Exhibit 4.2-B

                                                               Draft 1/25/97
                                                     re:  Capital Securities




                            MISSISSIPPI POWER COMPANY

                                       TO

                             BANKERS TRUST COMPANY,
                                    TRUSTEE.







                          FIRST SUPPLEMENTAL INDENTURE

                          DATED AS OF ________ __, 19__






                                   $---------


                    SERIES __ ____% JUNIOR SUBORDINATED NOTES

                               DUE _____ __, ____























                  
                               TABLE OF CONTENTS1


                                                                     PAGE



ARTICLE 1..............................................................1


SECTION 101. Establishment.............................................1


SECTION 102. Definitions...............................................2


SECTION 103. Payment of Principal and Interest.........................3


SECTION 104. Deferral of Interest Payments.............................5


SECTION 105. Denominations.............................................6


SECTION 106. Global Securities.........................................6


SECTION 107. Transfer..................................................7


SECTION 108. Redemption................................................7


ARTICLE 2..............................................................9


SECTION 201. Recitals by Company.......................................9


SECTION 202. Ratification and Incorporation of Original Indenture.....10


SECTION 203. Executed in Counterparts.................................10


SECTION 204. Listing of Notes.........................................10



    1This Table of Contents does not constitute part of the Indenture or have
any bearing upon the interpretation of any of its terms and provisions.






                  THIS FIRST SUPPLEMENTAL INDENTURE is made as of the ____ day
of ______, 19__, by and between MISSISSIPPI POWER COMPANY, a Mississippi
corporation, 2992 West Beach, Gulfport, Mississippi 39051 (the "Company"), and
BANKERS TRUST COMPANY, a New York banking corporation, Four Albany Street, New
York, New York 10006 (the "Trustee").

                              W I T N E S S E T H:

                  WHEREAS, the Company has heretofore entered into a
Subordinated Note Indenture, dated as of _______ __, 19__ (the "Original
Indenture") with Bankers Trust Company;

                  WHEREAS, the Original Indenture is incorporated herein by this
reference and the Original Indenture, as supplemented by this First Supplemental
Indenture, is herein called the "Indenture";

                  WHEREAS, under the Original Indenture, a new series of Junior
Subordinated Notes may at any time be established by the Board of Directors of
the Company in accordance with the provisions of the Original Indenture and the
terms of such series may be described by a supplemental indenture executed by
the Company and the Trustee;

     WHEREAS, the Company proposes to create under the Indenture a new series of
Junior Subordinated Notes;

                  WHEREAS, additional Junior Subordinated Notes of other series
hereafter established, except as may be limited in the Original Indenture as at
the time supplemented and modified, may be issued from time to time pursuant to
the Indenture as at the time supplemented and modified; and

                  WHEREAS, all conditions necessary to authorize the execution,
delivery and recording of this First Supplemental Indenture and to make it a
valid and binding obligation of the Company have been done or performed.

                  NOW, THEREFORE, in consideration of the agreements and
obligations set forth herein and for other good and valuable consideration, the
sufficiency of which is hereby acknowledged, the parties hereto hereby agree as
follows:

                                    ARTICLE 1

                       Series A Junior Subordinated Notes

     SECTION 101.  Establishment.  There is hereby  established  a new series of
Junior Subordinated Notes to be issued under the Indenture,  to be designated as
the Company's Series __ ____% Junior  Subordinated  Notes due ____ __, ____ (the
"Series __ Notes").

         There are to be authenticated and delivered $___________ principal
amount of Series __ Notes, and no further Series __ Notes shall be authenticated
and delivered except as provided by Sections 203, 303, 304, 907 or 1107 of the
Original Indenture. The Series __ Notes shall be issued in definitive fully
registered form.

         The Series __ Notes shall be in substantially the form set out in
Exhibit A hereto. The entire principal amount of the Series __ Notes shall
initially be evidenced by one certificate issued to the Property Trustee of
Mississippi Power Capital Trust ___.

         The form of the Trustee's Certificate of Authentication for the Series
__ Notes shall be in substantially the form set forth in Exhibit B hereto.

         Each Series ___ Note shall be dated the date of authentication thereof
and shall bear interest from the date of original issuance thereof or from the
most recent Interest Payment Date to which interest has been paid or duly
provided for.

     SECTION 102.  Definitions.  The following  defined terms used herein shall,
unless the  context  otherwise  requires,  have the  meanings  specified  below.
Capitalized  terms used herein for which no definition is provided  herein shall
have the meanings set forth in the Original Indenture.

         "Deferred Interest" means each installment of interest not paid during
any Extension Period, and interest thereon. Deferred installments of interest
shall bear interest at the rate of _____% per annum from the applicable Interest
Payment Date to the date of payment, compounded semi-annually.

