ILLINOIS POWER CO
10-Q/A, 1998-08-13
ELECTRIC & OTHER SERVICES COMBINED
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                                                                     Amendment 1

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


                                    Form 10-Q

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

              For the quarterly period ended JUNE 30, 1998

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

         For the transition period from __________to __________

Commission   Registrants; State of Incorporation;            IRS Employer
File Number   Address; and Telephone Number              Identification No.

   1-11327           Illinova Corporation                    37-1319890
                     (an Illinois Corporation)
                     500 S. 27th Street
                     Decatur, IL  62521
                     (217) 424-6600

   1-3004            Illinois Power Company                  37-0344645
                     (an Illinois Corporation)
                     500 S. 27th Street
                     Decatur, IL  62521
                     (217) 424-6600

      Indicate by check mark whether the  registrants (1) have 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 report),  and (2) have been subject to such
filing requirements for the past 90 days.

                    Illinova        Yes X         No
                    Corporation        ----         ----
                    Illinois Power  Yes X         No
                    Company            ----         ----

      Indicate the number of shares  outstanding of each of the issuers' classes
of common stock, as of the latest practicable date:

Illinova Corporation          Common stock, no par value, 71,713,387
                              shares outstanding at July 31, 1998

Illinois Power Company        Common stock, no par value, 65,150,562
                              shares outstanding held by Illinova
                              Corporation at July 31, 1998


                                    1
<PAGE>





                              ILLINOVA CORPORATION
                             ILLINOIS POWER COMPANY

This combined Form 10-Q is separately filed by Illinova Corporation and Illinois
Power Company.  Information  contained herein relating to Illinois Power Company
is filed by Illinova Corporation and separately by Illinois Power Company on its
own behalf.  Illinois  Power Company makes no  representation  as to information
relating to Illinova Corporation or its subsidiaries, except as it may relate to
Illinois Power Company.

             FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 1998
                                      INDEX
                                                                     PAGE NO.
Part I.  FINANCIAL INFORMATION

   Item 1.  Financial Statements

            Illinova Corporation

                  Consolidated Balance Sheets                         3 - 4
                  Consolidated Statements of Income                       5
                  Consolidated Statements of Cash Flows                   6

            Illinois Power Company

                  Consolidated Balance Sheets                         7 - 8
                  Consolidated Statements of Income                       9
                  Consolidated Statements of Cash Flows                  10
            
            Notes to Consolidated Financial Statements of
                  Illinova Corporation and
                  Illinois Power Company                            11 - 16

   Item 2.  Management's Discussion and Analysis of
                       Financial Condition and Results of
                       Operations for Illinova Corporation
                       and Illinois Power Company                   17 - 26

Part II.  OTHER INFORMATION

   Item 1:  Legal Proceedings                                            27

   Item 4:  Submission of Matters to a Vote of
            Security Holders                                             28

   Item 6:  Exhibits and Reports on Form 8-K                             28

   Signatures                                                       29 - 30

   Exhibit Index                                                         31



                                       2
<PAGE>

                          PART I. FINANCIAL INFORMATION
                              ILLINOVA CORPORATION
                           CONSOLIDATED BALANCE SHEETS
          (See accompanying Notes to Consolidated Financial Statements)

                                                  JUNE 30,       DECEMBER 31,
                                                    1998             1997
            ASSETS                               (Unaudited)      (Audited)
                                                    (Millions of Dollars)

Utility Plant, at original cost
   Electric (includes construction work
        in progress of $186.9 million and
        $214.3 million, respectively)             $  6,780.5        $  6,690.4
   Gas (includes construction work
        in progress of $12.4 million and
        $10.7 million, respectively)                   675.3             663.0
                                                  ----------        ----------
                                                     7,455.8           7,353.4
Less-Accumulated depreciation                        2,891.6           2,808.1
                                                  ----------        ----------
                                                     4,564.2           4,545.3
Nuclear fuel in process                                  6.1               6.3
Nuclear fuel under capital lease                       129.2             126.7
                                                  ----------        ----------
       Total utility plant                           4,699.5           4,678.3
                                                  ----------        ----------
Investments and Other Assets                           230.3             198.8
                                                  ----------        ----------
Current Assets
   Cash and cash equivalents                            17.4              33.0
   Accounts receivable (less allowance
     for doubtful accounts of $5.5 million)
       Service                                         162.1             115.6
       Other                                            87.4             102.3
   Accrued unbilled revenue                             74.5              86.3
   Materials and supplies, at average cost            120.3              118.6
   Prepayments and other                                30.2              64.4
                                                  ----------        ----------
       Total current assets                            491.9             520.2
                                                  ----------        ----------

Deferred Charges                                       216.2             185.7
                                                  ----------        ----------
                                                  $ 5,637.9         $  5,583.0
                                                  ==========        ==========



                                       3
<PAGE>




                              ILLINOVA CORPORATION
                           CONSOLIDATED BALANCE SHEETS
          (See accompanying Notes to Consolidated Financial Statements)

                                                  JUNE 30,       DECEMBER 31,
                                                    1998            1997
CAPITAL AND LIABILITIES                          (Unaudited)      (Audited)
                                                    (Millions of Dollars)

Capitalization
   Common stock -
     No par value, 200,000,000 shares authorized;
     75,681,937 shares issued, stated at                  $ 1,425.7   $  1,425.7
   Less - Deferred compensation - ESOP                          7.9         10.2
   Retained earnings                                          (16.5)        51.7
   Less - Capital stock expense                                 7.3          7.3
   Less - 3,968,550 and 4,000,000 of common stock in
     treasury, respectively, at cost                           89.7         90.4
                                                            --------    --------
       Total common stock equity                            1,304.3      1,369.5
   Preferred stock of subsidiary                               57.1         57.1
   Company obligated mandatorily redeemable
    preferred stock of subsidiary                             197.0        197.0
   Long-term debt                                             140.0        100.0
   Long-term debt of subsidiary                             1,610.2      1,617.5
                                                            --------    --------
       Total capitalization                                 3,308.6      3,341.1
                                                            --------    --------
Current Liabilities
   Accounts payable                                           288.9        177.3
   Notes payable                                              368.3        415.3
   Long-term debt and lease obligations of
     subsidiary maturing within one year                       41.0         87.5
   Other                                                      200.4        181.6
                                                            --------    --------
       Total current liabilities                              898.6        861.7
                                                            --------    --------
Deferred Credits 
   Accumulated deferred income taxes                          961.6        969.0
   Accumulated deferred investment tax credits                204.8        208.3
   Other                                                      264.3        202.9
                                                            --------    --------
       Total deferred credits                               1,430.7      1,380.2
                                                            --------    --------

                                                          $ 5,637.9   $  5,583.0
                                                            ========    ========



                                       4
<PAGE>



<TABLE>
<CAPTION>
                             ILLINOVA CORPORATION
                      CONSOLIDATED STATEMENTS OF INCOME
        (See accompanying Notes to Consolidated Financial Statements)
                                        THREE MONTHS ENDED            SIX MONTHS ENDED
                                             JUNE 30,                     JUNE 30,
                                        1998          1997          1998           1997
                                                          (Unaudited)
                                         (Millions of dollars except per share amounts)
Operating Revenues:
<S>                                    <C>           <C>           <C>            <C>       
   Electric                          $     304.5   $     301.7  $      581.1  $      583.9
   Electric interchange                    112.7          53.5         209.0          80.1
   Gas                                      49.8          60.1         166.4         224.1
   Diversified enterprises                  80.3         127.6         166.2         225.2
                                    ------------  ------------  ------------  ------------
     Total                                 547.3         542.9       1,122.7       1,113.3
                                    ------------  ------------  ------------  ------------
Operating Expenses:
   Fuel for electric plants                 53.9          52.2         109.6          97.5
   Power purchased                         229.4          45.6         326.5          81.4
   Gas purchased for resale                 22.4          22.8          88.4         122.5
   Diversified enterprises                  85.0         150.8         179.7         259.2
   Other operating expenses                 87.9          63.6         167.7         123.0
   Maintenance                              35.0          30.5          64.0          50.2
   Depreciation & amortization              50.5          49.3         101.2          98.3
   General taxes                            34.3          33.0          73.0          71.7
                                    ------------  ------------  ------------  ------------
     Total                                 598.4         447.8       1,110.1         903.8
                                    ------------  ------------  ------------  ------------
Operating Income (Loss)                    (51.1)         95.1          12.6         209.5
                                    ------------  ------------  ------------  ------------
Other Income and Deductions:
  Miscellaneous-net                          2.8           1.4           1.3           2.2
  Equity earnings in affiliates              3.4           2.4           8.9           6.4
                                    ------------  ------------  ------------  ------------
    Total                                    6.2           3.8          10.2           8.6
                                    ------------  ------------  ------------  ------------
Income (Loss) Before Interest
  Charges and Income Taxes                 (44.9)         98.9          22.8         218.1
                                    ------------  ------------  ------------  ------------
Interest Charges:
  Interest expense                          35.9          36.0          72.5          74.2
  Allowance for borrowed funds
     used during construction               (1.2)         (1.3)         (2.3)         (2.7)
  Preferred dividend
     requirements of subsidiary              5.0           5.4           9.9          10.9
                                    ------------  ------------  ------------  ------------
     Total                                  39.7          40.1          80.1          82.4
                                    ------------  ------------  ------------  ------------
Income (Loss) Before Income Taxes          (84.6)         58.8         (57.3)        135.7
                                    ------------  ------------  ------------  ------------
Income Taxes                               (37.6)         27.4         (33.3)         60.3
                                    ------------  ------------  ------------  ------------
Net Income (Loss) Applicable to
  Common Stock                      $      (47.0) $       31.4   $     (24.0) $       75.4
                                    ============  ============  ============  ============
Earnings per common share (basic           $(0.66)        $0.42        $(0.34)        $1.00
  and diluted)
Cash dividends declared per
  common share                              $0.31         $0.31         $0.62         $0.62
Cash dividends paid per
  common share                              $0.31         $0.31         $0.62         $0.62
Weighted average number of
  common shares outstanding
  during period                        71,712,791    75,648,456    71,707,054     75,665,104

