CENTRAL ILLINOIS PUBLIC SERVICE CO
10-Q, 1999-11-15
ELECTRIC & OTHER SERVICES COMBINED
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 10-Q

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934

     For Quarterly Period Ended September 30, 1999

[ ]  TRANSITION  REPORT  PURSUANT  TO  SECTION 13 OR  15(d)  OF  THE  SECURITIES
     EXCHANGE ACT OF 1934

     For The Transition Period From                  to

                         Commission file number 1-3672.

                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
             (Exact name of registrant as specified in its charter)

            Illinois                                             37-0211380
(State or other jurisdiction of                               (I.R.S. Employer
incorporation or organization)                               Identification No.)


               607 East Adams Street, Springfield, Illinois 62739
              (Address of principal executive offices and Zip Code)


                         Registrant's telephone number,
                       including area code: (217) 523-3600


         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.


                              Yes   X.      No   .


Shares outstanding of each of registrant's classes of common stock as of October
  31, 1999:  Common  Stock,  no par value,  held by Ameren  Corporation  (parent
  company of Registrant) - 25,452,373


<PAGE>


                     Central Illinois Public Service Company

                                      Index

                                                                    Page No.

Part I       Financial Information (Unaudited)

             Management's Discussion and Analysis                       2

             Quantitative and Qualitative Disclosure
             About Market Risk                                          7

             Balance Sheet
             - September 30, 1999 and December 31, 1998                 9

             Statement of Income
             - Three months, Nine months, and 12 months ended
                September 30, 1999 and 1998                            10

             Statement of Cash Flows
             - Nine months ended September 30, 1999 and 1998           11

             Notes to Financial Statements                             12


Part II      Other Information                                         15


<PAGE>


2
                    PART I. FINANCIAL INFORMATION (UNAUDITED)

MANAGEMENT'S  DISCUSSION  AND  ANALYSIS OF  FINANCIAL  CONDITION  AND RESULTS OF
OPERATIONS

OVERVIEW

Central  Illinois  Public Service  Company  (AmerenCIPS or the  Registrant) is a
subsidiary of Ameren  Corporation  (Ameren),  a holding company registered under
the Public Utility Holding Company Act of 1935 (PUHCA).  In December 1997, Union
Electric Company  (AmerenUE) and CIPSCO  Incorporated  (CIPSCO) combined to form
Ameren,  with  AmerenUE and CIPSCO's  subsidiaries,  the  Registrant  and CIPSCO
Investment  Company (CIC),  becoming  wholly-owned  subsidiaries  of Ameren (the
Merger).

The following  discussion and analysis  should be read in  conjunction  with the
Notes  to  Financial  Statements  beginning  on page  12,  and the  Management's
Discussion and Analysis of Financial Condition and Results of Operations (MD&A),
the Audited Financial Statements and the Notes to Financial Statements appearing
in the Registrant's 1998 Form 10-K.

RESULTS OF OPERATIONS

Earnings
Third  quarter  1999  earnings of $42 million  increased  $3 million from 1998's
third quarter  earnings.  Earnings for the nine months ended  September 30, 1999
increased $7 million from the year-ago  period to $75 million.  Earnings for the
12 months ended September 30, 1999 were $84 million, a $36 million increase from
the preceding  12-month period.  Excluding the extraordinary  charge recorded in
the fourth quarter of 1997 to write off the generation-related regulatory assets
and liabilities of the Registrant's  retail electric business,  earnings for the
12-month period ended September 30, 1998 were $72 million.

Earnings  fluctuated  due to many  conditions,  primarily:  weather  variations,
credits to electric  customers, electric  rate  reductions,  competitive  market
forces,  sales growth,  fluctuating  operating costs,  merger-related  expenses,
changes in interest expense,  changes in income and property taxes, a charge for
a targeted employee separation plan and an extraordinary charge, as noted above.

The  significant  items  affecting  revenues,  costs  and  earnings  during  the
three-month,  nine-month and 12-month  periods ended September 30, 1999 and 1998
are detailed below.

Electric Operations

Electric Operating Revenues      Variations for periods ended September 30, 1999
                                         from comparable prior-year periods
- -------------------------------------------------------------------------------
(Millions of Dollars)               Three Months   Nine Months   Twelve Months
- -------------------------------------------------------------------------------
Credit to customers                  $   (8)        $  (8)         $   (8)
Rate variations                          (2)           (8)            (13)
Effect of abnormal weather               (1)          (15)            (25)
Growth and other                          -             8               1
Interchange sales                        42            71              80
- -------------------------------------------------------------------------------
                                     $   31         $  48          $   35
- -------------------------------------------------------------------------------


Electric  revenues for the three months ended September 30, 1999,  increased $31
million  compared to the prior  three-  month  period  primarily  driven by an 8
percent increase in interchange  sales, due to strong  marketing  efforts.  This
increase was partially  offset by a  residential  rate decrease and an estimated
credit that the Registrant expects to pay its electric customers for the initial
period of a sharing mechanism  provided by deregulation  legislation (see Note 5
under Notes to Financial Statements for further information).

Electric  revenues for the nine months and 12 months ended  September  30, 1999,
increased $48 million and $35 million, respectively,  compared to the comparable
year-ago periods,  primarily due to increases in interchange sales of 33 percent
and 23 percent,  respectively,  due to strong marketing efforts. These increases
were partially offset by a decrease in native sales of 2 percent for each of the
nine-month and 12-month periods,  primarily due to milder weather.  In addition,
electric revenues were reduced as a result of a residential rate decrease and an
estimated credit

                                      -2-

<PAGE>

that the Registrant expects to pay its electric customers for the initial period
of a sharing mechanism provided by deregulation legislation (see Note 5 under to
Notes to Financial Statements for further information).

Fuel and Purchased Power
                                 Variations for periods ended September 30, 1999
                                         from comparable prior-year periods
- --------------------------------------------------------------------------------
(Millions of Dollars)                  Three Months  Nine Months  Twelve Months
- --------------------------------------------------------------------------------
Fuel:
  Variation in generation                $   -         $  8          $  (3)
  Price                                     (4)         (16)           (19)
  Generation efficiencies and other         (2)          (4)            (9)
Purchased power variation                   21           37             39
- --------------------------------------------------------------------------------
                                        $   15         $ 25          $   8
- --------------------------------------------------------------------------------


Fuel and  purchased  power costs for the three months ended  September  30, 1999
increased  $15  million  over the same period in the prior year  primarily  as a
result of an increase in purchased  power  resulting  from higher sales  volume,
partially  offset by lower fuel prices.  Fuel and purchased  power costs for the
nine months ended  September 30, 1999  increased $25 million over the comparable
prior year period primarily due to an increase in generation and purchased power
resulting from higher sales volume,  partially offset by lower fuel prices.  The
$8 million  increase in fuel and  purchased  power costs for the 12 months ended
September  30, 1999 versus the  prior-year  period was  primarily  the result of
increased  purchased power resulting from higher sales volume,  partially offset
by lower fuel prices.

Gas Operations
Gas revenues for the 12-month  period ended  September  30, 1999,  decreased $17
million compared to the same year-ago period primarily due to a decline in total
sales  resulting  primarily from milder winter weather,  partially  offset by an
Illinois gas rate increase effective February 1999.

Gas costs for the nine months ended  September  30,  1999,  decreased $3 million
compared to the year-ago period due to lower sales.  Gas costs for the 12 months
ended September 30, 1999,  decreased $22 million compared to the year-ago period
primarily due to lower sales and lower gas prices.

Other Operating Expenses
Other operating expense variations  reflected  recurring factors such as growth,
inflation, labor and benefit increases.

Other operations expenses increased $3 million and $7 million, respectively, for
the three months and nine months ended September 30, 1999,  compared to the same
year-ago periods primarily due to increased  injuries and damages expenses based
on claims experience,  and expenses associated with deregulation in Illinois and
the Year 2000 project, partially offset by the 1998 one-time pretax charge of $7
million for the targeted employee  separation plan and reduced workforce.  Other
operations  expenses increased $12 million for the 12 months ended September 30,
1999,  compared to the same  year-ago  period,  primarily  due to  increases  in
expenses  associated  with  deregulation  in Illinois and the Year 2000 project,
partially offset by the 1998 charge for the targeted separation plan.

Maintenance  expenses  for the three  months,  nine  months and 12 months  ended
September  30,  1999,  increased  $9  million,  $17  million  and  $11  million,
respectively,  from the comparable year-ago periods due to increased power plant
maintenance.

Other Taxes
Other taxes decreased  primarily due to a decrease in gross receipt taxes.  This
decrease  results  from the  restructuring  of the Illinois  public  utility tax
whereby gross receipt taxes are no longer recorded as electric revenue and gross
receipt tax expense.

Taxes
Income taxes for the three months, nine months and 12 months ended September 30,
1999, increased $2 million, $3 million and $8 million,  respectively,  primarily
due to higher pretax income.

                                      -3-

<PAGE>

Balance Sheet
The $17  increase in trade  accounts  receivable  and  unbilled  revenue was due
primarily to higher  revenues in August and September  1999 compared to November
and December 1998.

Changes in accounts and wages payable,  taxes accrued,  other accounts and notes
receivable,  and other  current  assets  resulted  from the  timing  of  various
payments  to taxing  authorities  and  suppliers.  The $91  million  increase in
intercompany  notes  payable is due to funds  borrowed from a utility money pool
(see Note 6 under Notes to Financial Statements for further information).

The $11 million  increase in other current  liabilities was primarily due to the
estimated credit to Illinois electric customers recorded in the third quarter of
1999 for the initial  period of a sharing  mechanism  provided  by  deregulation
legislation  (see  Note 5  under  Notes  to  Financial  Statements  for  further
information).  The  remaining  variance  is a result of the  timing  of  various
payments to suppliers.

LIQUIDITY AND CAPITAL RESOURCES

Cash provided by operating  activities  totaled $163 million for the nine months
ended September 30, 1999, compared to $98 million during the same 1998 period.

Cash flows used in investing  activities totaled $81 million and $46 million for
the nine months ended  September 30, 1999 and 1998,  respectively.  Construction
expenditures  for the nine months ended September 30, 1999, for constructing new
or improving existing facilities were $81 million.  Capital requirements for the
remainder of 1999 are expected to be principally for construction expenditures.

Cash flows used in financing  activities totaled $72 million for the nine months
ended  September 30, 1999,  compared to $67 million during the same 1998 period.
The  Registrant's  principal  financing  activities for the period  included the
redemption  of $107  million  of debt and the  payment of  dividends,  partially
offset by the issuance of intercompany notes payable.

