Exhibit 1


                $100,000,000 Series C Floating Rate Senior Notes

                               due March 28, 2002

                            MISSISSIPPI POWER COMPANY

                             UNDERWRITING AGREEMENT

                                                              March 22, 2000

Salomon Smith Barney Inc.
390 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

                  Mississippi Power  Company, a Mississippi corporation (the
"Company"), confirms its  agreement (the "Agreement")  with you (the
"Underwriter"),  with respect to the sale by the Company and the purchase by the
Underwriter,  of  $100,000,000  principal amount of the Series C Floating  Rate
Senior Notes due March 28, 2002 (the "Senior Notes").

                  The Company understands that the Underwriter proposes to make
a public offering of the Senior Notes as soon as the Underwriter deems advisable
after this Agreement has been executed and  delivered.  The Senior Notes will be
issued pursuant to an indenture, dated as of May 1, 1998 (the "Base Indenture"),
between the Company and Bankers Trust Company,  as trustee (the "Trustee"), as
heretofore supplemented and amended  and as to be  further supplemented and
amended by a third  supplemental indenture,  dated March 28, 2000,  to the Base
Indenture relating  to the Senior Notes  (the "Supplemental Indenture,"  and
together with the Base Indenture and any other amendments or supplements
thereto, the "Indenture"), between the Company and the Trustee.

                  Pursuant to a Calculation Agent Agreement, dated as of March
28, 2000 (the "Calculation  Agent  Agreement"),  between the Company and Bankers
Trust Company,  as calculation agent thereunder (the "Calculation  Agent"),  the
Company has engaged the Calculation  Agent to perform certain services  with
respect to the floating interest rate on the Senior Notes.

SECTION 1.        REPRESENTATIONS AND WARRANTIES.  The Company represents and
warrants to the Underwriter as follows:

     (a)  A   registration   statement   on  Form  S-3  (File  Nos.   333-45069,
          333-45069-01  and  333-45069-02),  in respect of the Senior  Notes and
          certain  other  securities  has been  prepared and filed in accordance
          with the  provisions  of the  Securities  Act of 1933, as amended (the
          "1933  Act"),  with  the  Securities  and  Exchange   Commission  (the
          "Commission");  such  registration  statement  and any  post-effective



          amendment  thereto,  each in the form  heretofore  delivered  or to be
          delivered  to the  Underwriter,  has been  declared  effective  by the
          Commission  in such  form  (except  that  copies  of the  registration
          statement,  as amended, and any post-effective  amendment delivered to
          the  Underwriter  need not  include  exhibits  but shall  include  all
          documents  incorporated  by  reference  therein);  and no  stop  order
          suspending the effectiveness of such  registration  statement has been
          issued and no  proceeding  for that purpose has been  initiated or, to
          the best knowledge of the Company,  threatened by the Commission  (any
          preliminary  prospectus,  as supplemented by a preliminary  prospectus
          supplement,  included in such registration statement or filed with the
          Commission pursuant to Rule 424(a) of the rules and regulations of the
          Commission under the 1933 Act, being hereinafter called a "Preliminary
          Prospectus");  such  registration  statement,  as it became effective,
          including  the  exhibits  thereto and all  documents  incorporated  by
          reference  therein  pursuant  to Item 12 of Form S-3 at the time  such
          registration statement became effective,  being hereinafter called the
          "Registration Statement"; the prospectus relating to the Senior Notes,
          in the form in which it was included in the Registration  Statement at
          the  time  it  became   effective,   being   hereinafter   called  the
          "Prospectus";  any reference  herein to any Preliminary  Prospectus or
          the  Prospectus  shall be deemed to refer to and include the documents
          incorporated  by  reference  therein  pursuant  to Item 12 of Form S-3
          under the 1933 Act, as of the date of such  Preliminary  Prospectus or
          Prospectus,  as the case may be; any  reference  to any  amendment  or
          supplement to any  Preliminary  Prospectus or the Prospectus  shall be
          deemed to refer to and include any  documents  filed after the date of
          such Preliminary  Prospectus or Prospectus,  as the case may be, under
          the Securities  Exchange Act of 1934, as amended (the "1934 Act"), and
          incorporated   by  reference  in  such   Preliminary   Prospectus   or
          Prospectus,  as the case may be; any reference to any amendment to the
          Registration  Statement  shall be deemed to refer to and  include  any
          annual report of the Company filed  pursuant to Section 13(a) or 15(d)
          of the 1934 Act after the effective date of the Registration Statement
          that is incorporated by reference in the Registration  Statement;  and
          the  Prospectus  as  amended  or  supplemented  in  final  form  by  a
          prospectus  supplement  relating  to the  Senior  Notes in the form in
          which it is filed with the  Commission,  pursuant to Rule 424(b) under
          the 1933 Act in  accordance  with Section 3(f) hereof,  including  any
          documents  incorporated  by  reference  therein as of the date of such
          filing, being hereinafter called the "Final Supplemented Prospectus".

     (b)  The documents  incorporated by reference in the Registration Statement
          or Prospectus,  when they were filed with the Commission,  complied in
          all material  respects with the applicable  provisions of the 1934 Act
          and the rules and regulations of the Commission thereunder,  and as of
          such time of filing,  when read together with the Prospectus,  none of
          such  documents  contained an untrue  statement of a material  fact or
          omitted  to state a material  fact  required  to be stated  therein or
          necessary  to  make  the  statements  therein,  in  the  light  of the
          circumstances  under  which they were made,  not  misleading;  and any
          further  documents  so filed  and  incorporated  by  reference  in the
          Prospectus or any further amendment or supplement  thereto,  when such
          documents are filed with the  Commission,  will comply in all material
          respects with the applicable  provisions of the 1934 Act and the rules


                                       2



          and  regulations of the Commission  thereunder and, when read together
          with the  Prospectus as it otherwise  may be amended or  supplemented,
          will not  contain an untrue  statement  of a material  fact or omit to
          state a material  fact  required to be stated  therein or necessary to
          make the statements  therein,  in the light of the circumstances under
          which they were made, not misleading, except that the Company makes no
          warranty or representation to the Underwriter with respect to: (A) any
          statements or omissions  made in reliance upon and in conformity  with
          information  furnished  in writing to the  Company by the  Underwriter
          expressly  for use in the Final  Supplemented  Prospectus;  or (B) any
          information set forth in the Final  Supplemented  Prospectus under the
          caption  "Description  of the Series C Senior Notes - Book-Entry  Only
          Issuance -- The Depository Trust Company".

     (c)  The Registration Statement,  the Prospectus and the Final Supplemented
          Prospectus  comply and any further  amendments or  supplements  to the
          Registration Statement or the Prospectus, when any such post-effective
          amendments are declared  effective or  supplements  are filed with the
          Commission,  as the case may be, will comply, in all material respects
          with the applicable provisions of the 1933 Act, the 1934 Act, the 1939
          Act (hereinafter defined) and the General Rules and Regulations of the
          Commission  thereunder  and  do  not  and  will  not,  (i)  as of  the
          applicable  effective  date as to the  Registration  Statement and any
          amendment thereto, and (ii) as of the applicable filing date as to the
          Final Supplemented Prospectus and any Prospectus as further amended or
          supplemented,  contain an untrue  statement of a material fact or omit
          to state a material  fact  necessary  in order to make the  statements
          therein, in the light of the circumstances under which they were made,
          not  misleading;  except  that  the  Company  makes no  warranties  or
          representations  with  respect  to (A) that  part of the  Registration
          Statement which shall  constitute the Statements of Eligibility  (Form
          T-1)  (collectively,  the "Form T-1") under the Trust Indenture Act of
          1939, as amended (the "1939 Act"), (B) statements or omissions made in
          the  Registration  Statement or the Final  Supplemented  Prospectus in
          reliance upon and in conformity with information  furnished in writing
          to the Company by the Underwriter expressly for use therein or (C) any
          information set forth in the Final  Supplemented  Prospectus under the
          caption  "Description  of the Series C Senior Notes - Book-Entry  Only
          Issuance -- The Depository Trust Company".

(d)      With respect to the Registration  Statement,  the conditions for use of
         Form S-3, as set forth in the General Instructions  thereof,  have been
         satisfied.

(e)      Since  the  respective  dates as of which  information  is given in the
         Registration Statement and the Final Supplemented Prospectus, except as
         otherwise stated therein,  there has been no material adverse change in
         the business, properties or financial condition of the Company.

(f)      The Company is a corporation duly organized and existing under the laws
         of the State of Mississippi, is duly qualified to carry on its business
         as a foreign  corporation  under the laws of the State of Alabama,  and

                                       3


         has due corporate  authority to carry on the public utility business in
         which it is engaged and to own and operate the properties used by it in
         such  business,  to enter into and perform its  obligations  under this
         Agreement  and the  Indenture and to issue and sell the Senior Notes to
         the Underwriter.

     (g)  This Agreement has been duly authorized, executed and delivered by the
          Company.