</TABLE>



                                       5
<PAGE>



                              ILLINOVA CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
          (See accompanying Notes to Consolidated Financial Statements)

                                                     SIX MONTHS ENDED
                                                         JUNE 30,
                                                  1998              1997
                                                       (Unaudited)
                                                   (Millions of Dollars)

CASH FLOWS FROM OPERATING ACTIVITIES:
  Net Income (Loss)                          $    (24.0)         $   75.4
  Items not requiring cash, net                    29.4             132.2
  Changes in assets and liabilities               229.3             (18.0)
                                               --------          --------
  Net cash provided by operating
    activities                                    234.7             189.6
                                               --------          --------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Construction expenditures                      (115.0)            (67.6)
  Other investing activities                      (28.3)            (23.2)
                                               --------          --------
  Net cash used in investing
    activities                                   (143.3)            (90.8)
                                               --------          --------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Dividends on common stock                       (44.4)            (46.8)
  Repurchase of common stock                       --               (11.2)
  Reissuance of common stock                        0.7              --
  Redemptions -
   Short-term debt                               (154.8)           (188.5)
   Long-term debt of subsidiary                  (109.2)           (150.2)
   
  Issuances -
   Short-term debt                                107.8              52.4
   Long-term debt                                  92.4             250.0
  Other financing activities                        0.5              (5.3)
                                              ---------         ---------
  Net cash used in financing
   activities                                    (107.0)            (99.6)
                                              ---------         ---------
NET CHANGE IN CASH AND
   CASH EQUIVALENTS                               (15.6)             (0.8)
CASH AND CASH EQUIVALENTS
   AT BEGINNING OF YEAR                            33.0              24.6
                                              ---------         ---------
CASH AND CASH EQUIVALENTS
   AT END OF PERIOD                           $    17.4         $    23.8
                                              =========         =========



                                       6
<PAGE>



                                   ILLINOIS POWER COMPANY
                                CONSOLIDATED BALANCE SHEETS
               (See accompanying Notes to Consolidated Financial Statements)


                                                JUNE 30,      DECEMBER 31,
                                                  1998           1997
ASSETS                                         (Unaudited)     (Audited)
                                                   (Millions of Dollars)

Utility Plant, at original cost
  Electric (includes construction work
   in progress of $186.9 million and
      $214.3 million, respectively)           $    6,780.5    $    6,690.4
  Gas (includes construction work
   in progress of $12.4 million and
      $10.7 million, respectively)                   675.3           663.0
                                              ------------     ------------
                                                   7,455.8         7,353.4
Less-Accumulated depreciation                      2,891.5         2,808.1
                                              ------------     ------------
                                                   4,564.3         4,545.3
Nuclear fuel in process                                6.1             6.3
Nuclear fuel under capital lease                     129.2           126.7
                                              ------------     ------------
     Total utility plant                           4,699.6         4,678.3
                                              ------------     ------------
Investments and Other Assets                           5.1             5.9
                                              ------------     ------------
Current Assets
  Cash and cash equivalents                            6.3            17.8
  Accounts receivable (less allowance
   for doubtful accounts of $5.5 million)
     Service                                         162.1           115.6
     Other                                            29.4            16.6
  Accrued unbilled revenue                            74.5            86.3
  Materials and supplies,
   at average cost                                   119.5           117.3
  Prepayments and other                               31.6            61.2
                                              ------------     ------------
     Total current assets                            423.4           414.8
                                              ------------     ------------

Deferred Charges                                     220.9           192.5
                                              ------------     ------------
                                              $    5,349.0    $    5,291.5
                                              ============     ============



                                       7
<PAGE>




                                   ILLINOIS POWER COMPANY
                                CONSOLIDATED BALANCE SHEETS
               (See accompanying Notes to Consolidated Financial Statements)

                                                    JUNE 30,   DECEMBER 31,
                                                     1998         1997
CAPITAL AND LIABILITIES                            (Unaudited) (Audited)
                                                   (Millions of Dollars)

Capitalization
  Common stock -
   No par value, 100,000,000 shares
   authorized; 75,643,937 shares issued,
   stated at                                  $    1,424.6    $    1,424.6
  Retained earnings                                   26.6            89.5
  Less - Capital stock expense                         7.3             7.3
  Less - 10,493,375 and 9,428,645 shares of
    common stock in treasury, respectively,
    at cost                                          237.1           207.7
                                              ------------     ------------
     Total common stock equity                     1,206.8         1,299.1
  Preferred stock                                     57.1            57.1
  Company obligated mandatorily
   redeemable preferred stock                        197.0           197.0
  Long-term debt                                   1,610.2         1,617.5
                                              ------------     ------------
     Total capitalization                          3,071.1         3,170.7
                                              ------------     ------------
Current Liabilities
  Accounts payable                                   240.0           102.7
  Notes payable                                      368.3           376.8
  Long-term debt and lease
   obligations maturing
   within one year                                    41.0            87.5
  Other                                              181.8           162.1
                                              ------------     ------------
     Total current liabilities                       831.1           729.1
                                              ------------     ------------
Deferred Credits
  Accumulated deferred income taxes                  977.8           980.6
  Accumulated deferred investment
   tax credits                                       204.8           208.3
  Other                                              264.2           202.8
                                              ------------     ------------
     Total deferred credits                        1,446.8         1,391.7
                                              ------------     ------------
                                              $    5,349.0    $    5,291.5
                                              ============     ============



                                       8
<PAGE>



<TABLE>
<CAPTION>

                             ILLINOIS POWER COMPANY
                       CONSOLIDATED STATEMENTS OF INCOME
         (See accompanying Notes to Consolidated Financial Statements)

                                       THREE MONTHS ENDED       SIX MONTHS ENDED
                                            JUNE 30,                      JUNE 30,
                                       1998            1997         1998           1997
                                                         (Unaudited)
                                                    (Millions of Dollars)
Operating Revenues:
<S>                                <C>            <C>           <C>           <C>         
   Electric                        $     304.5    $     301.7   $      581.1  $      583.9
   Electric interchange                  112.7           53.5          209.0          80.1
   Gas                                    49.8           60.1          166.4         224.1
                                  ------------   ------------   ------------  ------------
     Total                               467.0          415.3          956.5         888.1
                                  ------------   ------------   ------------  ------------

Operating Expenses and Taxes:
   Fuel for electric plants               53.9           52.2          109.6          97.5
   Power purchased                       229.4           45.6          326.5          81.4
   Gas purchased for resale               22.4           22.8           88.4         122.5
   Other operating expenses               87.9           63.6          167.7         123.0
   Maintenance                            35.0           30.5           64.0          50.2
   Depreciation & amortization            50.5           49.3          101.2          98.3
   General taxes                          34.3           33.0           73.0          71.7
   Income taxes                          (36.6)          35.7          (25.9)         72.0
                                  ------------   ------------   ------------  ------------
     Total                               476.8          332.7          904.5         716.6
                                  ------------   ------------   ------------  ------------
Operating Income (Loss)                   (9.8)          82.6           52.0         171.5
                                  ------------   ------------   ------------  ------------
Other Income and Deductions, Net           1.3            1.7            2.9           2.3
                                  ------------   ------------   ------------  ------------
Income (Loss) Before Interest
Charges                                   (8.5)          84.3           54.9         173.8
                                  ------------   ------------   ------------  ------------
Interest Charges and Other:                       
  Interest Expense                        33.3           34.2           67.4          70.1
  Allowance for borrowed funds
    used during construction              (1.2)          (1.3)          (2.3)         (2.7)
                                  ------------   ------------   ------------  ------------
     Total                                32.1           32.9           65.1          67.4
                                  ------------   ------------   ------------  ------------
Net Income (Loss)                        (40.6)          51.4          (10.2)        106.4
   Less-Preferred dividend
     requirements                          5.0            5.4            9.9          10.9
                                  ------------   -------------  ------------  -------------
Net Income (Loss) Applicable to
  Common Stock                      $    (45.6)   $      46.0    $     (20.1) $       95.5
                                  ============   ============   ============  ============
</TABLE>



                                       9
<PAGE>



                             ILLINOIS POWER COMPANY
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
          (See accompanying Notes to Consolidated Financial Statements)

                                                  SIX MONTHS ENDED
                                                      JUNE 30,
                                               1998              1997
                                                    (Unaudited)
                                               (Millions of Dollars)

CASH FLOWS FROM OPERATING ACTIVITIES:
  Net Income (Loss)                       $         (10.2) $         106.4
  Items not requiring cash, net                      34.0            133.7
  Changes in assets and liabilities                 222.9            (14.5)
                                         ----------------  ---------------
  Net cash provided by operating                    246.7            225.6
   activities                            ----------------  ---------------

CASH FLOWS FROM INVESTING ACTIVITIES:
  Construction expenditures                        (115.0)           (67.6)
  Other investing activities                          3.9             --
                                         ----------------  ---------------
  Net cash used in investing                       (111.1)           (67.6)
    activities                           ----------------  ---------------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Dividends on preferred and common
     stock                                          (52.7)           (58.0)
   Repurchase of common stock                       (29.4)           (27.5)
   Redemptions -
    Short-term debt                                (107.4)          (111.5)
    Long-term debt                                 (109.2)          (150.2)
   Issuances
    Short-term debt                                  98.9             52.4
    Long-term debt                                   52.4            150.0
    
  Other financing activities                          0.3             (5.3)
                                         ----------------  ---------------
Net cash used in financing activities              (147.1)          (150.1)
                                         ----------------  ---------------

NET CHANGE IN CASH AND CASH
  EQUIVALENTS                                       (11.5)             7.9
CASH AND CASH EQUIVALENTS AT BEGINNING
  OF YEAR                                            17.8             12.5
                                         ----------------  ---------------
CASH AND CASH EQUIVALENTS AT END
 OF PERIOD                                $           6.3   $         20.4
                                          ===============   ==============
                                         



                                       10
<PAGE>



            ILLINOVA CORPORATION AND ILLINOIS POWER COMPANY
               NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

GENERAL

      Financial  statement  note  disclosures,  normally  included in  financial
statements prepared in conformity with generally accepted accounting principles,
have been omitted from this Form 10-Q pursuant to the Rules and  Regulations  of
the  Securities  and  Exchange  Commission  (SEC).  However,  in the  opinion of
Illinova Corporation (Illinova) and Illinois Power Company (IP), the disclosures
and information contained in this Form 10-Q are adequate and not misleading. See
the consolidated  financial  statements and the accompanying notes in Illinova's
1997 Annual  Report to  Shareholders,  (included  in the Proxy  Statement),  the
consolidated financial statements and the accompanying notes in IP's 1997 Annual
Report to Shareholders (included in the Information  Statement),  Illinova's and
IP's 1997 Form 10-K filings to the SEC,  Illinova's and IP's Report on Form 10-Q
for the quarter  ended March 31,  1998,  and  Illinova's  and IP's 1998 Form 8-K
filings  to the SEC  for  information  relevant  to the  consolidated  financial
statements contained herein,  including information as to certain regulatory and
environmental matters and as to the significant accounting policies followed.