The Registrant  plans to continue  utilizing  short-term  debt to support normal
operations and other temporary requirements. The Registrant is authorized by the
Securities  and  Exchange  Commission  under PUHCA to have up to $250 million of
short-term  unsecured debt instruments  outstanding at any one time.  Short-term
borrowings  consist of bank loans  (maturities  generally on an overnight basis)
and commercial paper  (maturities  generally within 10 to 45 days). At September
30, 1999,  the Registrant  had committed  bank lines of credit  aggregating  $30
million  (all of which  was  unused  and  available  at such  date)  which  make
available  interim  financing at various rates of interest  based on LIBOR,  the
bank  certificate  of  deposit  rate or other  options.  The lines of credit are
renewable  annually at various dates throughout the year. At September 30, 1999,
the Registrant had no outstanding  short-term  borrowings other than $91 million
of intercompany notes payable.

Also,  Ameren has a bank credit  agreement due 2002, which permits the borrowing
of up to $200 million on a short-term  basis. This credit agreement is available
to Ameren and its  subsidiaries,  including the Registrant.  As of September 30,
1999, $132 million was available for the Registrant's use.

The Registrant,  in the ordinary course of business,  explores  opportunities to
reduce its cost in order to remain  competitive in the marketplace.  Areas where
the Company focuses its review include,  but are not limited to, labor costs and
fuel  supply  costs.   In  the  labor  area,  the  Registrant  is  currently  in
negotiations with many of the Registrant's major collective  bargaining units in
an effort to manage its labor costs and practices effectively in the future. The
Registrant  also explores  alternatives  to  effectively  manage the size of its
workforce. These alternatives include utilizing hiring freezes,  outsourcing and
offering employee separation  packages.  In the fuel supply area, the Registrant
explores  alternatives  to  effectively  manage its overall  fuel  costs.  These
alternatives  include  diversifying  fuel  sources  for use at the  Registrant's
fossil plants (e.g.  utilizing  low sulfur versus high sulfur coal),  as well as
restructuring or terminating existing contracts with suppliers.

Certain of these reduction  alternatives could result in additional  investments
being made at the Registrant's  power plants in order to utilize different types
of coal, or could require nonrecurring  payments of employee separation benefits
or  nonrecurring  payments to restructure or terminate an existing fuel contract
with a supplier.  Management  is unable to predict  which (if any),  and to what
extent,  these  alternatives  to  reduce  its  overall  cost  structure  will be
executed,  as well as determine the impact of these actions on the  Registrant's
future financial position, results of operations or cash flows.

                                      -4-

<PAGE>

RATE MATTERS

In March 1999, the Registrant  filed delivery  service tariffs with the Illinois
Commerce  Commission  (ICC) to  comply  with the  requirements  of the  Electric
Service Customer Choice and Rate Relief Law of 1997. These tariffs would be used
by  electric  customers  who choose to purchase  their  power from an  alternate
supplier.  On August 25, 1999,  the ICC issued an order  approving  the delivery
services  tariffs,  with an  allowed  rate of return on  equity of  10.45%.  The
Registrant  and  AmerenUE  filed a joint  petition  for  rehearing of that order
requesting the ICC to alter its  conclusions  on a number of issues.  On October
13,  1999,  the ICC  granted a  rehearing  on certain  issues.  An order on this
reopened proceeding is expected in early 2000.

In August 1999,  Ameren filed a  transmission  system rate case with the Federal
Energy  Regulatory  Commission  (FERC).  This filing was  primarily  designed to
implement rates, terms and conditions for transmission  service for those retail
customers in Illinois  which choose other  suppliers.  On October 14, 1999,  the
FERC issued an order suspending the proposed rates until March 25, 2000.  Ameren
filed in response an emergency  request for rehearing  which  requested that the
portion of the filing which  related to retail access in Illinois be placed into
effect as of October 1, 1999 to coincide with the start of retail competition in
Illinois. An order from the FERC to this request is expected shortly. An initial
decision as to Ameren's overall filing is expected in early 2001.

See Note 5 under Notes to Financial  Statements  for further  discussion of Rate
Matters.

ELECTRIC INDUSTRY RESTRUCTURING

In December 1997, the Governor of Illinois signed the Electric  Service Customer
Choice and Rate  Relief Law of 1997 (the Law)  providing  for  electric  utility
restructuring  in Illinois.  This  legislation  introduces  competition into the
supply of electric energy in Illinois.

One of the major  provisions of the Law includes the phasing-in  through 2002 of
retail direct access,  which allows customers to choose their electric supplier.
The  phase-in  of retail  direct  access  began on October  1, 1999,  with large
commercial and industrial  customers  principally  comprising the initial group.
The  customers  in  this  group  represent   approximately  24  percent  of  the
Registrant's total sales.  Retail direct access will be offered to the remaining
commercial  and  industrial  customers on December 31, 2000,  and to residential
customers on May 1, 2002.

In conjunction with another provision of the Law, in July 1999, AmerenCIPS filed
a  notice  with the ICC  that it  intends  to  transfer  AmerenCIPS'  generating
facilities  (all in Illinois) to a new  unregulated  subsidiary  of Ameren.  The
formation  of  the  new  generating  subsidiary,  as  well  as the  transfer  of
AmerenCIPS' generating assets and liabilities (at historical net book value) and
certain  power  sales  contracts,  will be  subject to  regulatory  proceedings.
Regulatory  approval  was  received  from the ICC on  October  13,  1999.  Other
regulatory approvals are required from the Federal Energy Regulatory  Commission
and the  Missouri  Public  Service  Commission.  In addition  to the  AmerenCIPS
facilities,  the generating  subsidiary  will include  substantially  all of the
combustion  turbine  generators  which Ameren has committed to acquire.  The new
subsidiary  is  expected  to be  operational  sometime  in 2000,  subject to the
outcome of these regulatory proceedings.

Once the  transfer is  completed,  a power  supply  agreement  would be in place
between the new generating company and a nonregulated  marketing  subsidiary for
all generation.  The marketing  subsidiary  would have a power supply  agreement
with  AmerenCIPS  to supply  them  sufficient  generation  to meet  native  load
requirements  over the term of the agreement.  Power will continue to be jointly
dispatched between AmerenUE, AmerenCIPS and the new generating subsidiary.

The proposed  transfer of generating assets and liabilities had no effect on the
Registrant's financial statements as of September 30, 1999.

YEAR 2000 ISSUE

The Year  2000  Issue  relates  to how  dates are  stored  and used in  computer
systems,  applications, and embedded systems. As the century date change occurs,
certain date-sensitive systems need to be able to recognize the year as 2000 and
not as 1900. This inability to recognize and properly treat the year as 2000 may
cause these systems to process  critical  financial and operational  information
incorrectly.   The  Registrant's  primary  concern  is  the  potential  for  any
interruption in providing electric and gas service to customers,  as well as the
potential inability to process critical financial and operational information on
a timely basis, including billing its customers, if appropriate steps

                                      -5-

<PAGE>

are not taken to address this issue.  Management  has developed a Year 2000 plan
(Plan) covering Ameren,  including  AmerenCIPS,  and Ameren's Board of Directors
has been briefed about the Year 2000 Issue and how it may affect the Registrant.

Ameren's Plan to resolve the Year 2000 Issue involves three phases:  assessment,
planning,  and implementation/  testing.  Implementation of the Plan is directly
supervised  by each  area's  responsible  Vice  President.  A Year 2000  Project
Director  coordinates the  implementation of the Plan among functional teams who
are  addressing  issues  specific  to a  particular  area,  such as nuclear  and
non-nuclear generation facilities,  energy management systems, gas distribution,
etc. Ameren has also engaged certain outside consultants,  technicians and other
external resources to aid in formulating and implementing the Plan.

Ameren  has  completed  its   assessment   phase,   which   included   analyzing
date-sensitive  electronic hardware,  software applications and embedded systems
and has developed a compliance plan to address issues that were identified. Many
of the major  corporate  computer  systems  at  Ameren  are  relatively  new and
therefore are either Year 2000  compliant or only require  minor  modifications.
Also,   several  of  the  operating   hardware  and  embedded   systems   (i.e.,
microprocessor  chips) use analog  rather than digital  technology  and thus are
unaffected  by the  two-digit  date issue.  In  addition,  Ameren has  contacted
hundreds of vendors and suppliers to verify compliance.

Ameren has also completed its planning  phase.  Items that have been  identified
for remediation have been prioritized into groups based on their significance to
Ameren's operations.

The implementation/testing  phase for all mission critical systems was completed
by  September  30,  1999.  The   implementation/testing   phase  for  all  other
components/applications is approximately 98 percent complete as of September 30,
1999.

With  respect  to  third  parties,   for  areas  that  interface  directly  with
significant  vendors,  Ameren has inventoried vendors and major suppliers and is
currently  assessing  their Year 2000 readiness  through  surveys,  websites and
personal contact. Ameren plans to follow up with major suppliers and vendors and
verify Year 2000  compliance,  where  appropriate.  Ameren has also  queried its
health insurance  providers.  To date,  Ameren is not aware of any problems that
would  materially  impact its  financial  condition,  results of  operations  or
liquidity.  However, neither Ameren nor the Registrant has the means of ensuring
that these parties will be Year 2000  compliant.  The inability of those parties
to complete their Year 2000 resolution  process could  materially  impact Ameren
and the Registrant.

Ameren has also  addressed  the impact of electric  power grid problems that may
occur  outside  of its own  electric  system.  Ameren  has  conducted  Year 2000
electric  power grid impact  planning  through  the  system's  various  electric
interconnection  affiliations and is working with the  Mid-American  Interchange
Network (MAIN) and the North  American  Electric  Reliability  Council (NERC) to
plan  Year  2000  operational  preparedness  and  restoration  scenarios.  As of
September  30,  1999,  Ameren  has  completed  its  assessment,   planning,  and
implementation/testing  phases for mission critical items as identified by NERC.
As a result, Ameren has been added to the "Ready" list being compiled by NERC as
it assesses  readiness of the regional and national  electric grid.  Through the
Electric Power  Research  Institute  (EPRI),  an  industry-wide  effort has been
established  to deal with Year  2000  problems  affecting  digital  systems  and
equipment  used by the nation's  electric  power  companies.  Under this effort,
participating  utilities are working together to assess specific vendors' system
problems and test plans.  The assessment is being shared with EPRI  participants
to facilitate Year 2000 problem solving.

In addressing  the Year 2000 Issue,  Ameren will incur  internal  labor costs as
well as external  consulting  and other expenses to prepare for the new century.
Ameren estimates that its external costs (consulting fees and related costs) for
addressing the Year 2000 Issue will range from $10 million to $15 million. As of
September 30, 1999, Ameren had expended approximately $8 million. Ameren's plans
to complete Year 2000  modifications  are based on management's  best estimates,
which are derived utilizing numerous  assumptions of future events including the
continued availability of certain resources,  and other factors.  However, there
can be no guarantee  that these  estimates  will be achieved and actual  results
could differ materially from those plans. Specific factors that might cause such
material  differences include, but are not limited to, the availability and cost
of  personnel  trained in this area,  the  ability  to locate  and  correct  all
relevant computer codes, and similar uncertainties.