     (h)  The  Indenture  has been duly  authorized  by the Company  and, on the
          Closing  Date,  will have  been duly  executed  and  delivered  by the
          Company,  and, assuming due  authorization,  execution and delivery of
          the Indenture by the Trustee, the Indenture will, on the Closing Date,
          constitute a valid and binding obligation of the Company,  enforceable
          against the Company in accordance  with its terms except to the extent
          that enforcement thereof may be limited by (1) bankruptcy, insolvency,
          reorganization,   receivership,  liquidation,  fraudulent  conveyance,
          moratorium or other similar laws affecting creditors' rights generally
          or (2) general principles of equity (regardless of whether enforcement
          is   considered   in  a   proceeding   at  law  or  in  equity)   (the
          "Enforceability  Exceptions");  the  Indenture  will  conform  in  all
          material respects to all statements  relating thereto contained in the
          Final Supplemented Prospectus; and, on the Closing Date, the Indenture
          will have been duly qualified under the 1939 Act.

     (i)  The  issuance  and  delivery  of  the  Senior  Notes  have  been  duly
          authorized by the Company and, on the Closing  Date,  the Senior Notes
          will have been duly executed by the Company and, when authenticated in
          the manner provided for in the Indenture and delivered against payment
          therefor  as  described  in the Final  Supplemented  Prospectus,  will
          constitute  valid and  legally  binding  obligations  of the  Company,
          enforceable against the Company in accordance with their terms, except
          to  the  extent  that  enforcement  thereof  may  be  limited  by  the
          Enforceability  Exceptions,  will be in the form  contemplated by, and
          entitled to the  benefits  of, the  Indenture  and will conform in all
          material  respects  to all  statements  relating  thereto in the Final
          Supplemented Prospectus.

     (j)  The  Calculation  Agent  Agreement  has been  duly  authorized  by the
          Company  and, on the Closing  Date,  will have been duly  executed and
          delivered by the Company,  and, assuming due authorization,  execution
          and delivery of the  Calculation  Agent  Agreement by the  Calculation
          Agent,  the  Calculation  Agent  Agreement  will, on the Closing Date,
          constitute a valid and binding obligation of the Company,  enforceable
          against the Company in accordance with its terms, except to the extent
          that  enforcement   thereof  may  be  limited  by  the  Enforceability
          Exceptions.

     (k)  The  execution,  delivery  and  performance  by the  Company  of  this
          Agreement,  the  Calculation  Agent  Agreement,  the Indenture and the
          Senior Notes and the  consummation by the Company of the  transactions
          contemplated herein and therein and compliance by the Company with its
          obligations  hereunder and thereunder  shall have been duly authorized

                                       4



          by all  necessary  corporate  action on the part of the Company and do
          not and will not result in any  violation  of the charter or bylaws of
          the  Company,  and do not and will not conflict  with,  or result in a
          breach of any of the terms or  provisions  of, or constitute a default
          under, or result in the creation or imposition of any lien,  charge or
          encumbrance  upon any property or assets of the Company  under (A) any
          contract,  indenture,  mortgage, loan agreement,  note, lease or other
          agreement or instrument to which the Company is a party or by which it
          may be bound or to which any of its properties may be subject  (except
          for conflicts,  breaches or defaults which would not,  individually or
          in the aggregate,  be materially  adverse to the Company or materially
          adverse to the transactions  contemplated by this  Agreement),  or (B)
          any existing  applicable  law, rule,  regulation,  judgment,  order or
          decree  of any  government,  governmental  instrumentality  or  court,
          domestic or foreign,  or any regulatory body or administrative  agency
          or other  governmental body having  jurisdiction over the Company,  or
          any of its properties.

     (l)  No  authorization,   approval,  consent  or  order  of  any  court  or
          governmental  authority or agency is necessary in connection  with the
          issuance  and  sale  by  the  Company  of  the  Senior  Notes  or  the
          transactions by the Company contemplated in this Agreement, except (A)
          such  as may  be  required  under  the  1933  Act  or  the  rules  and
          regulations  thereunder;  (B) such as may be required under the Public
          Utility Holding Company Act of 1935, as amended (the "1935 Act");  (C)
          the  qualification  of the Indenture  under the 1939 Act; and (D) such
          consents, approvals,  authorizations,  registrations or qualifications
          as may be required under state securities or Blue Sky laws.

            SECTION 2. SALE AND DELIVERY TO THE UNDERWRITER;  CLOSING.
          ---------------------------------------------------------------

          (a)  On  the  basis  of  the  representations  and  warranties  herein
               contained  and  subject  to the terms and  conditions  herein set
               forth,  the Company  agrees to sell to the  Underwriter,  and the
               Underwriter  agrees to purchase  from the  Company,  $100,000,000
               principal  amount of Senior  Notes at a price equal to 99.971% of
               the principal amount thereof.

          (b)  Payment for and  delivery of  certificates  for the Senior  Notes
               shall be made at the offices of  Troutman  Sanders  LLP,  Bank of
               America Plaza, 600 Peachtree Street,  N.E., Suite 5200,  Atlanta,
               Georgia at 10:00 A.M.,  Atlanta  time,  on March 28, 2000 or such
               other  time,  place  or  date  as  shall  be  agreed  upon by the
               Underwriter  and the  Company  (such time and date of payment and
               delivery being herein called the "Closing  Date").  Payment shall
               be made to the Company by wire  transfer in federal  funds at the
               Closing  Date  against  delivery  of  the  Senior  Notes  to  the
               Underwriter.

                  The delivery of the Senior Notes shall be made in fully
registered form, registered in the name of CEDE & CO., to the offices of The
Depository Trust Company in New York,  New York or its designee, and the
Underwriter shall accept such delivery.

                                       5


                  The certificate(s) for the Senior Notes will be made available
for examination by the Underwriter not later than 12:00 Noon, New York time, on
the last business day prior to the Closing Date.

                  SECTION 3. COVENANTS OF THE COMPANY.  The Company
covenants with the Underwriter as follows:

        (a) The Company, on or prior to the Closing Date, will deliver to the
Underwriter conformed copies of the Registration Statement as originally filed
and of all amendments thereto,  heretofore or hereafter made,  including any
post-effective amendment (in each case including all exhibits filed  therewith,
and including  unsigned copies of each consent and  certificate  included
therein or filed as an exhibit thereto, except exhibits incorporated by
reference,  unless specifically requested).  As soon as the Company is advised
thereof,  it will advise the Underwriter orally of the issuance of any stop
order under the 1933 Act with respect to the Registration Statement,  or the
institution of any proceedings therefor,  of which the Company shall
have received notice,  and will use its best efforts to prevent the issuance of
any such stop order and to secure the prompt removal thereof, if issued.  The
Company will deliver to the Underwriter sufficient conformed copies of the
Registration Statement,  the Prospectus and the Final Supplemented Prospectus
and of all supplements and amendments thereto (in each case without exhibits)
for  distribution to the Underwriter and, from time to time, as many copies of
the Prospectus and the Final Supplemented  Prospectus as the Underwriter may
reasonably  request for the purposes  contemplated by the 1933 Act or the 1934
Act.

        (b) The Company will furnish the Underwriter with copies of each
amendment and supplement to the Final Supplemented Prospectus relating to the
offering of the Senior Notes in such quantities as the Underwriter may from
time to time reasonably  request.  If, during the period (not exceeding nine
months) when the delivery of a prospectus shall be required by law in connection
with the sale of any Senior Notes by the  Underwriter,  any event relating to
or affecting the Company, or of which the Company shall be advised in writing by
the Underwriter, shall occur,  which in the opinion of the Company or of
Underwriter's  counsel should be set forth in a supplement to or an amendment of
the Final Supplemented Prospectus in order to make the Final Supplemented
Prospectus not misleading in the light of the circumstances when it is
delivered,  or if for any other reason it shall be necessary during such period
to amend or supplement the Final Supplemented Prospectus or to file under the
1934 Act any document incorporated by reference in the Preliminary Prospectus or
Prospectus in order to comply with the 1933 Act or the 1934  Act,  the  Company
forthwith will (i)  notify the Underwriter to suspend solicitation of purchases
of the Senior Notes and (ii) at its expense,  make any such filing or prepare
and furnish to the Underwriter a reasonable  number of copies of a supplement or
supplements or an amendment or amendments to the Final Supplemented Prospectus
which will supplement or amend the Final Supplemented Prospectus so that, as
supplemented or amended, it will not  contain any untrue statement of a


                                       6



material fact or omit to state any material fact necessary in order to make the
statements therein, in the light of the circumstances when the Final
Supplemented Prospectus is delivered,  not misleading or which will effect any
other necessary compliance.  In case the Underwriter is required to deliver a
prospectus in connection with the sale of any Senior Notes after the expiration
of the period specified in the preceding sentence, the Company, upon the request
of the Underwriter,  will furnish to the Underwriter,  at the expense of the
Underwriter,  a reasonable quantity of a supplemented or amended  prospectus,
or supplements or amendments to the Final Supplemented Prospectus, complying
with Section 10(a) of the 1933 Act.  During the period specified in the second
sentence of this subsection, the Company will continue to prepare and file with
the Commission on a timely basis all documents or amendments required under the
1934 Act and the rules and regulations thereunder;  provided, that the Company
shall not file such documents or amendments without also furnishing copies
thereof prior to such filing to the Underwriter and Dewey Ballantine LLP.

        (c)  The Company will endeavor, in cooperation with the Underwriter, to
qualify the Senior  Notes for  offering  and sale under the  applicable
securities  laws of such  states  and the  other  jurisdictions  of the
United States as the Underwriter may designate; provided, however, that
the Company shall not be obligated to qualify as a foreign  corporation
in any  jurisdiction  in  which  it is not so  qualified  or to  file a
consent to service  of process or to file  annual  reports or to comply
with any other  requirements  in  connection  with  such  qualification
deemed by the Company to be unduly burdensome.