     In the opinion of Illinova,  the  accompanying  unaudited June 30, 1998 and
audited December 31, 1997 consolidated financial statements for Illinova reflect
all adjustments  necessary to present fairly the Consolidated  Balance Sheets as
of June 30, 1998 and December 31, 1997,  the  Consolidated  Statements of Income
for the three  months and the six months  ended June 30, 1998 and 1997,  and the
Consolidated Statements of Cash Flows for the six months ended June 30, 1998 and
1997.  In addition,  it is  Illinova's  and IP's  opinion that the  accompanying
unaudited  June 30, 1998 and audited  December 31, 1997  consolidated  financial
statements  for IP reflect  all  adjustments  necessary  to  present  fairly the
Consolidated  Balance  Sheets as of June 30, 1998 and  December  31,  1997,  the
Consolidated  Statements of Income for the three months and the six months ended
June 30, 1998 and 1997,  and the  Consolidated  Statements of Cash Flows for the
six months ended June 30, 1998 and 1997. Due to seasonal and other factors which
are  characteristic  of electric  and gas  utility  operations,  interim  period
results are not necessarily indicative of results to be expected for the year.

     The consolidated  financial  statements of Illinova include the accounts of
Illinova,  IP, Illinova  Generating  Company (IGC),  Illinova  Insurance Company
(IIC), Illinova Energy Partners,  Inc. (IEP), and Illinova Business Enterprises,
Inc.  (IBE).  IBE was  incorporated  in  1998  in the  state  of  Illinois.  All
significant intercompany balances and transactions have been eliminated from the
consolidated  financial statements.  All non-utility operating  transactions are
included in the sections titled "Diversified  enterprises",  "Interest expense",
"Income  taxes" and "Other Income and  Deductions"  in  Illinova's  Consolidated
Statements of Income.

      The  consolidated  financial  statements  of IP include  the  accounts  of
Illinois  Power  Capital,  L.P.  and  Illinois  Power  Financing  I (IPFI).  All
significant intercompany balances and transactions have been eliminated from the
consolidated  financial statements.  All non-utility operating  transactions are
included  in the  section  titled  "Other  Income and  Deductions,  Net" in IP's
Consolidated Statements of Income.




                                       11
<PAGE>




REGULATORY AND LEGAL MATTERS

      OPEN ACCESS AND COMPETITION

      On December 16, 1997, Illinois Governor Edgar signed electric deregulation
legislation, An Act in Relation to the Competitive Provision of Utility Services
(P.A.  90-561).  P.A.  90-561  gives  IP's  residential  customers  a 15 percent
decrease in base electric  rates  beginning  August 1, 1998, and an additional 5
percent  decrease  effective on May 1, 2002.  The rate decreases are expected to
result in revenue reductions of approximately $40 million in 1998, approximately
$80  million  in each of the years  1999  through  2001 and  approximately  $100
million in 2002,  based on current  consumption.  Customers  with demand greater
than 4 MW at a single  site will be free to  choose  their  electric  generation
suppliers ("direct access") starting in October 1999. Customers with at least 10
sites  which  aggregate  at least 9.5 MW in total  demand  also will have direct
access starting  October 1999.  Direct access for the remaining  non-residential
customers  will occur in two phases:  customers  representing  one-third  of the
remaining  load in the  non-residential  class in  October  1999  and  customers
representing  the entire  remaining  non-residential  load on December 31, 2000.
Direct  access will be available to all  residential  customers in May 2002.  IP
remains obligated to serve all customers who continue to take service from IP at
tariff  rates,  and  remains  obligated  to provide  delivery  service to all at
regulated  rates.  In 1999,  rates for delivery  services will be established in
proceedings mandated by the legislation.

     Although the specified  residential rate reductions and the introduction of
direct  access will lead to lower  electric  service  revenues,  P.A.  90-561 is
designed to protect the  financial  integrity  of  electric  utilities  in three
principal ways:

1)   Departing customers are obligated to pay transition  charges,  based on the
     utility's lost revenue from that  customer.  The  transmission  charges are
     calculated by  subtracting  from a customer's  fully bundled rate an amount
     equal to a) delivery  charges the utility will continue to receive from the
     customer,  b) the market  value of  freed-up  energy,  and c) a  mitigation
     factor,  which is the higher of a fixed rate per Kwh or a percentage of the
     customer's  bundled base rate. The mitigation factor is designed to provide
     incentive for  management to continue cost  reduction  efforts and generate
     new sources of revenue;

2)   Utilities are provided the opportunity to lower their financing and capital
     costs through the issuance of "securitized" bonds, also called transitional
     funding instruments; and

3)   Utilities are permitted to seek rate relief in the event that the change in
     law leads to their return on equity falling below a specified minimum based
     on a prescribed test. Utilities are also subject to an "over-earnings" test
     which requires them, in effect, to share with customers  earnings in excess
     of specified levels.

      The  extent  to which  revenues  are  lowered  will  depend on a number of
factors including future market prices for wholesale and retail energy, and load
growth and demand levels in the current IP service territory.  The impact on net
income will depend on, among other things, the amount of revenues earned and the
ongoing costs of doing business.




                                       12
<PAGE>




     On June 26,  1998,  the  Company  filed an  application  with the  Illinois
Commerce  Commission  (ICC) seeking approval for  securitization  bonds totaling
$864 million.  This represents 25% of the company's  capitalization  at December
31, 1996 as allowed by the 1997  Electric  Utility  Transition  Funding law. The
proceeds  from  these  bonds  will be used to  lower  IP's  cost of  capital  by
repurchasing  stock and retiring  debt.  The ICC's staff issued its  preliminary
comments on IP's application on July 22, and there were no major issues with the
filing.  The  Hearing  Examiner's  Proposed  Order will be issued in late August
1998,  and the ICC should issue its final order by September 22. A 30 day period
follows for any final  rehearing  requests.  If none are  received,  the Company
intends to proceed with issuance of the bonds  subject to receiving  appropriate
IRS ruling.

     In January 1998,  IP, in conjunction  with eight other  transmission-owning
entities,  filed with the Federal Energy  Regulatory  Commission  (FERC) for all
approvals necessary to create and implement the Midwest Independent Transmission
System Operator, Inc. (MISO). The goals of this joint undertaking are to: 1) put
in place a tariff  allowing easy and  nondiscriminatory  access to  transmission
facilities in a  multi-state  region,  2) enhance  regional  reliability  and 3)
establish an entity that operates  independently of any transmission owner(s) or
other  market  participants,   thus  furthering  competition  in  the  wholesale
generation  market  consistent  with the objectives of the FERC's Order No. 888.
Since January 1998, four other transmission-owning entities joined the MISO. The
parties are seeking to make the MISO operational by January 1, 2000.

      ACCOUNTING MATTERS

     Prior to the passage of P.A. 90-561, IP prepared its consolidated financial
statements in accordance with Statement of Financial  Accounting Standards (FAS)
71, "Accounting for the Effects of Certain Types of Regulation." Reporting under
FAS 71 allows  companies  whose service  obligations and prices are regulated to
maintain  on their  balance  sheets  assets  representing  costs they  expect to
recover from customers,  through  inclusion of such costs in their future rates.
In July 1997, the Emerging Issues Task Force (EITF)  concluded that  application
of FAS 71  accounting  should  be  discontinued  at the  date  of  enactment  of
deregulation  legislation for business segments for which a plan of deregulation
has been  established.  The EITF further  concluded that  regulatory  assets and
liabilities  that  originated in the portion of the business  being  deregulated
should be written off unless their recovery is specifically provided for through
future cash flows from the regulated portion of the business.

      Because P.A. 90-561 provides for future  market-based  pricing of electric
generation  services,  IP discontinued  application of FAS 71 for its generating
segment. IP evaluated its regulatory assets and liabilities  associated with its
generation  segment and determined that recovery of these costs was not probable
through rates charged to transmission and distribution customers,  the regulated
portion of the business.

      IP wrote off  generation-related  regulatory  assets  and  liabilities  of
approximately  $195 million (net of income  taxes) in December  1997.  These net
assets  related to previously  incurred costs that were expected to be collected
through future revenues,  including deferred costs for the Clinton Power Station
(Clinton),  unamortized losses on reacquired debt, previously recoverable income
taxes and other generation-related regulatory assets. At June 30, 1998, IP's net
investment  in  generation  facilities  was $3.2  billion and was  reflected  in
"Utility Plant, at Original Cost" on IP's balance sheet.


                                       13
<PAGE>
      

     In May 1998,  the Staff of the  Securities  and Exchange  Commission  (SEC)
issued interpretive guidance regarding the application of Statement of Financial
Accounting  Standards  No. 121,  "Accounting  for the  Impairment  of Long-Lived
Assets to Be Disposed Of (SFAS  121),"  when a regulated  enterprise  such as an
electric  utility  discontinues  regulatory  accounting  practices for separable
portions of its  operations  and assets.  Under SFAS 121,  assets are considered
impaired,  and should be written down to fair value,  if their  projected  gross
future  cash  flows  are  insufficient  to  recover  their  carrying  value.  IP
discontinued  the  application of regulatory  accounting  principles in December
1997 for the  generation  portion  of its  business  and  performed  an SFAS 121
impairment  analysis that  concluded that gross future cash flows expected to be
generated by electric  supply  service  assets will be  sufficient  to cover the
costs of its  generating  assets.  As a result of the SEC's recent  interpretive
guidance,  IP reviewed its impairment  evaluation and again concluded that gross
future cash flows  expected to be generated by electric  supply  service  assets
will be  sufficient  to cover  the  costs  of its  generating  assets.  However,
ultimate  recovery of the cost of the Company's  generating  assets depends on a
number of factors and variables  including  future market prices of  electricity
and IP's  ability to  operate  its  generation  assets  efficiently.  Changes in
projected  future operating  conditions could result in significantly  different
conclusions with respect to impairment of the Company's generating assets.