Ameren  believes  that,  with  appropriate  modifications  to existing  computer
systems/components,  updates by vendors and trading partners,  and conversion to
new  software and  hardware in the  ordinary  course of business,  the Year 2000
Issue  will  not  pose  significant  operational  problems  for the  Registrant.
However,  if such conversions are not completed in a proper and timely manner by
all  affected  parties,  the Year 2000 Issue could  result in  material  adverse
operational and financial  consequences  to the Registrant,  and there can be no
assurance that Ameren's efforts, or

                                      -6-

<PAGE>

those of vendors and trading partners,  interconnection affiliates, NERC or EPRI
to address the Year 2000 Issue will be  successful.  Ameren is in the process of
developing  contingency  plans to address  potential  risks,  including risks of
vendor/trading  partners  noncompliance,  as well as noncompliance of any of the
Registrant's material operating systems. The first operational  contingency plan
addressing  power grid issues was  completed  during the first  quarter of 1999.
Contingency  plans related to the business areas were completed in July 1999. At
this time, the Registrant is unable to predict the ultimate  impact,  if any, of
the  Year  2000  Issue  on the  Registrant's  financial  condition,  results  of
operations or liquidity; however, the impact could be material.

ACCOUNTING MATTERS

In June 1998, the Financial  Accounting  Standards Board (FASB) issued Statement
of  Financial  Accounting  Standards  (SFAS)  133,  "Accounting  for  Derivative
Instruments  and  Hedging  Activities."  SFAS  133  establishes  accounting  and
reporting  standards for derivative  instruments and for hedging  activities and
requires  recognition  of all  derivatives on the balance sheet measured at fair
value.  In June 1999,  the FASB  issued  SFAS 137,  "Accounting  for  Derivative
Instruments  and  Hedging  Activities--Deferral  of the  Effective  Date of FASB
Statement No. 133," which  delayed the effective  date of SFAS 133 to all fiscal
quarters of all fiscal years beginning after June 15, 2000. Earlier  application
is still  encouraged.  At this time,  the  Registrant is unable to determine the
impact of SFAS 133 on its  financial  position  or  results of  operations  upon
adoption;  however,  SFAS 133 could increase the volatility of the  Registrant's
future earnings.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk  represents the risk of changes in value of a financial  instrument,
derivative  or  non-derivative,  caused by  fluctuations  in interest  rates and
equity prices. The following discussion of Ameren's, including AmerenCIPS', risk
management activities includes  "forward-looking"  statements that involve risks
and  uncertainties.  Actual results could differ materially from those projected
in the "forward-looking"  statements.  Ameren handles market risks in accordance
with established  policies,  which may include entering into various  derivative
transactions. In the normal course of business, Ameren also faces risks that are
either non-financial or non-quantifiable.  Such risks principally include credit
risk and legal risk and are not represented in the following analysis.

Interest Rate Risk
The  Registrant  is exposed to market risk  through  changes in  interest  rates
through its  issuance  of both  long-term  and  short-term  variable-rate  debt,
fixed-rate  debt,  commercial  paper and auction  market  preferred  stock.  The
Registrant manages its interest rate exposure by controlling the amount of these
instruments it holds within its total capitalization portfolio and by monitoring
the effects of market changes in interest rates.

If  interest  rates  increase  1  percent  in  2000 as  compared  to  1999,  the
Registrant's  interest  expense would  increase and net income would decrease by
approximately $1 million.  This amount has been determined using the assumptions
that the  Registrant's  outstanding  variable  rate debt,  commercial  paper and
auction  market  preferred  stock as of  September  30,  1999,  continued  to be
outstanding  throughout  2000,  and that the  average  interest  rates for these
instruments  increased  1 percent  over 1999.  The model does not  consider  the
effects of the reduced  level of overall  economic  activity that would exist in
such an  environment.  In the event of a significant  change in interest  rates,
management  would likely take  actions to further  mitigate its exposure to this
market risk. However,  due to the uncertainty of the specific actions that would
be taken and their possible effects,  the sensitivity analysis assumes no change
in the Registrant's financial structure.

Commodity Price Risk
The  Registrant  is exposed to changes in market prices for natural gas and fuel
and  purchased  power.  With regard to its natural  gas  utility  business,  the
Registrant's  exposure to changing  market prices is in large part  mitigated by
the fact that the  Registrant  has a Purchased  Gas  Adjustment  Clause (PGA) in
place.  The PGA allows the  Registrant to pass on to its customers its prudently
incurred costs of natural gas.

Since  the  Registrant  does not  have a  provision  similar  to the PGA for its
electric operations, the Registrant has entered into several long-term contracts
with various  suppliers to purchase  coal to manage its exposure to fuel prices.
With regard to the Registrant's  exposure to commodity risk for purchased power,
Ameren  has  established  a  subsidiary,   AmerenEnergy,   Inc.,  whose  primary
responsibility  includes  managing  market  risks  associated  with the changing
market prices for purchased power for the Registrant.

AmerenEnergy  utilizes  several  techniques  to  mitigate  its  market  risk for
purchased  power,  including  utilizing  derivative  financial  instruments.   A
derivative  is a contract  whose value is dependent on or derived from the value
of

                                      -7-

<PAGE>

some underlying asset. The derivative financial instruments that AmerenEnergy is
allowed to utilize (which include forward  contracts and futures  contracts) are
dictated by a risk management policy,  which has been reviewed with the Auditing
Committee of Ameren's Board of Directors.  Compliance  with the risk  management
policy is the responsibility of a risk management steering committee, consisting
of Ameren officers and an independent risk management officer at AmerenEnergy.

As of September  30, 1999,  the fair value of derivative  financial  instruments
exposed to commodity price risk was immaterial.

SAFE HARBOR STATEMENT

Statements made in this Form 10-Q which are not based on historical  facts,  are
"forward-looking"  and, accordingly,  involve risks and uncertainties that could
cause actual results to differ  materially from those  discussed.  Although such
"forward-looking" statements  have  been  made in good  faith and are  based  on
reasonable assumptions,  there is no assurance that the expected results will be
achieved.  These statements include (without limitation) statements as to future
expectations,   beliefs,  plans,  strategies,  objectives,  events,  conditions,
financial  performance  and the Year 2000 Issue.  In  connection  with the "Safe
Harbor" provisions of the Private Securities  Litigation Reform Act of 1995, the
Registrant is providing this cautionary  statement to identify important factors
that could cause actual results to differ materially from those anticipated. The
following factors,  in addition to those discussed  elsewhere in this report and
in the Annual  Report on Form 10-K for the fiscal year ended  December 31, 1998,
and in subsequent  securities filings,  could cause results to differ materially
from management  expectations as suggested by such "forward-looking" statements:
the  effects  of  regulatory  actions;  changes  in laws and other  governmental
actions;  the impact on the  Registrant  of current  regulations  related to the
phasing-in of the  opportunity for some customers to choose  alternative  energy
suppliers in Illinois;  the effects of increased  competition  in the future due
to, among other  things,  deregulation  of certain  aspects of the  Registrant's
business at both the state and Federal levels; future market prices for fuel and
purchased power,  electricity,  and natural gas,  including the use of financial
instruments; average rates for electricity in the Midwest; business and economic
conditions;  interest rates;  weather conditions;  fuel prices and availability;
generation plant performance; the impact of current environmental regulations on
utilities  and  the  expectation  that  more  stringent   requirements  will  be
introduced over time, which could potentially have a negative  financial effect;
monetary and fiscal  policies;  future wages and employee  benefits  costs;  and
legal and administrative proceedings.

                                      -8-

<PAGE>





                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                                  BALANCE SHEET
                                    UNAUDITED
                      (Thousands of Dollars, Except Shares)

<TABLE>
<CAPTION>

                                                             September 30,   December 31,
ASSETS                                                            1999         1998
- ------                                                       -------------   ------------
<S>                                                          <C>           <C>
Property and plant, at original cost:
   Electric                                                     $2,400,383   $2,381,682
   Gas                                                             265,459      259,656
                                                                ----------   ----------
                                                                 2,665,842    2,641,338
   Less accumulated depreciation and amortization                1,246,472    1,192,108
                                                                ----------   ----------
                                                                 1,419,370    1,449,230
Construction work in progress                                       61,370       16,220
                                                                ----------   ----------
         Total property and plant, net                           1,480,740    1,465,450
                                                                ----------   ----------

Other assets                                                        29,526       31,904

Current assets:
   Cash and cash equivalents                                        21,351       10,180
   Accounts receivable - trade (less allowance for doubtful
         accounts of $2,593 and $1,714, respectively)               52,191       44,494
   Unbilled revenue                                                 62,397       53,120
   Other accounts and notes receivable                              41,797       16,486

   Materials and supplies, at average cost -
      Fossil fuel                                                   46,290       50,791
      Other                                                         35,181       36,047
   Other                                                            10,602        8,214
                                                                ----------   ----------
         Total current assets                                      269,809      219,332
                                                                ----------   ----------
Regulatory assets:
   Deferred income taxes                                            22,339       24,797
   Other                                                            19,214       22,914
                                                                ----------   ----------
         Total regulatory assets                                    41,553       47,711
                                                                ----------   ----------
Total Assets                                                    $1,821,628   $1,764,397
                                                                ==========   ==========

CAPITAL AND LIABILITIES
Capitalization:
   Common stock, no par value, authorized 45,000,000 shares -
     outstanding 25,452,373 shares                              $  120,033   $  120,033
   Retained earnings                                               477,525      455,337
                                                                ----------   ----------
         Total common stockholders' equity                         597,558      575,370
   Preferred stock not subject to mandatory redemption              80,000       80,000
   Long-term debt                                                  493,586      528,446
                                                                ----------   ----------
        Total capitalization                                     1,171,144    1,183,816
                                                                ----------   ----------
Current liabilities:
   Current maturity of long-term debt                               35,000       60,000
   Short-term debt                                                    --         46,700
   Intercompany notes payable                                       91,200         --
   Accounts and wages payable                                       88,743       61,609
   Accumulated deferred income taxes                                22,312       21,386
   Taxes accrued                                                    26,799       13,201
   Other                                                            45,200       34,454
                                                                ----------   ----------
         Total current liabilities                                 309,254      237,350
                                                                ----------   ----------
Accumulated deferred income taxes                                  222,174      234,119
Accumulated deferred investment tax credits                         32,794       34,657
Regulatory liability                                                35,409       39,621
Other deferred credits and liabilities                              50,853       34,834
                                                                ----------   ----------
Total Capital and Liabilities                                   $1,821,628   $1,764,397
                                                                ==========   ==========

</TABLE>

See Notes to Financial Statements.

