Registration No. 333-100623

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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                              ---------------------
                          PRE-EFFECTIVE AMENDMENT NO. 1
                                       TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

                       Public Service Company of Oklahoma
             (Exact name of registrant as specified in its charter)

Oklahoma                                                     73-0410895
(State or other jurisdiction                           (I.R.S. Employer
of incorporation or organization)                    Identification No.)


1 Riverside Plaza
Columbus, Ohio                                                  43215
(Address of principal executive offices)                    (Zip Code)

      Registrant's telephone number, including area code: (614) 223-1000

                           ARMANDO A. PENA, Treasurer
           JEFFREY D. CROSS, Senior Vice President and General Counsel
                   AMERICAN ELECTRIC POWER SERVICE CORPORATION
                                1 Riverside Plaza
                              Columbus, Ohio 43215
          (614) 223-1580 (Name, address and telephone number, including
                        area code, of agent for service)

       It is respectfully requested that the Commission send copies of all
                     notices, orders and communications to:

Simpson Thacher & Bartlett                      Dewey Ballantine LLP
425 Lexington Avenue                            1301 Avenue of the Americas
New York, NY 10017-3909                         New York, NY 10019-6092
Attention:  James M. Cotter                     Attention: E. N. Ellis, IV

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

      Approximate date of commencement of proposed sale to the public: As soon
as practicable after the effective date of the Registration Statement.

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

      If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]
      If any of the securities being registered on this Form are to be offered
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act
of 1933, other than securities offered only in connection with dividend or
interest reinvestment plans, please check the following box. [x]
      If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]
      If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
      If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

      The registrant hereby amends this registration statement on such date or
dates as may be necessary to delay its effective date until the registrant shall
file a further amendment which specifically states that this registration
statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until the registration statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

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

      The information in this prospectus is not complete and may be changed. We
may not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and is not soliciting an offer to buy these securities
in any state where the offer or sale is not permitted.

                SUBJECT TO COMPLETION, DATED NOVEMBER 14, 2002

                                   PROSPECTUS

                       PUBLIC SERVICE COMPANY OF OKLAHOMA
                                1 Riverside Plaza
                              Columbus, Ohio 43215
                                  614-223-1000

                                  $400,000,000
                                 UNSECURED NOTES
                                  TERMS OF SALE

      The following terms may apply to the $400,000,000 unsecured notes (the
"notes") that we may sell at one or more times. A pricing supplement or
prospectus supplement will include the final terms for each note. If we decide
to list upon issuance any note or notes on a securities exchange, a pricing
supplement or prospectus supplement will identify the exchange and state when we
expect trading could begin.

      - Mature 9 months to 50 years
      - Fixed or floating interest rate
      - Remarketing features
      - Certificate or book-entry form
      - Subject to redemption
      - Not convertible, amortized or subject to a sinking fund
      - Interest paid on fixed rate notes quarterly or semi-annually
      - Interest paid on floating rate notes monthly, quarterly, semi-annually,
        or annually
      - Issued in multiples of a minimum denomination

INVESTING IN THESE NOTES INVOLVES RISKS.  SEE THE SECTION ENTITLED "RISK
FACTORS" BEGINNING ON PAGE 2 FOR MORE INFORMATION.

The notes have not been approved or disapproved by the Securities and Exchange
Commission ("SEC") or any state securities commission, nor have these
organizations determined that this prospectus is accurate or complete. Any
representation to the contrary is a criminal offense.

              The date of this prospectus is ____________, 2002.


                                   THE COMPANY

      We generate, sell, purchase, transmit and distribute electric power. We
serve approximately 502,000 retail customers in eastern and southwestern
Oklahoma. We also sell and transmit power at wholesale to other electric
utilities, municipalities, electric cooperatives and non-utility entities
engaged in the wholesale power market. Our principal executive offices are
located at 1 Riverside Plaza, Columbus, Ohio 43215 (telephone number
614-223-1000). We are a subsidiary of American Electric Power Company, Inc., a
public utility holding company, and we are a part of the American Electric Power
integrated utility system. The executive offices of American Electric Power
Company, Inc. are located at 1 Riverside Plaza, Columbus, Ohio 43215 (telephone
number 614-223-1000).

                                  RISK FACTORS

                         RISKS RELATED TO OUR REGULATED
                        BUSINESS AND EVOLVING REGULATION

o     Our rates are subject to regulation by the state of Oklahoma and a federal
      agency whose regulatory paradigms and goals may not be consistent.

      We operate in, and are subject to the laws and regulations of, the state
of Oklahoma. We are currently a vertically integrated electric utility and most
of our revenue results from the sale of electricity to retail customers subject
to bundled rates that are approved by the applicable state utility commission
and, to a certain extent, the Federal Energy Regulatory Commission (the "FERC").
Oklahoma adopted an electric restructuring law, but enacted legislation in June
2001 delaying competition indefinitely.

      FERC has pursued several regulatory initiatives, such as the formation and
operation of new regional transmission organizations, or "RTOs", which have been
designed to generally facilitate competition in the energy sector. States have
questioned both the FERC's jurisdiction to pursue such initiatives and their
benefit, if any, to the ratepayers in their state. The Oklahoma State
Corporation Commission ("OSCC") generally has authority over the sale or other
transfer of control, of transmission assets to an RTO.

      Exposure to inconsistent state and Federal regulatory standards may limit
our ability to operate profitably. Further alteration of the regulatory
landscape in which we operate may harm our financial condition and results of
operations.

      In Oklahoma, fuel costs are recovered from retail customers based on
quarterly fuel factors. The fuel factors are changed quarterly based on
projected fuel costs and include provisions for recovery or refund of prior
months' over- and under-recoveries of actual fuel costs. The OSCC audits our
fuel costs annually. To the extent the OSCC does not permit us to recover fuel
costs under the procedures described above, our net income could be materially
reduced.

o     The different regional power markets in which we compete or will compete
      in the future have changing transmission regulatory structures, which
      could affect our performance in these regions.

      Our results are likely to be affected by differences in the market and
transmission regulatory structures in various regional power markets. Problems
or delays that may arise in the formation and operation of RTOs may restrict our
ability to sell power produced by our generating capacity to certain markets if
there is insufficient transmission capacity otherwise available. The rules
governing the various regional power markets may also change from time to time,
which could affect our costs or revenues. Because it remains unclear which
companies will be participating in the various regional power markets, or how
RTOs will develop or what regions they will cover, we are unable to assess fully
the impact that these power markets may have on our business.

      We are currently a member of the Southwest Power Pool ("SPP"). The SPP has
agreed to merge with the Midwest Independent Transmission System Operator
("MISO"), an independent operator of transmission assets in the Midwest. We
provided notice that we will withdraw from the SPP effective October 31, 2002.
This action was taken to provide us additional flexibility in deciding which RTO
we will ultimately join.