         "Extension Period" means any period during which the Company has
elected to defer payments of interest, which deferral may be for a period of up
to ten (10) consecutive semi-annual periods.

     "Interest Payment Dates" means  __________________ __, and _______________.

         "Investment Company Act Event" means that the Company shall have
received an Opinion of Counsel to the effect that, as a result of the occurrence
of a change in law or regulation or a written change in interpretation or
application of law or regulation by any legislative body, court, governmental
agency or regulatory authority, there is more than an insubstantial risk that
the Securities Trust is or will be considered an "investment company" that is
required to be registered under the Investment Company Act of 1940, as amended,
which change becomes effective on or after the Original Issue Date.

         "Original Issue Date" means __________ __, 19__.


         "Regular Record Date" means, with respect to each Interest Payment
Date, the close of business on the 15th calendar day preceding such Interest
Payment Date.

         "Securities Trust" means Mississippi Power Capital Trust ___, a
statutory business trust formed by the Company under Delaware law to issue Trust
Securities, the proceeds of which will be used to purchase Series __ Notes.

         "Special Event" means an Investment Company Act Event or Tax Event.

         "Stated Maturity" means ____ __, ____.

         "Tax Event" means that the Company shall have received an Opinion of
Counsel experienced in such matters to the effect that, as a result of (a) any
amendment to, or change (including any announced prospective change) in, laws
(or any regulations thereunder) of the United States or any political
subdivision or taxing authority thereof or therein or (b) any amendment to, or
change in, an interpretation or application of such laws or regulations, there
is more than an insubstantial risk that (i) the Securities Trust would be
subject to United States federal income tax with respect to income accrued or
received on the Series __ Notes, (ii) interest payable to the Securities Trust
on the Series __ Notes would not be deductible by the Company for United States
federal income tax purposes, or (iii) the Securities Trust would be subject to
more than a de minimis amount of other taxes, duties or other governmental
charges, which change or amendment becomes effective on or after the Original
Issue Date.

         SECTION 103. Payment of Principal and InterestSECTION 103. Payment of
Principal and Interest. The unpaid principal amount of the Series __ Notes shall
bear interest at the rate of _____% per annum until paid or duly provided for.
Interest shall be paid semi-annually in arrears on each Interest Payment Date to
the Person in whose name the Series __ Notes are registered on the Regular
Record Date for such Interest Payment Date, provided that interest payable at
the Stated Maturity of principal or on a Redemption Date as provided herein will
be paid to the Person to whom principal is payable. So long as an Extension
Period is not occurring, any such interest that is not so punctually paid or
duly provided for will forthwith cease to be payable to the Holders on such
Regular Record Date and may either be paid to the Person or Persons in whose
name the Series __ Notes are registered at the close of business on a Special
Record Date for the payment of such defaulted interest to be fixed by the
Trustee ("Special Record Date"), notice whereof shall be given to Holders of the
Series __ Notes not less than ten (10) days prior to such Special Record Date,
or be paid at any time in any other lawful manner not inconsistent with the
requirements of any securities exchange, if any, on which the Series __ Notes
shall be listed, and upon such notice as may be required by any such exchange,
all as more fully provided in the Original Indenture.

         Payments of interest on the Series __ Notes will include interest
accrued to but excluding the respective Interest Payment Dates. Interest
payments for the Series __ Notes shall be computed and paid on the basis of a
360-day year of twelve 30-day months. In the event that any date on which
interest is payable on the Series __ Notes is not a Business Day, then a payment
of the interest payable on such date will be made on the next succeeding day
that is a Business Day, except that, if such Business Day is in the next
succeeding calendar year, such payment shall be made on the immediately
preceding Business Day, in each case with the same force and effect as if made
on the date the payment was originally payable.

         Payment of the principal and interest (including Additional Interest,
if any) due at the Stated Maturity or earlier redemption of the Series __ Notes
shall be made upon surrender of the Series __ Notes at the Corporate Trust
Office of the Trustee, in such coin or currency of the United States of America
as at the time of payment is legal tender for payment of public and private
debts. Payments of interest (including interest on any Interest Payment Date)
will be made, subject to such surrender where applicable, at the option of the
Company, (i) by check mailed to the address of the Person entitled thereto as
such address shall appear in the Security Register or (ii) by wire transfer at
such place and to such account at a banking institution in the United States as
may be designated in writing to the Trustee at least sixteen (16) days prior to
the date for payment by the Person entitled thereto.

         The Company shall pay, as additional interest on the Series __ Notes,
when due to the United States or any other taxing authority, the amounts set
forth in clause (i) of the definition of Additional Interest.