                                      -9-

<PAGE>


                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                               STATEMENT OF INCOME
                                    UNAUDITED
                             (Thousands of Dollars)


<TABLE>
<CAPTION>


                                              Three Months Ended         Nine Months Ended        Twelve Months Ended
                                                  September 30,            September 30,              September 30,
                                             ----------------------    ----------------------    ----------------------
                                                1999         1998         1999         1998         1999         1998
                                                ----         ----         ----         ----         ----         ----

<S>                                       <C>          <C>          <C>          <C>          <C>          <C>
 OPERATING REVENUES:
    Electric                                $ 261,453    $ 230,422    $ 617,029    $ 568,866    $ 770,081    $ 734,692
    Gas                                        17,874       16,253       91,999       92,153      125,352      142,534
                                            ---------    ---------    ---------    ---------    ---------    ---------
 Total operating revenues                     279,327      246,675      709,028      661,019      895,433      877,226

 OPERATING EXPENSES:
    Operations
       Fuel and purchased power                82,072       66,965      208,304      183,143      255,246      246,763
       Gas                                      7,324        6,517       50,326       53,372       66,304       87,657
       Other                                   54,944       51,941      140,923      134,092      186,308      174,071
                                            ---------    ---------    ---------    ---------    ---------    ---------
                                              144,340      125,423      399,553      370,607      507,858      508,491
    Maintenance                                24,741       16,232       67,309       50,153       88,698       77,749
    Depreciation and amortization              20,141       17,357       60,330       54,791       79,862       75,233
    Income taxes                               26,204       24,484       43,380       40,113       49,036       40,970
    Other taxes                                10,056       12,556       29,921       44,571       42,184       58,668
                                            ---------    ---------    ---------    ---------    ---------    ---------
       Total operating expenses               225,482      196,052      600,493      560,235      767,638      761,111

 OPERATING INCOME                              53,845       50,623      108,535      100,784      127,795      116,115

 OTHER INCOME AND DEDUCTIONS:
    Allowance for equity funds used
       during construction                         (9)          (4)          (8)          45          (37)         447
    Miscellaneous, net                            533         (834)       1,614         (545)       1,204       (3,713)
                                            ---------    ---------    ---------    ---------    ---------    ---------
        Total other income and deductions         524         (838)       1,606         (500)       1,167       (3,266)

 INCOME BEFORE
    INTEREST CHARGES                           54,369       49,785      110,141      100,284      128,962      112,849

 INTEREST CHARGES:
    Interest                                   10,748       10,423       31,906       30,126       41,819       38,472
    Allowance for borrowed funds
       used during construction                   338         (310)         (43)        (981)        (143)      (1,283)
                                            ---------    ---------    ---------    ---------    ---------    ---------
    Net interest charges                       11,086       10,113       31,863       29,145       41,676       37,189

 INCOME BEFORE
    EXTRAORDINARY CHARGE                       43,283       39,672       78,278       71,139       87,286       75,660
                                            ---------    ---------    ---------    ---------    ---------    ---------

 EXTRAORDINARY CHARGE
   (NET OF INCOME TAXES)                         --           --           --           --           --        (24,853)
                                            ---------    ---------    ---------    ---------    ---------    ---------
NET INCOME                                     43,283       39,672       78,278       71,139       87,286       50,807

PREFERRED STOCK DIVIDENDS                         957          936        2,842        2,801        3,786        3,734
                                            ---------    ---------    ---------    ---------    ---------    ---------

NET INCOME AFTER PREFERRED
   STOCK DIVIDENDS                          $  42,326    $  38,736    $  75,436    $  68,338    $  83,500    $  47,073
                                            =========    =========    =========    =========    =========    =========

</TABLE>


See Notes to Financial Statements.

                                      -10-

<PAGE>

                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                             STATEMENT OF CASH FLOWS
                                    UNAUDITED
                             (Thousands of Dollars)

<TABLE>
<CAPTION>


                                                            Nine Months Ended
                                                             September 30,
                                                           1999         1998
<S>                                                  <C>          <C>
Cash Flows From Operating:
   Net income                                          $  78,278    $  71,139
   Adjustments to reconcile net income to net cash
      provided by operating activities:
        Depreciation and amortization                     60,330       54,791
        Allowance for funds used during construction         (35)      (1,026)
        Deferred income taxes, net                       (12,774)      (9,760)
        Deferred investment tax credits, net              (1,863)      (4,573)
        Changes in assets and liabilities:
           Receivables, net                              (42,285)     (36,417)
           Materials and supplies                          5,367       (6,942)
           Accounts and wages payable                     27,134      (13,590)
           Taxes accrued                                  13,598        9,186
           Other, net                                     35,741       35,163
                                                       ---------    ---------
Net cash provided by operating activities                163,491       97,971

Cash Flows From Investing:
   Construction expenditures                             (80,601)     (46,911)
   Allowance for funds used during construction               35        1,026
                                                       ---------    ---------
Net cash used in investing activities                    (80,566)     (45,885)

Cash Flows From Financing:
   Dividends on common stock                             (53,297)     (53,297)
   Dividends on preferred stock                           (2,957)      (3,035)
   Redemptions -
      Short-term debt                                    (46,700)     (11,166)
      Long-term debt                                     (60,000)     (10,000)
   Issuances -
      Long-term debt                                        --         10,000
      Intercompany notes payable                          91,200         --
                                                       ---------    ---------
Net cash used in financing activities                    (71,754)     (67,498)
                                                       ---------    ---------

Net increase (decrease) in cash and cash equivalents      11,171      (15,412)
Cash and cash equivalents at beginning of year            10,180       28,140
                                                       ---------    ---------
Cash and cash equivalents at end of period             $  21,351    $  12,728
                                                       =========    =========

Cash paid during the periods:
   Interest (net of amount capitalized)                $  28,990    $  29,650
   Income taxes, net                                   $  39,983    $  37,940

</TABLE>

See Notes to Financial Statements.

                                      -11-

<PAGE>



CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
September 30, 1999


Note 1 - Central Illinois Public Service Company  (AmerenCIPS or the Registrant)
is a wholly-owned subsidiary of Ameren Corporation (Ameren), which is the parent
company of two utility  operating  companies,  the Registrant and Union Electric
Company  (AmerenUE).  Ameren is a registered  holding  company  under the Public
Utility  Holding  Company Act of 1935 (PUHCA)  formed in December  1997 upon the
merger of CIPSCO Incorporated (the Registrant's former parent) and AmerenUE (the
Merger).  Both  Ameren  and  its  subsidiaries  are  subject  to the  regulatory
provisions of the PUHCA. The operating  companies are engaged principally in the
generation,  transmission,  distribution  and sale of  electric  energy  and the
purchase, distribution,  transportation and sale of natural gas in the states of
Illinois and Missouri. Contracts among the companies--dealing with jointly-owned
generating facilities,  interconnecting  transmission lines, and the exchange of
electric power--are regulated by the Federal Energy Regulatory Commission (FERC)
or the Securities and Exchange Commission (SEC). Administrative support services
are provided to the Registrant by a separate Ameren subsidiary,  Ameren Services
Company.  The Registrant  serves 400,000 electric and 175,000 gas customers in a
20,000 square-mile region of central and southern Illinois.

The Registrant also has a 20% interest in Electric Energy,  Inc. (EEI), which is
accounted  for under the equity method of  accounting.  EEI owns and operates an
electric generating and transmission facility in Illinois that supplies electric
power primarily to a uranium enrichment plant located in Paducah, Kentucky.

Note 2 - Financial  statement note  disclosures,  normally included in financial
statements prepared in conformity with generally accepted accounting principles,
have been omitted in this Form 10-Q pursuant to the Rules and Regulations of the
Securities and Exchange  Commission.  However, in the opinion of the Registrant,
the disclosures contained in this Form 10-Q are adequate to make the information
presented not misleading. See Notes to Financial Statements included in the 1998
Form 10-K for information relevant to the financial statements contained in this
Form 10-Q,  including  information as to the significant  accounting policies of
the Registrant.

Note 3 - In the  opinion of the  Registrant,  the interim  financial  statements
filed as part of this Form 10-Q  reflect  all  adjustments,  consisting  only of
normal recurring adjustments,  necessary for a fair statement of the results for
the periods presented.  The Registrant's  financial  statements were prepared to
permit the information  required in the Financial Data Schedule  (FDS),  Exhibit
27,  to be  directly  extracted  from  the  filed  statements.  The FDS  amounts
correspond  to or are  calculable  from the amounts  reported  in the  financial
statements or notes thereto.

Note 4 - Due to the  effect of  weather  on sales and  other  factors  which are
characteristic of public utility  operations,  financial results for the periods
ended September 30, 1999 and 1998, are not necessarily  indicative of trends for
any three-month, nine-month or 12-month period.

Note 5 -In conjunction with the Electric Service Customer Choice and Rate Relief
Law of 1997 (the Law), a 5 percent  residential  electric  rate decrease for the
Registrant's electric customers was effective August 1, 1998. This rate decrease
is  expected to  decrease  electric  revenues  $11  million  annually,  based on
estimated levels of sales and assuming normal weather conditions. The Registrant
may be subject to additional 5 percent  residential  electric rate  decreases in
each of 2000 and 2002,  to the  extent  its rates  exceed  the  Midwest  utility
average at that time.  The  Registrant's  rates are currently  below the Midwest
utility average.

The Law also contains a provision requiring one-half of excess earnings from the
Illinois  jurisdiction  for the years 1998  through  2004 to be  refunded to the
Registrant's  customers.  Excess  earnings  are  defined  as the  portion of the
two-year average annual rate of return on common equity in excess of 1.5 percent
of the two-year average of an Index, as defined in the Law. The Index is defined
as the sum of the  average  for the  twelve  months  ended  September  30 of the
average  monthly  yields of the  30-year U. S.  Treasury  bonds plus  prescribed
percentages  ranging from 4 percent to 5 percent.  In July 1999,  Senate Bill 24
was passed which increased the prescribed  percentages to 7 percent beginning in
2000.  Filings must be made with the Illinois  Commerce  Commission on or before
March  31 of each  year  2000  through  2005.  As of  September  30,  1999,  the
Registrant  recorded an estimated $8 million credit that it expects to return to
its customers under the Law for the two year period ended December 31, 1999.

                                      -12-

<PAGE>

Note 6 - The Registrant has  transactions  in the normal course of business with
other Ameren  subsidiaries.  These transactions are primarily comprised of power
purchases and sales and services received or rendered.  Intercompany receivables
included in other accounts and notes receivable were  approximately  $32 million
and $2 million,  respectively,  as of September  30, 1999 and December 31, 1998.
Intercompany   payables   included  in  accounts  and  wages   payable   totaled
approximately  $33 and $12 million,  respectively,  as of September 30, 1999 and
December 31, 1998.

