ILLINOIS POWER CO
10-Q/A, 2000-03-01
ELECTRIC & OTHER SERVICES COMBINED
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549


                                    Form 10-Q/A

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

                  For the quarterly period ended June 30, 1999

                                       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, 69,919,287
                              shares outstanding at June 30, 1999

Illinois Power Company        Common stock, no par value,
                              62,892,213  shares  outstanding  held by  Illinova
                              Corporation at June 30, 1999


<PAGE>


                              ILLINOVA CORPORATION
                             ILLINOIS POWER COMPANY

This  combined  Form  10-Q/A 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/A FOR THE QUARTER ENDED June 30, 1999
                                      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 Comprehensive Income         7
                 Consolidated Statements of Cash Flows                   8

            Illinois Power Company

                 Consolidated Balance Sheets                         9 - 10
                 Consolidated Statements of Income                      11
                 Consolidated Statements of Comprehensive Income        12
                 Consolidated Statements of Cash Flows                  13

            Notes to Consolidated Financial Statements of
                 Illinova Corporation and
                 Illinois Power Company                            14 - 35

   Item 2:  Management's Discussion and Analysis of
                 Financial Condition and Results of
                 Operations for Illinova Corporation
                 and Illinois Power Company                        36 - 58

   Item 3:  Quantitative and Qualitative Disclosures
                 About Market Risk                                 58 - 61

Part II.  OTHER INFORMATION

   Item 6:  Exhibits and Reports on Form 8-K and Form 8-K/A             62

   Signatures                                                      63 - 64

   Exhibit Index                                                        65

                                       2
<PAGE>

<TABLE>
<CAPTION>
                          PART I. FINANCIAL INFORMATION
                                                              ILLINOVA CORPORATION
                                                        CONSOLIDATED BALANCE SHEETS AS RESTATED
          (See accompanying Notes to Consolidated Financial Statements)

                                                                                    JUNE 30,             DECEMBER 31,
                                                                                    1999                     1998
ASSETS                                                                            (Unaudited)             (Audited)
                                                                                          (Millions of Dollars)
<S>       <C>                                                                      <C>                  <C>
Utility Plant
    Electric (includes construction work
          in progress of $154.6 million and
          $177.7 million, respectively)                                            $5,584.1             $5,481.8
    Gas (includes construction work
          in progress of $13.2 million and
          $15.3 million, respectively)                                                693.7                686.9
                                                                                   --------             --------
                                                                                    6,277.8              6,168.7
Less - Accumulated depreciation                                                     1,756.4              1,713.7
                                                                                   --------             --------
                                                                                    4,521.4              4,455.0
Nuclear fuel                                                                           15.5                 20.3
                                                                                   --------             --------
       Total utility plant                                                          4,536.9              4,475.3
                                                                                   --------             --------
Investments and Other Assets                                                          265.9                246.9
                                                                                   --------             --------
Current Assets
    Cash and cash equivalents                                                          35.4                518.1
    Accounts receivable (less allowance
     for doubtful accounts of $5.5 million)
       Service                                                                        123.4                105.9
       Other                                                                          129.8                116.1
    Accrued unbilled revenue                                                           70.7                 82.6
    Materials and supplies, at average cost                                            80.8                 90.8
    Assets from commodity price risk
       management activities                                                           58.3                 51.5
    Prepayments and other                                                              58.2                 51.5
                                                                                   --------             --------
       Total current assets                                                           556.6              1,016.5
                                                                                   --------             --------
Deferred Charges
    Transition period cost recovery                                                   452.4                457.3
    Other                                                                             317.9                279.6
                                                                                   --------             --------
       Total deferred charges                                                         770.3                736.9
                                                                                   --------             --------
                                                                                   $6,129.7             $6,475.6
                                                                                   ========             ========
</TABLE>

                                       3
<PAGE>
<TABLE>
<CAPTION>
                                                           ILLINOVA CORPORATION
                                                        CONSOLIDATED BALANCE SHEETS AS RESTATED
                                       (See accompanying Notes to Consolidated Financial Statements)

                                                                                   JUNE 30,     DECEMBER 31,
                                                                                     1999          1998
CAPITAL AND LIABILITIES                                                          (Unaudited)    (Audited)
                                                                                     (Millions of Dollars)
Capitalization
    Common stock -
       No par value, 200,000,000 shares authorized;
<S>    <C>                                                                        <C>             <C>
       75,681,937 shares issued, stated at                                        $1,123.3        $1,123.2
    Less - Deferred compensation - ESOP                                                3.8             6.8
    Retained deficit - accumulated since 1/1/99                                      (17.1)            -
    Accumulated other comprehensive income                                             1.8             -
    Less - Capital stock expense                                                       7.3             7.3
    Less - 5,762,650 shares of common stock
       in treasury, at cost                                                          138.7           138.7
                                                                                  --------        --------
          Total common stock equity                                                  958.2           970.4

    Preferred stock of subsidiary                                                     50.4            57.1
    Company obligated mandatorily redeemable
       preferred stock of subsidiary                                                 194.0           199.0
    Long-term debt                                                                   175.4           176.1
    Long-term debt of subsidiary                                                   2,137.2         2,158.5
                                                                                  --------        --------
          Total capitalization                                                     3,515.2         3,561.1
                                                                                  --------        --------

Current Liabilities
    Accounts payable                                                                 232.6           256.5
    Notes payable                                                                    122.0           147.6
    Long-term debt and lease obligations
       of subsidiary maturing within one year                                        287.1           506.6
    Liabilities from commodity price
       risk management activities                                                    100.0            99.8
    Other                                                                            219.1           203.8
                                                                                  --------        --------
          Total current liabilities                                                  960.8         1,214.3
                                                                                  --------        --------
Deferred Credits
    Accumulated deferred income taxes                                                832.2           834.8
    Accumulated deferred investment tax credits                                       38.8            39.6
    Decommissioning liability                                                        528.5           567.4
    Other                                                                            254.2           258.4
                                                                                  --------        --------
          Total deferred credits                                                   1,653.7         1,700.2
                                                                                  --------        --------
                                                                                  $6,129.7        $6,475.6
                                                                                  ========        ========
</TABLE>

                                       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,
                                                                  1999               1998                 1999               1998
                                                                                           (Unaudited)
                                                                                     (Millions except per share)
Operating Revenues:
<S>                                                              <C>                 <C>               <C>                 <C>
     Electric                                                    $276.7              $304.5            $  531.9            $  581.1
     Electric interchange                                          56.2               112.7               150.2               209.0
     Gas                                                           45.2                49.8               168.3               166.4
     Diversified enterprises                                      101.2                80.3               177.3               166.2
                                                                 ------              ------            --------            --------
         Total                                                    479.3               547.3             1,027.7             1,122.7
                                                                 ------              ------            --------            --------

Operating Expenses:
     Fuel for electric plants                                      60.0                53.9               111.4               109.6
     Power purchased                                               46.7               229.4                98.4               326.5
     Gas purchased for resale                                      17.0                22.4                89.5                88.4
     Diversified enterprises                                      114.5                85.0               196.0               179.7
     Other operating expenses                                      81.0                87.9               191.4               167.7
     Maintenance                                                   26.1                35.0                67.4                64.0
     Depreciation and amortization                                 44.9                50.5                89.4               101.2
     Amortization of regulatory asset                               6.2                 -                   7.7                   -
     General taxes                                                 22.9                34.3                52.8                73.0
                                                                 ------              ------            --------            --------
         Total                                                    419.3               598.4               904.0             1,110.1
                                                                 ------              ------            --------            --------
Operating Income (Loss)                                            60.0               (51.1)              123.7                12.6
                                                                 ------              ------            --------            --------
Other Income and Deductions:
     Miscellaneous-net                                              6.3                 2.8                17.2                 1.3
     Equity earnings in affiliates                                  2.9                 3.4                 3.4                 8.9
                                                                 ------              ------            --------            --------
         Total                                                      9.2                 6.2                20.6                10.2
                                                                 ------              ------            --------            --------
Income (Loss) Before Interest
     Charges and Income Taxes                                      69.2               (44.9)              144.3                22.8
                                                                 ------              ------            --------            --------
Interest Charges:
     Interest expense                                              46.8                35.9                89.9                72.5
     Allowance for borrowed funds
         used during construction                                  (2.0)               (1.2)               (3.2)               (2.3)
     Preferred dividend
         requirements of subsidiary                                 4.7                 5.0                 9.7                 9.9
                                                                 ------              ------            --------            --------
         Total                                                     49.5                39.7                96.4                80.1
                                                                 ------              ------            --------            --------
Income (Loss) Before Income Taxes                                  19.7               (84.6)               47.9               (57.3)
                                                                 ------              ------            --------            --------
Income Taxes                                                       10.7               (37.6)               22.0               (33.3)
                                                                 ------              ------            --------            --------
Net Income (Loss)                                                   9.0               (47.0)               25.9               (24.0)
     Carrying amount (under) over
         consideration paid for redeemed
         preferred stock of subsidiary                             (0.3)                -                   0.5                   -
                                                                 ------              ------            --------            --------
Net Income (Loss) Applicable to
     Common Stock                                                $  8.7              $(47.0)           $   26.4            $  (24.0)
                                                                 ======              ======            ========            ========
Earnings (Loss) per common share (basic
     and diluted)                                                 $0.12              ($0.66)              $0.38              ($0.34)
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                                           69,919,287          71,712,791          69,919,287          71,707,054
</TABLE>

                                       5
<PAGE>
<TABLE>
<CAPTION>
                              ILLINOVA CORPORATION
                 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
          (See accompanying Notes to Consolidated Financial Statements)


                                                                      THREE MONTHS ENDED      SIX MONTHS ENDED
                                                                            JUNE 30,              JUNE 30,
                                                                      1999         1998       1999       1998
                                                                                     (Unaudited)
                                                                               (Millions of Dollars)

<S>                                                                   <C>        <C>          <C>       <C>
Net Income (Loss) Applicable to Common Stock                           $8.7      ($47.0)      $26.4     ($24.0)
                                                                      -----      ------      ------     -------
Other Comprehensive Income, before tax
     Foreign currency translation adjustments                          (0.1)        -          (0.2)       -
     Unrealized gains on securities                                     2.8         -           3.3        -
                                                                      -----      ------      ------     -------
         Other comprehensive income, before tax                         2.7         -           3.1        -
     Income taxes on other comprehensive income                        (1.1)        -          (1.3)       -
                                                                      -----      ------      ------     -------
     Other comprehensive income, net of tax                             1.6         -           1.8        -
                                                                     ------      ------      ------     -------
Comprehensive Income (Loss)                                           $10.3      ($47.0)      $28.2     ($24.0)
                                                                     ======      ======      ======     =======
</TABLE>

                                       6
<PAGE>
                              ILLINOVA CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
          (See accompanying Notes to Consolidated Financial Statements)

                                                             SIX MONTHS ENDED
                                                                  JUNE 30,
                                                             1999         1998
                                                                (Unaudited)
                                                          (Millions of dollars)

CASH FLOWS FROM OPERATING ACTIVITIES
     Net income (loss)                                     $  25.9     $ (24.0)
     Items not requiring cash, net                           139.6        29.4
     Changes in assets and liabilities                      (124.0)      229.3
                                                           -------     -------

     Net cash provided by operating activities                41.5       234.7
                                                           -------     -------

CASH FLOWS FROM INVESTING ACTIVITIES
     Construction expenditures                              (150.5)     (115.0)
     Other investing activities                              (31.0)      (28.3)
                                                           -------     -------

     Net cash used in investing activities                  (181.5)     (143.3)
                                                           -------     -------

CASH FLOWS FROM FINANCING ACTIVITIES
     Dividends on common stock                               (43.3)      (44.4)
     Reissuance of common stock                                -           0.7
     Capital lease repayment                                 (61.1)        -
     Redemptions -
          Short-term debt                                   (451.4)     (154.8)
          Long-term debt of subsidiary                      (428.8)     (109.2)
          Preferred stock of subsidiary                      (11.7)        -
     Issuances -
          Short-term debt                                    425.8       107.8
          Long-term debt                                     250.0        92.4
     Other financing activities                              (22.2)        0.5
                                                           -------     -------
     Net cash used in financing activities                  (342.7)     (107.0)
                                                           -------     -------

     NET CHANGE IN CASH AND CASH EQUIVALENTS                (482.7)      (15.6)
     CASH AND CASH EQUIVALENTS
        AT BEGINNING OF YEAR                                 518.1        33.0
                                                           -------     -------

     CASH AND CASH EQUIVALENTS
        AT END OF PERIOD                                   $  35.4     $  17.4
                                                           =======     =======

                                       7
<PAGE>
                             ILLINOIS POWER COMPANY
                           CONSOLIDATED BALANCE SHEETS AS RESTATED
          (See accompanying Notes to Consolidated Financial Statements)

                                                JUNE 30,         DECEMBER 31,
                                                  1999              1998
ASSETS                                        (Unaudited)         (Audited)
                                                   (Millions of Dollars)
Utility Plant
   Electric (includes construction work
       in progress of $154.6 million and
       $177.7 million, respectively)           $5,584.1          $5,481.8
   Gas (includes construction work
       in progress of $13.2 million and
       $15.3 million, respectively)               693.7             686.9
                                               --------          --------
                                                6,277.8           6,168.7
Less - Accumulated depreciation                 1,756.4           1,713.7
                                               --------          --------
                                                4,521.4           4,455.0
Nuclear fuel                                       15.5              20.3
                                               --------          --------
     Total utility plant                        4,536.9           4,475.3
                                               --------          --------
Investments and Other Assets                        2.8               2.6
                                               --------          --------
Current Assets
   Cash and cash equivalents                       17.0             504.5
   Accounts receivable (less allowance
    for doubtful accounts of $5.5 million)
     Service                                      123.4             105.9
     Other                                         43.1              32.5
   Accrued unbilled revenue                        70.7              82.6
   Materials and supplies, at average cost         80.3              90.4
   Assets from commodity price risk
     management activities                         27.6              26.0
   Prepayments and other                           40.0              42.8
                                               --------          --------
     Total current assets                         402.1             884.7
                                               --------          --------
Deferred Charges
   Transition period cost recovery                452.4             457.3
   Other                                          318.5             284.2
                                               --------          --------
     Total deferred charges                       770.9             741.5
                                               --------          --------
                                               $5,712.7          $6,104.1
                                               ========          ========

                                       8
<PAGE>
<TABLE>
<CAPTION>
                                                         ILLINOIS POWER COMPANY
                                                       CONSOLIDATED BALANCE SHEETS AS RESTATED
                                      (See accompanying Notes to Consolidated Financial Statements)

                                                           JUNE 30,           DECEMBER 31,
                                                             1999                 1998
CAPITAL AND LIABILITIES                                  (Unaudited)           (Audited)
                                                             (Millions of Dollars)
<S>                                                       <C>               <C>
Capitalization
    Common stock -
      No par value, 100,000,000 shares
      authorized; 75,643,937 shares issued,
      stated at                                           $1,186.0          $1,185.9
    Retained earnings - accumulated since 1/1/99              14.3               -
    Accumulated other comprehensive income                     1.9               -
    Less - Capital stock expense                               7.3               7.3
    Less - 12,751,724 shares of
      common stock in treasury, at cost                      286.4             286.4
                                                          --------          --------
           Total common stock equity                         908.5             892.2
    Preferred stock                                           50.4              57.1
    Company obligated mandatorily
      redeemable preferred stock                             194.0             199.0
    Long-term debt                                         2,137.2           2,158.5
                                                          --------          --------
           Total capitalization                            3,290.1           3,306.8
                                                          --------          --------

Current Liabilities
    Accounts payable                                         201.1             216.2
    Notes payable                                             80.0             147.6
  Long-term debt and lease obligations
      maturing within one year                               287.1             506.6
    Liabilities from commodity price
      risk management activities                              61.0              61.6
    Other                                                    132.4             150.5
                                                          --------          --------
           Total current liabilities                         761.6           1,082.5
                                                          --------          --------
Deferred Credits
    Accumulated deferred income taxes                        839.6             849.5
    Accumulated deferred investment tax credits               38.8              39.6
    Decommissioning liability                                528.5             567.4
    Other                                                    254.1             258.3
                                                          --------          --------
           Total deferred credits                          1,661.0           1,714.8
                                                          --------          --------
                                                          $5,712.7          $6,104.1
                                                          ========          ========

                                       9
<PAGE>
</TABLE>
<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,
                                                     1999        1998        1999        1998
                                                                    (Unaudited)
                                                               (Millions of dollars)
Operating Revenues:
<S>                                                <C>          <C>         <C>         <C>
     Electric                                      $276.7       $304.5      $531.9      $581.1
     Electric interchange                            56.2        112.7       150.2       209.0
     Gas                                             45.2         49.8       168.3       166.4
                                                   ------       ------      ------      ------
          Total                                     378.1        467.0       850.4       956.5
                                                   ------       ------      ------      ------

Operating Expenses and Taxes:
     Fuel for electric plants                        60.0         53.9       111.4       109.6
     Power purchased                                 46.7        229.4        98.4       326.5
     Gas purchased for resale                        17.0         22.4        89.5        88.4
     Other operating expenses                        81.0         87.9       191.4       167.7
     Maintenance                                     26.1         35.0        67.4        64.0
     Depreciation and amortization                   44.9         50.5        89.4       101.2
     Amortization of regulatory asset                 6.2            -         7.7           -
     General taxes                                   22.9         34.3        52.8        73.0
     Income taxes                                    23.0        (36.6)       36.7       (25.9)
                                                   ------       ------      ------      ------
          Total                                     327.8        476.8       744.7       904.5
                                                   ------       ------      ------      ------
Operating Income (Loss)                              50.3         (9.8)      105.7        52.0
                                                   ------       ------      ------      ------
Other Income and Deductions, Net                     11.6          1.3        17.8         2.9
                                                   ------       ------      ------      ------
Income (Loss) Before Interest Charges                61.9         (8.5)      123.5        54.9
                                                   ------       ------      ------      ------

Interest Charges and Other:
     Interest expense                                43.9         33.3        83.7        67.4
     Allowance for borrowed funds
          used during construction                  (2.0)         (1.2)       (3.2)       (2.3)
                                                   ------       ------      ------      ------
          Total                                      41.9         32.1        80.5        65.1
                                                   ------       ------      ------      ------

Net Income (Loss)                                    20.0        (40.6)       43.0       (10.2)
     Less-Preferred dividend
          requirements                                4.7          5.0         9.7         9.9
     Plus - Carrying amount (under) over
          consideration paid for
          redeemed preferred stock                  (0.3)            -         0.5           -
                                                   ------       ------      ------      ------
Net Income (Loss) Applicable to
     Common Stock                                   $15.0       ($45.6)      $33.8      ($20.1)
                                                   ======      =======      ======      ======

                                       10
<PAGE>
</TABLE>

<TABLE>
<CAPTION>
                             ILLINOIS POWER COMPANY
                 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
          (See accompanying Notes to Consolidated Financial Statements)


                                                                         THREE MONTHS ENDED        SIX MONTHS ENDED
                                                                               JUNE 30,                JUNE 30,
                                                                        1999       1998             1999      1998
                                                                                        (Unaudited)
                                                                                 (Millions of Dollars)

<S>                                                                    <C>       <C>               <C>       <C>
Net Income (Loss) Applicable to Common Stock                           $15.0     ($45.6)           $33.8     ($20.1)
                                                                       -----     ------            -----     ------

Other Comprehensive Income, before tax
     Unrealized gains on securities                                      2.7          -              3.1          -
     Income taxes on other comprehensive income                         (1.0)         -             (1.2)         -
                                                                       -----     ------            -----     ------
     Other comprehensive income, net of tax                             1.7           -              1.9          -
                                                                       -----     ------            -----     ------

Comprehensive Income (Loss)                                            $16.7     ($45.6)           $35.7     ($20.1)
                                                                       =====     ======            =====     ======

                                       11
<PAGE>
</TABLE>
                             ILLINOIS POWER COMPANY
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
          (See accompanying Notes to Consolidated Financial Statements)

                                                            SIX MONTHS ENDED
                                                               JUNE 30,
                                                            1999        1998
                                                               (Unaudited)
                                                         (Millions of dollars)

CASH FLOWS FROM OPERATING ACTIVITIES
     Net income (loss)                                  $  43.0         $(10.2)
     Items not requiring cash, net                        133.0           34.0
     Changes in assets and liabilities                   (137.8)         222.9
                                                        -------         ------

     Net cash provided by operating activities             38.2          246.7
                                                        -------         ------

CASH FLOWS FROM INVESTING ACTIVITIES
     Construction expenditures                           (150.4)        (115.0)
     Other investing activities                            (5.3)           3.9
                                                        -------         ------

     Net cash used in investing activities               (155.7)        (111.1)
                                                        -------         ------

CASH FLOWS FROM FINANCING ACTIVITIES
     Dividends on preferred and common stock              (28.6)         (52.7)
     Repurchase of common stock                               -          (29.4)
     Capital lease repayment                              (61.1)             -
     Redemptions -
          Short-term debt                                (385.4)        (107.4)
          Long-term debt                                 (428.8)        (109.2)
          Preferred stock                                 (11.7)             -
     Issuances -
          Short-term debt                                 317.8           98.9
          Long-term debt                                  250.0           52.4
     Other financing activities                           (22.2)           0.3
                                                        -------         ------

     Net cash used in financing activities               (370.0)        (147.1)
                                                        -------         ------

NET CHANGE IN CASH AND CASH EQUIVALENTS                  (487.5)         (11.5)
CASH AND CASH EQUIVALENTS
        AT BEGINNING OF YEAR                              504.5           17.8
                                                        -------         ------

CASH AND CASH EQUIVALENTS
        AT END OF PERIOD                                $  17.0         $  6.3
                                                        =======         ======

                                       12
<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
1998 Annual  Report to  Shareholders,  (included  in the Proxy  Statement),  the
consolidated financial statements and the accompanying notes in IP's 1998 Annual
Report to Shareholders (included in the Information  Statement),  Illinova's and
IP's 1998 Form 10-K  filings to the SEC, 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, 1999,
and audited December 31, 1998,  consolidated  financial  statements for Illinova
reflect all  adjustments  necessary to present fairly the  Consolidated  Balance
Sheets as of June 30, 1999, and December 31, 1998, the  Consolidated  Statements
of  Income  for the three  and six  months  ended  June 30,  1999 and 1998,  the
Consolidated  Statements  of  Comprehensive  Income for the three and six months
ended June 30, 1999 and 1998, and the Consolidated  Statements of Cash Flows for
the three and six  months  ended  June 30,  1999 and 1998.  In  addition,  it is
Illinova's and IP's opinion that the  accompanying  unaudited June 30, 1999, and
audited December 31, 1998,  consolidated financial statements for IP reflect all
adjustments  necessary to present fairly the  Consolidated  Balance Sheets as of
June 30, 1999, and December 31, 1998, the Consolidated  Statements of Income for
the  three  and six  months  ended  June 30,  1999 and  1998,  the  Consolidated
Statements of  Comprehensive  Income for the three and six months ended June 30,
1999 and 1998, and the  Consolidated  Statements of Cash Flows for the three and
six months ended June 30, 1999 and 1998. 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). All significant  intercompany  balances and  transactions  have been
eliminated from the  consolidated  financial  statements.  All  transactions for
Illinova's  unregulated   subsidiaries  are  included  in  the  sections  titled
"Diversified  Enterprises," "Interest Charges," "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., Illinois Power Financing I (IPFI),  Illinois Power
Securitization  Limited  Liability  Company,  and Illinois Power Special Purpose
Trust (IPSPT). 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.


                                       13
<PAGE>

REGULATORY AND LEGAL MATTERS

   OPEN ACCESS AND COMPETITION

         The Illinois  Customer Choice and Rate Relief Act of 1997, P.A. 90-561,
Illinois  electric utility  restructuring  legislation,  was enacted in December
1997. 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  May 1,  2002.  The rate  decreases  result in revenue  reductions  of
approximately   $35  million  in  1998,  and  expected  revenue   reductions  of
approximately $70 million in each of the years 1999 through 2001,  approximately
$90  million in 2002,  and  approximately  $100  million in 2003,  based on 1997
levels of consumption and compared to rates in effect in 1997.

         Under P.A. 90-561,  customers with demand greater than 4 MW at a single
site and  customers  with at least 10 sites which  aggregate  at least 9.5 MW in
total demand will be free to choose their electric generation suppliers ("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. Rates for delivery services for non-residential  customers will
be established in 1999, in proceedings mandated by P.A. 90-561.

         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  transition  charges are
     applicable  through  2006 and can be extended two  additional  years by the
     Illinois Commerce  Commission (ICC). The transition  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 the 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  increases  during the transition
     period. By Specifically  preventing IP from being held completely  harmless
     with regard to revenue loss, 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 affected by P.A. 90-561 will depend on
a number of factors  including  future  market  prices for  wholesale and retail
energy,  load growth and demand levels in the current IP service territory,  and
success in marketing to customers outside IP's service territory.  The impact on
net income will depend on, among other things,  actual  revenues and the cost of
doing business.

                                       14
<PAGE>

         ACCOUNTING MATTERS


         Prior to the  enactment of P.A.  90-561,  IP prepared its  consolidated
financial  statements in accordance with FAS 71,  "Accounting for the Effects of
Certain Types of  Regulation."  Because P.A.  90-561  provides for  market-based
pricing of electric generation services,  IP discontinued  application of FAS 71
for its generating segment in December 1997, when P.A. 90-561 was enacted.

         In December 1998,  Illinova's  and IP's Boards of Directors  decided to
exit the nuclear  portion of the  business by either sale or shutdown of Clinton
Power Station (Clinton).  FAS 121,  "Accounting for the Impairment of Long-Lived
Assets  and  for  Long-Lived  Assets  to be  Disposed  Of,"  requires  that  all
long-lived  assets for which  management  has committed to a plan of disposal be
reported  at the lower of  carrying  amount or fair  value  less  costs to sell.
Consequently, IP wrote off the value of Clinton and accrued Clinton-related exit
costs,  which resulted in a $1,523.7  million loss, net of income taxes,  and an
accumulated  deficit in Illinova's  consolidated  retained  earnings  balance of
$1,616.0 million.

         Illinova's  and IP's Boards of Directors also chose in December 1998 to
effect  a  quasi-reorganization.   The  quasi-reorganization  is  an  accounting
procedure  that  eliminated  the  accumulated  deficit in retained  earnings and
permitted  the  Company  to  proceed  on much the  same  basis as if it had been
legally  reorganized by restating the Company's  assets and liabilities to their
fair values,  with the net amount of these adjustments added to or deducted from
the deficit. The remaining deficit in retained earnings was then eliminated by a
transfer  from paid-in  capital,  giving the Company a "fresh start" with a zero
balance in retained earnings.  The  quasi-reorganization  eliminated  Illinova's
consolidated accumulated deficit in retained earnings of $1,616.0 million.

     IP  recognized  the  impairment  of  Clinton-related   assets  and  accrued
exit-related  costs in  December  1998,  based on expected  plant  closure as of
August 31, 1999.  IP now expects to consummate  the sale of the  Clinton-related
assets by the end of 1999. On receipt of various regulatory  approvals necessary
to consummate  the sale, IP will adjust its accruals for  exit-related  costs in
accordance  with the terms of the sale.  The  estimated  effect of adjusting the
accruals  for  exit-related  costs is  approximately  a $300  million  decrease.
Reduction of exit-related  accruals will not immediately  impact  earnings.  The
decrease in the accruals will result in an increase in other paid-in capital.

         Implementation of a  quasi-reorganization  required the adoption of any
accounting  standards  that  had not yet been  adopted  because  their  required
implementation date had not occurred.  All applicable  accounting standards were
adopted as of December 1998. The standards adopted included FAS 133, "Accounting
for  Derivative   Instruments  and  Hedging   Activities,"   EITF  Issue  98-10,
"Accounting  for  Contracts  Involved  in  Energy  Trading  and Risk  Management
Activities," SOP 98-1,  "Accounting for the Costs of Computer Software Developed
or Obtained for Internal Use," and SOP 98-5, "Reporting on the Costs of Start-Up
Activities."

        Illinova and IP recognized other comprehensive income for the six months
ended June 30, 1999, as required by FAS 130, "Reporting  Comprehensive  Income."
FAS 130 established  standards for reporting and display of comprehensive income
and  its  components  in a full  set of  general-purpose  financial  statements.

                                       15
<PAGE>

Illinova and IP have adopted the two-statement  approach, as provided for by FAS
130 and present a separate statement of comprehensive  income in addition to the
income statement.  Items included in Illinova's other  comprehensive  income for
the three and six  months  ended  June 30,  1999,  include  unrealized  gains on
securities,  foreign currency translations, and related income taxes. IP's other
comprehensive income for the three and six months ended June 30, 1999, comprised
unrealized  gains on securities held in IP's nuclear  decommissioning  trust and
related income taxes. There were no items reported as other comprehensive income
in 1998.


MANUFACTURED GAS PLANT SITES

        IP has recorded an estimated  liability for Manufactured Gas Plant (MGP)
site remediation of $59 million. This amount represents IP's current estimate of
the  costs  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 currently 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.  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 MGP remediation  costs and will be credited to customers  through
the tariff rider mechanism which the ICC has previously approved.  Cleanup costs
in excess of insurance  proceeds will be fully recovered from IP's  transmission
and distribution customers.


TREASURY STOCK

        Through June 30, 1999, IP has purchased a total of 12,751,724  shares of
its common  stock from  Illinova,  all of which are held as  treasury  stock and
deducted from common equity at the cost of the shares purchased. No shares of IP
common  stock were  purchased  during  the first six months of 1999.  In October
1998,  the Illinova  Board approved the repurchase of up to 12 million shares of
Illinova  common stock over the next six to twelve  months in  conjunction  with
IP's issuance of  securitized  debt. No  additional  repurchases  are planned at
present.  For  more  information,  see  "Liquidity  and  Capital  Resources"  of
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations" on page 34 of this report.

        As part of the  contemplated  merger  with  Dynegy,  on June  13,  1999,
Illinova entered into a forward  purchase  agreement  allowing  purchases on the
open market of up to 6.64 million shares of Illinova  common stock over the next
two years. At present no shares have been purchased under this agreement.


FINANCIAL AND OTHER DERIVATIVE INSTRUMENTS

        Trading  Activities-  Illinova,  through its  subsidiaries,  IP and IEP,
engages in the brokering and  marketing of  electricity  and natural gas. IP and
IEP  use a  variety  of  instruments,  including  fixed-price  swap  agreements,
variable-price  swap  agreements,  exchange-traded  energy  futures  and options
contracts, and over-the-counter forwards, swaps, and options.

        As of December 31,  1998,  Illinova  and its  subsidiaries  adopted EITF
98-10.  For more  information  regarding  Illinova's  adoption of new accounting
pronouncements,  see  Accounting  Matters  of  this  section  on page 15 of this
report.  At June 30, 1999, IP's and IEP's derivative assets and liabilities were

                                       16
<PAGE>

recorded in the Consolidated  Balance Sheets at fair value with unrealized gains
and losses shown net in the Consolidated Statements of Income. IP and IEP record
realized  gains and losses as  components  of operating  revenues and  operating
expenses in the Consolidated Statements of Income.

        The notional quantities and average terms of commodity  instruments held
for trading purposes at June 30, 1999, are presented below:

                        Volume-Fixed        Volume-Fixed          Average
                         Price Payor       Price Receiver           Term
Electricity
   IP                       1,650 MW           1,550 MW            1 year
   IEP                     11,475 MW          11,339 MW            1 year
Gas
   IEP (in thousands)       5,980 MMBtu        5,980 MMBtu         1 year

        All  notional  amounts  reflect  the volume of  transactions  but do not
represent the dollar amounts or actual megawatts exchanged by the parties to the
contracts.  Accordingly,  notional amounts do not accurately  measure Illinova's
exposure to market or credit risk.

        The  estimated  fair value of  commodity  instruments  held for  trading
purposes at June 30, 1999, are presented below:

                                            Fair Value          Fair Value
      (Millions of dollars)                   Assets            Liabilities

Electricity
   IP                                          $23.5              $49.0
   IEP                                          28.8               37.5
                                                ----               ----
                                                52.3               86.5

Gas
   IEP                                           1.8                1.1
                                                 ---                ---
                                               $53.8              $87.6

        The fair value was  estimated  using  quoted  prices and  indices  where
available and the liquidity of the market for the instrument was considered. The
fair values are subject to volatility based on changing market conditions.

        The weighted average term of the trading portfolio,  based on volume, is
less than one year.  The  maximum  and average  terms  disclosed  herein are not
indicative of likely future cash flows as these positions may be modified by new
transactions in the trading portfolio at any time in response to changing market
conditions, market liquidity, and Illinova's risk management portfolio needs and
strategies.  Terms  regarding  cash  settlements  of these  contracts  vary with
respect to the actual timing of cash receipts and payments.

Non-Trading Activities- To reduce the risk from market fluctuations in the price
of electricity and related  transmission,  Illinova,  through its subsidiary IP,
enters into forward transactions, swaps, and options (energy derivatives). These
instruments are used to hedge expected  purchases,  sales,  and  transmission of
electricity  (a portion of which are firm  commitments  at the  inception of the
hedge).  The weighted  average  maturity of these  instruments  is less than one
year.

        Periodically,   IP  has  used  interest  rate  derivatives  (principally
interest  rate swaps and caps) to adjust the portion of its  overall  borrowings
subject to interest rate risk. As of June 30, 1999,  there were no interest rate
derivatives outstanding.

        In order to hedge  expected  purchases  of emission  allowances,  IP has
entered into swap  agreements  and written put options  with other  utilities to
mitigate the risk from market  fluctuations in the price of the  allowances.  At

                                       17
<PAGE>

June 30, 1999, the notional  amount of two emission  allowance swaps was 126,925
units,  with a  recorded  liability  of $19.9  million,  based on fair  value at
delivery date. The maximum  maturity of the swap  agreements is 10 years.  These
swap  agreements  do not fall  under  the  scope of FAS 133.  Due to the  remote
probability  of  exercise,  the three put options  written by IP are  considered
immaterial.

        As of December 31, 1998, Illinova and its subsidiaries  adopted FAS 133.
IP's  derivative   assets  and   liabilities  are  currently   recorded  on  the
Consolidated Balance Sheets at fair value with unrealized gains and losses shown
net in the Consolidated  Statements of Income. Hedge accounting was not applied.
In the future, if hedge accounting is applied,  unrealized gains and losses will
be shown as a component  of  Comprehensive  Income in the equity  section of the
Consolidated  Balance Sheets. IP records realized gains and losses as components
of operating revenues and operating  expenses in the Consolidated  Statements of
Income.  As of June  30,  1999,  all  non-trading  derivative  instruments  were
accounted for using mark-to-market accounting.

        The  notional  quantities  and the  average  term of  energy  derivative
commodity  instruments  held for other than  trading  purposes at June 30, 1999,
follows:

                             Volume-Fixed       Volume-Fixed       Average
                             Price Payor       Price Receiver        Term
Electricity
   IP                           650 MW             150 MW            1 year

        In addition to the fixed-price notional volumes above, IP recorded a $25
million  liability  in 1998  for  two  "commodity  for  commodity"  energy  swap
agreements  totaling 350 MW which are not  considered  derivatives as defined by
FAS 133. As of June 30, 1999, the swap liability decreased to $21.6 million. The
decrease in the liability is due to IP's commencing  repayment of one power swap
in January 1999.

        The  notional  amount  is  intended  to be  indicative  of the  level of
activity in such  derivatives,  although  the amounts at risk are  significantly
smaller because changes in the market value of these  derivatives  generally are
offset  by  changes  in  the  value  associated  with  the  underlying  physical
transactions or in other derivatives.  When energy derivatives are closed out in
advance of the  underlying  commitment or  anticipated  transaction,  the market
value changes may not be offset  because price  movement  correlation  ceases to
exist when the positions are closed.

        The estimated fair values of energy  derivative  commodity  instruments,
held for non-trading purposes at June 30, 1999, are presented below:

                                      Fair Value              Fair Value
     (Millions of dollars)              Assets                Liabilities

Electricity
   IP                                    $4.1                    $12.0

        The fair value was  estimated  using  quoted  prices and  indices  where
available,  and considering the liquidity of the market for the instrument.  The
fair  values are subject to  significant  volatility  based on  changing  market
conditions.

        The average maturity and fair values discussed above are not necessarily
indicative of likely future cash flows.  These  positions may be modified by new
offsetting transactions at any time in response to changing generation forecast,
market conditions,  market liquidity,  and Illinova's risk management  portfolio
needs and strategies.  Terms regarding cash  settlements of these contracts vary
with respect to the actual timing of cash receipts and payments.

                                       18
<PAGE>

ILLINOVA - SEGMENTS OF BUSINESS

In 1997, the FASB issued FAS 131,  "Disclosures  about Segments of an Enterprise
and Related Information." This statement superseded FAS 14, "Financial Reporting
for  Segments of a Business  Enterprise,"  and  established  new  standards  for
defining a company's  segments and  disclosing  information  about them. The new
statement  requires  that  segments  be  based  on the  internal  structure  and
reporting of a company's operations.

The Illinova enterprise comprises six separate corporations and eight functional
business  groups.  The business  groups and their  principal  activities  are as
follows:

o    IP Customer Service Business Group - transmission,  distribution,  and sale
     of electric energy; distribution,  transportation,  and sale of natural gas
     in Illinois.
o    IP Wholesale Energy Business Group - fossil-fueled  electric  generation in
     Illinois,  wholesale electricity transactions throughout the United States,
     and dispatching activities.
o    IP Nuclear Generation  Business Group - nuclear-fueled  electric generation
     in Illinois.
o    Illinova Energy Partners - energy-related  products and services throughout
     the United States and Canada.
o    Illinova  Generating  Company - independent  power projects  throughout the
     world.
o    IP  Financial   Business  Group  -  financial  support  functions  such  as
     accounting,  finance, corporate performance, audit and compliance, investor
     relations,  legal, corporate development,  regulatory, risk management, and
     tax services.
o    IP  Support  Services  Business  Group  -  specialized  support  functions,
     including information technology, human resources, environmental resources,
     purchasing and materials management, and public affairs.
o    Corporate - Illinova  Corporation,  Illinova Insurance Company and Illinova
     Business  Enterprises - holding company;  insurance and risk products;  and
     miscellaneous business lines.

Of the above-listed  segments,  the IP Financial  Business Group, the IP Support
Services  Business Group,  and Corporate did not  individually  meet the minimum
threshold  requirements  for separate  disclosure  and are combined in the Other
category.

In 1998,  three  measures were used to judge segment  performance:  contribution
margin, cash flow, and return on net invested capital. In 1999, two measures are
used to judge segment  performance:  contribution margin and cash flow. Omission
of return on net  invested  capital  provides for  increased  focus on near-term
financial needs.

                                       19
<PAGE>

<TABLE>
<CAPTION>
Illinova Corporation
Three Months Ended June 30, 1999                              (Millions of Dollars)

                                                                                 Illinova
                                       Customer      Wholesale                    Energy        Illinova                   Consoli-
                                       Service        Energy        Nuclear      Partners      Generating      Other         dated
1999
           <S>                           <C>            <C>            <C>          <C>          <C>            <C>           <C>
Revenues from external customers       $320.8          $51.8          $5.5        $   -          $  -         $  -           $378.1
Diversified enterprise revenue             -              -             -           77.4          24.1         (0.3)          101.2
Intersegment revenue (1)                   -           118.9          37.2            -             -            -            156.1
                                       --------------------------------------------------------------------------------------------
   Total Revenue                        320.8          170.7          42.7          77.4          24.1         (0.3)          635.4
Depreciation and amortization
   expense                               23.7           25.7           1.6            -             -           0.1            51.1
Other operating expenses (1)            209.8          135.3          59.6          80.7          23.3         12.6           524.3
                                       --------------------------------------------------------------------------------------------
   Operating income (loss)               87.3            9.7         (18.5)         (3.3)         (2.2)       (13.0)           60.0
Interest expense                         19.3           21.1           3.3            -             -           3.1            46.8
AFUDC                                    (0.4)          (1.6)           -             -             -          (0.0)           (2.0)
                                       --------------------------------------------------------------------------------------------
   Income (loss) before taxes            68.4           (9.8)        (21.8)         (3.3)         (2.2)       (16.1)           15.2
Income tax expense (benefit)             26.2           (4.3)         (7.5)         (1.1)         (0.5)        (2.1)           10.7
Miscellaneous - net                       0.2           (1.9)         (1.6)           -           (0.5)        (1.0)           (4.8)
Equity earnings in affiliates              -              -             -           (0.6)         (2.2)        (0.1)           (2.9)
Interest revenue                           -              -           (0.8)           -             -          (0.7)           (1.5)
                                       --------------------------------------------------------------------------------------------
   Net income (loss) after taxes         42.0           (3.6)        (11.9)         (1.6)          1.0        (12.2)           13.7
Preferred dividend requirement and
   carrying amount over (under)
   consideration paid for redeemed
   preferred stock                        2.6            2.8          (0.7)           -             -          (0.3)            5.0
                                       --------------------------------------------------------------------------------------------
Net income (loss) applicable
   to common stock                      $39.4          $(6.4)       $(11.2)        $(1.6)         $1.0       $(12.5)           $8.7
- -----------------------------------------------------------------------------------------------------------------------------------
Other information -
   Total assets (2)                  $2,315.0       $3,162.4        $199.0         $97.6        $241.0       $114.7        $6,129.7
   Subsidiary's investment in
      equity method investees             -               -             -            9.8         192.4           -            202.2
   Total expenditures for additions
      to long-lived assets               27.2           86.0            -             -             -           2.1           115.3
- -----------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
   Contribution margin (3)              $52.5           $7.1        $(10.0)        $(1.6)         $1.0       $(10.4)          $38.6
   Cash flow (4)                         18.1          (51.2)        (26.4)         (2.9)          9.0         35.7           (17.7)
   Return on net invested capital (5)     N/A            N/A           N/A           N/A           N/A          N/A             N/A
</TABLE>

(1)  Intersegment  revenue priced at 2.9 cents per kwh  delivered.  Intersegment
     expense is reflected in other operating expenses for Customer Service. Both
     intersegment  revenue  and  expenses  were  eliminated for purposes  of the
     Consolidated Statements of Income.
(2)  Asset balances recorded by the business groups are significantly  different
     in 1999 due to the  impact  of the  impairment  and  write-off  of  nuclear
     generation, fair market valuation of fossil generation and recording of the
     regulatory asset to the Customer Service Business Group.
(3)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(4)  Cash flow before financing activities.
(5)  Return on net invested capital is no longer a corporate measure in 1999.

                                       20
<PAGE>

<TABLE>
<CAPTION>

Illinova Corporation
Three Months Ended June 30, 1998                                                   (Millions of Dollars)

                                                                                 Illinova
                                      Customer       Wholesale                    Energy        Illinova                   Consoli-
                                       Service        Energy        Nuclear      Partners      Generating     Other          dated
1998
<S>                                   <C>             <C>         <C>              <C>          <C>           <C>             <C>
Revenues from external customers       $352.9         $112.7          $1.4        $   -          $  -         $  -           $467.0
Diversified enterprise revenue             -              -             -           76.4           2.7          1.2            80.3
Intersegment revenue (1)                   -           120.2          (0.6)           -             -            -            119.6
                                       --------------------------------------------------------------------------------------------
   Total Revenue                        352.9          232.9           0.8          76.4           2.7          1.2           666.9
Depreciation and amortization
   expense                               16.9            7.5          24.7            -             -           1.4            50.5
Other operating expenses (1)            209.6          284.9          84.4          78.3           4.9          5.4           667.5
                                       --------------------------------------------------------------------------------------------
   Operating income (loss)              126.4          (59.5)       (108.3)         (1.9)         (2.2)        (5.6)          (51.1)
Interest expense                          9.4            2.9          10.8            -             -          12.8            35.9
AFUDC                                    (0.3)          (0.3)        (0.5)            -             -          (0.1)           (1.2)
                                       --------------------------------------------------------------------------------------------
   Income (loss) before taxes           117.3          (62.1)       (118.6)         (1.9)         (2.2)       (18.3)          (85.8)
Income tax expense (benefit)             48.0          (26.7)        (50.9)         (0.6)         (0.6)        (6.8)          (37.6)
Miscellaneous - net                       0.3           (1.2)           -             -           (0.2)        (0.3)           (1.4)
Equity earnings in affiliates              -              -             -           (0.4)         (3.0)          -             (3.4)
Interest revenue                           -              -             -             -             -          (1.4)           (1.4)
                                       --------------------------------------------------------------------------------------------
   Net income (loss) after taxes         69.0          (34.2)        (67.7)         (0.9)          1.6         (9.8)          (42.0)
Preferred dividend requirement            1.7            0.6           2.5            -             -           0.2             5.0
                                       --------------------------------------------------------------------------------------------
Net income (loss) applicable
   to common stock                      $67.3         $(34.8)       $(70.2)        $(0.9)         $1.6       $(10.0)         $(47.0)
- -----------------------------------------------------------------------------------------------------------------------------------
Other information -
   Total assets                      $1,795.3         $715.6      $2,771.7         $53.1        $199.3       $102.9        $5,637.9
   Subsidiary's investment in
      equity method investees              -              -             -            9.6         173.8           -            183.4
   Total expenditures for additions
      to long-lived assets               30.7           17.2          19.0            -             -           1.5            68.4
- -----------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
   Contribution margin (2)              $73.4         $(33.6)       $(61.4)        $(0.9)         $1.6        $(2.8)         $(23.7)
   Cash flow (3)                         53.7           78.0         (70.4)          1.4          (0.9)       (23.0)           38.8
   Return on net invested capital (4)     5.6%          -7.4%          N/A           2.2%          0.8%         N/A            -0.7%
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1)  Intersegment  revenue priced at 2.5 cents per kwh  delivered.  Intersegment
     expense is reflected  in other  operating  expenses  for Customer  Service.
     Nuclear  reflects a  replacement  power expense for the increment of market
     price over the intersegment  price. Both intersegment  revenue and expenses
     were eliminated for purposes of the Consolidated Statements of Income.
(2)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax),  preferred dividend  requirement.
(3)  Cash flow before financing activities.
(4)  Return on net invested capital calculated as contribution margin divided by
     net invested capital.

                                       21
<PAGE>

ILLINOVA GEOGRAPHIC INFORMATION

(Millions of dollars)
- --------------------------------------------------------------------------------
Second Quarter                           1999        1998
- --------------------------------------------------------------------------------
Revenues: (1)
     United States                      $474.9      $545.2
     Foreign countries (Seven)             4.4         2.1
                                        ------      ------
                                        $479.3      $547.3
                                        ======      ======


(Millions of dollars)
- --------------------------------------------------------------------------------
June 30,                                 1999        1998
- --------------------------------------------------------------------------------
Long-lived assets: (2)
     United States                    $4,507.5    $4,601.7
     Foreign countries (Nine)            161.8       132.2
                                      --------    --------
                                      $4,669.3    $4,733.9
                                      ========    ========

(1)  Revenues  are  attributed  to  geographic  regions  based  on  location  of
     customer.
(2)  Long-lived   assets   include   plant,   equipment,   and   investments  in
     subsidiaries.

                                       22
<PAGE>

<TABLE>
<CAPTION>
Illinova Corporation
Six Months Ended June 30, 1999                                                   (Millions of Dollars)

                                                                                Illinova
                                      Customer       Wholesale                   Energy         Illinova                   Consoli-
                                       Service        Energy        Nuclear      Partners       Generating    Other          dated
1999
<S>                                    <C>            <C>         <C>              <C>          <C>            <C>            <C>
Revenues from external customers       $697.5         $145.9          $7.0        $   -          $  -         $  -           $850.4
Diversified enterprise revenue             -              -             -          123.8          52.4          1.1           177.3
Intersegment revenue (1)                   -           254.8          36.5            -             -            -            291.3
                                       --------------------------------------------------------------------------------------------
   Total Revenue                        697.5          400.7          43.5         123.8          52.4          1.1         1,319.0
Depreciation and amortization
   expense                               42.2           51.3           3.6            -             -          (0.0)           97.1
Other operating expenses (1)            485.1          261.9         149.0         130.0          56.4         15.8         1,098.2
                                       --------------------------------------------------------------------------------------------
   Operating income (loss)              170.2           87.5        (109.1)         (6.2)         (4.0)       (14.7)          123.7
Interest expense                         38.6           41.0           4.0            -             -           6.3            89.9
AFUDC                                    (0.8)          (2.4)           -             -             -           0.0            (3.2)
                                       --------------------------------------------------------------------------------------------
   Income (loss) before taxes           132.4           48.9        (113.1)         (6.2)         (4.0)       (21.0)           37.0
Income tax expense (benefit)             50.6           18.0         (43.2)         (1.8)          1.2         (2.8)           22.0
Miscellaneous - net                       0.2           (1.8)         (2.1)           -           (6.7)        (2.2)          (12.6)
Equity earnings in affiliates              -              -             -           (1.6)         (1.8)          -             (3.4)
Interest revenue                           -              -           (1.9)           -             -          (2.7)           (4.6)
                                       --------------------------------------------------------------------------------------------
   Net income (loss) after taxes         81.6           32.7         (65.9)         (2.8)          3.3        (13.3)           35.6
Preferred dividend requirement and
   carrying amount over (under)
   consideratin paid for redeemed
   preferred stock                        5.5           5.8           (1.6)           -             -          (0.5)            9.2
                                       --------------------------------------------------------------------------------------------
Net income (loss) applicable
   to common stock                      $76.1          $26.9        $(64.3)        $(2.8)         $3.3       $(12.8)          $26.4
- -----------------------------------------------------------------------------------------------------------------------------------
Other information -
   Total assets (2)                  $2,315.0       $3,162.4        $199.0         $97.6        $241.0       $114.7        $6,129.7
   Subsidiary's investment in
      equity method investees              -              -             -            9.8         192.4           -            202.2
   Total expenditures for additions
      to long-lived assets               50.1          100.5            -             -             -           3.0           153.6
- -----------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
   Contribution margin (3)             $102.5          $53.8        $(63.4)        $(2.8)         $3.3        $(9.5)          $83.9
   Cash flow (4)                         60.2         (138.8)       (132.7)         (4.6)         21.5         87.3          (107.1)
   Return on net invested capital (5)     N/A            N/A           N/A           N/A           N/A          N/A             N/A
</TABLE>

(1)  Intersegment  revenue priced at 2.9 cents per kwh  delivered.  Intersegment
     expense is reflected in other operating expenses for Customer Service. Both
     intersegment  revenue and  expenses  were  eliminated  for  purposes of the
     Consolidated Statements of Income.
(2)  Asset balances recorded by the business groups are significantly  different
     in 1999 due to the  impact  of the  impairment  and  write-off  of  nuclear
     generation, fair market valuation of fossil generation and recording of the
     regulatory asset to the Customer Service Business Group.
(3)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(4)  Cash flow before financing activities.
(5)  Return on net invested capital is no longer a corporate measure in 1999.

