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                            NORTHWESTERN CORPORATION


                                  COMPREHENSIVE
                              EMPLOYMENT AGREEMENT
                                       AND
                              EQUITY PARTICIPATION
                                  PROGRAM FOR

                                MICHAEL J. HANSON






                                  MARCH 1, 2001
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                                    AGREEMENT
                                    ---------

         This COMPREHENSIVE EMPLOYMENT AGREEMENT AND EQUITY PARTICIPATION
PROGRAM ("Agreement"), dated as of March 1, 2001, is entered into by and between
Michael J. Hanson, an individual ("EXECUTIVE"), and NorthWestern Corporation
("NorthWestern") and supersedes any prior Employment Agreement between Executive
and NorthWestern.

AGREEMENT:

         1. EMPLOYMENT BY NORTHWESTERN AND DURATION.

         a. FULL TIME AND BEST EFFORTS. Subject to the terms set forth herein,
NorthWestern agrees to employ Executive to provide management services for
NorthWestern as President and Chief Executive Officer of NorthWestern's wholly
owned subsidiary NorthWestern Services Group, Inc. and of NorthWestern's utility
division, NorthWestern Public Service, and Executive hereby accepts such
employment. During the term of his employment with NorthWestern, Executive will
devote his best efforts and substantially all of his business time and attention
to the performance of his duties hereunder, except for vacation periods as set
forth herein and reasonable absences due to injury, illness as permitted by
NorthWestern's general policies. Executive may participate in the affairs of any
governmental, educational or other charitable institution, engage in
professional speaking and writing activities and serve as a member of the board
of directors of civic, private or publicly held corporations or entities, so
long as NorthWestern's Chief Executive Officer, in good faith, does not
determine that such activities unreasonably interfere with Executive's
obligations under this Agreement, and Executive shall be entitled to retain all
fees, royalties and other compensation derived


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from such activities in addition to the compensation and other benefits payable
to him under this Agreement.

         b. DUTIES. Executive shall serve as President and Chief Executive
Officer and shall perform such duties as are customarily associated with his
current title, consistent with the By-Laws of NorthWestern and as required by
NorthWestern's Board of Directors (the "Board").

         c. NORTHWESTERN POLICIES. The employment relationship between the
parties shall be governed by the general employment policies and practices of
NorthWestern, including without limitation those related to code of conduct,
confidential information, avoidance of conflicts, and sexual and other unlawful
harassment (collectively, "NorthWestern Policies") except that when the terms of
this Agreement differ from or are in conflict with NorthWestern's general
employment policies or practices, this Agreement shall control.

         d. DURATION. The term of employment hereunder shall commence March 1,
2001, and end on February 28, 2005, and, subject to the termination provisions
hereinafter contained, such termination date shall be automatically extended for
an additional period of one (1) year on each March 1st, unless either
NorthWestern or Executive notifies the other party of the intent not to extend
such termination date, such notice to be given in writing not less than ninety
(90) days prior to the automatic renewal date.

         e. LOCATIONS OF PERFORMANCE. Executive shall perform his principal
services for NorthWestern in the vicinity of Sioux Falls or Huron, South Dakota.
The parties acknowledge, however, that Executive will be required to undertake
reasonable travel to NorthWestern's market areas in connection with the
performance of his duties hereunder.



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         2. COMPENSATION AND BENEFITS.

         a. SALARY. Executive shall receive, for services to be rendered
hereunder, annual base compensation included in Schedule A hereto.

         b. BONUS. Executive shall receive such discretionary bonuses, if any,
as the Board in its sole discretion and from time to time may deem appropriate.

         c. SHORT-TERM INCENTIVE PLANS. Executive shall be eligible to
participate in the Short-Term Incentive Plans on the terms and conditions set
forth in Schedule B attached hereto.

         d. LONG-TERM EQUITY PLANS. Executive shall be eligible to participate
in the Long-Term Equity Plans for NorthWestern on the terms and conditions set
forth in Schedule C attached hereto.

         e. PARTICIPATION IN BENEFIT PLANS. During the term hereof, Executive
shall be entitled to participate in the plans and programs as set forth in
Schedule D attached hereto, or those established by NorthWestern hereafter as a
substitute for or alternative to one or more Schedule D plans so long as any
such plan provides Executive (and covered family members or dependants) with
substantially equivalent benefits in all material respects (hereinafter,
"Equivalent Coverage") (all such pensions, plans or programs, including without
limitation, any pension, retirement benefit, supplemental pension, supplemental
income plan, whether qualified, non-qualified, or whether fully, partially or
unfunded, shall be collectively referred to herein as "Benefit Plans").
Executive shall be eligible to participate in only one, not both, of the plans
in question. NorthWestern may, in its sole discretion and from time to time,
establish additional senior management benefit programs as it deems appropriate,
and Executive shall be entitled to participate in such additional senior
management benefit programs on the same basis as other senior executives of
NorthWestern.



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         f. CHANGE IN CONTROL. Executive shall be entitled to certain special
rights under the Change in Control and Major Transaction provisions as set forth
in paragraph 7 of this Agreement.

         g. WITHHOLDING. All payments and benefits under this paragraph 2 for
which withholding is required under applicable law will be made subject to the
required withholding.

         h. HOLD HARMLESS. NorthWestern shall hold Executive harmless against
any and all losses that he may directly or indirectly incur as a result of (I)
any third party claims brought against Executive (other than by any taxing
authority) with respect to NorthWestern's performance of, or (II) NorthWestern's
failure to perform any commitment made to Executive, in this paragraph 2.

         3. REASONABLE BUSINESS EXPENSES AND SUPPORT.

         Executive shall be reimbursed for documented and reasonable business
expenses in connection with the performance of his duties hereunder.

         4. TERMINATION OF EMPLOYMENT.

         The date on which Executive's employment by NorthWestern ceases, under
any of the following circumstances, shall be defined herein as the "Termination
Date."

         a. TERMINATION WITHOUT CAUSE.

                  i. TERMINATION PAYMENT. Upon notice to Executive,
NorthWestern's Board may terminate Executive's employment with NorthWestern at
will at any time for any reason and without "Cause," as defined below. In the
event Executive's employment is terminated by NorthWestern without Cause,
Executive shall receive payment for all accrued salary and vacation time through
the Termination Date, and NorthWestern shall pay to Executive within 90 days of
the Termination Date a lump sum, in cash, equal to the sum of:



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         (1) the "Term Factor" multiplied by the sum of (i) Executive's annual
base salary in effect as of the Termination Date, (ii) the higher of the most
recent annual bonuses and incentive compensation provided under paragraphs 2.b.
and 2.c. and the average of the annual bonuses and incentive compensation
provided to Executive under any annual incentive compensation programs,
including those under paragraph 2.b. and 2.c. with respect to the three calendar
years preceding the calendar year containing the Termination Date, all as if
fully vested, and (iii) an amount equal to the higher of the fair market value,
determined as provided herein, of the sum of the most recent annual stock option
grants and the other long-term incentive awards provided under paragraph 2.d.
and the average of the fair market value of the annual stock option grants
provided under paragraph 2.d. with respect to the three calendar years preceding
the calendar year containing the Termination Date (in each case, subject to
paragraph (3) below, fair market value shall be determined in a manner
consistent with past practice of the Board's Nominating and Compensation
Committee), all as if fully vested; PLUS

         (2) an amount equal to the sum of: (i) the "Term Factor" multiplied by
the higher of the fair market value of the most recent acquisition return and
improved return private equity interests provided under paragraph 2.d. and the
average of the fair market value of the acquisition return and improved return
private equity interests provided under paragraph 2.d. with respect to the three
calendar years preceding the calendar year containing the Termination Date
(including for purposes of this calculation amounts allocated to Executive in
respect of annual acquisition returns, annual appreciation from improved returns
or similar items under any private equity investment partnership, limited
liability company or other entity that has invested in NorthWestern or any of
its affiliates (collectively, a "Private Equity Entity")), all as if fully
vested; (ii) an amount equal to the fair market value of all long term private
equity interests provided under


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paragraph 2.d. (without duplication for long-term private equity interests held
by Executive in any Private Equity Entity) all as if fully vested; and (iii) the
value of Executive's interest in all Benefit Plans under paragraph 2.e. as if
fully vested (and giving effect to the provisions of paragraph 4.f.), payable in
a lump sum (subject to Executive's right to elect a deferral) as set forth in
paragraph 4.g. (without duplication of the value of Executive's interest in any
such plans for which Executive retains his contractual rights to future benefits
in lieu of a current or deferred lump sum payment). Payments will be made
directly from the Benefit Plans only to the extent allowed for by law and
provided for by such Benefit Plans.