        (d) The Company will make generally available to its security holders as
soon as  practicable  but not later than 45 days after the close of the period
covered thereby,  an earnings statement of the Company (in form complying with
the provisions of Rule 158 of the rules and regulations under the 1933 Act)
covering a twelve-month period beginning not later than the first day of the
Company's fiscal quarter next following the "effective date" (as defined in Rule
158) of the Registration Statement.

        (e) During a period of 15 days from the date of this Agreement, the
Company will not, without the Underwriter's prior written consent,  directly or
indirectly,  sell, offer to sell, grant any option for the sale of, or
otherwise dispose of, any Senior Notes or any security convertible into
or exchangeable into or exercisable  for the Senior Notes or any debt
securities substantially similar to the Senior Notes  (except for the
Senior Notes issued pursuant to this Agreement).

        (f) As soon as practicable after the date of this Agreement  and in any
event within the time prescribed by Rule 424 under the 1933 Act, to
file the Final Supplemented Prospectus with the Commission and to
advise the Underwriter of such filing and to confirm such advice in
writing.

                                       7





          SECTION 4.  PAYMENT OF  EXPENSES.  The Company will pay all expenses
incidental to the  performance  of its  obligations under this  Agreement,
including  but not limited to, the  expenses of (i) the printing and filing
of the  Registration  Statement as originally  filed and of each  amendment
thereto, (ii) the preparation,  issuance and delivery of the certificate(s)
for the Senior  Notes,  (iii) the fees and  disbursements  of the Company's
counsel and accountants,  (iv) the  qualification of the Senior Notes under
securities  laws in accordance  with the provisions of Section 3(c) hereof,
including filing fees and the reasonable fees and  disbursements of counsel
for the  Underwriter  in connection  therewith  and in connection  with the
preparation of any blue sky survey (such fees and  disbursements of counsel
shall not exceed $3,500),  (v) the printing and delivery to the Underwriter
of copies of the  Registration  Statement as  originally  filed and of each
amendment thereto and of the Prospectus,  the Final Supplemented Prospectus
and any amendments or supplements  thereto,  (vi) the printing and delivery
to the  Underwriter of copies of any blue sky survey,  (vii) the fee of the
National  Association of Securities  Dealers,  Inc. in connection  with its
review of the  offering  contemplated  by this  Agreement,  if  applicable,
(viii) the fees and  expenses  of the Trustee  and the  Calculation  Agent,
including  the fees and  disbursements  of counsel  for the Trustee and the
Calculation Agent in connection with the Calculation  Agent Agreement,  the
Indenture  and the Senior Notes,  (ix) any fees payable in connection  with
the rating of the Senior  Notes,  (x) the cost and charges of any  transfer
agent or registrar  and (xi) the cost of  qualifying  the Senior Notes with
The Depository Trust Company.

                  Except as otherwise provided in Section 9 hereof,  the
Underwriter  shall pay all other expenses incurred by it in connection with its
offering of the Senior Notes including fees and disbursements of its counsel,
Dewey Ballantine LLP.

                  SECTION 5.  CONDITIONS OF UNDERWRITER'S OBLIGATIONS.   The
obligations of the Underwriter to purchase and pay for the Senior Notes are
subject to the following conditions:

               (a)  No  stop  order   suspending   the   effectiveness   of  the
          Registration  Statement  shall be in effect on the Closing Date and no
          proceedings  for that  purpose  shall  be  pending  before,  or to the
          knowledge of the Company  threatened  by, the Commission on such date.
          If filing  of the Final  Supplemented  Prospectus,  or any  supplement
          thereto,  is  required  pursuant to Rule 424,  the Final  Supplemented
          Prospectus,  and any such  supplement,  shall  have been  filed in the
          manner and within the time period required by Rule 424.

               (b)  Any  required  orders  of  the  Commission   permitting  the
          transactions  contemplated hereby substantially in accordance with the
          terms and  conditions  hereof  shall be in full  force and  effect and
          shall  contain no provision  unacceptable  to the  Underwriter  or the
          Company  (but  all  provisions  of such  order  or  orders  heretofore
          entered,  copies  of  which  have  heretofore  been  delivered  to the
          Underwriter,  are deemed acceptable to the Underwriter and the Company
          and all provisions of such order or orders hereafter  entered shall be
          deemed  acceptable to the Underwriter and the Company unless within 24
          hours  after  receiving  a copy of any such  order  any  party to this
          Agreement  shall give  notice to the other  parties to the effect that
          such order contains an unacceptable provision).

                                       8



               (c) On the Closing Date the Underwriter shall have received:

                    (1) The  opinion, dated the Closing  Date, of Eaton and
               Cottrell, P.A. general counsel for the Company, substantially in
               the form attached hereto as Schedule II-A.

                    (2) The opinion, dated the Closing Date, of Troutman Sanders
               LLP, counsel for the Company,  substantially in the form attached
               hereto as Schedule II-B.

                    (3) The opinion, dated the Closing  Date, of White & Case,
               counsel to the Trustee and the Calculation  Agent, substantially
               in the form attached hereto as Schedule III.

                    (4) The  opinion,  dated as of the  Closing  Date,  of Dewey
               Ballantine LLP, counsel for the Underwriter, substantially in the
               form attached hereto as Schedule IV.

                    (5) At the Closing  Date,  there shall not have been,  since
               the  date  hereof  or  since  the  respective  dates  as of which
               information is given in the Registration  Statement and the Final
               Supplemented  Prospectus,  any  material  adverse  change  in the
               business,  properties  or  financial  condition  of the  Company,
               whether or not arising in the ordinary  course of  business,  and
               the  Underwriter   shall  have  received  a  certificate  of  the
               President or any Vice  President of the Company,  and dated as of
               the Closing  Date,  to the effect that (i) there has been no such
               material adverse change,  (ii) the representations and warranties
               in Section 1 hereof are true and correct  with the same force and
               effect as though  expressly  made at and as of the Closing  Date,
               (iii) the Company has complied with all  agreements and satisfied
               all  conditions  on its part to be  performed  or satisfied on or
               prior to the Closing Date, and (iv) no stop order  suspending the
               effectiveness of the  Registration  Statement has been issued and
               no  proceedings  for that purpose have been  initiated or, to the
               knowledge of the Company, threatened by the Commission.

                    (6) On the Closing Date, the Underwriter shall have received
               from Arthur  Andersen  LLP a letter dated the Closing Date to the
               effect that: (A) they are  independent  public  accountants  with
               respect to the Company within the meaning of the 1933 Act and the
               rules and  regulations  under the 1933 Act; (B) in their opinion,
               the  financial  statements  and  schedules  audited  by them  and
               incorporated  by reference in the Final  Supplemented  Prospectus
               comply as to form in all material  respects  with the  applicable
               accounting  requirements of the 1933 Act and the 1934 Act and the
               rules and  regulations  under the 1933 Act and the 1934 Act;  (C)
               they  have  performed  certain  limited   procedures   through  a
               specified date not more than five business days prior to the date
               of such  letter,  namely  (i)  reading  the  minute  books of the
               Company; (ii) reading the unaudited financial statements, if any,
               of the Company incorporated in the Final Supplemented  Prospectus
               and agreeing the amounts  therein with the  Company's  accounting
               records;  (iii)  making  inquiries  of certain  officials  of the