                                       23
<PAGE>

<TABLE>
<CAPTION>
Illinova Corporation
Six Months Ended June 30, 1998                                           (Millions of Dollars)

                                                                                Illinova
                                       Customer     Wholesale                    Energy        Illinova                     Consoli-
                                       Service        Energy        Nuclear     Partners       Generating     Other           dated
1998
<S>                                    <C>            <C>         <C>              <C>          <C>             <C>           <C>
Revenues from external customers       $744.5         $209.0          $3.0        $   -          $  -         $  -           $956.5
Diversified enterprise revenue             -              -             -          161.3           3.4          1.5           166.2
Intersegment revenue (1)                   -           232.0          (1.2)           -             -            -            230.8
                                       --------------------------------------------------------------------------------------------
   Total Revenue                        744.5          441.0           1.8         161.3           3.4          1.5         1,353.5
Depreciation and amortization
   expense                               33.8           14.9          49.5            -             -           3.0           101.2
Other operating expenses (1)            454.3          435.6         168.4         168.1           8.9          4.4         1,239.7
                                       --------------------------------------------------------------------------------------------
   Operating income (loss)              256.4           (9.5)       (216.1)         (6.8)         (5.5)        (5.9)           12.6
Interest expense                         26.5            8.6          32.3            -             -           5.1            72.5
AFUDC                                    (0.6)          (0.7)         (0.9)           -             -          (0.1)           (2.3)
                                       --------------------------------------------------------------------------------------------
   Income (loss) before taxes           230.5          (17.4)       (247.5)         (6.8)         (5.5)       (10.9)          (57.6)
Income tax expense (benefit)             94.4          (10.0)       (106.2)         (1.7)         (1.3)        (8.5)          (33.3)
Miscellaneous - net                       0.3            0.6            -           (0.1)         (0.2)        (0.5)            0.1
Equity earnings in affiliates              -              -             -           (2.4)         (6.5)          -             (8.9)
Interest revenue                           -              -             -             -             -          (1.4)           (1.4)
                                       --------------------------------------------------------------------------------------------
   Net income (loss) after taxes        135.8           (8.0)       (141.3)         (2.6)          2.5         (0.5)          (14.1)
Preferred dividend requirement            3.5            1.3           5.0            -             -           0.1             9.9
                                       --------------------------------------------------------------------------------------------
Net income (loss) applicable
   to common stock                     $132.3          $(9.3)      $(146.3)        $(2.6)         $2.5        $(0.6)         $(24.0)
- -----------------------------------------------------------------------------------------------------------------------------------
Other information -
   Total assets                      $1,796.3         $715.6      $2,771.7         $53.1        $199.3       $102.9        $5,637.9
   Subsidiary's investment in
      equity method investees              -              -             -            9.6         173.8           -            183.4
   Total expenditures for additions
      to long-lived assets               60.9           27.4          26.2            -             -           2.8           117.3
- -----------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
   Contribution margin (2)             $149.0          $(5.5)      $(122.6)        $(2.6)         $2.5         $2.2           $23.0
   Cash flow (3)                        126.9          121.2        (152.0)          3.5           3.0         19.1           121.7
   Return on net invested capital (4)    11.5%          -1.4%          N/A           7.4%          1.3%         N/A             0.6%
</TABLE>

(1)  Intersegment  revenue priced at 2.5 cents per kwh  delivered.  Intersegment
     expense is reflected  in other  operating  expenses  for Customer  Service.
     Nuclear  reflects a  replacement  power expense for the increment of market
     price over the intersegment  price. Both intersetment  revenue and expenses
     were eliminated for purposes of the Consolidated Statements of Income.
(2)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax),  preferred dividend  requirement.
(3)  Cash flow before financing activities.
(4)  Return on net invested capital calculated as contribution margin divided by
     net invested capital.

                                       24
<PAGE>

ILLINOVA GEOGRAPHIC INFORMATION

(Millions of dollars)
- --------------------------------------------------------------------------------
Year-To-Date June 30,                    1999          1998
- --------------------------------------------------------------------------------
Revenues: (1)
     United States                     $1,019.1     $1,120.6
     Foreign countries (Seven)              8.6          2.1
                                       --------     --------
                                       $1,027.7     $1,122.7
                                       ========     ========


(Millions of dollars)
- --------------------------------------------------------------------------------
June 30,                                 1999        1998
- --------------------------------------------------------------------------------
Long-lived assets: (2)
     United States                     $4,507.5    $4,601.7
     Foreign countries (Nine)             161.8       132.2
                                       --------    --------
                                       $4,669.3    $4,733.9
                                       ========    ========

(1)  Revenues  are  attributed  to  geographic  regions  based  on  location  of
     customer.
(2)  Long-lived   assets   include   plant,   equipment,   and   investments  in
     subsidiaries.


IP - SEGMENTS OF BUSINESS

IP comprises  five  business  groups.  The business  groups and their  principal
services are as follows:

o    IP Customer Service Business Group - transmission,  distribution,  and sale
     of electric energy; distribution,  transportation,  and sale of natural gas
     in Illinois.
o    IP Wholesale Energy Business Group - fossil-fueled  electric  generation in
     Illinois,  wholesale electricity transactions throughout the United States,
     and dispatching activities.
o    IP Nuclear Generation  Business Group - nuclear-fueled  electric generation
     in Illinois.
o    IP  Financial   Business  Group  -  financial  support  functions  such  as
     accounting,  finance, corporate performance, audit and compliance, investor
     relations,  legal, corporate development,  regulatory, risk management, and
     tax services.
o    IP  Support  Services  Business  Group  -  specialized  support  functions,
     including information technology, human resources, environmental resources,
     purchasing and materials management, and public affairs.

Of the above-listed segments, the IP Financial Business Group and the IP Support
Services  Business  Group  did  not  individually  meet  the  minimum  threshold
requirements for separate disclosure and are combined in the Other category.

In 1998,  three  measures were used to judge segment  performance:  contribution
margin, cash flow, and return on net invested capital. In 1999, two measures are
used to judge segment  performance;  contribution margin and cash flow. Omission
of return on net  invested  capital  provides for  increased  focus on near-term
financial needs.

                                       25
<PAGE>

<TABLE>
<CAPTION>

Illinois Power
Three Months Ended June 30, 1999                                                          (Millions of Dollars)

                                                              Customer         Wholesale                                 Total
1999                                                          Service           Energy       Nuclear        Other       Company
<S>                                                          <C>             <C>            <C>           <C>           <C>
Revenues from external customers                               $320.8           $51.8         $5.5          $ -          $378.1
Intersegment revenue (1)                                           -            118.9         37.2            -           156.1
                                                             ------------------------------------------------------------------
  Total Revenue                                                 320.8           170.7         42.7             -          534.2
Depreciation and amortization expense                            23.7            25.7          1.6           0.1           51.1
Other operating expenses (1)                                    209.8           135.3         59.6           5.1          409.8
                                                             ------------------------------------------------------------------
  Operating income (loss)                                        87.3             9.7        (18.5)         (5.2)          73.3
Interest expense                                                 19.3            21.1          3.3           0.2           43.9
AFUDC                                                            (0.4)           (1.6)          -           (0.0)          (2.0)
                                                             ------------------------------------------------------------------
  Income (loss) before taxes                                     68.4            (9.8)       (21.8)         (5.4)          31.4
Income tax expense (benefit)                                     26.2            (4.3)        (7.5)          1.8           16.2
Miscellaneous - net                                               0.2            (1.9)        (1.6)          0.1           (3.2)
Interest revenue                                                    -               -         (0.8)         (0.8)          (1.6)
                                                             ------------------------------------------------------------------
  Net income (loss) after taxes                                  42.0            (3.6)       (11.9)         (6.5)          20.0
Preferred dividend requirement and
  carrying amount over consideration
  paid for redeemed preferred stock                               2.6             2.8         (0.7)          0.3            5.0
                                                             ------------------------------------------------------------------
Net income (loss) applicable to common stock                   $ 39.4          $ (6.4)     $ (11.2)       $ (6.8)        $ 15.0
- -------------------------------------------------------------------------------------------------------------------------------
Other information -
  Total assets (2)                                           $2,315.0        $3,162.4       $199.0        $ 36.3       $5,712.7
  Total expenditures for additions
   to long-lived assets                                          27.2            86.0            -           2.1          115.3
Corporate Measures -
  Contribution margin (3)                                      $ 52.5           $ 7.1      $ (10.0)       $ (6.4)        $ 43.2
  Cash flow (4)                                                  18.1           (51.2)       (26.4)          5.2          (54.3)
  Return on net invested capital (5)                              N/A             N/A          N/A           N/A            N/A
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>


(1)  Intersegment  revenue  priced  at 2.9  cents  per kwh  delivered  for 1999.
     Intersegment  expense is reflected in other operating expenses for Customer
     Service.  Both  intersegment  revenue and   expenses  were  eliminated  for
     purposes of the Consolidated Statements of Income.
(2)  Asset balances recorded by the business groups are significantly  different
     in 1999 due to the  impact  of the  impairment  and  write-off  of  nuclear
     generation, fair market valuation of fossil generation and recording of the
     regulatory asset to the Customer Service Business Group.
(3)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(4)  Cash flow before financing activities.
(5)  Return on net invested capital is no longer a corporate measure in 1999.

                                       26
<PAGE>

<TABLE>
<CAPTION>

Illinois Power
Three Months Ended June 30, 1998                                                           (Millions of Dollars)

                                                          Customer       Wholesale                                   Total
1998                                                      Service         Energy        Nuclear        Other        Company
<S>                                                          <C>              <C>            <C>           <C>           <C>
Revenues from external customers                               $352.9         $ 112.7        $ 1.4          $ -          $467.0
Intersegment revenue (1)                                           -            120.2         (0.6)          0.0          119.6
                                                             ------------------------------------------------------------------
  Total Revenue                                                 352.9           232.9          0.8           0.0          586.6
Depreciation and amortization expense                            16.9             7.5         24.7           1.4           50.5
Other operating expenses (1)                                    209.6           284.9         84.4           3.6          582.5
                                                             ------------------------------------------------------------------
  Operating income (loss)                                       126.4           (59.5)      (108.3)         (5.0)         (46.4)
Interest expense                                                  9.4             2.9         10.8          10.2           33.3
AFUDC                                                            (0.3)           (0.3)        (0.5)         (0.1)          (1.2)
                                                             ------------------------------------------------------------------
  Income (loss) before taxes                                    117.3           (62.1)      (118.6)        (15.1)         (78.5)
Income tax expense (benefit)                                     48.0           (26.7)       (50.9)         (5.4)         (35.0)
Miscellaneous - net                                               0.3            (1.2)          -           (0.2)          (1.1)
Interest revenue                                                   -               -            -           (1.8)          (1.8)
                                                             ------------------------------------------------------------------
  Net income (loss) after taxes                                  69.0           (34.2)       (67.7)         (7.7)         (40.6)
Preferred dividend requirement                                    1.7             0.6          2.5           0.2            5.0
                                                             ------------------------------------------------------------------
Net income (loss) applicable to common stock                   $ 67.3         $ (34.8)     $ (70.2)       $ (7.9)        $(45.6)
- -------------------------------------------------------------------------------------------------------------------------------
Other information -
  Total assets                                               $1,795.3         $ 715.6     $2,771.7        $ 66.4       $5,349.0
  Total expenditures for additions
    to long-lived assets                                         30.7            17.2         19.0           1.5           68.4
- -------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
  Contribution margin (2)                                      $ 73.4         $ (33.6)     $ (61.4)        $(2.1)        $(23.7)
  Cash flow (3)                                                  53.7            78.0        (70.4)        (21.3)          40.0
  Return on net invested capital (4)                              5.6%           -7.4%         N/A           N/A           -0.6%
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>


(1)  Intersegment  revenue  priced  at 2.5  cents  per kwh  delivered  for 1998.
     Intersegment  expense is reflected in other operating expenses for Customer
     Service.  Nuclear reflects a replacement power expense for the increment of
     market  price  over the  intersegment  price  for 1998.  Both  intersegment
     revenue and  expenses  were  eliminated  for  purposes of the  Consolidated
     Statements of Income.
(2)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(3)  Cash flow before financing activities.
(4)  For 1998, return on net invested capital calculated as contribution  margin
     divided by net invested capital.

                                       27
<PAGE>

GEOGRAPHIC INFORMATION

(Millions of dollars)
- --------------------------------------------------------------------------------
Second Quarter                            1999         1998
- --------------------------------------------------------------------------------
Revenues: (1)
     United States                       $378.1        $467.0
                                         ======        ======

(Millions of dollars)
- --------------------------------------------------------------------------------
June 30,                                  1999         1998
- --------------------------------------------------------------------------------
Long-lived assets: (2)
     United States                     $4,442.2      $4,552.4
                                       ========      ========

(1)  Revenues  are  attributed  to  geographic  regions  based  on  location  of
     customer.
(2)  Long-lived   assets   include   plant,   equipment,   and   investments  in
     subsidiaries.

                                       28
<PAGE>

<TABLE>
<CAPTION>

Illinois Power
Six Months Ended June 30, 1999                                                     (Millions of Dollars)

                                                              Customer       Wholesale                                   Total
1999                                                          Service         Energy        Nuclear        Other        Company
<S>                                                             <C>             <C>            <C>           <C>           <C>
Revenues from external customers                               $697.5         $ 145.9         $7.0          $ -          $850.4
Intersegment revenue (1)                                           -            254.8         36.5            -           291.3
                                                             ------------------------------------------------------------------
  Total Revenue                                                 697.5           400.7         43.5            -         1,141.7
Depreciation and amortization expense                            42.2            51.3          3.6            -            97.1
Other operating expenses (1)                                    485.1           261.9        149.0           6.2          902.2
                                                             ------------------------------------------------------------------
  Operating income (loss)                                       170.2            87.5       (109.1)         (6.2)         142.4
Interest expense                                                 38.6            41.0          4.0           0.1           83.7
AFUDC                                                            (0.8)           (2.4)          -             -            (3.2)
                                                             ------------------------------------------------------------------
  Income (loss) before taxes                                    132.4            48.9       (113.1)         (6.3)          61.9
Income tax expense (benefit)                                     50.6            18.0        (43.2)          2.4           27.8
Miscellaneous - net                                                 0.2            (1.8)        (2.1)         (0.3)          (4.0)
Interest revenue                                                   -               -          (1.9)         (3.0)          (4.9)
                                                             ------------------------------------------------------------------
  Net income (loss) after taxes                                  81.6            32.7        (65.9)         (5.4)          43.0
Preferred dividend requirement and
  carrying amount over (under)
  consideration paid for
  redeemed preferred stock                                        5.5             5.8         (1.6)         (0.5)           9.2
                                                             ------------------------------------------------------------------
Net income (loss) applicable to
 common stock                                                  $ 76.1          $ 26.9      $ (64.3)       $ (4.9)        $ 33.8
- -------------------------------------------------------------------------------------------------------------------------------
Other information -
  Total assets (2)                                           $2,315.0        $3,162.4       $199.0        $ 36.3       $5,712.7
  Total expenditures for additions
   to long-lived assets                                          50.1           100.5           -            3.0          153.6
- -------------------------------------------------------------------------------------------------------------------------------
Corporate Measures -
  Contribution margin (3)                                      $102.5          $ 53.8      $ (63.4)       $ (5.3)        $ 87.6
  Cash flow (4)                                                  60.2          (138.8)      (132.7)         86.6         (124.7)
  Return on net invested capital (5)                              N/A             N/A          N/A           N/A            N/A
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>


(1)  Intersegment  revenue  priced  at 2.9  cents  per kwh  delivered  for 1999.
     Intersegment  expense is reflected in other operating expenses for Customer
     Service.  Both  intersegment  revenue  and  expenses  were  eliminated  for
     purposes of the Consolidated Statements of Income.
(2)  Asset balances recorded by the business groups are significantly  different
     in 1999 due to the  impact  of the  impairment  and  write-off  of  nuclear
     generation, fair market valuation of fossil generation and recording of the
     regulatory asset to the Customer Service Business Group.
(3)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(4)  Cash flow before financing activities.
(5)  Return on net invested capital is no longer a corporate measure in 1999.

                                       29
<PAGE>

<TABLE>
<CAPTION>
Illinois Power
Six Months Ended June 30, 1998                                                    (Millions of Dollars)

                                                          Customer       Wholesale                                   Total
1998                                                      Service         Energy        Nuclear        Other        Company
<S>                                                          <C>             <C>            <C>           <C>           <C>
Revenues from external customers                               $744.5         $ 209.0        $ 3.0          $ -          $956.5
Intersegment revenue (1)                                           -            232.0         (1.2)          0.0          230.8
                                                             ------------------------------------------------------------------
  Total Revenue                                                 744.5           441.0          1.8           0.0        1,187.3
Depreciation and amortization expense                            33.8            14.9         49.5           3.0          101.2
Other operating expenses (1)                                    454.3           435.6        168.4           1.7        1,060.0
                                                              -----------------------------------------------------------------
  Operating income (loss)                                       256.4            (9.5)      (216.1)         (4.7)          26.1
Interest expense                                                 26.5             8.6         32.3            -            67.4
AFUDC                                                            (0.6)           (0.7)        (0.9)         (0.1)          (2.3)
                                                             ------------------------------------------------------------------
  Income (loss) before taxes                                    230.5           (17.4)      (247.5)         (4.6)         (39.0)
Income tax expense (benefit)                                     94.4           (10.0)      (106.2)         (6.0)         (27.8)
Miscellaneous - net                                               0.3             0.6            -           0.1            1.0
Interest revenue                                                   -               -            -           (2.0)          (2.0)
                                                             ------------------------------------------------------------------
  Net income (loss) after taxes                                 135.8            (8.0)      (141.3)          3.3          (10.2)
Preferred dividend requirement                                    3.5             1.3          5.0           0.1            9.9
                                                             ------------------------------------------------------------------
Net income (loss) applicable to
  common stock                                                 $132.3           $(9.3)     $(146.3)        $ 3.2         $(20.1)
- -------------------------------------------------------------------------------------------------------------------------------
Other information -
  Total assets                                               $1,795.3         $ 715.6     $2,771.7        $ 66.4       $5,349.0
  Total expenditures for additions
    to long-lived assets                                         60.9            27.4         26.2           2.8          117.3
Corporate Measures -
  Contribution margin (2)                                      $149.0           $(5.5)     $(122.6)        $ 3.0         $ 23.9
  Cash flow (3)                                                 126.9           121.2       (152.0)         10.0          106.1
  Return on net invested capital (4)                             11.5%           -1.4%         N/A           N/A            0.7%
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>


(1)  Intersegment  revenue  priced  at 2.5  cents  per kwh  delivered  for 1998.
     Intersegment  expense is reflected in other operating expenses for Customer
     Service.  Nuclear reflects a replacement power expense for the increment of
     market  price  over the  intersegment  price  for 1998.  Both  intersegment
     revenue and  expenses  were  eliminated  for  purposes of the  Consolidated
     Statements of Income.
(2)  Contribution  margin  represented  by net  income  before  financing  costs
     (net-of-tax) and preferred dividend requirement.
(3)  Cash flow before financing activities.
(4)  For 1998, return on net invested capital calculated as contribution  margin
     divided by net invested capital.

                                       30
<PAGE>

GEOGRAPHIC INFORMATION

(Millions of dollars)
- --------------------------------------------------------------------------------
Year-To-Date June 30,                     1999        1998
- --------------------------------------------------------------------------------
Revenues: (1)
     United States                       $850.4       $956.5
                                         ======       ======

(Millions of dollars)
- --------------------------------------------------------------------------------
June 30,                                  1999        1998
- --------------------------------------------------------------------------------
Long-lived assets: (2)
     United States                     $4,442.2    $4,552.4
                                       ========    ========

(1)  Revenues  are  attributed  to  geographic  regions  based  on  location  of
     customer.
(2)  Long-lived   assets   include   plant,   equipment,   and   investments  in
     subsidiaries.

RESTATEMENT OF THE CONSOLIDATED  FINANCIAL STATEMENTS AS OF JUNE 30, 1999 AND AS
OF DECEMBER 31, 1998

In  February  2000,  Illinova  and  IP  restated  their  consolidated  financial
statements  for the year ended  December  31,  1998 to reflect a revision to the
initial  estimate of the  "Transition  period cost  recovery"  regulatory  asset
established in December 1998 coincident with the impairment of the Clinton Power
Station.  The  effect  of  this  revision  was to  decrease  the  amount  of the
regulatory asset at December 31, 1998, and correspondingly  increase the related
impairment charge by $325.7 million ($196.5 million net of taxes). The impact of
this revision on the consolidated financial statements follows:
<TABLE>
                                 June 30, 1999                 December 31, 1998
- --------------------------------------------------------------------------------------
                             As Previously   As Restated    As Previously  As Restated
                                Reported                      Reported
- --------------------------------------------------------------------------------------
        <S>                     <C>            <C>             <C>            <C>
Illinova Corporation
Common Stock-No par value     $1,319.8       $1,123.3       $1,319.7       $1,123.2

Illinois Power Company
Common Stock-No par vlaue     $1,382.5       $1,186.0       $1,382.4       $1,185.9
- --------------------------------------------------------------------------------------
As a result of the quasi-reorganization, there was no effect of this revision on
"Retained Earnings." For more information, see "Accounting Matters" of "Notes to
Consolidated Financial Statements" on page 15 of this report.
</TABLE>
                                       31
<PAGE>

              ILLINOVA CORPORATION AND ILLINOIS POWER COMPANY

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

        Certain   information   contained  in  this  report  is  forward-looking
information  based on  current  expectations  and plans that  involve  risks and
uncertainties.   Forward-looking   information  includes,  among  other  things,
statements  concerning the impact of regulatory  changes,  plans for the Clinton
facility,  and success in  addressing  Year 2000  issues;  as well as those that
include  the words  "expect,"  "intend,"  "predict,"  "estimate,"  "believe"  or
similar  language.  Although  Illinova  and  IP  believe  these  forward-looking
statements are accurate,  their  businesses are dependent on various  regulatory
issues,  general  economic  conditions and future trends,  and these factors can
cause actual results to differ  materially from the  forward-looking  statements
that have been made.

        The following factors,  in addition to those discussed elsewhere in this
report and in the Annual Report on Form 10-K for the fiscal year ended  December
31,  1998,  and  subsequent  securities  filings  could cause  results to differ
materially  from management  expectations  as suggested by such  forward-looking
statements:  the outcome of state and Federal regulatory  proceedings  affecting
the  restructuring  of the  electric and utility  industry;  the impact on IP of
current  regulations  providing  for rate  reductions  and the phasing in of the
opportunity  for some  customers to choose  alternative  energy  suppliers;  the
effects of  increased  competition  in the future due to,  among  other  things,
deregulation  of certain  aspects of IP's business at both the state and Federal
levels,  and the increasing  popularity of alternative  sources of  electricity,
such  as  co-generation  facilities;   the  effects  of  the  implementation  of
Illinova's  various  strategies  to best  respond to its  changing  business and
regulatory  environment,  including  potential  acquisitions,  focused growth of
unregulated  businesses and other options;  the fluctuating  electricity  supply
demands of IP customers,  which, if increased  beyond IP's generation  capacity,
might result in unplanned outages forcing IP to acquire  additional  supplies in
the  electricity   marketplace  at  uncertain  and  often  volatile  prices  and
availability;  changes  in prices  and costs of fuel;  various  financial  risks
attendant  to selling or shutting  down  Clinton;  ongoing  nuclear  operational
exposures  until  Clinton  is sold or shut down;  the effect of events  that can
occur  in  Illinova's  or  IP's  business  operations  or  in  general  economic
conditions,  that could negatively impact its financial flexibility and costs of
financing;  the impact of the sale or  shutdown  of  Clinton on IP's  ability to
issue  indebtedness  under  its  existing  mortgages;   the  impact  of  current
environmental  regulations on utilities and the expectation  that more stringent
requirements  will be introduced over time,  which are likely to have a negative
financial effect;  various factors affecting  non-utility  investments,  such as
IGC's  investments  in  foreign   countries,   which  are  subject  to  currency
fluctuations, cyclical and sustained economic downturns and political risks; the
inherent risks of active purchases and sales by Illinova, through IEP and IP, of
electricity  and natural gas futures and similar  contracts;  and the ability of
Illinova and IP, their vendors and others to manage Year 2000 issues.

        All  forward-looking  statements in this report are based on information
that  currently is available.  Illinova and IP disclaim any obligation to update
any forward-looking statement.

                                       32
<PAGE>

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  publicly  traded
preferred shares outstanding but its common stock is wholly-owned by Illinova.

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

        IEP is a wholly-owned  subsidiary of Illinova.  IEP develops and markets
energy-related products and services to the unregulated energy market throughout
the United  States and Canada 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 Federal
Energy Regulatory Commission (FERC) and not falling within the business scope of
other Illinova subsidiaries.

        Illinova Power  Marketing,  Inc. (IPMI) is a wholly-owned  subsidiary of
Illinova  created in April 1999,  to become the wholesale  generation  and power
marketing  company to which IP's fossil  generating  assets will be transferred.
The ICC  approved  the  transfer of  generation  assets to IPMI on July 8, 1999.
Other  required  regulatory  approvals  for the transfer of these assets and for
IPMI's marketing activities are being sought.

RESTATEMENT OF THE CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER
31, 1998 AND AS OF JUNE 30, 1999

In February 2000,  Illinova and IP restated their  financial  statements for the
year ended  December  31, 1998 to reflect a revision to the initial  estimate of
the "Transition  period cost recovery"  regulatory asset established in December
1998 coincident with the impairment of the Clinton Power Station.  The effect of
this revision was to decrease the amount of the regulatory asset at December 31,
1998,  and  correspondingly  increase  the related  impairment  charge by $325.7
million  ($196.5  million net of tax).  The net effect of this  revision  was to
increase the previously reported net loss by $196.5 million, or $2.74 per common
share (basic and  diluted).  As a result of the  quasi-reorganization  described
below,  there was no effect of this  revision on "Retained  earnings;"  however,
"Total common stock equity" was reduced by $196.5 million.  The financial tables
and  statements,  the  notes  to  the  consolidated  financial  statements,  and
management's  discussion  and  analysis of  financial  condition  and results of
operations in the 10-Q/A have been modified to reflect these changes.


MERGER AGREEMENT

On June 14, 1999, Illinova and Dynegy Inc. (Dynegy) announced the execution of a
definitive  agreement  for the merger of Illinova  and  Dynegy,  creating a full
service  provider  of energy  products  and  services.  The  combination  brings
together Illinova's  strategically  positioned Midwest generating facilities and
developing national energy services and products with Dynegy, a leading marketer
of energy  products and services in the  country.  Both  Illinova and Dynegy are
leading  independent  power  developers and producers.  The combined  company is
expected to own more than 15,000  megawatts  of  domestic  generating  capacity,
representing the world's most geographically diverse generating asset portfolio.

     Under terms of the merger  agreement,  which were approved  unanimously  by
each  company's  board  of  directors  and  agreed  to  by  Dynegy's  industrial
shareholders (who  collectively own  approximately  76% of Dynegy's  outstanding
common stock), a newly established parent company will acquire all of the shares
of Dynegy  and  Illinova  for a  combination  of stock and cash,  subject to the
satisfaction of certain pre-closing conditions. The merger is conditioned, among
other  things,  upon the  completion of the pending sale of Clinton by Illinova,
the approvals of the FERC, the SEC, the ICC,  Illinova's common stockholders and
the expiration or  termination  of the  Hart-Scott-Rodino  waiting  period.  The
merger is expected to close by the end of the first quarter of 2000.

        Upon closing,  Chuck  Watson,  Chairman and Chief  Executive  Officer of
Dynegy,  will  retain  that  title in the  combined  company.  Charles  Bayless,
Chairman,  President and Chief Executive Officer of Illinova, will continue as a

                                       33
<PAGE>

non-executive  director of the combined  company.  The Board of Directors of the
combined  company,  which will be incorporated in Illinois and  headquartered in
Houston,  Texas, will consist of seven members of the current Illinova Board and
seven members of the current Dynegy Board,  including three designees of Chevron
U.S.A.,  which currently owns an approximate 25% interest in Dynegy.  Illinova's
regulated utility, IP, will be a subsidiary and remain headquartered in Decatur,
IL.

        Various  details  regarding the merger are  discussed  more fully in the
Form S-4 filed by Energy  Convergence  Holding  Company on August 11, 1999,  SEC
File No. 333-84965, which is incorporated herein by reference.

DIVERSIFIED BUSINESS ACTIVITIES

        In February 1999, IEP, a wholly-owned subsidiary of Illinova,  purchased
the  Indiana-based  natural gas  management  operations  of Equitable  Resources
Marketing  Company.  Equitable  Resources  Marketing  (ERM) was a subsidiary  of
Equitable Resources,  Inc., (ERI) of Pittsburgh, PA. ERI is an integrated energy
company that produces, markets, and distributes natural gas and oil.

        In April 1999,  IEP also  purchased  Quality  Energy  Services  (QES), a
Tempe, Arizona based natural gas marketing company.

        In May 1999,  IEP  purchased  the Chicago,  IL based  holdings of Energy
Dynamics, Inc., (EDI) an independent natural gas marketing firm based in Rolling
Meadows, IL.

        The 1998 combined  revenues of ERM, QES, and EDI were  approximately $67
million.


LIQUIDITY AND CAPITAL RESOURCES
     CAPITAL RESOURCES AND REQUIREMENTS

        Cash  flows  from  operations  during  the  first  six  months  of 1999,
supplemented  by external  financing and cash on hand,  were  sufficient to meet
ongoing  operating  requirements  and to service  existing  common and preferred
stock  dividends,   debt  requirements,   IP's  construction   requirements  and
Illinova's investments in its subsidiaries.  However,  Illinova and IP liquidity
has  decreased  as  compared  to June 30,  1998,  as a result of  higher  fossil
maintenance  costs,  increased  marketing  expenses,  and higher  Clinton  costs
combined with lower revenues attributable to the rate reduction mandated by P.A.
90-561.

        Illinova  expects to use future  operating cash flows,  supplemented  by
external  financing,  to meet operating  requirements and to continue to service
existing  debt,  IP's  preferred  and  Illinova  common  stock  dividends,   and
Illinova's  and  IP's  anticipated   subsidiary   investments  and  construction
requirements for the remainder of 1999.

        Illinova  currently has authority to issue an additional $130 million in
debt securities under an existing $300 million shelf registration. Illinova also
has in place a $130 million  Revolving Credit Agreement.  However,  covenants in
the  Illinova  Revolving  Credit  Facility  limit  total  Illinova  debt to $350
million.  At June 30, 1999 $40.5  million of new debt  capacity  was  available.
Prior to  1999,  IP paid  Illinova  dividends  on the IP  common  stock  held by
Illinova to provide  Illinova cash for operations.  IP is limited in its payment
of dividends by the Illinois  Public  Utilities  Act,  which  requires  retained
earnings  equal  to  or  greater  than  the  amount  of  any  proposed  dividend
declaration  or  payment,   and  by  the  Federal  Power  Act,  which  precludes
declaration or payment of dividends by electric utilities "out of money properly
stated in a capital  account." In the first  quarter of 1999, IP did not declare
or pay  dividends  on its common  stock.  In June 1999,  IP declared  and paid a

                                       34
<PAGE>

common stock dividend of $19.5 million.  Based on the Board's  current  dividend
policy,  management  expects IP's retained  earnings to be sufficient to support
Illinova common  dividends.  IP also is allowed to  periodically  repurchase its
common stock from  Illinova in  accordance  with  authority  granted by the ICC,
contingent on IP meeting  certain cash flow tests. IP currently does not satisfy
this cash  flow test and it is  anticipated  that it will not  satisfy  the test
throughout 1999. This test would not interfere with the repurchases,  if any, of
Illinova  equity  shares  using  securitization  proceeds.   Illinova's  current
capacity under the existing  revolving credit  agreement and shelf  registration
should meet its cash  requirements  through the third quarter of 1999.  Illinova
and IP are developing additional financing capabilities to meet future needs.

        From the  beginning of 1999,  through July 16, 1999,  IP redeemed  $57.1
million  of 8.75%  First  Mortgage  Bonds due 2021,  $229  million  of 8.00% New
Mortgage  Bonds due 2023,  $22.9 million of 7.95% First Mortgage Bonds due 2004,
$36.8 million of 6.50% First  Mortgage  Bonds due 1999,  $39.85 million of 7.50%
New  Mortgage  Bonds due 2025,  along  with  154,900  shares of  Monthly  Income
Preferred Securities (MIPS) and 154,295 shares of various serial preferred stock
series.  These securities were retired using funds from securitization  proceeds
received in December 1998.

        On July 20, 1999,  Illinois  Power's 1943 mortgage (First  Mortgage) was
retired.  All remaining  First  Mortgage debt was  substituted  with debt issued
under the 1992 Mortgage (New Mortgage) or defeased.  New Mortgage Bonds of $35.6
million with a coupon rate of 7.5% due 2024 (Series K) and $84.2  million with a
coupon  rate of 7.4% due 2024  (Series L) were  substituted  for First  Mortgage
Bonds  with  identical  terms and  amounts  (replacement  Series U and V).  With
proceeds received from the December 1998  securitization  issuance,  IP defeased
$35.2  million of 6.50% First  Mortgage  Bonds due 1999,  $16.1 million of 7.95%
First  Mortgage  Bonds due 2004 and $84.7 million of 7.375% First Mortgage Bonds
due 2021.

        IP's capital  requirements  for  construction  were  approximately  $150
million  and $115  million  during the six months  ended June 30, 1999 and 1998,
respectively.  Through 2000, IP plans to complete improvements in its generation
facilities  including  pollution control  equipment.  Illinova estimates that it
will spend approximately $380 million for IP construction  expenditures in 1999.
IP  construction  expenditures  for  1999  through  2003 are  expected  to total
approximately  $1.4  billion.  In light of the  December  1998  decision to exit
Clinton and the resulting Clinton impairment,  Clinton capital  expenditures are
expensed as incurred  and are not included in the above  estimates.  On March 2,
1999, in accordance  with a lease agreement  between IP and IP Fuel Company,  IP
paid $62.1 million for partially depleted nuclear fuel in the Clinton reactor to
IP Fuel  Company as a result of Clinton  Nuclear  Station  failing to restart by
January 31, 1999.  The liability for the nuclear fuel was accrued as of December
31, 1998. As part of the Clinton  impairment  entries at year end,  nuclear fuel
was written down to the expected consumption through August 31, 1999.

        Additional   expenditures   may  be  required   during  this  period  to
accommodate   the  transition  to  a  competitive   environment,   environmental
compliance,  system upgrades, and other costs which cannot be determined at this
time.

        In  addition  to  IP  construction   expenditures,   Illinova's  capital
expenditures  for 1999  through  2003 are  expected to include  $520 million for
mandatory debt retirement.  In addition,  IPSPT has long-term debt maturities of
$86.4 million in each of the above years.

        On June 29, 1999, IP issued $250 million of Mortgage Bonds due 2009 with
an interest rate of 7.50%.  Proceeds were used to reduce outstanding  short-term
borrowings.  IP currently  has the authority to issue $500 million in short-term
debt,  which includes $354 million in committed  bank lines of credit.  Of these

                                       35
<PAGE>

authorized  amounts, IP had $347 million at June 30, 1999, in remaining capacity
that may be utilized to issue  commercial  paper and extend floating rate notes.
IP   anticipates   that  this  liquidity  will  be  sufficient  to  address  its
requirements  into the  fourth  quarter  of 1999.  IP is  developing  additional
financial capabilities to meet future needs.

        Following the merger  announcement,  several rating  agencies  responded
with favorable outlooks on IP and Illinova credit quality. Standard & Poor's has
changed its outlook from stable to positive, and presently rates ILN at BBB- and
IP at BBB. Duff & Phelps has placed IP on Credit Watch-Up, with a present rating
of BBB+.  Moody's,  which rates IP bonds at Baal and ILN notes at Baa3, affirmed
its present ratings.


ACCOUNTING MATTERS

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


CLINTON POWER STATION

        In  September  1996,  a leak in a  recirculation  pump  seal  caused  IP
operations  personnel to shut down Clinton.  Clinton returned to service May 27,
1999.

        The prolonged  outage at Clinton has had 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.
In addition,  in March 1999, due to the failure of Clinton to restart by January
31,  1999, a provision  in the lease  agreement  between IP and the Fuel Company
required IP to pay $62.1 million cash for the  acquisition of core fuel in March
1999, to the Fuel Company  Trustee for the benefit of investors in secured Notes
of the Fuel Company.


PECO AND AMERGEN AGREEMENT

        On April 15, 1999, IP announced that it had reached an interim agreement
with AmerGen  Energy  Company  (AmerGen),  whereby  AmerGen  would  purchase and
operate Clinton and IP would buy at least 75 percent of the plant's  electricity
output for the next  several  years.  AmerGen is  jointly  owned by PECO  Energy
Company  (PECO),  and British  Energy.  IP also announced on April 15, 1999, the
execution  of a  revised  management  agreement  (Agreement)  with  PECO for the
operation of Clinton retroactive to April 1, 1999.

        On July 1, 1999,  IP  announced  that it had signed a  definitive  asset
purchase  agreement  with AmerGen.  Basic terms for the sale remain  essentially
unchanged  from the  framework  proposed  in the  interim  agreement.  The asset
purchase  agreement,  signed June 30, 1999,  provides  that IP will  purchase at
fixed  prices,  at least 75  percent  of  Clinton's  electricity  output for its
customers  through  2004 at fixed  prices  which exceed  current  and  projected
wholesale prices.

        Terms of the interim agreement between PECO and IP will remain in effect
until the transaction  closes.  Specifically,  PECO is responsible for Clinton's
direct  operating and capital expenses and continues to manage the station under
the existing  management  contract,  while IP  compensates  PECO for  management
services  based  on  the  amount  of  electricity  the  station  produces.  This
eliminates IP's exposure to the uncertainty  regarding the costs associated with
Clinton's  operations.  In return for  transferring  this financial risk, IP has
agreed to pay PECO a management  fee  calculated  by  multiplying a fixed dollar
amount per MWH times 80 percent of the  electricity  generated at Clinton during

                                       36
<PAGE>

the  interim  period and to allow PECO to retain 20 percent of power  generation
for its  own  use at no  cost.  The  financial  impact  of  this  obligation  is
contingent on two variables:  (1) the capacity levels at which Clinton  operates
and (2) the prices at which the electricity can be sold from time to time. Based
on the terms of the  revised  management  agreement,  the fees  payable  to PECO
during the interim period could equal or exceed the 1999 Clinton-related O&M and
capital  costs for which PECO assumed full  responsibility  commencing  April 1,
1999.

        Under terms of the definitive asset purchase agreement, AmerGen will pay
up to $20 million for the plant and property and will assume full responsibility
and liability for operating and ultimately  decommissioning the nuclear station.
IP will transfer to AmerGen the existing  decommissioning  trust funds, expected
to total  approximately  $95  million  at the end of  1999.  IP will  also  make
additional payments to the decommissioning trust funds intended to be sufficient
to provide for the actual  decommissioning  of Clinton by 2026, when the plant's
operating license is scheduled to expire. These payments may be in the form of a
single  payment of $145 million at closing,  one payment of $124.2  million plus
five annual  payments of $5 million,  or the  provision of an  insurance  policy
purchased by IP.

        Approvals must be obtained from various  regulatory  agencies  including
the NRC, the ICC, and the FERC.  Approvals  for transfer of permits and licenses
must be granted by  numerous  agencies,  including  the  Illinois  Environmental
Protection  Agency,  the Illinois  Department  of Nuclear  Safety,  the Illinois
Department of Natural  Resources,  and others.  Until all approvals are obtained
and the parties  close on the sale, IP will continue to maintain the license for
Clinton's operation and retain the ultimate operating authority over the plant.


REGULATORY MATTERS

     FOSSIL GENERATION FILING

        On July 8, 1999,  the ICC  unanimously  approved IP's filing to sell its
fossil generating assets to Illinova. Subsequently, Illinova intends to transfer
those assets to its wholly owned  subsidiary  IPMI. IPMI, which was incorporated
in April 1999, will become a wholesale  generation and power marketing  company.
On June 11, 1999, IP made a Part 205 filing with the FERC seeking  approval of a
proposed Power Purchase  Agreement  between IP and IPMI. IP also filed a request
with the FERC, on June 29, 1999, seeking approval for asset transfer. A response
to both filings by the FERC is anticipated in the third quarter of 1999.


     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 IP failed to meet
its statutory obligations to provide adequate and reliable service in connection
with last summer's electric supply situation (for further disclosure, see "Power
Supply and  Reliability"  on page 42).  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 provided the
Attorney General with a reliability report. The Attorney General and the Company
agreed on an independent  committee of two outside experts to review the report.
In June, the Attorney  General and IP signed a settlement  agreement in which IP
agrees to provide three annual updates to the reliability report it submitted in
response to the complaint,  and agrees to maintain and in some cases  moderately
enhance  existing systems and maintenance  practices.  The parties filed a joint
motion to dismiss the  complaint on the basis of this  agreement,  which the ICC
unanimously  approved on July 28, 1999. There are no significant costs resulting

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<PAGE>

from  the   agreement.   Although   there  were  limited   calls  for  voluntary
conservation,  and  interruptible  customers  were  curtailed,  no firm load was
interrupted or curtailed during 1998.


     SOYLAND POWER COORDINATION AGREEMENT

        In March 1999, Soyland and IP signed a new Power Coordination  Agreement
(PCA) and  filed  this  agreement  with the FERC.  The new  agreement  no longer
obligates IP to provide  capacity and energy to Soyland with the  exception of a
small amount of capacity for the purpose of supplying  Soyland's load within the
IP Control Area.  Therefore,  the new PCA triggered the immediate recognition of
deferred  revenue  from the previous  Soyland  prepayment  of the base  capacity
charge.  This resulted in an increase in interchange  revenues of $61 million in
the first quarter of 1999.


     UNIFORM FUEL ADJUSTMENT CLAUSE (UFAC)

        Prior to March  1998,  the  costs of fuel for  electric  generation  and
purchased power costs were deferred and recovered from customers pursuant to the
UFAC. On March 6, 1998, IP initiated an ICC  proceeding to eliminate the UFAC in
accordance  with  P.A.  90-561.  A new base  fuel cost  recoverable  under  IP's
electric  tariffs was  established,  effective  on the date of the filing.  UFAC
elimination prevents IP from automatically passing cost increases through to its
customers and exposes IP to the risks and opportunities of cost fluctuations and
operating efficiencies.

Under  UFAC,  IP was subject to annual ICC audits of its actual  allowable  fuel
costs.  Costs could be disallowed,  resulting in negotiations  and/or litigation
with the ICC. In 1998,  IP agreed to  settlements  with the ICC which closed the
audits for all previously  disputed  years. As a result of the  settlements,  IP
electric  customers  received  refunds totaling $32 million during the first six
months of 1999.  These refunds  complete the process of eliminating  the UFAC at
IP.


     DEREGULATION RULEMAKINGS AND TARIFFS

        The Illinois Public Utilities Act was significantly  modified in 1997 by
P.A.  90-561,  but the ICC  continues  to have broad powers of  supervision  and
regulation  with  respect  to the rates and  charges  of IP,  its  services  and
facilities,  extensions or abandonment of service,  classification  of accounts,
valuation and depreciation of property, issuance of securities and various other
matters.  Before a significant plant addition may be included in IP's rate base,
the ICC must determine that the addition is reasonable in cost, prudent and used
and useful in  providing  utility  service to  customers.  IP must  continue  to
provide  bundled retail  electric  service to all who choose to continue to take
service at tariff rates,  and IP must provide  unbundled  electric  distribution
services  to all  eligible  customers  as defined by P.A.  90-561 at rates to be
determined  by the ICC.  During  1998,  pursuant  to  authority  granted in P.A.
90-561,  the ICC issued  rules  associated  with (i)  transactions  between  the
utility  and its  affiliates;  (ii)  service  reliability;  (iii)  environmental
disclosure; and (iv) alternative retail electric supplier certification criteria
and  procedures.  During 1999,  it is expected that the ICC will rule on (i) the
rates  and  terms  associated  with  the  provision  of  delivery  services  for
commercial and industrial  customers;  (ii) establishing the neutral fact finder
price  utilized in (a)  calculating  competitive  transition  costs and (b) IP's
power purchase tariff;  (iii) the competitive  transition cost methodology;  and
(iv)  guidelines  regarding  standards of conduct and functional  separation.  A
proceeding  will be opened in September  1999 to address the issue of unbundling
billing,  metering,  and customer  handling with a final decision to be rendered

                                       38
<PAGE>

prior to the third quarter of the year 2000. The final order on delivery service
tariffs is expected in August of 1999.

        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.

        The extent to which revenues are affected by P.A.  90-561 will depend on
a number of factors  including  future  market  prices for  wholesale and retail
energy,  load growth and demand levels in the current IP service territory,  and
success in marketing to customers outside IP's existing service  territory.  The
impact on net income will depend on, among other things,  the amount of revenues
earned and the cost of doing business.

     OPEN TRANSMISSION ACCESS AND COMPETITION

        In January 1998, IP, in conjunction with eight other transmission-owning
entities,  filed  with  the FERC  for all  approvals  necessary  to  create  and
implement the Midwest Independent  Transmission System Operator, Inc. (MISO). On
September 16, 1998, the FERC issued an order authorizing the creation of a MISO.
The MISO has elected a seven-person independent board of directors. 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.  Participation  in an  ISO  by
utilities  serving  retail  customers  in Illinois  was one of the  requirements
included in P.A. 90-561, enacted in 1997. The MISO has a stated goal to be fully
operational by January 1, 2001.

        See "Open Access and Competition"  under  "Regulatory and Legal Matters"
of the "Notes to  Consolidated  Financial  Statements" on page 14 of this report
for additional information.


YEAR 2000 DATA PROCESSING

        Passing  from  1999 into  2000  creates  a risk that  computer-dependent
processes will fail because the date will be read as "1900."  Illinova began its
Year 2000 (Y2K) project in November 1996. The project scope  encompasses  all of
Illinova's  subsidiaries  including  IP,  IGC,  and IEP. A central  organization
provides overall project  guidance and  coordination  among the business groups,
meeting monthly to share information,  conducting internal project reviews,  and
producing  monthly  status  reports  to  all  levels  of  Illinova   management.
Bi-monthly  Year 2000  readiness  reports are provided to the Illinova  Board of
Directors.

        The Year 2000  project  involves  evaluation  and  testing of  software,
hardware,  and business  processes,  including  mainframe and personal  computer
software  and  hardware,  process  computer  software  and  hardware,  end  user
computing,  telecommunications and networks, vendor purchased packages, embedded
systems, facility control systems, vendors/supplies, financial institutions, and
electronic interfaces with outside agencies.

        The project is divided into two focus areas.  The first focus area deals
with information technology (IT) software,  hardware,  and infrastructure.  This

                                       39
<PAGE>

includes such items as the billing  system,  payroll  system,  accounts  payable
system, personal computers, telecommunications, networks, and mainframes.

        The second focus area targets non-IT  operational  systems and processes
which  encompass  most of the systems and business  processes  actually  used to
deliver  electricity and gas to customers.  This is also the area where embedded
systems  and  microprocessors  are found.  Included in this focus area are power
plant  facilities,  transportation  systems  such as railways  and barges,  fuel
suppliers,   electric  and  gas  transmission   and   distribution   facilities,
substations  and  transformers,  meters,  building  systems  such  as  HVAC  and
security, and financial institutions.

        The overall status of Illinova's Y2K project is illustrated in the table
below.
                                    Illinova Status
                                       July 1999

                                IT                         Non-IT
                          %        Completion  *         %       Completion  *
                       Complete       Date            Complete      Date

Awareness                100        02/01/97   a         100      05/31/98   a

Inventory                100        01/20/97   a         100      02/28/99   a

Assessment               100        05/09/97   a         100      02/28/99   a

Process Analysis         100        11/30/98   a         100      03/31/99   a

Implementation -
  (Mission Critical)     100        06/30/99   a          97      09/30/99   e

Implementation -
  (Important to
   Operations)           100        05/31/99   a          93      10/31/99   e

Contingency Planning     100        07/31/99   a          93      09/30/99   e

*"a" = Actual Completion Date, "e" = Estimated Completion Date

        IP has  completed  its  awareness,  inventory,  assessment,  and process
analysis  phases.  The table  below  provides  further  details  differentiating
between IT and non-IT for IP alone.