     (3) for purposes of the foregoing calculations: (i) the "Term Factor" shall
equal the number of full and partial years (prorated to the nearest month) in
the remaining term of this Agreement as specified in paragraph 1.d.; (ii) the
determination of fair market value of any interest or amount shall be determined
in each case, without a discount for minority interest, lack of liquidity or
other factor by a nationally recognized investment banking firm reasonably
acceptable to NorthWestern and Executive at the cost of NorthWestern, (iii) the
most recent annual amount or the average amount of any item calculated, as the
case may be, shall include the amounts payable in respect of, or the fair market
value of the private equity interests created with respect to, the acquisitions
and investments made in the current year, assuming the immediate and full
vesting thereof, if the inclusion of such amounts or fair market value would
result in a higher payment, or, at Executive's option, any stock options may
continue to be held by Executive; and (iv) any amounts payable under
sub-paragraph (2) above shall be grossed-up to such higher amount that results
in the net amount retained by Executive being equivalent to the amount that
Executive would have retained had such payments


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been subject to the then applicable income tax rate on long-term capital gains
(an example of the method of calculation of these amounts is set forth on
Schedule E).

                  ii. FUNDAMENTAL CHANGES. In the event of the occurrence of a
fundamental change as defined herein below, Executive may terminate his
employment at any time after providing NorthWestern with both notice of the
conduct Executive alleges to be a fundamental change and with a reasonable
period of time not to exceed thirty (30) days during which NorthWestern may cure
such fundamental change. "Fundamental Change" shall be defined as any of the
following:

         (a) Material diminution in Executive's duties, authority, or
responsibilities, or a reduction in compensation and/or benefits as provided
herein or a significant adverse change in the nature of Executive's reporting
responsibilities (including, without limitation, a change in reporting that
would indicate a diminution in Executive's duties, authority and
responsibilities);

         (b) NorthWestern moves Executive's primary office more than thirty (30)
miles from its location on the Effective Date or requires Executive to travel
for business to an extent materially greater than Executive's customary travel
obligations, in each case without Executive's consent;

         (c) A Change in Control or Major Transaction has occurred; or

         (d) A material breach of this Agreement by NorthWestern.

                  Executive's right to terminate Executive's employment due to a
Fundamental Change shall not be affected by Executive's incapacity due to
physical or mental illness, and Executive's continued employment shall not
constitute consent to, or a waiver of rights with respect to, any Fundamental
Change. A termination by Executive in the event of a Fundamental Change shall be
treated as a NorthWestern termination without Cause, and Executive shall be
entitled to the termination payments


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as provided in paragraph 4.a.i. of this Agreement, except that, in the event of
a Change in Control or Major Transaction, the "Term Factor" shall equal the
number of full and partial years (prorated to the nearest month) in the
remaining term of this Agreement as specified in paragraph 1.d. plus one year.

         b. TERMINATION FOR CAUSE.

                  i. TERMINATION PAYMENTS. NorthWestern's Board may terminate
Executive's employment with NorthWestern at any time for "Cause" as defined
below, upon notice to Executive in the manner set forth below in paragraph
4.b.ii. In the event that Executive's employment is terminated for Cause,
Executive shall receive payment for all accrued salary and vacation time through
the Termination Date, which in this event shall be the date upon which notice of
termination is given. Executive shall also receive any vested compensation
benefits or incentives as provided under the benefit programs provided pursuant
paragraphs 2.c., 2.d. and 2.e. hereof, including NorthWestern Stock Options and
in Private Equities in which Executive has an interest, as included in Schedules
B and C, based on the fair market value of the interest as determined under the
provisions of paragraph 4.a.i.(3). In addition, Executive's interest in all
vested Benefit Plans under paragraph 2.e. shall be payable in either a lump sum
or deferral pursuant to paragraph 4.g. NorthWestern shall pay all amounts due
under this paragraph 4.b.i. within 90 days of the Termination Date and shall
have no further obligation to pay severance of any kind nor to make any payment
in lieu of notice.

                  ii. DEFINITION OF CAUSE. For purposes of this Agreement, the
termination of Executive's employment shall be deemed to have been for "Cause"
only if termination of his employment shall have been the result of: (i) the
willful engaging by Executive in dishonest or fraudulent conduct intended to
result, directly or indirectly, in demonstrable and material financial or
economic harm to NorthWestern, (ii) gross


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negligence by Executive in the performance of Executive's duties with
NorthWestern, or (iii) intentional or grossly negligent failure, on a repeated
basis, to adhere in material respects to the terms and provisions of the
NorthWestern Policies in such a way as to have an adverse impact on
NorthWestern's reputation. Notwithstanding the foregoing, for purposes hereof
(A) Executive shall not be deemed to have been terminated for Cause under either
clause (i) or (ii) above unless and until (1) there shall have been delivered to
Executive a notice of termination and a certified copy of a resolution of the
Board duly adopted by not less than three-quarters (3/4) of the entire
membership of the Board (other than Executive if he is a member of the Board at
the time) at a meeting called and held for that purpose and at which Executive,
together with Executive's counsel, was given the opportunity to be heard,
finding that, in the good faith opinion of the Board, Executive was guilty of
conduct set forth above based on reasonable evidence, specifying the particulars
thereof in detail, and (2) Executive has failed to cure, within thirty (30) days
of the Board's determination, any conduct reasonably capable of being cured, and
(B) no act, or failure to act, on Executive's part shall be deemed "willful"
unless done, or omitted to be done, by Executive not in good faith and without
reasonable belief that Executive's act, or failure to act, was in the best
interest of NorthWestern.

         c. VOLUNTARY TERMINATION PRIOR TO A FUNDAMENTAL CHANGE. Executive may
terminate his employment with NorthWestern at any time prior to the occurrence
of a Fundamental Change upon written notice to NorthWestern in the manner set
forth in paragraph 4.b.ii. In the event of such termination of employment by
Executive, he shall be entitled to the termination payments as provided in
paragraph 4.b.i.

         d. TERMINATION UPON DISABILITY. NorthWestern may terminate Executive's
employment in the event Executive suffers a disability ("Disability") that
renders


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Executive unable to perform the essential functions of his position, even with
reasonable accommodation, for nine (9) months within any twelve (12) month
period and within thirty (30) days after written notice of termination is
thereafter given by NorthWestern Executive shall not have returned to
substantially full-time performance of Executive's duties. Commencing on the
Termination Date, which in this event shall be the date upon which notice of
termination is given, NorthWestern shall pay Executive within 90 days of the
Termination Date an amount that is equal to all compensation, incentive and
private equity programs and other benefit programs of Executive under paragraph
2 of this Agreement for a period equal to the Term Factor calculated in the same
fashion as the calculation of termination benefits provided under paragraph
4.a.i. (an example of the method of calculation of these amounts is set forth on
Schedule E).

         e. TERMINATION UPON DEATH. If Executive dies prior to the expiration of
the term of this Agreement, NorthWestern shall pay Executive's representative
within 90 days of the Termination Date an amount that is equal to the
termination benefits payable to Executive as provided under paragraph 4.d. (an
example of the method of calculation of these amounts is set forth on Schedule
E).

