EXHIBIT 10(o)
                  AMERICAN ELECTRIC POWER SYSTEM
                  SENIOR EXECUTIVE SEVERANCE PLAN
                          FOR MERGER WITH
                CENTRAL AND SOUTH WEST CORPORATION

                           Introduction


      American Electric Power Company, Inc. ("AEP"), a New York corporation, and
Central and South West Corporation ("CSW"), a Delaware corporation, have entered
into an Agreement  and Plan of Merger dated as of December 21, 1997 (the "Merger
Agreement"), whereby AEP and CSW will be parties to a merger (the "Combination")
with AEP as the parent of CSW. AEP recognizes  that the  uncertainty  during the
pendency of the  Combination,  and the  inevitable  adjustments  that will occur
during the transition  period following the Combination,  may result in the loss
or distraction of employees of its  subsidiaries to the detriment of AEP and its
shareholders.

      AEP considers the avoidance of such loss and  distraction  to be essential
to protecting and enhancing the best interests of AEP and its shareholders.  AEP
also believes  that during the pendency of the  Combination  and the  transition
period  thereafter,  AEP should be able to receive and rely on dedicated service
from employees of its subsidiaries without concern that those employees might be
distracted or concerned by personal uncertainties and risks.

      In  addition,  AEP  believes  that it is  consistent  with the  employment
practices and policies of its  subsidiaries and in the best interests of AEP and
its shareholders to treat fairly those employees whose employment  terminates as
a result of the Combination.

      Accordingly,  AEP has determined that appropriate steps should be taken by
its  subsidiaries  to assure AEP of the continued  employment  and attention and
dedication  to duty of the employees of its  subsidiaries  and to seek to ensure
the availability of their continued service, notwithstanding the Combination.

      Therefore,  in order to fulfill the above purposes, the following plan has
been  developed  and is  hereby  adopted  by  American  Electric  Power  Service
Corporation, a subsidiary of AEP.


                             ARTICLE I
                       ESTABLISHMENT OF PLAN


      As of March 1, 1999,  American Electric Power Service  Corporation  hereby
establishes a separation  compensation plan known as the American Electric Power
System Senior  Executive  Severance  Plan For Merger With Central And South West
Corporation, as set forth in this document.

                            ARTICLE II
                            DEFINITIONS

      As used herein the  following  words and phrases  shall have the following
respective meanings unless the context clearly indicates otherwise.

       (a)  "Annual Compensation" means the sum of a Participant's
Annual Salary and the Participant's Target Annual Incentive.

      (b) "Annual  Salary" means the  Participant's  regular  annual base salary
immediately  prior to the  Participant's  termination of  employment,  including
compensation  converted  to other  benefits  under a  flexible  pay  arrangement
maintained  by the  Corporation  or  deferred  pursuant  to a  written  plan  or
agreement with the Corporation, but excluding overtime pay, allowances,  premium
pay,  compensation paid or payable under any of the  Corporation's  long-term or
short-term incentive plans or any similar payments.

      (c)  "Board"  means the Board of  Directors  of  American  Electric  Power
Company, Inc., a New York corporation.

      (d) "Code" means the Internal  Revenue Code of 1986,  as amended from time
to time.

      (e) "Corporation" means American Electric Power Service Corporation, a New
York corporation, and any of its subsidiary companies, divisions,  organizations
or affiliates.

      (f) "Date of Termination"  means the date on which a Participant ceases to
be employed by the Corporation.

      (g)  "Effective  Time" means the Effective  Time, as defined in the Merger
Agreement.

      (h)  "Participant"  means an individual who is designated as such pursuant
to Section 3.1.

      (i) "Plan"  means the American  Electric  Power  System  Senior  Executive
Severance Plan For Merger With Central And South West Corporation.

      (j) "Separation Benefits" means the benefits described in Section 4.3 that
are provided to qualifying Participants under the Plan.

      (k) "Separation Period" means the period beginning on a Participant's Date
of Termination and ending on the earlier of (i) the third  anniversary  thereof,
or (ii)  the  first  day of the  month  coincident  with or next  following  the
Participant's 65th birthday.

      (l) "Target Annual  Incentive" means the award that the Participant  would
have received under the Senior Officer Annual Incentive Compensation Plan or the
AEP Energy Services,  Inc. Incentive Compensation Plan for the year in which the
Participant's Date of Termination occurs, if 100% of the annual target award had
been earned.