                                       9



               Company who have  responsibility  for  financial  and  accounting
               matters regarding whether the unaudited financial statements,  if
               any, incorporated in the Final Supplemented Prospectus (a) are in
               conformity with generally accepted accounting  principles applied
               on a basis  substantially  consistent  with  that of the  audited
               financial  statements  incorporated  in  the  Final  Supplemented
               Prospectus  and (b)  comply as to form in all  material  respects
               with the applicable  accounting  requirements of the 1934 Act and
               the rules and  regulations  under the 1934 Act;  (iv) reading the
               unaudited amounts for Operating Revenues,  Income Before Interest
               Charges and Net Income After Dividends on Preferred Stock and the
               unaudited  Ratios of  Earnings to Fixed  Charges and  Earnings to
               Fixed Charges Plus Preferred  Dividend  Requirements  (Pre-Income
               Tax Basis),  which  amounts  shall  include  such amounts for the
               latest  calendar  quarter  subsequent  to  that  covered  by  the
               financial  statements  incorporated  by  reference  in the  Final
               Supplemented  Prospectus  for which such amounts are available at
               the time  this  agreement  becomes  effective;  (v)  reading  the
               unaudited financial  statements from which the amounts and ratios
               described in (iv) were  derived and agreeing the amounts  therein
               to the Company's  accounting  records;  (vi) making  inquiries of
               certain  officials  of the  Company who have  responsibility  for
               financial  and  accounting  matters  regarding  whether  (a)  the
               unaudited  amounts  and ratios  referred to in (iv) above and the
               unaudited  financial  statements  referred  to in (v)  above  are
               stated  on a  basis  substantially  consistent  with  that of the
               corresponding  audited amounts or ratios included or incorporated
               by reference in the Final Supplemented Prospectus and (b) as of a
               specified date not more than five business days prior to the date
               of  delivery  of such  letter,  there has been any  change in the
               capital stock or long-term debt of the Company or any decrease in
               net assets as compared with amounts  shown in the latest  audited
               balance sheet incorporated in the Prospectus, except in each case
               for  changes  or  decreases  which  (I)  the  Final  Supplemented
               Prospectus  discloses  have  occurred  or  may  occur,  (II)  are
               occasioned by the declaration of dividends,  (III) are occasioned
               by  draw-downs  under  existing   pollution   control   financing
               arrangements,  (IV) are  occasioned by  draw-downs  and regularly
               scheduled  payments of  capitalized  lease  obligations,  (V) are
               occasioned  by the  purchase or  redemption  of bonds or stock to
               satisfy  mandatory  or optional  redemption  provisions  relating
               thereto, or (VI) are disclosed in such letter;  (vii) reading the
               unaudited amounts for Operating Revenues,  Income Before Interest
               Charges and Net Income After Dividends on Preferred Stock and the
               unaudited  Ratios of  Earnings to Fixed  Charges and  Earnings to
               Fixed Charges Plus Preferred  Dividend  Requirements  (Pre-Income
               Tax Basis) for the latest  calendar  quarter  subsequent to those
               set forth in (iv) above, which if available shall be set forth in
               such letter;  (viii) reading the unaudited  financial  statements
               from which the amounts and ratios  described  in (vii) above were
               derived and which will be  attached  to such letter and  agreeing
               the amounts therein to the Company's accounting records; and (ix)
               making  inquiries  of certain  officials  of the Company who have
               responsibility  for financial and  accounting  matters  regarding
               whether the  unaudited  amounts  and ratios  referred to in (vii)
               above  and the  unaudited  financial  statements  referred  to in
               (viii) above are stated on a basis substantially  consistent with
               that of the  corresponding  audited amounts or ratios included or


                                       10



               incorporated by reference in the Final Supplemented Prospectus;
               and (D) reporting their findings as a result of performing  the
               limited procedures set forth in (C) above. It is understood that
               the foregoing  procedures do not constitute an audit performed in
               accordance with generally  accepted  auditing standards and they
               would not necessarily reveal matters of significance with respect
               to the comments made in such letter, and accordingly that Arthur
               Andersen LLP make no  representations as to the sufficiency of
               such procedures for the Underwriter's purposes.

                    (7) On the Closing Date, counsel for the Underwriter  shall
               have been  furnished  with such  documents and opinions as it may
               reasonably  require  for the  purpose of enabling it to pass upon
               the issuance and sale of the Senior Notes as herein  contemplated
               and related proceedings,  or in order to evidence the accuracy of
               any of the  representations or warranties,  or the fulfillment of
               any of the  conditions,  herein  contained;  and all  proceedings
               taken by the Company in connection  with the issuance and sale of
               the Senior Notes as herein  contemplated shall be satisfactory in
               form and substance to the Underwriter  and Dewey  Ballantine LLP,
               counsel for the Underwriter.

                    (8) That no amendment or supplement  to the  Registration
               Statement or the Final Supplemented  Prospectus filed subsequent
               to the date of this Agreement (including any filing made by the
               Company pursuant to Section 13 or 14 of the 1934 Act) shall be
               unsatisfactory in form to Dewey Ballantine LLP or shall contain
               information (other than with respect  to  an  amendment  or
               supplement relating solely to the activity of the  Underwriter)
               which,  in the reasonable judgment  of the  Underwriter,  shall
               materially impair the marketability of the Senior Notes.

                    (9) The Company shall have performed its obligations  when
               and as provided under this Agreement.

                  If any condition specified in this Section shall not have been
fulfilled when and as required to be fulfilled, this Agreement may be terminated
by the  Underwriter  by notice to the  Company at any time prior to the  Closing
Date, and such termination  shall be without liability of any party to any other
party except as provided in Sections 4, 7 and 9(b) hereof.

                 SECTION 6. CONDITIONS OF THE OBLIGATIONS OF THE COMPANY.

                  The  obligations  of  the  Company  shall  be  subject  to the
conditions  set forth in the first sentence of Section 5(a) and in Section 5(b).
In case such  conditions  shall not have been  fulfilled,  this Agreement may be
terminated by the Company by mailing or delivering written notice thereof to the
Underwriter. Any such termination shall be without liability of any party to any
other party except as otherwise provided in Sections 4, 7 and 9(b) hereof.

                                       11


                 SECTION 7. INDEMNIFICATION.


                (a) The Company agrees to indemnify  and hold  harmless the
Underwriter and each person, if any, who controls the Underwriter
within the meaning of Section 15 of the 1933 Act or Section 20(a)
of the 1934 Act, against any and all losses,  claims,  damages or
liabilities,  joint or several,  to which they or any of them may
become subject under the 1933 Act, 1934 Act or otherwise,  and to
reimburse the Underwriter and such controlling person or persons,
if any,  for any  legal or  other  expenses  incurred  by them in
connection  with  defending any actions,  insofar as such losses,
claims, damages, liabilities or actions arise out of or are based
upon any  untrue  statement  or  alleged  untrue  statement  of a
material  fact  contained  in  any  Preliminary  Prospectus,  the
Registration Statement,  the Prospectus or the Final Supplemented
Prospectus  or, if the Company shall  furnish to the  Underwriter
any  amendments  or any  supplements  thereto,  or shall make any
filings  pursuant  to  Section 13 or 14 of the 1934 Act which are
incorporated therein by reference, in any Preliminary Prospectus,
the   Registration   Statement,   the  Prospectus  or  the  Final
Supplemented  Prospectus as so amended or supplemented,  or arise
out of or are based  upon any  omission  or alleged  omission  to
state therein a material  fact  required to be stated  therein or
necessary to make the statements  therein not misleading,  except
insofar as such losses, claims,  damages,  liabilities or actions
arise  out of or are  based  upon any such  untrue  statement  or
alleged  untrue  statement or omission or alleged  omission which
was made in such Registration Statement,  Preliminary Prospectus,
Prospectus or the Final Supplemented  Prospectus in reliance upon
and in conformity  with  information  furnished in writing to the
Company by the  Underwriter  for use therein and except that this
indemnity  with  respect  to  the  Preliminary  Prospectus,   the
Prospectus or the Final Supplemented  Prospectus,  if the Company
shall have furnished any amendment or supplement  thereto,  shall
not inure to the  benefit  of the  Underwriter  (or of any person
controlling the  Underwriter)  on account of any losses,  claims,
damages,  liabilities  or  actions  arising  from the sale of the
Senior  Notes  to  any  person  if  a  copy  of  the  Preliminary
Prospectus,  the Prospectus or the Final Supplemented  Prospectus
(exclusive  of  documents   incorporated   therein  by  reference
pursuant to Item 12 of Form S-3), as the same may then be amended
or  supplemented,  shall  not  have  been  sent or given by or on
behalf of the  Underwriter  to such  person  with or prior to the
written   confirmation  of  the  sale  involved  and  the  untrue
statement  or alleged  untrue  statement  or  omission or alleged
omission  was  corrected  in  the  Preliminary  Prospectus,   the
Prospectus or the Final  Supplemented  Prospectus as supplemented
or  amended  at the time of such  confirmation.  The  Underwriter
agrees,  within ten days after the receipt by it of notice of the
commencement  of any action in respect of which  indemnity may be
sought by it, or by any person  controlling  it, from the Company
on  account  of its  agreement  contained  in this  Section 7, to
notify the Company in writing of the commencement thereof but the
omission of the  Underwriter so to notify the Company of any such
action shall not release the Company from any liability  which it
may  have  to  the  Underwriter  or to  such  controlling  person
otherwise than on account of the indemnity agreement contained in
this Section 7. In case any such action shall be brought  against
the  Underwriter or any such person  controlling  the Underwriter
and the Underwriter  shall notify the Company of the commencement
thereof as above  provided,  the  Company  shall be  entitled  to
participate in (and, to the extent that it shall wish,  including
the selection of counsel,  to direct) the defense thereof, at its
own  expense.  In case the Company  elects to direct such defense


                                       12



and select such counsel,  the  Underwriter or controlling  person
shall have the right to employ its own counsel,  but, in any such
case,  the  fees and  expenses  of such  counsel  shall be at the
expense of the Underwriter or such controlling  person unless the
employment of such counsel has been  authorized in writing by the
Company in connection with defending such action. No indemnifying
party  shall,  without  the  written  consent of the  indemnified
party,  effect the settlement or compromise of, or consent to the
entry of any judgment  with respect to, any pending or threatened
action or claim in respect of which indemnification may be sought
hereunder  (whether or not the indemnified  party is an actual or
potential party to such action or claim) unless such  settlement,
compromise or judgment (i) includes an  unconditional  release of
the  indemnified  party from all  liability  arising  out of such
action or claim and (ii) does not include any statement as to, or
an admission of, fault, culpability or a failure to act, by or on
behalf  of  any   indemnified   party.  In  no  event  shall  any
indemnifying  party  have  any  liability  or  responsibility  in
respect of the  settlement  or  compromise  of, or consent to the
entry of any judgment  with respect to, any pending or threatened
action or claim effected without its prior written consent.