         f. BENEFITS UPON TERMINATION.

                  i. EXTENSION OF BENEFITS. Upon the termination of this
Agreement, (except in the event of a termination for Cause described in
paragraph 4.b.), all benefits provided under paragraph 2.e. hereof shall be
extended, to the extent permitted by NorthWestern's insurance policies and
benefit plans, for, in the case of a termination under paragraph 4.a., 4.d. or
4.e., a period equal to the Term Factor. If NorthWestern is unable to continue
Executive's benefits (including covered family members and dependants) for the
Term Factor as required, NorthWestern will promptly purchase Equivalent Coverage
and will reimburse Executive for any Federal or state income tax


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liabilities associated with the benefits received under such Equivalent
Coverage. In each such case, for purposes of determining the amount of benefit
payable to Executive under any such plan, Executive shall be given credit for
additional years of service equal to the Term Factor at the compensation level
in effect immediately prior to the Termination Date. If Executive would have
become entitled to benefits under NorthWestern's post-retirement health care or
life insurance plans had his employment terminated at any time during the Term
Factor following the Termination Date, NorthWestern shall pay such benefits to
Executive commencing on the later of (a) the date that such coverage would have
first become available and (b) the date the benefits described above in this
paragraph terminate.

         ii. Additional Benefit Plan Credits.

         (A) In addition to the retirement benefits to which Executive is
entitled under each Benefit Plan that is a defined benefit plan or any successor
plan thereto, NorthWestern shall pay Executive a lump sum amount, in cash, equal
to the excess of (x) the actuarial equivalent of any applicable retirement
pension (taking into account any early retirement subsidies associated therewith
and determined as a straight life annuity commencing at Normal Retirement Age or
any earlier date, but in no event earlier than the expiration of the Term Factor
following the Termination Date, whichever annuity the actuarial equivalent of
which is greatest) which Executive would have accrued under the terms of each
such Benefit Plan, determined as if Executive were fully vested thereunder and
had accumulated (after the Termination Date) additional years of service
thereunder equal to the Term Factor and had been credited under each such
Benefit Plan during such period with Executive's compensation during the twelve
(12) months immediately preceding the Termination Date, over (y) the actuarial
equivalent of the retirement pension (taking into account any early retirement
subsidies


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associated therewith and determined as a straight life annuity commencing at
Normal Retirement Age or any earlier date, but in no event earlier than the
Termination Date, whichever annuity the actuarial equivalent is greatest) which
Executive had accrued pursuant to the provisions of each such Benefit Plan as of
the Termination Date. For purposes hereof, "actuarial equivalent" shall be
determined using the same methods and assumptions utilized under each of the
Benefit Plans, as applicable, immediately prior to the Termination Date (without
regard to any amendment of such methods and assumptions made subsequent thereto,
which amendment would result in a reduction in payments hereunder. To the extent
additional actuarial assumptions are required for the purpose of calculating
benefits under this paragraph, such assumptions shall be as reasonably agreed by
the parties.

         (B) In addition to the retirement benefits to which Executive is
entitled under each Benefit Plan that is a defined contribution plan or any
successor plan thereto, NorthWestern shall pay Executive a lump sum amount, in
cash, equal to the excess of (x) any account balance (assuming employer
contributions and investment returns continue at the rate in effect on the
Termination Date) which would have been credited to Executive under the Benefit
Plan, determined as if Executive were fully vested thereunder and had
accumulated (after the Termination Date) additional years of service thereunder
equal to the Term Factor and had been credited under each such Benefit Plan
during such period with Executive's compensation during the twelve (12) months
immediately preceding the Termination Date, over (y) the account balance
credited to Executive under the Benefit Plan as of the Termination Date.

         (C) In addition to the retirement benefits to which Executive is
entitled under each Benefit Plan that is not a defined benefit plan or a defined
contribution plan (whether funded by insurance or otherwise), NorthWestern shall
pay Executive a lump


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sum amount, in cash, equal to the excess of (x) the retirement benefit (assuming
employer contributions and investment returns continue at the rate in effect on
the Termination Date) Executive would have received under the Benefit Plan,
determined as if Executive were fully vested thereunder and had accumulated
(after the Termination Date) additional years of service thereunder equal to the
Term Factor and had been credited under each such Benefit Plan during such
period with Executive's compensation during the twelve (12) months immediately
preceding the Termination Date, over (y) the retirement benefit Executive is
entitled to received under the Benefit Plan as of the Termination Date. To the
extent additional actuarial assumptions are required for the purpose of
calculating benefits under this paragraph, such assumptions shall be as
reasonably agreed to by the parties.

         iii. VESTING OF STOCK OPTIONS. Any outstanding options to purchase the
capital stock of NorthWestern held by Executive on the Termination Date shall
immediately become fully vested without change to the remaining term for the
exercise of such options, and all restrictions on any private equity awards
shall lapse.

         g. LUMP SUM OR DEFERRAL OPTIONS. In lieu of any compensation, benefit
or other payment of any kind to be made to Executive under this Agreement
(including without limitation any payment payable as a result of a Change in
Control or Major Transaction) that by its respective terms or pursuant to the
provisions of this Agreement would be payable for a period subsequent to the
Termination Date, Executive may elect, by delivery of written notice to
NorthWestern not more than ninety (90) days following the Termination Date, to
cause NorthWestern to pay to Executive a lump sum payment, in cash, equal to the
Present Value of all or a portion of the total amounts that would otherwise be
payable to Executive in respect of such compensation or benefit over time.
Present Value shall be determined using a discount rate equal to the most


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recently published yield for ten (10) year United States Treasury Bonds (as
quoted by the Wall Street Journal). In the event that Executive makes such lump
sum election, the Present Value shall be distributed to Executive within thirty
(30) days of the date NorthWestern receives such written notice from Executive.
Executive may also, by delivery of written notice to NorthWestern at least
ninety (90) days before any otherwise scheduled payment date, elect to defer all
or any portion of any payment to be made by NorthWestern to Executive under the
terms of this Agreement. Deferred amounts shall be credited with an investment
return equal to the prime rate of interest (as quoted by The Wall Street
Journal), adjusted quarterly, shall be distributed to Executive or his
designated beneficiary in accordance with a Distribution Election Form, in a
form provided by NorthWestern, and in the absence of a valid distribution
election, shall be distributed to Executive in equal monthly installments over
five (5) years beginning thirty (30) days after the Termination Date. In the
event that Executive makes any such deferral election, NorthWestern shall
deposit the amount deferred and earnings thereon into a grantor trust (the
"Trust") having terms consistent with Revenue Procedure 92-64, and provide the
trustee with a written direction (i) to hold said amount and any investment
return thereon in a segregated account for the benefit of Executive and (ii) to
pay the deferred amounts and earnings thereon to Executive in accordance with
Executive's valid Distribution Election Form and in the absence thereof in
accordance with the terms of this paragraph. Not later than three (3) business
days after a Change in Control, within the meaning of paragraph 7.m.(C),
NorthWestern shall deposit in the Trust an amount that NorthWestern reasonably
projects to be sufficient to fund the payment of all benefits that are or may
become payable to Executive pursuant to this Agreement.



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         h. SUBSEQUENT CHANGES. Reference herein to the terms or provisions of
any compensation, bonus, incentive, private equity, benefit or other
arrangement, plan or program in which Executive is participating under this
Agreement shall be without regard to any proposed amendment, modification or
termination to such arrangement, plan or program made subsequent to the
Termination Date which would adversely affect Executive's rights thereunder, and
the obligations of NorthWestern hereunder with respect to such arrangement, plan
or program shall continue as to Executive (and covered family members and
dependants) in full force and effect. In all such cases, if NorthWestern is
unable to continue Executive's benefits (including covered family members and
dependants) as required, NorthWestern will promptly purchase Equivalent
Coverage.