      Subsequent to this action, we have entered into a Memorandum Of
Understanding with MISO/SPP under conditions favorable to AEP. This agreement
also provides for a continuation of the services currently provided by the SPP
for us in the interim. Final decisions on this issue have not been made.

      Management is unable to predict the outcome of these transmission
regulatory actions and proceedings or their impact on the timing and operation
of RTOs, our transmission operations or future results of operations and cash
flows.

o     AEP's merger with CSW may ultimately be found to violate the Public
      Utility Holding Company Act of 1935 ("PUHCA").

      AEP acquired CSW in a merger completed on June 15, 2000. As a result of
the merger AEP acquired four additional domestic electric utility companies,
including us. On January 18, 2002, the U.S. Court of Appeals for the District of
Columbia ruled that the SEC's June 14, 2000 order approving the merger failed to
properly find that the merger meets the requirements of PUHCA and sent the case
back to the SEC for further review. Specifically, the Court told the SEC to
revisit its conclusion that the merger met PUHCA's requirement that the electric
utilities be "physically interconnected" and confined to a "single area or
region."

      We believe that the merger meets the requirements of PUHCA and expect the
matter to be resolved favorably. We intend to fully cooperate with the staff of
the SEC in supplementing the record, if necessary, to ensure the merger complies
with PUHCA. We can give no assurance, however, that: (i) the SEC or any
applicable court review will find that the merger complies with PUHCA, or (ii)
the SEC or any applicable court review will not impose material adverse
conditions on us in order to find that the merger complies with PUHCA. If the
merger were ultimately found to violate PUHCA, it may require AEP to take
remedial actions or divest assets, which may harm our results of operations or
financial condition.

                       RISKS RELATED TO OUR POWER TRADING
                            AND WHOLESALE BUSINESSES

o     We plan to significantly reduce the scope and scale of our power trading
      and marketing operations.

      In October 2002 AEP announced its plans to reduce the exposure to energy
trading markets of its subsidiaries that trade power (including us) and to
downsize the trading and wholesale marketing operations conducted on behalf of
such subsidiaries. It is expected that in the future our power trading and
marketing operations will be limited to risk management around our generation
assets and those of our regulated affiliates. Trading and marketing operations
that were not limited to risk management around such assets have contributed to
our wholesale revenues and earnings in the past. Management is unable to predict
the effect this downsizing of our trading operations will have on our future
results of operations and cash flows. The following risk factors appearing under
this subheading should be read in light of the announcements discussed in this
paragraph.

o     Our revenues and results of operations are subject to market risks that
      are beyond our control.

      We sell power from our generation facilities into the spot market or other
competitive power markets or on a contractual basis. We also enter into
contracts to purchase and sell electricity as part of our power marketing and
trading operations. With respect to such transactions, we are not guaranteed any
rate of return on our capital investments through regulated rates, and our
revenues and results of operations are likely to depend, in large part, upon
prevailing market prices for power in our regional markets and other competitive
markets. These market prices may fluctuate substantially over relatively short
periods of time. It is reasonable to expect that trading margins may erode as
markets mature and that there may be diminished opportunities for gain should
volatility decline. In addition, the FERC, which has jurisdiction over wholesale
power rates, as well as independent system operators that oversee some of these
markets, may impose price limitations, bidding rules and other mechanisms to
address some of the volatility in these markets. Fuel prices may also be
volatile, and the price we can obtain for power sales may not change at the same
rate as changes in fuel costs. These factors could reduce our margins and
therefore diminish our revenues and results of operations.

      Volatility in market prices for fuel and power may result from:

 - weather conditions;
 - seasonality;
 - power usage;
 - illiquid markets;
 - transmission or transportation constraints or inefficiencies;
 - availability of competitively priced alternative energy sources;
 - demand for energy commodities;
 - natural gas, crude oil and refined products, and coal production levels;
 - natural disasters, wars, embargoes and other catastrophic events; and
 - federal, state and foreign energy and environmental regulation and
   legislation.

o     Our power trading (including fuel procurement and power marketing) and
      risk management policies cannot eliminate the risk associated with these
      activities.

      Our power trading (including fuel procurement and power marketing)
activities expose us to risks of commodity price movements. We attempt to manage
our exposure through enforcement of established risk limits and risk management
procedures. These risk limits and risk management procedures may not always be
followed or may not work as planned and cannot eliminate the risks associated
with these activities. As a result, we cannot predict the impact that our power
trading and risk management decisions may have on our business, operating
results or financial position.

      We routinely have open trading positions in the market, within established
guidelines, resulting from the management of our trading portfolio. To the
extent open trading positions exist, fluctuating commodity prices can improve or
diminish our financial results and financial position.

      Our power trading and risk management activities, including our power
sales agreements with counterparties, rely on projections that depend heavily on
judgments and assumptions by management of factors such as the future market
prices and demand for power and other energy-related commodities. These factors
become more difficult to predict and the calculations become less reliable the
further into the future these estimates are made. Even when our policies and
procedures are followed and decisions are made based on these estimates, results
of operations may be diminished if the judgments and assumptions underlying
those calculations prove to be wrong or inaccurate.

o     Parties with whom we have contracts may fail to perform their obligations,
      which could harm our results of operations.

      We are exposed to the risk that counterparties that owe us money or power
will breach their obligations. Should the counterparties to these arrangements
fail to perform, we may be forced to enter into alternative hedging arrangements
or honor underlying commitments at then-current market prices that may exceed
our contractual prices, which would cause our financial results to be diminished
and we might incur losses. Although our estimates take into account the expected
probability of default by a counterparty, our actual exposure to a default by a
counterparty may be greater than the estimates predict if defaults by
counterparties exceed our estimates.

o     We rely on electric transmission facilities that we do not own or control.
      If these facilities do not provide us with adequate transmission capacity,
      we may not be able to deliver our wholesale electric power to the
      purchasers of our power.

      We depend on transmission facilities owned and operated by other
unaffiliated power companies to deliver the power we sell at wholesale. This
dependence exposes us to a variety of risks. If transmission is disrupted, or
transmission capacity is inadequate, we may not be able to sell and deliver our
wholesale power. If a region's power transmission infrastructure is inadequate,
our recovery of wholesale costs and profits may be limited. If restrictive
transmission price regulation is imposed, the transmission companies may not
have sufficient incentive to invest in expansion of transmission infrastructure.

      The FERC has issued electric transmission initiatives that require
electric transmission services to be offered unbundled from commodity sales.
Although these initiatives are designed to encourage wholesale market
transactions for electricity, access to transmission systems may in fact not be
available if transmission capacity is insufficient because of physical
constraints or because it is contractually unavailable. We also cannot predict
whether transmission facilities will be expanded in specific markets to
accommodate competitive access to those markets.

o     We do not fully hedge against price changes in commodities.

