate corporate
    proceedings on the part of the Company, has been duly executed and delivered
    and constitutes a legal, valid, and binding instrument enforceable in
    accordance with its terms, except as the provisions of the United States
    Bankruptcy Code may affect the validity of the lien thereof with respect to
    proceeds, products, rents, issues, or profits realized, and additional
    property acquired, after the commencement of a case under said Code, and
    except as enforcement of the provisions of the Indenture may be limited by
    the laws of the States of Michigan and Wisconsin (where property covered
    thereby is located) affecting the remedies for the enforcement of the
    security provided in
 
                                       1

    the Indenture (which states' laws do not in my opinion make such remedies
    inadequate for realization of the benefits of such security) or except as
    the same may be limited by bankruptcy or insolvency laws or other similar
    laws; and the Indenture constitutes a valid mortgage effective to create a
    lien for the security of the Bonds upon the property now owned by the
    Company therein specifically described as subject to the lien thereof,
    except as otherwise provided therein with respect to specific property or
    classes of property;
 
        5.  The Indenture is in proper form, conforming to the laws of the State
    of Wisconsin, to give and create the lien which it purports to create and
    has been and now is duly and properly recorded or filed in all places in the
    State of Wisconsin necessary to effectuate the lien of the Indenture.
 
        6.  The Company has good and valid title to all real and fixed property
    and leasehold rights described or enumerated in the Indenture (except such
    properties as have been released from the lien thereof in accordance with
    the terms thereof), subject only to: (A) taxes and assessments not yet
    delinquent; (B) the lien of the Indenture; (C) as to parts of the Company's
    property, certain easements, conditions, restrictions, leases, and similar
    encumbrances which do not affect the Company's use of such property in the
    usual course of its business, certain minor defects in titles which are not
    material, defects in titles to certain properties which are not essential to
    the Company's business, and mechanics' lien claims being contested or not of
    record or for the satisfaction or discharge of which adequate provision has
    been made by the Company pursuant to the Indenture. This opinion does not
    cover titles to easements for water flowage purposes or rights of way for
    electric and or gas transmission and distribution facilities, but the
    Company has the power of eminent domain in the states in which it operates
    and such power may be utilized by the Company to cure defects in title to
    its real property;
 
        7.  The Bonds are secured by and entitled to the benefits of the
    Indenture equally and ratably, except as to sinking fund provisions, with
    all other bonds duly issued and outstanding under the Indenture by a valid
    and direct first mortgage lien of the Indenture on all of the real and fixed
    properties, leasehold rights, franchises, and permits now owned by the
    Company, subject only to the exceptions set forth in Paragraph 6 above;
 
        8.  The Bonds also are secured equally and ratably, except as to sinking
    fund provisions, with all other bonds duly issued and outstanding under the
    Indenture by a valid and direct first mortgage lien (subject to Permitted
    Encumbrances as defined in the Indenture) on all real and fixed property
    hereafter acquired by the Company in conformity with the terms of the
    Indenture, except as the United States Bankruptcy Code may affect the
    validity of the lien of such Indenture on property acquired after the
    commencement of a case under such Code, except as to the prior lien of the
    Trustee under the Indenture in certain events specified therein, and except
    as otherwise provided in the Indenture in the case of consolidation, merger,
    or transfer of all the mortgaged and pledged property as an entirety;
 
        9.  The issuance of the Bonds in accordance with the terms of the
    Indenture and the sale and delivery thereof pursuant to the provisions of
    the Underwriting Agreement has been duly authorized by the Company; the
    statements made under the captions "Description of New Bonds" and
    "Supplemental Description of Offered Bonds" in the Prospectus, insofar as
    they purport to summarize provisions of documents specifically referred to
    therein, fairly present the information called for with respect thereto by
    Form S-3; the Bonds are in due legal form, constitute legal, valid, and
    binding obligations of the Company, and (subject to the qualification
    expressed in Paragraph 4 above with respect to the validity and
    enforceability of certain of the provisions of the Indenture) are
    enforceable in accordance with their terms;
 