In March 1999, the Registrant,  along with Ameren Services Company and AmerenUE,
entered  into a utility  money pool  agreement  to  coordinate  and  provide for
certain short-term cash and working capital  requirements.  Borrowings under the
agreement  are limited to $500 million and are due on demand or within one year.
Interest is calculated at varying rates depending on the composition of internal
and external funds in the money pool. The money pool is  administered  by Ameren
Services  Company.  The Registrant  recorded an intercompany note payable of $91
million, representing funds borrowed from the utility money pool as of September
30, 1999.

Note 7 - Statement of Position (SOP) 98-1, "Accounting for the Costs of Computer
Software  Developed or Obtained for Internal Use" became effective on January 1,
1999.  SOP 98-1  provides  guidance  on  accounting  for the  costs of  computer
software  developed or obtained for internal use. Under SOP 98-1, certain costs,
may be capitalized and amortized over some future period.  SOP 98-1 did not have
a  material  impact  on  the  Registrant's  financial  position  or  results  of
operations upon adoption.

The  Emerging  Issues Task Force of the  Financial  Accounting  Standards  Board
(EITF)  Issue  98-10,   "Accounting  for  Energy  Trading  and  Risk  Management
Activities" became effective on January 1, 1999. EITF 98-10 provides guidance on
the  accounting  for energy  contracts  entered into for the purchase or sale of
electricity,  natural  gas,  capacity  and  transportation.  The EITF  reached a
consensus in EITF 98-10 that sales and purchase  activities being performed need
to be classified as either  trading or  non-trading.  Furthermore,  transactions
that are determined to be trading  activities would be recognized on the balance
sheet measured at fair value,  with gains and losses included in earnings.  EITF
98-10  includes  factors  or  indicators  to  consider  when  determining  if  a
transaction is a trading or non-trading activity. Currently, AmerenEnergy, Inc.,
an energy marketing subsidiary of Ameren, enters into contracts for the sale and
purchase of energy on behalf of AmerenCIPS.  These  transactions  are considered
non-trading  activities  and are  accounted  for using the accrual or settlement
method, which represents industry practice.  Should any of AmerenEnergy's future
activities be considered  material  trading  activities  based on the indicators
provided in EITF 98-10, a change in accounting practice would be required.  EITF
98-10 did not have a material impact on the Registrant's  financial  position or
results of operations upon adoption.

                                      -13-


<PAGE>


<TABLE>
<CAPTION>

Note 8 -  Segment  information  for the  three  month,  nine  month and 12 month
periods ended September 30, 1999 and 1998 is as follows:

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

(in thousands)                                Electric          Gas            Total
- ----------------------------------------------------------------------------------------

Three months ended September 30, 1999:

<S>                                       <C>               <C>             <C>
Revenues                                    $261,453          $17,874         $279,327
Operating Income                              53,763               82           53,845
- ----------------------------------------------------------------------------------------

Three months ended September 30, 1998:

Revenues                                    $230,422          $16,253         $246,675
Operating Income (Loss)                       50,880             (257)          50,623
- ----------------------------------------------------------------------------------------

Nine months ended September 30, 1999:

Revenues                                    $617,029          $91,999         $709,028
Operating Income                             102,182            6,353          108,535
- ----------------------------------------------------------------------------------------

Nine months ended September 30, 1998:

Revenues                                    $568,866          $92,153         $661,019
Operating Income                              97,806            2,978          100,784
- ----------------------------------------------------------------------------------------

12 months ended September 30, 1999:

Revenues                                    $770,081         $125,352         $895,433
Operating Income                             119,358            8,437          127,795
- ----------------------------------------------------------------------------------------

12 months ended September 30, 1998:

Revenues                                    $734,692         $142,534         $877,226
Operating Income                             109,773            6,342          116,115
- ----------------------------------------------------------------------------------------

</TABLE>


Note 9 - Certain  reclassifications were made to prior-year financial statements
to conform to current-period presentation.

                                      -14-

<PAGE>



                           PART II. OTHER INFORMATION


ITEM 5.  OTHER INFORMATION

         On August 26, 1999,  the Board of Directors of the  Registrant  amended
its By-Laws to change the date for holding its annual meeting of stockholders to
the fourth  Tuesday of April in each year to  coincide  with the annual  meeting
date of its parent, Ameren Corporation.

         In addition,  the By-Laws were  amended to include a  requirement  that
stockholders who intend to submit a proposal in person at an annual meeting,  or
who intend to nominate a director at a meeting,  must  provide  advance  written
notice along with other prescribed information.  In general, such notice must be
received by the Secretary of the  Registrant  not later than 60 nor earlier than
90 days prior to the first  anniversary of the preceding  year's annual meeting.
Consequently,  for the Registrant's  annual meeting of stockholders for the year
2000,  stockholders  who intend to submit a  stockholder  proposal  or  director
nomination  in person at the meeting  must provide  written  notice by not later
than February 22, 2000 or earlier than January 23, 2000.

         Any stockholder  proposal  intended for inclusion in the proxy material
for the Registrant's 2000 annual meeting of stockholders must be received by the
Registrant by December 1, 1999.


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

         (a)   Exhibits.

               Exhibit 3(ii)-By-Laws of Central Illinois Public Service Company,
               as amended as of August 26, 1999.

               Exhibit 12 -  Computation  of Ratio of Earnings to Fixed  Charges
               and  Preferred  Stock  Dividend  Requirements,  12  Months  Ended
               September 30, 1999.

               Exhibit 27 - Financial Data Schedule.

         (b)   Reports on Form 8-K.  None.


                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                          CENTRAL ILLINOIS PUBLIC
                                             SERVICE COMPANY
                                               (Registrant)


                                         By   /s/ Warner L. Baxter
                                            -----------------------
                                                Warner L. Baxter
                                         Vice President and Controller
                                         (Principal Accounting Officer)

Date:  November 15, 1999


                                      -15-




                                     BYLAWS
                                       OF
                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY



                                    ARTICLE I
                              SHARES AND TRANSFERS

         Section  1. Each  holder of duly paid  shares of the  Company  shall be
entitled to a certificate or certificates stating the number and class of shares
owned by such  holder.  Such  certificates  shall be signed  by the  appropriate
officers of the Company (which,  in the absence of contrary action by the Board,
shall be the President or any Vice  President and the Secretary or any Assistant
Secretary  of the  Company);  shall be  sealed  with the  corporate  seal of the
Company,  which seal may be facsimile;  and shall be countersigned by a Transfer
Agent, and countersigned and registered by a Registrar,  appointed by the Board.
If a certificate  is  countersigned  by a Transfer Agent and  countersigned  and
registered by a Registrar,  other (in each case) than the Company  itself or its
employee,  the signature of either or both of such officers of the Company,  and
the countersignature of any such Transfer Agent or its officer or employee,  may
be facsimiles. In case any officer of the Company, or any officer or employee of
a Transfer Agent,  who has signed or whose  facsimile  signature has been placed
upon any such  certificate  shall  cease to be an officer  of the  Company or an
officer or an employee of the Transfer  Agent,  as the case may be,  before such
certificate  is issued,  the  certificate  may be issued by the Company with the
same effect as if such officer of the Company or such officer or employee of the
Transfer  Agent  had  not  ceased  to be  such  at the  date  of  issue  of such
certificate.

         Section  2.  Shares  shall  be  transferable  only on the  books of the
Company and upon proper endorsement and surrender of the outstanding certificate
or certificates representing such shares. If an outstanding certificate shall be
lost,  destroyed or stolen,  the holder thereof may have a new certificate  upon
producing  evidence  satisfactory  to the Company of such loss,  destruction  or
theft and upon  furnishing to the Company,  the Transfer Agent and the Registrar
indemnity deemed sufficient by the Company.

         Section 3.  Notwithstanding the foregoing provisions of this Article I,
the Board of Directors may also provide by resolution that some or all of any or
all classes and series of its shares shall be  uncertificated  shares,  provided
that such  resolution  shall not apply to shares  represented  by a  certificate
until such  certificate  is  surrendered  to the  Company.  Except as  otherwise
provided by statute, the rights and obligations of the holders of uncertificated
shares  and  the  rights  and   obligations  of  the  holders  of   certificates
representing shares of the same class and series shall be identical.

<PAGE>


                                   ARTICLE II
                            MEETINGS OF SHAREHOLDERS

         Section 1. The annual meeting of the shareholders  shall be held on the
fourth  Tuesday in April of each year (or if such day shall be a legal  holiday,
then upon the next  succeeding  day not a legal  holiday) or upon such other day
determined by resolution  of the Board of  Directors.  Each such regular  annual
meeting shall be held at such time and at such  location,  within or without the
State of  Illinois,  as the  Board of  Directors  shall  order.  At such  annual
meeting,  a board of directors shall be elected and such other business shall be
transacted as may properly come before such meeting.

         Section 2. Special  meetings of the  shareholders  may be called by the
President,  by the Board of Directors, by the holders of not less than one-fifth
of all the  outstanding  shares  entitled  to vote on the  matter  for which the
meeting is called,  or in such other manner as may be provided by statute.  Each
such special meeting shall be held at such location, within or without the State
of Illinois, as the Board of Directors shall order.

         Section 3. Written notice of the place, day and hour of each meeting of
shareholders and, in the case of a special meeting,  the purpose or purposes for
which  the  meeting  is  called,  shall be given to each  shareholder  of record
entitled to vote at such meeting. Such notice shall be sent by mail to each such
shareholder,  at the address of such shareholder as it appears on the records of
the  Company,  not less than ten days or more than sixty days before the date of
the meeting,  except in cases where some other  special  method of notice may be
required by  statute,  in which case the  statutory  method  shall be  followed.
Notice of any  meeting  of the  shareholders  may be waived by any  shareholder.
Attendance of a shareholder  (either in person or by proxy) at any meeting shall
constitute  waiver of notice  thereof  unless the  shareholder  (in person or by
proxy,  as the case may be) at the meeting objects to the holding of the meeting
because proper notice was not given.

         Section  4. At any  shareholders'  meeting  a  majority  of the  shares
outstanding and entitled to vote on the matter  (excluding such shares as may be
owned by the  Company)  must be  represented  (either  in person or by proxy) in
order  to  constitute  a  quorum  for  consideration  of  such  matter,  but the
shareholders  represented at any meeting, though less than a quorum, may adjourn
the  meeting  to some other day or sine die.  If a quorum is present  (either in
person or by proxy) at a  shareholders'  meeting,  the  affirmative  vote of the
holders of the  majority of shares  represented  at the meeting and  entitled to
vote on a matter  shall  be the act of the  shareholders,  unless  the vote of a
greater  number or voting by classes shall be required by law or the Articles of
Incorporation.

         Section 5. The  President  and  Secretary  of the Company  shall act as
Chairman and Secretary,  respectively, of each shareholders' meeting, unless the
shareholders represented at the meeting shall otherwise decide.