      As part of our power marketing and trading operations, we routinely enter
into contracts to purchase and sell electricity and to procure fuel. In
connection with these trading activities, we routinely enter into financial
contracts, including futures and options, over-the counter options, swaps and
other derivative contracts. These activities expose us to risks from price
movements. If the values of the financial contracts change in a manner we do not
anticipate, it could harm our financial position or reduce the financial
contribution of our trading operations.

      We manage our exposure by establishing risk limits and entering into
contracts to offset some of our positions (i.e., to hedge our exposure to
demand, market effects of weather and other changes in commodity prices).
However, we do not always hedge the entire exposure of our operations from
commodity price volatility. To the extent we do not hedge against commodity
price volatility, our results of operations and financial position may be
improved or diminished based upon our success in the market.

o     We are unable to predict the course, results or impact, if any, of current
      or future energy market investigations.

      In February 2002, the FERC issued an order directing its staff to conduct
a fact-finding investigation into whether any entity, including Enron Corp.,
manipulated short-term prices in electric energy or natural gas markets in the
West or otherwise exercised undue influence over wholesale prices in the West,
for the period January 1, 2000, forward. In April 2002, AEP furnished certain
information to the FERC in response to their related data request.

      Pursuant to the FERC's February order, on May 8, 2002, the FERC issued
further data requests, including requests for admissions, with respect to
certain trading strategies engaged in by Enron Corp. and, allegedly, traders of
other companies active in the wholesale electricity and ancillary services
markets in the West, particularly California, during the years 2000 and 2001.
This data request was issued to AEP as part of a group of over 100 entities
designated by the FERC as all sellers of wholesale electricity and/or ancillary
services to the California Independent System Operator and/or the California
Power Exchange.

      The May 8, 2002 FERC data request required senior management to conduct an
investigation into AEP's trading activities during 2000 and 2001 and to provide
an affidavit as to whether AEP engaged in certain trading practices that the
FERC characterized in the data request as being potentially manipulative. AEP's
senior management complied with the order and denied its involvement with those
trading practices.

      On May 21, 2002, the FERC issued a further data request with respect to
this matter to AEP and over 100 other market participants requesting information
for the years 2000 and 2001 concerning "wash", "round trip" or "sale/buy back"
trading in the Western System Coordinating Council ("WSCC"), which involves the
sale of an electricity product to another company together with a simultaneous
purchase of the same product at the same price (collectively, "wash sales").
Similarly, on May 22, 2002, the FERC issued an additional data request with
respect to this matter to AEP and other market participants requesting similar
information for the same period with respect to the sale of natural gas products
in the WSCC and Texas. After reviewing its records, AEP responded to the FERC
that it did not participate in any "wash sale" transactions involving power or
gas in the relevant market. AEP further informed the FERC that certain of its
traders did engage in trades on the Intercontinental Exchange, an electronic
electricity trading platform owned by a group of electricity trading companies,
including AEP, on September 21, 2001, the day on which all brokerage commissions
for trades on that exchange were donated to charities for the victims of the
September 11, 2001 terrorist attacks, which do not meet the FERC criteria for a
"wash sale" but do have certain characteristics in common with such sales.

      The Public Utilities Commission of Texas, which has jurisdiction over
several of our affiliates, also issued similar data requests to AEP and other
power marketers. AEP responded to such data request by the July 2, 2002 response
date. We understand that the SEC and US Commodity Futures Trading Commission
("CFTC") are also looking into "wash sale" trading practices. The CFTC issued a
subpoena to AEP on June 17, 2002 requesting information with respect to these
matters. AEP responded to CFTC. In addition, the US Department of Justice made a
civil investigation demand to AEP and other electric generating companies
concerning their investigation of the Intercontinental Exchange. In August 2002,
AEP received an informal data request from the SEC asking it to voluntarily
provide documents related to "round-trip" or "wash" trades and AEP has provided
the requested information to the SEC. AEP recently completed a review of its
trading activities in the United States for the last three years involving
sequential trades with the same terms and counterparties. The revenue from such
trading is not material to either our financial statements or AEP's. We believe
that substantially all these transactions involve economic substance and risk
transference and do not constitute "wash sales".

      Management is unable to predict the course or outcome of these or any
future energy market investigations or their impact, if any, on power commodity
trading generally or, more specifically, on our trading operations or future
results of operations and cash flows.

o     Diminished liquidity in the wholesale power markets could negatively
      impact our earnings

      The Enron Corp. bankruptcy and enhanced regulatory scrutiny have
contributed to more rigorous credit rating review of wholesale power market
participants. Credit downgrades and financial difficulties of certain other
market participants have significantly reduced such participants' participation
in the wholesale power markets. These events are causing a decrease in the
number of significant participants in the wholesale power markets, at least
temporarily, which could result in a decrease in the volume and liquidity in the
wholesale power markets. We are unable to predict the impact of such
developments on our power marketing and trading business.

o     Uncertainty regarding FERC proposed security standards

      In July 2002, the FERC published for comment its proposed security
standards as part of the Standards for Market Design ("SMD"). These standards
are intended to ensure all market participants have a basic security program
that effectively protects the electric grid and related market activities and
require compliance by January 1, 2004. The impact of these proposed standards is
far-reaching and has significant penalties for non-compliance. These standards
apply to marketers, transmission owners, and power producers, including us.
Compliance with these standards would represent a significant effort that will
impact us. Unless the cost of compliance can be recovered from customers,
results of operations and cash flows would be adversely affected.

o     Potential for disruption if the delay of a FERC market power mitigation
      order is lifted

      A FERC order on AEP's triennial market based wholesale power rate
authorization update required certain mitigation actions that certain AEP
subsidiaries, including us, would need to take for sales/purchases within its
control area and required AEP to post information on its website regarding its
power systems status. As a result of a request for rehearing filed by AEP and
other market participants, FERC issued an order delaying the effective date of
the mitigation plan until after a planned technical conference on market power
determination. No such conference has been held and management is unable to
predict the timing of any further action by the FERC or its affect on future
results of our operations and cash flows.

                RISKS RELATED TO MARKET OR ECONOMIC VOLATILITY

o     We are subject to risks associated with a changing economic environment.