         SECTION 104. Deferral of Interest PaymentsSECTION 104. Deferral of
Interest Payments. The Company has the right at any time and from time to time
to extend the interest payment period of the Series __ Notes for up to ten (10)
consecutive semi-annual periods (each, an "Extension Period"), but not beyond
the Stated Maturity. Notwithstanding the foregoing, the Company has no right to
extend its obligation to pay such amounts as are defined in clause (i) of the
definition of Additional Interest. Prior to the termination of any such
Extension Period, the Company may further extend the interest payment period,
provided that such Extension Period, together with all such previous and further
extensions of that Extension Period, shall not exceed ten (10) consecutive
semi-annual periods. Upon the termination of any such Extension Period and upon
the payment of all accrued and unpaid interest and any Additional Interest then
due, the Company may select a new Extension Period, subject to the above
limitations and requirements.

         Upon the termination of any Extension Period, which termination shall
be on an Interest Payment Date, the Company shall pay all Deferred Interest on
the next succeeding Interest Payment Date to the Person in whose name the Series
__ Notes are registered on the Regular Record Date for such Interest Payment
Date, provided that Deferred Interest payable at Stated Maturity or on any
Redemption Date will be paid to the Person to whom principal is payable.

         If the Company shall have given notice of its election to select any
Extension Period, the Company shall not (i) declare or pay any dividend or
distribution on, or redeem, purchase, acquire or make a liquidation payment with
respect to, any of its capital stock, or make any guarantee payments with
respect to the foregoing and (ii) make any payment of interest, principal or
premium, if any, on or repay, repurchase or redeem any debt securities
(including guarantees other than its guarantee of the Capital Securities issued
by the Securities Trust) issued by the Company that rank pari passu with or
junior to the Series __ Notes.

         The Company shall give the Holder or Holders of the Series __ Notes and
the Trustee notice, as provided in Sections 105 and 106, respectively, of the
Original Indenture, of its selection or extension of an Extension Period at
least one Business Day prior to the earlier of (i) the Regular Record Date
relating to the Interest Payment Date on which the Extension Period is to
commence or relating to the Interest Payment Date on which an Extension Period
that is being extended would otherwise terminate, or (ii) the date the Company
or Securities Trust is required to give notice to the New York Stock Exchange or
other applicable self-regulatory organization of the record date or the date
such distributions are payable. The Company shall cause the Securities Trust to
give notice of the Company's selection of such Extension Period to Holders of
the Trust Securities. The month in which any notice is given pursuant to the
immediately preceding sentence of this Section shall constitute the first month
of the first semi-annual period of the ten (10) semi-annual periods, which
comprise the Maximum Extension Period.

         At any time any of the foregoing notices are given to the Trustee, the
Company shall give to the Paying Agent for the Series __ Notes such information
as said Paying Agent shall reasonably require in order to fulfill its tax
reporting obligations with respect to such Series __ Notes.

      SECTION 105. Denominations. The Series __ Notes may be issued in the
denominations of $___, or any integral multiple thereof.

         SECTION 106. Global SecuritiesSECTION 106. Global Securities. If the
Series __ Notes are distributed to Holders of the Trust Securities of the
Securities Trust in liquidation of such Holders' interests therein, the Series
__ Notes will be issued in the form of one or more Global Securities registered
in the name of the Depositary (which shall be The Depositary Trust Company) or
its nominee. Except under the limited circumstances described below, Series __
Notes represented by the Global Security will not be exchangeable for, and will
not otherwise be issuable as, Series __ Notes in definitive form. The Global
Securities described above may not be transferred except by the Depositary to a
nominee of the Depositary or by a nominee of the Depositary to the Depositary or
another nominee of the Depositary or to a successor Depositary or its nominee.

         Owners of beneficial interests in such a Global Security will not be
considered the Holders thereof for any purpose under the Indenture, and no
Global Security representing a Series A Note shall be exchangeable, except for
another Global Security of like denomination and tenor to be registered in the
name of the Depositary or its nominee or to a successor Depositary or its
nominee. The rights of Holders of such Global Security shall be exercised only
through the Depositary.

         A Global Security shall be exchangeable for Series __ Notes registered
in the names of persons other than the Depositary or its nominee only if (i) the
Depositary notifies the Company that it is unwilling or unable to continue as a
Depositary for such Global Security and no successor Depositary shall have been
appointed, or if at any time the Depositary ceases to be a clearing agency
registered under the Securities Exchange Act of 1934, as amended, at a time when
the Depositary is required to be so registered to act as such Depositary and no
successor Depositary shall have been appointed, (ii) the Company in its sole
discretion determines that such Global Security shall be so exchangeable, or
(iii) there shall have occurred an Event of Default with respect to the Series
__ Notes. Any Global Security that is exchangeable pursuant to the preceding
sentence shall be exchangeable for Series __ Notes registered in such names as
the Depositary shall direct.

