SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 11-K


(Mark One)

/X/   Annual Report Pursuant to Section 15(d) of the Securities Exchange Act of
      1934

For the fiscal year ended DECEMBER 31, 2006

                                       or

/ /   Transition Report Pursuant to Section 15(d) of the Securities Exchange Act
      of 1934

For the transition period from                  to
                                -------------        -------------



                           Commission File No. 1-3548




                    MINNESOTA POWER AND AFFILIATED COMPANIES
                  RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN

                            (Full Title of the Plan)

                          -----------------------------


                                  ALLETE, Inc.
                            30 West Superior Street
                          Duluth, Minnesota 55802-2093

                         (Name of issuer of securities
                         held pursuant to the Plan and
                          the address of its principal
                               executive office)

                          -----------------------------



                                      INDEX

                                                                            PAGE

Report of Independent Registered Public Accounting Firm                       2

Statement of Net Assets Available for Benefits -
        December 31, 2006 and 2005                                            3

Statement of Changes in Net Assets Available for Benefits -
        Year Ended December 31, 2006                                          4

Notes to Financial Statements                                                 5

Schedule I:     Schedule of Assets (Held at End of Year) -
                     December 31, 2006                                       12

Signatures                                                                   13


Note:   Other schedules  required by 29 CFR  2520.103.10  of the U.S. Department
        Department of Labor's Rules and Regulations for Reporting and Disclosure
        under the  Employee  Retirement  Income  Security  Act of 1974 have been
        omitted because they are not applicable.


1                          ALLETE 2006 RSOP Form 11-K



            REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Participants and Administrator of the
Minnesota Power and Affiliated Companies
Retirement Savings and Stock Ownership Plan


We have audited the accompanying  Statement of Net Assets Available for Benefits
of the Minnesota  Power and Affiliated  Companies  Retirement  Savings and Stock
Ownership  Plan (the "Plan") as of December  31, 2006 and 2005,  and the related
statement  of changes in net assets  available  for  benefits for the year ended
December 31, 2006.  These  financial  statements are the  responsibility  of the
Plan's  management.  Our  responsibility  is to  express  an  opinion  on  these
financial statements based on our audit.

We conducted our audit of these  statements in accordance  with the standards of
the Public Company Accounting  Oversight Board (United States).  Those standards
require that we plan and perform the audit to obtain reasonable  assurance about
whether the financial  statements  are free of material  misstatement.  An audit
includes  examining,  on a test  basis,  evidence  supporting  the  amounts  and
disclosures in the financial  statements.  An audit also includes  assessing the
accounting  principles  used and significant  estimates made by management,  and
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December  31,  2006 and 2005,  and the changes in its net assets  available  for
benefits for the year ended  December 31, 2006,  in conformity  with  accounting
principles generally accepted in the United States of America.

Our audit was  conducted  for the  purpose  of  forming  an opinion on the basic
financial  statements taken as a whole. The supplemental  schedule,  Schedule of
Assets (Held at End of Year) - December 31, 2006,  is presented  for the purpose
of  additional  analysis  and is not a  required  part  of the  basic  financial
statements  but is  supplementary  information  required  by the  Department  of
Labor's Rules and  Regulations  for Reporting and Disclosure  under the Employee
Retirement  Income  Security  Act of 1974.  This  supplemental  schedule  is the
responsibility  of the Plan's  management.  The  supplemental  schedule has been
subjected  to the  auditing  procedures  applied  in  the  audits  of the  basic
financial  statements  and, in our  opinion,  is fairly  stated in all  material
respects in relation to the basic financial statements taken as a whole.


/s/ Reilly, Penner & Benton LLP


Milwaukee, Wisconsin
June 15, 2007


                           ALLETE 2006 RSOP Form 11-K                          2



                                        MINNESOTA POWER AND AFFILIATED COMPANIES
                                       RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN
                                     STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
                                                        Thousands


                                                                                          DECEMBER 31,
                                                                                  2006                   2005
------------------------------------------------------------------------------------------------------------------
                                                                                                 
ASSETS

     Investments
         Participant Funds                                                      $314,595               $288,352
         Unallocated Funds                                                       117,217                116,402
------------------------------------------------------------------------------------------------------------------

                                                                                 431,812                404,754
------------------------------------------------------------------------------------------------------------------

     Contributions Receivable
         Participant                                                                 214                    207
         Employer                                                                  1,087                    946
------------------------------------------------------------------------------------------------------------------

                                                                                   1,301                  1,153
------------------------------------------------------------------------------------------------------------------

     Cash                                                                              1                      1

------------------------------------------------------------------------------------------------------------------

                                                                                 433,114                405,908
------------------------------------------------------------------------------------------------------------------

LIABILITIES

     Accrued Interest                                                              1,398                  2,387

     Accrued Administrative Expenses                                                   -                    124

     Long-Term Debt                                                               69,818                 69,818
------------------------------------------------------------------------------------------------------------------

                                                                                  71,216                 72,329
------------------------------------------------------------------------------------------------------------------

NET ASSETS AVAILABLE FOR BENEFITS                                               $361,898               $333,579
------------------------------------------------------------------------------------------------------------------

                            The accompanying notes are an integral part of these statements.