                                   ARTICLE III
                                   ELIGIBILITY

      3.1  Participation.  Each of the  individuals  named on  Schedule 1 hereto
shall be a Participant in the Plan.  With the approval of the Board,  Schedule 1
may be  amended  by the  Corporation  from  time to time to add  individuals  as
Participants;  provided,  however,  the Corporation  shall not have the right to
amend Schedule 1 to remove any  individual,  except that a Participant  shall be
removed from Schedule 1 if the Participant's  salary, duties or responsibilities
are  materially  altered  for  reasons  other  than  the  Combination,   or  the
Participant's employment is terminated for cause.

      3.2  Duration of  Participation.  A  Participant  shall only cease to be a
Participant  in the Plan as a result of an amendment or  termination of the Plan
complying  with  Article VI of the Plan,  or when the  Participant  ceases to be
employed by the Corporation,  unless,  at the time the Participant  ceases to be
employed,  such  Participant  is entitled to payment of a Separation  Benefit as
provided  in the Plan or there  has been an  event or  occurrence  described  in
Section 4.2(a) which would enable the  Participant  to terminate  employment and
receive a Separation Benefit. A Participant  entitled to payment of a Separation
Benefit or any other  amount under the Plan shall  remain a  Participant  in the
Plan  until the full  amount of the  Separation  Benefit  and any other  amounts
payable under the Plan have been paid to the Participant.


                               ARTICLE IV
                               SEPARATION BENEFITS

      4.1 Right to  Separation  Benefit.  A  Participant  shall be  entitled  to
receive  Separation  Benefits in accordance  with Section 4.3 if the Participant
ceases to be employed by the  Corporation  for any reason  specified  in Section
4.2(a).

      4.2  Termination of Employment.

      (a) Terminations  Which Give Rise to Separation  Benefits Under This Plan.
Except as set forth in subsection (b) below, a Participant  shall be entitled to
Separation  Benefits  if at  any  time  before  the  second  anniversary  of the
Effective Time (or, if the Combination  has not occurred,  before the expiration
of the Plan as set forth in Section 6.1 hereof):

           (i)  the Participant is involuntarily terminated by the
      Corporation; or

           (ii) the  Participant's  Annual Salary is reduced below the higher of
      (x) the  amount in effect on March 1, 1999 and (y) the  highest  amount in
      effect at any time  thereafter,  excluding  situations  where  the  salary
      reduction is due to the reassignment of a Participant  returning to active
      employment after a period of disability,  and the Participant ceases to be
      employed by the Corporation or by the  Participant's  own action within 90
      days after the occurrence of such reduction; or

           (iii) the Chief Executive  Officer of the Corporation,  in his or her
      sole   discretion,   determines   that  the   Participant's   duties   and
      responsibilities  or the program of incentive  compensation and retirement
      and  welfare  benefits  offered  to the  Participant  are  materially  and
      adversely  diminished in comparison to the duties and  responsibilities or
      the program of benefits  enjoyed by the  Participant on March 1, 1999, and
      the  Participant  ceases to be  employed by the  Participant's  own action
      within 90 days after the occurrence after such reduction.

      (b) Terminations Which Do Not Give Rise to Separation  Benefits Under This
Plan.  If a  Participant's  employment  is  terminated  for  cause,  disability,
retirement,  or  voluntarily  by the  Participant  in the  absence  of an  event
described in  subsection  (a)(ii) or (iii) of this Section 4.2, the  Participant
shall not be entitled to Separation Benefits under the Plan.

           (i)  A  termination  for  disability  shall  have  occurred  where  a
      participant  is  terminated  because  illness or injury has  prevented the
      Participant  from  performing  the  Participant's  duties (as they existed
      immediately  prior to the  illness or injury) on a full time basis for 180
      consecutive business days; provided, however, a termination for Disability
      shall  not  have  occurred  if  such  termination  is  coincident  with or
      subsequent  to a  termination  which  otherwise  gives rise to  Separation
      Benefits under this Plan as set forth in this Section 4.2.

           (ii)  A  termination  by  retirement  shall  have  occurred  where  a
      Participant's  termination  is due to the  Participant's  voluntary  late,
      normal  or  early  retirement  under  a  pension  plan  sponsored  by  the
      Corporation,  as defined in such plan; provided, however, a termination by
      Retirement  shall not have occurred if such termination is coincident with
      or subsequent to a termination  which  otherwise  gives rise to Separation
      Benefits under this Plan as set forth in this Section 4.2.