      The provisions of P.A.  90-561 allow an  acceleration in the rate at which
any utility-owned  assets are expensed without regulatory approval provided such
charges are consistent with generally accepted accounting principles. Under this
legislation,  up to an aggregate of $1.5 billion in  additional  expense for the
generation-related assets could be accelerated through the year 2008. The amount
of expense  accelerated  through the year 2008 is  contingent  on the changes in
revenue  resulting from P.A. 90-561,  cost mitigation  efforts,  fuel costs, and
changes in the cost of  capital  resulting  from the  issuance  of  transitional
funding  instruments.  Any  such  reduction  in  the  net  book  value  of  IP's
generation-related  assets would help position IP to operate  competitively  and
profitably in the changing business  environment.  This accelerated charge would
have a direct impact on earnings but not on cash flows.

      The Financial  Accounting Standards Board (FASB) issued FAS 128, "Earnings
Per Share (EPS)" in February  1997,  effective for financial  statements  issued
after  December  15, 1997.  FAS 128  establishes  standards  for  computing  and
presenting  EPS and replaces the  presentation  of primary EPS and fully diluted
EPS with a presentation  of basic EPS and diluted EPS,  respectively.  Basic and
diluted earnings per share are equivalent for Illinova and IP at June 30, 1998.

      The FASB issued FAS 130,  "Reporting  Comprehensive  Income" in June 1997,
effective  for  fiscal  years   beginning  after  December  15,  1997.  FAS  130
establishes  standards for reporting and display of comprehensive income and its
components in a financial  statement that is displayed with the same  prominence
as other financial statements. Illinova and Illinois Power do not currently have
any components of comprehensive income in any period presented herein.  Illinova
and Illinois Power will continue to analyze the disclosure  requirements  of FAS
130.

                                       14
<PAGE>


      The FASB issued FAS 131,  "Disclosures about Segments of an Enterprise and
Related  Information"  in June  1997,  effective  for  periods  beginning  after
December 15, 1997. FAS 131 supersedes FAS 14, "Financial  Reporting for Segments
of a Business  Enterprise."  FAS 131  establishes  standards  for the way public
business  enterprises  report financial and descriptive  information about their
reportable  operating  segments  in  their  financial   statements.   Generally,
financial  information is required to be reported on the same basis that is used
internally  for  evaluating  segment  performance  and  deciding how to allocate
resources to segments. Illinova and Illinois Power are evaluating the provisions
of FAS 131 to determine  the impact of the revised  disclosure  requirements  on
their 1998 financial statements.

      The FASB issued FAS 132, "Employers'  Disclosures about Pensions and Other
Postretirement  Benefits" in February 1998, effective for fiscal years beginning
after  December  15, 1997.  FAS 132 amends FAS 87,  "Employers'  Accounting  for
Pensions" and FAS 106, "Employers' Accounting for Postretirement  Benefits Other
Than Pensions".  FAS 132 revises employers'  disclosures about pension and other
postretirement  benefit plans but does not change the measurement or recognition
of those plans.

      The FASB  issued  FAS 133,  "Accounting  for  Derivative  Instruments  and
Hedging  Activities" in June 1998. FAS 133  supersedes FAS 80,  "Accounting  for
Futures  Contracts",   FAS  105,  "Disclosure  of  Information  about  Financial
Instruments  with  Off-Balance   Sheet  Risk  and  Financial   Instruments  with
Concentrations  of  Credit  Risk,  and FAS  119,  "Disclosure  about  Derivative
Financial  Instruments  and  Fair  Value  of  Financial  Instruments".  FAS  133
establishes  accounting  and  reporting  standards for  derivative  instruments,
including certain derivative  instruments  embedded in other contracts,  and for
hedging activities. FAS 133 requires that an entity recognize all derivatives as
either assets or liabilities in the statement of financial  position and measure
those  instruments  at fair value.  FAS 133 is effective for Illinova's and IP's
financial  statements  beginning  in the year 2000.  Illinova and IP continue to
evaluate  the  provisions  of FAS 133 to  determine  the  impact of the  revised
accounting and disclosure  requirements on their financial  statements beginning
in the year 2000.  The  Company's  1998  financial  statements  will contain the
disclosures required by this standard.

     On July 23,  1998  the EITF of the  Financial  Accounting  Standards  Board
(FASB) met to discuss Issue No. 98-10:  "Accounting  for Energy Trading and Risk
Management  Activities."  This issue  addresses  (1)  whether  certain  types of
contracts  for the sale and purchase of energy  commodities  should be marked to
market (i.e., as trading activities, derivatives, or when adopted, accounted for
in accordance  with FAS 133) or accounted for under  accrual  accounting  (i.e.,
recorded as the  contracts  are settled with  accruals  established  if and when
losses on such contracts become probable and estimable), and (2) how the results
of such  activities  should be displayed  in the  financial  statements.  In the
discussion,  EITF members  tentatively agreed that sale and purchase  activities
being performed need to be classified as either trading or non-trading. Further,
the EITF reached a tentative conclusion that in the case where the activities of
an entity  are  determined  to be trading in nature,  the  current  practice  of
accrual or  settlement  accounting  would not be  appropriate.  The EITF did not
reach a tentative  conclusion on the  definition  of "trading."  Both IP and IEP
enter  contracts  for the sale  and  purchase  of  energy  commodities  and each
practices accrual accounting.  Should any of the activities carried out by IP or
IEP  ultimately  meet the EITF's  definition  of trading  activities  it appears
likely that a change in those entities'  accounting  practices will be required.
The ultimate  impact of this change in accounting on the Financial  Position and
Results of  Operations  of Illinova and IP can not  immediately  be  determined,
however  such  impact  may be  significant.  The  EITF is  scheduled  to  resume
discussion of the issue in September 1998.

                                       15
<PAGE>




      MANUFACTURED GAS PLANT SITES

      IP's estimated liability for Manufactured Gas Plant (MGP) site remediation
is $61.1 million.  This amount represents IP's current best estimate of the cost
that it will incur to  remediate  the 24 MGP sites for which it is  responsible.
Because of the  unknown  and  unique  characteristics  at each  site,  IP cannot
presently determine its ultimate liability for remediation of the sites.

      In  October  1995,  to offset  the burden  imposed  on its  customers,  IP
initiated  litigation against a number of insurance  carriers.  As of June 1998,
settlements or settlements in principle have been reached with all thirty of the
carriers.  Settlement  proceeds  recovered  from  the  carriers  will  offset  a
significant  portion of the remediation  costs and will be credited to customers
through  the  tariff  rider  mechanism  which the ICC has  previously  approved.
Management  expects that cleanup  costs in excess of insurance  proceeds will be
fully recovered from IP's transmission and distribution customers.



PREFERRED STOCK VOTE

     Illinois Power sought approval from preferred stockholders for an amendment
of the IP Articles of Incorporation to remove a restriction  limiting the amount
of  unsecured  debt to not  more  than  20% of  total  capitalization  excluding
unsecured  debt.  Preferred  shareholders  of  record  as of April 6,  1998 were
entitled and solicited to vote on this matter at a special  meeting of IP common
and preferred  shareholders  scheduled May 29, 1998. At the May 29 meeting,  the
proxy tabulator determined that an insufficient number of shareholders had voted
to remove the limit. A majority of the votes cast were in favor of the proposal,
but not the 66 2/3 percent  required for  adoption.  See Item 4  "Submission  of
Matters to a Vote of Security Holders" for tabulated results of the Proxy Vote.





TREASURY STOCK

      Through June 30, 1998, IP has  purchased a total of  10,493,375  shares of
its common stock from Illinova,  all of which are held as treasury stock and are
deducted  from  common  equity at the cost of the  shares  purchased.  1,064,730
shares of IP common stock were purchased during the first six months of 1998.




                                       16
<PAGE>





             ILLINOVA CORPORATION AND ILLINOIS POWER COMPANY

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

      This report  contains  estimates,  projections  and other  forward-looking
statements  that involve  risks and  uncertainties.  Actual  results or outcomes
could differ materially from those provided in the forward-looking statements as
a result  of such  important  factors  as:  the  outcome  of state  and  federal
regulatory  proceedings  affecting  the  restructuring  of the  electric and gas
utility industries;  the impacts of new laws and regulations on Illinova and its
subsidiaries relating to restructuring,  environmental,  and other matters ; the
effects of increased competition on the utility businesses;  risks of owning and
operating  a  nuclear  facility;  changes  in prices  and cost of fuel;  factors
affecting non-utility investments, such as the risk of doing business in foreign
countries;  construction  and operation risks; and increases in financing costs.
All forward-looking  statements are based upon information  presently available,
and Illinova assumes no obligation to update any forward-looking statements.

      Reference is made to the Notes to the  Consolidated  Financial  Statements
and Management's  Discussion and Analysis of Financial  Condition and Results of
Operations presented in Illinova's 1997 Annual Report to Shareholders  (included
in the Proxy Statement),  the Consolidated Financial Statements and Management's
Discussion  and  Analysis  of  Financial  Condition  and  Results of  Operations
presented  in  IP's  1997  Annual  Report  to  Shareholders   (included  in  the
Information  Statement),  and  Illinova's  and IP's Form 10-K for the year ended
December  31, 1997 and  Illinova's  and IP's Report on Form 10-Q for the quarter
ended March 31, 1998, and Illinova's and IP's 1998 Form 8-K filings.