3                          ALLETE 2006 RSOP Form 11-K




                                        MINNESOTA POWER AND AFFILIATED COMPANIES
                                       RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN
                                STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                                                        Thousands


                                                                           YEAR ENDED DECEMBER 31, 2006
                                                              ----------------------------------------------------
                                                               PARTICIPANT         UNALLOCATED
                                                                  FUNDS               FUNDS             TOTAL
------------------------------------------------------------------------------------------------------------------
                                                                                              
INVESTMENT INCOME
     Dividend Income                                            $ 11,382             $ 3,754           $ 15,136
     Interest Income                                                 196                   -                196
     Net Appreciation in Fair Value of Investments                20,777               6,649             27,426
     Other                                                           506                   -                506
------------------------------------------------------------------------------------------------------------------

                                                                  32,861              10,403             43,264
------------------------------------------------------------------------------------------------------------------

CONTRIBUTIONS
     Participant                                                   8,132                   -              8,132
     Employer                                                          -               1,764              1,764
     Rollover                                                        542                   -                542
------------------------------------------------------------------------------------------------------------------

                                                                   8,674                1,764            10,438
------------------------------------------------------------------------------------------------------------------

DEDUCTIONS
     Participants' Withdrawals                                   (20,175)                  -            (20,175)
     Interest Expense                                                  -              (5,459)            (5,459)
     Administrative Expenses                                          (2)                (18)               (20)
     Redemption Fees                                                  (8)                  -                 (8)
------------------------------------------------------------------------------------------------------------------

                                                                 (20,185)             (5,477)           (25,662)
------------------------------------------------------------------------------------------------------------------

TRANSFERS AND ALLOCATIONS
     Transfer in of Subsidiary Net Assets                          5,860                   -              5,860
     Transfers to Retirement Plans                                (5,581)                  -             (5,581)
     Allocations to Participants                                   4,640              (4,640)                 -
------------------------------------------------------------------------------------------------------------------

                                                                   4,919              (4,640)               279
------------------------------------------------------------------------------------------------------------------

NET INCREASE                                                      26,269               2,050             28,319

NET ASSETS AVAILABLE FOR BENEFITS
     Beginning of Year                                           287,111              46,468            333,579
------------------------------------------------------------------------------------------------------------------

     End of Year                                                $313,380             $48,518           $361,898
------------------------------------------------------------------------------------------------------------------

                            The accompanying notes are an integral part of these statements.



                           ALLETE 2006 RSOP Form 11-K                          4



                    MINNESOTA POWER AND AFFILIATED COMPANIES
                  RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN
                         NOTES TO FINANCIAL STATEMENTS

NOTE 1 - DESCRIPTION OF THE PLAN

The  Minnesota  Power and  Affiliated  Companies  Retirement  Savings  and Stock
Ownership  Plan  (RSOP or  Plan) is a  contributory  defined  contribution  plan
subject to the  provisions  of the Employee  Retirement  Income  Security Act of
1974(ERISA),  as amended,  and qualifies as an employee stock ownership plan and
profit sharing plan. At December 31, 2006, there were 1,892  participants in the
RSOP.  Participating  affiliated  companies  (collectively,  the  Companies)  at
December 31, 2006, included:

     - ALLETE, Inc. (ALLETE or Company)
     - Minnesota Power (an operating division of ALLETE)
     - Superior Water, Light and Power Company
     - MP Affiliate Resources, Inc.

Effective  October  30,  2006,  assets  held  in  the  Florida  Water  Services
Corporation  Contributory Profit Sharing Plan were merged with the RSOP. Florida
Water Services  Corporation,  a wholly owned subsidiary of ALLETE,  discontinued
its operations in 2004.

The RSOP provides eligible employees of the Companies an opportunity to save for
retirement by electing to make  before-tax and after-tax  contributions  through
payroll   deduction,   and  directing  the  contributions  into  various  401(k)
investment options. (See Participant Investment Options.) The RSOP also provides
eligible  employees of the Companies employee stock ownership benefits in ALLETE
common stock (Common Stock).

BASIS OF PRESENTATION

Participant funds represent the participants' 401(k) investment funds and shares
allocated  to  participants  in the ALLETE  RSOP Stock Fund.  Unallocated  funds
represent  unallocated  shares to be allocated to the participants in the ALLETE
RSOP Stock Fund in the future.

ADMINISTRATION

The  Plan is  administered  for the  Companies  by the  Employee  Benefit  Plans
Committee (Committee).  The mailing address of the Committee is 30 West Superior
Street, Duluth,  Minnesota 55802-2093.  The Committee consists of 11 members who
were  appointed by the Board of Directors of ALLETE.  The Board of Directors has
the power to  remove  members  of the  Committee  from  office.  Members  of the
Committee are all employees of the  Companies  and receive no  compensation  for
their services with respect to the Plan.