                    (b) The Underwriter agrees to indemnify and hold harmless
the Company, its directors and such of its officers who have signed the
Registration Statement and each person,  if any, who controls the Company
within the meaning of Section 15 of the 1933 Act or Section  20(a) of the 1934
Act to the same extent and upon the same terms as the indemnity agreement of
the Company set forth in Section 7(a) hereof,  but only with respect to alleged
untrue statements or omissions made in the Registration Statement, the
Preliminary Prospectus,  the Prospectus or the Final Supplemented Prospectus,
or such documents as amended or supplemented, in reliance upon and in conformity
with information furnished in writing to the Company by the Underwriter for use
therein.

                     SECTION 8. REPRESENTATIONS, WARRANTIES AND AGREEMENTS TO
SURVIVE DELIVERY.

                  All  representations,  warranties and agreements  contained in
this  Agreement,  or  contained  in  certificates  of  officers  of the  Company
submitted pursuant hereto,  shall remain operative and in full force and effect,
regardless  of any  investigation  made by or on  behalf of the  Underwriter  or
controlling  person,  or by,  or on  behalf of the  Company  and  shall  survive
delivery of the Senior Notes to the Underwriter.

                     SECTION 9.  TERMINATION OF AGREEMENT.

                    (a) The Underwriter may terminate this Agreement,  by notice
to the Company,  at any time at or prior to the Closing  Date if (i) trading in
securities on the New York Stock Exchange shall have been generally suspended,
(ii) minimum or maximum ranges for prices shall have been generally established
on the New York Stock Exchange by the Commission or by the New York Stock
Exchange,  (iii) a general banking moratorium  shall have been declared by
federal or New York State authorities,  or (iv) there shall have occurred any
outbreak or escalation of major hostilities in which the United States is
involved, any declaration of war by the United States Congress or any other
substantial national or international calamity or emergency affecting

                                       13



the United States,  in any such case provided for in clauses (i) through (iv)
with the result that, in the reasonable judgement of the Underwriter,  the
market ability of the Senior Notes shall have been materially impaired.

                     (b) If this Agreement shall be terminated by the
Underwriter pursuant to subsection (a) above or because of any failure or
refusal on the part of the Company to comply with the terms or to fulfill any
of the conditions of this Agreement, or if for any reason the Company shall be
unable to perform its obligations under this Agreement, then in any such case,
the Company will reimburse the Underwriter for the reasonable fees and
disbursements of Dewey Ballantine LLP and for the out of pocket expenses (in an
amount not exceeding $10,000) reasonably incurred by the Underwriter in making
preparations for the purchase,  sale and delivery of the Senior Notes and, upon
such reimbursement, the Company shall be absolved from any further liability
hereunder,  except as provided in Sections 4 and 7.

                     SECTION 10.  NOTICES. All notices and other communications
hereunder  shall be in writing and shall be deemed to have been duly
given if mailed or  transmitted  by any standard form of telecommunication.
Notices to the  Underwriter shall be directed to Salomon Smith Barney Inc.,
390 Greenwich Street,  New York, New York 10013,  Attention: Howard Hiller;
notices to the Company shall be delivered to 2992 West Beach, Gulfport,
Mississippi,  Attention:  Corporate Secretary, with a copy to Southern Company
Services, Inc., 270 Peachtree Street, N.W., Atlanta, Georgia 30303, Attention:
Jeffrey A. Spencer.

                     SECTION 11. PARTIES. This Agreement shall inure to the
benefit of and be binding upon the Underwriter,  the Company and their
respective successors.  Nothing expressed or mentioned in this Agreement is
intended or shall be construed to give any person, firm or corporation, other
than the Underwriter and the Company and their respective successors and the
controlling persons and officers and directors referred to in Section 7 and
their heirs and legal representatives, any legal or equitable right, remedy or
claim under or in respect of this Agreement or any provision herein contained.
This Agreement and all conditions and provisions hereof are intended to be for
the sole and exclusive benefit of the Underwriter and the Company and their
respective successors, and said controlling persons and officers and directors
and their heirs and legal representatives, and for the benefit of no other
person, firm or corporation. No purchaser of Senior Notes from the Underwriter
shall be deemed to be a successor by reason merely of such purchase.

                    SECTION 12. GOVERNING LAW AND TIME. This Agreement shall be
governed  by and construed in accordance with the laws of the State of  New
York applicable to agreements made and to be performed in said State.  Except
as otherwise set forth herein, specified times of day refer to New York City
time.

     SECTION 13. COUNTERPARTS.  This Agreement may be executed by any one or
more of the parties hereto in any number of counterparts,  each of which shall
be deemed to be an original, but all such respective counterparts shall together
constitute one and the same instrument.


                                       14



                  If the foregoing is in accordance with your understanding of
our  agreement,  please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, will become a binding
agreement between the Underwriter and the Company in accordance with its terms.

                                                     Very truly yours,

                            MISSISSIPPI POWER COMPANY

                            By:  ______________________________
                            Title: _____________________________


CONFIRMED AND ACCEPTED,
as of the date first above written

SALOMON SMITH BARNEY INC.


By:___________________________
Title: _________________________



                                                Schedule II-A

                    [Letterhead of Eaton and Cottrell, P.A.]

                                                        ___________ __, 2000

Salomon Smith Barney Inc.
390 Greenwich Street
New York, New York 10013


                            MISSISSIPPI POWER COMPANY

                       Series C Floating Rate Senior Notes

                               due March __, 2002

Ladies and Gentlemen:

                  We have acted as general counsel to Mississippi  Power Company
(the  "Company")  in  connection  with (i) the  Company's  issuance  of  $______
aggregate  principal amount of its Series C Floating Rate Senior Notes due March
__, 2002 (the "Notes")  pursuant to a Senior Note  Indenture  dated as of May 1,
1998,  by and between the Company and Bankers  Trust  Company,  as trustee  (the
"Trustee"),  as  supplemented  by the Third  Supplemental  Indenture dated as of
__________ __, 2000  (collectively,  the "Indenture");  and (ii) the purchase by
you of the Notes pursuant to the terms of an Underwriting  Agreement dated March
__,  2000,  among the Company  and you (the  "Underwriter")  (the  "Underwriting
Agreement").  Pursuant to a Calculation  Agent Agreement,  dated as of March __,
2000 (the "Calculation Agent Agreement"),  between the Company and Bankers Trust
Company, as calculation agent thereunder (the "Calculation  Agent"), the Company
has engaged the Calculation  Agent to perform  certain  services with respect to
the floating  interest rate on the Senior Notes. This opinion is being delivered
to you pursuant to Section 5(c)(1) thereof.

                  All capitalized  terms not otherwise defined herein shall have
the meanings set forth in the Underwriting Agreement.

                  In rendering the opinions  expressed  below,  we have examined
the  registration  statement  on Form  S-3  (Nos.  333-45069,  333-45069-01  and
333-45069-02) pertaining to the Notes (the "Registration Statement") filed under
the  Securities Act of 1933, as amended (the "Act"),  and the  prospectus  dated
________,   2000  as  supplemented  by  a  final  prospectus   supplement  dated
__________,  2000 (the "Final Supplemented Prospectus"),  which pursuant to Form
S-3  incorporates by reference the Annual Report on Form 10-K of the Company for
the fiscal year ended  __________________,  ___ (the "Form 10-K"), the Quarterly
Reports on Form 10-Q of the Company for the quarters ended  ____________ and the
Current  Reports on Form 8-K of the Company dated  __________ (the "Exchange Act
Documents"), each as filed under the Securities Exchange Act of 1934, as amended
(the "Exchange Act").




                  In addition,  we have examined,  and have relied as to matters
of fact upon, the documents  delivered to you at the closing  (except the Notes,
of which we have  examined a specimen),  and we have made such other and further
investigations  as we deemed  necessary to express the opinions  hereinafter set
forth.

                  The  Indenture,   the  Calculation  Agent  Agreement  and  the
Underwriting Agreement are herein referred to as the "Agreements".

                  We have also  examined the opinion of Troutman  Sanders LLP to
you of even date with respect to matters relating to the Securities Act of 1933,
as amended; the Securities Exchange Act of 1934, as amended; the Trust Indenture
Act of 1939, as amended,  and to the  applicable  rules and  regulations  of the
Commission  under said Acts and in expressing the opinions  stated herein,  with
respect to such matters, we are relying on such opinion.

                  Based upon the  foregoing,  and subject to the  qualifications
and limitations  stated herein, we are of the opinion,  relying as to matters of
New York law upon the  opinion  dated the date  hereof  rendered to you by Dewey
Ballantine LLP, that:

         1. The Company has been duly  organized and is validly  existing and in
good standing as a corporation  under the laws of the State of  Mississippi,  is
duly qualified to carry on its business as a foreign  corporation under the laws
of the State of Alabama,  and has due corporate authority to carry on the public
utility  business in which it is engaged  and to own and operate the  properties
used by it in such business and to enter into and perform its obligations  under
the Agreements and the Notes.

         2. The  execution,  delivery  and  performance  by the  Company  of the
Underwriting  Agreement  have been duly  authorized by all  necessary  corporate
action,  and the Underwriting  Agreement has been duly executed and delivered by
the Company.