      In response to the occurrence of several recent events, including the
September 11, 2001 terrorist attack on the United States, the ongoing war
against terrorism by the United States, and the bankruptcy of Enron Corp., the
financial markets have been disrupted in general, and the availability and cost
of capital for our business and that of our competitors has been at least
temporarily harmed. In addition, following the bankruptcy of Enron Corp., the
credit ratings agencies initiated a thorough review of the capital structure and
earnings power of energy companies, including us. These events could constrain
the capital available to our industry and could limit our access to funding for
our operations. Our business is capital intensive, and we are dependent upon our
ability to access capital at rates and on terms we determine to be attractive.
If our ability to access capital becomes significantly constrained, our interest
costs will likely increase and our financial condition could be harmed and
future results of operations could be significantly diminished.

      The insurance industry has also been disrupted by these events. As a
result, the availability of insurance covering risks we and our competitors
typically insure against may decrease. In addition, the insurance we are able to
obtain may have higher deductibles, higher premiums and more restrictive policy
terms.

o     A downgrade in our credit rating could negatively affect our ability to
      access capital and/or to operate our power trading businesses.

      Standard & Poor's and Moody's rate our senior, unsecured debt at BBB+ and
A2, respectively. If Moody's or Standard & Poor's were to downgrade our
long-term rating, particularly below investment grade, our borrowing costs would
increase, which would diminish our financial results. In addition, we would
likely be required to pay a higher interest rate in future financings, and our
potential pool of investors and funding sources could decrease. Further, if
AEP's short-term rating were to fall below P-2 or A-2, the current ratings
assigned by Standard & Poor's and Moody's, respectively, it would significantly
limit its access to the commercial paper market and would increase our
short-term borrowing costs because we conduct our short-term borrowing through
AEP, and on the same terms available to AEP.

      Our power trading business relies on the investment grade ratings of our
senior, unsecured debt. Most of our counterparties require the creditworthiness
of an investment grade entity to stand behind transactions. If our rating were
to decline below investment grade, our ability to profitably operate our power
trading business would be diminished because we would likely have to deposit
cash or cash related instruments, which would reduce our profits.

o     Our operating results may fluctuate on a seasonal and quarterly basis.

      Electric power generation is generally a seasonal business. In many parts
of the country, demand for power peaks during the hot summer months, with market
prices also peaking at that time. In other areas, power demand peaks during the
winter. As a result, our overall operating results in the future may fluctuate
substantially on a seasonal basis. The pattern of this fluctuation may change
depending on the terms of power sale contracts we enter into. In addition, we
have historically sold less power, and consequently earned less income, when
weather conditions are milder. We expect that unusually mild weather in the
future could diminish our results of operations and harm our financial
condition.

o     Changes in technology may significantly affect our business by making our
      power plants less competitive.

      A key element of our business model is that generating power at central
power plants achieves economies of scale and produces power at relatively low
cost. There are other technologies that produce power, most notably fuel cells,
microturbines, windmills and photovoltaic (solar) cells. It is possible that
advances in technology will reduce the cost of alternative methods of producing
power to a level that is competitive with that of most central power station
electric production. If this were to happen and if these technologies achieved
economies of scale, our market share could be eroded, and the value of our power
plants could be reduced. Changes in technology could also alter the channels
through which retail electric customers buy power, thereby harming our financial
results.

o     Changes in commodity prices may increase our cost of producing power or
      decrease the amount we receive from selling power, harming our financial
      performance.

      We are exposed to changes in the price and availability of coal and
natural gas because a significant portion of our generating capacity is
coal-fired with the remainder using natural gas as fuel. We have contracts of
varying durations for the supply of fuel for most of our existing generation
capacity, but as these contracts end, we may not be able to purchase fuel on
terms as favorable as the current contracts. Our exposure to such changes in
fuel costs is mitigated in part by our ability to recover fuel costs from
regulated customers pursuant to state and Federal fuel recovery provisions,
subject to applicable review by these regulatory bodies.

      Changes in the cost of fuel and changes in the relationship between such
cost and the market price of power will affect our financial results. Since the
price we obtain for power may not change at the same rate as the change in fuel
costs, we may be unable to pass on the changes in costs to our customers in the
future.

      Actual power prices and fuel costs will differ from those assumed in
financial projections used to initially value our trading and marketing
transactions, and those differences may be material. As a result, our financial
results may be diminished in the future as those transactions are marked to
market.

o     Demand for power could exceed our supply capacity.

      We are currently obligated to supply power to our regulated retail and
wholesale customers. At peak times, the demand for power required to meet this
obligation will exceed our available generation capacity. If current consumption
trends continue in the future, we may be required to buy more power on the
market or build additional generation. Either the market or regulators (through
rate recovery) may not permit us to pass all of these purchase or construction
costs on to our customers. To the extent regulators do not permit timely
recovery of the base rate portion of these costs, we have exposure to regulatory
lag associated with the time between the incurrence of costs of purchased or
constructed capacity and their recovery in customers' rates.

                   RISKS RELATED TO ENVIRONMENTAL REGULATION

o     Our costs of compliance with environmental laws are significant, and the
      cost of compliance with future environmental laws could harm our cash flow
      and profitability.

      Our operations are subject to extensive federal, state and local
environmental statutes, rules and regulations relating to air quality, water
quality, waste management, natural resources and health and safety. Compliance
with these legal requirements requires us to commit significant capital toward
environmental monitoring, installation of pollution control equipment, emission
fees and permits at all of our facilities. These expenditures have been
significant in the past and we expect that they will increase in the future.
Costs of compliance with environmental regulations could harm our industry, our
business and our results of operations and financial position, especially if
emission and/or discharge limits are tightened, more extensive permitting
requirements are imposed, additional substances become regulated and the number
and types of assets we operate increase.

o     Governmental authorities may assess penalties on us for failures to comply
      with environmental laws and regulations.

      If we fail to comply with environmental laws and regulations, even if
caused by factors beyond our control, that failure may result in the assessment
of civil or criminal penalties and fines against us. Recent lawsuits by the EPA
and various states filed against certain of our affiliate utility companies
highlight the environmental risks faced by generating facilities, in general,
and coal-fired generating facilities, in particular.

                             PROSPECTUS SUPPLEMENTS

      We may provide information to you about the notes in up to three separate
documents that progressively provide more detail: (a) this prospectus provides
general information some of which may not apply to your notes, (b) the
accompanying prospectus supplement provides more specific terms of your notes,
and (c) if not in the accompanying prospectus supplement, the pricing supplement
will provide the final terms of your notes. It is important for you to consider
the information contained in this prospectus, the prospectus supplement and any
pricing supplement in making your investment decision.

                       RATIO OF EARNINGS TO FIXED CHARGES

      The Ratio of Earnings to Fixed Charges for each of the periods indicated
is as follows:

    Twelve Months
    Period Ended               Ratio

    December 31, 1997          2.68
    December 31, 1998          4.20
    December 31, 1999          3.34
    December 31, 2000          3.31
    December 31, 2001          3.06
    September 30, 2002         2.93

      For current information on the Ratio of Earnings to Fixed Charges, please
see our most recent Form 10-K and Form 10-Q. See Where You Can Find More
Information.