         5. PROPRIETARY INFORMATION OBLIGATIONS. During the duration of
employment under this Agreement, Executive will have access to and become
acquainted with confidential and proprietary information of NorthWestern and its
affiliates, including but not limited to information or plans regarding customer
relationships, personnel, sales, marketing, and financial operations and
methods, trade secrets, formulas, devices, secret inventions, processes, and
other compilations of information, records, and specifications (collectively,
except to the extent it was already known from other sources, or is or becomes
general knowledge, in each case without known violation of any confidentiality
obligation, "Proprietary Information"). Executive shall not disclose any of the
Proprietary Information, directly or indirectly, or use it in any way, either
during the term of this Agreement or at any time thereafter, except as required
in the course of his employment with NorthWestern or as authorized in writing by
NorthWestern or pursuant to order of any court, legislature or government
agency. All files, records, documents, computer-recorded information, drawings,
specifications, intellectual property, equipment and


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similar items relating to the business of NorthWestern, whether prepared by
Executive or otherwise coming into his possession, shall remain the exclusive
property of NorthWestern, respectively, and shall not be removed under any
circumstances whatsoever without the prior written consent of NorthWestern,
except when (and only for the period) necessary to carry out Executive's duties
hereunder, and if removed shall be immediately returned to NorthWestern upon any
termination of his employment and no copies thereof shall be kept by Executive;
provided, however, that Executive shall be entitled to retain documents that
were personally owned or that reflect personal notes that do not contain
Proprietary Information. Executive shall disclose promptly to NorthWestern any
and all significant conceptions and ideas for inventions, improvements and
valuable discoveries, whether patentable or not, which are conceived or made by
Executive, solely or jointly with another, during the period of employment or
within one (1) year thereafter, and which are related to the business or
activities of NorthWestern, and which Executive conceives as a result of or in
connection with his employment with NorthWestern. Executive hereby assigns and
agrees to assign all his interests therein to NorthWestern or its nominee.
Whenever requested to do so by NorthWestern, Executive shall execute any and all
applications, assignments or other instruments that NorthWestern shall deem
necessary to apply for and obtain Letters Patent of the United States or any
foreign country or to otherwise protect NorthWestern's interest therein.

         6. COVENANT NOT TO COMPETE AND NON-SOLICITATION.

         a. During the term of Executive's employment with NorthWestern and for
a period of two years thereafter (provided NorthWestern has complied with each
of its obligations under this Agreement and Executive has been fully compensated
pursuant to all provisions of this Agreement, including those related to
compensation and


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incentive programs, equity interests, and Benefit Plans), Executive will not in
any manner, directly or indirectly:

               i. manage, be employed by, operate, join, control or participate
in the business of any individual, firm, corporation, institution or company
engaged in the Same or Similar Activities (as defined below) carried on by
NorthWestern or its affiliates or any of their predecessors in its market areas;
or

               ii. own or have any ownership interest exceeding 10% in any
privately-held corporation, firm, institution or company, or exceeding 5% of the
publicly-traded securities of any public corporation, firm, institution or
company engaged in the Same or Similar Activities carried on by NorthWestern or
its affiliates or any of their predecessors in its market areas.

         For purposes of this Agreement, Same or Similar Activities shall mean,
to the extent such activities are then being conducted by NorthWestern or its
affiliates in its market areas, the operation of electric, natural gas and
propane distribution; steel fabrication; energy distribution services; heating,
ventilation, air conditioning, plumbing and related services; and integrated
communication and data services to small and medium sized businesses.

         b. During the term of Executive's employment with NorthWestern and for
a period of two years thereafter, Executive will not in any manner, directly or
indirectly, cause, persuade, solicit, induce or attempt to do any of the
foregoing in order to;

         i. cause any person, business or entity which is a supplier or customer
of NorthWestern or its affiliates at any time during the term of his employment
to terminate any written or oral agreement or understanding with NorthWestern or
its affiliates; or

         ii. cause any person employed by NorthWestern or its affiliates at any
time during the term of his employment to terminate their employment with
NorthWestern or


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its affiliates to terminate their employment in order to work for any
individual, firm, corporation, institution or company engaged in the Same or
Similar Activities carried on by NorthWestern or its affiliates in the United
States.

         c. If any provision contained in this paragraph 6 shall for any reason
be held invalid, illegal or unenforceable in any respect, such invalidity,
illegality or unenforceability shall not affect any other provisions of this
paragraph 6, rather this paragraph 6 shall be construed as if such invalid,
illegal or unenforceable provision had never been contained herein. It is the
intention of the parties that if any of the restrictions or covenants contained
herein is held to cover a geographic area or to be of a duration of time which
is not permitted by applicable law, or in any way construed to be too broad or
to any extent invalid, such provisions shall not be construed to be null, void
or of no effect, but, to the extent such provision would be valid or enforceable
under applicable law if limited in scope or duration, a court of competent
jurisdiction shall construe and interpret or reform this paragraph 6 to provide
for a covenant consistent with the original intent of the parties that is
reasonable in scope as to geographic area, time period and other provisions (not
greater than those contained herein) which shall be valid and enforceable under
such applicable law.

         d. Executive acknowledges that NorthWestern and its affiliates have a
legitimate interest which the provisions of this paragraph 6 are reasonably
necessary to protect, that the restrictions on competition contained in this
paragraph 6 are reasonable and that the consideration set forth in this
Agreement is sufficient for purposes of this paragraph 6.

         e. Executive acknowledges that NorthWestern would be irreparably harmed
by any breach of this paragraph 6 and that there would be no adequate remedy at
law or in damages to compensate NorthWestern for any such breach. Accordingly,


                                    Page 18
<Page>

NorthWestern will be entitled, in addition to any other rights or remedies it
may have at law or in equity, to apply for an injunction enjoining and
restraining Executive from doing or continuing to do any such act or any other
violations or threatened violations of paragraph 6.

         7. CHANGE IN CONTROL OR MAJOR TRANSACTION

         a. Executive's employment under this Agreement may be terminated by
Executive for Good Reason (as defined herein) on written notice to NorthWestern.
NorthWestern agrees, under the conditions described herein, to pay Executive the
compensation and the "Severance Payments" described in this paragraph 7 and the
other payments and benefits described herein in the event Executive's employment
with NorthWestern is terminated by NorthWestern without Cause or by Executive
for Good Reason (determined by treating a Potential Change in Control or
Potential Major Transaction as a Change in Control or a Major Transaction, as
applicable, in applying the definition of Good Reason) following a Change in
Control or a Major Transaction and during the term of this Agreement. Executive
may elect to give written notice and terminate his employment within thirty (30)
days after the occurrence of a Change in Control or Major Transaction, and such
termination shall be deemed a termination for Good Reason. Unless Executive
gives such written notice to NorthWestern and terminates employment within
thirty (30) days after the occurrence of a Change in Control or Major
Transaction, no amount or benefit shall be payable under this paragraph 7 unless
there shall have been (or, under the terms hereof, there shall be deemed to have
been) a termination of Executive's employment by NorthWestern without Cause or
by Executive for Good Reason following a Change in Control or a Major
Transaction.