Committee  responsibilities  include  determining  compliance  with  the  Plan's
eligibility requirements, as well as, the administration and payment of benefits
in a manner  consistent  with the  terms of the  Plan and  applicable  law.  The
Committee  has the  authority  to  establish,  modify  and repeal  policies  and
procedures as it deems  necessary to carry out the  provisions of the Plan.  The
Committee  also has the  authority to designate  persons to carry out  fiduciary
responsibilities  (other  than  trustee  responsibilities)  under the Plan.  The
Committee has the power to appoint an investment manager or managers (as defined
by  ERISA),  attorneys,  accountants  and such  other  persons  as it shall deem
necessary or desirable in the  administration  of the Plan. The Companies or the
Plan  pays  administration  fees  and  expenses  of  agents,   outside  experts,
consultants  and investment  managers.  The Plan charges  participants  who take
participant loans or use the Plan's  self-managed  brokerage account feature for
expenses relating to such loans or accounts.


5                          ALLETE 2006 RSOP Form 11-K



NOTE 1 - DESCRIPTION OF THE PLAN (CONTINUED)

Wachovia Retirement Services (Wachovia) a service group of Wachovia  Corporation
and Wachovia Bank,  National  Association,  is the service provider for the Plan
and handles participant recordkeeping,  asset custody, trustee and certain other
administrative  responsibilities.  Wachovia  allows  the Plan to value  accounts
daily and provides participants with on-line capability to direct the investment
of their account balances.  Wachovia Bank, N.A.  (Trustee),  which is located at
1525 West W.T. Harris  Boulevard,  Charlotte,  North Carolina  28262-8522 is the
trustee for the Plan. The Trustee  carries $20 million of blanket bond insurance
and $20 million of professional liability insurance.

On  June 1,  2006,  Wachovia  Bank,  N.A.  purchased  the  defined  contribution
recordkeeping  business of Ameriprise  Financial,  Inc.,  the parent  company of
Ameriprise  Financial  Services,  Inc. and Ameriprise Trust Company.  Ameriprise
Retirement Services, a service group of Ameriprise Financial Services,  Inc. and
Ameriprise Trust Company,  was the service provider for the Plan, and Ameriprise
Trust  Company  was the trustee for the Plan.  Ameriprise  continued  to provide
recordkeeping  and directed  trustee  services for the Plan until April 1, 2007,
when the transition to Wachovia was completed.

PARTICIPANT INVESTMENT OPTIONS

The Plan's  401(k)  investment  fund options at December  31,  2006,  are listed
below.  Detailed  descriptions  of the investment  options and risk profiles are
available in the corresponding fund's prospectus.

     -   ALLETE Stock Fund
     -   RiverSource Trust Bond Index Fund II
     -   RiverSource Trust Income Fund II
     -   RiverSource Trust Small Cap Equity Index Fund II
     -   Artisan International Fund
     -   Dodge & Cox Stock Fund
     -   Dodge & Cox International Fund
     -   HighMark Small Cap Value Fund
     -   MainStay Large Cap Growth Fund
     -   The Oakmark Equity and Income Fund
     -   Oppenheimer Developing Markets Fund
     -   Vanguard Institutional Index Fund
     -   Vanguard Mid-Cap Index Fund
     -   William Blair Small Cap Growth Fund

Participants may also establish a self-managed  brokerage account,  which allows
the  participant  to  make  investments  in or  transfers  to a  wide  range  of
securities,   including   publicly  traded  stocks,   bonds  and  mutual  funds.
Participants  who have a  self-managed  brokerage  account  pay an annual fee in
addition to any trading fees incurred upon investment changes.

Participants  may change their level of  contribution,  change their  investment
elections for future contributions and make transfers between investment options
at any time by contacting Wachovia.

FUND TRANSFER  RESTRICTIONS.  In 2006,  the Vanguard  Mid-Cap Index Fund and the
Vanguard Institutional Index Fund began restricting participants from purchasing
shares in these  funds  for a period  of 60 days from the date the  participants
transfer shares out of these funds.

REDEMPTION FEES.  Certain mutual funds charge  redemption fees that are paid out
of the  participant's  account.  A  redemption  fee is charged  when  shares are
transferred or  exchanged  out of  the fund  before  the fund's minimum  holding
period has been met.