            (iii)  A  termination   for  cause  shall  have  occurred   where  a
      Participant is terminated because of:

             (A) the willful and continued failure of the Participant to perform
           substantially  the Participant's  duties with the Corporation  (other
           than any such failure  resulting  from  incapacity due to physical or
           mental illness),  after a written demand for substantial  performance
           is delivered to the Participant by the Board or an elected officer of
           the Corporation which specifically identifies the manner in which the
           Board or the elected  officer  believes that the  Participant has not
           substantially performed the Participant's duties, or

             (B) the willful  engaging by the  Participant in illegal conduct or
           gross misconduct  which is materially and  demonstrably  injurious to
           AEP and the Corporation, as determined by the Chief Executive Officer
           of the Corporation.

For  purposes  of this  provision,  no act or failure to act, on the part of the
Participant,  shall be considered  "willful" unless it is done, or omitted to be
done,  by the  Participant  in bad faith or without  reasonable  belief that the
Participant's  action  or  omission  was in  the  best  interests  of AEP or the
Corporation.  Any act, or failure to act, based upon authority given pursuant to
a resolution  duly adopted by the Board or upon the advice of counsel for AEP or
the  Corporation,  shall be  conclusively  presumed to be done, or omitted to be
done, by the  Participant  in good faith and in the best interests of AEP or the
Corporation.

      4.3  Separation Benefits.

      (a) If a Participant's employment is terminated in circumstances entitling
the  Participant  to a  Separation  Benefit as provided in Section  4.2(a),  and
subject  to the  provisions  of  Section  4.5,  the  Corporation  shall pay such
Participant,  within ten days of the Date of Termination, a cash lump sum as set
forth in subsection (b) below and continuing benefits as set forth in subsection
(c) below. For purposes of determining the benefits set forth in subsections (b)
and (c), if the  termination  of the  Participant's  employment  is based upon a
reduction  of the  Participant's  Annual  Salary or  benefits  as  described  in
subsection (a)(ii) or (a)(iii) of Section 4.2, such reduction shall be ignored.

      (b) The cash  lump sum  referred  to in  Section  4.3(a)  shall  equal the
aggregate of the following amounts:

           (i)  an  amount   equal  to  the  sum  of  (1)  the  portion  of  the
      Participant's  Annual Salary through the Date of Termination to the extent
      not theretofore  paid, (2) the product of (x) the Target Annual  Incentive
      and (y) a fraction,  the  numerator of which is the number of days in such
      calendar  year through the Date of  Termination,  and the  denominator  of
      which is 365, and (3) any accrued vacation pay, in each case to the extent
      not  theretofore  paid  and in  full  satisfaction  of the  rights  of the
      Participant thereto; and

           (ii)  an  amount  equal  to  three  times  the  Participant's  Annual
      Compensation.

      (c) The continuing benefits referred to above shall be as follows:

           (i)  During  the  Separation   Period,   the   Participant   and  the
      Participant's  family shall be provided with medical and dental  insurance
      benefits  as if the  Participant's  employment  had not  been  terminated;
      provided, however, that if the Participant becomes reemployed with another
      employer  and is eligible  to receive  medical or other  welfare  benefits
      under  another  employer-provided  plan,  the  medical  and other  welfare
      benefits  described herein shall be secondary to those provided under such
      other plan during such applicable  period of eligibility.  For purposes of
      determining  eligibility (but not the time of commencement of benefits) of
      the Participant for retiree  medical and dental  insurance  benefits under
      the Corporation's plans, practices, programs and policies, the Participant
      shall be considered to have remained employed during the Separation Period
      and to have retired on the last day of such Separation Period; and

           (ii) The Corporation shall, at its sole expense as incurred,  provide
      the Participant with outplacement services the scope and provider of which
      shall be selected by the Participant in the Participant's  sole discretion
      (but at a cost to the  Employer  of not  more  than  $30,000)  or,  at the
      Participant's  option,  the use of comparable and accessible office space,
      office supplies and equipment and secretarial services for a period not to
      exceed one year.

To the extent any benefits  described in this Section  4.3(c) cannot be provided
pursuant to the appropriate plan or program  maintained by the Corporation,  the
Corporation  shall  provide  such  benefits  outside  such plan or program at no
additional cost (including without limitation tax cost) to the Participant.