     SECTION 107.  Transfer.  No service charge will be made for any transfer or
exchange of Series __ Notes, but payment will be required of a sum sufficient to
cover any tax or other  governmental  charge  that may be imposed in  connection
therewith.

         The Company shall not be required (a) to issue, transfer or exchange
any Series __ Notes during a period beginning at the opening of business fifteen
(15) days before the day of the mailing of a notice identifying the serial
numbers of the Series __ Notes to be called for redemption, and ending at the
close of business on the day of the mailing, or (b) to transfer or exchange any
Series __ Notes theretofore selected for redemption in whole or in part, except
the unredeemed portion of any Series A Note redeemed in part.

     SECTION 108. Redemption. The Series __ Notes shall be subject to redemption
at the option of the Company,  in whole or in part,  at any time or from time to
time on or after  _________ __, ____ or at any time in whole upon the occurrence
of a Special Event; provided, however, that if a redemption in part shall result
in the delisting of the Capital  Securities  issued by the Securities Trust, the
Company may only redeem the Series __ Notes in whole.

         "Redemption Price", in the case of a redemption, in whole or in part,
at the option of the Company, but not upon the occurrence of a Special Event,
shall equal the following prices expressed in percentages of the principal
amount together with accrued interest to but excluding the date fixed for
redemption. If redeemed during the 12-month period beginning ____________, ____;

                                                    Redemption
         Year                                         Price
         ----                                         -----
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %
                 ................................          %

and at 100% on or after _____________, ____.

         Upon the occurrence of a Special Event at any time, the Company may,
within ninety (90) days following the occurrence thereof and subject to the
terms and conditions of the Indenture, elect to redeem the Series __ Notes, in
whole.

         "Redemption Price", in the case of a redemption following a Special
Event, means for each Series ___ Note a price equal to the greater of (i) 100%
of the principal amount of the Series __ Notes being redeemed or (ii) the sum of
the present values of the remaining scheduled payments of principal of and
interest on the Series ___ Notes being redeemed discounted to the date of
redemption on a semi-annual basis (assuming a 360-day year consisting of twelve
30-day months) at a discount rate equal to the Treasury Yield plus ___ basis
points, plus, for (i) and (ii) above, whichever is applicable, accrued interest
to the date of redemption).

         "Treasury Yield" means, with respect to any redemption date, the rate
per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such redemption date.

         "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of Series ___ Notes to be redeemed that would be utilized, at
the time of selection and in accordance with customary financial practice, in
pricing new issues to corporate debt securities of comparable maturity to the
remaining term of the Series ___ Notes.

         "Comparable Treasury Price" means, with respect to any redemption date,
(i) the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) the third
business day in New York City preceding such redemption date, as set forth in
the daily statistical release (or any successor release) published by the
Federal Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations
for US Government Securities" or (ii) if such release (or any successor release)
is not published or does not contain such prices on such business day, the
Reference Treasury Dealer Quotation for such redemption date.

         "Independent Investment Banker" means an independent investment banking
institution of national standing appointed by the Company.

         "Reference Treasury Dealer" means a primary US Government securities
dealer in New York City appointed by the Company and reasonably acceptable to
the Indenture Trustee.

         "Reference Treasury Dealer Quotation" means, with respect to the
Reference Treasury Dealer and any redemption date, the average, as determined by
the Indenture Trustee, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount and quoted
in writing to the Indenture Trustee by such Reference Treasury Dealer at 5:00
p.m. on the third business day in New York City preceding such redemption date).

         In the event of redemption of the Series __ Notes in part only, a new
Series __ Note or Notes for the unredeemed portion will be issued in the name or
names of the Holders thereof upon the surrender thereof.

         The Series __ Notes will not have a sinking fund.

         Notice of redemption shall be given to the Holders as provided in
Section 1104 of the Original Indenture. The Company will notify the Trustee of
the applicable Redemption Price promptly after the calculation thereof. Any
notice of such redemption under the Indenture need not set forth such Redemption
Price but only the manner of calculation thereof.

     Any redemption of less than all of the Series __ Notes shall,  with respect
to the principal thereof, be divisible by $___.


                                    ARTICLE 2

                            Miscellaneous Provisions

     SECTION 201. Recitals by Company.  The recitals in this First  Supplemental
Indenture  are made by the Company only and not by the  Trustee,  and all of the
provisions  contained  in the  Original  Indenture  in  respect  of the  rights,
privileges,  immunities, powers and duties of the Trustee shall be applicable in
respect of Series __ Notes and of this First Supplemental Indenture as fully and
with like effect as if set forth herein in full.