                                       IP Status
                                      July 1999

                                IT                         Non-IT
                          %        Completion  *        %       Completion  *
                      Complete        Date           Complete       Date

Awareness               100        02/01/97   a        100      04/29/98   a

Inventory               100        01/20/97   a        100      07/31/98   a

Assessment              100        05/09/97   a        100      09/30/98   a

Process Analysis        100        11/30/98   a        100      02/28/99   a

Implementation -
  (Mission Critical)    100        06/30/99   a        100      07/19/99   a

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<PAGE>

Implementation -
  (Important to
   Operations)          100        05/31/99   a         98      10/31/99   e**

Contingency Planning    100        07/31/99   a        100      06/30/99   a

*"a" = Actual Completion Date, "e" = Estimated Completion Date

** IP important to operations  items were Year 2000 ready on July 30, 1999, with
the exception of one process computer system at Clinton and one process computer
system in our fossil power system.

        IT systems  (such as billing,  payroll,  etc.) and  infrastructure  were
completed  June 30, 1999.  The customer  billing  system,  materials  management
system, accounts payable system, power plant maintenance system, payroll system,
and shareholder  system have been  remediated and are now year 2000 ready.  Year
2000 work has not caused any IT projects to be delayed,  and thus no maintenance
costs have been deferred.

        The United  States  Department  of Energy  (DOE) has  charged  the North
American   Electric   Reliability   Council  (NERC)  with  taking  the  lead  in
facilitating North  American-wide  coordination of electric utilities' Year 2000
efforts.  The collective  efforts of the industry will minimize risks imposed by
Year 2000 to the reliable supply of  electricity.  NERC has in turn assigned the
regional  reliability  councils the responsibility of assessing their respective
networks to ensure reliable  electric supply. IP is taking an active role within
its regional  council  (MAIN) in  assessment  and  renovation of the grid and in
developing contingency plans to minimize any unexpected Year 2000 grid problems.
Illinois  Power is also  participating  in NERC  drills.  IP's power  plants and
transmission  and  distribution  mission critical items are believed to be fully
Year 2000 ready.

        The  total  cost for  achieving  Year 2000  readiness  for  Illinova  is
estimated to be  approximately  $19.6 million  through 1999.  Through the end of
July 1999, $14.8 million, or 76% of the total $19.6 million had been spent.

        Contingency  plans  focus  on  Illinova's  "mission  critical"  business
processes.   Contingency  plans  were  developed  in  accordance  with  industry
guidelines,  such as NERC and the General Accounting Office, and involved senior
management review and approval.  These plans address business continuity and the
ability to deliver essential  products and services to customers in the event of
unexpected  Year  2000  problems.   Drills  will  be  conducted  to  test  these
contingency plans.

        Illinova has assessed potential  worst-case scenarios and determined its
most reasonably likely  worst-case  scenario to be a severe winter storm coupled
with  a  loss  of  major  telecommunications   carrier  causing  disruptions  in
dispatching generation,  dispatching emergency response crews, and communicating
with financial institutions.

        Contingency plans address the above scenarios as well as other potential
scenarios  that could affect the ability to serve our customers and maintain the
financial viability of Illinova.


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.

                                       41
<PAGE>

     NITROGEN OXIDE

        On October 27, 1998,  the U.S. EPA finalized  air  pollution  rules that
will require  substantial  reductions  of NOx emissions in Illinois and 21 other
states.  This rule will  require the  installation  of NOx controls by May 2003,
with each Illinois  utility's  exact  reduction  requirement  to be specified in
1999.  Preliminary  estimates of the capital expenditures needed in 2000 through
2003 to comply  with these new NOx  limitations  range from $90  million to $140
million.  NOx  estimates are included in forecasted  capital  expenditures.  The
legality  of this  proposal,  along  with its  technical  feasibility,  is being
successfully  challenged by a number of states,  utility groups,  and utilities,
including IP.

     EMISSION ALLOWANCE EXCHANGES

        The  value of  emission  allowances  expected  to be given up in  future
periods as the result of exchange  agreements  was recorded in the third quarter
1998 at the current market price and a liability of $9.8 million was recognized.
This  obligation will be adjusted as price  fluctuates  until the allowances are
surrendered.  The market value and recorded  liability of the allowances at June
30, 1999, was $19.9 million.

     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 1999
levels  during  the  years  2008  through  2012 and to make  further  reductions
thereafter.  Before it can take effect,  this  protocol  must be ratified by the
United States Senate.  However,  United States Senate Resolution 98 which passed
95-0 in July 1997,  says the Senate would not ratify an agreement  that fails to
include  commitments for all countries or would damage the economy of the United
States.  Since the Protocol does not contain  these key  elements,  ratification
would be a major  political  issue. It is anticipated  that a ratification  vote
will be delayed until the current  administration feels the Protocol could pass,
or an attractive alternative to the Kyoto Protocol is found.

        IP will face major  changes in the way 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  was in short supply during the 1998 summer  cooling  season
because of an unusually high number of plant outages in the Midwest  region.  IP
bought generation and transmission capacity to prevent firm load curtailment and
took additional steps to avoid power outages,  including upgrading  transmission
lines and equipment,  readying  emergency  procedures,  and returning to service
five units that had been in cold shutdown.  This resulted in a material  adverse
financial impact on Illinova and IP.

        The electric energy market  experienced  unprecedented  prices for power
purchases  during the last week of June 1998. IP's power purchases for 1998 were
$517 million  higher than 1997 due to summer  price  spikes  resulting in a $274
million  increase in power  purchased,  additional  purchases of $215 million to
serve increased  volumes of interchange  sales, and market losses of $28 million
recorded on forward power purchase and sales  contracts as part of the wholesale

                                       42
<PAGE>

trading business.  Income from interchange sales was $382 million higher than in
1997 due to increased sales volumes and higher prices.

        Excluding Clinton,  IP has in excess of 400 MW of additional  generation
on line for the summer of 1999 as compared to 1998. This includes  approximately
235 MW from five oil-fired units which were brought up from cold shutdown during
the summer of 1998 and 176 MW from four natural gas  turbines  that IP installed
which  became  operational  in June  1999.  Total cost for the two  projects  is
approximately  $87 million.  IP also  refurbished  nine gas turbines  already in
service at an approximate cost of $13 million. In addition, the restructuring of
the Soyland PCA  agreement  freed up an additional  287 MW of capacity.  Clinton
returned  to  full  power  operation  on  June  2,  1999,  providing  additional
generating capacity to serve firm load. IP expects to have sufficient generating
capacity  to serve firm load  during the  periods of peak  summer  demand  using
demand-side and supply-side  initiatives  taken in response to the 1998 regional
supply crisis. If generation is lost or demand is at unprecedented  levels, firm
load could be curtailed.


RESULTS OF OPERATIONS

                    THREE MONTHS ENDED JUNE 30, 1999 AND 1998

         Electric  Operations - Electric revenues for the second quarter of 1999
decreased $27.9 million  compared to the second quarter of 1998 primarily due to
the  15%  residential   rate  decrease   effective   August  1,  1998,  and  the
reclassification of revenue-related taxes mandated by deregulation  legislation.
Revenue-related  taxes are now accounted  for as a liability,  and both revenues
and general taxes are reduced with no resultant  impact on net income.  The rate
decrease  resulted in revenue  reductions of $14.9 million in the second quarter
of 1999. The impact of the  reclassification  of $9.8 million in revenue-related
taxes from revenue and general  taxes  negatively  impacted  electric  revenues.
Electric  interchange  revenues  decreased  $56.5  million.   This  decrease  is
attributable  to a decrease  in  interchange  volume  offset by $3.3  million of
income to reflect  mark-to-market  for  forward  contracts  and  options.  Power
purchased decreased $182.8 million due largely to decreased  interchange volume.
During the  quarter,  fuel for  electric  plants  increased  $6.1 million due to
increased  generation.  These factors combined to increase electric margin $92.3
million for the quarter.

         Kilowatt hour (kwh) sales to ultimate consumers  decreased 0.2% for the
quarter due to decreases of 5.3% and 0.3% in the  residential and the commercial
markets,  respectively,  offset by an increase of 2.4% in the industrial market.
Cooling degree days decreased  approximately  36% from 1998 which contributed to
the decrease in sales to the temperature-sensitive markets.

         The equivalent availability of Clinton was 38.9% and 0.0% for the three
months ended June 30, 1999 and 1998, respectively,  due to the return of Clinton
to full power on June 2, 1999.  Clinton  was  previously  unavailable  due to an
outage  which began  September 6, 1996.  The  equivalent  availability  for IP's
coal-fired  plants was 85.3% and 74.4% for the three  months ended June 30, 1999
and 1998, respectively.

         Gas  Operations - For the quarter,  gas margin  increased $0.9 million.
Gas revenues decreased $4.5 million while therm sales (excluding transport) were
constant, caused by lower gas prices. Gas purchased costs decreased $5.4 million
due to the lower gas prices and fewer therms purchased.

                                       43
<PAGE>

        Operation and  Maintenance  Expenses - The current  quarter  decrease of
$15.8  million  is  primarily  due to  PECO's  assumption  of  Clinton's  direct
operating and capital  expenses offset by Clinton  management fees paid to PECO.
For more information,  see "PECO Agreement" of the "Management's  Discussion and
Analysis" on pages 36-37 of this report.

        Depreciation  and  amortization  -  The  increase  in  depreciation  and
amortization  for the second  quarter of 1999 compared to 1998 was $0.4 million.
Due to the Clinton  impairment,  nuclear  depreciation  decreased  approximately
$23.7 million but was offset by  approximately  $18 million for the depreciation
of the adjustment to fair value for the fossil  generation  assets. In addition,
approximately  $5  million  in  expense  related  to  the  amortization  of  the
transition  period  cost  recovery  asset  created  as part of the 1998  Clinton
impairment was recognized in the second quarter.

        Diversified  enterprises -  Diversified  enterprise  revenues  increased
$21.0 million for the second quarter of 1999, which was offset by an increase in
diversified enterprise expenses of $29.5 million. A majority of the net increase
in diversified  enterprise expense over diversified enterprise revenue is due to
merger related transactions.

        Miscellaneous - net - Of the current  quarter  increase of $3.4 million,
$1.6 million of the increase is attributed to the  adjustment in the net present
value  of  the  decommissioning  regulatory  asset.  Revenues  from  non-utility
operations also increased in the second quarter of 1999.

        Interest  expense - The increase in interest expense of $10.9 million in
the second  quarter of 1999 is  primarily  the result of interest  on  increased
long-term  debt of $3.9 million and the  adjustment  in the net present value of
the decommissioning liability of $7.3 million.

        Earnings  (loss) per Common Share - The earnings (loss) per common share
for  Illinova  during the  second  quarter  of 1999 and 1998  resulted  from the
interaction  of all the  factors  discussed  herein  as well as fewer  shares of
common stock outstanding.

                                       44
<PAGE>

RESULTS OF OPERATIONS

                SIX MONTHS ENDED JUNE 30, 1999 AND 1998

        Electric Operations - Electric revenues for the first six months of 1999
decreased  $49.3  million as compared to the first six months of 1998  primarily
due to the 15%  residential  rate  decrease  effective  August 1, 1998,  and the
reclassification of revenue-related taxes mandated by deregulation  legislation.
Revenue-related  taxes are now accounted  for as a liability,  and both revenues
and general taxes are reduced.  The rate decrease resulted in revenue reductions
of  $32.3  million  in  the  first  six  months  of  1999.  The  impact  of  the
reclassification  of $21.1  million in  revenue-related  taxes from  revenue and
general  taxes  negatively  impacted  revenues.  Electric  interchange  revenues
decreased  $58.8  million.  This  decrease  is  attributable  to a  decrease  in
interchange  volume offset by $60.1 million revenue  recognition  resulting from
the restructuring of a Soyland Power  Cooperative  power supply contract.  Power
purchased decreased $228.2 million due largely to decreased  interchange volume.
During the first six months, fuel for electric plants increased $1.8 million due
to increased  generation.  These factors  combined to increase  electric  margin
$118.3 million.

        Kilowatt hour (kwh) sales to ultimate  consumers  increased 3.0% for the
first six months  primarily due to increases of 3.3% and 4.4% in the residential
and  the  commercial  markets,  respectively.   Cooling  degree  days  decreased
approximately   36%  from   1998   which   contributed   to  the   decrease   in
temperature-sensitive markets, which was offset by an increase of 11% in heating
degree days.

        The  equivalent  availability  of Clinton was 19.5% and 0.0% for the six
months ended June 30, 1999 and 1998, respectively,  due to the return of Clinton
to full power on June 2, 1999.  Clinton  was  previously  unavailable  due to an
outage  which began  September 6, 1996.  The  equivalent  availability  for IP's
coal-fired plants was 83.1% and 76.9% for the six months ended June 30, 1999 and
1998, respectively.

        Gas  Operations  - For the six months  ended June 30,  1999,  gas margin
increased $0.8 million.  Gas revenues increased $2.0 million,  while therm sales
(excluding transport) were constant,  caused by colder winter weather, offset by
lower gas prices.  Gas  purchased  costs  increased  $1.1  million due to higher
consumption, offset by lower gas prices and fewer therms purchased.

        Operation and  Maintenance  Expenses - Of the increase for the first six
months of 1999 of $27.1 million,  $29 million  occurred during the first quarter
of 1999 due to higher  operating and  maintenance  expenses  associated with the
Clinton  outage.  This $29 million  includes  $12.4 million of costs which would
have been considered capital additions had Clinton not been impaired. During the
second quarter PECO assumed  Clinton's  direct  operating and capital  expenses,
which were offset by Clinton management fees paid to PECO. For more information,
see "PECO Agreement" of the  "Management's  Discussion and Analysis" on pages 36
and 37 of this report.

        Depreciation  and  Amortization  -  The  decrease  in  depreciation  and
amortization  for the first  six  months  of 1999 as  compared  to 1998 was $4.2
million.  Due  to  the  Clinton  impairment,   nuclear  depreciation   decreased
approximately  $47 million,  but was offset by approximately $36 million for the
depreciation of the adjustment to fair value for the fossil  generation  assets.
In addition,  approximately $5 million in expense related to the amortization of
the  transition  period  cost  recovery  asset  created  as part of the  Clinton
impairment was recognized in the second quarter.

        Diversified  enterprises -  Diversified  enterprise  revenues  increased
$11.2 million for the first six months of 1999,  which was offset by an increase
in  diversified  enterprise  expense  of  $16.3  million.  The net  increase  of

                                       45
<PAGE>

diversified  enterprise  expense  over  diversified  enterprise  revenues is due
primarily to merger related transaction costs.

        Miscellaneous - net - Of the first six months increase of $15.8 million,
$6.5 million is  miscellaneous  credits of IGC.  Interest income  increased $3.0
million  primarily  due to the  investment  of the proceeds of the  transitional
funding  trust  notes  issued in  December  1998 and the  adjustment  in the net
present value of the  decommissioning  regulatory asset. A $2.1 million increase
in  miscellaneous  non-operating  income is  attributable  to the recognition of
nontaxable income related to the decommissioning regulatory asset. Revenues from
non-utility operations also increased during the first six months of 1999.

        Interest  expense - The increase in interest expense of $17.4 million in
the first six months of 1999 is the result of  interest on  increased  long-term
debt  of  $5.6  million,  the  adjustment  in  the  net  present  value  of  the
decommissioning  liability of $14 million,  and increased  amortization  of debt
expense  and  loss on  reacquired  debt of $2.6  million,  offset  by  decreased
interest on short term debt of $4.8 million.

        Earnings  per Common  Share - The earnings per common share for Illinova
during the first six months of 1999 and 1998  resulted from the  interaction  of
all the  factors  discussed  herein  as well as fewer  shares  of  common  stock
outstanding.


RESULTS OF OPERATIONS - ILLINOVA SEGMENTS OF BUSINESS

                     THREE MONTHS ENDED JUNE 30, 1999

Customer Service
For the three months ended June 30, 1999, both the contribution  margin and cash
flow measures were lower than for the corresponding period in 1998. Contribution
margin is lower for the  quarter  by $21  million,  primarily  due to  decreased
electric revenues as discussed below. Other factors contributing to the decrease
are  amortization of the regulatory  asset,  slightly  higher O&M expenses;  and
higher internal charges paid to the Wholesale Energy Group and Nuclear Group for
the purchase of  electricity.  Partially  offsetting  these items were  slightly
lower gas purchases than in 1998.

Cash flow also  reflected a decrease of about $36 million  from 1998,  primarily
due to lower net income.

Transmission, Distribution and Sale of Electric Energy
- ------------------------------------------------------
The Customer  Service  Business  Group  derives its revenues  through  regulated
tariffs.  Its source of electricity is the Wholesale  Energy  business group and
the Nuclear group;  electricity  was provided to the Customer  Service  Business
Group at a fixed 2.9 cents per kwh in 1999 and 2.5 cents per kwh in 1998.

Retail electric  revenues,  excluding  interchange  sales,  for the three months
ended  June 30,  1999  decreased  10.0% over the  corresponding  period in 1998,
primarily due to the 15% residential  decrease  mandated by P.A.  90-561,  which
became  effective July 15, 1998,  voluntarily  advanced by IP from the statutory
effective  date of August 1 and a slight  decrease  in kwh  sales to  customers.
Additionally, operating costs were higher during the three months ended June 30,
1999 compared to the same period in 1998.

                                       46
<PAGE>

Transmission, Distribution and Sale of Natural Gas
- --------------------------------------------------
Revenues are derived through  regulated  tariffs.  During the three months ended
June 30, 1999,  revenues from gas sales and transportation were down 9.1%, while
therms sold and  transported  were up slightly (0.9%) over the second quarter of
1998.  The  decrease  in  revenues  was due to lower gas  prices in 1999,  which
resulted  in lower PGA  revenues.  The  margin  on gas sales and  transportation
increased  3.3% during the period due to a  prior-period  PGA adjustment and the
slight increase in therm sales.


Wholesale Energy
Contribution  margin  during the three  months  ended June 30, 1999 is about $41
million higher than during the  corresponding  period in 1998,  primarily due to
the  significantly  higher  purchased  power  costs  in 1998,  when the  Company
purchased  high-priced  electricity to meet system  requirements  and off-system
sale  obligations.  Partially  offsetting this major variance in power purchases
are lower revenues,  higher  depreciation due to the write-up to market value of
the fossil assets,  higher O&M costs and higher  internal  charges  recorded for
power purchased from the nuclear facility.

Cash flow decreased about $129 million,  primarily due to higher purchased power
costs in 1998, allocated to the Nuclear Group. Higher construction  expenditures
in 1999 to reflect the  installation of gas turbines at the Tilton Energy Center
were also a significant factor in this decrease.

Wholesale  Energy provided power to the Customer  Service  business group at 2.9
cents per kwh during the three months ended June 30, 1999  compared to 2.5 cents
per kwh during the corresponding period in 1998.


Nuclear
Both the contribution  margin and cash flow measures are higher in 1999 compared
to 1998.  Contribution  margin  is higher  than 1998 due to higher  intersegment
revenues in 1999 related to the restart of the plant in 1999, coupled with lower
O&M and depreciation expenses in 1999.

Cash flow was positively impacted by net income.


Illinova Energy Partners, Inc.
For the three months ended June 30, 1999, the contribution  margin is comparable
to the same period in 1998. Cash flow decreased $4.3 million, primarily due to a
negative change in working capital.


Illinova Generating Company
For the three months ended June 30, 1999, the contribution  margin variance from
1998 was less than $1 million. Cash flow increased about $10 million,  primarily
due to a positive change in working capital.


Other
Included in this category are the Financial Business Group, the Support Services
Business  Group,  and Corporate.  These segments did not  individually  meet the
minimum threshold requirements for separate disclosure.

See "Illinova Segments of Business" in the footnotes to the financial statements
on pages 19-25 for additional information.

                                       47
<PAGE>

RESULTS OF OPERATIONS - ILLINOIS POWER SEGMENTS OF BUSINESS

                   THREE MONTHS ENDED JUNE 30, 1999

Customer Service
For the three months ended June 30, 1999, both the contribution  margin and cash
flow measures were lower than for the corresponding period in 1998. Contribution
margin is lower for the  quarter  by $21  million,  primarily  due to  decreased
electric revenues as discussed below. Other factors contributing to the decrease
are  amortization of the regulatory  asset,  slightly  higher O&M expenses,  and
higher internal charges paid to the Wholesale Energy Group and the Nuclear Group
for the purchase of electricity.  Partially offsetting these items were slightly
lower gas purchases than in 1998.

Cash flow also  reflected a decrease of about $36 million  from 1998,  primarily
due to lower net income.


Transmission, Distribution and Sale of Electric Energy
- ------------------------------------------------------
The Customer  Service  Business  Group  derives its revenues  through  regulated
tariffs.  Its source of electricity is the Wholesale  Energy  business group and
the Nuclear group;  electricity  was provided to the Customer  Service  Business
Group at a fixed 2.9 cents per kwh in 1999 and 2.5 cents per kwh in 1998.

Retail electric  revenues,  excluding  interchange  sales,  for the three months
ended  June 30,  1999  decreased  10.0% over the  corresponding  period in 1998,
primarily due to the 15% residential  decrease  mandated by P.A.  90-561,  which
became  effective July 15, 1998,  voluntarily  advanced by IP from the statutory
effective  date of August 1 and a slight  decrease  in kwh  sales to  customers.
Additionally, operating costs were higher during the three months ended June 30,
1999 compared to the same period in 1998.


Transmission, Distribution and Sale of Natural Gas
- --------------------------------------------------
Revenues are derived through  regulated  tariffs.  During the three months ended
June 30, 1999,  revenues from gas sales and transportation were down 9.1%, while
therms sold and  transported  were up slightly (0.9%) over the second quarter of
1998.  The  decrease  in  revenues  was due to lower gas  prices in 1999,  which
resulted  in lower PGA  revenues.  The  margin  on gas sales and  transportation
increased  3.3% during the period due to a  prior-period  PGA adjustment and the
slight increase in therm sales.


Wholesale Energy
Contribution  margin  during the three  months  ended June 30, 1999 is about $41
million higher than during the  corresponding  period in 1998,  primarily due to
the  significantly  higher  purchased  power  costs  in 1998,  when the  Company
purchased  extremely  high-priced   electricity  to  meet  system  requirements.
Partially  offsetting this major variance in power purchases are lower revenues,
higher  depreciation  due to the write-up to market value of the fossil  assets,
higher O&M costs and higher internal  charges  recorded for power purchased from
the nuclear facility.

Cash flow decreased about $129 million,  primarily due to higher purchased power
costs in 1998 allocated to the Nuclear Group. Higher  construction  expenditures
in 1999 to reflect the  installation of gas turbines at the Tilton Energy Center
were also a significant factor in this decrease.

Wholesale  Energy provided power to the Customer  Service  business group at 2.9
cents per kwh during the three months ended June 30, 1999  compared to 2.5 cents
per kwh during the corresponding period in 1998.

                                       48
<PAGE>

Nuclear
Both the contribution  margin and cash flow measures are higher in 1999 compared
to 1998.  Contribution  margin  is higher  than 1998 due to higher  intersegment
revenues in 1999 related to the restart of the plant in 1999, coupled with lower
O&M and depreciation expenses in 1999.

Cash flow was positively affected by net income.


Other
Included in this category are the Financial Business Group, the Support Services
Business  Group,  and  other  corporate   functions.   These  segments  did  not
individually meet the minimum threshold requirements for separate disclosure.


See  "Illinois  Power  Segments of Business" in the  footnotes to the  financial
statements on pages 25-31 for additional information.


RESULTS OF OPERATIONS - ILLINOVA SEGMENTS OF BUSINESS

                     SIX MONTHS ENDED JUNE 30, 1999

Customer Service
For the six months ended June 30, 1999,  both the  contribution  margin and cash
flow measures were lower than for the corresponding period in 1998. Contribution
margin is lower by $46 million,  primarily due to decreased electric revenues as
discussed  below;  higher O&M  expenses;  higher  internal  charges  paid to the
Wholesale  Energy  Group and the  Nuclear  Group due to higher  usage and higher
internal pricing and higher depreciation  expenses,  including  regulatory asset
amortization.

Cash flow is lower by $67 million, due to decreased net income, partially offset
by lower construction expenditures.

Transmission, Distribution and Sale of Electric Energy
- ------------------------------------------------------
The Customer  Service  business  group  derives its revenues  through  regulated
tariffs.  Its source of electricity is the Wholesale  Energy  business group and
the Nuclear group;  electricity  was provided to the Customer  Service  Business
Group at a fixed 2.9 cents per kwh in 1999 and 2.5 cents per kwh in 1998.

Retail electric revenues,  excluding interchange sales, for the six months ended
June 30, 1999  decreased 8.5% over the  corresponding  period in 1998 due to the
15% residential  decrease  mandated by P.A. 90-561,  which became effective July
15, 1998, voluntarily advanced by IP from the statutory effective date of August
1, partially offset by increased kwh sales to customers. Additionally, operating
costs were higher during the six months ended June 30, 1999 compared to the same
period in 1998.

Transmission, Distribution and Sale of Natural Gas
- --------------------------------------------------
Revenues are derived through regulated tariffs. During the six months ended June
30, 1999,  revenues from gas sales and transportation were up 1.1%, while therms
sold and  transported  were up 5.6%. The increase in therm sales was caused by a
return to normal  weather after the  milder-than-usual  weather  experienced  in
1998.  The  margin on gas sales and  transportation  increased  1.0%  during the
period due to increases in both therms sold and therms transported.


Wholesale Energy
Contribution  margin  during the six months  ended June 30,  1999 is $59 million
higher than during the corresponding  period in 1998, due to significantly fewer

                                       49
<PAGE>

power  purchases  in 1999  than in 1998  when the  Company  purchased  extremely
high-priced  electricity to meet system requirements.  Partially offsetting this
major  variance  in power  purchases  are  higher  internal  charges in 1999 for
purchase of  Clinton-generated  electricity,  higher depreciation to reflect the
write-up  of fossil  assets in  December  1998,  higher O&M  expenses  and lower
interchange sales in 1999.

Cash flow is significantly less than 1998 ($260 million) primarily due to higher
power  purchase  costs  in  1998,   allocated  to  the  Nuclear  Group,   higher
construction  expenditures and the receipt of prepaid base capacity charges from
Soyland in 1998.

Wholesale  Energy provided power to the Customer  Service  business group at 2.9
cents per kwh during the six months  ended June 30,  1999  compared to 2.5 cents
per kwh during the corresponding period in 1998.


Nuclear
Contribution margin is higher than 1998 due to increased  intersegment  revenues
in 1999 related to the restart of the plant in 1999, lower  depreciation in 1999
as a result  of the  write-off  of  nuclear  facilities,  and lower  cost  power
purchases to replace Clinton generation.

Cash flow was positively impacted by net income.


Illinova Energy Partners, Inc.
For the six months ended June 30, 1999, the contribution margin is comparable to
the same period in 1998. Cash flow increased about $8 million, primarily related
to changes in working capital.


Illinova Generating Company
For the six months ended June 30, 1999, the  contribution  margin  variance from
1998 was less than $1 million. Cash flow increased about $18 million,  primarily
due to changes in working capital.


Other
Included in this category are the Financial Business Group, the Support Services
Business  Group,  and Corporate.  These segments did not  individually  meet the
minimum threshold requirements for separate disclosure.

See "Illinova Segments of Business" in the footnotes to the financial statements
on pages 19-25 for additional information.

                                       50
<PAGE>

RESULTS OF OPERATIONS - ILLINOIS POWER SEGMENTS OF BUSINESS

                     SIX MONTHS ENDED JUNE 30, 1999

Customer Service
For the six months ended June 30, 1999,  both the  contribution  margin and cash
flow measures were lower than for the corresponding period in 1998. Contribution
margin is lower by $46 million,  primarily due to decreased electric revenues as
discussed  below;  higher O&M  expenses;  higher  internal  charges  paid to the
Wholesale  Energy  Group and the  Nuclear  Group due to higher  usage and higher
internal pricing and higher depreciation  expenses,  including  regulatory asset
amortization.

Cash flow is lower by $67  million,  due to  decreased  net income  and  reduced
changes in working capital, partially offset by lower construction expenditures.

Transmission, Distribution and Sale of Electric Energy
- ------------------------------------------------------
The Customer  Service  business  group  derives its revenues  through  regulated
tariffs.  Its source of electricity is the Wholesale  Energy  business group and
the Nuclear group;  electricity  was provided to the Customer  Service  Business
Group at a fixed 2.9 cents per kwh in 1999 and 2.5 cents per kwh in 1998.

Retail electric revenues,  excluding interchange sales, for the six months ended
June 30, 1999  decreased 8.5% over the  corresponding  period in 1998 due to the
15% residential  decrease  mandated by P.A. 90-561,  which became effective July
15, 1998, voluntarily advanced by IP from the statutory effective date of August
1, partially offset by increased kwh sales to customers. Additionally, operating
costs were higher during the six months ended June 30, 1999 compared to the same
period in 1998.

Transmission, Distribution and Sale of Natural Gas
- --------------------------------------------------
Revenues are derived through regulated tariffs. During the six months ended June
30, 1999,  revenues from gas sales and transportation were up 1.1%, while therms
sold and  transported  were up 5.6%. The increase in therm sales was caused by a
return to normal  weather after the  milder-than-usual  weather  experienced  in
1998.  The  margin on gas sales and  transportation  increased  1.0%  during the
period  due to a prior year  adjustment  to gas costs and by  increases  in both
therms sold and therms transported.

Wholesale Energy
Contribution  margin  during the six months  ended June 30,  1999 is $59 million
higher than during the corresponding  period in 1998, due to significantly fewer
power  purchases  in 1999 than in 1998 when the  Company  purchased  high-priced
electricity  to  meet  system  requirements  and  off-system  sale  obligations.
Partially  offsetting this major variance in power purchases are higher internal
charges  in  1999  for  purchase  of   Clinton-generated   electricity,   higher
depreciation  to reflect the write-up of fossil assets in December 1998,  higher
O&M expenses and lower interchange sales in 1999.

Cash flow is significantly less than 1998 ($260 million) primarily due to higher
purchase power costs in 1998 allocated to the Nuclear Group, higher construction
expenditures  and the receipt of prepaid base  capacity  charges from Soyland in
1998.

Wholesale  Energy provided power to the Customer  Service  business group at 2.9
cents per kwh during the six months  ended June 30,  1999  compared to 2.5 cents
per kwh during the corresponding period in 1998.


Nuclear
Contribution margin is higher than 1998 due to increased  intersegment  revenues
in 1999 related to restart of the plant in 1999, lower depreciation in 1999 as a

                                       51
<PAGE>

result of the write-off of nuclear facilities, and lower cost power purchases to
replace Clinton generation.

Cash flow was positively impacted by net income.


Other
Included in this category are the Financial Business Group, the Support Services
Business  Group,  and Corporate.  These segments did not  individually  meet the
minimum threshold requirements for separate disclosure.

See  "Illinois  Power  Segments of Business" in the  footnotes to the  financial
statements on pages 25-31 for additional information.

                                       52
<PAGE>

ITEM 3. Quantitative and Qualitative Disclosures About Market Risk


RISK MANAGEMENT

        Illinova is exposed to both trading and  non-trading  market risks.  The
non-trading  market risks to which  Illinova is exposed  include  interest  rate
risk, equity price risk,  foreign currency risks, and commodity price risks. The
market  risk  due  to  trading  consists  primarily  of  commodity  price  risk.
Illinova's  risk  management  policy  allows  the  use of  financial  derivative
products,  like  futures,  swaps,  and  certain  types of  options to manage its
positions.  Illinova uses various approaches to measure and monitor market risk,
which include  Value-at-Risk (VaR) and position  sensitivity  measures to market
factors.  VaR is the maximum  potential loss that may be incurred on a portfolio
due to  adverse  movements  in  market  factors,  given a  confidence  level and
specified  holding  period.  VaR does not represent the expected nor the maximum
loss that may  actually  occur  since  gains and losses  may  differ  from those
estimated,  based on actual  fluctuations  in market  factors and changes in the
composition of the portfolio during a given evaluation period.

INTEREST RATE RISK

        Illinova is exposed to interest rate risk from its financing activities,
through issuance of fixed or  variable-rate  debt and acquisition of bank notes.
IP is likewise  exposed to interest  rate risk  resulting  from its  issuance of
fixed or variable-rate  debt,  commercial  paper, and bank notes.  Interest rate
exposure is managed in  accordance  with policy by  limiting  the  variable-rate
exposure to a certain  percentage of  capitalization.  Interest rate  derivative
instruments  are also used when deemed  appropriate to change the composition of
variable to fixed-rate component.  In addition, the sensitivity of the portfolio
to changes in market  factors like interest rate levels and  volatility are also
monitored. At June 30, 1999, there was no interest rate derivative instrument in
use.

        Interest rate VaR is calculated based on a variance-covariance  approach
using the RiskMetrics FourFifteen(TM) model. A 95 percent confidence level and a
one-day  holding period is currently used. The interest rate risk as measured by
VaR at June 30, 1999, March 31, 1999, and December 31, 1998, is given below.

- --------------------------------------------------------------------------------
(Millions of dollars)      June 30, 1999   March 31,1999     December 31,1998
- --------------------------------------------------------------------------------
                                VaR            VaR                  VaR

Illinova, including IP debt     $7.9           $9.2                $14.9

IP debt only                    $7.3           $8.7                $14.2
- --------------------------------------------------------------------------------

        Contributing  factors to the decrease in VaR were the retirement of high
coupon  debt with  maturities  extending  past the year 2020 and an  increase in
commercial  paper levels from that at year end. At December  31,  1998,  VaR was
unusually  high due to the  issuance  of  securitized  debt with the  removal of
called  bonds not  occurring  until  after year end.  The  securitized  debt has
shorter  maturities  than the called  bonds,  which further  contributed  to the
decrease in VaR.

                                       53
<PAGE>

COMMODITY PRICE RISK

Trading Positions

        Illinova is exposed to commodity  price risk through IEP's power trading
activities   and  IP's   trading  and   non-trading   operations.   IEP  uses  a
variance-covariance  approach to calculate VaR,  similar to the  RiskMetrics(TM)
model, to monitor and control its market risk positions. IP measures,  monitors,
and manages its commodity  price risk using a proprietary  VaR model employing a
Monte Carlo simulation  technique.  IP and IEP both use a 95 percent  confidence
level and a five-day  holding  period to monitor their daily trading market risk
positions.  During the first quarter of 1999, the Board approved a change in the
risk management  policy,  to use a five day holding period instead of a four-day
period.  IP's and  IEP's  trading  VaR at June 30,  1999,  March 31,  1999,  and
December 31, 1998, as restated using a five day holding period follow:

- --------------------------------------------------------------------------------
                       June 30, 1999     March 31, 1999     December 31, 1998
- --------------------------------------------------------------------------------
(Millions of Dollars)       VaR            VaR                      VaR

IP                          $0.3           $0.6                    $1.4
IEP                          0.1            0.1                     0.1
- --------------------------------------------------------------------------------

        IP and IEP both use stress and scenario testing to control "event risk",
(i.e., the risk that certain  stressful market events will occur and result in a
loss). In addition, option positions are monitored using sensitivity limits such
as delta  (sensitivity  to price change),  gamma  (sensitivity of delta to price
change), and vega (sensitivity to change in implied volatility).

Non-Trading Positions

        IP is also  exposed to  non-trading  commodity  price risk  through  its
energy generation business.  IP uses physical contracts and is authorized to use
financial  derivative  instruments  to manage its native load  requirements.  To
measure,  monitor,  and  control  the  commodity  price risk of its  non-trading
portfolio,  IP uses the same  proprietary  Monte Carlo model used in the trading
portfolio.

        The Monte Carlo  simulation process used in this VaR model generates the
power  price,  fuel price and load series that are used to value the  generation
assets,  fuel assets,  and  contracts  entered into by the firm (e.g.,  tolling,
forward,  call and put  options).  A  sophisticated  process is used to generate
daily and hourly prices based on historical price series and volatility, wherein
"price spikes," a recent phenomenon in the electricity markets, are modeled into
the price  series.  The VaR  calculated  by this model  represents  the  maximum
reduction in operating margin given a 95 percent  confidence  level.  This means
that  there is only a 5 percent  probability  that the  reduction  in  operating
margin from the expected margin will be greater than what is provided by the VaR
number. In this model, a sufficient  number of scenarios are generated,  whereby
each  scenario  simulates  a one-year  margin  (one-year  holding  period).  The
expected  margin is obtained by averaging  the margins  calculated  from all the
simulation scenarios. The VaR is obtained by sorting the simulation results from
the lowest to highest value and taking the 95th percentile worst case value.

        Since the new VaR  methodology was implemented at the beginning of March
1999,  there is no comparable  VaR number at December 31, 1998.  The VaR for the
non-trading  portfolio  at June 30,  1999 and March 31,  1999,  using a five-day
holding period is $4.9 million and $11.6 million, respectively.

        The overall IP electricity  portfolio is also controlled using quarterly
expected margin reduction  limits. In this process,  the difference  between the
current expected margin and last quarter's  expected margin is monitored against

                                       54
<PAGE>

the quarterly  limits.  To control  "event risk," IP measures the  "Stress-VaR,"
i.e., the VaR calculated using assumptions similar to the events that led to the
electricity  price spikes in June 1998. The  "Stress-VaR"  is monitored  against
stress limits that were approved by the Board of Directors.

FOREIGN OPERATIONS RISK

        Illinova's  foreign  operations risk is its inherent risk of loss due to
the potential  volatility  of emerging  countries  and  fluctuations  in foreign
currency  exchange rates in relation to the U.S.  dollar.  At June 30, 1999, IGC
had invested $78 million in several international operations,  many of which are
joint  ventures.   Primarily,  these  investments  are  with  affiliates  owning
energy-related production, generation, and transmission facilities.

        IGC is exposed to  foreign  currency  risk,  sovereign  risk,  and other
foreign  operations risks,  primarily  through  investments in affiliates of $48
million in Asia and $127 million in South and Central America. To mitigate risks
associated with foreign currency fluctuations, the majority of contracts entered
into by IGC or its affiliates are denominated in or indexed to the U.S. dollar.


OTHER MARKET RISK

        Illinova  is  exposed  to equity  price risk  primarily  through  IP. IP
maintains  trust funds, as required by the NRC, to fund certain costs of nuclear
decommissioning.  As of June 30, 1999, these funds were invested in domestic and
international  equity  securities,  fixed income  securities,  and cash and cash
equivalents.  By maintaining a portfolio that includes equity investments, IP is
maximizing the return to be used to fund nuclear  decommissioning,  which in the
long term will correlate better with inflationary  increases in  decommissioning
costs. The equity securities included in the Corporation's portfolio are exposed
to price  fluctuations in equity markets as a result of fluctuations in interest
rates. IP actively monitors its portfolio by benchmarking the performance of its
investments   against  equity  and  fixed-income   indexes.   It  maintains  and
periodically reviews established target allocations of the trust assets approved
in the investment  policy  statement.  VaR at June 30, 1999, and March 31, 1999,
calculated  based on a 95 percent  confidence level and a one day holding period
follows:

- --------------------------------------------------------------------------------
                                       June 30, 1999           March 31, 1999
- --------------------------------------------------------------------------------
(Millions of dollars)                     VaR                      VaR

IP                                        $1.4                     $1.4
- --------------------------------------------------------------------------------

                                       55
<PAGE>

ITEM 6. Exhibits and Reports on Form 8-K and Form 8-K/A

   (a)   Exhibits

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

   (b)   Reports on Form 8-K since March 31, 1999:

            Report filed on Form 8-K/A for April 19, 1999
                                 Item 5, Other Events: Press Release: Illinova
                                 Releases 1999 first quarter earnings,
                                 Announces expected sale of Clinton to
                                 AmerGen.
                                 Item 7, Exhibits: Illinova Consolidated
                                 Income Statements.

            Report filed on Form 8-K on June 14, 1999
                                 Item  5: Illinova announces merger
                                 agreement  with Dynegy, Inc.

            Report filed on Form 8-K/A for June 18, 1999
                                 Item 5, Other Events: Merger agreement
                                 update, Clinton Power Station update,
                                 fossil generating subsidiary update.
                                 Item 7, Exhibits: Illinova statement
                                 regarding computation of ratios.

            Report filed on Form 8-K on July 12, 1999
                                 Item 5, Other Events: Press release: IP/
                                 AmerGen sign Definitive Agreement for
                                 Sale of Clinton. ICC approval of fossil
                                 generating subsidiary.

            Report filed on Form 8-K/A for July 16, 1999
                                 Item 5, Other Events: Press release:
                                 Illinova Releases 1999 second quarter
                                 Earnings.
                                 Item 7, Exhibits: Illinova Consolidated
                                 Income Statements.

                                       56
<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
                                                 ---------------------------
                                                 Larry F. Altenbaumer
                                                 President on behalf of
                                                 Illinova Corporation







Date: February 29, 2000

                                       57
<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
                                                 ---------------------------
                                                 Larry F. Altenbaumer
                                                 President on behalf of
                                                 Illinois Power Company







Date: February 29, 2000

                                       58
<PAGE>

EXHIBIT INDEX

                                                           PAGE NO. WITHIN
                                                        SEQUENTIAL NUMBERING
EXHIBIT      DESCRIPTION                                       SYSTEM

4         Instruments Defining Rights of Security
          Holders, Including Indentures - Illinois
          Power Company

4.1       Supplemental  Indenture dated as of June
          15, 1999 to Mortgage and Deed of Trust
          dated  November 1, 1943  providing for the
          issuance  of $250,000,000 principal amount
          of 7.5% mortgage bonds.                                 66 - 81

4.2       Supplemental  Indenture dated as of June
          15, 1999 to General Mortgage Indenture
          and Deed of Trust dated as of November 1,
          1992 providing for the issuance of 7.50%
          New Mortgage Bonds.                                     82 - 92

4.3       Supplemental  Indenture dated as of July
          15, 1999 to Mortgage and Deed of  Trust
          dated November 1, 1943  providing for the
          issuance of $35,615,000 principal amount
          of 5.70% Series U Pollution Control Bonds.              93 - 107

4.4       Supplemental  Indenture dated as of July
          15, 1999 to General Mortgage Indenture and
          Deed of Trust dated as of November 1, 1992
          providing for the issuance of $35,615,000
          principal amount of 5.70% Series U
          Pollution Control Bonds.                                108 - 121

4.5       Supplemental  Indenture dated as of July
          15, 1999 to Mortgage and Deed of Trust
          dated November 1, 1943 providing for the
          issuance of $84,150,000 principal amount
          of 7.40% Series V Pollution Control Bonds.             122 - 135

4.6       Supplemental Indenture dated as of July
          15, 1999 to General Mortgage Indenture and
          Deed of Trust dated as of November 1, 1992
          providing for the issuance of $84,150,000
          principal amount of 7.40% series V
          Pollution Control Bonds.                               136 - 148

10.1      Clinton Nuclear Power Station Asset
          Purchase Agreement by and between Illinois
          Power Company, as Seller, and AmerGen
          Energy Company, L.L.C, as Buyer, dated as
          of June 30, 1999.                                      149 - 252

12.1      Computation of ratio of earnings to fixed
          charges for Illinova Corporation.                            253

12.2      Computation of ratio of earnings to fixed
          charges for Illinois Power Company.                          254

27        Financial Data Schedule UT
          (filed herewith)

                                       59
<PAGE>

                                                                     Exhibit 4.1
                             ILLINOIS POWER COMPANY


                                       TO


                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee






                             Supplemental Indenture

                            DATED AS OF JUNE 15, 1999


                                       TO


                           Mortgage and Deed of Trust

                             DATED NOVEMBER 1, 1943

                                       60
<PAGE>

Supplemental Indenture dated as of June 15, 1999 (the "Supplemental Indenture"),
made by and between ILLINOIS POWER COMPANY, a corporation organized and existing
under  the laws of the State of  Illinois  (the  "Company"),  party of the first
part,  and HARRIS TRUST AND SAVINGS BANK, a  corporation  organized and existing
under the laws of the State of Illinois  (the  "Trustee"),  as Trustee under the
Mortgage and Deed of Trust dated November 1, 1943, hereinafter mentioned,  party
of the second part;

         WHEREAS, the Company has heretofore executed and delivered its Mortgage
and Deed of Trust dated November 1, 1943 ("Original Indenture"), to the Trustee,
for the  security of the First  Mortgage  Bonds of the Company  issued and to be
issued thereunder (the "Bonds"); and

         WHEREAS, pursuant to the terms and provisions of the Original Indenture
there were created and authorized by Supplemental Indentures thereto bearing the
following  dates,  respectively,  the First  Mortgage Bonds of the series issued
thereunder and respectively identified opposite such dates:



Date of Supplemental   Identification
    Indenture             of Series                          Called

November 1, 1943      4% Series due 1973          Bonds of the 1973 Series
                      (redeemed)

March 1, 1946         2 7/8% Series due 1976      Bonds of the 1976 Series
                      (paid at maturity)

February 1, 1948      3 1/2% Series due 1978      Bonds of the 1978 Series
                      (paid at maturity)

July 1, 1949          2 7/8% Series due 1979      Bonds of the 1979 Series
                      (paid at maturity)

April 1, 1950         2 3/4% Series due 1980      Bonds of the 1980 Series
                      (paid at maturity)

March 1, 1952         3 1/2% Series due 1982      Bonds of the 1982 Series
                      (paid at maturity)

November 1, 1953      3 1/2% Series due 1983      Bonds of the 1983 Series
                      (paid at maturity)

July 1, 1956          3 3/4% Series due 1986      Bonds of the 1986 Series
                      (paid at maturity)

May 1, 1958           4% Series due 1988          Bonds of the 1988 Series
                      (redeemed)

January 1, 1963       4 1/4% Series due 1993      Bonds of the 1993 Series
                      (paid at maturity)

October 1, 1966       5.85% Series due 1996       Bonds of the 1996 Series
                      (paid at maturity)

                                       61
<PAGE>

Date of Supplemental  Identification
    Indenture            of Series                         Called

January 1, 1968     6 3/8% Series due 1998       Bonds of the First 1998 Series
                    (redeemed)

October 1, 1968     6 3/4% Series due October 1, Bonds of the Second 1998 Series
                    1998 (redeemed)

October 1, 1969     8.35% Series due 1999        Bonds of the First 1999 Series
                    (redeemed)

November 1, 1970    9% Series due 2000           Bonds of the 2000 Series
                    (redeemed)

October 1, 1971     7.60% Series due 2001        Bonds of the 2001 Series
                    (redeemed)

June 1, 1973        7 5/8% Series due 2003       Bonds of the First 2003 Series
                    (redeemed)

May 1, 1974         Pollution Control Series A   Bonds of the Pollution Control
                                                 Series A

September 1, 1974   10 1/2% Series due 2004      Bonds of the First 2004 Series
                    (redeemed)

July 1, 1976        8 3/4% Series due 2006       Bonds of the 2006 Series
                    (redeemed)

May 1, 1977         Pollution Control Series B   Bonds of Pollution Control
                    (redeemed)                   Series B

November 1, 1977    8 1/4% Series due 2007       Bonds of the 2007 Series
                     (redeemed)

August 1, 1978      8 7/8% Series due 2008       Bonds of the 2008 Series
                    (redeemed)

July 1, 1979        9 7/8% Series due July 1,    Bonds of the Second 2004 Series
                    2004 (redeemed)

July 31, 1980       11 3/8% Series due 1987      Bonds of the 1987 Series
                    (redeemed)

August 1, 1980      12 3/8% Series due 2010      Bonds of the 2010 Series
                    (redeemed)

July 1, 1982        14 1/2% Series due 1990      Bonds of the 1990 Series
                    (redeemed)

                                       62
<PAGE>

Date of Supplemental   Identification
    Indenture             of Series                       Called

November 1, 1982     12% Series due 2012         Bonds of the 2012 Series
                     (redeemed)

December 15, 1983    Pollution Control Series C  Bonds of the Pollution Control
                     (redeemed)                  Series C

May 15, 1984         Pollution Control Series D  Bonds of the Pollution Control
                     (redeemed)                  Series D

March 1, 1985        Pollution Control Series E  Bonds of the Pollution Control
                     (redeemed)                  Series E

February 1, 1986     10 1/2% Series due 2016     Bonds of the First 2016 Series
                     (redeemed)

July 1, 1986         9 7/8% Series due 2016      Bonds of the Second 2016 Series
                     (redeemed)

September 1, 1986    9 3/8% Series due 2016      Bonds of the Third 2016 Series
                     (redeemed)

February 1, 1987     Pollution Control Series F  Bonds of the Pollution Control
                     (redeemed)                  Series F

February 1, 1987     Pollution Control Series G  Bonds of the Pollution Control
                     (redeemed)                  Series G

February 1, 1987     Pollution Control Series H  Bonds of the Pollution Control
                     (redeemed)                  Series H

July 1, 1987         Pollution Control Series I  Bonds of the Pollution Control
                     (redeemed)                  Series I

July 1, 1988         10% Series due 1998         Bonds of the Third 1998 Series
                     (redeemed)

July 1, 1991         Pollution Control Series J  Bonds of the Pollution Control
                                                 Series J

June 1, 1992         Pollution Control Series K  Bonds of the Pollution Control
                                                 Series K

June 1, 1992         Pollution Control Series L  Bonds of the Pollution Control
                                                 Series L

July 1, 1992         7.95% Series due 2004       Bonds of the Third 2004 Series

July 1, 1992         8 3/4% Series due 2021      Bonds of the 2021 Series
                     (redeemed)

                                       63
<PAGE>

Date of Supplemental   Identification
    Indenture             of Series                      Called

September 1, 1992    6 1/2% Series due 1999      Bonds of the 1999 Series

February 15, 1993    8% Series due 2023          Bonds of the 2023 Series
                     (redeemed)

March 15, 1993       6 1/8% Series due 2000      Bonds of the 2000 Series

March 15, 1993       6 3/4% Series due 2005      Bonds of the 2005 Series

July 15, 1993        7 1/2% Series due 2025      Bonds of the 2025 Series

August 1, 1993       6 1/2% Series due 2003      Bonds of the Second 2003 Series

October 15, 1993     5 5/8% Series due 2000      Bonds of the Second 2000 Series

November 1, 1993     Pollution Control Series M  Bonds of the Pollution Control
                                                 Series M

November 1, 1993     Pollution Control Series N  Bonds of the Pollution Control
                                                 Series N

November 1, 1993     Pollution Control Series O  Bonds of the Pollution Control
                                                 Series O

April 1, 1997        Pollution Control Series P  Bonds of the Pollution Control
                                                 Series P

April 1, 1997        Pollution Control Series Q  Bonds of the Pollution Control
                                                 Series Q

April 1, 1997        Pollution Control Series R  Bonds of the Pollution Control
                                                 Series R

March 1, 1998        Pollution Control Series S  Bonds of the Pollution Control
                                                 Series S

March 1, 1998        Pollution Control Series T  Bonds of the Pollution Control
                                                 Series T

July 15, 1998        6 1/4% Series due 2002      Bonds of the 2002 Series

September 15, 1998   6% Series due 2003          Bonds of the Third 2003 Series


and

         WHEREAS,  the  Company  desires  to create a new  series of Bonds to be
  issued  under the Original  Indenture,  to be known as First  Mortgage  Bonds,
  7.50% Series due 2009 (the "Bonds of the 2009 Series") and to issue additional
                     Bonds under the Original Indenture; and

                                       64
<PAGE>

     WHEREAS,  the Bonds of the 2009 Series are to be issued to Harris Trust and
Savings  Bank,  as trustee  (the "New  Mortgage  Trustee")  under the  Company's
General  Mortgage  Indenture and Deed of Trust dated as of November 1, 1992 (the
"New  Mortgage")  and are to be owned and held by the New  Mortgage  Trustee  as
"Pledged Bonds" (as defined in the New Mortgage) in accordance with the terms of
the New Mortgage; and

     WHEREAS, the Company, in the exercise of the powers and authority conferred
upon and  reserved to it under the  provisions  of the Original  Indenture,  and
pursuant to appropriate resolutions of the Board of Directors, has duly resolved
and  determined  to make,  execute  and  deliver to the  Trustee a  Supplemental
Indenture in the form hereof for the purposes herein provided; and

     WHEREAS,   all   conditions  and   requirements   necessary  to  make  this
Supplemental  Indenture a valid,  binding and legal  instrument  have been done,
performed and  fulfilled and the execution and delivery  hereof have been in all
respects duly authorized;

             NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

     THAT Illinois Power Company, in consideration of the purchase and ownership
from  time  to  time  of the  Bonds  and the  service  by the  Trustee,  and its
successors,  under the Original  Indenture  and of One Dollar to it duly paid by
the  Trustee at or before the  ensealing  and  delivery of these  presents,  the
receipt whereof is hereby acknowledged,  hereby covenants and agrees to and with
the Trustee and its  successors in the trust under the Original  Indenture,  for
the benefit of the New Trustee and any successor holder of the Bonds as follows:


                                   ARTICLE I.