ILLINOVA SUBSIDIARIES

      IP, a subsidiary  of Illinova,  engages in the  generation,  transmission,
distribution  and sale of electric energy and the  distribution,  transportation
and sale of  natural  gas in the  State of  Illinois.  IP has  preferred  shares
outstanding to the public but its common stock is wholly-owned by Illinova.

      IGC is a wholly-owned independent power subsidiary of Illinova and invests
in energy supply projects  throughout the world.  IGC's strategy is to invest in
and develop  "greenfield" power plants,  acquire existing generation  facilities
and provide power plant operations and maintenance services.

      IEP is a  wholly-owned  subsidiary  of Illinova.  IEP develops and markets
energy-related  services to the unregulated  energy market throughout the United
States and engages in the brokering and marketing of electric power and gas.

      IIC is a wholly-owned subsidiary of Illinova and was licensed by the State
of Vermont as a captive  insurance  company.  The primary  business of IIC is to
insure certain risks of Illinova and its subsidiaries.

     IBE is a wholly-owned subsidiary of Illinova and was created to account for
miscellaneous  business  activities not regulated by the ICC or the FERC and not
falling within the business scope of other Illinova subsidiaries.


                                       17
<PAGE>

LIQUIDITY AND CAPITAL RESOURCES
      CAPITAL RESOURCES AND REQUIREMENTS

      Cash flows from  operations  during the first six months of 1998  provided
sufficient  working capital to meet ongoing operating  requirements,  to service
existing common and IP preferred stock dividends and debt  requirements  and the
majority of IP's  construction  requirements.  IP used short term  borrowings to
meet interim cash requirements.  Additionally, Illinova expects to use 1998 cash
flows  supplemented  by external  financing to meet operating  requirements  and
continue to service  IP's and  Illinova's  existing  debt,  IP's  preferred  and
Illinova's  common stock dividends,  IP's sinking fund requirements and IP's and
Illinova's anticipated  construction  requirements.  IP periodically repurchases
shares  of  its  common  stock  from  Illinova  to  provide  Illinova  cash  for
operations,   in  accordance  with  authority  granted  by  the  ICC.  For  more
information,  see  "Treasury  Stock"  of the  "Notes to  Consolidated  Financial
Statements" on page 16 of this report.

      IP's capital requirements for construction were approximately $115 million
and  $68  million   during  the  six  months  ended  June  30,  1998  and  1997,
respectively.

     On January 28, 1998, Illinova issued $40 million of 6.46% medium-term notes
due October 1, 2002 under an existing $300 million shelf registration statement.
Illinova  currently has  authority to issue an  additional  $160 million in debt
securities  under this shelf  registration  statement to meet its  operating and
investment  needs.  This  capacity is expected  to meet  Illinova's  anticipated
requirements   through  the  first  quarter  of  1999.  Illinova  is  developing
additional financial capabilities to meet future needs.

     IP  issued a  redemption  notice  for all  outstanding  bonds of its  6.00%
Pollution  Control First Mortgage  Bonds due 2007 ($18.7  million) and its 8.30%
Pollution  Control First  Mortgage Bonds due 2017 ($33.8  million).  Both series
were called April 1, 1998.  On March 6, 1998,  IP issued $18.7  million of 5.40%
Pollution  Control  Mortgage Bonds due 2028 and $33.8 million of 5.40% Pollution
Control  Mortgage  Bonds  due  2028.  On May 8,  1998,IP  filed  an SEC Form S-3
registration for a $200 million debt shelf authorization. This debt shelf became
effective  May 27,  1998.  On July 21,  1998,  IP issued  $100  million of 6.25%
Mortgage  Bonds due 2002 against the debt shelf  registration.  IP also plans to
issue  $100  million  of bonds in the  third  quarter  1998.  IP  currently  has
authority to issue an additional $100 million in new debt  securities  under its
existing shelf registration statement. In addition, IP currently has total lines
of credit represented by bank commitments of $354 million.

      Presently,  IP's mortgage bonds are rated Baa1 by Moody's,  BBB+ by Duff &
Phelps,  and BBB by  Standard & Poor's.  IP's  preferred  stock is rated Baa2 by
Moody's and BBB- by both Duff & Phelps and Standard & Poor's.  Illinova's senior
and medium-term  notes have a rating of Baa3 from Moody's and BBB- from Standard
& Poor's.  On July 6, 1998,  a change in outlook  was issued.  The outlook  from
Moody's  changed from stable to negative and the outlook from  Standard & Poor's
changed from positive to stable.


ACCOUNTING MATTERS

      For further  information on accounting  issues,  see "Accounting  Matters"
under  "Regulatory  and Legal Matters" of the "Notes to  Consolidated  Financial
Statements" on pages 13-15 of this report.


                                       18
<PAGE>

CLINTON POWER STATION

      In  September  1996,  a  leak  in a  recirculation  pump  seal  caused  IP
operations personnel to shut down Clinton. Clinton has not resumed operation.

      In January 1997 and again in June 1997, the Nuclear Regulatory  Commission
(NRC) named  Clinton among plants  having a trend of declining  performance.  In
June 1997,  IP committed to conduct an  Integrated  Safety  Assessment  (ISA) to
thoroughly assess Clinton's  performance.  The ISA was conducted by a team of 30
individuals  with  extensive  nuclear  experience  and no  substantial  previous
involvement at Clinton.  Their report concluded that the underlying  reasons for
the performance problems at Clinton were ineffective  leadership  throughout the
organization in providing  standards of excellence,  complacency  throughout the
organization,  barrier weaknesses and weaknesses in teamwork. In late October, a
team  commissioned  by the NRC  performed  an  evaluation  to  validate  the ISA
results.  In  December,  this  team  concluded  that  the  findings  of the  ISA
accurately characterized Clinton's performance deficiencies and their causes.

      On  January  5, 1998,  IP and PECO  Energy  Company  (PECO)  announced  an
agreement  under  which  PECO will  provide  management  services  for  Clinton.
Although a PECO team will help  manage the plant,  IP will  continue to maintain
the operating  license for Clinton and retain  ultimate  oversight of the plant.
PECO  employees  have assumed  senior  positions at Clinton,  but the plant will
remain  primarily  staffed by IP  employees.  IP made this  decision  based on a
belief that  bringing in PECO's  experienced  management  team would be the most
efficient way to get Clinton back on line and  operating at a superior  level as
quickly as possible.

      On January 21, 1998,  the NRC placed  Clinton on its Watch List of nuclear
plants  that  require  additional  regulatory  oversight  because  of  declining
performance.  Twice a year the NRC  evaluates the  performance  of nuclear power
plants in the United  States  and  identifies  those  which  require  additional
regulatory  oversight.  Once placed on the Watch List, a plant must  demonstrate
consistent  improved  performance  before it is removed from the list. The Watch
List  issued on July 29,  1998  still  included  Clinton.  The NRC will  monitor
Clinton  more  closely  than  plants  not on the Watch  List.  This may  include
increased inspections, additional required documentation,  NRC-required approval
of processes and procedures, and higher-level NRC oversight.

      On February 19, 1998, IP filed Clinton's  Summary Plan for Excellence with
the NRC. The Plan for Excellence  provides a comprehensive set of strategies and
associated actions necessary to improve performance,  permit safe restart of the
plant and achieve  excellence  in  operations.  IP is  implementing  the actions
required prior to plant restart.  This  recovery/restart  program to get Clinton
back online is going through a formal parallel review process by the NRC.

      The NRC has advised IP that it must submit a written  report to the NRC at
least two weeks  prior to  restarting  Clinton,  giving  the  agency  reasonable
assurance  that IP's actions to correct  recurring  weaknesses in the corrective
action program have been effective. After the report is submitted, the NRC staff
plans to meet with IP's management to discuss the plant's readiness for restart.

     Clinton is expected to return to operation by the end of 1998. IP currently
expects  Clinton's  1998 operating and  maintenance  expenses to be at least $73
million more than Clinton's 1997 expenses,  totaling  approximately $195 million
for 1998.



                                       19
<PAGE>


      The prolonged  outage at Clinton is having an adverse effect on Illinova's
and IP's financial  condition,  through  higher  operating and  maintenance  and
capital costs, lost  opportunities to sell energy,  and replacement power costs.
The  magnitude  of these  costs and lost  opportunities  is  unknown  because of
uncertainty  regarding the timing of Clinton's  return to service,  the ultimate
cost of restart and uncertain market conditions.  Previously  disclosed earnings
expectations are subject to the effects of these uncertainties and changes.


REGULATORY MATTERS

      RATE REDUCTION FILING

      IP  submitted  written  filings  with the ICC in June  1998 to  begin  the
process of implementing a 15 percent residential rate reduction effective August
1, 1998. On July 22, 1998, IP filed a plan with the ICC for a one time reduction
in residential and small commercial  customers'  electric bills of approximately
7.5  percent  for  the  month  of  August  in   consideration  of  their  energy
conservation  efforts this summer.  The reduction  will be in addition to the 15
percent  residential  rate reduction  that will be effective  August 1, 1998 and
will have the effect of  beginning  the 15  percent  residential  electric  rate
reduction two weeks earlier than the scheduled August 1, 1998 start date.

      ATTORNEY GENERAL COMPLAINT

     On July  17,  1998,  a  complaint  against  IP was  filed at the ICC by the
Illinois  State  Attorney  General.  The complaint  alleges that Illinois  Power
failed to meet its  statutory  obligations  to  provide  adequate  and  reliable
service in connection with this summer's  electric supply situation (for further
disclosure,  see "Power Supply and Reliability" on pages 23-24). It asks the ICC
to conduct a  management  audit of IP and seeks an order  requiring  IP to offer
compensation to customers for voluntary  conservation and service interruptions.
The Company believes it can effectively defend itself against these allegations,
however, the outcome at this point is uncertain.