         3. All orders,  consents,  or other  authorizations or approvals of the
Commission  legally  required  for the  issuance and sale of the Notes have been
obtained; such orders are sufficient for the issuance and the sale of the Notes;
the issuance and the sale of the Notes conform in all material respects with the
terms of such orders;  and no other  order,  consent or other  authorization  or
approval of any  Mississippi or United States  governmental  body (other than in
connection or in compliance  with the provisions of the securities or "blue sky"
laws of any jurisdiction, as to which we express no opinion) is legally required
for the  issuance  and sale of the  Notes in  accordance  with the  terms of the
Underwriting Agreement.

         4. Each of the  Calculation  Agent Agreement and the Indenture has been
duly  authorized,  executed and  delivered by the Company and,  assuming the due
authorization,  execution and delivery thereof by the Calculation  Agent and the
Trustee, respectively, constitutes a valid and legally binding instrument of the
Company,  enforceable against the Company in accordance with its terms,  subject
to the  qualifications  that the  enforceability  of the  Company's  obligations
thereunder may be limited by bankruptcy, insolvency, reorganization,  moratorium
and other similar laws relating to or affecting  creditors' rights generally and
by general  principles of equity  (regardless of whether such  enforceability is
considered in a proceeding in equity or at law);  and the Indenture  conforms as
to legal  matters in all  material  respects to the  description  thereof in the
Final Supplemented Prospectus.


                                      2


         5. The Notes have been duly authorized and executed by the Company and,
when  authenticated  by the Trustee in the manner  provided in the Indenture and
delivered  to and  paid  for by the  Underwriter  pursuant  to the  Underwriting
Agreement,  will  constitute  valid  and  binding  obligations  of the  Company,
enforceable  against the Company in accordance with their terms,  subject to the
qualifications  that the  enforceability of the Company's  obligations under the
Notes may be limited by bankruptcy, insolvency,  reorganization,  moratorium and
other similar laws relating to or affecting  creditors'  rights generally and by
general  principles of equity;  and the Notes conform as to legal matters in all
material  respects  to  the  description   thereof  in  the  Final  Supplemented
Prospectus.

         6.       The Indenture has been duly qualified under the Trust
Indenture Act of 1939, as amended.

                  We have not independently verified the accuracy,  completeness
or fairness of the statements  made or included in the  Registration  Statement,
the Final  Supplemented  Prospectus  or the Exchange Act  Documents  and take no
responsibility  therefor,  except as and to the extent set forth in paragraphs 4
and 5 above and in the Final  Supplemented  Prospectus  in the second  paragraph
under the caption "Experts".  In the course of the preparation by the Company of
the Registration  Statement,  the Final Supplemented Prospectus and the Exchange
Act  Documents,  we  participated  in  conferences  with  certain  officers  and
employees  of  the  Company,  with  other  counsel  for  the  Company  and  with
representatives  of Arthur  Andersen  LLP.  Based  upon our  examination  of the
Registration  Statement,  the Final Supplemented Prospectus and the Exchange Act
Documents,  our  investigations  made in connection  with the preparation of the
Registration  Statement,  the Final Supplemented Prospectus and the Exchange Act
Documents and our participation in the conferences referred to above, (i) we are
of the opinion that the  Registration  Statement,  as of its effective date, and
the Final Supplemented Prospectus, as of __________,  complied as to form in all
material  respects with the requirements of the Act and the applicable rules and
regulations of the Commission thereunder and that the Exchange Act Documents, as
of their respective dates of filing with the Commission,  complied as to form in
all material respects with the relevant requirements of the Exchange Act and the
applicable  rules and regulations of the Commission  thereunder,  except that in
each  case we  express  no  opinion  as to the  financial  statements  or  other
financial or  statistical  data  contained or  incorporated  by reference in the
Registration  Statement,  the Final Supplemented  Prospectus or the Exchange Act
Documents,  and (ii)  nothing  came to our  attention  which  gives us reason to
believe that the  Registration  Statement,  as of the date of filing of the Form
10-K  (including  the Exchange Act  Documents on file with the  Commission as of
such date),  contained  any untrue  statement  of a material  fact or omitted to
state any material fact  required to be stated  therein or necessary in order to
make the  statements  therein  not  misleading,  or that the Final  Supplemented
Prospectus  (including the Exchange Act Documents) contains any untrue statement

                                       3



therein of a material fact or omits to state a material fact  necessary in order
to make the statements  therein,  in the light of the circumstances  under which
they were made, not  misleading,  except that in each case we express no opinion
or belief  with  respect  to the  financial  statements  or other  financial  or
statistical  data  contained or  incorporated  by reference in the  Registration
Statement,  the Final Supplemented  Prospectus or the Exchange Act Documents and
with respect to information set forth in the Final Supplemented Prospectus under
the caption "Description of the Series C Senior Notes - Book-Entry Only Issuance
- - The Depository Trust Company".

                  We are members of the State Bar of  Mississippi  and we do not
express any opinion  herein  concerning any law other than the law of such State
and the  federal law of the United  States and, to the extent set forth  herein,
the laws of the States of Alabama and New York.

                  This  opinion  is  rendered  to you  in  connection  with  the
above-described transaction.  This opinion may not be relied upon by you for any
other  purpose,  or relied upon by or furnished to any other person  without our
prior written consent, except that Troutman Sanders LLP and Dewey Ballantine LLP
may rely on this opinion in giving their opinions  pursuant to the  Underwriting
Agreement  insofar as such opinion relates to matters of Mississippi and Alabama
law.

                                                     Yours very truly,

                                                     EATON AND COTTRELL, P.A.




                                       4

                                                             Schedule II-B

                                         [Letterhead of TROUTMAN SANDERS LLP]
                                                   __________ __, 2000



Salomon Smith Barney Inc.
390 Greenwich Street
New York, New York 10013


                            MISSISSIPPI POWER COMPANY
                       Series C Floating Rate Senior Notes
                               due March __, 2002

Ladies and Gentlemen:

                  We have acted as counsel to  Mississippi Power Company  (the
"Company")  in  connection with  (i) the Company's issuance of  $__________
aggregate  principal amount of its Series C Floating Rate Senior Notes due March
__, 2002 (the "Notes") pursuant to a Senior Note  Indenture dated as of May 1,
1998,  by and between the Company and Bankers Trust Company,  as trustee  (the
"Trustee"),  as  supplemented by the Third  Supplemental Indenture dated as of
__________ __, 2000  (collectively,  the "Indenture");  and (ii) the purchase by
you (the  "Underwriter")  of the Notes pursuant to the terms of an Underwriting
Agreement  dated March __,  2000, among the Company and you (the "Underwriting
Agreement").  Pursuant to a Calculation Agent Agreement, dated as of March __,
2000 (the "Calculation Agent Agreement"),  between the Company and Bankers Trust
Company, as calculation agent thereunder (the "Calculation  Agent"), the Company
has engaged the Calculation Agent to perform certain services with respect to
the floating  interest rate on the Notes. This opinion is being delivered to you
pursuant to Section 5(c)(2) thereof.

                  All capitalized  terms not otherwise defined herein shall have
the meanings set forth in the Underwriting Agreement.

                  In rendering the opinions expressed  below,  we have examined
the  registration  statement  on Form  S-3  (Nos. 333-45069,  333-45069-01  and
333-45069-02) pertaining to the Notes (the "Registration Statement") filed under
the  Securities Act of 1933, as amended (the "Act"), and the prospectus  dated
___________,  2000  as  supplemented  by a  final  prospectus supplement  dated
__________,  2000 (the "Final Supplemented Prospectus"),  which pursuant to Form
S-3  incorporates by reference the Annual Report on Form 10-K of the Company for
the  fiscal  year ended  _____________,  ___ (the "Form  10-K"),  the  Quarterly
Reports on Form 10-Q of the Company for the quarters ended  ____________ and the
Current  Reports on Form 8-K of the Company dated  _________  (the "Exchange Act
Documents"), each as filed under the Securities Exchange Act of 1934, as amended
(the "Exchange Act").




                  In addition,  we have examined,  and have relied as to matters
of  fact  upon,  the  documents  delivered  to you at the  closing  (except  the
certificates  representing the Notes, of which we have examined a specimen), and
we have made such other and further  investigations  as we deemed  necessary  to
express the opinions hereinafter set forth. In such examination, we have assumed
the genuineness of all signatures,  the legal capacity of natural  persons,  the
authenticity  of all documents  submitted to us as originals,  the conformity to
original documents of all documents  submitted to us as certified or photostatic
copies, and the authenticity of the originals of such latter documents.

                  The  Indenture,   the  Calculation  Agent  Agreement  and  the
Underwriting Agreement are herein referred to collectively as the "Agreements".

                  Based upon the  foregoing,  and subject to the  qualifications
and limitations  stated herein, we are of the opinion,  relying as to matters of
Mississippi  and Alabama law upon the opinion dated the date hereof  rendered to
you by Eaton and  Cottrell,  P.A. and relying as to matters of New York law upon
the opinion dated the date hereof rendered to you by Dewey Ballantine LLP, that:

         1. The Company has been duly  incorporated and is validly existing as a
corporation in good standing under the laws of the State of Mississippi, is duly
qualified  to carry on its business as a foreign  corporation  under the laws of
the State of Alabama,  and has due  corporate  authority  to carry on the public
utility business in which it is engaged,  to own and operate the properties used
by it in such business and to enter into and perform its  obligations  under the
Agreements and the Notes.