                    DESCRIPTION OF BONDS OF THE 2009 SERIES.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as "The First  Mortgage  Bonds,  7.50%  Series due 2009" (the "Bonds of the 2009
Series").  The Bonds of the 2009 Series  shall be  executed,  authenticated  and
delivered in  accordance  with the  provisions  of, and shall in all respects be
subject  to,  all  of the  terms,  conditions  and  covenants  of  the  Original
Indenture,  as supplemented  and modified.  The Bonds of the 2009 Series will be
issued only to the New Mortgage  Trustee as security for a series of bonds being
issued under the  Company's New Mortgage and the  supplemental  indenture to the
New  Mortgage  dated as of June 15,  1999 (the "New  Mortgage  Bonds of the 2009
Series").

         The Bonds of the 2009 Series shall be dated as provided in Section 6 of
Article II of the Original  Indenture and for the purposes of said Section 6 the
commencement  of the first interest  period shall be June 29, 1999. All Bonds of
the 2009 Series shall mature on June 15,  2009,  and shall bear  interest at the
rate of SEVEN AND ONE-HALF PER CENT (7.50%) per annum, payable  semi-annually on
June 15 and December 15 of each year,  commencing  December 15, 1999,  until the
principal  sum is paid in full.  Any payment by the Company of principal  of, or
interest  on, any Bonds of the 2009 Series  shall be applied by the New Mortgage
Trustee to the  payment of any  principal  or  interest,  as the case may be, in
respect of the New Mortgage Bonds of the 2009 Series due in accordance  with the
terms of the New Mortgage.

         SECTION 2. The Bonds of the 2009 Series and the  Trustee's  Certificate
shall be substantially in the following forms respectively:

                                       65
<PAGE>

                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                   FIRST MORTGAGE BOND, 7.50% SERIES DUE 2009

No.                                                                 $250,000,000

         ILLINOIS POWER COMPANY, a corporation  organized and existing under the
laws of the State of  Illinois  (the  "Company,"  which term shall  include  any
successor  corporation as defined in the Indenture hereinafter referred to), for
value  received,  hereby  promises to pay to Harris  Trust and  Savings  Bank as
trustee  (the "New  Mortgage  Trustee")  under the  Company's  General  Mortgage
Indenture and Deed of Trust dated as of November 1, 1992 (the "New Mortgage") or
its  registered  assigns,  the  principal  sum of Two Hundred and Fifty  Million
Dollars  ($250,000,000)  on June 15, 2009, in any coin or currency of the United
States of America  which at the time of  payment is legal  tender for public and
private  debts,  and to pay interest  thereon in like coin or currency from June
29,  1999,  payable  semi-annually  on June  15 and  December  15 in each  year,
commencing December 15, 1999, at the rate of SEVEN AND ONE-HALF PER CENT (7.50%)
per annum,  until the Company's  obligation  with respect to the payment of such
principal  shall be discharged as provided in the Indenture.  Both the principal
of, and the  interest  on, this Bond are payable at the agency of the Company in
the City of Chicago, Illinois.

         This First Mortgage Bond shall not be entitled to any benefit under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The provisions of this First Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.

         IN WITNESS  WHEREOF,  Illinois  Power  Company  has  caused  this First
Mortgage Bond to be signed  (manually or by facsimile  signature) in its name by
its  President  or a Vice  President,  and its  corporate  seal (or a  facsimile
thereof) to be hereto affixed and attested (manually or by facsimile  signature)
by its Secretary or an Assistant Secretary.


Dated:                                            ILLINOIS POWER COMPANY,



                                                  By:
                                                     ---------------------------
                                                          Vice President

(Corporate Seal)

ATTEST:


- -------------------------------------
Secretary or Assistant Secretary

                                       66
<PAGE>

                         [FORM OF TRUSTEE'S CERTIFICATE]

         This First  Mortgage Bond is one of the Bonds of the series  designated
therein,  described  in the  within-mentioned  Indenture  and  the  Supplemental
Indenture dated as of June 15, 1999.


                                                  HARRIS TRUST AND SAVINGS BANK,
                                                    Trustee

                                                  By:
                                                     ---------------------------
                                                         Authorized Officer

                            [FORM OF REVERSE OF BOND)

         This First Mortgage Bond is one of a duly authorized  issue of Bonds of
the Company (the "Bonds") in unlimited aggregate principal amount, of the series
hereinafter specified,  all issued and to be issued under and equally secured by
the  Mortgage  and Deed of Trust  (the  "Indenture"),  dated  November  1, 1943,
executed by the Company to Harris  Trust and Savings  Bank (the  "Trustee"),  as
Trustee, to which Indenture and all indentures  supplemental thereto,  including
the  Supplemental  Indenture dated February 15, 1993, which amended Section 1 of
Article IX of the  Indenture,  reference is hereby made for a description of the
properties  mortgaged and pledged,  the nature and extent of the  security,  the
rights of the  registered  owners of the Bonds  and of the  Trustee  in  respect
thereof,  and the terms and conditions  upon which the Bonds are, and are to be,
secured.  The Bonds may be issued in series,  for various  principal  sums,  may
mature  at  different  times,  may bear  interest  at  different  rates  and may
otherwise vary as in the Indenture provided.  This First Mortgage Bond is one of
a series  designated  as the First  Mortgage  Bonds,  7.50% Series Due 2009 (the
"Bonds of the 2009  Series") of the Company,  unlimited  in aggregate  principal
amount,  issued  under  and  secured  by  the  Indenture  and  described  in the
supplemental indenture dated as of June 15, 1999 (the "Supplemental Indenture of
June 15,  1999"),  between  the  Company and the  Trustee,  supplemental  to the
Indenture.

         The Bonds of the 2009 Series are subject to redemption on the terms and
subject to the  conditions set forth in the  Supplemental  Indenture of June 15,
1999.

     To  the  extent   permitted   by,  and  as  provided  in,  the   Indenture,
modifications or alterations of the Indenture,  or of any indenture supplemental
thereto,  and of the rights and obligations of the Company and of the holders of
the  Bonds  and  coupons  may be made  with the  consent  of the  Company  by an
affirmative  vote of the holders of not less than 66 2/3% in amount of the Bonds
entitled to vote then outstanding,  at a meeting of Bondholders  called and held
as provided in the Indenture,  and by an affirmative  vote of the holders of not
less than 66 2/3% in amount of the  Bonds of any  series  entitled  to vote then
outstanding and affected by such modification or alteration, in case one or more
but less than all of the series of Bonds then  outstanding  under the  Indenture
are so affected; provided however, that no such modification or alteration shall
be made which will affect the terms of payment of the  principal of, or interest
or premium, if any, on this First Mortgage Bond.

                                       67
<PAGE>



         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such  declaration  may in certain  events be  rescinded by the holders of a
majority in principal amount of the Bonds outstanding.

         No  recourse  shall be had for the  payment  of the  principal  of,  or
premium or interest on this First  Mortgage  Bond, or for any claim based hereon
or  on  the  Indenture  or  any  indenture  supplemental  thereto,  against  any
incorporator,  or against any stockholder,  director or officer,  as such, past,
present  or  future,  of  the  Company,  or  of  any  predecessor  or  successor
corporation,  either directly or through the Company or any such  predecessor or
successor corporation, whether by virtue of any constitution, statute or rule of
law, or by the  enforcement of any assessment or penalty or otherwise,  all such
liability, whether at common law, in equity, by any constitution,  statute, rule
of law, or  otherwise,  of  incorporators,  stockholders,  directors or officers
being  released by every owner hereof by the  acceptance of this First  Mortgage
Bond and as part of the consideration  for the issue hereof,  and being likewise
released by the terms of the Indenture;  provided,  however, that nothing herein
or in the  Indenture  or any  indenture  supplemental  thereto  contained  shall
prevent  the  enforcement  of the  liability,  if  any,  of any  stockholder  or
subscriber  to capital  stock upon or in respect of shares of capital  stock not
fully paid up.

         Notwithstanding  any  provision  in  the  Indenture,  the  Supplemental
Indenture  of June 15, 1999 or this First  Mortgage  Bond to the  contrary,  any
payment by the Company  under the New Mortgage of principal  of, or interest on,
bonds which shall have been  authenticated  and delivered under the New Mortgage
(the "New Mortgage Bonds of the 2009 Series") upon the basis of the issuance and
delivery to the New Mortgage  Trustee of the Bonds of the 2009 Series shall,  to
the extent  thereof,  be deemed to satisfy and discharge  the  obligation of the
Company  to make a payment  of  principal  or  interest,  as the case may be, in
respect of this First Mortgage Bond which is then due.

         This First  Mortgage Bond  constitutes a "Pledged  Bond" (as defined in
the  New  Mortgage)  and  is  subject  to all of  the  rights  and  restrictions
applicable to Pledged Bonds as set forth in the New Mortgage.  Without  limiting
the  generality of the  foregoing,  this First Mortgage Bond shall be subject to
surrender by the New  Mortgage  Trustee in  accordance  with the  provisions  of
Section  7.03 of the New  Mortgage.  To the extent  that any  provisions  in the
Indenture,  the  Supplemental  Indenture of June 15, 1999 or this First Mortgage
Bond are inconsistent with the provisions relating to Pledged Bonds that are set
forth in the New Mortgage, the provisions of the New Mortgage shall apply.

         SECTION 3.  Notwithstanding  any  provision in the Original  Indenture,
this  Supplemental  Indenture,  or the Bonds of the 2009 Series to the contrary,
any payment by the Company  under the New Mortgage of principal  of, or interest
on, New  Mortgage  Bonds of the 2009 Series upon the basis of the  issuance  and
delivery to the New Mortgage  Trustee of the Bonds of the 2009 Series shall,  to
the extent thereof, be deemed to satisfy and discharge the obligation of the

                                       68
<PAGE>

Company to make any payment of  principal  or  interest,  as the case may be, in
respect of the Bonds of the 2009 Series which is then due.

         SECTION 4. The Bonds of the 2009 Series constitute  "Pledged Bonds" (as
defined  in the  New  Mortgage)  and  are  subject  to all  of  the  rights  and
restrictions  applicable  to  Pledged  Bonds as set  forth in the New  Mortgage.
Without  limiting the generality of the foregoing,  the Bonds of the 2009 Series
shall be subject to surrender by the New Mortgage Trustee in accordance with the
provisions  of  Section  7.03  of the  New  Mortgage.  To the  extent  that  any
provisions in the Original Indenture,  this Supplemental  Indenture or the Bonds
of the 2009  Series are  inconsistent  with the  provisions  relating to Pledged
Bonds that are set forth in the New Mortgage, the provisions of the New Mortgage
shall apply.


                                   ARTICLE II.

                       ISSUE OF BONDS OF THE 2009 SERIES.

         SECTION  1. The  Company  hereby  exercises  the  right to  obtain  the
authentication of $250,000,000  principal amount of additional Bonds pursuant to
the terms of Section 6 of Article III of the Original  Indenture in substitution
for  refundable  Bonds.  All such  additional  Bonds  shall be Bonds of the 2009
Series.

         SECTION  2. Such  Bonds of the 2009  Series  may be  authenticated  and
delivered prior to the filing for recordation of this Supplemental Indenture.

         SECTION 3.  Notwithstanding  any provision in the Original Indenture to
the  contrary,  execution  of the  Bonds of the 2009  Series  on  behalf  of the
Company,  and the attesting of the corporate seal of the Company  affixed to the
Bonds of the 2009 Series by the  officers of the Company  authorized  to do such
acts by Section 12 of Article II of the Original  Indenture  may be validly done
either by the manual or the facsimile  signatures of such authorized officers of
the Company.


                                  ARTICLE III.

                                   REDEMPTION.

         The  Company at its option  may,  at any time,  redeem the Bonds of the
2009 Series,  in whole or in part (if in part, by lot or by such other method as
the Trustee shall deem fair or appropriate) prior to maturity, on any date, upon
payment of a redemption  price equal to the greater of (i) 100% of the principal
amount of the Bonds of the 2009  Series to be redeemed  plus  accrued and unpaid
interest thereon, if any, from the last interest payment date to the date of

                                       69
<PAGE>

redemption,  or (ii) the Make Whole Amount plus accrued and unpaid interest,  if
any, from the last interest payment date to the redemption date.

     "Make Whole Amount" means, with respect to a Bond of the 2009 Series at any
time,  the sum of the present  values of the  Remaining  Scheduled  Payments (as
defined  below)  discounted,  on a  semiannual  basis  assuming  a 360-day  year
consisting  of twelve 30-day  months),  at a rate equal to the Treasury Rate (as
defined below) plus 20 basis points.  The Make Whole Amount shall be computed as
of  the  third  Business  Day  prior  to the  applicable  redemption  date,  and
certified, by an Investment Banker (as defined below).

     "Investment Banker" means an independent  investment banking institution of
good standing selected by the Company.

     "Remaining Scheduled Payments" means the remaining scheduled payment of the
principal  and interest  that would be due if such Bonds of the 2009 Series were
not  redeemed.  However,  if the  redemption  date is not a  scheduled  interest
payment date, the amount of the next succeeding  scheduled  interest  payment on
such Bond of the 2009 Series  will be reduced by the amount of interest  accrued
on such New Mortgage Bonds of the 2009 Series to such redemption date.

     "Treasury  Rate"  means an annual rate equal to the  semiannual  equivalent
yield to maturity of the Comparable Treasury Issue (as defined below),  assuming
a price for the  Comparable  Treasury  Issue  (expressed  as a percentage of its
principal amount) equal to the Comparable  Treasury Price (as defined below) for
the  redemption  date.  The  semiannual  equivalent  yield to  maturity  will be
computed as of the third Business Day immediately preceding the redemption date.

     "Comparable  Treasury  Issue"  means the United  States  Treasury  security
selected by Salomon Smith Barney Inc. or J.P.  Morgan  Securities  Inc. or their
affiliates as having a maturity comparable to the remaining term of the Bonds of
the  2009  Series  that  would be  utilized,  at the  time of  selection  and in
accordance with customary financial practice, in pricing new issues of corporate
debt securities of comparable maturity to the remaining term of the Bonds of the
2009 Series.

     "Comparable  Treasury Price" means the average of three Reference  Treasury
Dealer  Quotations (as defined below) obtained by the Trustee for the redemption
date.

     "Reference  Treasury  Dealers"  means  Salomon  Smith  Barney Inc. and J.P.
Morgan  Securities Inc. (so long as they continue to be primary U.S.  Government
securities dealers) and any one other primary U.S. Government  securities dealer
chosen by the  Company.  If either  Salomon  Smith  Barney Inc.  or J.P.  Morgan
Securities Inc. ceases to be a primary U.S.  Government  securities  dealer, the
Company  will  appoint in its place  another  nationally  recognized  investment
banking firm that is a primary U.S. Government securities dealer.

     "Reference  Treasury Dealer Quotation" means the average,  as determined by
the  Trustee,  of the bid and asked  prices for the  Comparable  Treasury  Issue
(expressed  in each case as a  percentage  of its  principal  amount)  quoted in


                                       70
<PAGE>


writing to the Trustee by a  Reference  Treasury  Dealer at 3:30 p.m.,  New York
City time, on the third Business Day preceding the redemption date.


                                   ARTICLE IV.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees  to  perform  the same  upon the terms  and  conditions  in the  Original
Indenture set forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture  or the due  execution  hereof  by the  Company  or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article XIII of the  Original  Indenture  shall
         apply to this Supplemental  Indenture with the same force and effect as
         if the  same  were  herein  set  forth in full,  with  such  omissions,
         variations and modifications  thereof as may be appropriate to make the
         same conform to this Supplemental Indenture.


                                   ARTICLE V.

                            MISCELLANEOUS PROVISIONS.

         This  Supplemental  Indenture  may be  simultaneously  executed  in any
number of counterparts,  each of which when so executed shall be deemed to be an
original;  but such counterparts shall together  constitute but one and the same
instrument.

                                       71
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Supplemental
Indenture to be executed on its behalf by its Chairman and President, one of its
Executive Vice Presidents,  one of its Senior Vice Presidents or one of its Vice
Presidents  and its corporate  seal to be hereto  affixed and said seal and this
Supplemental  Indenture to be attested by its  Secretary or one of its Assistant
Secretaries;  and said  Harris  Trust  and  Savings  Bank,  in  evidence  of its
acceptance of the trust hereby created,  has caused this Supplemental  Indenture
to be executed on its behalf by its President or one of its Vice  Presidents and
its  corporate  seal to be hereto  affixed  and said seal and this  Supplemental
Indenture to be attested by its Secretary or one of its  Assistant  Secretaries,
all as of the date first written above.

                                          ILLINOIS POWER COMPANY


                                          By
                                            ------------------------------------
                                               Robert A. Schultz
                                               Vice President - Finance


(CORPORATE SEAL)


ATTEST:


- ---------------------------
Leah Manning Stetzner
Corporate Secretary

                                          HARRIS TRUST AND SAVINGS BANK, Trustee


                                          By
                                            ------------------------------------
                                               J. Bartolini
                                               Vice President

(CORPORATE SEAL)

ATTEST:


- ------------------------------
C. Potter
Assistant Secretary

                                       72
<PAGE>

STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF MACON      )

         BE IT REMEMBERED,  that on this ____ day of _____, 1999, before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A.  Schultz,  Vice  President - Finance and Leah Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered  the said  instrument as their free and voluntary act as such officers
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.



                                          --------------------------------------
                                          Notary Public, Macon County, Illinois

My Commission Expires on _________________.

(NOTARIAL SEAL)


STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF COOK       )

         BE IT REMEMBERED,  that on this ___ day of ______, 1999, before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came  J.  Bartolini,   Vice  President,  and  C.  Potter,  Assistant
Secretary,  of Harris Trust and Savings  Bank,  a  corporation  duly  organized,
incorporated  and  existing  under  the laws of the State of  Illinois,  who are
personally  known to me to be such officers,  and who are personally known to me
to be the same persons who executed as such  officers the within  instrument  of
writing,  and such  persons  duly  acknowledged  that they  signed,  sealed  and
delivered  the said  instrument as their free and voluntary act as such officers
and as the free and  voluntary act of said Harris Trust and Savings Bank for the
uses and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          --------------------------------------
                                          Notary Public, Cook County, Illinois

My Commission Expires on ______________.
(NOTARIAL SEAL)

                                       73
<PAGE>

         Return To:                       This Instrument Was Prepared By:

         ILLINOIS POWER COMPANY           SCHIFF HARDIN & WAITE
         Real Estate Dept. F-14           6600 Sears Tower
         500 S. 27th Street               233 South Wacker Drive
         Decatur, IL 62525                Chicago, IL  60606

                                       74
<PAGE>

                                                                     Exhibit 4.2
                             ILLINOIS POWER COMPANY


                                       TO

                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee

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


                             Supplemental Indenture

                            DATED AS OF JUNE 15, 1999

                                       TO

                  General Mortgage Indenture and Deed of Trust

                          DATED AS OF NOVEMBER 1, 1992

                                       75
<PAGE>

Supplemental Indenture dated as of June 15, 1999 (the "Supplemental Indenture"),
made by and between ILLINOIS POWER COMPANY, a corporation organized and existing
under  the laws of the State of  Illinois  (the  "Company"),  party of the first
part,  and HARRIS TRUST AND SAVINGS BANK, a  corporation  organized and existing
under the laws of the State of Illinois  (the  "Trustee"),  as Trustee under the
General  Mortgage  Indenture  and Deed of Trust  dated as of  November  1, 1992,
hereinafter mentioned, party of the second part;

         WHEREAS,  the Company has heretofore executed and delivered its General
Mortgage  Indenture  and  Deed of  Trust  dated  as of  November  1,  1992  (the
"Indenture"),  to the  Trustee,  for the  security  of the Bonds of the  Company
issued and to be issued thereunder (the "Bonds"); and

         WHEREAS,  pursuant to the terms and  provisions of the Indenture  there
were created and  authorized  by  Supplemental  Indentures  thereto  bearing the
following  dates,  respectively,  the New  Mortgage  Bonds of the series  issued
thereunder and respectively identified opposite such dates:

Date of Supplemental   Identification
   Indenture              of Series                        Called
- --------------------   --------------                      ------
February 15, 1993   8% Series due 2023          Bonds of the 2023 Series
March 15, 1993      6 1/2% Series due 2000      Bonds of the 2000 Series
March 15, 1993      6 3/4% Series due 2005      Bonds of the 2005 Series
July 15, 1993       7 1/2% Series due 2025      Bonds of the 2025 Series
August 1, 1993      6 1/2% Series due 2003      Bonds of the First 2003 Series
October 15, 1993    5 5/8% Series due 2000      Bonds of the Second 2000 Series
November 1, 1993    Pollution Control Series M  Bonds of the Pollution Control
                                                Series M
November 1, 1993    Pollution Control Series N  Bonds of the Pollution Control
                                                Series N
November 1, 1993    Pollution Control Series O  Bonds of the Pollution Control
                                                Series O
April 1, 1997       Pollution Control Series P  Bonds of the Pollution Control
                                                Series P
April 1, 1997       Pollution Control Series Q  Bonds of the Pollution Control
                                                Series Q
April 1, 1997       Pollution Control Series R  Bonds of the Pollution Control
                                                Series R
March 1, 1998       Pollution Control Series S  Bonds of the Pollution Control
                                                Series S
March 1, 1998       Pollution Control Series T  Bonds of the Pollution Control
                                                Series T
July 15, 1998       6 1/4% Series due 2002      Bonds of the 2002 Series
September 15, 1998  6% Series due 2003          Bonds of the Second 2003 Series


         WHEREAS,  the  Company  desires  to create a new  series of Bonds to be
issued under the Indenture,  to be known as New Mortgage Bonds, 7.50% Series due
2009 (the "New Mortgage Bonds of the 2009 Series"); and

         WHEREAS,  the  Company,  in the  exercise  of the powers and  authority
conferred  upon and reserved to it under the  provisions of the  Indenture,  and
pursuant to appropriate resolutions of the Board of Directors, has duly resolved
and  determined  to make,  execute  and  deliver to the  Trustee a  Supplemental
Indenture in the form hereof for the purposes herein provided; and

         WHEREAS,  all  conditions  and  requirements  necessary  to  make  this
Supplemental  Indenture a valid,  binding and legal  instrument  have been done,
performed and  fulfilled and the execution and delivery  hereof have been in all
respects duly authorized;

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

                                       76
<PAGE>

         THAT  Illinois  Power  Company,  in  consideration  of the purchase and
ownership from time to time of the Bonds and the service by the Trustee, and its
successors, under the Indenture and of One Dollar to it duly paid by the Trustee
at or before the ensealing and delivery of these  presents,  the receipt whereof
is hereby acknowledged,  hereby covenants and agrees to and with the Trustee and
its  successors in the trust under the  Indenture,  for the benefit of those who
shall hold the Bonds as follows:


                                   ARTICLE I.

              DESCRIPTION OF NEW MORTGAGE BONDS OF THE 2009 SERIES.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as the "New Mortgage  Bonds of the 2009  Series." The New Mortgage  Bonds of the
2009 Series shall be executed,  authenticated  and delivered in accordance  with
the  provisions  of, and shall in all  respects be subject to, all of the terms,
conditions and covenants of the Indenture, as supplemented and modified.

         The  commencement  of the first interest period shall be June 29, 1999.
All New Mortgage  Bonds of the 2009 Series  shall  mature on June 15, 2009,  and
shall bear  interest  at the rate of SEVEN AND  ONE-HALF  PER CENT  (7.50%)  per
annum, payable semi-annually on June 15 and December 15 in each year, commencing
December  15,1999,  until the principal sum is paid in full. The person in whose
name any of the New  Mortgage  Bonds of the 2009  Series are  registered  at the
close of business on any record date (as  hereinafter  defined)  with respect to
any interest  payment date shall be entitled to receive the interest  payable on
such interest payment date notwithstanding the cancellation of such New Mortgage
Bonds of the 2009 Series upon any transfer or exchange  subsequent to the record
date and prior to such interest payment date; provided,  however, that if and to
the extent the Company  shall default in the payment of the interest due on such
interest  payment date,  such  defaulted  interest  shall be paid as provided in
Section 3.07 of the Indenture.

         The term  "record  date" as used in this  Section  with  respect to any
interest  payment  date shall mean the June 1 or December 1, as the case may be,
next  preceding the  semi-annual  interest  payment date,  or, if such June 1 or
December 1 shall be a legal  holiday or a day on which banking  institutions  in
the City of Chicago,  Illinois,  are  authorized by law to close,  then the next
preceding  day  which  shall  not be a  legal  holiday  or a day on  which  such
institutions are so authorized to close.

         SECTION 2. The New  Mortgage  Bonds of the 2009 Series  shall be issued
only as registered Bonds without coupons of the  denomination of $1,000,  or any
integral multiple of $1,000,  appropriately  numbered. The New Mortgage Bonds of
the 2009 Series may be exchanged,  upon surrender thereof,  at the agency of the
Company in the City of Chicago,  Illinois, for one or more New Mortgage Bonds of
the  2009  Series  of other  authorized  denominations,  for the same  aggregate
principal  amount,  subject  to  the  terms  and  conditions  set  forth  in the
Indenture.

         New Mortgage  Bonds of the 2009 Series may be exchanged or  transferred
without  expense to the registered  owner thereof except that any taxes or other
governmental  charges  required  to be paid with  respect  to such  transfer  or
exchange  shall be paid by the  registered  owner  requesting  such  transfer or
exchange as a condition precedent to the exercise of such privilege.

         SECTION 3. The New Mortgage Bonds of  the 2009 Series and the Trustee's
Certificate  of  Authentication  shall be  substantially in  the following forms
respectively:

                                       77
<PAGE>

                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                    NEW MORTGAGE BOND, 7.50% SERIES DUE 2009

No                                                                  $250,000,000

         ILLINOIS POWER COMPANY, a corporation  organized and existing under the
laws of the State of  Illinois  (the  "Company,"  which term shall  include  any
successor  corporation as defined in the Indenture hereinafter referred to), for
value received,  hereby promises to pay to Cede & Co. or registered assigns, the
principal sum of Two Hundred and Fifty Million  Dollars  ($250,000,000)  on June
15, 2009,  in any coin or currency of the United  States of America which at the
time of  payment  is legal  tender for  public  and  private  debts,  and to pay
interest  thereon  in  like  coin  or  currency  from  June  29,  1999,  payable
semi-annually on June 15 and December 15 in each year,  commencing  December 15,
1999,  at the rate of SEVEN AND ONE-HALF  PER CENT (7.50%) per annum,  until the
Company's  obligation  with  respect to the payment of such  principal  shall be
discharged as provided in the Indenture hereinafter  mentioned.  The interest so
payable on any June 15 or  December  15,  will,  subject  to certain  exceptions
provided in the Supplemental Indenture dated as of June 15, 1999, be paid to the
person  in whose  name  this New  Mortgage  Bond is  registered  at the close of
business on the immediately  preceding June 1 or December 1, as the case may be.
Both  principal  of, and interest on, this New Mortgage  Bond are payable at the
agency of the Company in the City of Chicago, Illinois.

         This New Mortgage  Bond shall not be entitled to any benefit  under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The  provisions  of this New Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.

                      Illinois Commerce Commission No. 6120

         IN WITNESS WHEREOF, Illinois Power Company has caused this New Mortgage
Bond  to be  signed  (manually  or by  facsimile  signature)  in its  name by an
Authorized  Executive  Officer,  as defined in the Indenture,  and its corporate
seal (or a facsimile  thereof) to be hereto affixed and attested (manually or by
facsimile  signature)  by an  Authorized  Executive  Officer,  as defined in the
Indenture.

Dated:                                           ILLINOIS POWER COMPANY,



                                                 By:
                                                     ---------------------------
                                                    Authorized Executive Officer

(Corporate Seal)

ATTEST:


- -----------------------------------
   Authorized Executive Officer

                                       78
<PAGE>

                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION]

         This New  Mortgage  Bond is one of the Bonds of the  series  designated
therein  referred to in the  within-mentioned  Indenture dated as of November 1,
1992 and the Supplemental Indenture dated as of June 15, 1999.


                                                 HARRIS TRUST AND SAVINGS BANK,
                                                     Trustee


                                                 By:
                                                    ----------------------------
                                                       Authorized Signatory


                            [FORM OF REVERSE OF BOND]

         This New Mortgage  Bond is one of a duly  authorized  issue of Bonds of
the Company (the "Bonds") in unlimited aggregate principal amount, of the series
hereinafter specified,  all issued and to be issued under and equally secured by
a General Mortgage  Indenture and Deed of Trust (the  "Indenture"),  dated as of
November 1, 1992,  executed by the Company to Harris Trust and Savings Bank (the
"Trustee"),  as Trustee,  to which  Indenture  and all  indentures  supplemental
thereto  reference is hereby made for a description of the properties  mortgaged
and pledged,  the nature and extent of the  security,  the rights of  registered
owners of the Bonds and of the  Trustee  in respect  thereof,  and the terms and
conditions  upon which the Bonds are, and are to be,  secured.  The Bonds may be
issued in series, for various principal sums, may mature at different times, may
bear  interest  at  different  rates and may  otherwise  vary as provided in the
Indenture.  This  New  Mortgage  Bond  of the  2009  Series  is one of a  series
designated as the "New Mortgage Bonds, 7.50% Series Due 2009" (the "New Mortgage
Bonds of the 2009  Series") of the Company,  unlimited  in  aggregate  principal
amount,  issued  under  and  secured  by  the  Indenture  and  described  in the
supplemental  indenture dated as of June 15, 1999 (the  "Supplemental  Indenture
dated as of June 15, 1999"), between the Company  and  the Trustee, supplemental
to the Indenture.

         The New Mortgage  Bonds of the 2009 Series are subject to redemption on
the terms and subject to the conditions set forth in the Supplemental  Indenture
dated as of June 15, 1999.

         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such declaration may be rescinded under certain circumstances.


                                   ARTICLE II.

                 ISSUE OF NEW MORTGAGE BONDS OF THE 2009 SERIES.

         SECTION  1. The  Company  hereby  exercises  the  right to  obtain  the
authentication  of $250,000,000  principal amount of Bonds pursuant to the terms
of Section 4.02 of the Indenture.  All such Bonds shall be New Mortgage Bonds of
the 2009 Series.

                                       79
<PAGE>

         SECTION  2.  Such  New  Mortgage  Bonds  of  the  2009  Series  may  be
authenticated  and  delivered  prior  to the  filing  for  recordation  of  this
Supplemental Indenture.


                                  ARTICLE III.

                                   REDEMPTION.

         The  Company at its option may,  at any time,  redeem the New  Mortgage
Bonds of the  2009  Series,  in whole or in part (if in part,  by lot or by such
other method as the Trustee shall deem fair or  appropriate)  prior to maturity,
on any date, upon payment of a redemption price equal to the greater of (i) 100%
of the  principal  amount  of the New  Mortgage  Bonds of the 2009  Series to be
redeemed  plus  accrued  and  unpaid  interest  thereon,  if any,  from the last
interest  payment date to the date of redemption,  or (ii) the Make Whole Amount
plus accrued and unpaid interest, if any, from the last interest payment date to
the redemption date.

     "Make Whole Amount" means,  with respect to a New Mortgage Bond of the 2009
Series at any time,  the sum of the present  values of the  Remaining  Scheduled
Payments  (as defined  below)  discounted,  on a  semiannual  basis  (assuming a
360-day  year  consisting  of  twelve  30-day  months),  at a rate  equal to the
Treasury  Rate (as defined  below) plus 20 basis  points.  The Make Whole Amount
shall  be  computed  as of the  third  Business  Day  prior  to  the  applicable
redemption date, and certified, by an Investment Banker (as defined below).

         "Investment Banker" means an independent investment banking institution
of good standing selected by the Company.

         "Remaining Scheduled Payments" means the remaining scheduled payment of
the principal  and interest that would be due if such New Mortgage  Bonds of the
2009  Series  were  not  redeemed.  However,  if the  redemption  date  is not a
scheduled  interest  payment date, the amount of the next  succeeding  scheduled
interest payment on such New Mortgage Bond of the 2009 Series will be reduced by
the amount of interest  accrued on such New Mortgage Bonds of the 2009 Series to
such redemption date.

         "Treasury Rate" means an annual rate equal to the semiannual equivalent
yield to maturity of the Comparable Treasury Issue (as defined below),  assuming
a price for the  Comparable  Treasury  Issue  (expressed  as a percentage of its
principal amount) equal to the Comparable  Treasury Price (as defined below) for
the  redemption  date.  The  semiannual  equivalent  yield to  maturity  will be
computed as of the third Business Day immediately preceding the redemption date.

         "Comparable  Treasury Issue" means the United States Treasury  security
selected by Salomon Smith Barney Inc. or J.P.  Morgan  Securities  Inc. or their
affiliates  as having a maturity  comparable  to the  remaining  term of the New
Mortgage  Bonds of the  2009  Series  that  would  be  utilized,  at the time of
selection and in accordance with customary  financial  practice,  in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of the New Mortgage Bonds of the 2009 Series.

         "Comparable  Treasury  Price"  means  the  average  of three  Reference
Treasury  Dealer  Quotations (as defined below)  obtained by the Trustee for the
redemption date.

         "Reference  Treasury  Dealers" means Salomon Smith Barney Inc. and J.P.
Morgan Securities Inc. (so long as they continue to be primary U.S. Government


                                       80
<PAGE>

securities dealers) and any one other primary U.S. Government  securities dealer
chosen by the  Company.  If either  Salomon  Smith  Barney Inc.  or J.P.  Morgan
Securities Inc. ceases to be a primary U.S.  Government  securities  dealer, the
Company  will  appoint in its place  another  nationally  recognized  investment
banking firm that is a primary U.S. Government securities dealer.

         "Reference  Treasury Dealer Quotation" means the average, as determined
by the Trustee,  of the bid and asked prices for the  Comparable  Treasury Issue
(expressed  in each case as a  percentage  of its  principal  amount)  quoted in
writing to the Trustee by a  Reference  Treasury  Dealer at 3:30 p.m.,  New York
City time, on the third Business Day preceding the redemption date.


                                   ARTICLE IV.

                             AMENDMENT OF INDENTURE.

         Section  7.07(a)(iii)(A)  is hereby  amended by  inserting in the fifth
line thereof the words "and all Retired Bonds"  immediately  following the words
"Bonds then Outstanding."


                                   ARTICLE V.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees to perform the same upon the terms and  conditions  in the  Indenture set
forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture  or the due  execution  hereof  by the  Company  or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article Eleven of the Indenture  shall apply to
         this  Supplemental  Indenture  with the same force and effect as if the
         same were herein set forth in full, with such omissions, variations and
         modifications thereof as may be appropriate to make the same conform to
         this Supplemental Indenture.

                                   ARTICLE VI.

                            MISCELLANEOUS PROVISIONS.

         This  Supplemental  Indenture  may be  simultaneously  executed  in any
number of counterparts,  each of which when so executed shall be deemed to be an
original;  but such counterparts shall together  constitute but one and the same
instrument.

                                       81
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Indenture to
be executed on its behalf by an Authorized  Executive  Officer as defined in the
Indenture,  and its corporate  seal to be hereto  affixed and said seal and this
Indenture to be attested by an  Authorized  Executive  Officer as defined in the
Indenture; and said Harris Trust and Savings Bank, in evidence of its acceptance
of the trust  hereby  created,  has caused this  Indenture to be executed on its
behalf by its President or one of its Vice  Presidents and its corporate seal to
be  hereto  affixed  and said  seal and this  Indenture  to be  attested  by its
Secretary or one of its Assistant Secretaries,  all as of the date first written
above.

                                                 ILLINOIS POWER COMPANY


                                                 By
                                                   -----------------------------
(CORPORATE SEAL)                                       Robert A. Schultz
                                                       Vice President - Finance


ATTEST:


- ------------------------------
Leah Manning Stetzner
Corporate Secretary








                                                  HARRIS TRUST AND SAVINGS BANK,
                                                   Trustee


                                                  By
                                                    ----------------------------
                                                       J. Bartolini
                                                       Vice President


(CORPORATE SEAL)

ATTEST:


- ----------------------------
C. Potter
Assistant Secretary

                                       82
<PAGE>

STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF MACON      )

         BE IT REMEMBERED,  that on this ___ day of _____,  1999, before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A.  Schultz,  Vice  President - Finance and Leah Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.




                                           Notary Public, Macon County, Illinois


My Commission Expires _______________.

(NOTARIAL SEAL)



STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF COOK       )

         BE IT REMEMBERED, that on this ____ day of ______, 1999, before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally came J. Bartolini, Vice President and C. Potter, Assistant Secretary,
of Harris Trust and Savings Bank, a corporation duly organized, incorporated and
existing under the laws of the State of Illinois, who are personally known to me
to be such officers,  and who are personally  known to me to be the same persons
who executed as such officers the within instrument of writing, and such persons
duly acknowledged that they signed,  sealed and delivered the said instrument as
their free and voluntary act as such officers, and as the free and voluntary act
of said Harris  Trust and  Savings  Bank for the uses and  purposes  therein set
forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.



                                            Notary Public, Cook County, Illinois

My Commission Expires _____________.

(NOTARIAL SEAL)

                                       83
<PAGE>

Return To:                                    This Instrument Was Prepared By:

   ILLINOIS POWER COMPANY                     SCHIFF HARDIN & WAITE
   Real Estate Dept. F-14                     6600 Sears Tower
   500 S. 27th Street                         233 South Wacker Drive
   Decatur, IL 62525                          Chicago, IL 60606

                                       84
<PAGE>

                                                                     Exhibit 4.3
                             ILLINOIS POWER COMPANY


                                       TO


                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee






                          SUPPLEMENTAL INDENTURE NO. 1

                            DATED AS OF JULY 15, 1999


                                       TO


                           MORTGAGE AND DEED OF TRUST

                             DATED NOVEMBER 1, 1943



                                       85
<PAGE>

Supplemental  Indenture  No.  1 dated  as of July 15,  1999  (the  "Supplemental
Indenture No. 1"), made by and between  ILLINOIS  POWER  COMPANY,  a corporation
organized and existing under the laws of the State of Illinois (the  "Company"),
party of the first  part,  and HARRIS  TRUST AND  SAVINGS  BANK,  a  corporation
organized and existing under the laws of the State of Illinois (the  "Trustee"),
as  Trustee  under  the  Mortgage  and Deed of Trust  dated  November  1,  1943,
hereinafter mentioned, party of the second part;

         WHEREAS, the Company has heretofore executed and delivered its Mortgage
and Deed of Trust dated November 1, 1943 ("Original Indenture"), to the Trustee,
for the  security of the First  Mortgage  Bonds of the Company  issued and to be
issued thereunder (the "Bonds"); and

         WHEREAS, pursuant to the terms and provisions of the Original Indenture
there were created and authorized by Supplemental Indentures thereto bearing the
following  dates,  respectively,  the First  Mortgage Bonds of the series issued
thereunder and respectively identified opposite such dates:




Date of Supplemental     Identification
    Indenture               of Series                      Called

November 1, 1943     4% Series due 1973          Bonds of the 1973 Series
                     (redeemed)

March 1, 1946        2 7/8% Series due 1976      Bonds of the 1976 Series
                     (paid at maturity)

February 1, 1948     3 1/2% Series due 1978      Bonds of the 1978 Series
                     (paid at maturity)

July 1, 1949         2 7/8% Series due 1979      Bonds of the 1979 Series
                     (paid at maturity)

April 1, 1950        2 3/4% Series due 1980      Bonds of the 1980 Series
                     (paid at maturity)

March 1, 1952        3 1/2% Series due 1982      Bonds of the 1982 Series
                     (paid at maturity)

November 1, 1953     3 1/2% Series due 1983      Bonds of the 1983 Series
                     (paid at maturity)

July 1, 1956         3 3/4% Series due 1986      Bonds of the 1986 Series
                     (paid at maturity)

May 1, 1958          4% Series due 1988          Bonds of the 1988 Series
                     (redeemed)

January 1, 1963      4 1/4% Series due 1993      Bonds of the 1993 Series
                     (paid at maturity)

October 1, 1966      5.85% Series due 1996       Bonds of the 1996 Series
                     (paid at maturity)

                                       86
<PAGE>

Date of Supplemental     Identification
    Indenture               of Series                      Called

January 1, 1968      6 3/8% Series due 1998      Bonds of the First 1998 Series
                     (redeemed)

October 1, 1968      6 3/4% Series due 1988      Bonds of the Second 1998 Series
                     (redeemed)

October 1, 1969      8.35% Series due 1999       Bonds of the First 1999 Series
                     (redeemed)

November 1, 1970     9% Series due 2000          Bonds of the 2000 Series
                     (redeemed)

October 1, 1971      7.60% Series due 2001       Bonds of the 2001 Series
                     (redeemed)

June 1, 1973         7 5/8% Series due 2003      Bonds of the First 2003 Series
                     (redeemed)

May 1, 1974          Pollution Control           Bonds of the Pollution Control
                     Series A                    Series A

September 1, 1974    10 1/2% Series due 2004     Bonds of the First 2004 Series
                     (redeemed)

July 1, 1976         8 3/4% Series due 2006      Bonds of the 2006 Series
                     (redeemed)

May 1, 1977          Pollution Control Series B  Bonds of Pollution Control
                     (redeemed)                  Series B

November 1, 1977     8 1/4% Series due 2007      Bonds of the 2007 Series
                     (redeemed)

August 1, 1978       8 7/8% Series due 2008      Bonds of the 2008 Series
                     (redeemed)

July 1, 1979         9 7/8% Series due 2004      Bonds of the Second 2004 Series
                     (redeemed)

July 31, 1980        11 3/8% Series due 1987     Bonds of the 1987 Series
                     (redeemed)

August 1, 1980       12 5/8% Series due 2010     Bonds of the 2010 Series
                     (redeemed)

July 1, 1982         14 1/2% Series due 1990     Bonds of the 1990 Series
                     (redeemed)

November 1, 1982     12% Series due 2012         Bonds of the 2012 Series
                     (redeemed)

                                       87
<PAGE>

Date of Supplemental  Identification
    Indenture            of Series                            Called

December 15, 1983    Pollution Control Series C  Bonds of the Pollution Control
                     (redeemed)                  Series C

May 15, 1984         Pollution Control Series D  Bonds of the Pollution Control
                     (redeemed)                  Series D

March 1, 1985        Pollution Control Series E  Bonds of the Pollution Control
                     (redeemed)                  Series E

February 1, 1986     10 1/2% Series due 2016     Bonds of the First 2016 Series
                     (redeemed)

July 1, 1986         9 7/8% Series due 2016      Bonds of the Second 2016 Series
                     (redeemed)

September 1, 1986    9 3/8% Series due 2016      Bonds of the Third 2016 Series
                     (redeemed)

February 1, 1987     Pollution Control Series F  Bonds of the Pollution Control
                     (redeemed)                  Series F

February 1, 1987     Pollution Control Series G  Bonds of the Pollution Control
                     (redeemed)                  Series G

February 1, 1987     Pollution Control Series H  Bonds of the Pollution Control
                     (redeemed)                  Series H

July 1, 1987         Pollution Control Series I  Bonds of the Pollution Control
                     (redeemed)                  Series I

July 1, 1988         10% Series due 1998         Bonds of the Third 1998 Series
                     (redeemed)

July 1, 1991         Pollution Control Series J  Bonds of the Pollution Control
                                                 Series J

June 1, 1992         Pollution Control Series K  Bonds of the Pollution Control
                                                 Series K

June 1, 1992         Pollution Control Series L  Bonds of the Pollution Control
                                                 Series L

July 1, 1992         7.95% Series due 2004       Bonds of the Third 2004 Series


July 1, 1992         8 3/4% Series due 2021      Bonds of the 2021 Series
                     (redeemed)

September 1, 1992    6 1/2% Series due 1999      Bonds of the 1999 Series

                                       88
<PAGE>

Date of Supplemental  Identification
    Indenture            of Series                            Called

February 15, 1993    8% Series due 2023          Bonds of the 2023 Series
                     (redeemed)

March 15, 1993       6 1/8% Series due 2000      Bonds of the 2000 Series

March 15, 1993       6 3/4% Series due 2005      Bonds of the 2005 Series

July 15, 1993        7 1/2% Series due 2025      Bonds of the 2025 Series

August 1, 1993       6 1/2% Series due 2003      Bonds of the Second 2003 Series

October 15, 1993     5 5/8% Series due 2000      Bonds of the Second 2000 Series

November 1, 1993     Pollution Control Series M  Bonds of the Pollution Control
                                                 Series M

November 1, 1993     Pollution Control Series N  Bonds of the Pollution Control
                                                 Series N

November 1, 1993     Pollution Control Series O  Bonds of the Pollution Control
                                                 Series O

April 1, 1997        Pollution Control Series P  Bonds of the Pollution Control
                                                 Series P

April 1, 1997        Pollution Control Series Q  Bonds of the Pollution Control
                                                 Series Q

April 1, 1997        Pollution Control Series R  Bonds of the Pollution Control
                                                 Series R

March 1, 1998        Pollution Control Series S  Bonds of the Pollution Control
                                                 Series S

March 1, 1998        Pollution Control Series T  Bonds of the Pollution Control
                                                 Series T

July 15, 1998        6 1/4% Series due 2002      Bonds of the 2002 Series

September 15, 1998   6% Series due 2003          Bonds of the Third 2003 Series

June 15, 1999        7.50% Series due 2009       Bonds of the 2009 Series


and

         WHEREAS,  the  Company  desires  to create a new  series of Bonds to be
issued  under  the  Original  Indenture,  to be known as First  Mortgage  Bonds,
Pollution Control Series U (the "Pollution Control Series U Bonds") and to issue
additional Bonds under the Original Indenture; and

                                       89
<PAGE>

         WHEREAS,  the  Pollution  Control  Series U Bonds  are to be  issued to
Harris Trust and Savings Bank, as trustee (the "New Mortgage Trustee") under the
Company's  General Mortgage  Indenture and Deed of Trust dated as of November 1,
1992  (the  "New  Mortgage")  and are to be owned  and held by the New  Mortgage
Trustee as "Pledged  Bonds" (as defined in the New Mortgage) in accordance  with
the terms of the New Mortgage; and

         WHEREAS,  the  Company,  in the  exercise  of the powers and  authority
conferred  upon  and  reserved  to it  under  the  provisions  of  the  Original
Indenture,  and pursuant to  appropriate  resolutions of the Board of Directors,
has duly resolved and  determined to make,  execute and deliver to the Trustee a
Supplemental  Indenture  No.  1 in the  form  hereof  for  the  purposes  herein
provided; and

         WHEREAS,  all  conditions  and  requirements  necessary  to  make  this
Supplemental  Indenture No. 1 a valid,  binding and legal  instrument  have been
done, performed and fulfilled and the execution and delivery hereof have been in
all respects duly authorized;

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE NO. 1 WITNESSETH:

         THAT  Illinois  Power  Company,  in  consideration  of the purchase and
ownership from time to time of the Bonds and the service by the Trustee, and its
successors,  under the Original  Indenture  and of One Dollar to it duly paid by
the  Trustee at or before the  ensealing  and  delivery of these  presents,  the
receipt whereof is hereby acknowledged,  hereby covenants and agrees to and with
the Trustee and its  successors in the trust under the Original  Indenture,  for
the benefit of the New Trustee and any successor holder of the Bonds as follows:

                                   ARTICLE I.