SUMMARY OF                                          EFFECTIVE              REDEMPTION                MINIMUM
REDEMPTION FEES BY FUND                                DATE                   FEE                HOLDING PERIOD
------------------------------------------------------------------------------------------------------------------
                                                                                        

Artisan International Fund                         June 1, 2005                2%                    90 days
Oppenheimer Developing Markets                     June 1, 2005                2%                    30 days
William Blair Small Cap Growth Fund                June 1, 2005                1%                    60 days
------------------------------------------------------------------------------------------------------------------


                           ALLETE 2006 RSOP Form 11-K                          6



NOTE 1 - DESCRIPTION OF THE PLAN (CONTINUED)

EMPLOYEE STOCK OWNERSHIP BENEFITS - ALLETE RSOP STOCK FUND

ALLETE  sponsors a leveraged  employee  stock  ownership  plan (ESOP) within the
RSOP.  Eligible  employees  of the  Companies  receive  Common  Stock  ownership
benefits in the ALLETE RSOP Stock Fund.  These benefits are primarily  funded by
payments made by the Plan on a loan (see Loan  Account).  Shares of Common Stock
are allocated to eligible  employees as provided by the Plan (see Basic Account,
Special Account,  Partnership Account, Bargaining Unit Account, Matching Account
and  Results  Sharing  Account).  The  shares of  Common  Stock  allocated  to a
participant's  ALLETE RSOP Stock Fund come from the Loan Account,  as determined
by ALLETE.  Each participant's  account value,  however, is determined on a unit
basis and consists of both Common  Stock and cash.  (See Note 4.) The unit value
is adjusted each business day to reflect investment results, including cash.

Dividends are  automatically  reinvested in Common Stock held in the ALLETE RSOP
Stock Fund. However,  participants may make an election, at any time, to receive
cash dividends paid on certain  eligible  shares.  Units within a  participant's
Basic  Pre-1989  Account  can be  withdrawn  at any time,  while all other units
within  a  participant's  ALLETE  RSOP  Stock  Fund  can be  withdrawn  when the
participant  reaches  age 59  1/2 or  terminates  employment.  Participants  may
transfer all or any part of their ALLETE RSOP Stock Fund,  excluding their Basic
Pre-1989  Account,  to other 401(k)  investment  options at any time.  Effective
January 1, 2007, participants may transfer their Basic Pre-1989 Account to other
401(k) investment options at any time.

LOAN ACCOUNT. The RSOP was amended in 1990 to establish a leveraged Loan Account
and borrow $75 million (RSOP Loan) to acquire  2,830,188  newly issued shares of
Common Stock  (1,886,792  shares  adjusted for stock splits) from ALLETE for the
benefit of eligible participants. Under this amendment, active participants with
a Basic  Account are allocated  shares to their Special  Account with a value at
least equal to: (a) dividends  payable on shares held by those  participants  in
the Plan and (b) tax savings  generated from the deductibility of dividends paid
on all  shares  of  Common  Stock  held in the RSOP as of  August  4,  1989.  In
accordance with this  amendment,  a promissory note was issued to ALLETE for $75
million at a 10.25%  interest rate with a term not to exceed 25 years.  In 2006,
the RSOP loan was  refinanced at a 6% interest  rate.  The Loan Account may also
provide for other allocation types as determined by the Company.

BASIC  ACCOUNT.  Participants'  Basic Accounts  received  shares of Common Stock
purchased with incremental investment tax credit contributions and payroll-based
tax credit  contributions.  Contributions  to the  participants'  Basic Accounts
ceased after 1986.

SPECIAL ACCOUNT.  For the years 1985 through 1989, the Companies  received a tax
deduction  for cash  dividends  paid to  participants  on ALLETE RSOP Stock Fund
shares in their Basic  Account.  The Companies  contributed,  to the ALLETE RSOP
Stock Fund, an amount equal to the estimated  income tax benefit of the dividend
deduction associated with eligible shares in the Basic Account. Shares of Common
Stock  purchased with these  contributions  were allocated to the  participants'
Special Account.

PARTNERSHIP  ACCOUNT. For the years 1989 through 2005,  partnership  allocations
were  made  to  each  nonunion  participant's  Partnership  Account  as a  fixed
percentage of each eligible  participant's annual salary, plus, to the extent of
any  additional  value to be allocated in the plan year,  an amount based on the
ratio of the participant's annual compensation to the annual compensation of all
eligible participants.  Shares credited to participants' Partnership Accounts as
a fixed-percentage  partnership allocation for the years 1989 through 2001 had a
value  equal to 2% of  annual  compensation;  the  fixed-percentage  partnership
allocation  for the years 2002  through  2005 and  prorated  for the period from
January 1 through  September  30,  2006 was 3.5% of annual  compensation.  Since
October 1, 2006, the  fixed-percentage  partnership  allocation to each nonunion
participant  hired  before  October 1, 2006 has ranged  from 6% to 12% of annual
compensation   depending  on  the   participant's   age.  The   fixed-percentage
Partnership allocation to each nonunion participant hired on or after October 1,
2006 is 6% of annual compensation.

BARGAINING  UNIT ACCOUNT.  Quarterly  non-elective  allocations  are made to the
ALLETE  RSOP  Stock  Fund  equal  to 1% of  each  union  participant's  eligible
compensation.