                                    Page 19
<Page>

         b. In the event of a Potential Change in Control or a Potential Major
Transaction during the term of this Agreement, Executive agrees to remain in the
employ of NorthWestern until the earliest of (i) a date which is six (6) months
from the date of such Potential Change in Control or Potential Major
Transaction, (ii) the date of a Change in Control or a Major Transaction, (iii)
the date of termination by Executive of Executive's employment for Good Reason
(determined by treating the Potential Change in Control or Potential Major
Transaction as a Change in Control or a Major Transaction, as applicable, in
applying the definition of Good Reason), or by reason of death or Disability or
Retirement, or (iv) the termination by NorthWestern of Executive's employment.

         c. If Executive's employment with NorthWestern shall be terminated
without Cause or by Executive for Good Reason (determined by treating a
Potential Change in Control or Potential Major Transaction as a Change in
Control or a Major Transaction, as applicable, in applying the definition of
Good Reason) following a Change in Control or a Major Transaction and during the
term of this Agreement, Executive shall be entitled to receive from NorthWestern
(or its successor) the termination payments described in paragraphs 4.a. and
4.f, and subject to Executive's additional rights under paragraphs 4.g. and 4.h.

         d. Tax Treatment

                  i. In the event that any payment or benefit received or to be
received by Executive in connection with a Change in Control or Major
Transaction or the termination of Executive's employment (all such payments and
benefits being hereinafter called "Total Payments") will be subject (in whole or
part) to the Excise Tax, then, subject to the provisions of this paragraph 7.d.,
NorthWestern shall pay to Executive an additional amount (the "Gross-Up
Payment") such that the net amount


                                    Page 20
<Page>

retained by Executive, after deduction of any Excise Tax on the Total Payments
and any federal, state and local income tax and Excise Tax upon the payment
provided for by this paragraph 7.d., shall be equal to the Total Payments. For
purposes of determining the amount of the Gross-Up Payment, Executive shall be
deemed to pay federal income taxes at the highest marginal rate of federal
income taxation in the calendar year in which the Gross-Up Payment is to be made
and state and local income taxes at the highest marginal rate of taxation in the
state and locality of Executive's residence on the Date of Termination, net of
the maximum reduction in federal income taxes which could be obtained from
deduction of such state and local taxes.

                  ii. In the event that, after giving effect to any
redeterminations described in paragraph 7.d.iv. below, a reduction in the
Severance Payments, to the largest amount that would result in no portion of the
Total Payments being subject to the Excise Tax (after taking into account any
reduction in the Total Payments provided by reason of section 28OG of the Code
in such other plan, arrangement or agreement), would produce a net amount (after
deduction of the net amount of federal, state and local income tax on such
reduced Total Payments) that would be greater than the net amount of unreduced
Total Payments (after deduction of the net amount of federal, state and local
income tax and the amount of Excise Tax to which Executive would be subject in
respect of such Total Payments), then paragraph 7.d.i. shall not apply, and the
Severance Payments shall be so reduced.

                  iii. For purposes of determining whether any of the Total
Payments will be subject to the Excise Tax and the amount of such Excise Tax,
(a) all of the Total Payments shall be treated as "parachute payments" within
the meaning of section 28OG(b)(2) of the Code, unless in the opinion of tax
counsel selected by NorthWestern's independent auditors and reasonably
acceptable to Executive ("Tax


                                    Page 21
<Page>

Counsel"), such other payments or benefits (in whole or in part) do not
constitute parachute payments, including by reason of section 28OG(b)(4)(A) of
the Code, (b) all "excess parachute payments" within the meaning of section
28OG(b)(1) of the Code shall be treated as subject to the Excise Tax, unless in
the opinion of Tax Counsel such excess parachute payments (in whole or in part)
represent reasonable compensation for services actually rendered, within the
meaning of section 28OG(b)(4)(B) of the Code, in excess of the Base Amount
allocable to such reasonable compensation, or are otherwise not subject to the
Excise Tax, and (c) the value of any non-cash benefits or any deferred payment
or benefit shall be determined by NorthWestern's independent auditors in
accordance with the principles of sections 28OG(d)(3) and (4) of the Code. Prior
to the payment date for any payment subject to the provisions of paragraph 7.d.,
NorthWestern shall provide Executive with its calculation of the amounts
referred to here and such supporting materials as are reasonably necessary for
Executive to evaluate NorthWestern's calculations. If Executive disputes
NorthWestern's calculations (in whole or in part), the reasonable opinion of Tax
Counsel with respect to the matter in dispute shall prevail.

                  iv. In the event that (a) the Excise Tax is subsequently
determined to be less than the amount taken into account hereunder at the time
of termination of Executive's employment and (b) after giving effect to such
redetermination, the Severance Payments are not reduced pursuant to paragraph
7.d., Executive shall repay to NorthWestern, at the time that the amount of such
reduction in Excise Tax is finally determined, the portion of the Gross-Up
Payment attributable to such reduction (plus that portion of the Gross-Up
Payment attributable to the Excise Tax and federal, state and local income tax
imposed on the Gross-Up Payment being repaid by Executive to the extent that
such repayment results in a reduction in the Excise Tax and/or a federal,


                                    Page 22
<Page>

state or local income tax deduction) plus interest on the amount of such
repayment at the rate provided in section 1274(b)(2)(B) of the Code. In the
event that (x) the Excise Tax is determined to exceed the amount taken into
account hereunder at the time of the termination of Executive's employment
(including by reason of any payment the existence or amount of which cannot be
determined at the time of the Gross-Up Payment) and (y) after giving effect to
such redetermination, the Severance Payments are not reduced pursuant to
paragraph 7.d., NorthWestern shall make an additional Gross-Up Payment in
respect of such excess (plus any interest, penalties or additions payable by
Executive with respect to such excess) at the time that the amount of such
excess is finally determined.

         e. Severance Payments provided for in this paragraph 7 shall be made
not later than the fifth day following the Termination Date, provided, however,
that if the amounts of such payments, and the limitation on such payments set
forth in paragraph 7.d. hereof, cannot be finally determined on or before such
day, NorthWestern shall pay to Executive on such day an estimate, as determined
in good faith by NorthWestern with the consent of Executive, of the minimum
amount of such payments to which Executive is clearly entitled and shall pay the
remainder of such payments (together with interest at the rate provided in
section 1274(b)(2)(B) of the Code) as soon as the amount thereof can be
determined but in no event later than the thirtieth (30th) day after the
Termination Date. In the event that the amount of the estimated payments exceeds
the amount subsequently determined to have been due, such excess shall
constitute a loan by NorthWestern to Executive, payable on the fifth (5th)
business day after demand by NorthWestern (together with interest at the rate
provided in section 1274(b)(2)(B) of the Code).



                                    Page 23
<Page>

         f. NorthWestern also shall pay to Executive all legal and accounting
fees and expenses incurred by Executive in disputing in good faith the
application of paragraph 7 to any termination of his employment, in seeking in
good faith to dispute any valuation conducted or payment made with respect to
such termination, to obtain or enforce any benefit or right provided by this
Agreement with respect to such termination or in connection with any tax audit
or proceeding to the extent attributable to the application of section 4999 of
the Code to any payment or benefit provided hereunder. Such payments shall be
made within five (5) business days after delivery of Executive's written
requests for payment accompanied with such evidence of fees and expenses
incurred as NorthWestern reasonably may require.

         g. After a Change in Control or a Major Transaction (or the deemed
occurrence of such event pursuant to the provisions of this Agreement) and
during the term of this Agreement, any purported termination of Executive's
employment (other than by reason of death) shall be communicated by written
Notice of Termination from one party hereto to the other party hereto in
accordance with this paragraph. "Notice of Termination" shall mean a notice,
delivered in accordance with paragraph 10.a., which shall indicate the specific
termination provision in this Agreement relied upon and shall set forth in
reasonable detail the facts and circumstances claimed to provide a basis for
termination of Executive's employment under the provision so indicated. Further,
a Notice of Termination for Cause shall comply with the provisions of paragraph
4.b.ii.

         h. "Termination Date", with respect to any purported termination of
Executive's employment after a Change in Control or a Major Transaction (or the
deemed occurrence of such event pursuant to the provisions of this Agreement)
and during the term of this Agreement, shall mean (i) if Executive's employment
is terminated for Disability, thirty (30) days after Notice of Termination is
given (provided