                DESCRIPTION OF POLLUTION CONTROL SERIES U BONDS.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as First Mortgage  Bonds,  Pollution  Control Series U (the  "Pollution  Control
Series U  Bonds").  The  Pollution  Control  Series U Bonds  shall be  executed,
authenticated  and delivered in accordance  with the provisions of, and shall in
all respects be subject to, all of the terms,  conditions  and  covenants of the
Original Indenture, as supplemented and modified. The Pollution Control Series U
Bonds will be issued only to the New  Mortgage  Trustee as security for a series
of bonds being issued  under the  Company's  New  Mortgage and the  supplemental
indenture no. 1 to the New Mortgage dated as of July 15, 1999 (the "New Mortgage
Pollution  Control Series U Bonds") and in the same principal  amount as the New
Mortgage Pollution Control Series U Bonds.

         The  Pollution  Control  Series U Bonds  shall be dated as  provided in
Section 6 of Article II of the Original  Indenture,  and the commencement of the
first  interest  period shall be the date of  issuance.  All  Pollution  Control
Series U Bonds shall mature on February 1, 2024,  and shall bear interest at the
rate of five and seven-tenths percent (5.70%) per annum,  payable  semi-annually
on February 1 and August 1 of each year until the principal sum is paid in full.
Any  payment by the  Company of  principal  of, or premium or  interest  on, any
Pollution Control Series U Bonds shall be applied by the New Mortgage Trustee to
the  payment  of any  principal,  premium  or  interest,  as the case may be, in
respect of the New Mortgage  Pollution  Control Series U Bonds due in accordance
with the terms of the New Mortgage.

         SECTION  2. The  Pollution  Control  Series U Bonds  and the  Trustee's
Certificate shall be substantially in the following forms respectively:

                                       90
<PAGE>

                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                 FIRST MORTGAGE BOND, POLLUTION CONTROL SERIES U

No. __________    $35,615,000

         ILLINOIS POWER COMPANY, a corporation  organized and existing under the
laws of the State of  Illinois  (the  "Company,"  which term shall  include  any
successor  corporation as defined in the Indenture hereinafter referred to), for
value  received,  hereby  promises to pay to Harris  Trust and  Savings  Bank as
trustee  (the "New  Mortgage  Trustee")  under the  Company's  General  Mortgage
Indenture and Deed of Trust dated as of November 1, 1992 (the "New Mortgage") or
its  registered  assigns,  the  principal sum of Thirty Five Million Six Hundred
Fifteen  Thousand  Dollars  ($35,615,000)  on February  1, 2024,  in any coin or
currency of the United  States of America  which at the time of payment is legal
tender for public and private debts, and to pay interest thereon in like coin or
currency  from the date of  issuance,  payable  semi-annually  on February 1 and
August 1 in each year, at the rate of five and seven-tenths  percent (5.70%) per
annum,  until the  Company's  obligation  with  respect  to the  payment of such
principal  shall be discharged as provided in the Indenture.  Both the principal
of, and the  interest  on, this Bond are payable at the agency of the Company in
the City of Chicago, Illinois.

         This First Mortgage Bond shall not be entitled to any benefit under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The provisions of this First Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.

         IN WITNESS  WHEREOF,  Illinois  Power  Company  has  caused  this First
Mortgage Bond to be signed  (manually or by facsimile  signature) in its name by
its  President  or a Vice  President,  and its  corporate  seal (or a  facsimile
thereof) to be hereto affixed and attested (manually or by facsimile  signature)
by its Secretary or an Assistant Secretary.


Dated: July __, 1999                             ILLINOIS POWER COMPANY


                                                 By:
                                                    ----------------------------
                                                          Vice President
(Corporate Seal)

ATTEST:


- -------------------------------------
Secretary or Assistant Secretary

                                       91
<PAGE>

                         [FORM OF TRUSTEE'S CERTIFICATE]

         This First  Mortgage Bond is one of the Bonds of the series  designated
therein,  described  in the  within-mentioned  Indenture  and  the  Supplemental
Indenture No. 1 dated as of July 15, 1999.


                                                 HARRIS TRUST AND SAVINGS BANK,
                                                   Trustee

                                                 By:
                                                    ----------------------------
                                                        Authorized Officer

                            [FORM OF REVERSE OF BOND)

         This First Mortgage Bond is one of a duly authorized  issue of Bonds of
the Company (the "Bonds") in unlimited aggregate principal amount, of the series
hereinafter specified,  all issued and to be issued under and equally secured by
the  Mortgage  and Deed of Trust  (the  "Indenture"),  dated  November  1, 1943,
executed by the Company to Harris  Trust and Savings  Bank (the  "Trustee"),  as
Trustee, to which Indenture and all indentures  supplemental thereto,  including
the  Supplemental  Indenture dated February 15, 1993, which amended Section 1 of
Article IX of the  Indenture,  reference is hereby made for a description of the
properties  mortgaged and pledged,  the nature and extent of the  security,  the
rights of the  registered  owners of the Bonds  and of the  Trustee  in  respect
thereof,  and the terms and conditions  upon which the Bonds are, and are to be,
secured.  The Bonds may be issued in series,  for various  principal  sums,  may
mature  at  different  times,  may bear  interest  at  different  rates  and may
otherwise vary as in the Indenture provided.  This First Mortgage Bond is one of
a series designated as the First Mortgage Bonds, Pollution Control Series U (the
"Pollution  Control  Series U Bonds") of the  Company,  unlimited  in  aggregate
principal amount, issued under and secured by the Indenture and described in the
supplemental  indenture  no.  1 dated  as of July 15,  1999  (the  "Supplemental
Indenture  No.  1 of July 15,  1999"),  between  the  Company  and the  Trustee,
supplemental to the Indenture.

     To  the  extent   permitted   by,  and  as  provided  in,  the   Indenture,
modifications or alterations of the Indenture,  or of any indenture supplemental
thereto,  and of the rights and obligations of the Company and of the holders of
the  Bonds  and  coupons  may be made  with the  consent  of the  Company  by an
affirmative  vote of the holders of not less than 66 2/3% in amount of the Bonds
entitled to vote then outstanding,  at a meeting of Bondholders  called and held
as provided in the Indenture,  and by an affirmative  vote of the holders of not
less than 66 2/3% in amount of the  Bonds of any  series  entitled  to vote then
outstanding and affected by such modification or alteration, in case one or more
but less than all of the series of Bonds then  outstanding  under the  Indenture
are so affected; provided however, that no such modification or alteration shall
be made which will affect the terms of payment of the  principal of, or interest
or premium, if any, on this First Mortgage Bond.

                                       92
<PAGE>

         The  Pollution  Control  Series U Bonds are  subject to  redemption  in
accordance with the terms of Article III of the Supplemental  Indenture No. 1 of
July 15, 1999.

         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such  declaration  may in certain  events be  rescinded by the holders of a
majority in principal amount of the Bonds outstanding.

         No  recourse  shall be had for the  payment  of the  principal  of,  or
premium or interest on this First  Mortgage  Bond, or for any claim based hereon
or  on  the  Indenture  or  any  indenture  supplemental  thereto,  against  any
incorporator,  or against any stockholder,  director or officer,  as such, past,
present  or  future,  of  the  Company,  or  of  any  predecessor  or  successor
corporation,  either directly or through the Company or any such  predecessor or
successor corporation, whether by virtue of any constitution, statute or rule of
law, or by the  enforcement of any assessment or penalty or otherwise,  all such
liability, whether at common law, in equity, by any constitution,  statute, rule
of law, or  otherwise,  of  incorporators,  stockholders,  directors or officers
being  released by every owner hereof by the  acceptance of this First  Mortgage
Bond and as part of the consideration  for the issue hereof,  and being likewise
released by the terms of the Indenture;  provided,  however, that nothing herein
or in the  Indenture  or any  indenture  supplemental  thereto  contained  shall
prevent  the  enforcement  of the  liability,  if  any,  of any  stockholder  or
subscriber  to capital  stock upon or in respect of shares of capital  stock not
fully paid up.

         Notwithstanding  any  provision  in  the  Indenture,  the  Supplemental
Indenture  No. 1 of July 15, 1999 or this First  Mortgage  Bond to the contrary,
any payment by the Company under the New Mortgage of principal of, or premium or
interest on, bonds which shall have been  authenticated  and delivered under the
New Mortgage  (the "New  Mortgage  Pollution  Control  Series U Bonds") upon the
basis of the issuance and delivery to the New Mortgage  Trustee of the Pollution
Control Series U Bonds shall,  to the extent  thereof,  be deemed to satisfy and
discharge the obligation of the Company to make a payment of principal,  premium
or interest, as the case may be, in respect of this First Mortgage Bond which is
then due.

         This First  Mortgage Bond  constitutes a "Pledged  Bond" (as defined in
the  New  Mortgage)  and  is  subject  to all of  the  rights  and  restrictions
applicable to Pledged Bonds as set forth in the New Mortgage.  Without  limiting
the  generality of the  foregoing,  this First Mortgage Bond shall be subject to
surrender by the New  Mortgage  Trustee in  accordance  with the  provisions  of
Section  7.03 of the New  Mortgage.  To the extent  that any  provisions  in the
Indenture,  the  Supplemental  Indenture of July 15, 1999 or this First Mortgage
Bond are inconsistent with the provisions relating to Pledged Bonds that are set
forth in the New Mortgage, the provisions of the New Mortgage shall apply.

         SECTION 3.  Notwithstanding  any  provision in the Original  Indenture,
this  Supplemental  Indenture No. 1, or the Pollution  Control Series U Bonds to
the contrary, any payment by the Company under the New Mortgage of principal of,
or premium or interest on, New Mortgage  Pollution Control Series U Bonds shall,

                                       93
<PAGE>

to the extent thereof,  be deemed to satisfy and discharge the obligation of the
Company to make any payment of principal,  premium or interest,  as the case may
be, in respect of the Pollution Control Series U Bonds which is then due.

         SECTION 4. The Pollution  Control  Series U Bonds  constitute  "Pledged
Bonds" (as defined in the New Mortgage) and are subject to all of the rights and
restrictions  applicable  to  Pledged  Bonds as set  forth in the New  Mortgage.
Without limiting the generality of the foregoing, the Pollution Control Series U
Bonds shall be subject to surrender by the New  Mortgage  Trustee in  accordance
with the provisions of Section 7.03 of the New Mortgage.  To the extent that any
provisions in the Original Indenture,  this Supplemental  Indenture No. 1 or the
Pollution Control Series U Bonds are inconsistent  with the provisions  relating
to Pledged Bonds that are set forth in the New Mortgage,  the  provisions of the
New Mortgage shall apply.


                                   ARTICLE II.

                   ISSUE OF POLLUTION CONTROL SERIES U BONDS.

         SECTION  1. The  Company  hereby  exercises  the  right to  obtain  the
authentication  of $35,615,000  principal amount of additional Bonds pursuant to
the terms of Section 6 of Article III of the Original  Indenture in substitution
for refundable Bonds.
All such additional Bonds shall be Pollution Control Series U Bonds.

         SECTION 2. Such Pollution  Control Series U Bonds may be  authenticated
and delivered prior to the filing for recordation of this Supplemental Indenture
No. 1.

         SECTION 3.  Notwithstanding  any provision in the Original Indenture to
the contrary, execution of the Pollution Control Series U Bonds on behalf of the
Company,  and the attesting of the corporate seal of the Company  affixed to the
Pollution Control Series U Bonds by the officers of the Company authorized to do
such acts by Section 12 of Article II of the Original  Indenture  may be validly
done  either  by the  manual  or the  facsimile  signatures  of such  authorized
officers of the Company.


                                  ARTICLE III.

                                   REDEMPTION.

         The Pollution  Control Series U Bonds shall,  subject to the provisions
of the Original  Indenture,  be redeemable on the same terms,  on the same dates
and in the same  manner as the New  Mortgage  Pollution  Control  Series U Bonds
shall be redeemed  under the terms of  supplemental  indenture  no. 1 to the New
Mortgage dated as of July 15, 1999.

                                       94
<PAGE>

                                   ARTICLE IV.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees  to  perform  the same  upon the terms  and  conditions  in the  Original
Indenture set forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture No. 1 or the due execution hereof by the Company or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article XIII of the  Original  Indenture  shall
         apply to this  Supplemental  Indenture  No. 1 with the same  force  and
         effect  as if the  same  were  herein  set  forth in  full,  with  such
         omissions,  variations and modifications  thereof as may be appropriate
         to make the same conform to this Supplemental Indenture No. 1.


                                   ARTICLE V.

                            MISCELLANEOUS PROVISIONS.

     This  Supplemental  Indenture No. 1 may be  simultaneously  executed in any
number of counterparts,  each of which when so executed shall be deemed to be an
original;  but such counterparts shall together  constitute but one and the same
instrument.

                                       95
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Supplemental
Indenture No. 1 to be executed on its behalf by its Chairman and President,  one
of its Executive Vice  Presidents,  one of its Senior Vice  Presidents or one of
its Vice  Presidents  and its corporate  seal to be hereto affixed and said seal
and this Supplemental  Indenture No. 1 to be attested by its Secretary or one of
its Assistant  Secretaries;  and said Harris Trust and Savings Bank, in evidence
of its  acceptance  of the trust hereby  created,  has caused this  Supplemental
Indenture No. 1 to be executed on its behalf by its President or one of its Vice
Presidents  and its corporate  seal to be hereto  affixed and said seal and this
Supplemental  Indenture  No. 1 to be  attested  by its  Secretary  or one of its
Assistant Secretaries, all as of the date first above written.

                                                 ILLINOIS POWER COMPANY


                                          By
                                            -----------------------------
                                               Robert A. Schultz
                                               Vice President-Finance

(CORPORATE SEAL)

ATTEST:


- ------------------------
Leah Manning Stetzner
Corporate Secretary

                                          HARRIS TRUST AND SAVINGS BANK, Trustee


                                          By
                                            ------------------------------------
                                               J. Bartolini
                                               Vice President

(CORPORATE SEAL)

ATTEST:


- ------------------------
C. Potter
Assistant Secretary

                                       96
<PAGE>

STATE OF ILLINOIS )
                  ) SS.:
COUNTY OF MACON   )

         BE IT REMEMBERED,  that on this ____ day of July, 1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A.  Schultz,  Vice  President-Finance  and Leah  Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered  the said  instrument as their free and voluntary act as such officers
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          Notary Public, Macon County, Illinois
My Commission Expires on _____________.

(NOTARIAL SEAL)


STATE OF ILLINOIS )
                  ) SS.:
COUNTY OF COOK    )

         BE IT REMEMBERED,  that on this ____ day of July, 1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally came J. Bartolini, Vice President and C. Potter, Assistant Secretary,
of Harris Trust and Savings Bank, a corporation duly organized, incorporated and
existing under the laws of the State of Illinois, who are personally known to me
to be the same persons who executed as such  officers the within  instrument  of
writing,  and such  persons  duly  acknowledged  that they  signed,  sealed  and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and  voluntary act of said Harris Trust and Savings Bank for the
uses and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          Notary Public, Cook County, Illinois
My Commission Expires on ____________.
(NOTARIAL SEAL)

                                       97
<PAGE>

         Return To:                             This Instrument Was Prepared By:

         ILLINOIS POWER COMPANY                 SCHIFF HARDIN & WAITE
         Real Estate Dept. F-14                 6600 Sears Tower
         500 S. 27th Street                     233 South Wacker Drive
         Decatur, IL 62525                      Chicago, IL  60606

                                       98
<PAGE>

                                                                     Exhibit 4.4
                             ILLINOIS POWER COMPANY

                                       TO

                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee

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


                          SUPPLEMENTAL INDENTURE NO. 1

                            DATED AS OF JULY 15, 1999

                                       TO

                  GENERAL MORTGAGE INDENTURE AND DEED OF TRUST

                          DATED AS OF NOVEMBER 1, 1992

                                       99
<PAGE>

Supplemental  Indenture  No.  1 dated  as of July 15,  1999  (the  "Supplemental
Indenture No. 1"), made by and between  ILLINOIS  POWER  COMPANY,  a corporation
organized and existing under the laws of the State of Illinois (the  "Company"),
party of the first  part,  and HARRIS  TRUST AND  SAVINGS  BANK,  a  corporation
organized and existing under the laws of the State of Illinois (the  "Trustee"),
as Trustee  under the General  Mortgage  indenture and Deed of Trust dated as of
November 1, 1992, hereinafter mentioned, party of the second part;

         WHEREAS,  the Company has heretofore executed and delivered its General
Mortgage  Indenture  and  Deed of  Trust  dated  as of  November  1,  1992  (the
"Indenture"),  to the  Trustee,  for the  security  of the Bonds of the  Company
issued and to be issued thereunder (the "Bonds"); and

         WHEREAS,  pursuant to the terms and  provisions of the Indenture  there
were created and  authorized  by  Supplemental  Indentures  thereto  bearing the
following  dates,  respectively,  the New  Mortgage  Bonds of the series  issued
thereunder and respectively identified opposite such dates:

Date of Supplemental   Identification
    Indenture             of Series                                  Called
- ------------------     --------------                                 ------
February 15, 1993    8% Series due 2023          Bonds of the 2023 Series
March 15, 1993       6 1/8% Series due 2000      Bonds of the 2000 Series
March 15, 1993       6 3/4% Series due 2005      Bonds of the 2005 Series
July 15, 1993        7 1/2% Series due 2025      Bonds of the 2025 Series
August 1, 1993       6 1/2% Series due 2003      Bonds of the First 2003 Series
October 15, 1993     5 5/8% Series due 2000      Bonds of the Second 2000 Series
November 1, 1993     Pollution Control Series M  Bonds of the Pollution Control
                                                 Series M
November 1, 1993     Pollution Control Series N  Bonds of the Pollution Control
                                                 Series N
November 1, 1993     Pollution Control Series O  Bonds of the Pollution Control
                                                 Series O
April 1, 1997        Pollution Control Series P  Bonds of the Pollution Control
                                                 Series P
April 1, 1997        Pollution Control Series Q  Bonds of the Pollution Control
                                                 Series Q
April 1, 1997        Pollution Control Series R  Bonds of the Pollution Control
                                                 Series R
March 1, 1998        Pollution Control Series S  Bonds of the Pollution Control
                                                 Series S
March 1, 1998        Pollution Control Series T  Bonds of the Pollution Control
                                                 Series T
July 15, 1998        6 1/4% Series due 2002      Bonds of the 2002 Series
September 15, 1998   6% Series due 2003          Bonds of the Second 2003 Series
June 15, 1999        7.50% Series due 2009       Bonds of the 2009 Series

         WHEREAS,  the  Company  desires  to create a new  series of Bonds to be
issued under the Indenture, to be known as New Mortgage Bonds, Pollution Control
Series U (the "Pollution Control Series U Bonds"); and

         WHEREAS,  the Company will deliver the Pollution Control Series U Bonds
to, and register  them in the name of, Harris Trust and Savings Bank, as trustee
under  the  Indenture  of Trust  dated as of June 1,  1992  (the  "Revenue  Bond
Indenture"),   between  the  Illinois   Development   Finance   Authority   (the
"Authority") and Harris Trust and Savings Bank, as Trustee,  in substitution for
the Company's First Mortgage Bonds,  Pollution  Control Series K, as provided in
Section  4.2 of the Loan  Agreement  dated as of June 1, 1992 by and between the
Authority and the Company;

         WHEREAS,  the  Company,  in the  exercise  of the powers and  authority
conferred  upon and reserved to it under the  provisions of the  Indenture,  and
pursuant to appropriate resolutions of the Board of Directors, has duly resolved
and  determined  to make,  execute  and  deliver to the  Trustee a  Supplemental
Indenture in the form hereof for the purposes herein provided; and

                                      100
<PAGE>

         WHEREAS,  all  conditions  and  requirements  necessary  to  make  this
Supplemental  Indenture No. 1 a valid,  binding and legal  instrument  have been
done, performed and fulfilled and the execution and delivery hereof have been in
all respects duly authorized;

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE NO. 1 WITNESSETH:

         THAT  Illinois  Power  Company,  in  consideration  of the purchase and
ownership from time to time of the Bonds and the service by the Trustee, and its
successors, under the Indenture and of One Dollar to it duly paid by the Trustee
at or before the ensealing and delivery of these  presents,  the receipt whereof
is hereby acknowledged,  hereby covenants and agrees to and with the Trustee and
its  successors in the trust under the  Indenture,  for the benefit of those who
shall hold the Bonds as follows:


                                   ARTICLE I.

                DESCRIPTION OF POLLUTION CONTROL SERIES U BONDS.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as "New Mortgage  Bonds,  Pollution  Control  Series U." The  Pollution  Control
Series U Bonds shall be executed, authenticated and delivered in accordance with
the  provisions  of, and shall in all  respects be subject to, all of the terms,
conditions and covenants of the Indenture, as supplemented and modified.

         The  Pollution  Control  Series U Bonds  shall be dated as  provided in
Section 3.03 of Article  Three of the  Indenture,  and the  commencement  of the
first  interest  period shall be the date of  issuance.  All  Pollution  Control
Series U Bonds shall mature on February 1, 2024,  and shall bear interest at the
rate of five and seven-tenths per cent (5.70%) per annum, payable  semi-annually
on February 1 and August 1 in each year.  The Pollution  Control  Series U Bonds
shall be payable as to  principal  and  interest  in any coin or currency of the
United States of America which at the time of payment is legal tender for public
and private debts,  and shall be payable (as well the interest and the principal
thereof)  at the agency of the  Company in the City of  Chicago,  Illinois.  The
person in whose name the Pollution  Control Series U Bonds are registered at the
close of business on any record date (as  hereinafter  defined)  with respect to
any interest  payment date shall be entitled to receive the interest  payable on
such interest  payment date  notwithstanding  the cancellation of such Pollution
Control  Series U Bonds upon any transfer or exchange  subsequent  to the record
date and prior to such interest payment date; provided,  however, that if and to
the extent the Company  shall default in the payment of the interest due on such
interest  payment date,  such  defaulted  interest  shall be paid as provided in
Section 3.07 of the Indenture.

         The term  "record  date" as used in this  Section  with  respect to any
interest  payment date shall mean the January 15 or July 15, as the case may be,
next preceding the semi-annual  interest payment date, or, if such January 15 or
July 15, shall be a legal holiday or a day on which banking  institutions in the
City of  Chicago,  Illinois,  are  authorized  by law to  close,  then  the next
preceding  day  which  shall  not be a  legal  holiday  or a day on  which  such
institutions are so authorized to close.

         SECTION 2. The Pollution Control Series U Bonds shall be issued only as
registered Bonds without coupons of the denomination of $5,000,  or any integral
multiple of $5,000, appropriately numbered. Pollution Control Series U Bonds may
be exchanged,  upon surrender thereof,  at the agency of the Company in the City
of Chicago,  Illinois, for one or more Pollution Control Series U Bonds of other
authorized  denominations,  for the same aggregate principal amount,  subject to
the terms and conditions set forth in the Indenture.

                                      101
<PAGE>

         Pollution  Control  Series  U Bonds  may be  exchanged  or  transferred
without  expense to the registered  owner thereof except that any taxes or other
governmental  charges  required  to be paid with  respect  to such  transfer  or
exchange  shall be paid by the  registered  owner  requesting  such  transfer or
exchange as a condition precedent to the exercise of such privilege.

         SECTION  3. The  Pollution  Control  Series U Bonds  and the  Trustee's
Certificate of  Authentication  shall be  substantially  in the following  forms
respectively:


                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                  NEW MORTGAGE BOND, POLLUTION CONTROL SERIES U

No.                                 $35,615,000

     ILLINOIS POWER COMPANY, a corporation organized and existing under the laws
of the State of Illinois (the "Company,"  which term shall include any successor
corporation  as defined in the  Indenture  hereinafter  referred  to), for value
received,  hereby  promises  to pay to . . . . . . or  registered  assigns,  the
principal  sum of  Thirty-Five  Million Six  Hundred  Fifteen  Thousand  Dollars
($35,615,000)  on February 1, 2024, in any coin or currency of the United States
of America  which at the time of payment is legal  tender for public and private
debts,  and to pay  interest  thereon in like coin or currency  from the date of
issuance,  payable semi-annually on February 1 and August 1 in each year, at the
rate of five and  seven-tenths  per cent (5.70%) per annum,  until the Company's
obligation  with respect to the payment of such principal shall be discharged as
provided in the Indenture hereinafter mentioned.  The interest so payable on any
February  1 or August 1 will,  subject  to certain  exceptions  provided  in the
Supplemental  Indenture  No. 1 of July 15, 1999,  be paid to the person in whose
name  this New  Mortgage  Bond is  registered  at the close of  business  on the
immediately  preceding January 15 or July 15, as the case may be. Both principal
of, and  interest  on, this New  Mortgage  Bond are payable at the agency of the
Company in the City of Chicago, Illinois.

         This New Mortgage  Bond shall not be entitled to any benefit  under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The  provisions  of this New Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.

                      Illinois Commerce Commission No. 6121

                                      102
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this New Mortgage
Bond  to be  signed  (manually  or by  facsimile  signature)  in its  name by an
Authorized  Executive  Officer,  as defined in the Indenture,  and its corporate
seal (or a facsimile  thereof) to be hereto affixed and attested (manually or by
facsimile  signature)  by an  Authorized  Executive  Officer,  as defined in the
Indenture.

Dated: July __, 1999                              ILLINOIS POWER COMPANY


                                                  By:
                                                    ----------------------------
                                                    Authorized Executive Officer

(Corporate Seal)

ATTEST:


- -------------------------------
   Authorized Executive Officer



                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION]

         This New  Mortgage  Bond is one of the Bonds of the  series  designated
therein  referred to in the  within-mentioned  Indenture dated as of November 1,
1992 and the Supplemental Indenture No. 1 of July 15, 1999.


                                                  HARRIS TRUST AND SAVINGS BANK,
                                                     Trustee


                                                  By:
                                                     ---------------------------
                                                     Authorized Signatory


                            [FORM OF REVERSE OF BOND]

         This New Mortgage  Bond is one of a duly  authorized  issue of Bonds of
the Company (the "Bonds") in unlimited aggregate principal amount, of the series
hereinafter specified,  all issued and to be issued under and equally secured by
a General Mortgage  Indenture and Deed of Trust (the  "Indenture"),  dated as of
November 1, 1992,  executed by the Company to Harris Trust and Savings Bank (the
"Trustee"),  as Trustee,  to which  Indenture  and all  indentures  supplemental
thereto  reference is hereby made for a description of the properties  mortgaged
and pledged,  the nature and extent of the  security,  the rights of  registered
owners of the Bonds and of the  Trustee  in respect  thereof,  and the terms and
conditions  upon which the Bonds are, and are to be,  secured.  The Bonds may be
issued in series, for various principal sums, may mature at different times, may
bear  interest  at  different  rates and may  otherwise  vary as provided in the
Indenture.  This New  Mortgage  Bond is one of a series  designated  as the "New
Mortgage Bonds,  Pollution  Control Series U" (the  "Pollution  Control Series U
Bonds") of the Company,  unlimited in aggregate  principal amount,  issued under
and secured by the Indenture and described in supplemental indenture no. 1 dated
as of July 15,  1999  (the  "Supplemental  Indenture  No. 1 of July 15,  1999"),
between the Company and the Trustee, supplemental to the Indenture.

                                      103
<PAGE>

         The Pollution  Control  Series U Bonds are subject to redemption at any
time or from time to time on or after February 1, 2004 and prior to maturity, at
the option of the Company,  either as a whole or in part by lot, upon payment of
the following percentages of the principal amounts thereof;

         If redeemed during the twelve month period beginning with the first day
of February in the year:

         (The years and the  percentages  of  principal  amount set forth in the
         table in Section 1 of Article III in the  Supplemental  Indenture No. 1
         of July 15, 1999 are to be inserted here.)

together,  in each case,  with accrued  interest to the  redemption  date,  upon
notice given by mail,  postage  prepaid (such mailing to be not less than thirty
days before the redemption date) to the registered owners of such Bonds at their
addresses as the same shall appear,  if at all, on the transfer  register of the
Company,  all  subject  to the  conditions  and as more  fully  set forth in the
Indenture and Supplemental Indenture No. 1 of July 15, 1999.

         The Pollution  Control Series U Bonds are also subject to redemption in
accordance with the terms of Sections 2 and 3 of Article III in the Supplemental
Indenture No. 1 of July 15, 1999.

         If this  New  Mortgage  Bond  or any  portion  thereof  is  called  for
redemption  and payment duly  provided,  this New Mortgage  Bond or such portion
shall be deemed to be redeemed  and cease to bear  interest on or after the date
fixed for such redemption.

         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such declaration may be rescinded under certain circumstances.

         No  recourse  shall be had for the  payment  of the  principal  of,  or
premium or interest on this New Mortgage  Bond, or for any claim based hereon or
on  the  Indenture  or  any   indenture   supplemental   thereto,   against  any
incorporator,  or against any stockholder,  director or officer,  as such, past,
present  or  future,  of  the  Company,  or  of  any  predecessor  or  successor
corporation,  either directly or through the Company or any such  predecessor or
successor  corporation,  either  directly  or  through  the  Company or any such
predecessor  or successor  corporation,  whether by virtue of any  constitution,
statute or rule of law, or by the  enforcement  of any  assessment or penalty or
otherwise,  all such  liability,  whether  at  common  law,  in  equity,  by any
constitution,   statute,   rule  of  law,  or   otherwise,   of   incorporators,
stockholders,  directors or officers being released by every owner hereof by the
acceptance  of this New Mortgage Bond and as part of the  consideration  for the
issue  hereof,  and  being  likewise  released  by the  terms of the  Indenture;
provided,  however,  that nothing  herein or in the  Indenture or any  indenture
supplemental  thereto  contained shall prevent the enforcement of the liability,
if any, of any  stockholder or subscriber to capital stock upon or in respect of
shares of capital stock not fully paid up.

                                      104
<PAGE>

                                   ARTICLE II.

                   ISSUE OF POLLUTION CONTROL SERIES U BONDS.

     SECTION  1.  The  Company   hereby   exercises  the  right  to  obtain  the
authentication  of $35,615,000  principal amount of additional Bonds pursuant to
the terms of Section 4.02 of the Indenture.  All such additional  Bonds shall be
Pollution Control Series U Bonds.

     SECTION 2. Such Pollution  Control Series U Bonds may be authenticated  and
delivered prior to the filing for recordation of this Supplemental Indenture No.
1.

                                  ARTICLE III.

                                   REDEMPTION.

     SECTION  1. The  Pollution  Control  Series U Bonds  shall,  subject to the
provisions of Article Five of the Indenture,  be redeemable  upon the concurrent
redemption of bonds issued under the Revenue Bond  Indenture at any time or from
time to time on or after February 1, 2004, and prior to maturity,  at the option
of the Board of Directors  of the Company,  either as a whole or in part by lot,
at the  percentages of the principal  amount thereof  specified in the following
table together, in each case, with accrued interest to the redemption date:

                                                         Redemption
         Redemption Dates (inclusive)                       Price

         February 1, 2004 through January 31, 2005           102%
         February 1, 2005 through January 31, 2006           101%
         February 1, 2006 and thereafter                     100%

         SECTION 2.  Pollution  Control  Series U Bonds shall be  redeemable  in
whole at the option of the Board of Directors  of the Company  prior to maturity
at a  redemption  price  equal to 100% of the  principal  amount  plus  interest
thereon  accrued to the date fixed for  redemption,  whenever the Company  shall
file the  required  resolution  with the  Authority  and the  trustee  under the
Revenue Bond Indenture,  such resolution as required by the terms of the Revenue
Bond  Indenture,  stating  that one or more of the  following  events shall have
occurred:

                  (a) Damage or destruction to the Company's Clinton  Generating
         Station near  Clinton,  Illinois  (the  "Plant"),  or the air and water
         pollution control,  sewage and solid waste disposal  facilities located
         at the Plant,  which  include among other  things,  sanitary  treatment
         facilities,  water pollution  control  facilities,  and certain liquid,
         gaseous and solid radioactive waste treatment  facilities together with
         certain  miscellaneous  facilities which are  functionally  related and
         subordinate  thereto (the "Project") to such extent that in the opinion
         of the Company's Board of Directors  (expressed in a resolution)  filed
         with the Authority  and the trustee  under the Revenue Bond  Indenture,
         (1) the Plant or the Project,  as the case may be, cannot reasonably be
         repaired,  rebuilt  or  restored  within a period of six  months to its
         condition immediately preceding such damage or destruction,  or (2) the
         Company is thereby  prevented from carrying on its normal  operation at
         the Plant for a period of six months; or

                  (b)  Loss  of  title  to or use of a  substantial  part of the
         Company's Plant or the Project as a result of the exercise of the power
         of eminent  domain  which,  in the  opinion of the  Company's  Board of
         Directors (expressed in a resolution ) filed with the Authority and the
         trustee  under the  Revenue  Bond  Indenture,  results  or is likely to
         result in the Company

                                      105
<PAGE>

          being thereby prevented from carrying on its normal operations therein
          for period of six months; or

                  (c) A change in the  Constitution of Illinois or of the United
         States of America or  legislative  or  administrative  action  (whether
         local,  state or Federal) or a final  decree,  judgment or order of any
         court or  administrative  body (whether local,  state or Federal) which
         causes  the  Loan  Agreement  dated  as of June  1,  1992  between  the
         Authority  and  the  Company  (the   "Agreement")  to  become  void  or
         unenforceable  or impossible  of  performance  in  accordance  with the
         intent and purpose of the parties as expressed  therein or unreasonable
         burdens or excessive  liabilities  to be imposed upon the  Authority or
         the Company with  respect to the Plant or the Project or the  operation
         thereof; or

                  (d) Any event occurs  which,  in the opinion of the  Company's
         Board of Directors  (expressed in a resolution)  renders the Project or
         the Plant so uneconomical that it is abandoned.

Any such  redemption  under this  Section 2 shall be on any date  within 90 days
from the time the Company  files such required  resolution  and directs that the
Pollution  Control  Series U Bonds are to be redeemed,  which  direction must be
given,  if at all, within 180 days following the occurrence of one of the events
listed in (a) through (d) of this Section 2.

         SECTION  3. If a  Determination  of  Taxability  as  defined in Section
301(c) of the Revenue Bond Indenture occurs, then the Pollution Control Series U
Bonds shall be  redeemed  in whole or in part by the  Company  prior to maturity
upon the terms and  conditions  set forth in Section  301(c) of the Revenue Bond
Indenture.

         SECTION 4. For the  purposes of Section 3 of this Article III, a demand
form the trustee under the Revenue Bond Indenture shall be executed on behalf of
such trustee by its  President or a Vice  President or a Trust Officer and shall
be deemed  received by the Trustee when delivered at its Corporate  trust office
in Chicago,  Illinois.  The Trustee may be conclusively  rely as to the truth of
the statements contained therein, upon any such demand.

         SECTION 5. Subject to the  provisions of Article Five of the Indenture,
notice of  redemption of Pollution  Control  Series U Bonds shall be sent by the
Company by certified mail,  postage prepaid,  at least thirty (30) days prior to
the date fixed for redemption,  to the registered  owners of such Bonds at their
addresses as the same shall appear,  if at all, on the transfer  register of the
Company.  Any notice  which is mailed in the  manner  herein  provided  shall be
conclusively presumed to have been duly given whether or not the holders receive
such notice,  but failure to give notice by mail,  or any defect in such notice,
to the holder of any such Bonds  designated  for  redemption in whole or in part
shall not affect the validity of the redemption of any other such Bond.


                                   ARTICLE IV.

                              ADDITIONAL COVENANTS.

         The Company hereby covenants and agrees that:

         SECTION  1.  So long  as any  Pollution  Control  Series  U  Bonds  are
outstanding,  in the event all or substantially  all of the electric  properties
shall have been released as an entirety from the lien of the  Indenture pursuant

                                      106
<PAGE>

to Section 8.03 or Section 8.07 of Article Eight of the  Indenture,  the Company
will,  at any time or from time to time within six months after the date of such
release,  retire Bonds outstanding under the Indenture in an aggregate principal
amount equal to the fair value of the electric  properties so released  pursuant
to Section 8.03 of Article Eight of the  Indenture,  as stated in the engineer's
certificate  required by Section  8.03(a)(iii)  of said Article  Eight,  and the
proceeds of the electric properties so released pursuant to Section 8.07 of said
Article Eight. Such retirement of Bonds shall be effected by causing the Trustee
to purchase or redeem  Bonds,  pursuant to Section 8.06 of Article  Eight of the
Original  Indenture,  out of any moneys  deposited with the Trustee  pursuant to
Sections  8.03(a)(iv)  and 8.07 of  Article  Eight of the  Indenture  upon  such
release.

The Bonds to be so retired on or after,  but only on or after  February 1, 2004,
shall  include a principal  amount of  Pollution  Control  Series U Bonds which,
computed to the nearest $5,000,  bears the same ratio to the aggregate principal
amount  of all  Bonds  so  retired  as the  aggregate  principal  amount  of all
Pollution Control Series U Bonds  outstanding  immediately prior to such release
bears to the aggregate principal amount of all Bonds then outstanding.

         SECTION  2.  All  Pollution  Control  Series U Bonds  delivered  to the
Trustee or purchased or redeemed  pursuant to this Article  shall be canceled by
the Trustee, which shall deliver them to the Company. Pollution Control Series U
Bonds so  canceled  shall not be  reissued,  and no  additional  Bonds  shall be
authenticated  and  delivered  in  substitution  therefor  and  no  property  or
obligations  shall be released or cash withdrawn or reduced under the provisions
of the Indenture on the basis thereof.

                                   ARTICLE V.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees to perform the same upon the terms and  conditions  in the  Indenture set
forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture No. 1 or the due execution hereof by the Company or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article Eleven of the Indenture  shall apply to
         this Supplemental  Indenture No. 1 with the same force and effect as if
         the same were herein set forth in full, with such omissions, variations
         and  modifications  thereof  as may be  appropriate  to make  the  same
         conform to this Supplemental Indenture No. 1.

                                   ARTICLE VI.

                            MISCELLANEOUS PROVISIONS.

     This  Supplemental  Indenture No. 1 may be  simultaneously  executed in any
number of counterparts,  each of which when so executed shall be deemed to be an
original,  but such counterparts shall together  constitute but one and the same
instrument.

                                      107
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Supplemental
Indenture No. 1 to be executed on its behalf by an Authorized  Executive Officer
as defined in the  Indenture,  and its corporate  seal to be hereto  affixed and
said seal and this Indenture to be attested by an Authorized  Executive  Officer
as defined in the Indenture; and said Harris Trust and Savings Bank, in evidence
of its acceptance of the trust hereby  created,  has caused this Indenture to be
executed on its behalf by its  President or one of its Vice  Presidents  and its
corporate  seal to be  hereto  affixed  and said seal and this  Indenture  to be
attested by its  Secretary or one of its  Assistant  Secretaries,  all as of the
date first written above.

                                                  ILLINOIS POWER COMPANY



                                          By
                                          --------------------------------------
                                              Robert A. Schultz
                                              Vice President -- Finance


(CORPORATE SEAL)


ATTEST:



- -----------------------------
Leah Manning Stetzner
Corporate Secretary


                                          HARRIS TRUST AND SAVINGS BANK, Trustee



                                          By
                                            ------------------------------------
                                              J. Bartolini
                                              Vice President


(CORPORATE SEAL)


ATTEST:



- ----------------------------
C. Potter
Assistant Secretary

                                      108
<PAGE>

STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF MACON      )

         BE IT  REMEMBERED,  that on this ___ day of July  1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A.  Schultz,  Vice  President--Finance  and Leah Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.



                                           -------------------------------------
                                           Notary Public, Macon County, Illinois

My Commission Expires _______________.

(NOTARIAL SEAL)



STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF COOK       )

         BE IT REMEMBERED,  that on this ____ day of July, 1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally came J. Bartolini, Vice President and C. Potter, Assistant Secretary,
of Harris Trust and Savings Bank, a corporation duly organized, incorporated and
existing under the laws of the State of Illinois, who are personally known to me
to be the same persons who executed as such  officers the within  instrument  of
writing,  and such  persons  duly  acknowledged  that they  signed,  sealed  and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and  voluntary act of said Harris Trust and Savings Bank for the
uses and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                            ------------------------------------
                                            Notary Public, Cook County, Illinois

My Commission Expires: ___________

(NOTARIAL SEAL)

                                      109
<PAGE>

Return To:                                  This Instrument Was Prepared By:

    ILLINOIS POWER COMPANY                      SCHIFF HARDIN & WAITE
    Real Estate Dept. F-14                      6600 Sears Tower
    500 S. 27th Street                          233 South Wacker Drive
    Decatur, IL 62525                           Chicago, IL 60606

                                      110
<PAGE>

                                                                     Exhibit 4.5
                             ILLINOIS POWER COMPANY


                                       TO


                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee






                          SUPPLEMENTAL INDENTURE NO. 2

                            DATED AS OF JULY 15, 1999


                                       TO


                           MORTGAGE AND DEED OF TRUST

                             DATED NOVEMBER 1, 1943



                                      111
<PAGE>

Supplemental  Indenture  No.  2 dated  as of July 15,  1999  (the  "Supplemental
Indenture No. 1"), made by and between  ILLINOIS  POWER  COMPANY,  a corporation
organized and existing under the laws of the State of Illinois (the  "Company"),
party of the first  part,  and HARRIS  TRUST AND  SAVINGS  BANK,  a  corporation
organized and existing under the laws of the State of Illinois (the  "Trustee"),
as  Trustee  under  the  Mortgage  and Deed of Trust  dated  November  1,  1943,
hereinafter mentioned, party of the second part;

         WHEREAS, the Company has heretofore executed and delivered its Mortgage
and Deed of Trust dated November 1, 1943 ("Original Indenture"), to the Trustee,
for the  security of the First  Mortgage  Bonds of the Company  issued and to be
issued thereunder (the "Bonds"); and

         WHEREAS, pursuant to the terms and provisions of the Original Indenture
there were created and authorized by Supplemental Indentures thereto bearing the
following  dates,  respectively,  the First  Mortgage Bonds of the series issued
thereunder and respectively identified opposite such dates:


Date of Supplemental   Identification
    Indenture              of Series                    Called

November 1, 1943      4% Series due 1973          Bonds of the 1973 Series
                      (redeemed)

March 1, 1946         2 7/8% Series due 1976      Bonds of the 1976 Series
                      (paid at maturity)

February 1, 1948      3 1/2% Series due 1978      Bonds of the 1978 Series
                      (paid at maturity)

July 1, 1949          2 7/8% Series due 1979      Bonds of the 1979 Series
                      (paid at maturity)

April 1, 1950         2 3/4% Series due 1980      Bonds of the 1980 Series
                      (paid at maturity)

March 1, 1952         3 1/2% Series due 1982      Bonds of the 1982 Series
                      (paid at maturity)

November 1, 1953      3 1/2% Series due 1983      Bonds of the 1983 Series
                       (paid at maturity)

July 1, 1956          3 3/4% Series due 1986      Bonds of the 1986 Series
                      (paid at maturity)

May 1, 1958           4% Series due 1988          Bonds of the 1988 Series
                      (redeemed)

January 1, 1963       4 1/4% Series due 1993      Bonds of the 1993 Series
                      (paid at maturity)

October 1, 1966       5.85% Series due 1996       Bonds of the 1996 Series
                      (paid at maturity)

                                      112
<PAGE>

Date of Supplemental   Identification
    Indenture              of Series                       Called

January 1, 1968      6 3/8% Series due 1998      Bonds of the First 1998 Series
                     (redeemed)

October 1, 1968      6 3/4% Series due 1998      Bonds of the Second 1998 Series
                     (redeemed)

October 1, 1969      8.35% Series due 1999       Bonds of the First 1999 Series
                     (redeemed)

November 1, 1970     9% Series due 2000          Bonds of the 2000 Series
                     (redeemed)

October 1, 1971      7.60% Series due 2001       Bonds of the 2001 Series
                     (redeemed)

June 1, 1973         7 5/8% Series due 2003      Bonds of the First 2003 Series
                     (redeemed)

May 1, 1974          Pollution Control Series A  Bonds of the Pollution Control
                                                 Series A

September 1, 1974    10 1/2% Series due 2004     Bonds of the First 2004 Series
                      (redeemed)

July 1, 1976         8 3/4% Series due 2006      Bonds of the 2006 Series
                      (redeemed)

May 1, 1977          Pollution Control Series B  Bonds of Pollution Control
                     (redeemed)                  Series B

November 1, 1977     8 1/4% Series due 2007      Bonds of the 2007 Series
                     (redeemed)

August 1, 1978       8 7/8% Series due 2008      Bonds of the 2008 Series
                     (redeemed)

July 1, 1979         9 7/8% Series due 2004      Bonds of the Second 2004 Series
                     (redeemed)

July 31, 1980        11 3/8% Series due 1987     Bonds of the 1987 Series
                     (redeemed)

August 1, 1980       12 5/8% Series due 2010     Bonds of the 2010 Series
                     (redeemed)

July 1, 1982         14 1/2% Series due 1990     Bonds of the 1990 Series
                     (redeemed)

November 1, 1982     12% Series due 2012         Bonds of the 2012 Series
                     (redeemed)

                                      113
<PAGE>

Date of Supplemental   Identification
    Indenture             of Series                        Called

December 15, 1983    Pollution Control Series C  Bonds of the Pollution Control
                     (redeemed)                  Series C

May 15, 1984         Pollution Control Series D  Bonds of the Pollution Control
                     (redeemed)                  Series D

March 1, 1985        Pollution Control Series E  Bonds of the Pollution Control
                     (redeemed)                  Series E

February 1, 1986     10 1/2% Series due 2016     Bonds of the First 2016 Series
                     (redeemed)

July 1, 1986         9 7/8% Series due 2016      Bonds of the Second 2016 Series
                     (redeemed)

September 1, 1986    9 3/8% Series due 2016      Bonds of the Third 2016 Series
                     (redeemed)

February 1, 1987     Pollution Control Series F  Bonds of the Pollution Control
                     (redeemed)                  Series F

February 1, 1987     Pollution Control Series G  Bonds of the Pollution Control
                     (redeemed)                  Series G

February 1, 1987     Pollution Control Series H  Bonds of the Pollution Control
                     (redeemed)                  Series H

July 1, 1987         Pollution Control Series I  Bonds of the Pollution Control
                     (redeemed)                  Series I

July 1, 1988         10% Series due 1998         Bonds of the Third 1998 Series
                     (redeemed)

July 1, 1991         Pollution Control Series J  Bonds of the Pollution Control
                                                 Series J

June 1, 1992         Pollution Control Series K  Bonds of the Pollution Control
                                                 Series K

June 1, 1992         Pollution Control Series L  Bonds of the Pollution Control
                                                 Series L

July 1, 1992         7.95% Series due 2004       Bonds of the Third 2004 Series

July 1, 1992         8 3/4% Series due 2021      Bonds of the 2021 Series
                     (redeemed)

September 1, 1992    6 1/2% Series due 1999      Bonds of the 1999 Series

                                      114
<PAGE>

Date of Supplemental   Identification
    Indenture              of Series                       Called

February 15, 1993    8% Series due 2023          Bonds of the 2023 Series
                     (redeemed)

March 15, 1993       6 1/8% Series due 2000      Bonds of the 2000 Series


March 15, 1993       6 3/4% Series due 2005      Bonds of the 2005 Series

July 15, 1993        7 1/2% Series due 2025      Bonds of the 2025 Series

August 1, 1993       6 1/2% Series due 2003      Bonds of the Second 2003 Series

October 15, 1993     5 5/8% Series due 2000      Bonds of the Second 2000 Series

November 1, 1993     Pollution Control Series M  Bonds of the Pollution Control
                                                 Series M

November 1, 1993     Pollution Control Series N  Bonds of the Pollution Control
                                                 Series N

November 1, 1993     Pollution Control Series O  Bonds of the Pollution Control
                                                 Series O

April 1, 1997        Pollution Control Series P  Bonds of the Pollution Control
                                                 Series P

April 1, 1997        Pollution Control Series Q  Bonds of the Pollution Control
                                                 Series Q

April 1, 1997        Pollution Control Series R  Bonds of the Pollution Control
                                                 Series R

March 1, 1998        Pollution Control Series S  Bonds of the Pollution Control
                                                 Series S

March 1, 1998        Pollution Control Series T  Bonds of the Pollution Control
                                                 Series T

July 15, 1998        6 1/4% Series due 2002      Bonds of the 2002 Series

September 15, 1998   6% Series due 2003          Bonds of the Third 2003 Series

June 15, 1999        7.50% Series due 2009       Bonds of the 2009 Series

July 15, 1999        Pollution Control Series U  Bonds of the Pollution Control
                                                 Series U


and

                                      115
<PAGE>

     WHEREAS,  the Company  desires to create a new series of Bonds to be issued
under the Original  Indenture,  to be known as First Mortgage  Bonds,  Pollution
Control  Series  V (the  "Pollution  Control  Series  V  Bonds")  and  to  issue
additional Bonds under the Original Indenture; and

     WHEREAS,  the Pollution  Control  Series V Bonds are to be issued to Harris
Trust and  Savings  Bank,  as trustee  (the "New  Mortgage  Trustee")  under the
Company's  General Mortgage  Indenture and Deed of Trust dated as of November 1,
1992  (the  "New  Mortgage")  and are to be owned  and held by the New  Mortgage
Trustee as "Pledged  Bonds" (as defined in the New Mortgage) in accordance  with
the terms of the New Mortgage; and

     WHEREAS, the Company, in the exercise of the powers and authority conferred
upon and  reserved to it under the  provisions  of the Original  Indenture,  and
pursuant to appropriate resolutions of the Board of Directors, has duly resolved
and  determined  to make,  execute  and  deliver to the  Trustee a  Supplemental
Indenture No. 2 in the form hereof for the purposes herein provided; and

     WHEREAS,   all   conditions  and   requirements   necessary  to  make  this
Supplemental  Indenture No. 2 a valid,  binding and legal  instrument  have been
done, performed and fulfilled and the execution and delivery hereof have been in
all respects duly authorized;

          NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE NO. 2 WITNESSETH:

     THAT Illinois Power Company, in consideration of the purchase and ownership
from  time  to  time  of the  Bonds  and the  service  by the  Trustee,  and its
successors,  under the Original  Indenture  and of One Dollar to it duly paid by
the  Trustee at or before the  ensealing  and  delivery of these  presents,  the
receipt whereof is hereby acknowledged,  hereby covenants and agrees to and with
the Trustee and its  successors in the trust under the Original  Indenture,  for
the benefit of the New Trustee and any successor holder of the Bonds as follows:

                                   ARTICLE I.