      SOYLAND POWER COORDINATION AGREEMENT

      The FERC approved an amended Power  Coordination  Agreement  (PCA) between
Soyland and IP in July 1997. Under the amended PCA, Soyland is allowed to prepay
an Elected Capacity Reduction Fee associated with a unilateral  reduction in its
base capacity charge under the PCA. In December 1997, Soyland signed a letter of
intent to pay in advance the remainder of its base capacity  charges in the PCA.
Soyland  obtained the necessary  financing and regulatory  approvals  during the
second  quarter of 1998.  During  the first  quarter of 1998,  IP  received  $30
million  from  Soyland and the  remaining  $40 million was  received  during the
second quarter of 1998. The prepayment has been deferred and is being recognized
as interchange  revenue over the initial term of the PCA which is from September
1, 1996 through August 31, 2006.


                                       20
<PAGE>

UNIFORM FUEL ADJUSTMENT CLAUSE

      Previously,  IP's rate schedules contained  provisions for passing through
to its electric customers  increases or decreases in the cost of energy provided
to its  native  load  customers  under the UFAC.  Such costs  included  fuel and
allowable fuel  transportation  costs,  emission allowance costs, DOE spent fuel
disposal  fees and costs of power  purchased to serve native load.  However,  on
March 6, 1998, IP made the ICC filing required for elimination of the UFAC. This
established a new base fuel cost recoverable in IP's electric tariffs  effective
on the date of the filing. As provided in P.A. 90-561, the new base fuel cost is
1.287 cents per kwh,  which is equal to 91 percent of IP's  average  prudent and
allowable fuel and purchased power supply costs in the two most recent years for
which  the ICC has  approved  the  level  of  recovery.  Every  year  UFAC  cost
recoveries are audited by the ICC in a  reconciliation  proceeding in which they
may be adjusted  upward for actual costs not  recovered,  or downward  through a
disallowance  of costs  incurred.  By  opting  out of the  UFAC,  IP  eliminated
exposure for potential  disallowed  fuel and  purchased  power costs for periods
after  December 31, 1996,  as those years will no longer be subject to the ICC's
annual reconciliation proceeding. This change will prevent IP from automatically
passing  through  increases  in  cost  and  will  expose  IP to  the  risks  and
opportunities of price  volatility in the  marketplace.  Whether electric energy
costs will continue to be recovered in revenues from  customers will depend on a
number of factors, including the number of customers served, demand for electric
service, and changes in fuel cost components. These variables may be influenced,
in turn,  by market  conditions,  availability  of generating  capacity,  future
regulatory proceedings, and environmental protection costs, among other things.

      DEREGULATION RULEMAKINGS AND TARIFFS

      As a result of P.A. 90-561,  ICC rulemakings are underway  covering issues
such as affiliated  interests and  reliability.  These  regulatory  proceedings,
alone or in combination, could significantly impact how the Company operates and
is  organized,  but they are not likely to have a material  impact on  financial
results.

      Under the new rules,  Illinois  utilities  must keep  records  identifying
service interruptions experienced by each customer. Illinois utilities must also
file an annual report  detailing the  reliability  of its service and explaining
its plans for  reliability  improvements.  In  addition,  each utility must also
report the number  and causes of service  interruptions  that were due to causes
within the utility's  control.  Outage targets were  established  for service to
individual customers and for system performance.


      OPEN ACCESS AND COMPETITION

      See "Open Access and Competition"  under "Regulatory and Legal Matters" of
the "Notes to Consolidated  Financial  Statements" on pages 12-13 of this report
for additional information.




YEAR 2000 DATA PROCESSING

      In November  1996,  Illinova  deployed a project  team to  coordinate  the
identification,  evaluation,  and  implementation of changes to computer systems
and applications necessary to achieve a year 2000 date conversion with no effect
on customers or disruption to business operations.


                                       21
<PAGE>

     These  actions are necessary to ensure that systems and  applications  will
recognize  and  process  coding  for the year 2000 and  beyond.  Major  areas of
potential business impact have been identified.  Illinova has inventoried 95% of
its systems. Assessment of systems and processes is 87% complete and expected to
be fully completed by October 1998. Implementation efforts are approximately 20%
complete.  Illinova also is  communicating  with third parties with whom it does
business to facilitate continued business operations.

     The cost of achieving year 2000  compliance is estimated to be at least $19
million  through  1999.  The cost  expended as of July 31, 1998 is $4.3 million.
Contingency  plans for  operating  without  year 2000  compliance  have not been
developed. Such activity is expected to begin in the fourth quarter of 1998, but
exact  timing will depend on  assessment  of  progress.  Project  completion  is
planned for the fourth quarter of 1999.

     If Illinova or critical  interfacing  third  parties' year 2000 efforts are
unsuccessful,  some or all of Illinova's  commercial and operational  activities
could be  interrupted  for an  indefinite  time.  In addition to monetary  loss,
equipment could be damaged and public safety impaired.  It is uncertain  whether
such damage would be catastrophic  or minimal.  It is impossible to assess third
party performance beyond Illinova's control.



ENVIRONMENTAL MATTERS


      GAS MANUFACTURING SITES

     See  "Manufactured Gas Plant Sites" under "Regulatory and Legal Matters" of
the "Notes to Consolidated Financial Statements" on page 16 of this report.



      NITROGEN OXIDE

      Regulators are continuing to examine  potential  approaches for compliance
with current federal ozone air quality standards.  On November 7, 1997, the U.S.
EPA proposed air pollution rules which would require  substantial  reductions of
NOx  emissions in Illinois and 21 other states.  The proposal  would require the
installation  of NOx controls by September 2002. This proposal is expected to be
finalized  by  November  1998  with  Illinois  utility  reduction   requirements
specified in 1999.  Preliminary  cost  estimates to comply with the proposed NOx
limitations  are $130 to $150  million  beyond what is already  needed to comply
with the NOx requirements of Phase II of the Acid Rain Program.  The legality of
this proposal along with its technical  feasibility is expected to be challenged
by a number of utilities and utility groups, including IP.

      In  June,  1998,  thirteen   Southeast/Midwest  states  submitted  letters
advocating the need for a more reasonable  approach to NOx reductions than those
proposed by USEPA. The state proposals would target specific causes of pollution
rather than broad regional  emission  reductions,  mandate less severe  emission
reductions and give sources more time to achieve those  reductions.  The overall
objective  of these  proposals  is to provide  cleaner  air  without the adverse
economic  consequences of USEPA's  proposal.  USEPA will consider these comments
prior to  finalizing  the  State  Implementation  Plan  (SIP)  Call  (the  USEPA
regulatory process for state compliance)in late 1998.


                                       22
<PAGE>

GLOBAL WARMING

      On December 11, 1997, international  negotiations to reduce greenhouse gas
emissions  concluded  with the  adoption of the Kyoto  Protocol.  This  Protocol
requires the United States to reduce  greenhouse  gas emissions to 7% below 1990
levels  during  the  years  2008  through  2012 and to make  further  reductions
thereafter.  This Protocol must be ratified by the United States Senate.  United
States Senate  Resolution 98 (passed 95-0) indicates the Senate would not ratify
an  agreement  that fails to involve all  countries  or would  damage the United
States economy.  Ratification will be a major political issue since the Protocol
does not contain key elements that Senate  Resolution 98 said would be necessary
for ratification. It is anticipated that ratification will not occur in 1998.

      IP will face major  changes in how it generates  electricity  if the Kyoto
Protocol is ratified, or if the Protocol's reduction goals are incorporated into
other environmental regulations.  IP would have to repower some generating units
and change  from coal to natural  gas in other  units to reduce  greenhouse  gas
emissions.  IP estimates that  compliance  with these proposed  regulations  may
require  significant  capital outlays and annual operating  expenses which could
have a material adverse impact on Illinova and IP.





POWER SUPPLY AND RELIABILITY

      Electricity  has been in short supply  throughout  Illinois and  Wisconsin
this summer because of an unusually high number of plant outages in this region.
IP is  attempting to secure  generation  and  transmission  capacity in order to
guard against  disruptions in service. If the weather continues to be abnormally
hot or if IP's  major  generating  units  were  to  require  maintenance  and/or
experience  delay in  returning  to  service,  IP may be unable  to meet  demand
because of the limited  availability  of power in the region and limited ability
to import power. IP has taken  additional  steps to avoid  potential  shortages,
including inspecting and upgrading transmission lines and equipment and readying
emergency  procedures.  Expenses  which  have been  incurred  as a result of the
summer situation have had a material adverse impact on Illinova and IP.



      IP experienced  unprecedented  and unexpected  prices for power  purchases
during  the last week of June  1998.  Replacement  power  costs  for the  second
quarter of 1998 were $49 million  higher than the second quarter of 1997 and $55
million higher through June 1998 as compared to 1997. In addition,  during June
1998 IP  recorded  an accrual  of $58.3  million  for  probable  and  reasonably
estimable  losses on power sales  commitments  with scheduled third quarter 1998
delivery dates.  The ultimate amount of 1998 losses  associated with power sales
commitments  and lost  margin on sales to native  load  customers  will  largely
depend on factors  influencing  the price of  purchased  power such as  regional
weather,  regional generation  capacity,  market conditions including prices and
liquidity, generation and transmission availability as well as factors affecting
IP's generating and transmission  capacity. In addition, IP is subject to future
price and capacity risk related to electric power supply contracts for the years
1999 and 2000. The ultimate  financial  impact of these contracts will depend on
market conditions and IP's system  availability.  IP will continue to review its
accounting  treatment of these  commitments as further guidance is issued by the
EITF regarding  issue 98-10,  "Accounting for Energy Trading and Risk Management
Activities".  See  discussion  of EITF 98-10 under  "Accounting  Matters" in the
"Notes To Consolidated Financial Statements" on pages 13-15.

                                       23
<PAGE>

      On July 7, 1998,  IP testified  before the ICC and July 8, 1998 before the
Environment and Energy Committee of the Illinois House of  Representatives  with
regard to the  electric  supply  problems of late June and IP's supply plans for
the rest of the summer.  IP stated it was monitoring power plant maintenance and
transmission  system  preparation.  Additionally,  IP talked about re-activating
five oil-fired generating units at Havana Station. Those units, placed into cold
shutdown in January  1994,  could  provide up to 250  megawatts  of power if all
could be made  operational.  IP is working to restore and restart Units 3, 4 & 5
by August, 1998 which will supply 150 megawatts of power.