7                          ALLETE 2006 RSOP Form 11-K



NOTE 1 - DESCRIPTION OF THE PLAN (CONTINUED)

MATCHING  ACCOUNT.  For  nonunion  participants  hired  before  October 1, 2006,
quarterly matching  allocations were made to the ALLETE RSOP Stock Fund equal to
50% of each nonunion participant's 401(k) before-tax contributions, disregarding
contributions in excess of 4% of the  participant's  periodic pay for the period
through October 1, 2006. Thereafter, quarterly matching allocations are equal to
100%  of  each  nonunion  participant's  401(k)  before-tax   contributions  and
effective January 1, 2007 Roth 401(k) contributions,  disregarding contributions
in excess of 4% of the participant's periodic pay for the period.

For nonunion  participants hired on or after October 1, 2006, quarterly matching
allocations  are  made to the  ALLETE  RSOP  Stock  Fund  equal  to 100% of each
nonunion participant's 401(k) before-tax  contributions and effective January 1,
2007 Roth 401(k)  contributions,  disregarding  contributions in excess of 5% of
the participant's periodic pay for the period.

RESULTS  SHARING  ACCOUNT.  Beginning with the results  sharing award earned for
2006,  allocations  are made to the ALLETE  RSOP Stock Fund equal to 50% of each
nonunion and union participant's Results Sharing Award.

FLORIDA WATER ACCOUNT.  Effective  October 30, 2006, $5.8 million of assets held
in the Florida  Water  Services  Corporation  Contributory  Profit  Sharing Plan
(Florida Water Plan) were merged with the RSOP.

CONTRIBUTIONS

PARTICIPANT CONTRIBUTIONS to the Plan consist of the following:

     -   BEFORE-TAX  CONTRIBUTIONS.  Before-tax  contributions consist of salary
         reduction  contributions,  results sharing  contributions  and flexible
         dollar contributions.  Total before-tax contributions in 2006 could not
         exceed  $15,000  for  participants  less  than  age 50 or  $20,000  for
         participants at least age 50, as permitted under Section 401(k) of the
         Internal Revenue Code (Code).

         -   SALARY REDUCTION CONTRIBUTIONS.  Salary reduction contributions are
             equal to an amount the participant has elected to reduce his or her
             compensation  pursuant to a salary reduction  agreement.

         -   RESULTS SHARING  CONTRIBUTIONS.  Results sharing  contributions are
             equal to the portion  (up to 50  percent)  of the  Results  Sharing
             Award  the  participant  irrevocably  elects  to  forgo  and  that,
             pursuant to the ALLETE Results Sharing Program,  would otherwise be
             paid to the participant.

     -   VOLUNTARY CONTRIBUTIONS (AFTER-TAX CONTRIBUTIONS).  Each participant is
         also  allowed to make  voluntary  after-tax  contributions  to the Plan
         through payroll  deductions.  Total voluntary  contributions  made by a
         participant may not exceed 25% of the participant's compensation in any
         pay period.

     -   ROLLOVERS.  Contributions  by  participants  may  also be made  through
         rollovers from other qualified plans or individual retirement accounts.

     -   ROTH 401(K) CONTRIBUTIONS. Participants may make the following types of
         contributions  to the  Plan on an  after-tax  basis in the form of Roth
         401(k) Contributions:

         -   ROTH SALARY  REDUCTION  CONTRIBUTIONS.  Effective  January 1, 2007,
             salary  reduction   contributions   are  equal  to  an  amount  the
             participant has elected to reduce his or her compensation  pursuant
             to a salary reduction agreement.

         -   ROTH RESULTS SHARING CONTRIBUTIONS. Beginning with the award earned
             for 2007,  results sharing  contributions  are equal to the portion
             (up  to  50%)  of  the  Results   Sharing  Award  the   participant
             irrevocably  elects  to forgo  and  that,  pursuant  to the  ALLETE
             Results   Sharing   Program,   would   otherwise  be  paid  to  the
             participant.

         Roth 401(k)  contributions are in lieu of part or all of the before-tax
         contributions participants are otherwise eligible to make.


                           ALLETE 2006 RSOP Form 11-K                          8



NOTE 1 - DESCRIPTION OF THE PLAN (CONTINUED)

EMPLOYER  CONTRIBUTIONS  for each year are paid to the Trustee either in cash or
in Common Stock.  Expenses incurred in discretionary  activities relating to the
design,  formation  and  modification  of the Plan  (commonly  characterized  as
"settlor" functions) are paid by the Companies.

VESTING AND FORFEITURE ACCOUNT

As of July 1, 2001, all  contributions  plus actual  earnings  thereon are fully
vested and  nonforfeitable.  In 2005, the Plan was amended to allow distribution
checks issued and outstanding for more than 180 days (unclaimed  benefits) to be
redeposited  into the Plan and treated as  forfeitures.  The forfeiture  account
consists of previously  forfeited  nonvested  accounts and  unclaimed  benefits,
totaling  $273,000 at December  31, 2006  ($30,000 at December  31, 2005) and is
invested in  RiverSource  Trust  Income  Fund II.  Dollars  from the  forfeiture
account  may be used to reduce  future Plan  expenses.  The  forfeiture  account
increased in 2006 primarily due to the merger of the Florida Water Plan into the
RSOP.