                DESCRIPTION OF POLLUTION CONTROL SERIES V BONDS.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as First Mortgage  Bonds,  Pollution  Control Series V (the  "Pollution  Control
Series V  Bonds").  The  Pollution  Control  Series V Bonds  shall be  executed,
authenticated  and delivered in accordance  with the provisions of, and shall in
all respects be subject to, all of the terms,  conditions  and  covenants of the
Original Indenture, as supplemented and modified. The Pollution Control Series V
Bonds will be issued only to the New  Mortgage  Trustee as security for a series
of bonds being issued  under the  Company's  New  Mortgage and the  supplemental
indenture no. 2 to the New Mortgage dated as of July 15, 1999 (the "New Mortgage
Pollution  Control Series V Bonds") and in the same principal  amount as the New
Mortgage Pollution Control Series V Bonds.

         The  Pollution  Control  Series V Bonds  shall be dated as  provided in
Section 6 of Article II of the Original  Indenture,  and the commencement of the
first  interest  period shall be the date of  issuance.  All  Pollution  Control
Series V Bonds shall mature on December 1, 2024,  and shall bear interest at the
rate of seven and four-tenths per cent (7.40%) per annum, payable  semi-annually
on June 1 and December 1 of each year until the  principal  sum is paid in full.
Any  payment by the  Company of  principal  of, or premium or  interest  on, any
Pollution Control Series V Bonds shall be applied by the New Mortgage Trustee to
the  payment  of any  principal,  premium  or  interest,  as the case may be, in
respect of the New Mortgage  Pollution  Control Series V Bonds due in accordance
with the terms of the New Mortgage.

                                      116
<PAGE>

         SECTION  2. The  Pollution  Control  Series V Bonds  and the  Trustee's
Certificate shall be substantially in the following forms respectively:

                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                 FIRST MORTGAGE BOND, POLLUTION CONTROL SERIES V

No. ____________                                                     $84,150,000

         ILLINOIS POWER COMPANY, a corporation  organized and existing under the
laws of the State of  Illinois  (the  "Company,"  which term shall  include  any
successor  corporation as defined in the Indenture hereinafter referred to), for
value  received,  hereby  promises to pay to Harris  Trust and  Savings  Bank as
trustee  (the "New  Mortgage  Trustee")  under the  Company's  General  Mortgage
Indenture and Deed of Trust dated as of November 1, 1992 (the "New Mortgage") or
its registered  assigns,  the principal sum of  Eighty-Four  Million One Hundred
Fifty  Thousand  Dollars  ($84,150,000)  on  December  1,  2024,  in any coin or
currency of the United  States of America  which at the time of payment is legal
tender for public and private debts, and to pay interest thereon in like coin or
currency from the date of issuance, payable semi-annually on June 1 and December
1 in each year, at the rate of seven and four-tenths per cent (7.40%) per annum,
until the  Company's  obligation  with respect to the payment of such  principal
shall be discharged as provided in the Indenture. Both the principal of, and the
interest  on,  this Bond are payable at the agency of the Company in the City of
Chicago, Illinois.

         This First Mortgage Bond shall not be entitled to any benefit under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The provisions of this First Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.

         IN WITNESS  WHEREOF,  Illinois  Power  Company  has  caused  this First
Mortgage Bond to be signed  (manually or by facsimile  signature) in its name by
its  President  or a Vice  President,  and its  corporate  seal (or a  facsimile
thereof) to be hereto affixed and attested (manually or by facsimile  signature)
by its Secretary or an Assistant Secretary.

Dated: July __, 1999                              ILLINOIS POWER COMPANY


                                                  By:
                                                     ---------------------------
                                                     Vice President
(Corporate Seal)

ATTEST:


- --------------------------------
Secretary or Assistant Secretary

                                      117
<PAGE>

                         [FORM OF TRUSTEE'S CERTIFICATE]

         This First  Mortgage Bond is one of the Bonds of the series  designated
therein,  described  in the  within-mentioned  Indenture  and  the  Supplemental
Indenture No. 2 dated as of July 15, 1999.


                                                  HARRIS TRUST AND SAVINGS BANK,
                                                  Trustee



                                                  By:
                                                     ---------------------------
                                                     Authorized Officer

                            [FORM OF REVERSE OF BOND)

     This First Mortgage Bond is one of a duly authorized  issue of Bonds of the
Company (the "Bonds") in unlimited  aggregate  principal  amount,  of the series
hereinafter specified,  all issued and to be issued under and equally secured by
the  Mortgage  and Deed of Trust  (the  "Indenture"),  dated  November  1, 1943,
executed by the Company to Harris  Trust and Savings  Bank (the  "Trustee"),  as
Trustee, to which Indenture and all indentures  supplemental thereto,  including
the  Supplemental  Indenture dated February 15, 1993, which amended Section 1 of
Article IX of the  Indenture,  reference is hereby made for a description of the
properties  mortgaged and pledged,  the nature and extent of the  security,  the
rights of the  registered  owners of the Bonds  and of the  Trustee  in  respect
thereof,  and the terms and conditions  upon which the Bonds are, and are to be,
secured.  The Bonds may be issued in series,  for various  principal  sums,  may
mature  at  different  times,  may bear  interest  at  different  rates  and may
otherwise vary as in the Indenture provided.  This First Mortgage Bond is one of
a series designated as the First Mortgage Bonds, Pollution Control Series V (the
"Pollution  Control  Series V Bonds") of the  Company,  unlimited  in  aggregate
principal amount, issued under and secured by the Indenture and described in the
supplemental  indenture  no.  2 dated  as of July 15,  1999  (the  "Supplemental
Indenture  No.  2 of July 15,  1999"),  between  the  Company  and the  Trustee,
supplemental to the Indenture.

     To  the  extent   permitted   by,  and  as  provided  in,  the   Indenture,
modifications or alterations of the Indenture,  or of any indenture supplemental
thereto,  and of the rights and obligations of the Company and of the holders of
the  Bonds  and  coupons  may be made  with the  consent  of the  Company  by an
affirmative  vote of the holders of not less than 66 2/3% in amount of the Bonds
entitled to vote then outstanding,  at a meeting of Bondholders  called and held
as provided in the Indenture,  and by an affirmative  vote of the holders of not
less than 66 2/3% in amount of the  Bonds of any  series  entitled  to vote then
outstanding and affected by such modification or alteration, in case one or more
but less than all of the series of Bonds then  outstanding  under the  Indenture
are so affected; provided however, that no such modification or alteration shall
be made which will affect the terms of payment of the  principal of, or interest
or premium, if any, on this First Mortgage Bond.

     The  Pollution  Control  Series  V  Bonds  are  subject  to  redemption  in
accordance with the terms of Article III of the Supplemental  Indenture No. 2 of
July 15, 1999.

                                      118
<PAGE>

         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such  declaration  may in certain  events be  rescinded by the holders of a
majority in principal amount of the Bonds outstanding.

         No  recourse  shall be had for the  payment  of the  principal  of,  or
premium or interest on this First  Mortgage  Bond, or for any claim based hereon
or  on  the  Indenture  or  any  indenture  supplemental  thereto,  against  any
incorporator,  or against any stockholder,  director or officer,  as such, past,
present  or  future,  of  the  Company,  or  of  any  predecessor  or  successor
corporation,  either directly or through the Company or any such  predecessor or
successor corporation, whether by virtue of any constitution, statute or rule of
law, or by the  enforcement of any assessment or penalty or otherwise,  all such
liability, whether at common law, in equity, by any constitution,  statute, rule
of law, or  otherwise,  of  incorporators,  stockholders,  directors or officers
being  released by every owner hereof by the  acceptance of this First  Mortgage
Bond and as part of the consideration  for the issue hereof,  and being likewise
released by the terms of the Indenture;  provided,  however, that nothing herein
or in the  Indenture  or any  indenture  supplemental  thereto  contained  shall
prevent  the  enforcement  of the  liability,  if  any,  of any  stockholder  or
subscriber  to capital  stock upon or in respect of shares of capital  stock not
fully paid up.

         Notwithstanding  any  provision  in  the  Indenture,  the  Supplemental
Indenture  No. 2 of July 15, 1999 or this First  Mortgage  Bond to the contrary,
any payment by the Company under the New Mortgage of principal of, or premium or
interest on, bonds which shall have been  authenticated  and delivered under the
New Mortgage  (the "New  Mortgage  Pollution  Control  Series V Bonds") upon the
basis of the issuance and delivery to the New Mortgage  Trustee of the Pollution
Control Series V Bonds shall,  to the extent  thereof,  be deemed to satisfy and
discharge the obligation of the Company to make a payment of principal,  premium
or interest, as the case may be, in respect of this First Mortgage Bond which is
then due.

         This First  Mortgage Bond  constitutes a "Pledged  Bond" (as defined in
the  New  Mortgage)  and  is  subject  to all of  the  rights  and  restrictions
applicable to Pledged Bonds as set forth in the New Mortgage.  Without  limiting
the  generality of the  foregoing,  this First Mortgage Bond shall be subject to
surrender by the New  Mortgage  Trustee in  accordance  with the  provisions  of
Section  7.03 of the New  Mortgage.  To the extent  that any  provisions  in the
Indenture,  the  Supplemental  Indenture of July 15, 1999 or this First Mortgage
Bond are inconsistent with the provisions relating to Pledged Bonds that are set
forth in the New Mortgage, the provisions of the New Mortgage shall apply.

         SECTION 3.  Notwithstanding  any  provision in the Original  Indenture,
this  Supplemental  Indenture No. 2, or the Pollution  Control Series V Bonds to
the contrary, any payment by the Company under the New Mortgage of principal of,
or premium or interest on, New Mortgage  Pollution Control Series V Bonds shall,
to the extent thereof,  be deemed to satisfy and discharge the obligation of the
Company to make any payment of principal,  premium or interest,  as the case may
be, in respect of the Pollution Control Series V Bonds which is then due.

                                      119
<PAGE>

         SECTION 4. The Pollution  Control  Series V Bonds  constitute  "Pledged
Bonds" (as defined in the New Mortgage) and are subject to all of the rights and
restrictions  applicable  to  Pledged  Bonds as set  forth in the New  Mortgage.
Without limiting the generality of the foregoing, the Pollution Control Series V
Bonds shall be subject to surrender by the New  Mortgage  Trustee in  accordance
with the provisions of Section 7.03 of the New Mortgage.  To the extent that any
provisions in the Original Indenture,  this Supplemental  Indenture No. 2 or the
Pollution Control Series V Bonds are inconsistent  with the provisions  relating
to Pledged Bonds that are set forth in the New Mortgage,  the  provisions of the
New Mortgage shall apply.


                                   ARTICLE II.

                   ISSUE OF POLLUTION CONTROL SERIES V BONDS.

         SECTION  1. The  Company  hereby  exercises  the  right to  obtain  the
authentication  of $84,150,000  principal amount of additional Bonds pursuant to
the terms of Section 6 of Article III of the Original  Indenture in substitution
for refundable Bonds.
All such additional Bonds shall be Pollution Control Series V Bonds.

         SECTION 2. Such Pollution  Control Series V Bonds may be  authenticated
and delivered prior to the filing for recordation of this Supplemental Indenture
No. 2.

         SECTION 3.  Notwithstanding  any provision in the Original Indenture to
the contrary, execution of the Pollution Control Series V Bonds on behalf of the
Company,  and the attesting of the corporate seal of the Company  affixed to the
Pollution Control Series V Bonds by the officers of the Company authorized to do
such acts by Section 12 of Article II of the Original  Indenture  may be validly
done  either  by the  manual  or the  facsimile  signatures  of such  authorized
officers of the Company.


                                  ARTICLE III.

                                   REDEMPTION.

         The Pollution  Control Series V Bonds shall,  subject to the provisions
of the Original  Indenture,  be redeemable on the same terms,  on the same dates
and in the same  manner as the New  Mortgage  Pollution  Control  Series V Bonds
shall be redeemed  under the terms of  supplemental  indenture  no. 2 to the New
Mortgage dated as of July 15, 1999.

                                      120
<PAGE>

                                   ARTICLE IV.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees  to  perform  the same  upon the terms  and  conditions  in the  Original
Indenture set forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture No. 2 or the due execution hereof by the Company or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article XIII of the  Original  Indenture  shall
         apply to this  Supplemental  Indenture  No. 2 with the same  force  and
         effect  as if the  same  were  herein  set  forth in  full,  with  such
         omissions,  variations and modifications  thereof as may be appropriate
         to make the same conform to this Supplemental Indenture No. 2.


                                   ARTICLE V.

                            MISCELLANEOUS PROVISIONS.

     This  Supplemental  Indenture No. 2 may be  simultaneously  executed in any
number of counterparts,  each of which when so executed shall be deemed to be an
original;  but such counterparts shall together  constitute but one and the same
instrument.

                                      121
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Supplemental
Indenture No. 2 to be executed on its behalf by its Chairman and President,  one
of its Executive Vice  Presidents,  one of its Senior Vice  Presidents or one of
its Vice  Presidents  and its corporate  seal to be hereto affixed and said seal
and this Supplemental  Indenture No. 2 to be attested by its Secretary or one of
its Assistant  Secretaries;  and said Harris Trust and Savings Bank, in evidence
of its  acceptance  of the trust hereby  created,  has caused this  Supplemental
Indenture No. 2 to be executed on its behalf by its President or one of its Vice
Presidents  and its corporate  seal to be hereto  affixed and said seal and this
Supplemental  Indenture  No. 2 to be  attested  by its  Secretary  or one of its
Assistant Secretaries, all as of the date first above written.

                                                  ILLINOIS POWER COMPANY


                                          By
                                            ------------------------------------
                                             Robert A. Schultz
                                             Vice President - Finance

(CORPORATE SEAL)

ATTEST:



- ------------------------------
Leah Manning Stetzner
Corporate Secretary

                                          HARRIS TRUST AND SAVINGS BANK, Trustee


                                          By
                                            ------------------------------------
                                             J. Bartolini
                                             Vice President

(CORPORATE SEAL)

ATTEST:


- --------------------------
C. Potter
Assistant Secretary

                                      122
<PAGE>

STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF MACON      )

         BE IT REMEMBERED,  that on this ____ day of July, 1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A.  Schultz,  Vice  President--Finance  and Leah Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered  the said  instrument as their free and voluntary act as such officers
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          -------------------------------------
                                          Notary Public, Macon County, Illinois

My Commission Expires on _________________.

(NOTARIAL SEAL)


STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF COOK       )

         BE IT REMEMBERED,  that on this ____ day of July, 1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally came J. Bartolini, Vice President and C. Potter, Assistant Secretary,
of Harris Trust and Savings Bank, a corporation duly organized, incorporated and
existing under the laws of the State of Illinois, who are personally known to me
to be the same persons who executed as such  officers the within  instrument  of
writing,  and such  persons  duly  acknowledged  that they  signed,  sealed  and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and  voluntary act of said Harris Trust and Savings Bank for the
uses and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          Notary Public, Cook County, Illinois

My Commission Expires on ______________.
(NOTARIAL SEAL)

                                      123
<PAGE>

     Return To:                           This Instrument Was Prepared By:

     ILLINOIS POWER COMPANY               SCHIFF HARDIN & WAITE
     Real Estate Dept. F-14               6600 Sears Tower
     500 S. 27th Street                   233 South Wacker Drive
     Decatur, IL 62525                    Chicago, IL  60606

                                      124
<PAGE>

                                                                     Exhibit 4.6
                             ILLINOIS POWER COMPANY

                                       TO

                         HARRIS TRUST AND SAVINGS BANK,

                                   as Trustee

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


                          SUPPLEMENTAL INDENTURE NO. 2

                            DATED AS OF JULY 15, 1999

                                       TO

                  GENERAL MORTGAGE INDENTURE AND DEED OF TRUST

                          DATED AS OF NOVEMBER 1, 1992

                                      125
<PAGE>

Supplemental  Indenture  No.  2 dated  as of July 15,  1999  (the  "Supplemental
Indenture No. 2"), made by and between  ILLINOIS  POWER  COMPANY,  a corporation
organized and existing under the laws of the State of Illinois (the  "Company"),
party of the first  part,  and HARRIS  TRUST AND  SAVINGS  BANK,  a  corporation
organized and existing under the laws of the State of Illinois (the  "Trustee"),
as Trustee  under the General  Mortgage  indenture and Deed of Trust dated as of
November 1, 1992, hereinafter mentioned, party of the second part;

         WHEREAS,  the Company has heretofore executed and delivered its General
Mortgage  Indenture  and  Deed of  Trust  dated  as of  November  1,  1992  (the
"Indenture"),  to the  Trustee,  for the  security  of the Bonds of the  Company
issued and to be issued thereunder (the "Bonds"); and

         WHEREAS,  pursuant to the terms and  provisions of the Indenture  there
were created and  authorized  by  Supplemental  Indentures  thereto  bearing the
following  dates,  respectively,  the New  Mortgage  Bonds of the series  issued
thereunder and respectively identified opposite such dates:

Date of Supplemental    Identification
     Indenture             of Series                     Called
- --------------------     -------------                   ------
February 15, 1993    8% Series due 2023          Bonds of the 2023 Series
March 15, 1993       6 1/8% Series due 2000      Bonds of the 2000 Series
March 15, 1993       6 3/4% Series due 2005      Bonds of the 2005 Series
July 15, 1993        7 1/2% Series due 2025      Bonds of the 2025 Series
August 1, 1993       6 1/2% Series due 2003      Bonds of the First 2003 Series
October 15, 1993     5 5/8% Series due 2000      Bonds of the Second 2000 Series
November 1, 1993     Pollution Control Series M  Bonds of the Pollution Control
                                                 Series M
November 1, 1993     Pollution Control Series N  Bonds of the Pollution Control
                                                 Series N
November 1, 1993     Pollution Control Series O  Bonds of the Pollution Control
                                                 Series O
April 1, 1997        Pollution Control Series P  Bonds of the Pollution Control
                                                 Series P
April 1, 1997        Pollution Control Series Q  Bonds of the Pollution Control
                                                 Series Q
April 1, 1997        Pollution Control Series R  Bonds of the Pollution Control
                                                 Series R
March 1, 1998        Pollution Control Series S  Bonds of the Pollution Control
                                                 Series S
March 1, 1998        Pollution Control Series T  Bonds of the Pollution Control
                                                 Series T
July 15, 1998        6 1/4% Series due 2002      Bonds of the 2002 Series
September 15, 1998   6% Series due 2003          Bonds of the Second 2003 Series
June 15, 1999        7.50% Series due 2009       Bonds of the 2009 Series
July 15, 1999        Pollution Control Series U  Bonds of the Pollution Control
                                                 Series U

         WHEREAS,  the  Company  desires  to create a new  series of Bonds to be
issued under the Indenture, to be known as New Mortgage Bonds, Pollution Control
Series V (the "Pollution Control Series U Bonds"); and

         WHEREAS,  the Company will deliver the Pollution Control Series V Bonds
to, and register  them in the name of, Harris Trust and Savings Bank, as trustee
under  the  Indenture  of Trust  dated as of June 1,  1992  (the  "Revenue  Bond
Indenture"),   between  the  Illinois   Development   Finance   Authority   (the
"Authority") and Harris Trust and Savings Bank, as Trustee,  in substitution for
the Company's First Mortgage Bonds,  Pollution  Control Series L, as provided in
Section  4.2 of the Loan  Agreement  dated as of June 1, 1992 by and between the
Authority and the Company;

         WHEREAS,  the  Company,  in the  exercise  of the powers and  authority
conferred  upon and reserved to it under the  provisions of the  Indenture,  and
pursuant to appropriate resolutions of the Board of Directors, has duly resolved
and  determined  to make,  execute  and  deliver to the  Trustee a  Supplemental
Indenture in the form hereof for the purposes herein provided; and

                                      126
<PAGE>

         WHEREAS,  all  conditions  and  requirements  necessary  to  make  this
Supplemental  Indenture No. 2 a valid,  binding and legal  instrument  have been
done, performed and fulfilled and the execution and delivery hereof have been in
all respects duly authorized;

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE NO. 2 WITNESSETH:

         THAT  Illinois  Power  Company,  in  consideration  of the purchase and
ownership from time to time of the Bonds and the service by the Trustee, and its
successors, under the Indenture and of One Dollar to it duly paid by the Trustee
at or before the ensealing and delivery of these  presents,  the receipt whereof
is hereby acknowledged,  hereby covenants and agrees to and with the Trustee and
its  successors in the trust under the  Indenture,  for the benefit of those who
shall hold the Bonds as follows:


                                   ARTICLE I.

                DESCRIPTION OF POLLUTION CONTROL SERIES V BONDS.

         SECTION 1. The Company hereby creates a new series of Bonds to be known
as "New Mortgage  Bonds,  Pollution  Control  Series V." The  Pollution  Control
Series V Bonds shall be executed, authenticated and delivered in accordance with
the  provisions  of, and shall in all  respects be subject to, all of the terms,
conditions and covenants of the Indenture, as supplemented and modified.

         The  Pollution  Control  Series V Bonds  shall be dated as  provided in
Section 3.03 of Article  Three of the  Indenture,  and the  commencement  of the
first  interest  period shall be the date of  issuance.  All  Pollution  Control
Series V Bonds shall mature on December 1, 2024,  and shall bear interest at the
rate of seven and four-tenths per cent (7.40%) per annum, payable  semi-annually
on June 1 and  December 1 in each year.  The  Pollution  Control  Series V Bonds
shall be payable as to  principal  and  interest  in any coin or currency of the
United States of America which at the time of payment is legal tender for public
and private debts,  and shall be payable (as well the interest and the principal
thereof)  at the agency of the  Company in the City of  Chicago,  Illinois.  The
person in whose name the Pollution  Control Series V Bonds are registered at the
close of business on any record date (as  hereinafter  defined)  with respect to
any interest  payment date shall be entitled to receive the interest  payable on
such interest  payment date  notwithstanding  the cancellation of such Pollution
Control  Series V Bonds upon any transfer or exchange  subsequent  to the record
date and prior to such interest payment date; provided,  however, that if and to
the extent the Company  shall default in the payment of the interest due on such
interest  payment date,  such  defaulted  interest  shall be paid as provided in
Section 3.07 of the Indenture.

         The term  "record  date" as used in this  Section  with  respect to any
interest  payment date shall mean the May 15 or November 15, as the case may be,
next  preceding the  semi-annual  interest  payment date,  or, if such May 15 or
November 15, shall be a legal holiday or a day on which banking  institutions in
the City of Chicago,  Illinois,  are  authorized by law to close,  then the next
preceding  day  which  shall  not be a  legal  holiday  or a day on  which  such
institutions are so authorized to close.

         SECTION 2. The Pollution Control Series V Bonds shall be issued only as
registered Bonds without coupons of the denomination of $5,000,  or any integral
multiple of $5,000, appropriately numbered. Pollution Control Series V Bonds may
be exchanged,  upon surrender thereof,  at the agency of the Company in the City
of Chicago,  Illinois, for one or more Pollution Control Series V Bonds of other
authorized  denominations,  for the same aggregate principal amount,  subject to
the terms and conditions set forth in the Indenture.

                                      127
<PAGE>

         Pollution  Control  Series  V Bonds  may be  exchanged  or  transferred
without  expense to the registered  owner thereof except that any taxes or other
governmental  charges  required  to be paid with  respect  to such  transfer  or
exchange  shall be paid by the  registered  owner  requesting  such  transfer or
exchange as a condition precedent to the exercise of such privilege.

         SECTION  3. The  Pollution  Control  Series V Bonds  and the  Trustee's
Certificate of  Authentication  shall be  substantially  in the following  forms
respectively:


                             [FORM OF FACE OF BOND]

                             ILLINOIS POWER COMPANY
             (Incorporated under the laws of the State of Illinois)

                  NEW MORTGAGE BOND, POLLUTION CONTROL SERIES V

No. ________________                                                 $84,150,000

     ILLINOIS POWER COMPANY, a corporation organized and existing under the laws
of the State of Illinois (the "Company,"  which term shall include any successor
corporation  as defined in the  Indenture  hereinafter  referred  to), for value
received,  hereby  promises  to pay to . . . . . . or  registered  assigns,  the
principal  sum  of  Eighty-Four  Million  One  Hundred  Fifty  Thousand  Dollars
($84,150,000)  on December 1, 2024, in any coin or currency of the United States
of America  which at the time of payment is legal  tender for public and private
debts,  and to pay  interest  thereon in like coin or currency  from the date of
issuance,  payable  semi-annually  on June 1 and December 1 in each year, at the
rate of seven and  four-tenths  per cent (7.40%) per annum,  until the Company's
obligation  with respect to the payment of such principal shall be discharged as
provided in the Indenture hereinafter mentioned.  The interest so payable on any
June 1 or  December  1 will,  subject  to  certain  exceptions  provided  in the
Supplemental  Indenture  No. 2 of July 15, 1999,  be paid to the person in whose
name  this New  Mortgage  Bond is  registered  at the close of  business  on the
immediately  preceding May 15 or November 15, as the case may be. Both principal
of, and  interest  on, this New  Mortgage  Bond are payable at the agency of the
Company in the City of Chicago, Illinois.

         This New Mortgage  Bond shall not be entitled to any benefit  under the
Indenture or any indenture  supplemental  thereto, or become valid or obligatory
for any purpose,  until the form of certificate  endorsed hereon shall have been
signed by or on behalf of Harris Trust and Savings  Bank,  the Trustee under the
Indenture, or a successor trustee thereto under the Indenture (the "Trustee").

         The  provisions  of this New Mortgage Bond are continued on the reverse
hereof and such continued provisions shall for all purposes have the same effect
as though fully set forth at this place.


                      Illinois Commerce Commission No. 6122

                                      128
<PAGE>

     IN WITNESS  WHEREOF,  Illinois  Power  Company has caused this New Mortgage
Bond  to be  signed  (manually  or by  facsimile  signature)  in its  name by an
Authorized  Executive  Officer,  as defined in the Indenture,  and its corporate
seal (or a facsimile  thereof) to be hereto affixed and attested (manually or by
facsimile  signature)  by an  Authorized  Executive  Officer,  as defined in the
Indenture.

Dated: July __, 1999                              ILLINOIS POWER COMPANY


                                                  By:
                                                    ----------------------------
                                                    Authorized Executive Officer

(Corporate Seal)

ATTEST:


- ------------------------------
  Authorized Executive Officer



                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION]

         This New  Mortgage  Bond is one of the Bonds of the  series  designated
therein  referred to in the  within-mentioned  Indenture dated as of November 1,
1992 and the Supplemental Indenture No. 2 of July 15, 1999.


                                                  HARRIS TRUST AND SAVINGS BANK,
                                                     Trustee,


                                                  By:
                                                     ---------------------------
                                                         Authorized Signatory


                            [FORM OF REVERSE OF BOND]

         This New Mortgage  Bond is one of a duly  authorized  issue of Bonds of
the Company (the "Bonds") in unlimited aggregate principal amount, of the series
hereinafter specified,  all issued and to be issued under and equally secured by
a General Mortgage  Indenture and Deed of Trust (the  "Indenture"),  dated as of
November 1, 1992,  executed by the Company to Harris Trust and Savings Bank (the
"Trustee"),  as Trustee,  to which  Indenture  and all  indentures  supplemental
thereto  reference is hereby made for a description of the properties  mortgaged
and pledged,  the nature and extent of the  security,  the rights of  registered
owners of the Bonds and of the  Trustee  in respect  thereof,  and the terms and
conditions  upon which the Bonds are, and are to be,  secured.  The Bonds may be
issued in series, for various principal sums, may mature at different times, may
bear  interest  at  different  rates and may  otherwise  vary as provided in the
Indenture.  This New  Mortgage  Bond is one of a series  designated  as the "New
Mortgage Bonds,  Pollution  Control Series V" (the  "Pollution  Control Series V
Bonds") of the Company,  unlimited in aggregate  principal amount,  issued under
and secured by the Indenture and described in supplemental indenture No. 2 dated
as of July 15,  1999  (the  "Supplemental  Indenture  No. 2 of July 15,  1999"),
between the Company and the Trustee, supplemental to the Indenture.

                                      129
<PAGE>

         The Pollution  Control  Series V Bonds are subject to redemption at any
time or from time to time on or after December 1, 2004 and prior to maturity, at
the option of the Company,  either as a whole or in part by lot, upon payment of
the following percentages of the principal amounts thereof;

         If redeemed during the twelve month period beginning with the first day
of December in the year:

         (The years and the  percentages  of  principal  amount set forth in the
         table in Section 1 of Article III in the  Supplemental  Indenture No. 2
         of July 15, 1999 are to be inserted here.)

together,  in each case,  with accrued  interest to the  redemption  date,  upon
notice given by mail,  postage  prepaid (such mailing to be not less than thirty
days before the redemption date) to the registered owners of such Bonds at their
addresses as the same shall appear,  if at all, on the transfer  register of the
Company,  all  subject  to the  conditions  and as more  fully  set forth in the
Indenture and Supplemental Indenture No. 2 of July 15, 1999.

         The Pollution  Control Series V Bonds are also subject to redemption in
accordance with the terms of Sections 2 and 3 of Article III in the Supplemental
Indenture No. 2 of July 15, 1999.

         If this  New  Mortgage  Bond  or any  portion  thereof  is  called  for
redemption  and payment duly  provided,  this New Mortgage  Bond or such portion
shall be deemed to be redeemed  and cease to bear  interest on or after the date
fixed for such redemption.

         In case an Event of Default, as defined in the Indenture,  shall occur,
the principal of all the Bonds at any such time outstanding  under the Indenture
may be declared or may become due and payable,  upon the  conditions  and in the
manner and with the effect  provided in the  Indenture.  The Indenture  provides
that such declaration may be rescinded under certain circumstances.

         No  recourse  shall be had for the  payment  of the  principal  of,  or
premium or interest on this New Mortgage  Bond, or for any claim based hereon or
on  the  Indenture  or  any   indenture   supplemental   thereto,   against  any
incorporator,  or against any stockholder,  director or officer,  as such, past,
present  or  future,  of  the  Company,  or  of  any  predecessor  or  successor
corporation,  either directly or through the Company or any such  predecessor or
successor  corporation,  either  directly  or  through  the  Company or any such
predecessor  or successor  corporation,  whether by virtue of any  constitution,
statute or rule of law, or by the  enforcement  of any  assessment or penalty or
otherwise,  all such  liability,  whether  at  common  law,  in  equity,  by any
constitution,   statute,   rule  of  law,  or   otherwise,   of   incorporators,
stockholders,  directors or officers being released by every owner hereof by the
acceptance  of this New Mortgage Bond and as part of the  consideration  for the
issue  hereof,  and  being  likewise  released  by the  terms of the  Indenture;
provided,  however,  that nothing  herein or in the  Indenture or any  indenture
supplemental  thereto  contained shall prevent the enforcement of the liability,
if any, of any  stockholder or subscriber to capital stock upon or in respect of
shares of capital stock not fully paid up.

                                      130
<PAGE>

                                   ARTICLE II.

                   ISSUE OF POLLUTION CONTROL SERIES V BONDS.

         SECTION  1. The  Company  hereby  exercises  the  right to  obtain  the
authentication  of $84,150,000  principal amount of additional Bonds pursuant to
the terms of Section 4.02 of the Indenture.  All such additional  Bonds shall be
Pollution Control Series V Bonds.

         SECTION 2.  Such Pollution  Control Series V Bonds may be authenticated
and delivered prior to the filing for recordation of this Supplemental Indenture
No. 2.

                                  ARTICLE III.

                                   REDEMPTION.

         SECTION 1. The Pollution  Control Series V Bonds shall,  subject to the
provisions of Article Five of the Indenture,  be redeemable  upon the concurrent
redemption of bonds issued under the Revenue Bond  Indenture at any time or from
time to time on or after December 1, 2004, and prior to maturity,  at the option
of the Board of Directors  of the Company,  either as a whole or in part by lot,
at the  percentages of the principal  amount thereof  specified in the following
table together, in each case, with accrued interest to the redemption date:

                                                         Redemption
         Redemption Dates (inclusive)                      Price

         December 1, 2004 through November 30, 2005        102%
         December 1, 2005 through November 30, 2006        101%
         December 1, 2006 and thereafter                   100%

         SECTION 2.  Pollution  Control  Series V Bonds shall be  redeemable  in
whole at the option of the Board of Directors  of the Company  prior to maturity
at a  redemption  price  equal to 100% of the  principal  amount  plus  interest
thereon  accrued to the date fixed for  redemption,  whenever the Company  shall
file the  required  resolution  with the  Authority  and the  trustee  under the
Revenue Bond Indenture,  such resolution as required by the terms of the Revenue
Bond  Indenture,  stating  that one or more of the  following  events shall have
occurred:

                  (a) Damage or destruction to the Company's Clinton  Generating
         Station near  Clinton,  Illinois  (the  "Plant"),  or the air and water
         pollution control,  sewage and solid waste disposal  facilities located
         at the Plant,  which  include among other  things,  sanitary  treatment
         facilities,  water pollution  control  facilities,  and certain liquid,
         gaseous and solid radioactive waste treatment  facilities together with
         certain  miscellaneous  facilities which are  functionally  related and
         subordinate  thereto (the "Project") to such extent that in the opinion
         of the Company's Board of Directors  (expressed in a resolution)  filed
         with the Authority  and the trustee  under the Revenue Bond  Indenture,
         (1) the Plant or the Project,  as the case may be, cannot reasonably be
         repaired,  rebuilt  or  restored  within a period of six  months to its
         condition immediately preceding such damage or destruction,  or (2) the
         Company is thereby  prevented from carrying on its normal  operation at
         the Plant for a period of six months; or

                  (b)  Loss  of  title  to or use of a  substantial  part of the
         Company's Plant or the Project as a result of the exercise of the power
         of eminent  domain  which,  in the  opinion of the  Company's  Board of
         Directors (expressed  in a resolution) filed with the Authority and the
         trustee  under the  Revenue  Bond  Indenture,  results  or is likely to
         result in the

                                      131
<PAGE>

         result in the  Company  being  thereby  prevented from  carrying on its
         normal operations therein for period of six months; or

                  (c) A change in the  Constitution of Illinois or of the United
         States of America or  legislative  or  administrative  action  (whether
         local,  state or Federal) or a final  decree,  judgment or order of any
         court or  administrative  body (whether local,  state or Federal) which
         causes  the  Loan  Agreement  dated  as of June  1,  1992  between  the
         Authority  and  the  Company  (the   "Agreement")  to  become  void  or
         unenforceable  or impossible  of  performance  in  accordance  with the
         intent and purpose of the parties as expressed  therein or unreasonable
         burdens or excessive  liabilities  to be imposed upon the  Authority or
         the Company with  respect to the Plant or the Project or the  operation
         thereof; or

                  (d) Any event occurs  which,  in the opinion of the  Company's
         Board of Directors  (expressed in a resolution)  renders the Project or
         the Plant so uneconomical that it is abandoned.

Any such  redemption  under this  Section 2 shall be on any date  within 90 days
from the time the Company  files such required  resolution  and directs that the
Pollution  Control  Series V Bonds are to be redeemed,  which  direction must be
given,  if at all, within 180 days following the occurrence of one of the events
listed in (a) through (d) of this Section 2.

         SECTION  3. If a  Determination  of  Taxability  as  defined in Section
301(c) of the Revenue Bond Indenture occurs, then the Pollution Control Series V
Bonds shall be  redeemed  in whole or in part by the  Company  prior to maturity
upon the terms and  conditions  set forth in Section  301(c) of the Revenue Bond
Indenture.

         SECTION 4. For the  purposes of Section 3 of this Article III, a demand
form the trustee under the Revenue Bond Indenture shall be executed on behalf of
such trustee by its  President or a Vice  President or a Trust Officer and shall
be deemed  received by the Trustee when delivered at its Corporate  trust office
in Chicago,  Illinois.  The Trustee may be conclusively  rely as to the truth of
the statements contained therein, upon any such demand.

         SECTION 5. Subject to the  provisions of Article Five of the Indenture,
notice of  redemption of Pollution  Control  Series V Bonds shall be sent by the
Company by certified mail,  postage prepaid,  at least thirty (30) days prior to
the date fixed for redemption,  to the registered  owners of such Bonds at their
addresses as the same shall appear,  if at all, on the transfer  register of the
Company.  Any notice  which is mailed in the  manner  herein  provided  shall be
conclusively presumed to have been duly given whether or not the holders receive
such notice,  but failure to give notice by mail,  or any defect in such notice,
to the holder of any such Bonds  designated  for  redemption in whole or in part
shall not affect the validity of the redemption of any other such Bond.


                                   ARTICLE IV.

                              ADDITIONAL COVENANTS.

         The Company hereby covenants and agrees that:

         SECTION  1.  So long  as any  Pollution  Control  Series  V  Bonds  are
outstanding,  in the event all or substantially  all of the electric  properties
shall have been released as an entirety from

                                      132
<PAGE>

the lien of the  Indenture  pursuant to Section  8.03 or Section 8.07 of Article
Eight of the  Indenture,  the  Company  will,  at any time or from  time to time
within six months after the date of such release, retire Bonds outstanding under
the  Indenture in an aggregate  principal  amount equal to the fair value of the
electric properties so released pursuant to Section 8.03 of Article Eight of the
Indenture,   as  stated  in  the  engineer's  certificate  required  by  Section
8.03(a)(iii) of said Article Eight, and the proceeds of the electric  properties
so released  pursuant to Section 8.07 of said Article Eight.  Such retirement of
Bonds shall be  effected  by causing  the  Trustee to purchase or redeem  Bonds,
pursuant to Section 8.06 of Article Eight of the Original Indenture,  out of any
moneys deposited with the Trustee  pursuant to Sections  8.03(a)(iv) and 8.07 of
Article Eight of the Indenture upon such release.

The Bonds to be so retired on or after,  but only on or after  December 1, 2004,
shall  include a principal  amount of  Pollution  Control  Series V Bonds which,
computed to the nearest $5,000,  bears the same ratio to the aggregate principal
amount  of all  Bonds  so  retired  as the  aggregate  principal  amount  of all
Pollution Control Series V Bonds  outstanding  immediately prior to such release
bears to the aggregate principal amount of all Bonds then outstanding.

         SECTION  2.  All  Pollution  Control  Series V Bonds  delivered  to the
Trustee or purchased or redeemed  pursuant to this Article  shall be canceled by
the Trustee, which shall deliver them to the Company. Pollution Control Series V
Bonds so  canceled  shall not be  reissued,  and no  additional  Bonds  shall be
authenticated  and  delivered  in  substitution  therefor  and  no  property  or
obligations  shall be released or cash withdrawn or reduced under the provisions
of the Indenture on the basis thereof.


                                   ARTICLE V.

                                  THE TRUSTEE.

         The Trustee hereby accepts the trusts hereby declared and provided, and
agrees to perform the same upon the terms and  conditions  in the  Indenture set
forth and upon the following terms and conditions:

                  The Trustee shall not be responsible in any manner  whatsoever
         for or in respect of the validity or sufficiency  of this  Supplemental
         Indenture No. 2 or the due execution hereof by the Company or for or in
         respect of the recitals  contained  herein,  all of which  recitals are
         made by the  Company  solely.  In  general,  each  and  every  term and
         condition  contained in Article Eleven of the Indenture  shall apply to
         this Supplemental  Indenture No. 2 with the same force and effect as if
         the same were herein set forth in full, with such omissions, variations
         and  modifications  thereof  as may be  appropriate  to make  the  same
         conform to this Supplemental Indenture No. 2.

                                   ARTICLE VI.

                            MISCELLANEOUS PROVISIONS.

     This  Supplemental  Indenture No. 2 may be  simultaneously  executed in any
number of counterparts,  each of which when so executed shall be deemed to be an
original,  but such counterparts shall together  constitute but one and the same
instrument.

                                      133
<PAGE>

         IN WITNESS WHEREOF, Illinois Power Company has caused this Supplemental
Indenture No. 2 to be executed on its behalf by an Authorized  Executive Officer
as defined in the  Indenture,  and its corporate  seal to be hereto  affixed and
said seal and this Indenture to be attested by an Authorized  Executive  Officer
as defined in the Indenture; and said Harris Trust and Savings Bank, in evidence
of its acceptance of the trust hereby  created,  has caused this Indenture to be
executed on its behalf by its  President or one of its Vice  Presidents  and its
corporate  seal to be  hereto  affixed  and said seal and this  Indenture  to be
attested by its Secretary or one of its Assistant Secretaries, all as of the day
first above written.

                                          ILLINOIS POWER COMPANY



                                          By
                                            ------------------------------------
                                              Robert A. Schultz
                                              Vice President--Finance

(CORPORATE SEAL)


ATTEST:



- ------------------------------
Leah Manning Stetzner
Corporate Secretary


                                          HARRIS TRUST AND SAVINGS BANK, Trustee



                                          By
                                            ------------------------------------
                                              J. Bartolini
                                              Vice President

(CORPORATE SEAL)


ATTEST:


- -------------------------------
C. Potter
Assistant Secretary

                                      134
<PAGE>

STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF MACON      )

         BE IT REMEMBERED,  that on this ___ day of July,  1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally  came Robert A. Schultz,  Vice  President--Finance,  and Leah Manning
Stetzner,  Corporate  Secretary,  of Illinois Power Company,  a corporation duly
organized,  incorporated  and existing  under the laws of the State of Illinois,
who are personally known to me to be such officers, and who are personally known
to me to be the same persons who executed as such officers the within instrument
of writing,  and such persons  duly  acknowledged  that they signed,  sealed and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and voluntary  act of said  Illinois  Power Company for the uses
and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.




                                          Notary Public, Macon County, Illinois

My Commission Expires _______________.

(NOTARIAL SEAL)



STATE OF ILLINOIS    )
                     )SS.:
COUNTY OF COOK       )

         BE IT REMEMBERED,  that on this ___ day of July,  1999,  before me, the
undersigned,  a Notary  Public  within and for the  County and State  aforesaid,
personally came J. Bartolini, Vice President and C. Potter, Assistant Secretary,
of Harris Trust and Savings Bank, a corporation duly organized, incorporated and
existing under the laws of the State of Illinois, who are personally known to me
to be the same persons who executed as such  officers the within  instrument  of
writing,  and such  persons  duly  acknowledged  that they  signed,  sealed  and
delivered the said  instrument as their free and voluntary act as such officers,
and as the free and  voluntary act of said Harris Trust and Savings Bank for the
uses and purposes therein set forth.

         IN WITNESS WHEREOF,  I have hereunto  subscribed my name and affixed my
official seal on the day and year last above written.


                                          Notary Public, Cook County, Illinois

My Commission Expires: ___________

(NOTARIAL SEAL)

                                      135
<PAGE>

Return To:                                This Instrument Was Prepared By:

     ILLINOIS POWER COMPANY               SCHIFF HARDIN & WAITE
     Real Estate Dept. F-14               6600 Sears Tower
     500 S. 27th Street                   233 South Wacker Drive
     Decatur, IL 62525                    Chicago, IL 60606

                                      136
<PAGE>

                                                                    Exhibit 10.1

                          CLINTON NUCLEAR POWER STATION


                            ASSET PURCHASE AGREEMENT

                                 BY AND BETWEEN

                       ILLINOIS POWER COMPANY, as SELLER,

                                       AND

                    AMERGEN ENERGY COMPANY, L.L.C., as BUYER

                            Dated as of June 30, 1999


REDACTED AREAS IN THIS DOCUMENT CONTAIN CONFIDENTIAL MATERIAL WITHHELD
FROM PUBLIC DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

                                      137
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

                                TABLE OF CONTENTS

                                                                           Page

ARTICLE I

DEFINITIONS                                                                    1
     1.1      Definitions                                                      1
     1.2      Certain Interpretive Matters                                    20

ARTICLE II

PURCHASE AND SALE                                                             21
     2.1      Transfer of Assets                                              21
     2.2      Excluded Assets                                                 23
     2.3      Assumed Liabilities and Obligations                             25
     2.4      Excluded Liabilities                                            26
     2.5      Control of Litigation                                           30

ARTICLE III

THE CLOSING                                                                   30
     3.1      Closing                                                         30
     3.2      Purchase Price; Payment                                         31
     3.3      Adjustment to Cash Purchase Price                               31
     3.4      Allocation of Purchase Price                                    33
     3.5      Prorations                                                      33
     3.6      Deliveries by Seller                                            34
     3.7      Deliveries by Buyer                                             35

ARTICLE IV

REPRESENTATIONS AND WARRANTIES OF SELLER                                      37
     4.1      Organization; Qualification                                     37
     4.2      Authority                                                       37
     4.3      Consents and Approvals; No Violation                            37
     4.4      Financial Statements; Reports                                   38
     4.5      Undisclosed Liabilities                                         38
     4.6      Absence of Certain Changes or Events                            39
     4.7      Title and Related Matters                                       39

                                      138
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

     4.8      Real Property Agreements                                        39
     4.9      Insurance                                                       39
     4.10     Environmental Matters                                           40
     4.11     Labor Matters                                                   41
     4.12     ERISA; Benefit Plans                                            41
     4.13     Real Property; Plant and Equipment                              42
     4.14     Condemnation; Public Improvements                               43
     4.15     Certain Contracts and Arrangements                              43
     4.16     Legal Proceedings, etc                                          44
     4.17     Permits; Compliance with Law                                    44
     4.18     NRC Licenses                                                    44
     4.19     Regulation as a Utility                                         45
     4.20     Taxes                                                           45
     4.21     Year 2000 Compliance                                            46
     4.22     Qualified Decommissioning Fund                                  46
     4.23     Nonqualified Decommissioning Fund                               48

ARTICLE V

REPRESENTATIONS AND WARRANTIES OF BUYER                                       49
     5.1      Organization                                                    49
     5.2      Authority                                                       50
     5.3      Consents and Approvals; No Violation                            50
     5.4      Availability of Funds                                           51
     5.5      Legal Proceedings                                               51
     5.6      WARN Act                                                        51
     5.7      Regulation as a Utility                                         51
     5.8      Qualified Buyer                                                 51
     5.9      Limited Liability Company Agreement                             51

ARTICLE VI

COVENANTS OF THE PARTIES                                                      52
     6.1      Conduct of Business Relating to the Purchased Assets            52
     6.2      Access to Information                                           55
     6.3      Expenses                                                        58
     6.4      Further Assurances; Cooperation                                 58
     6.5      Public Statements                                               60

                                      139
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

     6.6      Consents and Approvals                                          60
     6.7      Brokerage Fees and Commissions                                  62
     6.8      Tax Matters                                                     62
     6.9      Advice of Changes                                               64
     6.10     Employees                                                       65
     6.11     Risk of Loss                                                    70
     6.12     Decommissioning Funds                                           71
     6.13     Spent Nuclear Fuel Fees                                         77
     6.14     Department of Energy Decontamination and Decommissioning Fees   77
     6.15     Cooperation Relating to Insurance and Price-Anderson Act        78
     6.16     Tax Clearance Certificates                                      78
     6.17     Remediation                                                     78
     6.18     NRC License Transfer Requirements                               79
     6.19     Metering                                                        79
     6.20     Right to Participate in Electric Generating Projects            80
     6.21     xxxxxxxxxxxxxxxxxxxxxxxxx                                       82
     6.22     Personal Property Insurance                                     82

ARTICLE VII

CONDITIONS                                                                    82
     7.1      Conditions to Obligations of Buyer                              82
     7.2      Conditions to Obligations of Seller                             85

ARTICLE VIII

INDEMNIFICATION                                                               87
     8.1      Indemnification                                                 87
     8.2      Defense of Claims                                               89
     8.3      Waiver and Release                                              91

ARTICLE IX

TERMINATION                                                                   91
     9.1      Termination                                                     91
     9.2      Procedure and Effect of No-Default Termination                  93

                                      140
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

ARTICLE X

MISCELLANEOUS PROVISIONS                                                      93
     10.1     Amendment and Modification                                      93
     10.2     Waiver of  Compliance; Consents                                 93
     10.3     Survival of Representations, Warranties, Covenants              93
     10.4     Notices                                                         94
     10.5     Assignment                                                      95
     10.6     Governing Law                                                   96
     10.7     Counterparts                                                    96
     10.8     Interpretation                                                  96
     10.9     Schedules and Exhibits                                          97
     10.10    Entire Agreement                                                97
     10.11    Bulk Sales Laws                                                 97

                                      141
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

         LIST OF EXHIBITS AND SCHEDULES

EXHIBITS

Exhibit A   Form of Assignment and Assumption Agreement
Exhibit B   Form of Bill of Sale
Exhibit C   Easements
Exhibit D   Form of FIRPTA Affidavit
Exhibit E   Form of Interconnection Agreement
Exhibit F   Information Technology Service Terms
Exhibit G   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Exhibit H   Form of Power Purchase Agreement
Exhibit I   Form of Special Warranty Deed
Exhibit J   Form of Opinion from Seller's Counsel
Exhibit K   Form of Opinion from Buyer's Counsel
Exhibit L   xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Exhibit M   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


SCHEDULES

1.1 (91)    List of Seller's Officers
1.1(112)    Exceptions to Title
1.1(158)    Transferable Permits
2.1(l)      Intellectual Property
2.2(a)      Excluded Transmission and other Assets
2.2(k)      Excluded Real Property Agreements
2.2(l)      Excluded Parcels
2.2(m)      Excluded Other Assets
2.3(i)      Assumed Liabilities and Claims
4.3(a)      Seller's Third Party Consents
4.3(b)      Seller's Required Regulatory Approvals
4.4         Financial Statements; Reports
4.5         Liabilities
4.6         Absence of Certain Changes or Events
4.8         Real Property Agreements
4.9         Insurance Policies and Exceptions
4.10        Environmental Matters

                                      142
<PAGE>

     REDACTED  AREAS  CONTAIN   CONFIDENTIAL   MATERIAL   WITHHELD  FROM  PUBLIC
     DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.