                       WHERE YOU CAN FIND MORE INFORMATION

      This prospectus is part of a registration statement we filed with the SEC.
We also file annual, quarterly and special reports and other information with
the SEC. You may read and copy any document we file at the SEC's Public
Reference Room at 450 Fifth Street, N.W., Washington, D.C. 20549. Please call
the SEC at 1-800-SEC-0330 for further information on the Public Reference Room.
You may also examine our SEC filings through the SEC's web site at
http://www.sec.gov.

      The SEC allows us to "incorporate by reference" the information we file
with them, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
considered to be part of this prospectus, and later information that we file
with the SEC will automatically update and supersede this information. We
incorporate by reference the document listed below and any future filings made
with the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Securities
Exchange Act of 1934 until we sell all the notes.

      Annual Report on Form 10-K for the year ended December 31, 2001; and
Quarterly Reports on Form 10-Q for the quarters ended March 31, 2002, June 30,
2002 and September 30, 2002 and Current Report on Form 8-K dated November 18,
2002.

You may request a copy of these filings, at no cost, by writing or telephoning
us at the following address:

      Mr. R. Todd Rimmer
      American Electric Power Service Corporation
      1 Riverside Plaza
      Columbus, Ohio 43215
      614-223-1000

      You should rely only on the information incorporated by reference or
provided in this prospectus or any supplement. We have not authorized anyone
else to provide you with different information. We are not making an offer of
these notes in any state where the offer is not permitted. You should not assume
that the information in this prospectus or any supplement is accurate as of any
date other than the date on the front of those documents.

                                 USE OF PROCEEDS

      Unless otherwise stated in a prospectus supplement, the net proceeds from
the sale of the notes will be used for general corporate purposes relating to
our utility business. These purposes include redeeming or repurchasing
outstanding debt or preferred stock and replenishing working capital. If we do
not use the net proceeds immediately, we temporarily invest them in short-term,
interest-bearing obligations. We estimate that our construction costs in 2002
will approximate $80,580,000. At September 30, 2002, our outstanding short-term
debt was $228,638,000.

                            DESCRIPTION OF THE NOTES

General

      We will issue the notes under the Indenture dated November 1, 2000 (as
previously supplemented and amended) between us and the Trustee, The Bank of New
York. This prospectus briefly outlines some provisions of the Indenture. If you
would like more information on these provisions, you should review the Indenture
and any supplemental indentures that we have filed or will file with the SEC.
See Where You Can Find More Information on how to locate these documents. You
may also review these documents at the Trustee's offices at 5 Penn Plaza, New
York, New York.

      The Indenture does not limit the amount of notes that may be issued. The
Indenture permits us to issue notes in one or more series or tranches upon the
approval of our board of directors pursuant to any supplemental indentures. Each
series of notes may differ as to their terms.

      The notes are unsecured and will rank equally with all our unsecured
unsubordinated debt. Substantially all of our fixed properties and franchises
are subject to the lien of our first mortgage bonds issued under and secured by
a Mortgage and Deed of Trust, dated as of July 1, 1945 (as previously
supplemented and amended) between us and Liberty Bank and Trust Company of
Tulsa, National Association, successor to The First National Bank and Trust
Company of Tulsa, as trustee. For current information on our debt outstanding
see our most recent Form 10-K and Form 10-Q. See Where You Can Find More
Information.

      The notes will be denominated in U.S. dollars and we will pay principal
and interest in U.S. dollars. Unless an applicable pricing or prospectus
supplement states otherwise, the notes will not be subject to any conversion,
amortization, or sinking fund. We expect that the notes will be "book-entry,"
represented by a permanent global note registered in the name of The Depository
Trust Company, or its nominee. We reserve the right, however, to issue note
certificates registered in the name of the noteholders.

      In the discussion that follows, whenever we talk about paying principal on
the notes, we mean at maturity or redemption. Also, in discussing the time for
notices and how the different interest rates are calculated, all times are New
York City time and all references to New York mean the City of New York, unless
otherwise noted.

      The following terms may apply to each note as specified in the applicable
pricing or prospectus supplement and the note.

Redemptions

      If we issue redeemable notes, we may redeem such notes at our option
unless an applicable pricing or prospectus supplement states otherwise. The
pricing or prospectus supplement will state the terms of redemption. We may
redeem notes in whole or in part by delivering written notice to the noteholders
no more than 60, and not less than 30, days prior to redemption. If we do not
redeem all the notes of a series at one time, the Trustee selects the notes to
be redeemed in a manner it determines to be fair.

Remarketed Notes

      If we issue notes with remarketing features, an applicable pricing or
prospectus supplement will describe the terms for the notes including: interest
rate, remarketing provisions, our right to redeem notes, the holders' right to
tender notes, and any other provisions.

Book-Entry Notes - Registration, Transfer, and Payment of Interest and
Principal

      Unless otherwise stated in a prospectus supplement, book-entry notes of a
series will be issued in the form of a global note that the Trustee will deposit
with The Depository Trust Company, New York, New York ("DTC"). This means that
we will not issue note certificates to each holder. One or more global notes
will be issued to DTC who will keep a computerized record of its participants
(for example, your broker) whose clients have purchased the notes. The
participant will then keep a record of its clients who purchased the notes.
Unless it is exchanged in whole or in part for a note certificate, a global note
may not be transferred; except that DTC, its nominees, and their successors may
transfer a global note as a whole to one another.

      Beneficial interests in global notes will be shown on, and transfers of
global notes will be made only through, records maintained by DTC and its
participants.

      DTC has provided us the following information: DTC is a limited-purpose
trust company organized under the New York Banking Law, a "banking organization"
within the meaning of the New York Banking Law, a member of the United States
Federal Reserve System, a "clearing corporation" within the meaning of the New
York Uniform Commercial Code and a "clearing agency" registered under the
provisions of Section 17A of the Securities Exchange Act of 1934. DTC holds
securities that its participants ("Direct Participants") deposit with DTC. DTC
also records the settlement among Direct Participants of securities
transactions, such as transfers and pledges, in deposited securities through
computerized records for Direct Participants' accounts. This eliminates the need
to exchange note certificates. Direct Participants include securities brokers
and dealers, banks, trust companies, clearing corporations and certain other
organizations.

      Other organizations such as securities brokers and dealers, banks and
trust companies that work through a Direct Participant also use DTC's book-entry
system. The rules that apply to DTC and its participants are on file with the
SEC.

      A number of its Direct Participants and the New York Stock Exchange,
Inc., The American Stock Exchange, Inc. and the National Association of
Securities Dealers, Inc. own DTC.