DISTRIBUTIONS AND WITHDRAWALS

A participant may elect, at any time, to receive in cash,  future dividends paid
on Common Stock  shares in their ALLETE RSOP Stock Fund Basic  Pre-1989 or Basic
Post-1989 Account and ALLETE Stock Fund.

Prior to termination, participants may withdraw, at any time, all or any part of
their:
     -   Plan accounts,  if the participant has attained age 59 1/2;
     -   After-tax account, regardless of the participant's age; or
     -   Pre-1989 Basic Account, regardless of the participant's age.

When participants  terminate  employment,  become disabled or die, they or their
beneficiaries may elect to receive all or any part of their Plan accounts.

TRANSFERS  TO  RETIREMENT  PLANS.  Upon  retirement,  participants  may elect to
transfer  their Plan  account  balances to the  Minnesota  Power and  Affiliated
Companies  Retirement Plan A or Plan B if the participant is receiving a benefit
from one of these retirement  plans. The amount of transfers to these retirement
plans totaled $5,581,294 for 2006.

LOAN  PROGRAM.  The Plan  allows  participants  to borrow  money from their Plan
accounts.  The maximum amount a participant may borrow is equal to the lesser of
(a) the  participant's  aggregate  before-tax  account,  after-tax  account  and
rollover account balances,  (b) 50% of their total Plan balance, or (c) $50,000,
less the largest outstanding loan balance owed in the prior 12-month period. The
loans may not be less than $1,000.  The loans are for terms up to five years for
a general-purpose loan and ten years for the acquisition of a primary residence.
A fixed  interest  rate of the prime  rate plus 1% on the first day of the month
that the loan is originated  is charged  until the loan is repaid.  As loans are
repaid, generally through payroll deductions, principal and interest amounts are
re-deposited into the participant's Plan accounts.  Participants are required to
pay a $50 loan application fee to cover the cost of processing the loan.

PLAN TERMINATION

The  Companies  reserve  the  right to  reduce,  suspend  or  discontinue  their
contributions to the Plan, at any time, or to terminate the Plan in its entirety
subject to the provisions of ERISA and the Code. If the Plan is terminated,  all
of the account  balances of the  participants  will be distributed in accordance
with the terms of the Plan.

NOTE 2 - SUMMARY OF ACCOUNTING POLICIES

The Plan uses the accrual basis of accounting and, accordingly,  reflects income
in the year earned and  expenses  when  incurred.  Common  stock and mutual fund
investments  are  reported  at their fair value based on quoted  market  prices.
Collective fund  investments are reported at net asset value which  approximates
fair  value.  Participants'  loans are  reported at  estimated  fair value which
represents outstanding principal and any related accrued interest.

The preparation of financial statements in conformity with accounting principles
generally  accepted in the United States of America requires  management to make
estimates and assumptions that affect the


9                          ALLETE 2006 RSOP Form 11-K



NOTE 2 - SUMMARY OF ACCOUNTING POLICIES (CONTINUED)

reported amounts of assets,  liabilities and changes therein,  and disclosure of
contingent  assets  and  liabilities  at the date of the  financial  statements.
Actual results could differ from those estimates.

The Plan  presents,  in the  statement  of changes in net assets  available  for
benefits,  the  net  appreciation  (depreciation)  in  the  fair  value  of  its
investments  which  consists  of  the  realized  gains  or  losses  on  disposed
investments and the unrealized appreciation  (depreciation) on those investments
owned at year end.

The Plan invests in various  funds that are a combination  of stocks,  bonds and
other investment securities.  Investment securities are exposed to various risks
such as  interest  rate,  market  and  credit  risks.  Due to the  level of risk
associated  with  certain  investment  securities,  it  is at  least  reasonably
possible that changes in the values of investment  securities  will occur in the
near term and that such changes could materially  affect the amounts reported in
the statement of net assets available for benefits.

NOTE 3 - FEDERAL INCOME TAX STATUS

A favorable  determination  letter dated March 23, 2004,  was obtained  from the
Internal  Revenue  Service  stating  that the  RSOP,  as  amended  and  restated
effective  January 1, 2002,  qualified as an employee stock ownership plan and a
profit sharing plan under Section 401(a) of the Code.

An  application  for a new  determination  letter for the RSOP,  as amended  and
restated  effective January 1, 2007, was filed with the Internal Revenue Service
on January  31,  2007.  The  Committee  continues  to  believe  that the Plan is
currently  designed  and  being  operated  in  compliance  with  the  applicable
requirements  of the Code.  Therefore,  no  provision  for income taxes has been
included in the Plan's financial statements.