4.11        Noncompliance with Employment Laws
4.12(a)     Benefit Plans
4.12(b)     Benefit Plan Exceptions
4.13(a)     Description of Real Property
4.13(b)     Description of Major Equipment Components and Personal Property
4.14        Notices of Condemnation
4.15(a)     List of Seller's Agreements
4.15(b)     Agreement Exceptions
4.15(c)     Agreement Defaults
4.16        Legal Proceedings and Court Orders
4.17(a)     Permit Violations
4.17(b)     List of Material Permits (other than Transferable Permits)
4.18(a)     License Violations
4.18(b)     List of Material NRC Licenses
4.19        Utility Matters regarding Seller
4.20        Tax Matters
4.21        Year 2000 Compliance
4.22        Tax and Financial Matters Relating to Qualified Decommissioning Fund
4.23        Financial Matters Relating to Nonqualified Decommissioning Fund
5.3(a)      Buyer's Third Party Consents
5.3(b)      Buyer's Required Regulatory Approvals
5.7         Utility Matters regarding Buyer
6.1         Permitted Activities Prior to Closing
6.8(e)      Pollution Control Facilities
6.10(d)     IBEW Collective Bargaining Agreements
6.15        Buyer's Required Insurance
6.17        Site Remediation

                                      143
<PAGE>

         ASSET PURCHASE AGREEMENT

ASSET  PURCHASE  AGREEMENT,  dated as of June 30, 1999, by and between  Illinois
Power Company,  an Illinois  corporation ("IP" or "Seller"),  and AmerGen Energy
Company,  L.L.C., a Delaware limited  liability  company  ("Buyer").  Seller and
Buyer are  referred  to  individually  as a  "Party,"  and  collectively  as the
"Parties."

         W I T N E S S E T H

WHEREAS,  Seller owns the Clinton Power Station ("CPS"),  NRC Facility Operating
License No. NPF-62,  located near Clinton,  Illinois, and certain facilities and
other assets associated therewith and ancillary thereto; and

WHEREAS,  Buyer desires to purchase and assume,  and Seller  desires to sell and
assign,  the  Purchased  Assets (as  defined in Section  2.1 below) and  certain
associated  liabilities,  upon the terms and conditions hereinafter set forth in
this Agreement.

NOW,  THEREFORE,  in  consideration  of the mutual  covenants,  representations,
warranties and  agreements  hereinafter  set forth,  and intending to be legally
bound hereby, the Parties agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

     1.1  Definitions.  As used in this Agreement,  the following terms have the
meanings specified in this Section 1.1.

     (1)  "Affiliate"  has the  meaning  set forth in Rule 12b-2 of the  General
Rules and Regulations under the
Exchange Act.

     (2)  "Agreement"  means this Asset  Purchase  Agreement  together  with the
Schedules and Exhibits hereto, as the same may be amended from time to time.

     (3) "Ancillary  Agreements" means the Assignment and Assumption  Agreement,
the Easement Agreement, the Interconnection Agreement, the PPA, the Post-Closing
Decommissioning   Trust   Agreement,   the  Electric  Service   Agreement,   the

                                      144
<PAGE>

Environmental  Laboratory Lease, the Emergency  Off-Site Facility Lease, and the
IP Service Agreement, as the same may be amended from time to time.

     (4)  "Assignment  and  Assumption   Agreement"  means  the  Assignment  and
Assumption  Agreement  between  Seller and Buyer,  substantially  in the form of
Exhibit A hereto, by which Seller,  subject to the terms and conditions  hereof,
shall assign Seller's Agreements, the Real Property Agreements, the Transferable
Permits,  certain  intangible  assets  and other  Purchased  Assets to Buyer and
whereby Buyer shall assume the Assumed Liabilities and Obligations.

     (5)  "Assumed  Liabilities  and  Obligations"  has the meaning set forth in
Section 2.3.

     (6) "Atomic Energy Act" means the Atomic Energy Act of 1954, as amended.

     (7) "Benefit Plans" has the meaning set forth in Section 4.12(a).

     (8)  "Bill of Sale"  means the Bill of Sale,  substantially  in the form of
Exhibit B hereto,  to be delivered at the Closing,  with respect to the Tangible
Personal Property  included in the Purchased Assets  transferred to Buyer at the
Closing.

     (9) "Business Day" means any day other than Saturday, Sunday and any day on
which  banking  institutions  in the State of Illinois are  authorized by law or
other governmental action to close.

     (10) "Buyer Benefit Plans" has the meaning set forth in Section 6.10(f).

     (11) "Buyer Indemnitee" has the meaning set forth in Section 8.1(b).

     (12) "Buyer  Material  Adverse Effect" has the meaning set forth in Section
5.3(a).

     (13) "Buyer NQF" has the meaning set forth in Section 6.12(a).

     (14) "Buyer QF" has the meaning set forth in Section 6.12(a).

     (15) "Buyer's Required  Regulatory  Approvals" has the meaning set forth in
Section 5.3(b).

     (16) "Buyer's Total Basis" has the meaning set forth in Section 6.12(b).

                                      145
<PAGE>

     (17) "Byproduct  Material" means any radioactive  material  (except Special
Nuclear  Material)  yielded in, or made radioactive by, exposure to radiation in
the process of producing or utilizing Special Nuclear Material.

     (18) "Cash Purchase Price" has the meaning set forth in Section 3.2.

     (19) "Closing" has the meaning set forth in Section 3.1.

     (20) "Closing Adjustment" has the meaning set forth in Section 3.3(b).

     (21) "Closing Date" has the meaning set forth in Section 3.1.

     (22) "COBRA" means the Consolidated  Omnibus Budget  Reconciliation  Act of
1985, as amended.

     (23) "Code" means the Internal Revenue Code of 1986, as amended.

     (24) "Commercially  Reasonable Efforts" means efforts which are designed to
enable a Party, directly or indirectly,  to satisfy a condition to, or otherwise
assist in the consummation  of, the transactions  contemplated by this Agreement
and which do not  require  the  performing  Party to expend  any funds or assume
liabilities  other than  expenditures  and  liabilities  which are customary and
reasonable in nature and amount in the context of the transactions  contemplated
by this Agreement.

     (25) "Confidentiality Agreement" means the Confidentiality Agreement, dated
March 12, 1999, by and among Seller,  Buyer and PECO, as modified by the Interim
Agreement.

     (26) "Construction  Waste Landfill" means the real property  containing the
demolition and construction landfill, which is identified separately on Schedule
4.13(a) but is included as part of the Purchased Assets.

     (27) "CPS" has the meaning set forth in the preamble.

     (28)  "Decommissioning"  means the complete  retirement  and removal of the
Facilities from service and the restoration of the Site, as well as any planning
and administrative activities incidental thereto, including, without limitation,
(a)  the  dismantlement,  decontamination,  storage  and/or  entombment  of  the

                                      146
<PAGE>

Facilities, in whole or in part, and any reduction or removal, whether before or
after termination of the NRC license for the Facilities, of radioactivity at the
Site and (b) all  activities  necessary for the  retirement,  dismantlement  and
decontamination of the Facilities to comply with all applicable Nuclear Laws and
Environmental Laws, including the applicable requirements of the Illinois Public
Utilities Act,  Atomic Energy Act and the NRC's rules,  regulations,  orders and
pronouncements  thereunder, the NRC Operating License for the Facilities and any
related decommissioning plan.

     (29) "Decommissioning  Funds" means the Qualified  Decommissioning Fund and
the Nonqualified Decommissioning Fund.

     (30)  "Department  of Energy" means the United States  Department of Energy
and any successor agency thereto.

     (31) "Department of Energy  Decontamination and Decommissioning Fees" means
all fees related to the Department of Energy's  Special  Assessment of utilities
for the Uranium Enrichment  Decontamination and Decommissioning Fund pursuant to
Sections  1801,  1802 and 1803 of the Atomic  Energy Act and the  Department  of
Energy's  implementing  regulations  at 10 C.F.R.  Part 766, or any similar fees
assessed  under amended or  superseding  statutes or  regulations  applicable to
separative  work  units  purchased  from the  Department  of  Energy in order to
decontaminate  and  decommission  the Department of Energy's  gaseous  diffusion
enrichment facilities.

     (32) "Department of Justice" means the United States  Department of Justice
and any successor agency thereto.

     (33) "Direct Claim" has the meaning set forth in Section 8.2(c).

     (34) "Easement  Agreement" means the Easement  Agreement  between Buyer and
Seller, to be entered into at the Closing, containing the Easements with respect
to the Real Property referred to on Exhibit C hereto and such other Easements as
shall be mutually acceptable to Buyer and Seller.

     (35)  "Easements"   means,  with  respect  to  the  Purchased  Assets,  the
easements,  licenses  and  access  rights  to be  granted  by Buyer or Seller or
reserved by Seller  pursuant to the  Interconnection  Agreement  or the Easement
Agreement,  including,  without limitation,  easements  authorizing access, use,
maintenance, construction, repair, replacement and other activities by Seller or
Buyer, as the case may be.

     (36)  "Electric  Service  Agreement"  means the  service  agreement,  to be
entered into at the Closing,  under which Seller shall provide  electric service
to CPS after the Closing Date.

                                      147
<PAGE>

     (37) "Emergency  Off-Site Facility Lease" means the lease between Buyer and
Seller,  to be entered into at the  Closing,  under which Buyer shall lease from
Seller certain back-up emergency  off-Site  facilities and a public  information
center in  Decatur,  Illinois,  which lease shall  comply  with  applicable  NRC
requirements  and shall  contain  such other  terms and  conditions  as shall be
mutually acceptable to Buyer and Seller.

     (38) "Emission  Allowance" means all authorizations to emit specified units
of pollutants or Hazardous Substances from the Purchased Assets, which units are
established by the Governmental  Authority with  jurisdiction over the Purchased
Assets  under  (a) an air  pollution  control  and  emission  reduction  program
designed to mitigate global warming or interstate or intrastate transport of air
pollutants,  (b) a program  designed to mitigate  impairment of surface  waters,
watersheds, or groundwater or (c) any pollution reduction program with a similar
purpose.  Allowances  include  allowances,  as described  above,  regardless  of
whether the Governmental  Authority establishing such allowances designates such
allowances  by a name  other  than  "allowances."  The  amount  of the  Emission
Allowances  shall be the  amount in effect  on the date  hereof or  subsequently
authorized  in  respect  of  the  Purchased  Assets,  reduced  by  the  Emission
Allowances  consumed in the operation of the Purchased  Assets  between the date
hereof and the Closing Date in the ordinary course of business.

     (39)  "Emission  Reduction  Credits"  means  credits,  in  units  that  are
established by the Governmental  Authority with  jurisdiction over the Purchased
Assets that has obtained the credits, resulting from reductions in the emissions
of air  pollutants  from an  emitting  source or  facility  (including,  without
limitation,  and to the extent allowable under  applicable law,  reductions from
shutdowns or control of emissions  beyond that required by applicable  law) that
(a) have been identified by the IEPA as complying with  applicable  Illinois law
governing the establishment of such credits (including, without limitation, that
such emissions reductions are enforceable,  permanent, quantifiable and surplus)
and listed in the Emissions  Reduction Credit Registry maintained by the IEPA or
with  respect to which such  identification  and listing are pending or (b) have
been certified by any other applicable  Governmental Authority as complying with
the law and regulations  governing the establishment of such credits (including,
without   limitation,   certification   that  such   emissions   reductions  are
enforceable,  permanent,  quantifiable and surplus).  The term includes Emission
Reduction  Credits that have been  approved by the IEPA and are  awaiting  USEPA
approval.  The  term  also  includes  certified  air  emissions  reductions,  as
described above,  regardless as to whether the Governmental Authority certifying
such  reductions  designates  such certified air emissions  reductions by a name
other than "emission  reduction  credits." The amount of the Emission  Reduction
Credits  shall be the  amount  in  effect  on the date  hereof  or  subsequently
authorized in respect of the Purchased Assets, reduced by the Emission Reduction

                                      148
<PAGE>

Credits  consumed in the  operation  of the  Purchased  Assets  between the date
hereof and the Closing Date in the ordinary course of business.

     (40)  "Encumbrances"  means  any  mortgages,   pledges,   liens,   security
interests,  conditional  and  installment  sale  agreements,  activity  and  use
limitations,  conservation easements, deed restrictions, easements, encumbrances
and charges of any kind.

     (41) "Energy  Reorganization  Act" means the Energy  Reorganization  Act of
1974, as amended.

     (42)  "Environment"  means all air,  surface  water,  groundwater  or land,
including land surface or subsurface,  including all fish,  wildlife,  biota and
all other natural resources.

     (43)  "Environmental  Claim"  means any and all pending  and/or  threatened
administrative or judicial  actions,  suits,  orders,  claims,  liens,  notices,
notices of  violation,  investigations,  complaints,  requests for  information,
proceedings or other written communication,  whether criminal or civil, pursuant
to or relating to any  applicable  Environmental  Law by any Person  (including,
without  limitation,  any Governmental  Authority,  private person and citizens'
group) based upon, alleging,  asserting, or claiming any actual or potential (a)
violation  of, or liability  under any  Environmental  Law, (b) violation of any
Environmental  Permit, or (c) liability for investigatory  costs, cleanup costs,
removal  costs,  remedial  costs,  response  costs,  natural  resource  damages,
property damage,  personal injury, fines, or penalties arising out of, based on,
resulting from or related to, the presence,  Release, or threatened Release into
the  Environment  of any  Hazardous  Substances  at any location  related to the
Purchased Assets, including,  without limitation, any off-Site location to which
Hazardous Substances,  or materials containing Hazardous  Substances,  were sent
for handling, storage, treatment or disposal prior to the Closing Date.

     (44)  "Environmental  Clean-up  Site" means any location which is listed or
publicly proposed for listing on the National Priorities List, the Comprehensive
Environmental Response, Compensation and Liability Information System, or on any
similar state list of sites requiring investigation or cleanup.

     (45)  "Environmental  Condition" means the presence or Release of Hazardous
Substances at the Site prior to the Closing Date.

(46) "Environmental  Laboratory Lease" means the lease between Buyer and Seller,
to be entered into at the Closing, under which Seller shall lease from Buyer the
environmental  testing  laboratory located on the Site, which lease shall comply

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with  applicable  NRC  requirements  and  shall  contain  such  other  terms and
conditions as shall be mutually acceptable to Buyer and Seller.

     (47)  "Environmental  Laws"  means all  federal,  state and local civil and
criminal  laws,  regulations,  rules,  ordinances,  codes,  decrees,  judgments,
directives,  or judicial or  administrative  orders  relating  to  pollution  or
protection  of the  Environment,  natural  resources or human health and safety,
including,  without limitation, laws relating to Releases or threatened Releases
of Hazardous Substances (including, without limitation, Releases to ambient air,
surface water,  groundwater,  land,  surface and subsurface strata) or otherwise
relating to the manufacture,  processing, distribution, use, treatment, storage,
Release, transport, disposal or handling of Hazardous Substances. "Environmental
Laws" include,  without limitation,  the Comprehensive  Environmental  Response,
Compensation and Liability Act ("CERCLA") (42 U.S.C. sections 9601 et seq.), the
Hazardous  Materials  Transportation Act (49 U.S.C.  sections 1801 et seq.), the
Resource  Conservation  and Recovery Act (42 U.S.C.  sections 6901 et seq.), the
Federal Water Pollution Control Act (33 U.S.C. sections 1251 et seq.), the Clean
Air Act (42 U.S.C.  sections 7401 et seq.), the Toxic Substances Control Act (15
U.S.C. sections 2601 et seq.), the Oil Pollution Act (33 U.S.C. sections 2701 et
seq.),  the  Emergency  Planning  and  Community  Right-to-Know  Act (42  U.S.C.
sections  11001 et seq.),  the  Occupational  Safety  and  Health Act (29 U.S.C.
sections  651 et seq.),  the  Illinois  Environmental  Protection  Act (415 ILCS
5/1-101 et seq.),  the Illinois Solid Waste Management Act (415 ILCS 20/1-101 et
seq.),  the Illinois Water Pollutant  Discharge Act (415 ILCS 25/1-101 et seq.),
the  Illinois  Groundwater  Protection  Act (415 ILCS  55/1-101  et  seq.),  the
Illinois  Toxic  Pollution  Prevention  Act (415 ILCS  85/1-101  et  seq.),  the
Illinois  Pollution  Prevention Act (415 ILCS  115/1-101 et seq.),  the Illinois
Responsible  Party  Transfer Act (765 ILCS  90/1-101 et seq.),  and  regulations
promulgated  under such  federal and state  laws,  and all other state and local
laws  analogous  to any of the above,  and any common law  doctrine,  including,
without limitation, negligence, nuisance, trespass, personal injury, or property
damage  related to or  arising  out of the  presence,  Release  or  exposure  to
Hazardous Substances.  Notwithstanding the foregoing,  Environmental Laws do not
include Nuclear Laws.

     (48)  "Environmental  Permit"  means any federal,  state or local  permits,
licenses,  approvals,  consents or  authorizations  required by any Governmental
Authority under or in connection with any Environmental Law and includes any and
all orders,  consent  orders or binding  agreements  issued or entered into by a
Governmental Authority under any applicable Environmental Law.

     (49) "ERISA" means the Employee  Retirement Income Security Act of 1974, as
amended.

     (50) "ERISA Affiliate" has the meaning set forth in Section 2.4(k).

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     (51) "ERISA Affiliate Plans" has the meaning set forth in Section 2.4(k).

     (52) "Estimated Adjustment" has the meaning set forth in Section 3.3(b).

     (53)  "Estimated  Closing  Statement"  has the meaning set forth in Section
3.3(b).

     (54) "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     (55)  "Excluded  Assets"  has the  meaning  set  forth in  Section  2.2 and
includes,  without  limitation,  the  "Excluded  Parcels"  described in Schedule
2.2(l), and the "Excluded Other Assets" described in Schedule 2.2(m).

     (56) "Excluded Liabilities" has the meaning set forth in Section 2.4.

     (57) "Exempt  Wholesale  Generator" means an exempt wholesale  generator as
defined in Section 32 of the  Holding  Company  Act and the  regulations  issued
thereunder.

     (58)  "Facilities"  means  the  plant,  facilities,  equipment,  materials,
supplies and improvements owned by Seller and included in the Purchased Assets.

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     (60) "Federal Power Act" means the Federal Power Act, as amended.

     (61)  "Federal  Trade  Commission"  means the United  States  Federal Trade
Commission and any successor agency thereto.

     (62) "FERC" means the United States  Federal Energy  Regulatory  Commission
and any successor agency thereto.

     (63) "FIRPTA  Affidavit" means the Foreign  Investment in Real Property Tax
Act Certification and Affidavit, substantially in the form of Exhibit D hereto.

     (64) "Good  Utility  Practices"  means any of the  practices,  methods  and
activities approved by a significant portion of the electric utility industry as

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good practices  applicable to nuclear  generating  facilities of similar design,
size and capacity or any of the practices,  methods or activities  which, in the
exercise of reasonable  judgment by a prudent  nuclear  operator in light of the
facts  known at the time the  decision  was  made,  reasonably  could  have been
expected  to  accomplish  the  desired  result  consistent  with  good  business
practices, reliability,  efficiency, safety, expedition and applicable law. Good
Utility  Practices  are not  intended  to be limited to the  optimal  practices,
methods or acts to the  exclusion  of all  others,  but rather to be  practices,
methods or acts generally accepted in the electric utility industry.

     (65)   "Governmental   Authority"   means  any  federal,   state  or  local
governmental,  regulatory,  legislative,  executive  or  administrative  agency,
authority,   commission,   body,   department,   board,  or  other  governmental
subdivision, court, tribunal, arbitrating body or other governmental authority.

     (66)  "Hazardous  Substances"  means  (a) any  petrochemical  or  petroleum
products,  oil or coal ash,  radioactive  materials,  radon gas, asbestos in any
form that is or could become  friable,  urea  formaldehyde  foam  insulation and
transformers  or other  equipment that contains  dielectric  fluid which contain
levels of polychlorinated biphenyls, (b) any chemicals,  materials or substances
defined as or included in the definition of "hazardous  substances,"  "hazardous
wastes," "hazardous materials," "hazardous constituents,"  "restricted hazardous
materials,"    "extremely    hazardous    substances,"    "toxic    substances,"
"contaminants," "pollutants," "toxic pollutants" or words of similar meaning and
regulatory  effect  under any  applicable  Environmental  Law, and (c) any other
chemical,  material or substance,  exposure to which is  prohibited,  limited or
regulated by any applicable  Environmental Law; excluding,  however, any Nuclear
Material to the extent regulated under any Nuclear Laws.

     (67) "High Level Waste" means (a)  irradiated  nuclear  reactor  fuel,  (b)
liquid wastes resulting from the operation of the first cycle solvent extraction
system,  or  its  equivalent,   and  the  concentrated  wastes  from  subsequent
extraction  cycles,  or  their  equivalent,   in  a  facility  for  reprocessing
irradiated  reactor fuel, and (c) solids into which such liquid wastes have been
converted.

     (68) "High  Level Waste  Repository"  means a facility  which is  designed,
constructed  and  operated by or on behalf of the  Department  of Energy for the
storage  and  disposal  of Spent  Nuclear  Fuel and other  High  Level  Waste in
accordance with the requirements set forth in the Nuclear Waste Policy Act.

     (69) "Holding  Company Act" means the Public Utility Holding Company Act of
1935, as amended.

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     (70) "HSR Act" means the  Hart-Scott-Rodino  Antitrust  Improvements Act of
1976, as amended.

     (71) "IBEW" means Locals 51 and 1306 of the  International  Brotherhood  of
Electrical Workers.

     (72) "IBEW Collective  Bargaining  Agreements" has the meaning set forth in
Section 6.10(d).

     (73) "ICC" means the Illinois Commerce  Commission and any successor agency
thereto.

     (74) "IDNR"  means the Illinois  Department  of Natural  Resources  and any
successor agency thereto.

     (75)  "IDNS"  means the  Illinois  Department  of  Nuclear  Safety  and any
successor agency thereto.

     (76) "IEPA"  means the  Illinois  Environmental  Protection  Agency and any
successor agency thereto.

     (77) "IPCB" means the Illinois  Pollution  Control  Board and any successor
agency thereto.

     (78) "Income Tax" means any federal,  state, local or foreign Tax (a) based
upon, measured by or calculated with respect to net income,  profits or receipts
(including,  without  limitation,  capital gains Taxes and minimum Taxes) or (b)
based upon, measured by or calculated with respect to multiple bases (including,
without  limitation,  corporate  franchise taxes) if one or more of the bases on
which such Tax may be based,  measured  by or  calculated  with  respect  to, is
described in clause (a), in each case together  with any interest,  penalties or
additions to such Tax.

     (79) "Indemnifiable Loss" has the meaning set forth in Section 8.1(a).

     (80)  "Indemnifying  Party" has the meaning  set forth in Section  8.1(d) .

     (81)  "Indemnitee"  means a Buyer Indemnitee or Seller  Indemnitee,  as the
case may be.

     (82) "Independent  Accounting Firm" means such independent  accounting firm
of national reputation as is mutually appointed by Seller and Buyer.

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     (83)  "Inspection"  means all tests,  reviews,  examinations,  inspections,
investigations,  verifications,  samplings and similar  activities  conducted by
Buyer or its agents or  Representatives  with  respect to the  Purchased  Assets
prior to the Closing.

     (84)   "Intellectual   Property"  means  all  patents  and  patent  rights,
trademarks and trademark  rights,  inventions,  copyrights and copyright  rights
owned by Seller and necessary for the operation and maintenance of the Purchased
Assets,  and all pending  applications for registrations of patents,  trademarks
and copyrights, as set forth in Schedule 2.1(l).

     (85)  "Interconnection  Agreement"  means  the  Interconnection  Agreement,
between Seller and Buyer, substantially in the form of Exhibit E hereto.

     (86) "Interim Agreement" means the letter agreement,  dated March 31, 1999,
addressed to IP and which is by and among Buyer, PECO and IP.

     (87)  "Inventories"  means nuclear fuel  (including fuel in the reactor) or
alternative fuel inventories,  materials,  spare parts,  consumable supplies and
chemical and gas inventories relating to the operation of the Facilities located
at, or in transit to, the Facilities.

     (88) "IP" has the meaning set forth in the preamble.

     (89) "IP Service  Agreement" means the IP Service  Agreement between Seller
and Buyer, to be entered into at the Closing,  containing the terms set forth on
Exhibit F hereto with respect to information technology services, and containing
such other terms and  conditions  as shall be mutually  acceptable  to Buyer and
Seller,  under which the Seller will provide  certain  administrative  and other
services to Buyer for a specified period after the Closing Date.

     (90)  "IRS"  means the  United  States  Internal  Revenue  Service  and any
successor agency thereto.

     (91) "Knowledge"  means the actual  knowledge of the corporate  officers of
the specified Person charged with  responsibility  for the particular  function,
and with respect to the Seller,  only those corporate  officers and employees of
Seller  set forth on  Schedule  1.1(91),  after  reasonable  inquiry  by them of
selected  employees of such Person whom they believe,  in good faith,  to be the
persons responsible for the subject matter of the inquiry.

     (92) "Leased Employee Agreement" means the Leased Employee Agreement, dated
March 31, 1999, by and among PECO, IP and John P. McElwain.

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     (93)  "Loss"  means  any  and  all   damages,   fines,   fees,   penalties,
deficiencies,   losses  and  expenses   (including,   without  limitation,   all
Remediation  costs, fees of attorneys,  accountants and other experts,  or other
expenses of litigation or proceedings or of any claim, default or assessment).

     (94) "Low Level  Waste" means waste  material  which  contains  radioactive
nuclides emitting primarily beta or gamma radiation,  or both, in concentrations
or  quantities   which  exceed   applicable   federal  or  state  standards  for
unrestricted  release.  Low Level Waste does not include waste  containing  more
than ten (10) nanocuries of transuranic contaminants per gram of material, Spent
Nuclear Fuel,  or material  classified as either High Level Waste or waste which
is unsuited for disposal by  near-surface  burial under any  applicable  federal
regulations.

     (95) "Management  Agreement"  means the Agreement,  dated as of January 15,
1998,  by and  between  PECO  and  IP,  as  amended  by that  certain  Incentive
Compensation  Agreement to Amend the Management  Agreement,  dated as of May 19,
1998,  by Amendment  No. 2, dated March 31, 1999,  and by Amendment No. 3, dated
April 21, 1999.

     (96) "Material Adverse Effect" means any change (or changes taken together)
in, or effect  on,  the  Purchased  Assets  that is  materially  adverse  to the
operations or condition  (financial or otherwise) of the Purchased Assets, taken
as a whole,  other than (i) any change or effect  (or  changes or effects  taken
together)  generally  affecting the international,  national,  regional or local
electric  industry as a whole, or the nuclear power industry as a whole, and not
affecting  the  Purchased  Assets  or  the  Parties  in  any  manner  or  degree
significantly  different  than such  industries as a whole,  including,  without
limitation,  changes in local  wholesale or retail  markets for electric  power;
national,  regional  or local  electric  transmission  systems or the  operation
thereof,  (ii) any change or effect  (or  changes  or  effects  taken  together)
resulting from action or inaction by a Governmental  Authority not  specifically
relating to the Purchased  Assets,  or (iii) any change or effect (or changes or
effects taken  together)  directly  arising out of or resulting  from a material
breach by PECO under Section 6.2 of the Management Agreement or directly arising
out of or resulting  from conduct of a PECO  employee that  constitutes  willful
misconduct  or gross  negligence;  provided,  however,  that conduct of non-PECO
employees shall not be imputed to PECO for purposes of this Agreement.

     (97) "Mortgage  Indenture"  means the mortgage and deed of trust originally
granted to Harris Trust and Savings  Bank,  as Trustee,  dated as of November 1,
1943, and all supplements  thereto;  and the deed of trust originally granted to
Harris Trust and Savings Bank, as Trustee, dated as of November 1, 1992, and all
supplements thereto.

     (98)  "National  Labor  Relations  Board" means the United States  National
Labor Relations Board and any successor agency thereto.

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     (100) "Non-Union Employees" has the meaning set forth in Section 6.10(b).

     (101) "NRC" means the United States Nuclear  Regulatory  Commission and any
successor agency thereto.

     (102) "Nuclear Insurance  Policies" means all insurance policies carried by
or for the  benefit  of Seller  with  respect  to the  ownership,  operation  or
maintenance  of the  Facilities,  including all liability,  property  damage and
business  interruption  policies  in  respect  thereof.   Without  limiting  the
generality of the foregoing,  the term "Nuclear Insurance Policies" includes all
policies issued or administered by Nuclear Electric  Insurance  Limited ("NEIL")
or American Nuclear Insurers ("ANI").

     (103) "Nuclear Laws" means all federal, state, local,  provincial,  foreign
and  international  civil and criminal  laws,  regulations,  rules,  ordinances,
codes,  decrees,  judgments,  directives,  or judicial or administrative  orders
relating to the regulation of nuclear power plants,  Source Material,  Byproduct
and Special Nuclear  Material;  the regulation of Low Level Waste and High Level
Waste; the  transportation  and storage of Nuclear  Material;  the regulation of
Safeguards  Information;  the  regulation  of nuclear  fuel;  the  enrichment of
uranium;  the disposal and storage of High Level Waste and Spent  Nuclear  Fuel;
contracts for and payments into the Nuclear Waste Fund; and, as applicable,  the
antitrust laws and the Federal Trade  Commission Act to specified  activities or
proposed  activities of certain licensees of commercial  nuclear  reactors,  but
shall not include  Environmental  Laws. "Nuclear Laws" include the Atomic Energy
Act of  1954,  the  Price-Anderson  Act,  the  Energy  Reorganization  Act,  the
Convention on the Physical Protection of Nuclear Material  Implementation Act of
1982 (Public Law 97 - 351; 96 Stat.  1663),  the Foreign  Assistance Act of 1961
(22 U.S.C. section 2429 et seq.), the Nuclear  Non-Proliferation Act of 1978 (22
U.S.C.  section  3201),  the Low-Level  Radioactive  Waste Policy Act (42 U.S.C.
section 2021b et seq.), the Nuclear Waste Policy Act, the Low-Level  Radioactive
Waste Policy Amendments Act of 1985 (42 U.S.C.  section 2021d,  471), the Energy
Policy Act of 1992 (4 U.S.C. section 13201 et seq.), and any state or local laws
analogous to the foregoing.

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     (104) "Nuclear  Material" means Source Material,  Special Nuclear Material,
Low Level Waste, High Level Waste, Byproduct Material and Spent Nuclear Fuel.

     (105) "Nuclear Waste Fund" means the fund  established by the Department of
Energy under the Nuclear  Waste Policy Act in which the Spent  Nuclear Fuel Fees
to be used for the  design,  construction  and  operation  of a High Level Waste
Repository  and other  activities  related to the storage and  disposal of Spent
Nuclear Fuel and/or High Level Waste are deposited.

     (106)  "Nuclear  Waste  Policy Act" means the Nuclear  Waste  Policy Act of
1982, as amended.

     (107) "Observers" has the meaning set forth in Section 6.1(c).

     (108) "Party" (and the  corresponding  term  "Parties") has the meaning set
forth in the preamble.

     (109) "PBGC" means the Pension Benefit Guaranty Corporation  established by
ERISA.

     (110) "PECO" means PECO Energy Company, a Pennsylvania corporation.

     (111) "Permits" has the meaning set forth in Section 4.17(a).

     (112)  "Permitted   Encumbrances"  means  (a)  the  Easements,   (b)  those
exceptions  to title to the Purchased  Assets  listed in Schedule  1.1(112) with
respect to Real Property and Tangible Personal Property, (c) with respect to any
date before the Closing Date,  Encumbrances  created by the Mortgage  Indenture,
(d) statutory liens for Taxes or other  governmental  charges or assessments not
yet due or delinquent or the validity of which is being  contested in good faith
by appropriate proceedings provided that the aggregate amount being so contested
does not exceed $250,000, (e) mechanics',  materialmens',  carriers',  workers',
repairers' and other similar liens arising or incurred in the ordinary course of
business  relating to obligations as to which there is no default on the part of
Seller or the validity of which is being  contested in good faith,  and which do
not, individually or in the aggregate, exceed $250,000, (f) zoning, entitlement,
conservation  restriction  and  other  land  use and  environmental  regulations
imposed  by  Governmental  Authorities  which  do  not,  individually  or in the
aggregate,  materially  detract  from  the  value  of the  Purchased  Assets  as
currently  used and neither  secure  indebtedness  nor,  individually  or in the
aggregate,  result in a  Material  Adverse  Effect,  and (g) such  other  liens,
imperfections in or failure of title, charges,  restrictions,  encroachments and
defects in title  which do not  materially,  individually  or in the  aggregate,
detract from the value of the  Purchased  Assets as currently  used or interfere

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with the present use or operation  of the  Purchased  Assets and neither  secure
indebtedness, nor individually or in the aggregate, result in a Material Adverse
Effect.

     (113)  "Person"  means  any  individual,   partnership,  limited  liability
company,  joint venture,  corporation,  trust,  unincorporated  organization  or
Governmental Authority.

     (114)  "Pollution  Control  Bonds"  has the  meaning  set forth in  Section
2.4(p).

     (115) "Pollution  Control  Facilities" has the meaning set forth in Section
6.8(e).

     (116)  "Post-Closing  Adjustment"  has the  meaning  set  forth in  Section
3.3(c).

     (117) "Post-Closing Decommissioning Trust Agreement" means the Post-Closing
Decommissioning Trust Agreement between the Buyer and the Trustee, substantially
in the form of  Exhibit G  hereto,  pursuant  to which any  assets of any of the
Decommissioning  Funds to be  transferred  by Seller at the Closing  pursuant to
Section 6.12 hereof will be held in trust.

     (118) "Post-Closing Statement" has the meaning set forth in Section 3.3(c).

     (119) "PPA" means the Power  Purchase  Agreement  between Seller and Buyer,
substantially in the form of Exhibit H hereto,  under which Seller will agree to
purchase capacity and energy from Buyer for a period after the Closing Date.

     (120)  "Price-Anderson  Act" means Section 170 of the Atomic Energy Act and
related provisions of Section 11 of the Atomic Energy Act.

     (121)  "Proposed  Post-Closing  Adjustment"  has the  meaning  set forth in
Section 3.3(c).

     (122) "Proprietary  Information" of a Party means all information about the
Party or its Affiliates,  including their  respective  properties or operations,
furnished  to the  other  Party  or its  Representatives  by such  Party  or its
Representatives,  after the date hereof,  regardless  of the manner or medium in
which it is furnished, including information provided to a Party pursuant to the
Confidentiality  Agreement.  In addition,  after the Closing Date,  "Proprietary
Information" includes any non-public  information regarding the Purchased Assets
or the transactions contemplated by this Agreement. Proprietary Information does
not include information that (a) is or becomes generally available to the public
(other  than  as  a  result  of  a   disclosure   by  the  other  Party  or  its
Representatives in violation of a confidentiality  agreement), (b) was available
to the other Party on a  nonconfidential  basis prior to its  disclosure  by the
Party or its  Representatives,  (c)  becomes  available  to the other Party on a
nonconfidential  basis  from a Person,  other than the  disclosing  Party or its
Representatives,  who is not otherwise bound by a confidentiality agreement with

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the  disclosing  Party or its  Representatives,  or is not  otherwise  under any
obligation to the disclosing Party or any of its Representatives not to transmit
the  information  to  the  other  Party  or  its  Representatives,   or  (d)  is
independently developed by the other Party.

     (123) "Purchased Assets" has the meaning set forth in Section 2.1.

     (124) "Purchase Price" has the meaning set forth in Section 3.2.

     (125) "Qualified  Decommissioning  Fund" means the external trust fund that
meets the requirements of Code Section 468A and Treas.  Reg.  section  1.468A-5,
maintained  by  Seller  with  respect  to the  Facilities  prior to the  Closing
pursuant to the Seller's Decommissioning Trust Agreement and maintained by Buyer
after the Closing pursuant to the Post-Closing  Decommissioning  Trust Agreement
to the extent assets are  transferred to such fund by Seller pursuant to Section
6.12.

     (126) "Real Property" has the meaning set forth in Section 2.1(a).

     (127) "Real Property Agreements" has the meaning set forth in Section 4.8.

     (128) "Receiving Party" has the meaning set forth in Section 6.6(f).

     (129) "Release" means any spilling,  leaking, pumping,  pouring,  emitting,
emptying, discharging,  injecting, escaping, leaching, dumping or disposing of a
Hazardous Substance into the Environment.

     (130)  "Remediation"  means action of any kind  required  under  applicable
Environmental Law to address a Release,  the threat of a Release or the presence
of Hazardous Substances at the Site or an off-Site location,  including, without
limitation,  any or all of the following activities to the extent they relate to
or arise from the  presence of a Hazardous  Substance at the Site or an off-Site
location:  (a)  monitoring,   investigation,   assessment,  treatment,  cleanup,
containment,  removal,  mitigation,  response or restoration work, (b) obtaining
any permits, consents, approvals or authorizations of any Governmental Authority
necessary to conduct any such activity, (c) preparing and implementing any plans
or  studies  for any such  activity,  (d)  obtaining  a  written  notice  from a
Governmental  Authority with  jurisdiction over the Site or an off-Site location
under  Environmental  Laws that no material  additional work is required by such
Governmental Authority, (e) the use, implementation,  application, installation,
operation  or  maintenance  of  remedial  or  removal  actions on the Site or an
off-Site location,  remedial  technologies  applied to the surface or subsurface
soils,  excavation and off-Site treatment or disposal of soils, systems for long
term  treatment  of  surface  water  or  groundwater,  engineering  controls  or

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institutional  controls, and (f) any other activities reasonably determined by a
Party to be necessary or  appropriate or required  under  Environmental  Laws to
address  the  presence  or Release  of  Hazardous  Substances  at the Site or an
off-Site location.

     (131)  "Replacement  Welfare  Plans" has the  meaning  set forth in Section
6.10(e).

     (132) "Reportable Environmental Condition" means an Environmental Condition
for which a release  notification  must be made to the National  Response Center
pursuant to 40 C.F.R. section 302.6, as may be amended from time to time.

     (133)  "Representatives"  of a Party means the Party and its Affiliates and
their directors,  officers,  employees,  agents, partners,  advisors (including,
without limitation,  accountants, counsel, environmental consultants,  financial
advisors and other authorized representatives) and parents and other controlling
persons.

     (134) "Safeguards  Information" means information not otherwise  classified
as national  security  information  or restricted  data under NRC's  regulations
which specifically  identifies an NRC licensee's  detailed (a) security measures
for the physical protection of Special Nuclear Material or (b) security measures
for the physical protection and location of certain plant equipment vital to the
safety of production or utilization facilities.

     (135) "SEC" means the United States Securities and Exchange  Commission and
any successor agency thereto.

     (136) "Securities Act" means the Securities Act of 1933, as amended.

     (137) "Seller" has the meaning set forth in the preamble.

     (138) "Seller Benefit Plans" has the meaning set forth in Section 6.10(f).

     (139) "Seller's Agreements" means those contracts, agreements, licenses and
leases  relating to the  ownership,  operation and  maintenance of the Purchased
Assets that are being assigned to Buyer as part of the Purchased Assets, as more
particularly described in Schedule 4.15(a).

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     (141) "Seller Indemnitee" has the meaning set forth in Section 8.1(a).

     (142) "Seller's Required Regulatory Approvals" has the meaning set forth in
Section 4.3(b).

     (143)  "Seller's  Savings  Plans"  has the  meaning  set  forth in  Section
6.10(g).

     (144) "Site" means the parcels of land included in the Real  Property.  Any
reference to the Site shall include,  by definition,  the surface and subsurface
elements,  including  the soils and  groundwater  present  at the Site,  and any
reference  to items "at the Site"  shall  include all items "at,  on, in,  upon,
over, across, under and within" the Site.

     (145) "Source  Material"  means (a) uranium or thorium;  or any combination
thereof,  in any physical or chemical  form or (b) ores which  contain by weight
one-twentieth  of one percent (0.05%) or more of (i) uranium,  (ii) thorium,  or
(iii) any combination thereof.  Source Material does not include Special Nuclear
Material.

     (146) "Special  Nuclear  Material" means  plutonium,  uranium-233,  uranium
enriched in the isotope-233 or in the  isotope-235,  and any other material that
the NRC determines to be "Special  Nuclear  Material."  Special Nuclear Material
also refers to any  material  artificially  enriched by any of the  above-listed
materials  or  isotopes.  Special  Nuclear  Material  does  not  include  Source
Material.

     (147)  "Spent  Nuclear  Fuel"  means  fuel that has been  withdrawn  from a
nuclear reactor  following  irradiation,  and has not been chemically  separated
into its  constituent  elements by  reprocessing.  Spent  Nuclear Fuel  includes
Special  Nuclear  Material,   Byproduct  Material,  Source  Material  and  other
radioactive materials associated with nuclear fuel assemblies.

     (148) "Spent  Nuclear Fuel Fees" means those fees  assessed on  electricity
generated  at CPS and sold  pursuant to the  Standard  Contract  for Disposal of
Spent  Nuclear Fuel and/or High Level  Waste,  as provided in Section 302 of the
Nuclear Waste Policy Act and 10 C.F.R. Part 961, as the same may be amended from
time to time.

     (149) "Supplemental Payments" has the meaning set forth in Section 6.12.

     (150)  "Tangible  Personal  Property"  has the meaning set forth in Section
2.1(c).

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     (151) "Tax  Basis"  means the  adjusted  tax basis  determined  for federal
income tax purposes under Code Section 1011(a).

     (152)  "Tax  Return"  means  any  return,   report,   information   return,
declaration,  claim for refund or other  document  (including  any  schedule  or
related  or  supporting  information)  required  to be  supplied  to any  taxing
authority with respect to Taxes including amendments thereto.

     (153) "Taxes" means all taxes,  charges,  fees, levies,  penalties or other
assessments imposed by any federal,  state, local,  provincial or foreign taxing
authority,  including,  without  limitation,  income,  excise,  real or personal
property, sales, transfer,  franchise,  payroll,  withholding,  social security,
gross receipts, license, stamp, occupation, employment or other taxes, including
any interest, penalties or additions attributable thereto.

     (154)  "Technical   Specifications"  means  the  technical   specifications
included  in  the  NRC  Operating   License  for  CPS  in  accordance  with  the
requirements of 10 C.F.R. section 50.36.

     (155) "Termination Date" has the meaning set forth in Section 9.1(b).

     (156) "Third Party Claim" has the meaning set forth in Section 8.2(a).

     (157) xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

     (158) "Transferable  Permits" means those Permits and Environmental Permits
identified in Schedule  1.1(156),  which may be  transferred  to Buyer without a
filing with, notice to, consent or approval of any Governmental Authority.

     (159)   "Transferred   Employee  Records"  means  all  records  related  to
Transferred Employees, including, without limitation, the following information:
(a) skill and development  training,  (b) biographies,  (c) seniority histories,
(d)  salary  and  benefit  information,  (e)  Occupational,  Safety  and  Health
Administration  reports,  (f) active medical  restriction forms, (g) fitness for
duty, and (h) disciplinary actions.

     (160) "Transferred Employees" has the meaning set forth in Section 6.10(b).

     (161)  "Transferred  Non-Union  Employees"  has the  meaning  set  forth in
Section 6.10(b).

     (162)  "Transferred  Union  Employees" has the meaning set forth in Section
6.10(b).

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     (163) "Transition Committee" has the meaning set forth in Section 6.1(b).

     (164) "Transmission Assets" has the meaning set forth in Section 2.2(a).

     (165) "Trustee" means, as the case may be, prior to the Closing the trustee
of the  Decommissioning  Funds  appointed  by Seller  pursuant  to the  Seller's
Decommissioning  Trust  Agreements or after the Closing to the extent the assets
of the Decommissioning Funds are transferred by Seller pursuant to Section 6.12,
the  trustee  appointed  pursuant  to  the  Post-Closing  Decommissioning  Trust
Agreement.

     (166) "Union Employees" has the meaning set forth in Section 6.10(a).

     (167)  "Updated  Safety  Analysis  Report" or "USAR"  means the report,  as
updated,  that is  required  to be  maintained  for CPS in  accordance  with the
requirements of 10 C.F.R. section 50.71(e).

     (168) "USEPA" means the United States  Environmental  Protection Agency and
any successor agency thereto.

     (169)  "WARN  Act"  means the  Federal  Worker  Adjustment  Retraining  and
Notification Act of 1988, as amended.

     (170) "Year 2000 Compliant,"  "Year 2000 Qualified," "Year 2000 Assets" and
"Year  2000  Ready"  have the  meanings  set forth in Section  4.21.  "Year 2000
Compliance" has a meaning correlative to the foregoing.

     1.2 Certain  Interpretive  Matters.  In this Agreement,  unless the context
otherwise  requires,  the singular shall include the plural, the masculine shall
include  the  feminine  and  neuter,  and vice  versa.  The term  "includes"  or
"including" shall mean "including without limitation."  References to a Section,
Article, Exhibit or Schedule shall mean a Section,  Article, Exhibit or Schedule
of this Agreement,  and reference to a given agreement or instrument  shall be a
reference to that agreement or instrument as modified, amended, supplemented and
restated  through the date as of which such  reference is made.  With respect to
the Schedules  under Articles IV and V of this  Agreement  (other than Schedules
4.8, 4.10, 4.13, 4.15, 4.16, 4.22, 4.23,  5.3(a) and 5.3(b)),  matters fully and
adequately  disclosed on one Schedule shall be deemed  disclosed for purposes of
any other relevant Schedule under such Articles.


         ARTICLE II

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                                PURCHASE AND SALE


     2.1 Transfer of Assets.  Upon the terms and subject to the  satisfaction of
the  conditions  contained in this  Agreement,  at the Closing Seller will sell,
assign, convey,  transfer and deliver to Buyer, and Buyer will purchase,  assume
and acquire  from  Seller,  free and clear of all  Encumbrances  (except for and
subject to Permitted Encumbrances), all of Seller's right, title and interest in
and to all of the  assets  constituting,  or  used  in the  ordinary  course  of
business to operate the Facilities (but excluding assets used only  incidentally
in the  operation  of the  Facilities  and  assets  or  systems  which  (i)  are
ordinarily  stored or located  off-Site  and (ii) are used to  service  multiple
facilities of Seller or its Affiliates),  including,  without limitation,  those
assets  described  below (but  excluding  the  Excluded  Assets)  (collectively,
"Purchased Assets"):

     (a) Except for the Excluded Parcels, the land described on Schedule 4.13(a)
(which land  comprises the Site),  together with all  buildings,  facilities and
other  improvements  thereon,  including the Facilities,  and all  appurtenances
thereto, including, without limitation, all related rights of ingress and egress
(collectively, the "Real Property");

     (b) All Spent Nuclear Fuel at the Site and all Inventories;

     (c) Except for property used in the ordinary  course of business to operate
the Transmission  Assets (but excluding  property used only  incidentally in the
operation of the  Transmission  Assets),  other items on Schedule 2.2(a) and the
Excluded Other Assets, all machinery, mobile or otherwise,  equipment (including
computer hardware and software and communications  equipment),  vehicles, tools,
spare parts,  fixtures,  furniture and furnishings  and other personal  property
used in the ordinary course of business to operate the Facilities (but excluding
such  items  used  only  incidentally  in  the  operation  of  the  Facilities),
including,  without  limitation,  the items of  personal  property  included  in
Schedule 4.13(b) (collectively, "Tangible Personal Property");

     (d) Subject to the provisions of Section  6.4(c),  all Seller's  Agreements
other than those identified on Schedules 2.2(k) or 2.2(m);

     (e) All Real Property  Agreements  other than those  identified on Schedule
2.2(k);

     (f) All Transferable Permits;

     (g)  All  books,  operating  records,  operating,  safety  and  maintenance
manuals, inspection reports, engineering design plans, documents, blueprints and

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<PAGE>

as built plans, specifications, procedures and similar items of Seller, wherever
located,  to the  extent  such  items  relate  to the  Facilities  and the other
Purchased  Assets (and  subject to the right of Seller to retain  copies of same
for its use) other than general ledger accounting  records,  minutes of meetings
of the Board of Directors and shareholders of Seller and other records having to
do with the corporate organization of Seller;

     (h) All Emission  Allowances and Emission  Reduction  Credits,  if any (but
only to the extent  necessary  to operate the  Purchased  Assets in the ordinary
course of business);

     (i) All  unexpired,  transferable  warranties  and  guarantees  from  third
parties  with  respect  to any  item  of  Real  Property  or  personal  property
constituting part of the Purchased Assets;

     (j) The name "Clinton Power Station" and any derivation thereof;

     (k)  All  drafts,   memoranda,   reports,   information,   technology   and
specifications to the extent relating to Seller's plans for Year 2000 Compliance
with respect to the Facilities  (subject to the right of Seller to retain copies
of same for its use);

     (l) Except as set forth in Section 2.2(n) or for the Intellectual  Property
described on Schedule 2.2(l), (i) all Intellectual  Property owned by Seller and
used in the ordinary course of business to operate the Purchased  Assets (or, in
common  with  Seller,  a  royalty-free,   non-exclusive   license  to  use  such
Intellectual  Property  at the Site),  and (ii) to the extent  transferrable,  a
non-assignable (except to Affiliates), royalty-free,  non-exclusive site license
to use the Intellectual Property described in Schedule 2.1(l);

     (m) The substation equipment set forth in Schedule A to the Interconnection
Agreement and designated therein as being transferred to Buyer;

     (n) The assets  comprising  the  Decommissioning  Funds  together  with all
related  accounting and other records  (subject to the right of Seller to retain
copies of same for its use), including, without limitation, records necessary to
determine the Tax Basis of each asset in the Decommissioning Funds;

     (o) All  rights  in and to any  causes  of action  against  third  parties
(including  indemnification  and contribution)  relating to any Real Property or
personal  property,   Permits,   Environmental  Permits,  Taxes,  Real  Property

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Agreements  or Seller's  Agreements,  if any,  including any claims for refunds,
prepayments,  offsets,  recoupment,  insurance  proceeds,  condemnation  awards,
judgments and the like,  whether  received as payment or credit  against  future
liabilities,  relating specifically to the Facilities or the Site, to the extent
such rights relate to the Assumed  Liabilities and Obligations  arising prior to
the Closing Date;

     (p) The right to proceeds from  insurance  policies to the extent  covering
Assumed Liabilities and Obligations; and

     (q) Any claims of Seller  related to the  Department  of Energy's  defaults
under the Standard Contract for Disposal of Spent Nuclear Fuel and/or High Level
Waste other than any claim  relating to Seller's  investment in the Private Fuel
Storage L.L.C. facility in Utah.