     SECTION 202.  Ratification  and  Incorporation  of Original  Indenture.  As
supplemented  hereby,  the Original  Indenture  is in all respects  ratified and
confirmed,  and the Original Indenture, as heretofore supplemented and modified,
and this First Supplemental  Indenture shall be read, taken and construed as one
and the same instrument.

     SECTION 203. Executed in Counterparts.  This First  Supplemental  Indenture
may be simultaneously  executed in several counterparts,  each of which shall be
deemed to be an original,  and such counterparts  shall together  constitute but
one and the same instrument.

         SECTION 204. Listing of NotesSECTION 204. Listing of Notes. If the
Series __ Notes are to be issued as a Global Security in connection with the
distribution of the Series __ Notes to the Holders of the Capital Securities
issued by the Securities Trust, the Company will use its best efforts to list
such Series __ Notes on the New York Stock Exchange or any such other exchange
on which such Capital Securities are then listed and traded.










                  IN WITNESS WHEREOF, each party hereto has caused this
instrument to be signed in its name and behalf by its duly authorized officers,
all as of the day and year first above written.

ATTEST:                                              MISSISSIPPI POWER COMPANY


By:                                                           By:





ATTEST:                                              BANKERS TRUST COMPANY


By:                                                           By:






                                    EXHIBIT A

                             FORM OF SERIES __ NOTE











NO. 1                                                     CUSIP NO. __________



THE INDEBTEDNESS EVIDENCED BY THIS SECURITY IS, TO THE EXTENT PROVIDED IN THE
INDENTURE, SUBORDINATE AND SUBJECT IN RIGHT OF PAYMENT TO THE PRIOR PAYMENT IN
FULL OF ALL SENIOR INDEBTEDNESS AND THIS SECURITY IS ISSUED SUBJECT TO THE
PROVISIONS OF THE INDENTURE WITH RESPECT THERETO.

                            MISSISSIPPI POWER COMPANY
                    SERIES __ ____% JUNIOR SUBORDINATED NOTE
                                DUE ____ __, ____


Principal Amount:           $_________

Regular Record Date:        15th calendar day prior to Interest Payment Date

Original Issue Date:        ________ __, 19__

Stated Maturity:            ____ __, ____

Interest Payment Dates:     _____________ __ and _____________ __

Interest Rate:              _____% per annum

Authorized Denomination:    $___

Initial Redemption Date:    ________ __, ___


         Mississippi Power Company, a Mississippi corporation (the "Company",
which term includes any successor corporation under the Indenture referred to on
the reverse hereof), for value received, hereby promises to pay to Bankers Trust
Company as Property Trustee of Mississippi Power Capital Trust ___, a Delaware
business trust, or registered assigns, the principal sum of _________ DOLLARS
($__________) on the Stated Maturity shown above (or upon earlier redemption),
and to pay interest thereon from the Original Issue Date shown above, or from
the most recent Interest Payment Date to which interest has been paid or duly
provided for, semi-annually in arrears on each Interest Payment Date as
specified above, commencing on the Interest Payment Date next succeeding the
Original Issue Date shown above and on the Stated Maturity (or upon earlier
redemption) at the rate per annum shown above until the principal hereof is paid
or made available for payment and on any overdue principal and on any overdue
installment of interest. The interest so payable, and punctually paid or duly
provided for, on any Interest Payment Date (other than an Interest Payment Date
that is the Stated Maturity or on a Redemption Date) will, as provided in such
Indenture, be paid to the Person in whose name this Note (the "Note") is
registered at the close of business on the Regular Record Date as specified
above next preceding such Interest Payment Date, provided that any interest
payable at Stated Maturity or on any Redemption Date will be paid to the Person
to whom principal is payable. Except as otherwise provided in the Indenture, any
such interest not so punctually paid or duly provided for will forthwith cease
to be payable to the Holder on such Regular Record Date and may either be paid
to the Person in whose name this Note is registered at the close of business on
a Special Record Date for the payment of such defaulted interest to be fixed by
the Trustee, notice whereof shall be given to Holders of Notes of this series
not less than 10 days prior to such Special Record Date, or be paid at any time
in any other lawful manner not inconsistent with the requirements of any
securities exchange, if any, on which the Notes of this series shall be listed,
and upon such notice as may be required by any such exchange, all as more fully
provided in the Indenture.