NOTE 4 - INVESTMENTS




FAIR/NET ASSET VALUE OF INVESTMENTS
REPRESENTING 5% OR MORE OF ASSETS
AT DECEMBER 31,                                                                          2006                 2005
-----------------------------------------------------------------------------------------------------------------------
Thousands
                                                                                                      
ALLETE RSOP Stock Fund                                                                 $200,298             $198,783
RiverSource Trust Income Fund II                                                        $45,093              $44,356
ALLETE Stock Fund                                                                       $28,308              $28,499
Vanguard Institution Index Fund                                                         $28,092              $26,446
The Oakmark Equity and Income Fund                                                      $21,430              $20,438
-----------------------------------------------------------------------------------------------------------------------




                                                                 NUMBER OF                                   FAIR
ALLETE RSOP STOCK FUND                                            SHARES                 COST                VALUE
-----------------------------------------------------------------------------------------------------------------------
Thousands
                                                                                                   
December 31, 2006        Allocated    - Common Stock               1,766                $48,958              $82,184
                                        Money Market                                        897                  897
-----------------------------------------------------------------------------------------------------------------------

                                                                                         49,855               83,081
-----------------------------------------------------------------------------------------------------------------------

                         Unallocated  - Common Stock               2,475                 37,993              115,192
                                        Money Market                                      2,025                2,025
-----------------------------------------------------------------------------------------------------------------------

                                                                                         40,018              117,217
-----------------------------------------------------------------------------------------------------------------------

                                                                                        $89,873             $200,298
-----------------------------------------------------------------------------------------------------------------------

December 31, 2005        Allocated    - Common Stock               1,855                $48,615              $81,606
                                        Money Market                                        775                  775
-----------------------------------------------------------------------------------------------------------------------

                                                                                         49,390               82,381
-----------------------------------------------------------------------------------------------------------------------

                         Unallocated  - Common Stock               2,612                 40,103              114,952
                                        Money Market                                      1,450                1,450
------------------------------------------------------------------------------------------------------------------------

                                                                                         41,553              116,402
-----------------------------------------------------------------------------------------------------------------------

                                                                                        $90,943             $198,783
-----------------------------------------------------------------------------------------------------------------------


                           ALLETE 2006 RSOP Form 11-K                         10


NOTE 4 - INVESTMENTS (CONTINUED)

For the ALLETE  Stock Fund and the ALLETE  RSOP Stock Fund,  each  participant's
account  value is  determined  on a unit basis and consists of both Common Stock
and cash  invested  in a money  market  fund.  The unit value is  adjusted  each
business day to reflect investment results including cash.



                                           ALLETE STOCK FUND                              ALLETE RSOP STOCK FUND
                                      --------------------------------------------------------------------------------
AT DECEMBER 31,                        2006                 2005                         2006                 2005
-----------------------------------------------------------------------------------------------------------------------
Thousands
                                                                                                 

Number of Units                         4,834                5,139                       13,348               13,996

Common Stock                          $28,167              $27,989                      $82,184              $81,606
Money Market                              141                  510                          897                  775
-----------------------------------------------------------------------------------------------------------------------

Net Value                             $28,308              $28,499                      $83,081              $82,381
-----------------------------------------------------------------------------------------------------------------------


NOTE 5 - REPAYMENT OF LOAN

The Trustee  repays  principal and interest on the RSOP Loan with dividends paid
on the shares of Common  Stock in the Loan  Account  and with  certain  employer
contributions  to the Plan.  The shares of Common Stock  acquired by the Trustee
are held in the Loan Account, and allocated to the accounts of Plan participants
as the RSOP Loan is repaid.

The RSOP Loan was obtained from ALLETE. There were 2,475,120  unallocated shares
of  Common  Stock in the Plan  pledged  as  collateral  at  December  31,  2006.
Prepayments of principal can be made without  penalty.  The lender has no rights
to shares that are allocated under the Plan.

                               PRINCIPAL PAYMENTS
                              $70 MILLION 6% LOAN
                        ----------------------------------
                                    Thousands

                        2007                       $ 1,700
                        2008                         1,800
                        2009                         1,900
                        2010                         2,000
                        2011                         2,100
                        2012                        10,318
                        2013                        12,500
                        2014                        12,500
                        2015                        12,500
                        2016                        12,500
                        ----------------------------------

                                                   $69,818
                        ----------------------------------

NOTE 6 - DEPARTMENT OF LABOR EXAMINATION

In October 2005, the U.S.  Department of Labor (DOL) began an examination of the
RSOP and in June 2006 the DOL advised the Company of its  findings.  In response
to the DOL's request,  the Company and Trustee made several minor  amendments to
the RSOP,  promissory  note and trust  agreement.  The  Company  reimbursed  the
Trustee for administrative  expenses in the amount of $2,371 including interest.
The Company believes that it has satisfied all of the DOL's requests.