         2. The  execution,  delivery  and  performance  by the  Company  of the
Underwriting  Agreement  have been duly  authorized by all  necessary  corporate
action,  and the Underwriting  Agreement has been duly executed and delivered by
the Company.

         3. All orders,  consents or other  authorizations  or  approvals of the
Commission  legally  required  for the  issuance and sale of the Notes have been
obtained; such orders are sufficient for the issuance and sale of the Notes; the
issuance and sale of the Notes  conform in all material  respects with the terms
of such orders; and no other order,  consent or other  authorization or approval
of any Mississippi or United States  governmental body (other than in connection
or in compliance with the provisions of the securities or "blue sky" laws of any
jurisdiction,  as to which we express no  opinion) is legally  required  for the
issuance and sale of the Notes in accordance with the terms of the  Underwriting
Agreement.

         4. Each of the  Calculation  Agent Agreement and the Indenture has been
duly  authorized,  executed and  delivered by the Company and,  assuming the due
authorization,  execution and delivery thereof by the Calculation  Agent and the
Trustee, respectively, constitutes a valid and legally binding instrument of the
Company,  enforceable against the Company in accordance with its terms,  subject
to the qualifications that the enforceability of the Company's obligations under
the  Indenture  may  be  limited  by  bankruptcy,  insolvency,   reorganization,
moratorium  and other  similar laws relating to or affecting  creditors'  rights

                                       2


generally  and by general  principles  of equity  (regardless  of  whether  such
enforceability  is  considered  in a  proceeding  in equity or at law);  and the
Indenture  conforms  as to  legal  matters  in  all  material  respects  to  the
description thereof in the Final Supplemented Prospectus.

         5. The Notes have been duly authorized and executed by the Company and,
when  authenticated  by the Trustee in the manner  provided in the Indenture and
delivered  to and  paid  for by the  Underwriter  pursuant  to the  Underwriting
Agreement,  will  constitute  valid  and  binding  obligations  of the  Company,
enforceable  against the Company in accordance with their terms,  subject to the
qualifications  that the  enforceability of the Company's  obligations under the
Notes may be limited by bankruptcy, insolvency,  reorganization,  moratorium and
other similar laws relating to or affecting  creditors'  rights generally and by
general  principles  of equity  (regardless  of whether such  enforceability  is
considered  in a proceeding  in equity or at law);  and the Notes  conform as to
legal matters in all material  respects to the description  thereof in the Final
Supplemented Prospectus.

         6.       The Indenture has been duly qualified under the Trust
Indenture Act of 1939, as amended.

                  We have not independently verified the accuracy,  completeness
or fairness of the statements  made or included in the  Registration  Statement,
the Final  Supplemented  Prospectus  or the Exchange Act  Documents  and take no
responsibility  therefor,  except as and to the extent set forth in paragraphs 4
and 5 above. In the course of the preparation by the Company of the Registration
Statement,  the Final Supplemented Prospectus and the Exchange Act Documents, we
participated in conferences  with certain officers and employees of the Company,
with other counsel for the Company,  with representatives of Arthur Andersen LLP
and with your counsel. Based upon our examination of the Registration Statement,
the  Final  Supplemented   Prospectus  and  the  Exchange  Act  Documents,   our
investigations  made in  connection  with the  preparation  of the  Registration
Statement,  the Final Supplemented Prospectus and the Exchange Act Documents and
our  participation  in the  conferences  referred  to  above,  (i) we are of the
opinion that the Registration Statement, as of its effective date, and the Final
Supplemented  Prospectus,  as of  _______________,  complied  as to  form in all
material  respects with the requirements of the Act and the applicable rules and
regulations of the Commission thereunder and that the Exchange Act Documents, as
of their respective dates of filing with the Commission,  complied as to form in
all material respects with the relevant requirements of the Exchange Act and the
applicable  rules and regulations of the Commission  thereunder,  except that in
each  case we  express  no  opinion  as to the  financial  statements  or  other
financial or  statistical  data  contained or  incorporated  by reference in the
Registration  Statement,  the Final Supplemented  Prospectus or the Exchange Act
Documents,  and (ii)  nothing  came to our  attention  which  gives us reason to
believe that the  Registration  Statement,  as of the date of filing of the Form
10-K  (including  the Exchange Act  Documents on file with the  Commission as of
such date),  contained  any untrue  statement  of a material  fact or omitted to
state any material fact  required to be stated  therein or necessary in order to
make the  statements  therein  not  misleading,  or that the Final  Supplemented
Prospectus  (including the Exchange Act Documents) contains any untrue statement
of a material fact or omits to state a material fact  necessary in order to make
the statements  therein, in the light of the circumstances under which they were
made, not  misleading,  except that in each case we express no opinion or belief


                                       3


with respect to the financial  statements or other financial or statistical data
contained or incorporated by reference in the Registration Statement,  the Final
Supplemented  Prospectus  or the  Exchange  Act  Documents  and with  respect to
information  set forth in the Final  Supplemented  Prospectus  under the caption
"Description  of the  Series C Senior  Notes -  Book-Entry  Only  Issuance - The
Depository Trust Company".

                  We are  members  of the  State  Bar of  Georgia  and we do not
express any opinion herein concerning any law other than the law of the State of
Georgia and the  federal  law of the United  States and, to the extent set forth
herein, the laws of the States of Alabama, Mississippi and New York.

                  This  opinion  is  rendered  to you  in  connection  with  the
above-described transaction.  This opinion may not be relied upon by you for any
other  purpose,  or relied upon by or furnished to any other person  without our
prior written  consent,  except that Eaton and  Cottrell,  P.A. may rely on this
opinion in giving its  opinion  pursuant  to  Section  5(c) of the  Underwriting
Agreement, insofar as such opinion relates to matters of federal securities law.

                                                     Yours very truly,

                                                     TROUTMAN SANDERS LLP

                                       4



                                                               Schedule III

                          [Letterhead of White & Case]

                                                      __________ __, 2000



Salomon Smith Barney Inc.
390 Greenwich Street
New York, New York 10013

Mississippi Power Company
2992 West Beach
Gulfport, Mississippi 39501

                            Mississippi Power Company
             Series C Floating Rate Senior Notes due March __, 2002

Ladies and Gentlemen:

                  We have acted as counsel to Bankers Trust Company (the "Bank")
in connection with (a) the Senior Note  Indenture,  dated as of May 1, 1998 (the
"Original Indenture"), between Mississippi Power Company (the "Company") and the
Bank,  as  Trustee,  and  (b)  the  Third  Supplemental  Indenture  dated  as of
___________   (together   with  the  Original   Indenture,   herein  called  the
"Indenture"),  between  the  Company  and  the  Bank,  as  Trustee  and  (c) the
Calculation Agent Agreement,  dated as of March __, 2000 (the "Calculation Agent
Agreement"), between the Company and the Bank, as Calculation Agent.

                  In that  connection,  we have  examined  originals,  or copies
certified  or  otherwise  identified  to our  satisfaction,  of such  documents,
records and other instruments as we have deemed necessary or appropriate for the
purpose  of  this  opinion,  including  copies  of  the  Indenture  and  certain
resolutions adopted by the Board of Directors of the Bank.

                  Based upon the foregoing, we are of the opinion that:

                    i) the  Bank has been duly incorporated and is  validly
existing as a banking corporation in good standing under the laws of the State
of New York;

                  ii) the Bank has the corporate trust power and authority to
execute, deliver and perform its duties under the Indenture and the Calculation
Agent Agreement,  has duly executed and delivered the Indenture and the
Calculation Agent Agreement, and, insofar as the laws governing the trust
powers of the Bank are concerned and assuming due authorization, execution and



delivery thereof by the Company, each of the Indenture and the Calculation Agent
Agreement constitutes a legal, valid and binding agreement of the Bank,
enforceable against the Bank in accordance with its terms subject to applicable
bankruptcy,  insolvency, fraudulent transfer, reorganization, moratorium or
other laws affecting creditors' rights generally from time to time in effect
and to general principles of equity (including, without limitation, concepts of
materiality, reasonableness, good faith and fair dealing), regardless of whether
considered in a proceeding in equity or at law;

                  iii) the execution, delivery and performance by the Bank of
the Indenture and the Calculation Agent Agreement does not conflict with or
constitute a breach of the charter or bylaws of the Bank; and

                  iv)  no approval, authorization or other action by, or filing
with, any governmental authority of the United States of America or the State of
New York having jurisdiction over the trust powers of the Bank is required in
connection with the execution and delivery by the Bank of the Indenture or the
Calculation Agent Agreement or the performance by the Bank of its duties
thereunder,  except such as have been obtained, taken or made.

                  We are admitted to practice only in the State of New York, and
we express no opinion as to matters  governed by any laws other than the laws of
the State of New York and the  Federal law of the United  States of America.  We
are furnishing this opinion to you solely for your benefit.  This opinion is not
to be relied upon by any other person or used,  circulated,  quoted or otherwise
referred to for any other purpose.