         Payments of interest on this Note will include interest accrued to but
excluding the respective Interest Payment Dates. Interest payments for this Note
shall be computed and paid on the basis of a 360-day year of twelve 30-day
months. In the event that any date on which interest is payable on this Note is
not a Business Day, then payment of the interest payable on such date will be
made on the next succeeding day that is a Business Day, except that, if such
Business Day is in the next succeeding calendar year, payment shall be made on
the immediately preceding Business Day, in each case with the same force and
effect as if made on the date the payment was originally payable. A "Business
Day" shall mean any day other than a Saturday or a Sunday or a day on which
banking institutions in New York City are authorized or required by law or
executive order to remain closed or a day on which the Corporate Trust Office of
the Trustee or the principal corporate trust office of the Property Trustee of
the Securities Trust are closed for business.

         The Company shall have the right at any time and from time to time
during the term of this Note to extend the interest payment period of such Note
for up to 10 consecutive semi-annual periods but not beyond the Stated Maturity
of this Note (each, an "Extension Period"), during which periods unpaid interest
(together with interest thereon) will compound semi-annually at the Interest
Rate ("Deferred Interest"). Upon the termination of each Extension Period, which
shall be an Interest Payment Date, the Company shall pay all Deferred Interest
on the next succeeding Interest Payment Date to the Person in whose name this
Note is registered at the close of business on the Regular Record Date for such
Interest Payment Date, provided that any Deferred Interest payable at Stated
Maturity or on any Redemption Date will be paid to the Person to whom principal
is payable. Prior to the termination of any such Extension Period, the Company
may extend the interest payment period, provided that such Extension Period
together with all such previous and further extensions thereof shall not exceed
10 consecutive semi-annual periods. Upon the termination of any such Extension
Period, and the payment of all accrued and unpaid interest and any Additional
Interest then due, the Company may select a new Extension Period, subject to the
above requirements. If the Company shall have given notice of its election to
select any Extension Period, the Company shall not (i) declare or pay any
dividend or distribution on, or redeem, purchase, acquire or make a liquidation
payment with respect to, any of its capital stock, or make any guarantee
payments with respect to the foregoing and (ii) make any payment of interest,
principal or premium, if any, on or repay, repurchase or redeem any debt
securities (including guarantees other than its guarantee of the Capital
Securities issued by the Securities Trust) issued by the Company that rank pari
passu with or junior to this Note. The Company shall give the Holder of this
Note and the Trustee notice of its selection or extension of an Extension Period
at least one Business Day prior to the earlier of (i) the Regular Record Date
relating to the Interest Payment Date on which the Extension Period is to
commence or relating to the Interest Payment Date on which an Extension Period
that is being extended would otherwise terminate or (ii) the date the Company or
Securities Trust is required to give notice to the New York Stock Exchange or
other applicable self-regulatory organization of the record date or the date
distributions are payable.

         The Company also shall be obligated to pay when due and without
extension all additional amounts as may be required so that the net amount
received and retained by the Holder of this Note (if the Holder is a Securities
Trust) after paying taxes, duties, assessments or governmental charges of
whatever nature (other than withholding taxes) imposed by the United States or
any other taxing authority will not be less than the amounts such Holder would
have received had no such taxes, duties, assessments, or other governmental
charges been imposed.

         Payment of the principal of and interest (including Additional
Interest, if any) due at the Stated Maturity or earlier redemption of the Series
__ Notes shall be made upon surrender of the Series __ Notes at the Corporate
Trust Office of the Trustee, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts. Payment of interest (including interest on an Interest Payment
Date) will be made, subject to such surrender where applicable, at the option of
the Company, (i) by check mailed to the address of the Person entitled thereto
as such address shall appear in the Security Register or (ii) by wire transfer
at such place and to such account at a banking institution in the United States
as may be designated in writing to the Trustee at least 16 days prior to the
date for payment by the Person entitled thereto.

         The indebtedness evidenced by this Note is, to the extent provided in
the Indenture, subordinate and subject in right of payment to the prior payment
in full of all Senior Indebtedness (as defined in the Indenture), and this Note
is issued subject to the provisions of the Indenture with respect thereto. Each
Holder of this Note, by accepting the same, (a) agrees to and shall be bound by
such provisions, (b) authorizes and directs the Trustee on his behalf to take
such action as may be necessary or appropriate to effectuate the subordination
so provided, and (c) appoints the Trustee his attorney-in-fact for any and all
such purposes. Each Holder hereof, by his acceptance hereof, waives all notice
of the acceptance of the subordination provisions contained herein and in the
Indenture by each holder of Senior Indebtedness, whether now outstanding or
hereafter incurred, and waives reliance by each such holder upon said
provisions.

         REFERENCE IS HEREBY MADE TO THE FURTHER PROVISIONS OF THIS NOTE SET
FORTH ON THE REVERSE HEREOF, WHICH FURTHER PROVISIONS SHALL FOR ALL PURPOSES
HAVE THE SAME EFFECT AS IF SET FORTH AT THIS PLACE.