                                      -2-

<PAGE>

         Section 6. (a) (1)  Nominations of persons for election to the Board of
Directors  of the Company and the proposal of business to be  considered  by the
stockholders  may be made at an annual meeting of  stockholders  (a) pursuant to
the  Company's  notice of meeting,  (b) by or at the  direction  of the Board of
Directors  or (c) by any  stockholder  of the Company who was a  stockholder  of
record at the time of giving  of'  notice  provided  for in this  Bylaw,  who is
entitled to vote at the meeting and who complies with the notice  procedures set
forth in this Bylaw.

                  (2) For  nominations or other business to be properly  brought
before an annual  meeting by a  stockholder  pursuant to clause (c) of paragraph
(a) (1) of this Bylaw,  the stockholder must have given timely notice thereof in
writing to the Secretary of the Company and such other  business must  otherwise
be a proper matter for stockholder action. To be timely, a stockholder's  notice
shall be delivered to the  Secretary at the principal  executive  offices of the
Company not later than the close of  business  on the 60th day nor earlier  than
the close of  business  on the 90th day prior to the  first  anniversary  of the
preceding year's annual meeting;  provided,  however, that in the event that the
date of the  annual  meeting  is more  than 30 days  before or more than 60 days
after such anniversary  date,  notice by the stockholder to be timely must be so
delivered  not earlier  than the close of business on the 90th day prior to such
annual meeting and not later than the close of business on the later of the 60th
day prior to such  annual  meeting  or the 10th day  following  the day on which
public announcement of the date of such meeting is first made by the Company. In
no event shall the public  announcement  of an  adjournment of an annual meeting
commence a new time period for the giving of a stockholder's notice as described
above. Such stockholder's  notice shall set forth (a) as to each person whom the
stockholder proposes to nominate for election or re-election as a director,  all
information  relating  to  such  person  that is  required  to be  disclosed  in
solicitations of proxies for election of directors in an election contest, or is
otherwise required, in each case pursuant to Regulation 14A under the Securities
Exchange Act of 1934, as amended (the "Exchange Act") and Rule 14a-11 thereunder
(including  such person's  written consent to being named in the proxy statement
as a nominee  and to  serving  as a director  if  elected);  (b) as to any other
business  that the  stockholder  proposes to bring before the  meeting,  a brief
description  of the  business  desired to be brought  before  the  meeting,  the
reasons for conducting such business at the meeting and any material interest in
such business of such  stockholder  and the beneficial  owner,  if any, on whose
behalf the proposal is made; and (c) as to the stockholder giving the notice and
the beneficial owner, if any, on whose behalf the nomination or proposal is made
(i) the name and address of such  stockholder,  as they appear on the  Company's
books,  and of such beneficial  owner and (ii) the class and number of shares of
the Company which are owned  beneficially  and of record by such stockholder and
such beneficial owner.

                  (3)  Notwithstanding   anything  in  the  second  sentence  of
paragraph (a) (2) of this Bylaw to the contrary, in the event that the number of
directors  to be elected to the Board of  Directors  of the Company is increased
and there is no public  announcement  by the Company  naming all of the nominees
for director or specifying the size of the increased Board of Directors at least
70 days prior to the first anniversary of the preceding year's annual meeting, a
stockholder's notice required by this Bylaw shall also be considered timely, but
only with respect to nominees for any new positions created by such increase, if
it shall be delivered to the Secretary at the principal executive offices of the
Company not later than the close of business on

                                      -3-

<PAGE>

the 10th day following the day on which such public  announcement  is first made
by the Company.

                  (b) Only such business shall be conducted at a special meeting
of  stockholders  as shall have been brought before the meeting  pursuant to the
Company's notice of meeting. Nominations of persons for election to the Board of
Directors may be made at a special  meeting of  stockholders  at which directors
are to be elected  pursuant to the Company's  notice of meeting (1) by or at the
direction of the Board of Directors or (2) provided  that the Board of Directors
has  determined  that  directors  shall  be  elected  at  such  meeting,  by any
stockholder  of the Company who is a stockholder of record at the time of giving
of notice  provided  for in this  Bylaw,  who shall be  entitled  to vote at the
meeting and who complies with the notice  procedures set forth in this Bylaw. In
the event the Company calls a special meeting of stockholders for the purpose of
electing one or more directors to the Board of Directors,  any such  stockholder
may  nominate a person or persons  (as the case may be),  for  election  to such
position(s)   as  specified  in  the  Company's   notice  of  meeting,   if  the
stockholder's  notice  required  by  paragraph  (a) (2) of this  Bylaw  shall be
delivered to the Secretary,  at the principal  executive  offices of the Company
not earlier  than the close of  business  on the 90th day prior to such  special
meeting  and not later than the close of  business  on the later of the 60th day
prior to such special  meeting or the 10th day following the day on which public
announcement  is  first  made of the  date  of the  special  meeting  and of the
nominees proposed by the Board of Directors to be elected at such meeting. In no
event  shall the public  announcement  of an  adjournment  of a special  meeting
commence a new time period for the giving of a stockholder's notice as described
above.

                  (c) (1) Only such persons who are nominated in accordance with
the  procedures  set forth in this Bylaw shall be eligible to serve as directors
and only such business shall be conducted at a meeting of  stockholders as shall
have been brought before the meeting in accordance with the procedures set forth
in this  Bylaw.  Except as  otherwise  provided  by  statute,  the  Articles  of
Incorporation or these Bylaws,  the chairman of the meeting shall have the power
and duty to  determine  whether a  nomination  or any  business  proposed  to be
brought  before  the  meeting  was made or  proposed,  as the  case  may be,  in
accordance  with the  procedures  set forth in this Bylaw and,  if any  proposed
nomination  or business is not in  compliance  with this Bylaw,  to declare that
such defective proposal or nomination shall be disregarded.

                  (2) For purposes of this Bylaw,  "public  announcement"  shall
mean  disclosure  in a press  release  reported  by the Dow Jones News  Service,
Associated Press or comparable  national news service or in a document  publicly
filed by the Company with the  Securities  and Exchange  Commission  pursuant to
Section 13, 14 or 15(d) of the Exchange Act.

                  (3) Notwithstanding the foregoing  provisions of this Bylaw, a
stockholder  shall also comply with all applicable  requirements of the Exchange
Act and the rules and  regulations  thereunder  with  respect to the matters set
forth in this Bylaw.  Nothing in this Bylaw shall be deemed to affect any rights
(a) of  stockholders  to request  inclusion of proposals in the Company's  proxy
statement pursuant to Rule 14a-8 under the Exchange Act or (b) of the holders of
any series of Preferred Stock to elect directors under specified circumstances.

                                      -4-

<PAGE>

                                   ARTICLE III
                               BOARD OF DIRECTORS

         Section 1. The business and affairs of the Company  shall be managed by
or under the  direction  of the Board of Directors  consisting  of not less than
four or more than nine members. The exact number of directors within the minimum
and maximum limitations  specified in the preceding sentence shall be fixed from
time to time by the Board of  Directors  pursuant to a  resolution  adopted by a
majority  of the entire  Board of  Directors.  The Board of  Directors  shall be
elected at each annual meeting of the  shareholders,  but, if for any reason the
election shall not be held at an annual meeting,  it may be subsequently held at
any special  meeting of the  shareholders  after  proper  notice.  Directors  so
elected  shall  hold  office  until  the  next  succeeding   annual  meeting  of
shareholders or until their respective successors,  willing to serve, shall have
been  elected and  qualified.  Any vacancy  occurring  in the Board of Directors
arising between  meetings of shareholders by reason of an increase in the number
of  directors  or  otherwise  may be filled by a majority  of the members of the
Board.

         Section  2. A meeting  of the Board of  Directors  shall be held on the
same date as the annual meeting of  shareholders in each year, at the same place
where such annual  meeting  shall have been held or at such other place as shall
be determined by the Board.  Regular meetings of the Board shall be held in such
place,  within or without the State of Illinois,  and on such dates each year as
shall be  established  from  time to time by the  Board.  Notice  of every  such
regular  meeting of the Board,  stating the place,  day and hour of the meeting,
shall be given to each  director  personally,  or by telegraph or other  written
means of  electronic  communication,  or by  depositing  the  same in the  mails
properly  addressed,  at least two days before the date of such meeting.  Except
where  required by statute,  neither the business to be  transacted  at, nor the
purpose of, any regular or special meeting of the Board need be specified in the
notice or waiver of notice of such meeting.

         Section 3. Special  meetings of the Board of Directors may be called at
any time by the President, or by a Vice President,  when acting as President, or
by any two directors. Notice of such meeting, stating the place, day and hour of
the  meeting  shall be given  to each  director  personally  in  writing,  or by
telegraph or other written means of electronic  communication,  or by depositing
the same in the mails  properly  addressed,  or  orally  promptly  confirmed  by
written notice in any one of the aforesaid forms, not less than the day prior to
the date of such meeting.

         Section  4.  Notice  of any  meeting  of the Board may be waived by any
director.  Attendance  of a director at any meeting shall  constitute  waiver of
notice of such meeting except where a director attends a meeting for the express
purpose of objecting to the  transaction of any business at the meeting  because
the meeting is not lawfully called or convened.

Section 5. A majority of the Board of  Directors  shall  constitute a quorum for
the  transaction  of  business  at any  meeting  of the  Board,  but less than a
majority of the Board may adjourn the meeting to some other day or sine die. The
act of the majority of the  directors  present at a meeting at which a quorum is
present shall be the act of the Board unless the vote of

                                      -5-

<PAGE>

a greater number or the vote of any class of directors  shall be required by the
Articles of Incorporation. The President of the Company shall act as Chairman at
each meeting of the Board but, in the President's  absence, one of the directors
present at the meeting  who shall have been  elected for the purpose by majority
vote of those directors in attendance  shall act as Chairman;  and the Secretary
of the Company, or in the Secretary's stead, an Assistant Secretary shall act as
Secretary  at each such  meeting.  The members of the Board shall  receive  such
compensation as the Board may from time to time by resolution determine.


                                   ARTICLE IV
                      COMMITTEES OF THE BOARD OF DIRECTORS

         Section 1. A majority of directors may appoint committees,  standing or
special, from time to time from among members of the Board, and confer powers on
such  committees  and revoke such powers and  terminate  the  existence  of such
committees at its pleasure.

         Section 2.  Meetings of any  committee may be called in such manner and
may be held at such  times  and  places  as  such  committee  may by  resolution
determine, provided that a meeting of any committee may be called at any time by
the  President  of the Company.  Members of all  committees  shall  receive such
compensation  as the  Board of  Directors  may from  time to time by  resolution
determine.

         Section 3. Each  committee  shall have such  authority  of the Board of
Directors as shall be granted to it by the Board; provided, however, a committee
may not take any action not permitted to be taken by a committee pursuant to the
Business Corporation Act of 1983, as amended from time to time.