                                    Page 24
<Page>

that Executive shall not have returned to the substantially full-time
performance of Executive's duties during such thirty (30) day period), and (ii)
if Executive's employment is terminated for any other reason, the date specified
in the Notice of Termination (which, in the case of a termination by
NorthWestern, shall not be less than thirty (30) days (except in the case of a
termination for Cause) and, in the case of a termination by Executive, shall not
be less than fifteen (15) days nor more than sixty (60) days, respectively, from
the date such Notice of Termination is given).

         i. If within fifteen (15) days after any Notice of Termination is
given, or, if later, prior to the Termination Date (as determined without regard
to this paragraph 7.i.), the party receiving such Notice of Termination notifies
the other party that a dispute exists concerning the termination, the
Termination Date shall be the date on which the dispute is finally resolved,
either by mutual written agreement of the parties or by a final and binding
arbitration as set forth in this Agreement; provided further that the Date of
Termination shall be extended by a notice of dispute only if such notice is
given in good faith and the party giving such notice pursues the resolution of
such dispute with reasonable diligence.

         j. If a purported termination occurs following a Change in Control or a
Major Transaction (or, under the terms hereof, the deemed occurrence of such
event) and during the term of this Agreement, and such termination is disputed
in accordance with this paragraph, NorthWestern shall pay Executive the full
compensation in effect and continue Executive on an equivalent basis as a
participant in all Benefit Plans (including, but not limited to, compensation,
incentive, private equity and benefits under paragraph 2 hereof) in which
Executive was participating when the notice giving rise to the dispute was
given, until the dispute is finally resolved in accordance with this Agreement.
Amounts paid under this paragraph are in addition to all other amounts


                                    Page 25
<Page>

otherwise payable under this Agreement for termination following a Change in
Control or a Major Transaction (or, under the terms hereof, the deemed
occurrence of such event) and shall not be offset against or reduce any other
amounts due under this Agreement. NorthWestern agrees that it shall not assert
any breach or alleged breach by Executive of any provision of this Agreement or
any other agreement between NorthWestern and Executive as a defense or off-set
to NorthWestern's obligation to make any payment under this Agreement, but shall
be required to assert any such action it chooses to pursue in one or more
separate proceedings.

         k. NorthWestern agrees that, if Executive's employment with
NorthWestern terminates during the term of this Agreement, following a Change in
Control or a Major Transaction (or, under the terms hereof, the deemed
occurrence of such event), Executive is not required to seek other employment or
to attempt in any way to reduce any amounts payable to Executive by NorthWestern
pursuant to this Agreement. Further, the amount of any payment or benefit
provided for in this Agreement shall not be reduced by any compensation earned
by Executive as the result of employment by another employer, by retirement
benefits, by offset against any amount claimed to be owed by Executive to
NorthWestern, or otherwise.

         l. In addition to any obligations imposed by law upon any successor to
NorthWestern, NorthWestern will require any successor (whether direct or
indirect, by purchase, merger, consolidation or otherwise) to all or
substantially all of the business and/or assets of NorthWestern to expressly
assume and agree in writing to perform the responsibilities of NorthWestern
under this Agreement in the same manner and to the same extent that NorthWestern
would be required to perform it if no such succession had taken place. Failure
of NorthWestern to obtain such assumption and agreement on terms reasonable
acceptable to Executive and deliver same to Executive prior to the


                                    Page 26
<Page>

effectiveness of any such succession shall be a breach of this Agreement and
shall entitle Executive to compensation from NorthWestern in the same amount and
on the same terms as Executive would be entitled to hereunder if Executive were
to terminate Executive's employment for Good Reason after a Change in Control or
a Major Transaction (or, under the terms hereof, the deemed occurrence of such
event), except that, for purposes of implementing the foregoing, the date on
which any such succession becomes effective shall be deemed the Termination
Date.

         m. Definitions. Terms not otherwise defined in this Agreement shall
have the meanings indicated below:

                  (A) "Base Amount" shall have the meaning defined in section
         28OG(b)(3) of the Code.

                  (B) "Beneficial Owner" shall have the meaning defined in Rule
         13d-3 under the Securities and Exchange Act of 1934, as amended
         ("Exchange Act") (except that a Person shall be deemed the beneficial
         owner of all securities which such Person may have the right to
         acquire, whether or not such right is presently exercisable or is
         subject to a contingency).

                  (C) A "Change in Control" shall be deemed to have occurred if
         the conditions set forth in any one of the following paragraphs shall
         have been satisfied:

                           (I) any Person is or becomes the Beneficial Owner,
                  directly or indirectly, of securities of NorthWestern (not
                  including in the securities beneficially owned by such Person
                  any securities acquired directly from NorthWestern or its
                  affiliates) representing 20% or more of the combined voting
                  power of NorthWestern's then outstanding securities;

                                    Page 27
<Page>

                           (II) there occurs within any 12-month period any
                  change in the directors of NorthWestern such that the members
                  of the Board prior to such change do not constitute a majority
                  of the directors after giving effect to all changes during
                  such 12-month period, unless the election, or the nomination
                  for election by NorthWestern's stockholders, of each new
                  director was approved by a vote of two-thirds (2/3) of the
                  directors then in office who were directors at the beginning
                  of the period; or

                           (III) the occurrence of any other event that would be
                  required to be reported in response to Item 6(e) of Schedule
                  14A of Regulation 14A of the Exchange Act.

                  (D) "Code" shall mean the Internal Revenue Code of 1986, as
         amended from time to time.

                  (E) "Excise Tax" shall mean any excise tax imposed under
         section 4999 of the Code.

                  (F) "Good Reason" for termination by Executive of Executive's
         employment shall mean the occurrence (without Executive's express
         written consent) of any one of the following acts by NorthWestern, or
         failures by NorthWestern to act, unless, in the case of any act or
         failure to act described in paragraph (III) or (IV) below, such act or
         failure to act is corrected prior to the Termination Date specified in
         the Notice of Termination given in respect thereof:

                           (I) the occurrence of any of the events set forth in
                  paragraph 4.a.ii.(a) or (b) hereof;

                           (II) the failure by NorthWestern to make any payment
                  to Executive within seven (7) days of the date such payment is
                  due or the breach by NorthWestern of any other material
                  provision of this Agreement;

                                    Page 28
<Page>

                           (III) the failure by NorthWestern to continue in
                  effect any compensation plan, private equity plan, arrangement
                  or benefit in which Executive participates under this
                  Agreement immediately prior to the Change in Control or the
                  Major Transaction (or deemed occurrence of such event), unless
                  an equitable arrangement satisfactory to Executive (embodied
                  in an ongoing substitute or alternative plan) has been made
                  with respect to such plan, or the failure by NorthWestern to
                  continue Executive's participation therein (or in such
                  substitute or alternative plan) on a basis not substantially
                  less favorable, including but not limited to the nature,
                  amount, vesting and duration of benefits provided and the
                  level of Executive's participation relative to other
                  participants, as existed at the time of the Change in Control
                  or Major Transaction (or deemed occurrence of such event); or

                           (IV) the failure by NorthWestern to continue to
                  provide Executive (and any covered family member or
                  dependants) with benefits substantially similar in all
                  material respects to those which Executive is receiving
                  immediately prior to the Change in Control or Major
                  Transaction (or deemed occurrence of such event), including,
                  without limitation the benefit plans and arrangements set
                  forth on Schedule D of this Agreement; the taking of any
                  action by NorthWestern which would directly or indirectly
                  materially reduce any of such benefits or deprive Executive of
                  any material fringe benefit enjoyed by Executive at the time
                  of the Change in Control or Major Transaction (or deemed
                  occurrence of such event), or the failure by NorthWestern to
                  provide Executive with the number of paid vacation days to
                  which Executive is entitled on the basis of years of


                                    Page 29
<Page>

                  service with NorthWestern in accordance with NorthWestern's
                  normal vacation policy in effect at the time of the Change in
                  Control or Major Transaction (or deemed occurrence of such
                  event).