         Unless the certificate of authentication hereon has been executed by
the Trustee by manual signature, this Note shall not be entitled to any benefit
under the Indenture or be valid or obligatory for any purpose.












         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:  ________ __, 19__.

                                                     MISSISSIPPI POWER COMPANY



                                                     By:




Attest:







                {Seal of MISSISSIPPI POWER COMPANY appears here}














                          CERTIFICATE OF AUTHENTICATION

         This is one of the Notes referred to in the within-mentioned Indenture.

                                           BANKERS TRUST COMPANY,
                                           as Trustee


                                           By:
                                                    Authorized Officer





                             (Reverse Side of Note)


         This Note is one of a duly authorized issue of Junior Subordinated
Notes of the Company (the "Notes"), issued and issuable in one or more series
under a Subordinated Note Indenture, dated as of ________ __, 19__, as
supplemented (the "Indenture"), between the Company and Bankers Trust Company,
Trustee (the "Trustee," which term includes any successor trustee under the
Indenture), to which Indenture and all indentures incidental thereto reference
is hereby made for a statement of the respective rights, limitation of rights,
duties and immunities thereunder of the Company, the Trustee and the Holders of
the Notes issued thereunder and of the terms upon which said Notes are, and are
to be, authenticated and delivered. This Note is one of the series designated on
the face hereof as Series __ ____% Junior Subordinated Notes due ____ __, ____
(the "Series __ Notes") in the aggregate principal amount of up to $________.
Capitalized terms used herein for which no definition is provided herein shall
have the meanings set forth in the Indenture.

         The Company shall have the right, subject to the terms and conditions
of the Indenture, to redeem this Note, in whole or in part, at any time on or
after _______ __, ____ at the option of the Company, or at any time in whole
upon the occurrence of a Special Event.

         "Redemption Price", in the case of a redemption, in whole or in part,
at the option of the Company, but not upon the occurrence of a Special Event,
shall equal the following prices expressed in percentages of the principal
amount together with accrued interest to but excluding the date fixed for
redemption. If redeemed during the 12-month period beginning _____________,
____.

                                                        Redemption
         Year                                              Price
         ----                                              -----
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %
               ........................................       %

and at 100% on or after _____________, ____.

         Upon the occurrence of a Special Event (as defined below) at any time,
the Company may, within 90 days following the occurrence thereof and subject to
the terms and conditions of the Indenture, redeem this Note, in whole.

         "Redemption Price", in the case of a redemption following a Special
Event, means for each Series ___ Note a price equal to the greater of (i) 100%
of the principal amount of the Series __ Notes being redeemed or (ii) the sum of
the present values of the remaining scheduled payments of principal of and
interest on the Series ___ Notes being redeemed discounted to the date of
redemption on a semi-annual basis (assuming a 360-day year consisting of twelve
30-day months) at a discount rate equal to the Treasury Yield plus __ basis
points, plus, for (i) and (ii) above, whichever is applicable, accrued interest
to the date of redemption).

         "Treasury Yield" means, with respect to any redemption date, the rate
per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such redemption date.

         "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of Series ___ Notes to be redeemed that would be utilized, at
the time of selection and in accordance with customary financial practice, in
pricing new issues to corporate debt securities of comparable maturity to the
remaining term of the Series ___ Notes.

         "Comparable Treasury Price" means, with respect to any redemption date,
(i) the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
business day in New York City preceding such redemption date, as set forth in
the daily statistical release (or any successor release) published by the
Federal Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations
for US Government Securities" or (ii) if such release (or any successor release)
is not published or does not contain such prices on such business day, the
Reference Treasury Dealer Quotation for such redemption date.

         "Independent Investment Banker" means an independent investment banking
institution of national standing appointed by the Company.

         "Reference Treasury Dealer" means a primary US Government securities
dealer in New York City appointed by the Company and reasonably acceptable to
the Indenture Trustee.

         "Reference Treasury Dealer Quotation" means, with respect to the
Reference Treasury Dealer and any redemption date, the average, as determined by
the Indenture Trustee, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount and quoted
in writing to the Indenture Trustee by such Reference Treasury Dealer at 5:00
p.m. on the third business day in New York City preceding such redemption date).