                                    ARTICLE V
                                    OFFICERS

         Section  1.  There  shall be  elected  by the  Board of  Directors  (if
practicable at its first meeting after the annual  election of directors in each
year) the following principal officers, namely: A President, such number of Vice
Presidents  as the Board may from time to time  decide  upon (any one or more of
whom may be designated as Executive  Vice  President,  Senior Vice  President or
otherwise),  a Secretary,  a Treasurer  and a  Controller.  References  in these
Bylaws to Vice  Presidents  shall  include any such  Executive  Vice  President,
Senior Vice President or other Vice President,  however  denominated.  The Board
may in its discretion also elect such other officers as may from time to time be
provided  for by the  Board.  Any two or more  offices  may be held by the  same
person. All officers, unless sooner removed, shall hold their respective offices
until the first  meeting  of the Board of  Directors  after the next  succeeding
annual election of directors and until their successors, willing to serve, shall
have been  elected,  but any  officer,  including  any officer  appointed by the
President as provided in Section 2 of this Article V, may

                                      -6-

<PAGE>

be removed from office at the pleasure of the Board.  Election or appointment of
an officer shall not of itself create contract rights.

         Section 2. The President  shall be the chief  executive  officer of the
Company  and shall have the general  management  and  direction,  subject to the
control of the Board of Directors, of the business of the Company, including the
power to appoint and to remove and  discharge  any and all  assistant  officers,
agents and  employees  of the Company not elected or  appointed  directly by the
Board of  Directors.  The President may execute for and on behalf of the Company
any contracts,  deeds,  mortgages,  leases,  bonds, or other instruments and may
accomplish  such  execution  either under or without the seal of the Company and
either individually or with the Secretary, any Assistant Secretary, or any other
officer or person thereunto  authorized by the Board of Directors,  according to
the  requirements of the form of the  instrument.  The President shall have such
other powers and duties as usually  devolve upon the president of a corporation,
and such further powers and duties as may from time to time be prescribed by the
Board of  Directors.  The  President may delegate any part of the duties of that
office to one or more of the Vice Presidents of the Company.

         Section  3. Each of the Vice  Presidents  shall  have such  powers  and
duties as may be prescribed  for such office by the Board of Directors or as may
be  prescribed  for or  delegated to such  officer by the  President.  Each Vice
President  may execute for and on behalf of the  Company any  contracts,  deeds,
mortgages,  leases,  bonds, or other instruments in each case in accordance with
the authority therefor granted by the President or the Board of Directors, which
authority may be general or confined to specific  instances.  Such execution may
be  accomplished  either  individually  or with  any  other  officer  or  person
thereunto  authorized by the  President or the Board of Directors,  according to
the  requirements of the form of the instrument.  In the absence or inability of
the President or in case of the President's  death,  resignation or removal from
office,  the powers and duties of the President shall  temporarily  devolve upon
such one of the Vice  Presidents  as the Board  shall have  designated  or shall
designate for the purpose and the Vice  President so  designated  shall have and
exercise  all the powers  and duties of the  President  during  such  absence or
disability or until the vacancy in the office of President shall be filled. Each
Vice  President  may delegate any part of the duties of that office to employees
of the Company under such Vice President's supervision.

     Section  4.  The  Secretary  shall  attend  all  meetings  of the  Board of
Directors,  shall keep a true and faithful  record thereof in proper books to be
provided for that purpose,  and shall have the custody and care of the corporate
seal, records,  minutes and stock books of the Company. The Secretary shall also
act as  Secretary  of all  shareholders'  meetings,  and keep a record  thereof,
except  to the  extent  some  other  person  may have  been  selected  to act as
Secretary by such  meeting.  The Secretary  shall keep a suitable  record of the
addresses of shareholders, shall have general charge of the stock transfer books
of the Company,  and shall, except as may be otherwise required by statute or by
the  Bylaws,  sign,  issue and  publish all  notices  required  for  meetings of
shareholders  and for meetings of the Board of Directors.  The  Secretary  shall
sign all share  certificates,  bonds and mortgages,  and all other documents and
papers to which the Secretary's signature may be necessary or appropriate, shall
affix the seal,  and shall  have such other  powers  and duties as are  commonly
incidental to the office of Secretary or as may be prescribed for or

                                      -7-


<PAGE>

delegated to that office by the Board of  Directors,  by the  President,  or, if
authorized by the Board or the President to prescribe such powers and duties, by
a Vice  President.  The  Secretary  may  delegate any part of the duties of that
office to employees of the Company under the Secretary's supervision.

         Section 5. The Treasurer shall have charge of, and be responsible  for,
the collection,  receipt,  custody and disbursement of the funds of the Company,
and the  deposit of its funds in the name of the  Company in such  banks,  trust
companies or safety vaults as the Board of Directors may direct which  direction
may be general or confined to specific  depositories.  The Treasurer  shall have
custody of such books, receipted vouchers and other papers and records as in the
practical  business  operations  of the Company  shall  naturally  belong in the
office or custody of the  Treasurer  or as shall be placed in the custody of the
Treasurer by the Board of Directors, by the President,  or, if authorized by the
Board or the President, by a Vice President. The Treasurer shall have such other
powers and duties as are  commonly  incidental  to the office of Treasurer or as
may be prescribed for or delegated to that office by the Board of Directors,  by
the President, or, if authorized by the Board or the President to prescribe such
powers and duties, by a Vice President.  The Treasurer may be required to give a
bond to the Company for the faithful  discharge of the  Treasurer's  duties,  in
such form and in such amount and with such  sureties as shall be  determined  by
the Board of Directors.  The Treasurer may delegate any part of the  Treasurer's
duties to employees of the Company under the Treasurer's supervision.

         Section 6. The Controller shall be the principal  accounting officer of
the  Company.  Except  as  otherwise  provided  in these  Bylaws  and  except as
otherwise provided by the Board of Directors, the Controller will be responsible
for the direction of the auditing  organization  of the Company  (other than the
Internal  Audit  function),  the  establishment  and  maintenance  of accounting
procedures,  the  interpretation  of all  financial  statements  and  accounting
reports of the Company and functional  supervision over the records of all other
departments of the Company pertaining to revenues, expenses, moneys, securities,
properties,  materials and supplies. The Controller shall have such other powers
and duties as are commonly  incidental  to the office of Controller or as may be
prescribed for or delegated to the Controller by the Board of Directors,  by the
President,  or, if authorized  by the Board or the  President to prescribe  such
powers and duties, by a Vice President. The Controller may be required to give a
bond to the Company for the faithful  discharge of the Controller's  duties,  in
such form and in such amount and with such  sureties as shall be  determined  by
the Board of Directors. The Controller may delegate any part of the Controller's
duties to employees of the Company under the Controller's supervision.

         Section  7.  The  Assistant  Vice  Presidents,  Assistant  Secretaries,
Assistant Treasurers and Assistant Controllers shall,  respectively,  assist the
Vice Presidents,  the Secretary, the Treasurer and the Controller of the Company
in the performance of the respective duties assigned to such principal  officers
and, in assisting the  respective  principal  officer,  each  assistant  officer
shall,  for such  purposes,  have the same  powers as the  respective  principal
officer.  The  powers  and  duties of any  principal  officer  shall,  except as
otherwise  ordered  by the  Board of  Directors,  temporarily  devolve  upon the
respective assistant in case of the absence,  disability,  death, resignation or
removal from office of such principal officer.

                                      -8-

<PAGE>

                                   ARTICLE VI
                                  MISCELLANEOUS

         Section 1. The funds of the Company shall be deposited to its credit in
such banks or trust companies, as the Board of Directors from time to time shall
approve,  which approval may be general or confined to specific instances.  Such
funds shall be  withdrawn  only on checks or drafts of the Company or by direct,
wire or other  electronic  transfer of funds for the  purposes of the Company in
accordance with procedures relating to signatures and authorizations by officers
of the Company  which are approved by the Board of Directors  from time to time,
which approval may be general or confined to specific instances.

         Section 2. No debts shall be  contracted  except for  current  expenses
unless  authorized by the Board of Directors,  and no bills shall be paid by the
Treasurer  unless audited and approved by the Controller or by some other person
or committee authorized by the Board of Directors to audit and approve bills for
payment.

         Section 3. All  distributions  to shareholders  and all acquisitions by
the Company of its own shares shall be authorized by the Board of Directors.

         Section 4. The fiscal  year of the  Company  shall  close at the end of
December annually.

         Section 5. All or any shares of stock of any  corporation  owned by the
Company may be voted at any meeting of the  shareholders of such  corporation by
the  President,  any Vice  President  or the  Secretary  of the Company upon any
question  that may be  presented at such  meeting,  and any such officer may, on
behalf of the Company,  waive any notice of the calling of such meeting required
by any statute or Bylaw and consent to the holding of any such  meeting  without
notice. The President,  any Vice President or the Secretary of the Company shall
have  authority to give to any person a written proxy in the name of the Company
and under its corporate seal to vote at any meeting of the  shareholders  of any
corporation all or any shares of stock of such corporation  owned by the Company
upon any  question  that may be presented  at such  meeting,  with full power to
waive any notice of the calling of such meeting required by any statute or Bylaw
and to consent to the holding of any such meeting without notice.

         Section 6. (a) The Company  shall  indemnify any person who was or is a
party,  or is  threatened  to be made a party to,  any  threatened,  pending  or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the Company) by reason
of the fact that such person is or was a director, officer, employee or agent of
the  Company,  or who is or was  serving  at the  request  of the  Company  as a
director, officer, employee or agent of another corporation,  partnership, joint
venture,  trust or other  enterprise,  against  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,  if
such person acted in good faith and in a manner such person reasonably  believed
to be in, or not opposed to, the best interests of the Company and, with respect
to any criminal action or proceeding,  if such person had no reasonable cause to
believe such person's

                                      -9-

<PAGE>

conduct was  unlawful.  The  termination  of any action,  suit or  proceeding by
judgment,  order, settlement,  conviction,  or upon a plea of nolo contendere or
its equivalent,  shall not, of itself,  create a presumption that the person did
not act in good faith and in a manner which such person  reasonably  believed to
be in or not opposed to the best  interests of the Company and,  with respect to
any  criminal  action or  proceeding,  that the person had  reasonable  cause to
believe that such person's conduct was unlawful.

         (b) The Company shall indemnify any person who was or is a party, or is
threatened to be made a party to, any threatened, pending or completed action or
suit by or in the right of the  Company to  procure a  judgment  in its favor by
reason of the fact that such person is or was a director,  officer,  employee or
agent of the  Company,  or is or was  serving at the request of the Company as a
director, officer, employee or agent of another corporation,  partnership, joint
venture, trust or other enterprise, against expenses (including attorneys' fees)
actually and reasonably  incurred by such person in connection  with the defense
or settlement of such action or suit, if such person being  indemnified acted in
good faith and in a manner  such  person  reasonably  believed  to be in, or not
opposed to, the best interests of the Company,  provided that no indemnification
shall be made with  respect  to any  claim,  issue,  or matter as to which  such
person has been adjudged to have been liable to the Company, unless, and only to
the  extent  that,  the court in which  such  action or suit was  brought  shall
determine upon application that,  despite the adjudication of liability,  but in
view of all the  circumstances of the case, such person is fairly and reasonably
entitled to indemnity for such expenses as the court shall deem proper.