        10. The consummation of the transactions contemplated in the
    Underwriting Agreement and the fulfillment of the terms thereof and
    compliance by the Company with all the terms and provisions of the Indenture
    will not result in a breach of any of the terms or provisions of, or
    constitute a default under, any indenture, mortgage, deed of trust or other
    agreement or instrument known to me to which the Company is a party or by
    which it is bound, or the Restated
 
                                       2

    Articles of Incorporation, as amended, or By-laws of the Company or, to the
    best of my knowledge, any order, rule or regulation applicable to the
    Company of any court or of any federal or state regulatory body or
    administrative agency or other governmental body having jurisdiction over
    the Company or its property;
 
        11. The Registration Statement has become effective under the Act. The
    Prospectus Supplement (as defined in the Underwriting Agreement) has been
    filed pursuant to Rule 424(b) under the Act and no proceedings for a stop
    order have been instituted or to my knowledge are pending or threatened
    under Section 8(d) of the Act; the Public Service Commission of Wisconsin
    has issued its order authorizing the issuance and sale of the Bonds; the
    Indenture has been duly qualified under the Trust Indenture Act of 1939, as
    amended; and no further approval of, authorization, consent certificate or
    order of any governmental body, federal, state or other, is required in
    connection with the issuance and sale of the Bonds by the Company to you as
    provided in the Underwriting Agreement, except as may be required by "blue
    sky" or state securities laws;
 
        12. At the time the Registration Statement became effective and at the
    date of the Underwriting Agreement, the Registration Statement (other than
    the financial statements and supporting schedules included therein, as to
    which no opinion is rendered) complied as to form in all material respects
    with the requirements of the Act, the Trust Indenture Act of 1939, as
    amended, and the rules and regulations thereunder;
 
        13. I do not know of any legal or governmental proceedings required to
    be described in the Prospectus which are not described as required, nor of
    any contracts or documents of a character required to be described in the
    Registration Statement or Prospectus or to be filed as exhibits to the
    Registration Statement which are not described and filed as required.
 
        14. The Company has all necessary power under statutory provisions and
    permits to use its operating electric and gas properties; and
 
        15. All statements contained in the Registration Statement and
    Prospectus purporting to set forth my opinion or to be based upon my opinion
    correctly set forth my opinion on said respective matters.
 
    In the course of my participation in the preparation of the Registration
Statement and Prospectus I made investigations as to the accuracy of certain of
the statements of fact contained therein, I discussed other matters with
officers, employees and representatives of the Company, and I examined various
corporate records and data. While I do not pass upon and do not assume
responsibility for and shall not be deemed to have independently verified the
accuracy, completeness or fairness of the Registration Statement or the
Prospectus (except as to matters set forth in Paragraphs 12 and 15 above),
nothing has come to my attention that would lead me to believe that the
Registration Statement at the time it became effective or at the date of the
Underwriting Agreement contained an untrue statement of a material fact or
omitted to state a material fact required to be stated therein or necessary to
make the statements therein not misleading or that the Prospectus at the date of
the Underwriting Agreement or as of the date hereof contained an untrue
statement of a material fact or omitted to state a material fact necessary in
order to make the statements therein, in the light of the circumstances under
which they were made, not misleading.
 
    In giving my opinion under Paragraph 6 above, I have relied upon
examinations of abstracts of titles to properties of the Company, said abstracts
bearing various dates, and nothing has come to my attention which would lead me
to believe that anything has occurred since the dates of the abstracts
 
                                       3

which would adversely affect the titles shown on the abstracts. In giving
opinions as to titles to property of the Company, I also, in certain instances,
relied upon the opinion of other counsel employed or retained by the Company to
render opinions in respect thereto.
 
                                          Respectfully submitted,
 
                                          By ___________________________________
                                                     John P. Moore, Jr.
                                                       General Counsel
 
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