                                                     Very truly yours,

                                                     WHITE & CASE





                                                                Schedule IV

                                      [Letterhead of DEWEY BALLANTINE LLP]


                                                        __________ __, 2000


Salomon Smith Barney Inc.
390 Greenwich Street
New York, New York 10013


                            MISSISSIPPI POWER COMPANY
                     Series C Floating Rate Senior Notes
                               due March __, 2002


Ladies and Gentlemen:

                  We have represented you (the "Underwriter") in connection with
(i) the Company's issuance of $____________ of its Series C Floating Rate Senior
Notes (the "Notes") pursuant to a Senior Note Indenture dated as of May 1, 1998,
by  and  between  the  Company  and  Bankers  Trust  Company,  as  trustee  (the
"Trustee"),  as heretofore supplemented and as further supplemented by the Third
Supplemental  Indenture  dated as of  __________  __,  2000  (collectively,  the
"Indenture"); and (ii) the purchase by you of the Notes pursuant to the terms of
an  Underwriting  Agreement  dated  March __,  2000,  among the  Company and the
Underwriter  (the  "Underwriting  Agreement").  Pursuant to a Calculation  Agent
Agreement,  dated as of March __,  2000  (the  "Calculation  Agent  Agreement"),
between the Company and Bankers Trust Company,  as calculation  agent thereunder
(the  "Calculation  Agent"),  the Company has engaged the  Calculation  Agent to
perform  certain  services  with  respect to the floating  interest  rate on the
Notes.  This  opinion is being  delivered  to you  pursuant  to Section  5(c)(4)
thereof.

                  All capitalized  terms not otherwise defined herein shall have
the meanings set forth in the Underwriting Agreement.

                  In rendering the opinions  expressed  below,  we have examined
the  registration  statement  on Form  S-3  (Nos.  333-45069,  333-45069-01  and
333-45069-02)  pertaining  to the Notes (the  "Registration  Statement"),  filed
under the  Securities  Act of 1933, as amended (the "Act"),  and the  prospectus
dated ________,  2000, as supplemented by a final  prospectus  supplement  dated
_________,  which  pursuant to Form S-3  incorporates  by  reference  the Annual
Report on Form 10-K of the Company  for the fiscal year ended  ________________,
___ (the "Form 10-K"), the Quarterly Reports on Form 10-Q of the Company for the
quarters ended _________ the Current  Reports on Form 8-K of the Company,  dated
__________  (the "Exchange Act  Documents"),  each as filed under the Securities
Exchange Act of 1934, as amended (the "Exchange Act").




                  In addition,  we have examined,  and have relied as to matters
of fact upon, the documents  delivered to you at the closing  (except the Notes,
of which we have  examined a specimen),  and we have made such other and further
investigations  as we deemed  necessary to express the opinions  hereinafter set
forth. In such  examination,  we have assumed the genuineness of all signatures,
the legal  capacity  of  natural  persons,  the  authenticity  of all  documents
submitted  to us as  originals,  the  conformity  to original  documents  of all
documents   submitted  to  us  as  certified  or  photostatic  copies,  and  the
authenticity of the originals of such latter documents.

                  The  Indenture,   the  Calculation  Agent  Agreement  and  the
Underwriting Agreement are herein referred to as the "Agreements".

                  Based upon the  foregoing,  and subject to the  qualifications
and limitations  stated herein, we are of the opinion,  relying as aforesaid and
as to all matters  covered  hereby which are  governed by or dependent  upon the
laws of the States of  Mississippi  and  Alabama  upon the  opinion of Eaton and
Cottrell, P.A. dated the date hereof and addressed to you, that:

                  1. The  Company  has been  duly  incorporated  and is  validly
existing  as a  corporation  in good  standing  under  the laws of the  State of
Mississippi, is duly qualified to carry on its business as a foreign corporation
in the State of Alabama,  and has due corporate authority to carry on the public
utility  business in which it is engaged  and to own and operate the  properties
used by it in such business and to enter into and perform its obligations  under
the Agreements and the Notes.

                  2. The execution,  delivery and  performance by the Company of
the Underwriting  Agreement have been duly authorized by all necessary corporate
action,  and the Underwriting  Agreement has been duly executed and delivered by
the Company.

                  3. All orders,  consents, or other authorizations or approvals
of the Commission  legally  required for the issuance and sale of the Notes have
been  obtained;  such orders are  sufficient  for the  issuance  and sale of the
Notes; the issuance and sale of the Notes conform in all material  respects with
the terms of such orders; and no other order,  consent or other authorization or
approval of any  Mississippi or United States  governmental  body (other than in
connection or in compliance  with the provisions of the securities or "blue sky"
laws of any jurisdiction, as to which we express no opinion) is legally required
for the  issuance  and sale of the  Notes in  accordance  with the  terms of the
Underwriting Agreement.

                  4. Each of the Indenture and the Calculation Agent Agreement
has been duly  authorized,  executed and delivered by the Company and,  assuming
the due  authorization,  execution and delivery thereof by the Trustee and the
Calculation  Agent,  respectively,  constitutes a valid and legally binding
instrument of the Company, enforceable against the Company in accordance with

                                       2


its  terms,  subject to the qualifications that the enforceability of the
Company's  obligations under the Indenture and the Calculation Agent Agreement
may be limited by bankruptcy, insolvency,  reorganization,  moratorium and other
similar laws relating to or affecting creditors' rights generally and by general
principles of equity (regardless of whether such enforceability is considered in
a  proceeding in  equity or at law);  and the Indenture conforms as to legal
matters in all material  respects  to the description thereof in the Final
Supplemented Prospectus.

                  5. The Notes have been duly authorized and executed by the
Company and, when  authenticated by the Trustee in the manner provided in the
Indenture and delivered to and paid for by the Underwriter pursuant to the
Underwriting Agreement,  will constitute  valid and binding  obligations of the
Company enforceable against the Company in accordance with their terms,  subject
to the qualifications that the enforceability of the Company's obligations under
the Notes may be limited by bankruptcy, insolvency, reorganization,  moratorium
and other similar laws relating to or affecting creditors' rights generally and
by general principles of equity (regardless of whether such  enforceability is
considered in a proceeding in equity or at law);  and the Notes conform as to
legal matters in all material respects to the description thereof in the Final
Supplemented Prospectus.

                  6. The Indenture has been duly qualified under the Trust
Indenture Act of 1939, as amended.

                  We have not independently verified the accuracy,  completeness
or fairness of the statements  made or included in the  Registration  Statement,
the Final  Supplemented  Prospectus  or the Exchange Act  Documents  and take no
responsibility  therefor,  except as and to the extent set forth in paragraphs 4
and 5 above. In the course of the preparation by the Company of the Registration
Statement,  the Final Supplemented Prospectus and the Exchange Act Documents, we
participated in conferences  with certain officers and employees of the Company,
with  representatives  of Arthur  Andersen  LLP and with counsel to the Company.
Based upon our examination of the Registration Statement, the Final Supplemented
Prospectus and the Exchange Act Documents, our investigations made in connection
with the preparation of the  Registration  Statement and the Final  Supplemented
Prospectus and our  participation  in the conferences  referred to above, (i) we
are of the opinion that the  Registration  Statement,  as of its effective date,
and the Final Supplemented Prospectus, as of ___________, complied as to form in
all material  respects with the requirements of the Act and the applicable rules
and  regulations  of  the  Commission  thereunder  and  that  the  Exchange  Act
Documents, as of their respective dates of filing with the Commission,  complied
as to form in all  material  respects  with  the  relevant  requirements  of the
Exchange  Act  and  the  applicable  rules  and  regulations  of the  Commission
thereunder,  except that in each case we express no opinion as to the  financial
statements or other  financial or statistical  data contained or incorporated by
reference in the Registration  Statement,  the Final Supplemented  Prospectus or
the Exchange Act Documents,  and (ii) nothing came to our attention  which gives
us reason to believe that the Registration  Statement,  as of the date of filing
of the  Form  10-K  (including  the  Exchange  Act  Documents  on file  with the
Commission as of such date),  contained any untrue  statement of a material fact

                                       3



or omitted to state any material fact required to be stated therein or necessary
in  order to make the  statements  therein  not  misleading,  or that the  Final
Supplemented  Prospectus  (including  the Exchange Act  Documents)  contains any
untrue  statement of a material fact or omits to state a material fact necessary
in order to make the statements therein, in the light of the circumstances under
which they were made,  not  misleading,  except  that in each case we express no
opinion or belief with respect to the financial statements or other financial or
statistical  data  contained or  incorporated  by reference in the  Registration
Statement,  the Final Supplemented  Prospectus or the Exchange Act Documents and
with respect to information set forth in the Final Supplemented Prospectus under
the caption "Description of the Series C Senior Notes - Book-Entry Only Issuance
- - The Depository Trust Company".

                  We are  members  of the  State  Bar of New  York and we do not
express any opinion herein concerning any law other than the law of the State of
New York and the federal law of the United  States,  and to the extent set forth
herein, the law of the States of Mississippi and Alabama.

                  This opinion is rendered  solely to you in connection with the
above  matter.  This opinion may not be relied upon by you for any other purpose
or relied upon by or  furnished to any other  person  without our prior  written
consent except that Eaton and Cottrell,  P.A. and Troutman  Sanders LLP may rely
on  this  opinion  in  giving  their  opinions  pursuant  to  Section  5 of  the
Underwriting  Agreement,  insofar as such opinions relate to matters of New York
law,  and  Troutman  Sanders LLP may rely on this  opinion in giving its opinion
pursuant to Sections 102, 302 and 904 of the Indenture,  insofar as such opinion
relates to matters of New York law.

                                                     Very truly yours,


                                                     DEWEY BALLANTINE LLP


                                       4