         (c) To the extent that a director,  officer, employee or agent has been
successful,  on the merits or otherwise,  in the defense of any action,  suit or
proceeding  referred  to in  paragraph  (a) or (b),  or in defense of any claim,
issue or matter  therein,  such person  shall be  indemnified  against  expenses
(including  attorneys' fees) actually and reasonably  incurred by such person in
connection therewith.

         (d) Any indemnification under paragraph (a) or (b) (unless ordered by a
court) shall be made by the Company  only as  authorized  in the specific  case,
upon a determination that indemnification of the director,  officer, employee or
agent is proper in the circumstances  because such person has met the applicable
standard of conduct set forth in paragraph (a) or (b). Such determination  shall
be made (1) by the Board of Directors by a majority vote of a quorum  consisting
of directors who were not parties to such action, suit or proceeding,  or (2) if
such a  quorum  is not  obtainable,  or,  even if  obtainable,  if a  quorum  of
disinterested  directors so directs,  by independent  legal counsel in a written
opinion, or (3) by the shareholders of the Company.

         (e) Expenses incurred in defending a civil or criminal action,  suit or
proceeding  may be paid by the  Company in advance of the final  disposition  of
such action, suit or proceeding,  upon receipt of an undertaking by or on behalf
of the  director,  officer,  employee  or agent to repay such amount if it shall
ultimately be determined  that such person is not entitled to be  indemnified by
the Company as authorized in this Section 6.

         (f) The  indemnification  and  advancement  of expenses  provided by or
granted under the other  subsections  of this Section 6 shall be effective  with
respect to acts, errors or omissions

                                      -10-

<PAGE>

occurring  prior to, on or  subsequent  to the date of adoption  hereof and such
indemnification shall not be deemed exclusive of any other rights to which those
seeking  indemnification  or  advancement  of expenses may be entitled under any
Bylaw, agreement, vote of shareholders or disinterested directors, or otherwise,
both as to action by a director,  officer,  employee  or agent in such  person's
official  capacity  and as to action in  another  capacity  while  holding  such
office.

         (g) The Company may purchase  and  maintain  insurance on behalf of any
person who is or was a director,  officer,  employee or agent of the Company, or
who is or was  serving at the  request of the  Company as a  director,  officer,
employee or agent of another corporation,  partnership,  joint venture, trust or
other  enterprise,  against  any  liability  asserted  against  such  person and
incurred by such person in any such  capacity,  or arising out of such  person's
status as such,  whether or not the  Company  would have the power to  indemnify
such person against such liability under the provisions of this Section 6.

         (h) If the Company has paid  indemnity  or has  advanced  expenses to a
director,   officer,   employee  or  agent,   the  Company   shall   report  the
indemnification  or advance in  writing to the  shareholders  with or before the
notice of the next shareholders' meeting.

         (i) For purposes of this Section 6 references  to "the  Company"  shall
include,  in  addition to the  surviving  corporation,  any merging  corporation
(including any corporation having merged with a merging corporation) absorbed in
a merger  which,  if its separate  existence had  continued,  would have had the
power and  authority to indemnify  its  directors,  officers,  and  employees or
agents,  so that any person who was a  director,  officer,  employee or agent of
such  merging  corporation,  or was  serving  at the  request  of  such  merging
corporation as a director,  officer,  employee or agent of another  corporation,
partnership,  joint venture, trust or other enterprise,  shall stand in the same
position  under the  provisions  of this Section 6 with respect to the surviving
corporation  as such person would have with respect to such merging  corporation
if its separate existence had continued.

         (j) For purposes of this Section 6,  references  to "other  enterprise"
shall include  employee benefit plans, and references to "serving at the request
of the Company"  shall include any service as a director,  officer,  employee or
agent of the  Company  which  imposes  duties on, or  involves  services by such
director,  officer, employee, or agent with respect to an employee benefit plan,
its participants,  or  beneficiaries.  A person who acted in good faith and in a
manner  such  person  reasonably  believed  to be in the best  interests  of the
participants  and  beneficiaries  of an employee benefit plan shall be deemed to
have acted in a manner "not  opposed to the best  interests  of the  Company" as
referred to in this Section 6.

         (k) The  indemnification  and  advancement  of expenses  provided by or
granted under this Section 6 shall, unless otherwise provided when authorized or
ratified,  continue  as to a person  who has ceased to be a  director,  officer,
employee, or agent and shall inure to the benefit of the heirs,  executors,  and
administrators of that person.

                                      -11-

<PAGE>

                                   ARTICLE VII
                          AMENDMENT OR REPEAL OF BYLAWS

         These  Bylaws  may be added to,  amended  or  repealed  by the Board of
Directors at any regular or special meeting of the Board.


                                      -12-

<PAGE>





STATE OF ILLINOIS          )
                           )SS.
COUNTY OF SANGAMON         )







     I, the undersigned,  hereby certify that I am                  Secretary of
Central  Illinois  Public  Service  Company and the Custodian of the  books  and
recordsof said Company.

     I further certify that the above and foregoing is a true copy of the Bylaws
of said Company in effect on                   , 19   .

     IN WITNESS  WHEREOF,  I have hereunto set my hand and affixed the corporate
seal of said Company this day of                    ,A.D. 19   .




                                    _________________________________________



                                                    (CORPORATE SEAL)

                                      -13-



<TABLE>
<CAPTION>


CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDENDS
                                                                                              12 Months
                                                                                                 Ended
                                                        Year Ended December 31,               September 30,

                                              1994      1995      1996      1997       1998       1999

                                       Thousands of Dollars Except Ratios


<S>                                        <C>       <C>       <C>       <C>        <C>        <C>
Net Income                                   $81,913   $70,631   $77,393   $38,620    $80,147    $87,286
Add- Extraordinary items net of tax                -         -         -    24,853          -          -
                                             -------   -------   -------   -------    -------    -------
Net Income from continuing operations         81,913    70,631    77,393    63,473     80,147     87,286

   Taxes based on income                      48,523    44,483    47,286    33,922     45,412     49,810
                                             -------   -------   -------   -------    -------    -------

Net income before income taxes               130,436   115,114   124,679    97,395    125,559    137,096
                                             -------   -------   -------   -------    -------    -------

Add- fixed charges:
   Interest on long term debt                 31,164    31,168    31,409    32,271     37,260     38,159
   Other interest                                358       853     4,636     2,875      1,647      2,495
   Amortization of net debt premium, discount,
      expenses and losses                      1,678     1,703     1,709     1,643      1,132      1,165

                                             -------   -------   -------   -------    -------    -------
Total fixed charges                           33,200    33,724    37,754    36,789     40,039     41,819
                                             -------   -------   -------   -------    -------    -------

Earnings available for fixed charges         163,636   148,838   162,433   134,184    165,598    178,915
                                             =======   =======   =======   =======    =======    =======

Ratio of earnings to fixed charges              4.92      4.41      4.30      3.64       4.13       4.27


Earnings required for preferred dividends:
   Preferred stock dividends                   3,510     3,850     3,721     3,715      3,745      3,786
   Adjustment to pre-tax basis                 2,079     2,425     2,273     1,985      2,122      2,162
                                             -------   -------   -------   -------    -------    -------
                                               5,589     6,275     5,994     5,700      5,867      5,948

Fixed charges plus preferred stock dividend
    requirements                              38,789    39,999    43,748    42,489     45,906     47,767
                                             =======   =======   =======   =======    =======    =======


Ratio of earnings to fixed charges plus
    preferred stock dividend requirement        4.21      3.72      3.71      3.15       3.60       3.74
                                             =======   =======   =======   =======    =======    =======

</TABLE>


<TABLE> <S> <C>


<ARTICLE>   UT
<LEGEND>


                                                                     Exhibit 27

                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                             10-Q SEPTEMBER 30, 1999
                           FINANCIAL DATA SCHEDULE UT
          PUBLIC UTILITY COMPANIES AND PUBLIC UTILITY HOLDING COMPANIES
                  APPENDIX E TO ITEM 601 (C) OF REGULATION S-K
                             (Thousands of Dollars)

</LEGEND>




<S>                                                   <C>
<PERIOD-TYPE>                                                  9-MOS
<FISCAL-YEAR-END>                                        DEC-31-1999
<PERIOD-END>                                             SEP-30-1999
<BOOK-VALUE>                                                PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                  1,480,740
<OTHER-PROPERTY-AND-INVEST>                                        0
<TOTAL-CURRENT-ASSETS>                                       269,809
<TOTAL-DEFERRED-CHARGES>                                      29,526
<OTHER-ASSETS>                                                41,553
<TOTAL-ASSETS>                                             1,821,628
<COMMON>                                                     120,033
<CAPITAL-SURPLUS-PAID-IN>                                          0
<RETAINED-EARNINGS>                                          477,525
<TOTAL-COMMON-STOCKHOLDERS-EQ>                               597,558
                                              0
                                                   80,000
<LONG-TERM-DEBT-NET>                                         493,586
<SHORT-TERM-NOTES>                                                 0
<LONG-TERM-NOTES-PAYABLE>                                          0
<COMMERCIAL-PAPER-OBLIGATIONS>                                     0
<LONG-TERM-DEBT-CURRENT-PORT>                                 35,000
                                          0
<CAPITAL-LEASE-OBLIGATIONS>                                        0
<LEASES-CURRENT>                                                   0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                               615,484
<TOT-CAPITALIZATION-AND-LIAB>                              1,821,628
<GROSS-OPERATING-REVENUE>                                    709,028
<INCOME-TAX-EXPENSE>                                          43,380
<OTHER-OPERATING-EXPENSES>                                   557,113
<TOTAL-OPERATING-EXPENSES>                                   600,493
<OPERATING-INCOME-LOSS>                                      108,535
<OTHER-INCOME-NET>                                             1,606
<INCOME-BEFORE-INTEREST-EXPEN>                               110,141
<TOTAL-INTEREST-EXPENSE>                                      31,863
<NET-INCOME>                                                  78,278
                                    2,842
<EARNINGS-AVAILABLE-FOR-COMM>                                 75,436
<COMMON-STOCK-DIVIDENDS>                                      53,297
<TOTAL-INTEREST-ON-BONDS>                                          0  <F1>
<CASH-FLOW-OPERATIONS>                                       163,491
<EPS-BASIC>                                                     0.00  <F2>
<EPS-DILUTED>                                                   0.00  <F2>

<FN>
<F1>  Required in fiscal year-end only.
<F2>  Information not normally disclosed in financial statements and notes.
</FN>




</TABLE>


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