      We will wire principal and interest payments to DTC's nominee. We and the
Trustee will treat DTC's nominee as the owner of the global notes for all
purposes. Accordingly, we, the Trustee and any paying agent will have no direct
responsibility or liability to pay amounts due on the global notes to owners of
beneficial interests in the global notes.

      It is DTC's current practice, upon receipt of any payment of principal or
interest, to credit Direct Participants' accounts on the payment date according
to their respective holdings of beneficial interests in the global notes as
shown on DTC's records. In addition, it is DTC's current practice to assign any
consenting or voting rights to Direct Participants whose accounts are credited
with notes on a record date. The customary practices between the participants
and owners of beneficial interests will govern payments by participants to
owners of beneficial interests in the global notes and voting by participants,
as is the case with notes held for the account of customers registered in
"street name." However, payments will be the responsibility of the participants
and not of DTC, the Trustee or us.

      According to DTC, the foregoing information with respect to DTC has been
provided to the Direct Participants and other members of the financial community
for informational purposes only and is not intended to serve as a
representation, warranty or contract modification of any kind.

      Notes represented by a global note will be exchangeable for note
certificates with the same terms in authorized denominations only if:

  -   DTC notifies us that it is unwilling or unable to continue as depositary
      or if DTC ceases to be a clearing agency registered under applicable law
      and a successor depositary is not appointed by us within 90 days; or

  -   we determine not to require all of the notes of a series to be
      represented by a global note and notify the Trustee of our decision.

Note Certificates-Registration, Transfer, and Payment of Interest and
Principal

      If we issue note certificates, they will be registered in the name of the
noteholder. The notes may be transferred or exchanged, pursuant to
administrative procedures in the indenture, without the payment of any service
charge (other than any tax or other governmental charge) by contacting the
paying agent. Payments on note certificates will be made by check.

Interest Rate

      The interest rate on the notes will either be fixed or floating. The
interest paid will include interest accrued to, but excluding, the date of
maturity or redemption. Interest is generally payable to the person in whose
name the note is registered at the close of business on the record date before
each interest payment date. Interest payable at maturity or redemption, however,
will be payable to the person to whom principal is payable.

      If we issue a note after a record date but on or prior to the related
interest payment date, we will pay the first interest payment on the interest
payment date after the next record date. We will pay interest payments by check
or wire transfer, at our option.

      Fixed Rate Notes

      A pricing or prospectus supplement will designate the record dates,
payment dates and the fixed rate of interest payable on a note. We will pay
interest quarterly or semi-annually, and upon maturity or redemption. Unless an
applicable pricing or prospectus supplement states otherwise, if any payment
date falls on a day that is not a business day, we will pay interest on the next
business day and no additional interest will be paid. Interest payments will be
the amount of interest accrued to, but excluding, each payment date. Interest
will be computed using a 360-day year of twelve 30-day months.

      Floating Rate Notes

      Each floating rate note will have an interest rate formula. The applicable
pricing supplement will state the initial interest rate or interest rate formula
on each note effective until the first interest reset date. The applicable
pricing or prospectus supplement will state the method and dates on which the
interest rate will be determined, reset and paid.

Events of Default

      "Event of Default" means any of the following:

   -  failure to pay the principal of (or premium, if any, on) any note of a
      series for three days after payment is due;

   -  failure to pay any interest on any note of any series for 30 days after
      payment is due;

   -  failure to perform any other requirements in such notes, or in the
      Indenture in regard to such notes, for 90 days after notice;

   -  failure to pay any sinking fund installment for three days after payment
      is due;

   -  certain events of bankruptcy or insolvency; or

   -  any other event of default specified in a series of notes.

      An Event of Default for a particular series of notes does not necessarily
mean that an Event of Default has occurred for any other series of notes issued
under the Indenture. If an Event of Default occurs and continues, the Trustee or
the holders of at least 33% of the principal amount of the notes of the series
affected may require us to repay the entire principal of the notes of such
series within ten days after the date of such notice ("Repayment Acceleration").
In most instances, the holders of at least a majority in aggregate principal
amount of the notes of the affected series may rescind a previously triggered
Repayment Acceleration if we have first cured our default by depositing with the
Trustee enough money to pay all (unaccelerated) past due amounts and penalties,
if any.

      The Trustee must within 90 days after a default occurs, notify the holders
of the notes of the series of default unless such default has been cured or
waived. We are required to file an annual certificate with the Trustee, signed
by an officer, concerning any default by us under any provisions of the
Indenture.

      Subject to the provisions of the Indenture relating to its duties in case
of default, the Trustee shall be under no obligation to exercise any of its
rights or powers under the Indenture at the request, order or direction of any
holders unless such holders offer the Trustee reasonable indemnity. Subject to
the provisions for indemnification, the holders of a majority in principal
amount of the notes of any series may direct the time, method and place of
conducting any proceedings for any remedy available to, or exercising any trust
or power conferred on, the Trustee with respect to such notes.

Modification of Indenture

      Under the Indenture, our rights and obligations and the rights of the
holders of any notes may be changed. Any change affecting the rights of the
holders of any series of notes requires the consent of the holders of not less
than a majority in aggregate principal amount of the outstanding notes of all
series affected by the change, voting as one class. However, we cannot change
the terms of payment of principal or interest, or a reduction in the percentage
required for changes or a waiver of default, unless the holder consents. We may
issue additional series of notes and take other action that does not affect the
rights of holders of any series by executing supplemental indentures without the
consent of any noteholders.

Consolidation, Merger or Sale

      We may merge or consolidate with any entity or sell our assets
substantially as an entirety as long as the successor or purchaser expressly
assumes the payment of principal, and premium, if any, and interest on the
notes.

Legal Defeasance

      We will be discharged from our obligations on the notes of any series on
the 91st day after the date of the deposit referred to in the first item below
if, among other things:

  -   we deposit with the Trustee sufficient cash or government securities to
      pay (i) the principal, interest, any premium and any other sums due to the
      stated maturity date or a redemption date of the note of the series and
      (ii) any applicable mandatory sinking fund payments on the day such
      payments are due;

  -   we deliver to the Trustee an opinion of counsel to the effect that such
      provision would not cause any outstanding notes then listed on a national
      security exchange to be delisted; and

  -   we deliver to the Trustee an opinion of counsel stating that the federal
      income tax obligations of noteholders of that series will not change as a
      result of our performing the action described above.

      If this happens, the noteholders of the series will not be entitled to
the benefits of the Indenture except for registration of transfer and
exchange of notes and replacement of lost, stolen or mutilated notes.
Covenant Defeasance

      We will be discharged from our obligations under certain restrictive
covenants applicable to the notes of a particular series if, among other things,
we perform all of the actions described above. See Legal Defeasance. If this
happens, any later breach of that particular restrictive covenant will not
result in Repayment Acceleration. If we cause an Event of Default apart from
breaching that restrictive covenant, there may not be sufficient money or
government obligations on deposit with the Trustee to pay all amounts due on the
notes of that series. In that instance, we would remain liable for such amounts.