                                       24
<PAGE>

RESULTS OF OPERATIONS

               THREE MONTHS ENDED JUNE 30, 1998 AND 1997

     Electric  Operations  - Electric  revenues  for the second  quarter of 1998
increased  $2.8  million  compared to the second  quarter of 1997 due largely to
increased sales to residential and commercial  customers.  Electric  interchange
revenues  increased  $59.2 million  primarily  due to increased  activity on the
interchange market. Power purchased increased $183.8 million due largely to near
record temperatures and regional power supply shortages which resulted in higher
than expected power supply costs. Second quarter 1998 figures include an accrual
of  approximately  $58.3  million  for known and  probable  loss on power  sales
commitments  with scheduled third quarter  delivery  dates.  During the quarter,
fuel for electric plants  increased $1.7 million due primarily to an increase in
generation.  For more  information,  see "Uniform  Fuel Cost  Adjustment"  under
"Regulatory Matters" of the "Management's Discussion and Analysis" on page 21 of
this  report  and  "Power  Supply  and  Reliability"   under  the  "Management's
Discussion  and  Analysis" on pages 23-24.  These  factors  combined to decrease
electric margin $123.5 million for the quarter.

      Kilowatt  hour (kwh) sales to ultimate  consumers  increased  4.0% for the
quarter due to increases of 17.4% and 8.2% in the residential and the commercial
markets,  respectively.  Cooling degree days increased  approximately 91.1% from
1997 which  contributed  to the  increase in sales to the  temperature-sensitive
markets.

      For the second  quarters of 1998 and 1997,  Clinton was unavailable due to
the continued outage which began September 6, 1996. The equivalent  availability
for IP's  coal-fired  plants was 74.4% and 68.3% for the three months ended June
30,  1998 and 1997,  respectively.  The lower  equivalent  availability  for the
fossil plants in 1997 was primarily due to the fire and subsequent  shut-down of
the Wood River fossil station in December 1996.

      Gas Operations - For the quarter,  gas margin decreased $9.9 million.  Gas
revenues  decreased  $10.3  million  reflecting  a 9.4%  decrease in therm sales
(excluding  transport)  caused by the mild spring  weather.  Gas purchased costs
decreased $.4 million due to the lower consumption.

      Operation and Maintenance  Expenses - The 1998 second quarter  increase of
$28.8 million is primarily  due to higher  operating  and  maintenance  expenses
associated with the Clinton  outage.  For more  information,  see "Clinton Power
Station" of the  "Management's  Discussion  and Analysis" on pages 19-20 of this
report.

      Diversified  enterprises  - Due primarily to decreased  sales  activity at
IEP,  diversified  enterprise  revenues  decreased  $47.3 million for the second
quarter  of 1998,  which was  offset by a  decrease  in  diversified  enterprise
expenses of $65.8 million.

      Earnings(Loss)  per  Common  Share - The  earnings  per  common  share for
Illinova  during  the  second  quarter  of  1998  and  1997  resulted  from  the
interaction  of all of the factors  discussed  herein as well as fewer shares of
common stock outstanding.


                                       25
<PAGE>

RESULTS OF OPERATIONS

                SIX MONTHS ENDED JUNE 30, 1998 AND 1997

     Electric  Operations  - Electric  revenues for the first six months of 1998
decreased  $2.8 million  compared to the first six months of 1997 due largely to
decreased sales to residential and commercial customers during the first quarter
of the year.  Electric  interchange  revenues increased $128.9 million primarily
due to increased activity on the interchange  market.  Power purchased increased
$245.1 million due largely to near record temperatures and regional power supply
shortages   which   resulted  in  higher  than  expected   power  supply  costs.
Year-to-date figures include an accrual of approximately $58.3 million for known
and  probable  loss on power sales  commitments  with  scheduled  third  quarter
delivery  dates.  During the first six months of 1998,  Fuel for Electric Plants
increased  $12.1  million due primarily to an increase in  generation.  For more
information,  see "Uniform Fuel Cost Adjustment" under  "Regulatory  Matters" of
the "Management's  Discussion and Analysis" on page 21 of this report and "Power
Supply and  Reliability"  under the  "Management's  Discussion  and Analysis" on
pages 23-24.  These factors combined to decrease  electric margin $131.1 million
for the six months ended June 30, 1998.

      Kilowatt hour (kwh) sales to ultimate consumers  remained  relatively flat
for the six months ending June 30, 1998.

      For the six months ended June 30, 1998 and 1997,  Clinton was  unavailable
due to the  continued  outage  which began  September  6, 1996.  The  equivalent
availability  for IP's coal-fired  plants was 76.9% and 69.0% for the six months
ended June 30, 1998 and 1997,  respectively.  The lower equivalent  availability
for the  fossil  plants  in 1997 was  primarily  due to the fire and  subsequent
shut-down of the Wood River fossil station in December 1996.

      Gas  Operations  - For the six  months  ended  June  30,1998,  gas  margin
decreased $23.6 million. Gas revenues decreased $57.7 million reflecting a 15.9%
decrease  in therm  sales  (excluding  transport)  caused by mild  weather.  Gas
purchased costs decreased $34.1 million due to the lower consumption.

      Operation and Maintenance Expenses - The increase for the first six months
of 1998 of $58.5  million is primarily due to higher  operating and  maintenance
expenses associated with the Clinton outage. For more information,  see "Clinton
Power Station" of the  "Management's  Discussion and Analysis" on pages 19-20 of
this report.

      Diversified enterprises - Due primarily to decreased sales activity at IEP
resulting from power supply shortages, diversified enterprise revenues decreased
$59.0  million for the first six months of 1998,  which was offset by a decrease
in diversified enterprise expenses of $79.5 million.

      Earnings(Loss)  per  Common  Share - The  earnings  per  common  share for
Illinova  during  the  second  quarter  of  1998  and  1997  resulted  from  the
interaction  of all of the factors  discussed  herein as well as fewer shares of
common stock outstanding.


                                       26
<PAGE>

PART II.    OTHER INFORMATION

ITEM 1.
      Legal Proceedings

      See  "Notes  to  Consolidated  Financial  Statements"  in  Part  I  for  a
discussion of certain legal proceedings related to manufactured gas plant sites.

      See  "Management's  Discussion and Analysis" in Part I for a discussion of
certain legal proceedings related to regulatory matters.

      Currently, commercial reprocessing of spent nuclear fuel is not allowed in
the U.S. The Nuclear  Waste Policy Act of 1982 (NWPA) was enacted to establish a
government  policy with respect to disposal of spent nuclear fuel and high-level
radioactive  waste.  On June 20, 1994, IP, along with other  utilities and state
utility commissions, filed an action in the D.C. Circuit Court of Appeals asking
the Court to rule that the DOE is  obligated  to take  responsibility  for spent
nuclear fuel by January 31, 1998 under the NWPA.  The utilities  asked the Court
to confirm  the DOE's  commitment  and to order the DOE to develop a  compliance
program with appropriate deadlines. The utilities also asked for relief from the
ongoing funding requirements or to have an escrow account established for future
funds paid to DOE. Subsequently,  the petition was amended to seek, in addition,
relief in the form of specific performance.

      A three-judge  panel ruled in July 1996 that the DOE's  obligation to take
spent  fuel,  by the January  1998 date  specified  in the NWPA,  is binding and
unconditional.  The DOE notified  utilities in December  1996 that it may not be
able to meet the 1998  deadline,  and solicited  utility  suggestions  on how to
accommodate the potential  delay.  In January 1997,  petitions were filed in the
D.C.  Circuit  Court of  Appeals  by IP and other  utilities  and state  utility
commissions,  seeking further enforcement of DOE's obligation.  In response, the
Court has reaffirmed its ruling that the DOE  obligation is  unconditional,  but
has not granted injunctive  relief.  This means that the Court has found the DOE
in breach of DOE's obligation but has not literally  ordered the DOE to perform.
On May 5, 1998,  the court issued another order denying all motions before it on
the basis that the various  requests for relief were either  beyond the scope of
that court's jurisdiction or premature.  This reaffirmed its earlier ruling that
the DOE has an  unconditional  statutory  obligation  to perform,  and  offering
relief if contract  remedies imposed by a different court are inconsistent  with
this statutory duty.

      IP has  on-site  storage  capacity  that will  accommodate  its spent fuel
storage  needs until the year 2007,  based on  operating  levels with Clinton in
production.  If by  that  date  the  DOE has not  complied  with  its  statutory
obligation to dispose of spent fuel,  and IP has continued to operate the plant,
IP will have to use alternative means of disposal,  such as dry storage in casks
on site or  transportation  of the fuel rods to  private  or  collectively-owned
utility  repositories.  IP is  currently  an equity  partner  with  seven  other
utilities in an effort to develop a private  temporary  repository.  Attempts to
reach  agreement  with the  Mescalaro  Apache Tribe of New Mexico ended in early
1996; however,  the group signed a lease in December 1996 with the Goshute Tribe
to use land on its Utah reservation. A spent fuel storage license was filed with
the Nuclear Regulatory Commission (NRC) in 1997, initiating a process which will
take  the NRC up to three  years to  complete.  Continued  participation  in the
partnership  will depend on the  technological  and  economic  viability  of the
project. Safe, dry, on-site storage is technologically  feasible, but is subject
to licensing and local permitting requirements, for which there may be effective
opposition.


                                       27
<PAGE>

ITEM 4.     Submission of Matters to a Vote of Security Holders


      Illinois  Power  sought  approval  from  preferred   stockholders  for  an
amendment of the IP Articles of Incorporation  to remove a restriction  limiting
the  amount  of  unsecured  debt to not more  than  20% of total  capitalization
excluding unsecured debt.  Preferred  shareholders of record as of April 6, 1998
were  entitled and  solicited to vote on this matter at a special  meeting of IP
preferred  shareholders scheduled May 29, 1998. At the May 29 meeting, the proxy
tabulator  determined that an insufficient  number of shareholders  had voted to
remove the limit.