         A Special Event may be a Tax Event or an Investment Company Act Event.
"Tax Event" means that the Company shall have received an Opinion of Counsel
experienced in such matters to the effect that, as a result of (a) any amendment
to, or change (including any announced prospective change) in, laws (or any
regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein or (b) any amendment to, or change in, an
interpretation or application of such laws or regulations, there is more than an
insubstantial risk that (i) the related Securities Trust would be subject to
United States federal income tax with respect to income accrued or received on
the Series __ Notes, (ii) interest payable to the related Securities Trust would
not be deductible by the Company for United States federal income tax purposes,
or (iii) the related Securities Trust would be subject to more than a de minimis
amount of other taxes, duties or other governmental charges, which change or
amendment becomes effective on or after the Original Issue Date. "Investment
Company Act Event" means that the Company shall have received an Opinion of
Counsel to the effect that, as a result of the occurrence of a change in law or
regulation or a written change in interpretation or application of law or
regulation by any legislative body, court, governmental agency or regulatory
authority, there is more than an insubstantial risk that the related Securities
Trust is or will be considered an "investment company" which is required to be
registered under the Investment Company Act of 1940, as amended, which change
becomes effective on or after the Original Issue Date.

         The Company will notify the Trustee of the applicable Redemption Price
promptly after the calculation thereof. Any notice of such redemption under the
Indenture need not set forth such Redemption Price but only the manner of
calculation thereof.

     In the event of  redemption  of this Note in part only, a new Note or Notes
of this series for the  unredeemed  portion hereof will be issued in the name of
the Holder hereof upon the surrender  hereof.  The Notes will not have a sinking
fund.

         If an Event of Default with respect to the Notes of this series shall
occur and be continuing, the principal of the Notes of this series may be
declared due and payable in the manner, with the effect and subject to the
conditions provided in the Indenture.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Notes of each series to be affected
under the Indenture at any time by the Company and the Trustee with the consent
of the Holders of not less than a majority in principal amount of the Notes at
the time Outstanding of each series to be affected. The Indenture also contains
provisions permitting the Holders of specified percentages in principal amount
of the Notes of each series at the time Outstanding, on behalf of the Holders of
all Notes of such series, to waive compliance by the Company with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences. Any such consent or waiver by the Holder of this Note shall
be conclusive and binding upon such Holder and upon all future Holders of this
Note and of any Note issued upon the registration of transfer hereof or in
exchange hereof or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Note.

         No reference herein to the Indenture and no provision of this Note or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of and interest on this Note at
the times, place and rate, and in the coin or currency, herein prescribed.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Note is registrable in the Security Register,
upon surrender of this Note for registration of transfer at the office or agency
of the Company for such purpose, duly endorsed by, or accompanied by a written
instrument of transfer in form satisfactory to the Company and the Security
Registrar and duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Notes of this series, of
authorized denominations and of like tenor and for the same aggregate principal
amount, will be issued to the designated transferee or transferees. No service
charge shall be made for any such registration of transfer or exchange, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith.

         Prior to due presentment of this Note for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
Person in whose name this Note is registered as the owner hereof for all
purposes, whether or not this Note be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

         The Notes of this series are issuable only in registered form without
coupons in denominations of $___ and any integral multiple thereof. As provided
in the Indenture and subject to certain limitations therein set forth, Notes of
this series are exchangeable for a like aggregate principal amount of Notes of
this series of a different authorized denomination, as requested by the Holder
surrendering the same upon surrender of the Note or Notes to be exchanged at the
office or agency of the Company.

         This Note shall be governed by, and construed in accordance with, the
internal laws of the State of New York.





                                  ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this
instrument, shall be construed as though they were written out in full according
to applicable laws or regulations:









TEN COM- as tenants in           UNIF GIFT MIN ACT- _______ Custodian ________
         common                                    (Cust)              (Minor)
TEN ENT- as tenants by the
         entireties                            under Uniform Gifts to
 JT TEN- as joint tenants                      Minors Act
         with right of
         survivorship and                 ________________________
         not as tenants                         (State)
         in common


                    Additional abbreviations may also be used
                          though not on the above list.


     FOR VALUE  RECEIVED,  the undersigned  hereby sell(s) and transfer(s)  unto
(please insert Social Security or other identifying number of assignee)


     PLEASE PRINT OR TYPEWRITE  NAME AND ADDRESS,  INCLUDING  POSTAL ZIP CODE OF
ASSIGNEE



     the within Note and all rights thereunder,  hereby irrevocably constituting
and appointing



agent to transfer said Note on the books of the Company, with full power of
substitution in the premises.


Dated:



                                            NOTICE: The signature to this
                                            assignment must correspond with the
                                            name as written upon the face of the
                                            within instrument in every
                                            particular without alteration or
                                            enlargement, or any change whatever.






                                    EXHIBIT B



                          CERTIFICATE OF AUTHENTICATION


         This is one of the Notes referred to in the within-mentioned Indenture.

                                            BANKERS TRUST COMPANY,
                                            as Trustee


                                            By:
                                                     Authorized Officer