Governing Law

      The Indenture and notes of all series will be governed by the laws of the
State of New York.

Concerning the Trustee

      We and our affiliates use or will use some of the banking services of the
Trustee and other services of its affiliates in the normal course of business.

                              PLAN OF DISTRIBUTION

      We may sell the notes (a) through agents; (b) through underwriters or
dealers; or (c) directly to one or more purchasers.

By Agents

      Notes may be sold on a continuing basis through agents designated by us.
The agents will agree to use their reasonable efforts to solicit purchases for
the period of their appointment.

      The Agents will not be obligated to make a market in the notes. We cannot
predict the amount of trading or liquidity of the notes.

By Underwriters

      If underwriters are used in the sale, the underwriters will acquire the
notes for their own account. The underwriters may resell the notes in one or
more transactions, including negotiated transactions, at a fixed public offering
price or at varying prices determined at the time of sale. The obligations of
the underwriters to purchase the notes will be subject to certain conditions.
The underwriters will be obligated to purchase all the notes of the series
offered if any of the notes are purchased. Any initial public offering price and
any discounts or concessions allowed or re-allowed or paid to dealers may be
changed from time to time.

Direct Sales

      We may also sell notes directly. In this case, no underwriters or agents
would be involved.

General Information

      Underwriters, dealers, and agents that participate in the distribution of
the notes may be underwriters as defined in the Securities Act of 1933 (the
"Act"), and any discounts or commissions received by them from us and any profit
on the resale of the notes by them may be treated as underwriting discounts and
commissions under the Act.

      We may have agreements with the underwriters, dealers and agents to
indemnify them against certain civil liabilities, including liabilities under
the Act.

      Underwriters, dealers and agents may engage in transactions with, or
perform services for, us or our affiliates in the ordinary course of their
businesses.

                                 LEGAL OPINIONS

      Our counsel, Simpson Thacher & Bartlett, New York, NY, and one of our
lawyers will each issue an opinion about the legality of the notes for us. Dewey
Ballantine LLP, New York, NY will issue an opinion for the agents or
underwriters. From time to time, Dewey Ballantine LLP acts as counsel to our
affiliates for some matters.

                                     EXPERTS

      The consolidated financial statements and the related consolidated
financial statement schedule as of December 31, 2001 and 2000 and for the years
then ended incorporated by reference in this prospectus have been audited by
Deloitte & Touche LLP, independent auditors, as stated in their reports, which
are incorporated by reference herein, and have been so incorporated in reliance
upon the reports of such firm given upon their authority as experts in
accounting and auditing.

      In connection with the audit by Arthur Andersen LLP ("Andersen") of our
consolidated financial statements for the year ended December 31, 1999
incorporated by reference in this prospectus, there were no disagreements
between Andersen and us on any matter of accounting principles or practices,
financial statement disclosure, or auditing scope or procedure, which
disagreements if not resolved to the satisfaction of Andersen would have caused
them to make reference thereto in their report on the financial statements for
such year.

      We have not been able to obtain, after reasonable efforts, a consent from
Andersen to the inclusion of its report in this prospectus, and we have
dispensed with the requirement to file their consent in reliance upon Rule 437a
of the Securities Act. Because Andersen has not consented to the inclusion of
its report in this prospectus, you will not be able to recover against Andersen
under Section 11 of the Securities Act for any untrue statements of a material
fact contained in the financial statements audited by Andersen or any omissions
to state a material fact required to be stated therein.



               Table of Contents


THE COMPANY...................  2
RISK FACTORS..................  2
PROSPECTUS SUPPLEMENTS........ 11
RATIO OF EARNINGS TO
   FIXED CHARGES.............. 11
WHERE YOU CAN FIND MORE
   INFORMATION ............... 11         $400,000,000 UNSECURED NOTES
USE OF PROCEEDS .............. 13
DESCRIPTION OF THE NOTES ..... 13
   General  .................. 13
   Redemptions ............... 14
   Remarketed Notes........... 14
   Book-Entry Notes -
   Registration,                                   PROSPECTUS
    Transfer, and  Payment of
    Interest and  Principal .. 14
   Note Certificates -
    Registration,
    Transfer, and Payment of                    The date of this
    Interest and Principal.... 16       Prospectus is ________ __, 2002
   Interest Rate ............. 16
    Fixed Rate Notes ......... 16
    Floating Rate Notes ...... 16
   Events of Default.......... 16
   Modification of Indenture.. 17
   Consolidation, Merger
    or Sale................... 18
   Legal Defeasance........... 18
   Covenant Defeasance........ 18
   Governing Law.............. 18
   Concerning the Trustee..... 19
PLAN OF DISTRIBUTION.......... 19
   By Agents.................. 19
   By Underwriters............ 19
   Direct Sales............... 19
   General Information........ 19
LEGAL OPINIONS................ 20
EXPERTS....................... 20



                               PART II

               INFORMATION NOT REQUIRED IN PROSPECTUS


Item 14.   Other Expenses of Issuance and Distribution.*

           Estimation based upon the issuance of all of the unsecured notes in
two issuances:

Securities and Exchange Commission Filing Fees...........$    28,152
Printing Registration Statement, Prospectus, etc.........     60,000
Independent Auditors' fees...............................     50,000
Charges of Trustee (including counsel fees)..............     45,000
Legal fees...............................................    160,000
Rating Agency fees.......................................    199,000
Miscellaneous expenses...................................     60,000
                                                            --------
     Total...............................................$   602,152
                                                         ===========

*     Estimated, except for filing fees.


Item 15.   Indemnification of Directors and Officers.

      The Bylaws of the Company provide that the Company shall indemnify each
person who is, was or has agreed to become a director or officer of the Company,
or who has agreed to serve as a director, officer, employee or agent of the
Company (or any other person or entity) at the request of the Board of Directors
against all loss, liability and expenses to the fullest extent permitted by the
Oklahoma General Corporation Act. Notwithstanding the foregoing, no person shall
be indemnified for amounts paid in settlement unless the terms and conditions of
such settlement have been consented to by the Company, and no indemnification
for employees or agents shall be made without the express authorization of the
Board of Directors.