         Executive's employment shall be deemed to have been terminated by
         Executive for Good Reason following a Change in Control or a Major
         Transaction if: (i) Executive's employment is terminated by
         NorthWestern prior to a Change in Control or a Major Transaction
         without Cause at the direction of a Person who has entered into an
         agreement, arrangement or understanding with NorthWestern or another
         Person the consummation of which would constitute (or which is
         contingent upon or entered into in connection with) a Change in Control
         or a Major Transaction, (ii) Executive terminates his employment for
         Good Reason prior to a Change in Control or a Major Transaction
         (determined by treating a Potential Change in Control or Potential
         Major Transaction as a Change in Control or a Major Transaction, as
         applicable, in applying the definition of Good Reason) if the
         circumstance or event which constitutes Good Reason occurs at the
         direction of the Person(s) referred to in clause (i), or (iii)
         Executive's employment is terminated without Cause or for a Fundamental
         Change (as defined in this Agreement) that follows or is followed
         within six months by a Change in Control or Major Transaction (or
         Potential Change in Control or Potential Major Transaction).
         Executive's right to terminate Executive's employment for Good Reason
         shall not be affected by Executive's incapacity due to physical or
         mental illness. Executive's continued employment shall not constitute
         consent to, or a waiver of rights with respect to, any act or failure
         to act constituting Good Reason hereunder.



                                    Page 30
<Page>

                  (G) A "Gross-up Payment" shall have the meaning given in
         paragraph 7.d. hereof.

                  (H) A "Major Transaction" shall be deemed to have occurred if
         the conditions set forth in any one of the following paragraphs shall
         have been satisfied:

                           (I) the Board or the shareholders of NorthWestern
                  approve a merger or consolidation of NorthWestern with any
                  corporation or other entity, other than (i) a merger or
                  consolidation which would result in the individuals who prior
                  to such merger or consolidation constitute the Board
                  constituting at least two-thirds (2/3) of the board of
                  directors of NorthWestern or the surviving or succeeding
                  entity immediately after such merger or consolidation, or (ii)
                  a merger or consolidation effected to implement a
                  recapitalization of NorthWestern (or similar transaction) in
                  which no Person acquires more than 20% of the combined voting
                  power of NorthWestern's then outstanding securities; or

                           (II) the Board or the shareholders of NorthWestern
                  approve a plan of complete liquidation of NorthWestern; or

                           (III) the Board or the shareholders of NorthWestern
                  approve an agreement or transaction (or series of agreements
                  or transactions) for the sale or disposition by NorthWestern
                  of all or substantially all of NorthWestern's assets (meaning
                  assets representing thirty percent (30%) or more of the net
                  tangible assets of NorthWestern or generating thirty percent
                  (30%) or more of the operating income or operating cash flow
                  of NorthWestern), other than a sale or disposition which would
                  result in the individuals who prior to such sale or
                  disposition constitute the Board


                                    Page 31
<Page>

                  constituting at least two-thirds (2/3) of the board of
                  directors of the Person purchasing such assets immediately
                  after such sale or disposition.

                  (I) "Normal Retirement Age" shall mean the earliest age at
         which Executive may commence Retirement and become entitled to an
         unreduced pension under the IRS qualified Pension Plan.

                  (J) "Person" shall have the meaning given in Section 3(a)(9)
         of the Exchange Act, as modified and used in Sections 13(d) and 14(d)
         thereof; however, a Person shall not include (i) NorthWestern, (ii) a
         trustee or other fiduciary holding securities under an employee benefit
         plan of NorthWestern (so long as such employee benefit plan is not
         being utilized, directly or indirectly, to effect, assist or contribute
         to a Change in Control or Major Transaction), (iii) an underwriter
         temporarily holding securities pursuant to an offering of such
         securities, or (iv) a corporation owned, directly or indirectly, by the
         shareholders of NorthWestern in substantially the same proportions as
         their ownership of shares of NorthWestern prior to the Change in
         Control or Major Transaction.

                  (K) "Potential Change in Control" shall be deemed to have
         occurred if the conditions set forth in any one of the following
         paragraphs shall have been satisfied:

                           (I) NorthWestern enters into an agreement, the
                  consummation of which would result in the occurrence of a
                  Change in Control;

                           (II) any Person publicly announces a solicitation of
                  proxies or a tender offer (within the meaning of the Exchange
                  Act) to seek control or acquire 20% or more of North Western's
                  outstanding common stock, respectively;

                                    Page 32
<Page>

                           (III) any Person who is or becomes the Beneficial
                  Owner, directly or indirectly, of securities of NorthWestern
                  representing 10% or more of the combined voting power of
                  NorthWestern's then outstanding securities, increases such
                  Person's beneficial ownership of such securities by an
                  additional 5% or more of such outstanding securities, unless
                  such Person has reported or is required to report such
                  ownership (but less than 20%) on Schedule 13G under the
                  Exchange Act (or any comparable or successor report) or on
                  Schedule 13D under the Exchange Act (or any comparable or
                  successor report) which Schedule 13D does not state any
                  intention to or reserve the right to control or influence the
                  management or policies of NorthWestern or engage in any of the
                  actions specified in Item 4 of such Schedule (other than the
                  disposition of the common shares) and, within 10 business days
                  of being requested by NorthWestern to advise it regarding the
                  same (and Executive may cause NorthWestern to so request),
                  certifies to NorthWestern that such Person acquired such
                  securities of NorthWestern in excess of 14.9% inadvertently
                  and who, together with its affiliates, shall promptly reduce
                  its Beneficial Ownership below 15%; provided, however, that if
                  the Person requested to so certify fails to do so within 10
                  business days, or amends such filing, publicly announces or
                  otherwise manifests its intention to seek to control or
                  influence the management or policies of NorthWestern, then
                  such occurrence shall be deemed a Potential Change in Control;
                  or

                           (IV) the Board adopts a resolution to the effect
                  that, for purposes of this Agreement, a Potential Change in
                  Control has occurred.


                                    Page 33
<Page>

                  (L) "Potential Major Transaction" shall be deemed to have
         occurred if the conditions set forth in any one of the following
         paragraphs shall have been satisfied:

                           (I) NorthWestern enters into an agreement, the
                  consummation of which would result in the occurrence of a
                  Major Transaction; or

                           (II) the Board adopts a resolution to the effect
                  that, for purposes of this Agreement, a Potential Major
                  Transaction has occurred.

                  (M) "Retirement" shall be deemed the reason for the
         termination by NorthWestern or Executive of Executive's employment if
         such employment is terminated in accordance with NorthWestern's written
         mandatory retirement policy, if any, as in effect immediately prior to
         the Change in Control or Major Transaction (or deemed occurrence of
         such event), or in accordance with any retirement arrangement
         established with Executive's written consent with respect to Executive.

         8. ARBITRATION OF DISPUTES. Any disputes of any kind regarding this
Agreement, including, but not limited to, its termination shall be subject to
final and binding arbitration, to the extent permitted by law, pursuant to the
Employment Dispute Resolution Rules and Regulations of the American Arbitration
Association. Such disputes shall include, but are not limited to, claims for
breach of contract (express or implied), tort claims, claims for discrimination,
and claims for violation of any federal or state law or regulation. Any request
for arbitration must be made in writing within 365 calendar days of the
occurrence giving rise to the dispute. The arbitrator shall apply the
substantive law (and the law of remedies, if applicable) of the State of
Delaware, or federal law, or both, as applicable to the claim or claims
asserted. The arbitration shall be final and binding upon all of the parities
and shall be enforceable to the extent


                                    Page 34
<Page>

permitted by law. Judgment may be entered on the arbitrator's award in any court
having jurisdiction, and Executive (subject to the provisions of paragraph 7.f)
shall be entitled to reimbursement of attorney fees if substantially successful
on the merits. Executive shall be entitled to seek specific performance of
Executive's right to be paid any amounts payable under this Agreement during the
pendency of any dispute or controversy arising under or in connection with this
Agreement.