      A majority  of the votes cast were in favor of the  proposal.  However,  a
minimum of 66 2/3  percent of IP's  1,139,110  outstanding  shares of  preferred
stock was required for adoption. The tabulated results of the proxy vote were:

                For            Against           Abstain           No Reply
- --------------------------------------------------------------------------------
DTC             376,431        190,806           76,849             270,842
Registered      125,159          5,697            2,632              90,694
- --------------------------------------------------------------------------------

Total           501,590        196,503           79,481             361,536
Total(%)           44.0%          17.3%             7.0%               31.7%
- --------------------------------------------------------------------------------


ITEM 6.     Exhibits and Reports on Form 8-K

  (a)  Exhibits

       The Exhibits filed with this 10-Q are listed on the Exhibit Index.

  (b) Reports on Form 8-K since June 30, 1998:

            Report filed on Form 8-K on July 6, 1998
                    Other  Events:   Illinova  announces   significantly  higher
                    replacement power costs and lower earnings projections.

            Report filed  on  Form  8-K on  July  15,  1998
                    Other Events: Illinova releases 1998 second quarter earnings
                    and provides earnings outlook for 1998.





                                       28
<PAGE>





                                   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.

                                          ILLINOVA CORPORATION
                                                (Registrant)



                                             /s/ Larry F. Altenbaumer
                                          By ---------------------------
                                             Larry F. Altenbaumer
                                             Chief Financial Officer
                                             Treasurer and Controller
                                             on behalf of
                                             Illinova Corporation







Date: August 13,1998







                                       29
<PAGE>




                                   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.

                                          ILLINOIS POWER COMPANY
                                                (Registrant)



                                             /s/ Larry F. Altenbaumer
                                          By ---------------------------
                                             Larry F. Altenbaumer
                                             Senior Vice President and
                                             Chief Financial Officer
                                             on behalf of
                                             Illinois Power Company







Date: August 13, 1998





                                       30
<PAGE>




                                  EXHIBIT INDEX


                                                       PAGE NO. WITHIN
                                                    SEQUENTIAL NUMBERING
EXHIBIT                DESCRIPTION                         SYSTEM

  12           Statement Re Computation of Ratios

   A              Computation of ratio of earnings              32
                  to fixed charges for Illinova
                  Corporation.

   B              Computation of ratio of earnings              33
                  to fixed charges for Illinois Power.


  27           Financial Data Schedule UT
               (filed herewith)


                                     

                                       31
<PAGE>

<TABLE>
<CAPTION>
                                                                                                           Exhibit 12(A)
                               ILLINOVA CORPORATION
                STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO
                                  FIXED CHARGES
                             (Thousands of Dollars)

                                                                  Six              Twelve            Twelve
                                                              Months Ended      Months Ended      Months Ended
                                                                  June              June             June**
                                 --------------------------------------------------------------------------------
                                                                  1998              1998              1998
                                                                  ----              ----              ----
Earnings Available for Fixed
Charges:
<S>                                                               <C>              <C>                <C>       
Net Income (Loss)                                                 ($24,049)        ($190,033)         ($190,033)
    Add:
      Income Taxes:
         Current                                                     26,309            75,710             75,710
         Deferred -                                                (48,761)          (65,616)           (65,616)
         Net
      Allocated income taxes                                        (7,373)          (16,014)           (16,014)
      Investment tax credit -                                       (3,447)           (7,278)            (7,278)
      deferred
      Income tax effect of FAS 71 write-off                        -                (117,998)          (117,998)
      Interest on long-term debt                                     57,313           114,108            114,108
      Amortization of debt
      expense and
         premium-net, and other interest                             15,229            28,398             28,398
         charges
      One-third of all rentals (Estimated
      to be
         representative of the interest                               2,154             4,067              4,067
         component)
      Interest on in-core fuel                                        1,767             3,807              3,807
      FAS 71 Regulatory                                            -                 -                   313,030
      Write-Offs
                                                             ---------------   ---------------   ----------------
Earnings (loss) available for fixed charges                         $19,142        ($170,849)           $142,181
                                                             ===============   ===============   ================

Fixed charges:
    Interest on long-term debt                                      $57,313          $114,108           $114,108
    Amortization of debt
    expense and
      premium-net, and other interest                                18,867            35,805             35,805
      charges
    One-third of all rentals (Estimated to
    be
      representative of the interest                                  2,154             4,067              4,067
      component)
                                                             ---------------   ---------------   ----------------

Total Fixed Charges                                                 $78,334          $153,980           $153,980
                                                             ===============   ===============   ================

Ratio of earnings to fixed                                             0.24 *          (1.11) *             0.92 *
charges
                                                             ===============   ===============   ================
</TABLE>



     *    Earnings are  inadequate to cover fixed charges.  Additional  earnings
          (thousands)  for Six  Months  Ended  June 1998 of  $59,192  and Twelve
          Months  Ended June 1998 of $324,829  and  supplemental  Twelve  Months
          Ended June 1998 of $11,799 are required to attain a  one-to-one  ratio
          of Earnings to Fixed Charges.

     **   Supplemental  ratio of earnings to fixed charges  presented to exclude
          write-off  related to the  discontinued  application  of provisions of
          SFAS 71,  "Accounting  for the Effects of Certain Types of Regulation"
          for the generation segment of the business.



                                       32
<PAGE>



<TABLE>
<CAPTION>
                                                                                                   Exhibit 12(B)
                            ILLINOIS POWER COMPANY
                STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO
                                  FIXED CHARGES
                             (Thousands of Dollars)

                                                              Six             Twelve           Twelve
                                                            Months         Months Ended     Months Ended
                                                             Ended
                                                             June              June            June**
                                 -------------------------------------------------------------------------
                                                             1998              1998             1998
                                                             ----              ----             ----
Earnings Available for Fixed
Charges:
<S>                                                         <C>               <C>              <C>       
Net Income (Loss)                                           ($20,083)         ($181,272)       ($181,272)
    Add:
      Income Taxes:
         Current                                               26,309             61,347           61,347
         Deferred -                                          (48,761)           (49,551)         (49,551)
         Net
      Allocated income taxes                                  (1,852)            (2,680)          (2,680)
      Investment tax credit -                                 (3,447)            (7,278)          (7,278)
      deferred
      Income tax effect of FAS 71 write-off                    -               (117,998)        (117,998)
      Interest on long-term debt                               52,645            106,037          106,037
      Amortization of debt
      expense and
         premium-net, and other interest                       14,741             27,138           27,138
         charges
      One-third of all rentals (Estimated to
      be
         representative of the interest                         2,154              4,067            4,067
         component)
      Interest on in-core fuel                                  1,767              3,807            3,807
      FAS 71 Regulatory                                        -                -                 313,030
      Write-Offs
                                                          ------------    ---------------   --------------
Earnings (loss) available for fixed charges                   $23,473         ($156,383)         $156,647
                                                          ============    ===============   ==============

Fixed charges:
    Interest on long-term debt                                $52,645           $106,037         $106,037
    Amortization of debt expense,premium-net,
      other interest plus interest on IP Fuel                  18,379             34,545           34,545
    One-third of all rentals (Estimated to
    be
      representative of the interest                            2,154              4,067            4,067
      component)
                                                          ------------    ---------------   --------------

Total Fixed Charges                                           $73,178           $144,649         $144,649
                                                          ============    ===============   ==============

Ratio of earnings to fixed                                       0.32 *           (1.08) *           1.08
charges
                                                          ============    ===============   ==============
</TABLE>



     *    Earnings are  inadequate to cover fixed charges.  Additional  earnings
          (thousands)  for Six  Months  Ended  June 1998 of  $49,705  and Twelve
          Months Ended June 1998 of $301,032 are required to attain a one-to-one
          ratio of Earnings to Fixed Charges.

     **   Supplemental  ratio of earnings to fixed charges  presented to exclude
          write-off  related to the  discontinued  application  of provisions of
          SFAS 71,  "Accounting  for the Effects of Certain Types of Regulation"
          for the generation segment of the business.



                                       33
<PAGE>



<TABLE> <S> <C>


<ARTICLE>                                           UT
<LEGEND>
          This schedule  contains summary financial  information  extracted from
          the  balance  sheet,  income  statement,  and cash flow  statement  of
          Illinois  Power  Company and is qualified in its entirety by reference
          to the balance  sheet,  income  statement,  and cash flow statement of
          Illinois Power Company.
</LEGEND>
<MULTIPLIER>                                   1,000,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-1998
<PERIOD-START>                                 JAN-01-1998
<PERIOD-END>                                   JUN-30-1998
<BOOK-VALUE>                                   PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      4700
<OTHER-PROPERTY-AND-INVEST>                    5
<TOTAL-CURRENT-ASSETS>                         423
<TOTAL-DEFERRED-CHARGES>                       221
<OTHER-ASSETS>                                 0
<TOTAL-ASSETS>                                 5349
<COMMON>                                       1180
<CAPITAL-SURPLUS-PAID-IN>                      0
<RETAINED-EARNINGS>                            27
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 1207
                          197
                                    57
<LONG-TERM-DEBT-NET>                           1510
<SHORT-TERM-NOTES>                             80
<LONG-TERM-NOTES-PAYABLE>                      0
<COMMERCIAL-PAPER-OBLIGATIONS>                 288
<LONG-TERM-DEBT-CURRENT-PORT>                  12
                      0
<CAPITAL-LEASE-OBLIGATIONS>                    100
<LEASES-CURRENT>                               29
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 1869
<TOT-CAPITALIZATION-AND-LIAB>                  5349
<GROSS-OPERATING-REVENUE>                      957
<INCOME-TAX-EXPENSE>                           (26)
<OTHER-OPERATING-EXPENSES>                     931
<TOTAL-OPERATING-EXPENSES>                     905
<OPERATING-INCOME-LOSS>                        52
<OTHER-INCOME-NET>                             3
<INCOME-BEFORE-INTEREST-EXPEN>                 55
<TOTAL-INTEREST-EXPENSE>                       65
<NET-INCOME>                                   (10)
                    10
<EARNINGS-AVAILABLE-FOR-COMM>                  (20)
<COMMON-STOCK-DIVIDENDS>                       43
<TOTAL-INTEREST-ON-BONDS>                      53
<CASH-FLOW-OPERATIONS>                         247
<EPS-PRIMARY>                                  0
<EPS-DILUTED>                                  0
        


</TABLE>


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