      4.4  Other Benefits Payable.

      (a) The cash lump sum and  continuing  benefits  described  in Section 4.3
above shall be payable in addition to, and not in lieu of, all other  accrued or
vested or earned but deferred  compensation  (including  voluntary  deferrals of
regular salary and deferrals of long-term or short-term incentive compensation),
rights,  options or other  benefits  which may be owed to a Participant  upon or
following  termination,  including  but not  limited  to sick  pay,  amounts  or
benefits payable under any bonus or other compensation plans, stock option plan,
stock  ownership plan,  stock purchase plan,  life insurance plan,  health plan,
disability  plan or similar or successor plan but excluding any severance pay or
pay in lieu of notice required to be paid to such  Participant  under applicable
law.

      (b)  Notwithstanding the foregoing;

           (i) The Severance  payments and benefits  provided  under Section 4.3
      hereof shall be subject to, and conditioned  upon, the waiver of any other
      cash severance  payment  provided by the  Corporation.  No amount shall be
      payable  under  this  Plan to, or on  behalf  of the  Participant,  if the
      Participant  elects  benefits  under  any  other  cash  severance  plan or
      program,  or  any  other  special  pay  arrangement  with  respect  to the
      termination of the Participant's employment.

           (ii) The Participant agrees that at all times following  termination,
      the Participant  will not, without the prior written consent of AEP or the
      Corporation,  disclose to any person, firm or corporation any confidential
      information  of  AEP  or  the  Corporation  which  is  now  known  to  the
      Participant  or which  hereafter may become known to the  Participant as a
      result of the  Participant's  employment  or  association  with AEP or the
      Corporation  and which  could be  helpful  to a  competitor,  unless  such
      disclosure is required  under the terms of a valid and effective  subpoena
      or order issued by a court or governmental body; provided,  however,  that
      the foregoing  shall not apply to confidential  information  which becomes
      publicly  disseminated by means other than a breach of this provision.  It
      is  recognized  that  damages in the event of breach of this  Section  4.4
      (b)(ii) by the  Participant  would be  difficult,  if not  impossible,  to
      ascertain,  and it is  therefore  agreed that AEP or the  Corporation,  in
      addition  to and  without  limiting  any other  remedy or right AEP or the
      Corporation  may  have,  shall  have the right to an  injunction  or other
      equitable  relief in any court of competent  jurisdiction,  enjoining  any
      such breach,  and the  Participant  hereby waives any and all defenses the
      Participant  may have on the ground of lack of  jurisdiction or competence
      of the court to grant such an injunction or other  equitable  relief.  The
      existence  of this right shall not preclude  AEP or the  Corporation  from
      pursuing any other rights or remedies at law or in equity which AEP or the
      Corporation may have.

      4.5 Payment  Obligations  Absolute.  The obligations of the Corporation to
pay the  Separation  Benefits  described  in Section 4.3 and the other  benefits
described  in Section 4.4 shall be absolute and  unconditional  and shall not be
affected by any  circumstances,  including,  without  limitation,  any  set-off,
counterclaim,  defense or other right which the Corporation may have against any
Participant.  In no  event  shall a  Participant  be  obligated  to  seek  other
employment or take any other action by way of mitigation of the amounts  payable
to a Participant  under any of the provisions of this Plan, nor shall the amount
of any payment hereunder be reduced by any compensation  earned by a Participant
as a result of employment by another employer,  except as specifically  provided
in Section 4.3(c)(i).


                             ARTICLE V
                     SUCCESSOR TO CORPORATION

      This Plan shall bind any successor of AEP or the Corporation, their assets
or  their  businesses  (whether  direct  or  indirect,   by  purchase,   merger,
consolidation  or  otherwise) in the same manner and to the same extent that AEP
or the Corporation would be obligated under this Plan if no succession had taken
place.

      In the case of any  transaction  in  which a  successor  would  not by the
foregoing  provision or by  operation  of law be bound by this Plan,  AEP or the
Corporation shall require such successor expressly and unconditionally to assume
and agree to perform AEP's or the Corporation's  obligations under this Plan, in
the same  manner and to the same  extent  that AEP or the  Corporation  would be
required  to  perform  if  no  such   succession  had  taken  place.   The  term
"Corporation,"  as used in this Plan, shall mean the Corporation as hereinbefore
defined and any  successor or assignee to the business of assets which by reason
hereof becomes bound by this Plan.