11                         ALLETE 2006 RSOP Form 11-K



                                                                      SCHEDULE I

                                        MINNESOTA POWER AND AFFILIATED COMPANIES
                                       RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN
                               PLAN NUMBER 002 / EMPLOYER IDENTIFICATION NUMBER 41-0418150
                                        SCHEDULE OF ASSETS (HELD AT END OF YEAR)
                                              FORM 5500 SCHEDULE H LINE 4I
                                                  AT DECEMBER 31, 2006
                                                        Thousands

(a)                      (b)                                            (c)                      (d)          (e)

                                                                   DESCRIPTION OF                           CURRENT
                   IDENTITY OF ISSUER                                INVESTMENT                COST      VALUE
-----------------------------------------------------------------------------------------------------------------------
                                                                                                   
    ALLETE RSOP STOCK FUND
  *  ALLETE, Inc.                                          Common Stock - 4,241 Shares         $86,951      $197,376
  *  RiverSource Money Market II                           Money Market                          2,922         2,922
-----------------------------------------------------------------------------------------------------------------------

          Total ALLETE RSOP Stock Fund                                                         $89,873       200,298
-----------------------------------------------------------------------------------------------------------------------

    ALLETE STOCK FUND
  *  ALLETE, Inc.                                          Common Stock - 606 Shares                          28,167
     RiverSource Money Market II                           Money Market                                          141
-----------------------------------------------------------------------------------------------------------------------

          Total ALLETE Stock Fund                                                                             28,308
-----------------------------------------------------------------------------------------------------------------------

    COLLECTIVE FUND SECURITIES
  *  RiverSource Trust Bond Index Fund II                  Collective Fund - 399 Shares                        6,029
  *  RiverSource Trust Income Fund II                      Collective Fund - 1,692 Shares                     45,093
  *  RiverSource Trust Small Cap Equity Index Fund II      Collective Fund - 117 Shares                        2,827
-----------------------------------------------------------------------------------------------------------------------

          Total Collective Fund Securities                                                                    53,949
-----------------------------------------------------------------------------------------------------------------------

    MUTUAL FUND SECURITIES
     Artisan International Fund                            Mutual Fund - 326 Shares                            9,446
     Dodge & Cox International                             Mutual Fund - 159 Shares                            6,960
     Dodge & Cox Stock Fund                                Mutual Fund - 112 Shares                           17,112
     Highmark Small Cap Value Fund                         Mutual Fund - 659 Shares                           11,697
     Mainstay Large Cap Growth Fund                        Mutual Fund - 673 Shares                            3,977
     The Oakmark Equity and Income Fund                    Mutual Fund - 828 Shares                           21,430
     Oppenheimer Developing Markets Fund                   Mutual Fund - 483 Shares                           19,921
     Vanguard Institutional Index Fund                     Mutual Fund - 217 Shares                           28,092
     Vanguard Mid-Cap - Institutional Fund                 Mutual Fund - 635 Shares                           12,602
     William Blair Small Cap Growth Fund                   Mutual Fund - 442 Shares                           11,476
-----------------------------------------------------------------------------------------------------------------------

          Total Mutual Fund Securities                                                                       142,713
-----------------------------------------------------------------------------------------------------------------------

    SELF-MANAGED BROKERAGE ACCOUNTS                                                                            3,800
-----------------------------------------------------------------------------------------------------------------------

  * PARTICIPANT LOANS                                      Loans Receivable from
                                                           Participants - 5% to 13.65%                         2,744
-----------------------------------------------------------------------------------------------------------------------

    TOTAL INVESTMENTS                                                                                       $431,812
-----------------------------------------------------------------------------------------------------------------------
*  Party in Interest

---------------------

 Not required for participant directed transactions.


                           ALLETE 2006 RSOP Form 11-K                         12



                                   SIGNATURES

Pursuant to the  requirements  of the Securities  Exchange Act of 1934,  ALLETE,
Inc., as plan administrator,  has duly caused this annual report to be signed on
its behalf by the undersigned hereunto duly authorized.


                                    MINNESOTA POWER AND AFFILIATED COMPANIES
                                   RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN

                               By:     ALLETE, Inc., its Plan Administrator
                               -------------------------------------------------



June 25, 2007                                   Donald J. Shippar
                               -------------------------------------------------

                                                Donald J. Shippar
                                Chairman, President and Chief Executive Officer


13                         ALLETE 2006 RSOP Form 11-K



                               INDEX TO EXHIBITS


EXHIBIT
-------

   a   -    Consent of Independent Registered Public Accounting Firm

                           ALLETE 2006 RSOP Form 11-K



                                                                       EXHIBIT a


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


We consent to the incorporation by reference in the Registration  Statement (No.
333-124455) on Form S-8 of ALLETE, Inc. of our report dated June 15, 2007,  with
respect to the statements of net assets  available for benefits of the Minnesota
Power and Affiliated  Companies  Retirement Savings and Stock Ownership Plan for
the years ended December 31, 2006 and 2005, the related statements of changes in
net assets  available for benefits for the year ended December 31, 2006, and the
related supplemental  schedules as of December 31, 2006, which report appears in
the December 31, 2006,  annual  report on Form 11-K of the  Minnesota  Power and
Affiliated Companies Retirement Savings and Stock Ownership Plan.


Reilly, Penner & Benton LLP

Reilly, Penner & Benton LLP
Milwaukee, Wisconsin
June 15, 2007