         9. INDEMNIFICATION. NorthWestern shall, to the fullest extent to which
it is empowered to do so by the General Corporation Law of Delaware, or any
other applicable laws, as from time to time in effect, and in the manner therein
provided, indemnify and hold harmless Executive, through the duration of all
statutory periods during which any such claim may be brought or asserted, from
and against any actual, threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative, investigative or otherwise,
to which Executive is or is threatened to be made a party by reason of the fact
that he is or was a director, officer, employee or agent of NorthWestern, or is
or was serving at the request of NorthWestern as a director, officer, employee
or agent of another corporation, partnership, joint venture, trust or other
enterprise against all expenses (including attorney's fees), judgments, fines
and amounts paid in settlement actually and reasonably incurred by him in
connection with such action, suit or proceeding. Expenses incurred by Executive
in defending a civil, criminal, administrative, investigative or other action,
suit or proceeding shall be paid by NorthWestern in advance of the final
disposition of such action, suit or proceeding upon receipt of an undertaking by
or on behalf of Executive to repay such amount if it is ultimately determined
that NorthWestern is entitled to recover such expenses. The indemnification and
advancement provisions set forth in this Agreement shall not be deemed exclusive
but shall be cumulative with all other rights to


                                    Page 35
<Page>

indemnification or expense advancement to which Executive may be entitled,
including his rights under paragraph 7.f. of this Agreement.

         10. MISCELLANEOUS.

         a. NOTICES. Any notices provided hereunder must be in writing and shall
be deemed effective on the date of delivery if delivered by hand (receipt
requested), mailed by registered mail, return receipt requested, or delivered by
nationally recognized overnight courier (regularly providing proof of delivery),
to the recipient at the address indicated below:

         To Executive:

                  Michael J. Hanson




         To NorthWestern:

                  Corporate Secretary
                  NorthWestern Corporation
                  125 S. Dakota Ave.
                  Sioux Falls, SD 57104



or to such other address or to the attention of such other person as the
recipient party shall have specified by prior written notice to the sending
party.

         b. SEVERABILITY. Whenever possible, each provision of this Agreement
will be interpreted in such manner as to be effective and valid under applicable
law, but if any provision of this Agreement is held to be invalid, illegal or
unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceablility will not affect
any other provision or any other jurisdiction, and the parties shall endeavor in
good faith negotiations to replace such invalid, illegal or unenforceable
provision with one or more provisions that faithfully reflect the original


                                    Page 36
<Page>

economic intent of the parties as manifested in the invalid, illegal or
unenforceable provision.

         c. ENTIRE AGREEMENT. This document constitutes the final, complete, and
exclusive embodiment of the entire agreement and understanding between the
parties related to the subject matter hereof and supersedes and preempts any
prior or contemporaneous understandings, agreements, or representations by or
between the parties, written or oral. The schedules, appendices and agreements
attached hereto or referenced herein are hereby incorporated by this reference
into this Agreement and made a part hereof as though the terms thereof were
fully set forth herein.

         d. COUNTERPARTS. This Agreement may be executed on separate
counterparts, any one of which need not contain signatures of more than one
party, but all of which taken together will constitute one and the same
agreement.

         e. SUCCESSORS AND ASSIGNS. This Agreement is intended to bind and inure
to the benefit of and be enforceable by Executive and NorthWestern, and their
respective successors and assigns, except that Executive may not assign any of
his duties hereunder, and he may not assign any of his rights hereunder without
the written consent of NorthWestern, which shall not be withheld unreasonably.
In the event of Executive's death after termination of employment, his heirs,
legal representative or other designated representative shall be entitled to any
payments due him under this Agreement.

         f. ATTORNEYS' FEES. Except as expressly provided herein to the contrary
(including, without limitation, paragraph 7.f.), if any proceeding is necessary
to enforce or interpret the terms of this Agreement, or to recover damages for
breach hereof, Executive shall, if substantially successful on the merits, be
entitled to recover


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reasonable legal and accounting fees, as well as costs and disbursements, in
addition to any other relief to which he or it may be entitled.

         g. AMENDMENTS. No amendments or other modifications to this Agreement
may be made except by a writing signed by both parties. Nothing in this
Agreement, express or implied, is intended to confer upon any third person any
rights or remedies under or by reason of this Agreement. No amendment or waiver
of this Agreement requires the consent of any individual, partnership,
corporation or other entity not a party to this Agreement.

         h. CHOICE OF LAW. All questions concerning the construction, validity
and interpretation of this Agreement will be governed by the internal law, and
not the law of conflicts, of the State of Delaware.

         i. REFERENCES. The words "herein," "hereof" and "hereunder" and other
words of similar import refer to this Agreement as a whole, including the
schedules, appendices and agreements attached hereto. Wherever from the context
it appears appropriate, each term stated in either the singular or plural shall
include the other, and pronouns stated in the masculine, feminine or neuter
gender shall include the others.

         11. EFFECTIVE DATE. Except as otherwise expressly provided, this
Agreement shall be effective for the term referred to in paragraph 1.d. hereof.


NORTHWESTERN CORPORATION                    "EXECUTIVE"


By /s/ Merle D. Lewis                       /s/  Michael J. Hanson
   ----------------------------------       ------------------------------------
   Chairman & Chief Executive Officer       Michael J. Hanson








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                                                                      SCHEDULE A
                                                                      ----------

SALARY. Executive shall receive for services to be rendered hereunder annual
base compensation as follows:



         Year Ended February 28, 2002     $330,000

         Years Ended February 28,         Base compensation for the years ended
         2003-2005                        February 28, 2003, 2004 and 2005 shall
                                          be set within a range around the
                                          median of comparable companies as
                                          determined by William M. Mercer
                                          Incorporated or other qualified
                                          consultant selected by the NOR Board
                                          Nominating and Compensation Committee
                                          (but not less than the base
                                          compensation for the year ended
                                          February 28, 2002).








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                                                                      SCHEDULE B
                                                                      ----------

SHORT-TERM INCENTIVE PLANS. Executive shall be eligible to participate in the
following Short-Term Incentive Plans of NorthWestern:

Short-Term Incentive                2001 Annual Incentive at Target Performance
--------------------                -------------------------------------------

NOR ST Performance Plan             $50,000    15.2% of base salary

NSG NorthSTAR Plan                  $50,000    15.2% of base salary

NSG Incentive Plan                  $125,000   37.8% of base salary









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                                                                      SCHEDULE C
                                                                      ----------

LONG-TERM EQUITY PLANS - Executive shall be eligible to participate in the
following Long-Term Incentive Plans of NorthWestern:

NOR Stock Options       2001 Grant of 9,000 shares
                        Implied Face Amount of $65,000 (19.7% of base salary)

Other Long-Term Incentive           2001 Incentive at Target Performance
-------------------------           ------------------------------------

NOR LT Performance Plan             $68,000     20.6% of base salary

NSG LTIP                            $137,000    41.5% of base salary











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                                                                      SCHEDULE D
                                                                      ----------

PARTICIPATION IN BENEFIT PLANS - During the term hereof, Executive shall be
entitled to participate in the plans and programs of NorthWestern available to
employees of Executive's level as generally listed below (copies or summaries of
the plans are incorporated by reference and are available to Executive upon
request):

         o        Health Plans

         o        401(K) and Supplemental 401(K) Plan

         o        ESOP Plan

         o        Pension Plan (and related Supplemental Pension)

         o        Family Protector Plan

         o        Supplemental Income Security Plan

         o        Short-Term and Long-Term Disability Plans

         o        Standard Life Insurance Plan

         o        Standard Vacation Plan

         o        Standard Executive Reimbursement Program for Business Expenses

         o        Association Dues, Automobile Allowance (including insurance,
                  gas & maintenance costs), Country Club and Service Club Dues




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