                            ARTICLE VI
                DURATION, AMENDMENT AND TERMINATION

      6.1 Duration. This Plan shall terminate on the date the closing conditions
set forth in  Article  VII of the Merger  Agreement  are not met or the date the
Merger Agreement is terminated  pursuant to Article IX of the Merger  Agreement,
unless it is extended for an additional period or periods by resolution  adopted
by the Board.  If the  Combination  occurs,  this Plan shall terminate two years
after the closing date of the Combination.

      6.2  Amendment.  Except as provided in Section  6.1, the Plan shall not be
subject to amendment, change, substitution,  deletion, revocation or termination
in any respect which adversely affects the rights of Participants.

      6.3 Form of  Amendment.  The form of any  amendment of the Plan shall be a
written  instrument  signed by a duly  authorized  officer  of the  Corporation,
certifying that the amendment has been approved by the Board.


                            ARTICLE VII
                           MISCELLANEOUS

      7.1  Indemnification.  If a Participant  institutes any  reasonable  legal
action  in  seeking  to  obtain  or  enforce  or is  required  to  defend in any
reasonable legal action the validity or enforceability  of, any right or benefit
provided by this Plan,  the  Corporation  will pay for all actual and reasonable
legal fees and expenses incurred (as incurred) by such  Participant,  regardless
of the outcome of such action.

      7.2  Employment  Status.  This  Plan does not  constitute  a  contract  of
employment or impose on the  Participant  or the  Corporation  any obligation to
retain the Participant as an employee, to change the status of the Participant's
employment, or to change the Corporation's policies regarding the termination of
employment.

      7.3 Claim Procedure.  If a Participant  makes a written request alleging a
right to  receive  benefits  under  this Plan or  alleging a right to receive an
adjustment in benefits being paid under the Plan, the Corporation shall treat it
as a claim for benefit.  All claims for benefit  under the Plan shall be sent to
the Human Resources Department of the Corporation and must be received within 30
days  after the Date of  Termination.  If the  Corporation  determines  that any
individual who has claimed a right to receive benefits,  or different  benefits,
under  the Plan is not  entitled  to  receive  all or any  part of the  benefits
claimed,  it will inform the  claimant in writing of its  determination  and the
reasons  therefor in terms  calculated to be  understood  by the  claimant.  The
notice  will  be  sent  within  90  days of the  claim  unless  the  Corporation
determines  additional time, not exceeding 90 days, is needed.  The notice shall
make specific  reference to the pertinent Plan provisions on which the denial is
based, and describe any additional  material or information,  if any,  necessary
for the claimant to perfect the claim and the reason any such addition  material
or information is necessary. Such notice shall, in addition, inform the claimant
what  procedure  the  claimant  should  follow to take  advantage  of the review
procedures  set forth  below in the event the  claimant  desires to contest  the
denial of the  claim.  The  claimant  may  within 90 days  thereafter  submit in
writing to the Corporation a notice that the claimant contests the denial of the
claim by the  Corporation and desires a further  review.  The Corporation  shall
within 60 days thereafter  review the claim and authorize the claimant to appear
personally  and  review  pertinent  documents  and submit  issues  and  comments
relating to the claim to the persons responsible for making the determination on
behalf of the  Corporation.  The Corporation will render its final decision with
specific  reasons  therefore  in writing and will  transmit  it to the  claimant
within  60 days of the  written  request  for  review,  unless  the  Corporation
determines  additional  time, not exceeding 60 days, is needed,  and so notifies
the claimant. If the Corporation fails to respond to a claim filed in accordance
with the foregoing within 60 days or any such extended  period,  the Corporation
shall be deemed to have denied the claim.

      7.4 Validity and Severability.  The invalidity or  unenforceability of any
provision  of the Plan shall not affect the  validity or  enforceability  of any
other  provision of the Plan,  which shall remain in full force and effect,  and
any prohibition or  unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

      7.5  Governing  Law.  The  validity,   interpretation,   construction  and
performance  of the Plan shall in all  respects  be governed by the law of Ohio,
without  reference to  principles  of  conflicts  of laws,  except to the extent
pre-empted by federal law.


                            SCHEDULE 1

        PARTICIPANTS IN THE AMERICAN ELECTRIC POWER SYSTEM
                  SENIOR EXECUTIVE SEVERANCE PLAN