      Section 1031 of the Oklahoma General Corporation Act provides that an
Oklahoma corporation may indemnify any persons, including officers and
directors, who are, or are threatened to be made, parties to any threatened,
pending or completed legal action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of such
corporation), by reason of the fact that such person was an officer or director
of such corporation, or is or was serving at the request of such corporation as
a director, officer, employee or agent of another corporation or enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines and
amounts paid in settlement actually and reasonably incurred by such person in
connection with such action, suit or proceeding, provided such officer or
director acted in good faith and in a manner he reasonably believed to be in or
not opposed to the corporation's best interests and, for criminal proceedings,
had no reasonable cause to believe that his conduct was illegal. An Oklahoma
corporation may indemnify officers and directors and in an action by or in the
right of the corporation under the same conditions, except that no
indemnification is permitted without judicial approval if the officer or
director is adjudged to be liable to the corporation. Where an officer or
director is successful on the merits or otherwise in the defense of any action
referred to above, the corporation must indemnify him against the expenses which
such officer or director actually and reasonably incurred.

      The above is a general summary of certain provisions of the Company's
Bylaws and the Oklahoma General Corporation Act and is subject in all respects
to the specific and detailed provisions of the Company's Bylaws and the Oklahoma
General Corporation Act.

      Reference is made to the Selling Agency Agreement and the Underwriting
Agreement filed as Exhibits 1(a) and 1(b) hereto, respectively, which provide
for indemnification of the Company, certain of its directors and officers, and
persons who control the Company, under certain circumstances.

      The Company maintains insurance policies insuring its directors and
officers against certain obligations that may be incurred by them.

Item 16.   Exhibits.

      Reference is made to the information contained in the Exhibit Index filed
as part of this Registration Statement.

Item 17.   Undertakings.

      The undersigned registrant hereby undertakes:

      (1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this registration statement:

           (i) To include any prospectus required by section 10(a)(3) of the
      Securities Act of 1933;

           (ii) To reflect in the prospectus any facts or events arising after
      the effective date of the registration statement (or the most recent
      post-effective amendment thereof) which, individually or in the aggregate,
      represent a fundamental change in the information set forth in the
      registration statement. Notwithstanding the foregoing, any increase or
      decrease in volume of unsecured notes offered (if the total dollar value
      of unsecured notes offered would not exceed that which was registered) and
      any deviation from the low or high end of the estimated maximum offering
      range may be reflected in the form of prospectus filed with the Commission
      pursuant to Rule 424(b) of the Securities Act of 1933 if, in the
      aggregate, the changes in volume and price represent no more than a 20%
      change in the maximum aggregate offering price set forth in the
      "Calculation of Registration Fee" table in the effective registration
      statement;

           (iii) To include any material information with respect to the plan of
      distribution not previously disclosed in the registration statement or any
      material change to such information in the registration statement;

      Provided, however, that (i) and (ii) do not apply if the registration
statement is on Form S-3, Form S-8 or Form F-3, and the information required to
be included in a post-effective amendment by those paragraphs is contained in
periodic reports filed with or furnished to the Commission by the registrant
pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934
that are incorporated by reference in the registration statement.

      (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

      (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

      (4) That, for purposes of determining any liability under the Securities
Act of 1933, each filing of the registrant's annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is
incorporated by reference in this registration statement shall be deemed to be a
new registration statement relating to the unsecured notes offered, and the
offering thereof at that time shall be deemed to be the initial bona fide
offering thereof.

      (5) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the laws of the State of Delaware, the
registrant's bylaws, or otherwise, the registrant has been advised that in the
opinion of the SEC such indemnification is against public policy as expressed in
said Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the unsecured notes, the registrant will, unless in the opinion
of its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by
it is against public policy as expressed in said Act and will be governed by the
final adjudication of such issue.

      (6) For purposes of determining any liability under the Securities Act of
1933, the information omitted from the form of prospectus filed as part of this
registration statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the registrant pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act shall be deemed to be part of this registration
statement as of the time it was declared effective.

      (7) For the purpose of determining any liability under the Securities Act
of 1933, each post-effective amendment that contains a form of prospectus shall
be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable cause to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Columbus and State of Ohio, on the 19th day of
November, 2002.

                      PUBLIC SERVICE COMPANY OF OKLAHOMA

                      E. Linn Draper, Jr.*
                      Chairman of the Board and
                      Chief Executive Officer

      Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed below by the following persons in the
capacities and on the dates indicated.

          Signature                     Title                 Date

(i) Principal Executive
        Officer               Chairman of the Board
                               and Chief Executive
      E. Linn Draper, Jr.*              Officer        November 19, 2002

(ii) Principal Financial
        Officer:

    /s/ Susan Tomasky
      Susan Tomasky           Vice President           November 19, 2002

(iii) Principal Accounting
         Officer:

  /s/ J. M. Buonaiuto         Controller and Chief
      Joseph M. Buonaiuto     Accounting Officer       November 19, 2002

(iv)    A Majority of the Directors:

      E. Linn Draper, Jr.*
      H. W. Fayne*
      T. M. Hagan*
      A. A. Pena*
      Robert P. Powers*
      Thomas V. Shockley, III*
      Susan Tomasky                                    November 19, 2002

*By_/s/ Susan Tomasky__
(Susan Tomasky, Attorney-in-Fact)


                                  EXHIBIT INDEX

      Certain of the following exhibits, designated with an asterisk (*), were
previously filed under this file. Other exhibits, designated with an "x", are
filed herewith. The exhibits not so designated have heretofore been filed with
the Commission and, pursuant to 17 C.F.R. Sections 201.24 and 230.411, are
incorporated herein by reference to the documents indicated following the
descriptions of such exhibits.

Exhibit No.                                           Description

* 1(a)     -    Copy of proposed form of Selling Agency  Agreement for the
                unsecured notes.

* 1(b)     -    Copy of proposed  form of  Underwriting  Agreement for the
                unsecured notes.

* 4(a)     -    Copy of Indenture, dated as of November 1, 2000, between
                the Company and The Bank of New York, as Trustee.

*          -    4(b) - Copy of First Supplemental Indenture, dated November 1,
                2000, establishing certain terms of the Floating Rate Notes,
                Series A, Due 2002.

* 4(c)     -    Copy of proposed form of Second Supplemental Indenture
                for the unsecured notes.

* 5        -    Opinion  of  Simpson  Thacher &  Bartlett  with  respect to the
                unsecured notes.

 12        -    Statement re Computations of Ratios  [Quarterly  Report on Form
                10-Q of the Company for the quarter  ended June 30, 2002,  File
                No. 0-3436, Exhibit 12].

x23(a)     -    Consent of Deloitte & Touche LLP.

 23(b)     -    Consent  of  Simpson  Thacher  &  Bartlett   (included  in
                Exhibit 5 filed herewith).

*24        -    Powers of Attorney  and  resolutions  of the Board of Directors
                of the Company.

*25        -    Form  T-1 re  eligibility  of The  Bank  of New  York to act as
                Trustee under the Indenture.