     2.2  Excluded  Assets.  Notwithstanding  anything  to the  contrary in this
Agreement,  nothing in this Agreement shall be construed as conferring on Buyer,
and Buyer is not acquiring,  any right, title or interest in or to the following
specific  assets which are associated with the Purchased  Assets,  but which are
hereby  specifically  excluded  from the sale and the  definition  of  Purchased
Assets herein (the "Excluded Assets"):

     (a) Except as expressly identified in Schedule 4.13(b) or Schedule A to the
Interconnection   Agreement,   the  electrical   transmission   or  distribution
facilities  (as opposed to  generation  facilities),  the gas  transmission  and
distribution  facilities (and all communication  facilities  related thereto) of
Seller  or any of its  Affiliates  located  at the Site or  forming  part of the
Facilities  (whether or not regarded as a "transmission"  or "generation"  asset
for regulatory or accounting  purposes),  including all  switchyard  facilities,
substation facilities and support equipment,  as well as all permits,  contracts
and warranties,  to the extent they relate to such transmission and distribution
assets  (collectively,  the  "Transmission  Assets"),  and those certain assets,
facilities and agreements identified in Schedule 2.2(a);

     (b) Certain switches and meters in the Facilities, gas facilities,  revenue
meters and remote  testing units,  drainage pipes and systems,  as identified in
the special warranty deed or the Easement Agreement;

     (c)  Certificates  of  deposit,   shares  of  stock,   securities,   bonds,
debentures,   evidences  of  indebtedness,  and  interests  in  joint  ventures,
partnerships, limited liability companies and other entities (including, without
limitation,  Seller's investment in the Private Fuel Storage L.L.C.  facility in
Utah), except the assets comprising the Decommissioning Funds;

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<PAGE>

     (d)  All  cash,  cash  equivalents,   bank  deposits,  accounts  and  notes
receivable  (trade or otherwise),  and any income,  sales,  payroll or other Tax
receivables, except the assets comprising the Decommissioning Funds;

     (e) All rights to  distributions,  credits  (including  shutdown  credits),
premium refunds or premium  returns based upon  activities  prior to the Closing
Date under any insurance policies of Seller, including,  without limitation, all
rights to (i) Seller's  member  insurance  accounts under its Nuclear  Insurance
Policies and (ii) Seller's  future  distributions,  credits,  refunds or returns
from its Nuclear Insurance Policies;

     (f) All claims for  refunds of  Department  of Energy  Decontamination  and
Decommissioning Fees paid by Seller prior to the Closing;

     (g) All tariffs, agreements and arrangements to which Seller is a party for
the purchase or sale of electric  capacity  and/or energy or for the purchase of
transmission or ancillary services;

     (h) Except as provided in Section 2.1(h), (i), (o), (p) and (q), the rights
of  Seller  in and to any  causes of action  against  third  parties  (including
indemnification  and  contribution)  relating  to any Real  Property or personal
property,  Permits,  Environmental  Permits,  Taxes, Real Property Agreements or
Seller's  Agreements,  including  without  limitation,  any claim  for  refunds,
prepayments,  offsets,  recoupment,  insurance  proceeds,  condemnation  awards,
judgments and the like,  whether  received as payment or credit  against  future
liabilities,  including,  without  limitation,  any claim  relating  to Seller's
investment in the Private Fuel Storage L.L.C. facility in Utah;

     (i) Any rights that accrue or will accrue to Seller  under this  Agreement,
the Ancillary  Agreements or the Interim Agreement,  the Management Agreement or
the Leased Employee Agreement;

     (j)  Any  and  all of  Seller's  rights  in any  contract  representing  an
intercompany  transaction between Seller and an Affiliate of Seller,  whether or
not such  transaction  relates to the provision of goods and  services,  payment
arrangements, intercompany charges or balances, or the like;

     (k) The Real Property Agreements set forth in Schedule 2.2(k);

     (l)  The  real  property   described  in  Schedule  2.2(l)  (the  "Excluded
Parcels");

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<PAGE>

     (m) The personal  property and other assets of Seller set forth in Schedule
2.2(m) (the "Excluded Other Assets");

     (n) The  rights of Seller  and its  Affiliates  to the name  "Illinova"  or
"Illinois  Power," or any related or similar  trade names,  trademarks,  service
marks, corporate names or logos, or any part, derivative or combination thereof;

     (o)  Subject  to Section  2.1(h),  all  Emission  Allowances  and  Emission
Reduction Credits, if any; and

     (p) Subject to Section 2.1(p),  all insurance policies of Seller related to
the Purchased  Assets,  including,  without  limitation,  all Nuclear  Insurance
Policies.

     2.3 Assumed  Liabilities and Obligations.  On the Closing Date, Buyer shall
deliver to Seller the  Assignment  and  Assumption  Agreement  pursuant to which
Buyer shall assume and agree to discharge in  accordance  with their  respective
terms, all of the following liabilities and obligations of Seller (collectively,
"Assumed Liabilities and Obligations"):

     (a) All  liabilities  and  obligations  of Seller  arising  (or  related to
periods)  on or after the Closing  Date under  Seller's  Agreements  (other than
those identified in Schedule 2.2(m)),  the Real Property  Agreements (other than
those identified in Schedule 2.2(k)) and the Transferable  Permits in accordance
with the  terms  thereof,  including,  without  limitation,  (i) the  contracts,
licenses,  agreements and personal  property  leases entered into by Seller with
respect to the Purchased Assets and disclosed on the relevant  schedule and (ii)
the contracts, licenses, agreements and personal property leases entered into by
Seller with respect to the  Purchased  Assets  after the date hereof  consistent
with  the  terms of this  Agreement,  except  in each  case to the  extent  such
liabilities and obligations,  but for a breach or default by Seller or a related
waiver or extension,  would have been paid, performed or otherwise discharged on
or prior to the  Closing  Date or to the  extent  the same arise out of any such
breach or default or related waiver or extension or out of any event which after
the giving of notice would constitute a default by Seller;

     (b) Except as provided in Sections  2.4(d),  2.4(g),  2.4(q) and 2.4(r) and
except for the Remediation work specifically  identified and required by Section
6.17  to be  performed  by or on  behalf  of  Seller,  any  liabilities,  claims
(including,   without   limitation,   third  party   claims),   obligations   or
responsibilities under or related to applicable Environmental Laws, Nuclear Laws
or  Environmental  Permits  with  respect to the  ownership  or operation of the
Purchased Assets, whether such liability,  obligation or responsibility is known
or unknown,  contingent or accrued,  and whether occurring prior to, on or after
the Closing Date;

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<PAGE>

     (c) All liabilities and obligations associated with the Purchased Assets in
respect of Taxes for which  Buyer is liable  pursuant  to Section  3.5 or 6.8(a)
hereof;

     (d)  All  liabilities  and  obligations  with  respect  to the  Transferred
Employees on and after the Closing  Date except for those  retained by Seller as
provided in Section 6.10;

     (e) With respect to the  Purchased  Assets,  any Tax that may be imposed by
any federal, state or local government on the ownership,  sale, operation or use
of the  Purchased  Assets on or after the  Closing  Date,  except for any Income
Taxes  attributable  to income  received  by  Seller;

     (f) All liabilities and  obligations of Seller for  Decommissioning  of the
Facilities,  except for Seller's  obligations to make the payments  specified in
Section 6.12;

     (g) All  liabilities  and  obligations  of Seller  to  dispose  of  Nuclear
Material located in, on or under the Site on or after the Closing Date;

     (h) Subject to Section 6.10, all liabilities  and  obligations  relating to
Buyer's hiring, discrimination in hiring, or unfair labor practices with respect
to the employees of CPS;

     (i) All liabilities and obligations of Seller set forth on Schedule 2.3(i);
and

     (j)  All  liabilities  or  obligations  for  (i)  any  insurance   premiums
(including  deferred premiums or retrospective  premium  adjustments)  under the
nuclear liability and property damage insurance policies which Buyer is required
to maintain pursuant to Section 6.15 hereof, and (ii) any retrospective  premium
adjustments  under  the  Price-Anderson   Act's  secondary  layer  of  financial
protection, in either case arising from events occurring on or after the Closing
Date.

     2.4 Excluded Liabilities.  Notwithstanding anything to the contrary in this
Agreement,  nothing in this Agreement shall be construed to impose on Buyer, and
Buyer shall not assume or be  obligated to pay,  perform or otherwise  discharge
the following liabilities or obligations (the "Excluded Liabilities"):

     (a) Any  liabilities  or  obligations  of Seller in respect of any Excluded
Assets or other assets of Seller which are not Purchased Assets;

     (b) Any liabilities or obligations in respect of Taxes  attributable to the
ownership, operation or use of Purchased Assets for taxable periods, or portions
thereof,  ending  before the Closing  Date,  except for Taxes for which Buyer is
liable pursuant to Sections 3.5 or 6.8(a) hereof;

                                      169
<PAGE>

     (c) Any liabilities or obligations of Seller accruing under any of Seller's
Agreements prior to the Closing Date;

     (d) All  liabilities  or obligations of Seller arising under or relating to
Nuclear Laws or relating to any claim by third  parties  based on common law, in
either case arising as a result of the off-Site  disposal,  treatment,  storage,
transportation  or  recycling  of Low Level  Waste  prior to the  Closing  Date,
including any and all asserted or unasserted liabilities or obligations to third
parties (including  employees) for property damage,  personal injury or tort, or
similar causes of action arising with respect thereto;

     (e) Any fines,  penalties or costs imposed by a Governmental Authority with
respect to the Purchased Assets resulting from (i) an investigation, proceeding,
request for  information  or inspection  before or by a  Governmental  Authority
relating to actions or omissions of Seller prior to the Closing Date, except for
liabilities  and  obligations  which have been  assumed by Buyer  under  Section
2.3(b), or (ii) criminal acts, willful misconduct or gross negligence of Seller;

     (f) Any  payment  obligations  of Seller for goods  delivered  or  services
rendered prior to the Closing Date,  including,  without  limitation,  rental or
lease payments pursuant to the Real Property  Agreements and any leases relating
to Tangible Personal Property;

     (g) Any  liability,  obligation  or  responsibility  under  or  related  to
Environmental  Laws or the common law,  whether such  liability,  obligation  or
responsibility  is known or  unknown,  contingent  or  accrued  (whether  or not
arising or made  manifest  before the  Closing  Date or on or after the  Closing
Date),  arising as a result of, in connection  with or allegedly  caused by, the
off-Site disposal, treatment, storage,  transportation or recycling of Hazardous
Substances (including any discharge or Release in connection therewith) prior to
the Closing Date in connection  with the ownership or operation of the Purchased
Assets;

     (h)  Except to the  extent  caused by Buyer or any of its  Affiliates,  any
liabilities,  obligations or  responsibilities to the extent relating to (i) the
property,  equipment or machinery  within the  switchyard  for which Seller will
retain an Easement,  (ii) the transmission lines delineated in the Easements, or
(iii) Seller's  operations on, or usage of, the  Easements,  including,  without
limitation, liabilities,  obligations or responsibilities arising as a result of
or in connection  with (A) any violation or alleged  violation of  Environmental
Law and (B) loss of life,  injury to  persons or  property  or damage to natural
resources;

     (i) Except as provided in Section  2.3(h),  any  liabilities or obligations
relating to personal injury or tort, discrimination,  wrongful discharge, unfair

                                      170
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labor  practice or similar claim or cause of action filed with or pending before
any court or  administrative  agency on the  Closing  Date with  respect  to the
Purchased  Assets or the  Transferred  Employees or where the material  facts of
such claim or cause of action occurred prior to the Closing Date;

     (j)  Except  as  provided  in  Section  2.3(b) or 2.3(i)  any  asserted  or
unasserted liabilities or obligations to third parties (including employees) for
personal  injury  or tort,  or  similar  causes  of  action  arising  out of the
ownership or operation of the Purchased Assets prior to the Closing Date;

     (k) Subject to Section 6.10, any liabilities or obligations relating to any
Benefit Plan  maintained by Seller,  or any employee  benefit plan as defined in
Section 3(3) of ERISA and  maintained  by any trade or business  (whether or not
incorporated)  which is or ever has been under  common  control,  or which is or
ever has been treated as a single employer,  with Seller under Section 414 (b) ,
(c) , (m) or (o) of the Code ("ERISA Affiliate") or to which Seller or any ERISA
Affiliate   contributed   (the   "ERISA   Affiliate   Plans"),   including   any
multi-employer plan contributed to at any time by Seller or any ERISA Affiliate,
or any  multi-employer  plan to which  Seller or any ERISA  Affiliate  is or was
obligated at any time to contribute,  including,  without  limitation,  any such
liability  (i)  relating  to benefits  payable  under any  Benefit  Plans,  (ii)
relating to the PBGC under Title IV of ERISA, (iii) relating to a multi-employer
plan,  (iv)  with  respect  to   noncompliance   with  the  notice  and  benefit
continuation  requirements of COBRA, (v) with respect to any noncompliance  with
ERISA or any other applicable laws, or (vi) with respect to any suit, proceeding
or claim which is brought against Buyer, any Benefit Plan, ERISA Affiliate Plan,
or any fiduciary or former fiduciary of any such Benefit Plan or ERISA Affiliate
Plan and the  basis of which is  related  to  actions  of  Seller  or its  ERISA
Affiliates  or which is otherwise  related to the  ownership or operation of the
Purchased Assets prior to the Closing Date;

     (l)  Subject  to  Section  6.10 and  Section  2.3(h),  any  liabilities  or
obligations  relating to the employment or termination of employment,  including
discrimination,  wrongful  discharge,  unfair labor  practices,  or constructive
termination  by  Seller  of  any  individual,  attributable  to any  actions  or
inactions  by Seller  prior to the  Closing  Date  other  than such  actions  or
inactions taken at the written request or with the written consent of Buyer;

     (m)  Subject  to  Section  6.10,  any  obligations  for  wages,   overtime,
employment Taxes,  severance pay, transition payments in respect of compensation
or similar  benefits or similar claims or causes of action arising or related to
facts or  performance  occurring  prior to the  Closing  Date  under any term or
provision of any contract,  plan, instrument or agreement relating to any of the
Purchased Assets;

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     (n) Any liability of Seller arising out of a breach by Seller or any of its
Affiliates  of any of its  obligations  under this  Agreement  or the  Ancillary
Agreements;

     (o) Any  obligation  of Seller to indemnify a Buyer  Indemnitee  under this
Agreement;

     (p) Any  liabilities  relating to the following  bonds  (collectively,  the
"Pollution Control Bonds") and any agreements relating thereto:  (i) $84,710,000
aggregate  principal  amount of Illinois  Development  Finance  Authority 7 3/8%
Pollution Control Refunding Revenue Bonds, 1991 Series A (Illinois Power Company
Project),  (ii) $84,150,000  aggregate principal amount of Illinois  Development
Finance Authority 7.40% Pollution Control Refunding Revenue Bonds, 1994 Series B
(Illinois Power Company Project),  (iii) $51,770,000  aggregate principal amount
of Illinois  Development  Finance  Authority  Adjustable Rate Pollution  Control
Revenue Refunding Bonds,  1993 Series A (Illinois Power Company  Project),  (iv)
$30,000,000 aggregate principal amount of Illinois Development Finance Authority
Adjustable  Rate  Pollution  Control  Revenue  Refunding  Bonds,  1993  Series B
(Illinois Power Company Project),  (v) $30,000,000 aggregate principal amount of
Illinois Development Finance Authority Adjustable Rate Pollution Control Revenue
Refunding  Bonds,  1993  Series  C  (Illinois  Power  Company   Project),   (vi)
$70,000,000 aggregate principal amount of Illinois Development Finance Authority
Adjustable  Rate  Pollution  Control  Revenue  Refunding  Bonds,  1997  Series A
(Illinois Power Company Project),  (vii) $45,000,000  aggregate principal amount
of Illinois  Development  Finance  Authority  Adjustable Rate Pollution  Control
Revenue Refunding Bonds, 1997 Series B (Illinois Power Company Project),  (viii)
$35,000,000 aggregate principal amount of Illinois Development Finance Authority
Adjustable  Rate  Pollution  Control  Revenue  Refunding  Bonds,  1997  Series C
(Illinois Power Company Project), (ix) $18,700,000 aggregate principal amount of
Illinois Development Finance Authority 5.40% Pollution Control Revenue Refunding
Bonds, 1998 Series A (Illinois Power Company Project), (x) $33,755,000 aggregate
principal  amount of Illinois  Development  Finance  Authority  5.40%  Pollution
Control Revenue Refunding Bonds, 1998 Series B (Illinois Power Company Project),
(xi)  $25,000,000  aggregate  principal amount of Illinois  Development  Finance
Authority Pollution Control Revenue Bonds, 1987 Series B (Illinois Power Company
Project)  (Adjustable   Convertible  Exchange  Securities),   (xii)  $25,000,000
aggregate  principal amount of Illinois  Development Finance Authority Pollution
Control  Revenue  Bonds,   1987  Series  C  (Illinois  Power  Company   Project)
(Adjustable  Convertible  Exchange  Securities),  (xiii)  $25,000,000  aggregate
principal amount of Illinois  Development  Finance  Authority  Pollution Control
Revenue  Bonds,  1987  Series D (Illinois  Power  Company  Project)  (Adjustable
Convertible  Exchange  Securities)  and (xiv)  $35,615,000  aggregate  principal
amount  of  Illinois  Development  Finance  Authority  5.70%  Pollution  Control
Refunding Revenue Bonds, 1994 Series A (Illinois Power Company Project);

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     (q) Any Environmental  Claim related to or any other liability,  obligation
or   responsibility   attributable  to  any   Environmental   Condition  at  the
Construction Waste Landfill, including any Remediation required by an order of a
Governmental  Authority under  Environmental Law; provided,  however that Seller
shall not have any liability,  obligation or responsibility  with respect to the
Construction  Waste Landfill to the extent arising from or  attributable  to the
acts of Buyer or its employees,  agents or  contractors  after the Closing Date,
other  than for acts  required  by an order of a  Governmental  Authority  under
Environmental Law;

     (r) Subject to Section 6.17, any  Remediation  work  identified on Schedule
6.17;

     (s)  All  liabilities  or  obligations  for  (i)  any  insurance   premiums
(including  deferred premiums or retrospective  premium  adjustments)  under the
Nuclear Insurance Policies, and (ii) any retrospective premium adjustments under
the Price-Anderson Act's secondary layer of financial protection, in either case
arising from events occurring prior to the Closing Date; and

     (t) Any other  liability or obligation of Seller not  specifically  assumed
hereunder.

     2.5 Control of Litigation.  The Parties agree and  acknowledge  that Seller
shall be  entitled  exclusively  to control,  defend and settle any  litigation,
administrative  or  regulatory  proceeding,   and  any  investigation  or  other
activities  arising  out of or related to any  Excluded  Liabilities,  and Buyer
agrees to cooperate with Seller (at Seller's  expense) in connection  therewith,
including, without limitation, providing access to any relevant real or personal
property and staff  transferred to Buyer pursuant to this Agreement,  so long as
such defense,  settlement or other activities do not unreasonably interfere with
Buyer's operation of the Facilities.


                                   ARTICLE III

                                   THE CLOSING

     3.1  Closing.  Upon  the  terms  and  subject  to the  satisfaction  of the
conditions  contained in Article VII of this  Agreement,  the sale,  assignment,
conveyance,  transfer and delivery of the Purchased Assets to Buyer, the payment
of the Cash Purchase Price to Seller, the assumption of the Assumed  Liabilities
and  Obligations  by  Buyer,  and  the  consummation  of  the  other  respective
obligations of the Parties  contemplated by this Agreement shall take place at a
closing (the "Closing") (except for obligations specifically contemplated hereby
to be completed after the Closing), to be held at the offices of Morgan, Lewis &
Bockius LLP, 1701 Market Street, Philadelphia, Pennsylvania, at 10:00 a.m. local
time, or another  mutually  acceptable  time and  location,  on the date that is

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fifteen  (15)  Business  Days  following  the  date  on  which  the  last of the
conditions  precedent to Closing set forth in Article VII of this Agreement have
been either  satisfied or waived by the Party for whose benefit such  conditions
precedent  exist but in any event not after the  Termination  Date,  unless  the
Parties  mutually  agree on another  date.  The date of  Closing is  hereinafter
called the "Closing Date." The Closing shall be effective for all purposes as of
12:01 a.m. on the Closing Date.

     3.2 Purchase Price; Payment. Upon the terms and subject to the satisfaction
of the conditions  contained in this  Agreement,  in  consideration  of Seller's
sale, assignment,  conveyance,  transfer and delivery of the Purchased Assets to
Buyer,  at the  Closing  Buyer  will (a) pay or cause  to be paid to  Seller  an
aggregate  amount of Twenty  Million  Dollars  ($20,000,000),  plus or minus any
adjustments pursuant to the provisions of Section 3.3 (as so adjusted, the "Cash
Purchase Price"), by wire transfer of immediately available funds denominated in
U.S.  dollars or by such other means as are agreed upon by Seller and Buyer, and
(b) assume the Assumed Liabilities and Obligations specified in Section 2.3 (the
sum of the Cash Purchase Price and the Assumed  Liabilities  and  Obligations is
referred to herein collectively as the "Purchase Price").

     3.3 Adjustment to Cash Purchase Price.  (a) Subject to Section  3.3(b),  at
the Closing, the Cash Purchase Price shall be adjusted, without duplication,  to
account for the items set forth in this Section 3.3(a):

     (i) The Cash  Purchase  Price  shall be  adjusted  to account for the items
prorated as of the Closing Date pursuant to Section 3.5.

     (ii) The Cash Purchase  Price shall be increased by the amount  expended by
Seller between the date hereof and the Closing Date for capital  additions to or
replacements of property,  plant and equipment  included in the Purchased Assets
and other  expenditures or repairs on property,  plant and equipment included in
the  Purchased  Assets that are  capitalized  by Seller in  accordance  with its
normal accounting  policies to the extent that Seller has not been reimbursed by
Buyer prior to the Closing for such expenditures by Seller;  provided, that such
expenditures  (A) are not  described in the capital  budgets  listed in Schedule
6.1, (B) are not required (1) for the  customary  operation and  maintenance  of
CPS, (2) to replace  equipment which has failed for any other reason,  or (3) to
comply  with  applicable  laws,  rules  and  regulations,   and  (C)  Buyer  has
specifically requested or approved such expenditures in writing. Nothing in this
paragraph  should be construed to limit Seller's  rights and obligations to make
all  capital  expenditures  necessary  to  comply  with NRC  licenses  and other
Permits.

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     (iii) xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxx

     (b) At least thirty (30) calendar  days prior to the Closing  Date,  Seller
shall  prepare  and  deliver  to  Buyer  an  estimated  closing  statement  (the
"Estimated  Closing  Statement")  that shall set forth Seller's best estimate of
all estimated  adjustments to the Cash Purchase Price required by Section 3.3(a)
(the "Estimated  Adjustment").  Within ten (10) calendar days after the delivery
of the Estimated Closing Statement by Seller to Buyer,  Buyer may object in good
faith to the Estimated  Adjustment in writing. If Buyer objects to the Estimated
Adjustment within such ten (10) day period, the Parties shall attempt to resolve
their  differences by  negotiation.  If the Parties are unable to do so prior to
the Closing Date (or if Buyer does not object to the Estimated Adjustment),  the
Cash Purchase Price shall be adjusted (the "Closing Adjustment") for the Closing
by the amount of the Estimated  Adjustment not in dispute.  The disputed portion
shall be resolved in accordance  with the  provisions of Section 3.3(c) and paid
as part of any Post-Closing Adjustment to the extent required by Section 3.3(c).

     (c) Within sixty (60) days after the Closing Date, Seller shall prepare and
deliver to Buyer a final closing statement (the  "Post-Closing  Statement") that
shall set forth all  adjustments  to the Cash Purchase Price required by Section
3.3(a)  not  previously  effected  by  the  Closing  Adjustment  (the  "Proposed
Post-Closing  Adjustment") and all work papers detailing such  adjustments.  The
Post-Closing  Statement shall be prepared using the same accounting  principles,
policies  and methods as Seller has  historically  used in  connection  with the
calculation of the items reflected on such Post-Closing Statement. Within thirty
(30) days after the delivery of the  Post-Closing  Statement by Seller to Buyer,
Buyer may object to the Proposed Post-Closing Adjustment in writing,  stating in
reasonable detail its objections thereto.  Seller agrees to cooperate with Buyer
to provide Buyer with the information used to prepare the Post-Closing Statement
and information relating thereto. If Buyer objects to the Proposed  Post-Closing
Adjustment, the Parties shall attempt to resolve such dispute by negotiation. If
the Parties are unable to resolve such dispute within thirty (30) days after any
objection by Buyer,  the Parties shall appoint the Independent  Accounting Firm,
which  shall,  at  Seller's  and  Buyer's  joint  expense,  review the  Proposed
Post-Closing  Adjustment  and determine the  appropriate  adjustment to the Cash
Purchase  Price,  if any,  within thirty (30) days after such  appointment.  The
Parties agree to cooperate with the  Independent  Accounting Firm and provide it
with  such  information  as it  reasonably  requests  to  enable it to make such
determination.  The finding of such Independent Accounting Firm shall be binding
on the Parties hereto.  Upon  determination  of the appropriate  adjustment (the
"Post-Closing   Adjustment")   by   agreement  of  the  Parties  or  by  binding
determination of the Independent Accounting Firm, the Party owing the difference
shall deliver such amount to the other Party no later than two (2) Business Days

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after such determination,  in immediately available funds or in any other manner
as reasonably requested by the payee.

     3.4  Allocation  of Purchase  Price.  Buyer and Seller  shall agree upon an
allocation  among the Purchased  Assets of the Purchase  Price  consistent  with
Section 1060 of the Code and the Treasury  Regulations  thereunder  within sixty
(60) days after the Closing  Date,  except to the extent any such  allocation is
required for the  calculation  of transfer  taxes to be paid at Closing in which
case Buyer and  Seller  shall  agree upon an  allocation  for  Purchased  Assets
subject to such transfer taxes at least ten (10) days prior to the Closing Date.
If Buyer and Seller cannot agree on any such  allocation,  such dispute shall be
resolved in accordance  with Section  6.8(d) of this  Agreement.  The allocation
required  by this  Section  3.4  shall  be  revised  based  on the  Post-Closing
Adjustment within one hundred and eighty (180) days after the Closing Date. Each
of Buyer and Seller agrees to file IRS Form 8594, and all federal,  state, local
and foreign Tax  Returns,  in  accordance  with any such  agreed  allocation  as
adjusted  as  provided  herein.  Each of  Buyer  and  Seller  shall  report  the
transactions  contemplated  by this  Agreement for federal Tax and all other Tax
purposes in a manner consistent with any such allocation  determined pursuant to
this Section 3.4. Each of Buyer and Seller agrees to provide the other  promptly
with any  information  required to complete  Form 8594.  Buyer and Seller  shall
notify and  provide  the other  with  reasonable  assistance  in the event of an
examination,  audit or other proceeding regarding any allocation of the Purchase
Price  determined  pursuant to this Section 3.4. Buyer and Seller shall not take
any position in any Tax Return,  Tax  proceeding  or audit that is  inconsistent
with such  allocation.  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

     3.5  Prorations.  (a) Buyer and Seller agree that all of the items normally
prorated,  including  those  listed  below  (but not  including  Income  Taxes),
relating to the business and operation of the Purchased Assets shall be prorated
as of the Closing  Date,  with Seller  liable to the extent such items relate to
any time period prior to the Closing  Date,  and Buyer liable to the extent such
items relate to periods  commencing  with the Closing Date (measured in the same
units used to compute  the item in  question,  otherwise  measured  by  calendar
days):

     (i) Personal  property,  real estate and occupancy  Taxes,  assessments and
other  charges,  if any, on or with respect to the business and operation of the
Purchased Assets;

     (ii) Rent, Taxes and all other items  (including  prepaid services or goods
not  included  in  Inventory)  payable  by or to Seller  under  any of  Seller's
Agreements assigned to Buyer pursuant to Section 2.1(d) hereof;

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     (iii) Any permit, license, registration, compliance assurance fees or other
fees with respect to any Transferable Permit;

     (iv) Sewer rents and charges for water,  telephone,  electricity  and other
utilities;

     (v) Rent and  Taxes  and  other  items  payable  by  Seller  under the Real
Property Agreements assigned to Buyer; and

     (vi)  Dues  and fees  payable  to  industry  organizations  under  Seller's
Agreements assumed by Buyer pursuant to Section 2.1(d) hereof.

     (b) In  connection  with the  prorations  referred to in (a) above,  in the
event that actual  figures are not available at the Closing Date,  the proration
shall be based  upon the  actual  Taxes or other  amounts  accrued  through  the
Closing Date or paid for the most recent year (or other appropriate  period) for
which actual Taxes or other amounts paid are  available.  Such prorated Taxes or
other  amounts shall be  re-prorated  and paid to the  appropriate  Party within
sixty  (60)  days of the date that the  previously  unavailable  actual  figures
become available.  The prorations shall be based on the number of days in a year
or other  appropriate  period (i) before the Closing Date and (ii) including and
after the Closing  Date.  Seller and Buyer agree to furnish each other with such
documents and other  records as may be reasonably  requested in order to confirm
all adjustment and proration calculations made pursuant to this Section 3.5.

     3.6 Deliveries by Seller. At the Closing,  Seller will deliver, or cause to
be delivered, the following to Buyer:

     (a) The Bill of Sale, duly executed by Seller;

     (b) Copies of any and all  governmental  and other  third  party  consents,
waivers or  approvals  obtained  by Seller with  respect to the  transfer of the
Purchased Assets,  or the consummation of the transactions  contemplated by this
Agreement;

     (c)  The  opinion  of  counsel,   officer's  certificate  and  other  items
contemplated by Section 7.1;

     (d) One or more  special  warranty  deeds  conveying  the Real  Property to
Buyer,  substantially  in the  form of  Exhibit  I  hereto,  duly  executed  and
acknowledged by Seller in recordable form, and any other customary  certificates
or other documents reasonably required by the title company;

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     (e) All Ancillary Agreements, duly executed by Seller;

     (f) A FIRPTA Affidavit, duly executed by Seller;

     (g) Copies, certified by the Secretary or Assistant Secretary of Seller, of
corporate  resolutions  authorizing the execution and delivery of this Agreement
and all of the agreements and instruments to be executed and delivered by Seller
in connection  herewith,  and the consummation of the transactions  contemplated
hereby;

     (h) A  certificate  of the  Secretary  or  Assistant  Secretary  of  Seller
identifying  the name and title and bearing the  signatures  of the  officers of
Seller authorized to execute and deliver this Agreement and the other agreements
and instruments to be executed and delivered by Seller in connection herewith;

     (i) A  certificate  of good  standing  with respect to Seller (dated within
three (3) Business Days of the Closing  Date),  issued by the Secretary of State
of the State of Illinois;

     (j) To the extent  available,  originals of the IBEW Collective  Bargaining
Agreements,  all Seller's Agreements,  Real Property Agreements and Transferable
Permits to be transferred to Buyer  hereunder,  and, if not available,  true and
correct copies  thereof,  together with any required  notices to and consents by
other  Persons  which are  parties to such  Seller's  Agreement,  Real  Property
Agreements and Transferable Permits;

     (k) The assets of the Decommissioning  Funds to be transferred  pursuant to
Section  6.12  shall  be  delivered  to  the  trustee  under  the   Post-Closing
Decommissioning Trust Agreement;

     (l) All such other  instruments  of  assignment,  transfer or conveyance as
shall,  in the  reasonable  opinion of Buyer and its  counsel,  be  necessary or
desirable to transfer to Buyer the Purchased  Assets,  in  accordance  with this
Agreement and where necessary or desirable in recordable form; and

     (m) Such other agreements, consents, documents, instruments and writings as
are required to be delivered by Seller at or prior to the Closing Date  pursuant
to this Agreement or otherwise reasonably required in connection herewith.

     3.7 Deliveries by Buyer. At the Closing, Buyer will deliver, or cause to be
delivered, the following to Seller:

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     (a) The Cash Purchase Price, as adjusted pursuant to Section 3.3;

     (b) The  opinions  of  counsel,  officer's  certificates  and  other  items
contemplated by Section 7.2;

     (c) All Ancillary Agreements, duly executed by Buyer;

     (d) Copies,  certified by the Secretary or Assistant Secretary of Buyer, of
resolutions authorizing the execution and delivery of this Agreement, and all of
the  agreements  and  instruments  to be  executed  and  delivered  by  Buyer in
connection  herewith,  and the  consummation  of the  transactions  contemplated
hereby;

     (e) A  certificate  of  the  Secretary  or  Assistant  Secretary  of  Buyer
identifying  the name and title and bearing the  signatures  of the  officers of
Buyer authorized to execute and deliver this Agreement, and the other agreements
to be executed and delivered by Buyer in connection herewith;

     (f) A  certificate  of good  standing  with respect to Buyer (dated  within
three (3) Business Days of the Closing  Date),  issued by the Secretary of State
of the State of Delaware;

     (g) All such other  instruments  of assumption as shall,  in the reasonable
opinion of Seller and its counsel,  be necessary for Buyer to assume the Assumed
Liabilities  and  Obligations  in  accordance  with  this  Agreement  and  where
necessary or desirable in recordable form;

     (h) Copies of any and all  governmental  and other  third  party  consents,
waivers or  approvals  obtained  by Buyer with  respect to the  transfer  of the
Purchased Assets,  or the consummation of the transactions  contemplated by this
Agreement;

     (i) Letters of assurance from PECO and British Energy plc in  substantially
the form of Exhibits L and M, respectively; and

     (j) Such other  agreements,  documents,  instruments  and  writings  as are
required to be delivered  by Buyer at or prior to the Closing  Date  pursuant to
this Agreement or otherwise reasonably required in connection herewith.

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                                   ARTICLE IV

                    REPRESENTATIONS AND WARRANTIES OF SELLER

Seller hereby represents and warrants to Buyer as follows:

     4.1  Organization;  Qualification.  Seller is a corporation duly organized,
validly  existing and in good  standing  under the laws of the State of Illinois
and has all requisite  corporate power and authority to own, lease,  and operate
its  properties and to carry on its business as is now being  conducted.  Seller
has heretofore delivered to Buyer complete and correct copies of its Articles of
Incorporation and Bylaws as currently in effect.

     4.2 Authority. Seller has full corporate power and authority to execute and
deliver this  Agreement and the Ancillary  Agreements to which it is a party and
to consummate the transactions  contemplated  hereby and thereby.  The execution
and delivery of this  Agreement  and the  Ancillary  Agreements to which it is a
party and the consummation of the transactions  contemplated  hereby and thereby
have been duly and validly authorized by all necessary corporate action required
on the part of Seller and no other  corporate  proceedings on the part of Seller
are necessary to authorize this Agreement and the Ancillary  Agreements to which
it is a party or to consummate the transactions contemplated hereby and thereby.
This Agreement has been duly and validly  executed and delivered by Seller,  and
assuming that this Agreement constitutes a valid and binding agreement of Buyer,
and  subject  to  the  receipt  of  Seller's  Required   Regulatory   Approvals,
constitutes  the legal,  valid and  binding  agreement  of  Seller,  enforceable
against  Seller in accordance  with its terms , except that such  enforceability
may be limited by applicable bankruptcy, insolvency, reorganization,  fraudulent
conveyance,  moratorium  or other  similar  laws  affecting  or  relating to the
enforcement  of  creditors  rights  generally  or general  principles  of equity
(regardless  of whether  enforcement  is considered in a proceeding at law or in
equity).

     4.3 Consents and Approvals; No Violation.

     (a) Except as set forth in Schedule  4.3(a),  and subject to the receipt of
Seller's Required  Regulatory  Approvals,  neither the execution and delivery by
Seller of this Agreement or the Ancillary  Agreements to which Seller is a party
nor the consummation of the transactions contemplated hereby or thereby will (i)
conflict  with or result in the  breach or  violation  of any  provision  of the
Articles of Incorporation or Bylaws of Seller, (ii) result in a default (or give
rise to any right of termination, cancellation or acceleration) under any of the
terms, conditions or provisions of any note, bond, mortgage, indenture, license,
agreement or other  instrument  or  obligation  to which Seller is a party or by
which Seller or any of the Purchased Assets are bound,  except for such defaults
(or rights of termination,  cancellation or  acceleration) as to which requisite

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waivers or consents  have been obtained or which would not,  individually  or in
the aggregate,  create a Material Adverse Effect, or (iii) constitute violations
of any order, writ, injunction,  decree,  statute, rule or regulation applicable
to Seller, or any of its assets,  except where such violations,  individually or
in the aggregate, would not create a Material Adverse Effect.

     (b) Except as set forth in  Schedule  4.3(b)  (the  filings  and  approvals
referred to in Schedule  4.3(b) are  collectively  referred to as the  "Seller's
Required Regulatory Approvals"), no declaration, filing or registration with, or
notice to, or authorization,  consent or approval of any Governmental  Authority
is necessary for the  consummation  by Seller of the  transactions  contemplated
hereby,  other  than (i) such  declarations,  filings,  registrations,  notices,
authorizations,  consents or approvals which, if not obtained or made, will not,
individually or in the aggregate,  create a Material Adverse Effect or (ii) such
declarations,  filings,  registrations,  notices,  authorizations,  consents  or
approvals  which  become  applicable  to  Seller  as a  result  of the  specific
regulatory status of Buyer (or any of its Affiliates) or the result of any other
facts that specifically  relate to the business or activities in which Buyer (or
any of its Affiliates) is or proposes to be engaged.

     4.4  Financial  Statements;  Reports.  Except as set forth in Schedule 4.4,
since January 1, 1996,  Seller has filed or caused to be filed with the SEC, the
applicable state or local utility  commissions or regulatory bodies, the NRC and
the FERC,  as the case may be,  all  material  forms,  statements,  reports  and
documents (including all exhibits,  amendments and supplements thereto) required
to be filed by Seller  with  respect to the  Purchased  Assets or the  operation
thereof under each of the Securities Act, the Exchange Act, the applicable state
public utility laws, the Federal Power Act, the Holding  Company Act, the Atomic
Energy Act, the Energy  Reorganization  Act and the  Price-Anderson  Act and the
respective  rules  and  regulations  thereunder,  all of which  complied  in all
material  respects with all applicable  requirements  of the appropriate act and
the rules and regulations  thereunder in effect on the date each such report was
filed,  and, to Seller's  Knowledge,  there were no  material  misstatements  or
omissions relating to the Purchased Assets as of the date of such filings in any
such report;  provided however, that Seller shall not be deemed to be making any
representation   or  warranty  to  Buyer  hereunder   concerning  the  financial
statements of Seller contained in any such reports.

     4.5  Undisclosed  Liabilities.  Except as set  forth in  Schedule  4.5,  to
Seller's  Knowledge,  the  Purchased  Assets  are not  subject  to any  material
liability or obligation  (whether  absolute,  accrued,  contingent or otherwise)
required to be accrued or reserved against in Seller's  financial  statements as
of the  most  recent  fiscal  quarter  in  accordance  with  generally  accepted

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accounting  principles  consistently  applied  and  that was not so  accrued  or
reserved against in Seller's financial statements for such fiscal quarter.

     4.6 Absence of Certain Changes or Events.  Since January 1, 1999, except as
set forth in Schedule 4.6, there has not been (a) any Material  Adverse  Effect,
or (b) any  damage,  destruction  or  casualty  loss,  whether or not covered by
insurance,  which, individually or in the aggregate,  created a Material Adverse
Effect.

     4.7 Title and  Related  Matters.  Except  for  Permitted  Encumbrances,  to
Seller's Knowledge,  Seller has good and marketable title,  insurable at regular
rates by a nationally  recognized title insurance company,  to the Real Property
to be  conveyed by it  hereunder  free and clear of all  Encumbrances.  The Real
Property  constitutes  all  of  the  real  property  necessary  to  operate  the
Facilities as currently operated. Except for Permitted Encumbrances, to Seller's
Knowledge,  Seller has good and valid title to each of the Purchased  Assets not
constituting Real Property free and clear of all Encumbrances.

     4.8 Real Property  Agreements.  Schedule 4.8 lists,  as of the date of this
Agreement,  all real property  leases,  easements,  licenses and other rights in
real property (collectively,  the "Real Property Agreements") to which Seller is
a party and which (a) are to be transferred and assigned to Buyer on the Closing
Date, (b) affect all or any part of any Real  Property,  and (c) (i) provide for
annual  payments of more than  $100,000 or (ii) are material to the ownership or
operation of the Purchased Assets. Except as set forth in Schedule 4.8, all such
Real Property  Agreements are valid,  binding and enforceable in accordance with
their terms,  and are in full force and effect;  there are no existing  material
defaults by Seller or, to Seller's Knowledge, any other party thereunder; and no
event has occurred which (whether with or without notice, lapse of time or both)
would  constitute a material  default by Seller or, to Seller's  Knowledge,  any
other party thereunder.

     4.9 Insurance.  All material policies of fire, liability,  property damage,
worker's  compensation  and other forms of insurance owned or held by Seller and
insuring the  Purchased  Assets are listed in Schedule 4.9 along with the amount
of the coverage,  the type of insurance,  and the policy renewal date. Except as
set forth in Schedule 4.9, to Seller's Knowledge,  all of such policies of fire,
liability,  worker's  compensation and other forms of insurance owned or held by
Seller and  insuring  the  Purchased  Assets are in full force and  effect,  all
premiums with respect thereto  covering all periods up to and including the date
as of which  this  representation  is being  made  have been  paid  (other  than
retrospective  premiums  which may be payable with respect to nuclear  liability
and property insurance  policies),  and no notice of cancellation or termination
has been  received  with  respect to any such policy  which was not  replaced on
substantially  similar terms prior to the date of such  cancellation.  Except as
described  in  Schedule  4.9,  as of the  date of this  Agreement,  to  Seller's

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Knowledge,  Seller  has not been  refused  any  insurance  with  respect  to the
Purchased Assets nor has Seller's  coverage with respect to the Purchased Assets
been  limited  by any  insurance  carrier to which it has  applied  for any such
insurance or with which it has carried insurance during the last twelve months.

     4.10  Environmental  Matters.  With respect to the Purchased Assets and the
ownership  or  operation  thereof by Seller,  to Seller's  Knowledge,  except as
disclosed in Schedule 4.10:

     (a) Seller has obtained and holds all material  Environmental  Permits used
in or  necessary  for the  ownership or  operation  of the  Purchased  Assets as
presently conducted;

     (b)  Seller is in  compliance  in all  material  respects  with all  terms,
conditions and provisions of (i) all applicable  Environmental Laws and (ii) all
material Environmental Permits;

     (c) there are no pending or threatened  Environmental Claims relating to or
with respect to the  Purchased  Assets,  and Seller is not aware of any facts or
circumstances  which  could  reasonably  be  expected  to form the basis for any
material Environmental Claim with respect to the Purchased Assets;

     (d) no Releases of Hazardous Substances have occurred at, from, in, to, on,
adjacent to or under the Site and no  Hazardous  Substances  are present in, on,
about or  migrating  to or from the Site  that  would  give  rise to a  material
liability of Seller  under  applicable  Environmental  Laws for  Remediation  of
Hazardous Substances, except for the Remediation contemplated by Section 6.17;

     (e) Seller has not  transported  or arranged  for the  treatment,  storage,
handling, disposal or transportation of any Hazardous Substance from the Site to
any off-Site location which is an Environmental Clean-up Site;

     (f) the Site is not a current or proposed Environmental Clean-up Site;

     (g) except for Permitted  Encumbrances,  there are no Encumbrances existing
under or pursuant to any  Environmental Law with respect to the Purchased Assets
and there are no facts,  circumstances,  or conditions that could  reasonably be
expected to result in a material  Encumbrance  under any  Environmental Law with
respect to the ownership, occupancy,  development, use or transferability of the
Purchased Assets;

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<PAGE>

     (h) there are not, at the Site (i) any underground storage tanks, active or
abandoned,   (ii)   polychlorinated-biphenyl-containing   equipment   or   (iii)
asbestos-containing  material, in any such case (i), (ii) or (iii) that requires
removal or Remediation under applicable Environmental Law;

     (i)  there  have been no  environmental  investigations,  studies,  audits,
tests, reviews or other analyses concerning the Purchased Assets conducted by or
on behalf of Seller,  or which are in the  possession  of Seller,  revealing any
violation of applicable Environmental Law or any Release of Hazardous Substances
that have not been made available to Buyer prior to execution of this Agreement;
and

     (j) there are no pending  claims by Seller  against  comprehensive  general
liability and excess insurance carriers for any Loss resulting from, relating to
or arising from Environmental Claims.

     4.11  Labor  Matters.  Seller  has  previously  delivered  to Buyer a true,
correct and complete copy of the IBEW Collective  Bargaining  Agreements,  which
are the only agreements with unionized  workers to which Seller is a party or is
subject and which relates to the Purchased Assets. With respect to the ownership
or operation  of the  Purchased  Assets,  to Seller's  Knowledge,  except to the
extent  set  forth  in  Schedule  4.11  (which  matters  shall  remain  the sole
responsibility of Seller):  (a) Seller is in compliance in all material respects
with all applicable laws respecting employment and employment  practices,  terms
and  conditions of employment  and wages and hours;  (b) Seller has not received
notice of any unfair labor practice  complaint pending before the National Labor
Relations  Board;  (c) there is no labor strike,  slowdown or stoppage  actually
pending or threatened  by any  authorized  representative  of any union or other
representative  of  employees  against or affecting  Seller;  (d) Seller has not
received  notice that any  representation  petition  respecting the employees of
Seller  has  been  filed  with  the  National  Labor  Relations  Board;  (e)  no
arbitration  proceeding arising out of or under collective bargaining agreements
is pending against  Seller;  and (f) Seller has not experienced any primary work
stoppage since at least December 31, 1995.

     4.12 ERISA; Benefit Plans.

     (a)  Schedule  4.12(a)  lists all  deferred  compensation,  profit-sharing,
retirement and pension plans,  and all material bonus and other employee benefit
or fringe benefit plans,  maintained or with respect to which  contributions are
made by  Seller  in  respect  of  employees  employed  at the  Purchased  Assets
("Benefit  Plans").  True, correct and complete copies of all such Benefit Plans
have been made available to Buyer.

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<PAGE>

     (b)  Except  as set  forth  in  Schedule  4.12(b),  Seller  and  any  ERISA
Affiliates have fulfilled their respective obligations under the minimum funding
requirements of Section 302 of ERISA and Section 412 of the Code with respect to
each  Benefit  Plan which is an "employee  pension  benefit  plan" as defined in
Section 3(2) of ERISA and to which Section 302 of ERISA  applies,  and each such
plan is in  compliance in all material  respects  with the presently  applicable
provisions of ERISA and the Code.  Except as set forth in Schedule  4.12(b),  to
Seller's  Knowledge,  neither  Seller nor any ERISA  Affiliate  has incurred any
liability  under  Sections  4062(b),  4063  or  4064  of  ERISA  to the  PBGC in
connection with any Benefit Plan which is subject to Title IV of ERISA,  nor any
withdrawal  liability to any  multiemployer  pension plan under  Section 4201 et
seq. of ERISA or to any multiemployer  welfare benefit plan, nor is there or has
there been any  reportable  event (as  defined in  Section  4043 of ERISA)  with
respect to any Benefit Plan except as set forth in Schedule  4.12(b).  Except as
set forth in Schedule 4.12(b), the IRS has issued a letter for each Benefit Plan
which is  intended  to be  qualified  determining  that such plan is exempt from
federal  Income  Tax under  Sections  401(a)  and  501(a) of the Code,  and,  to
Seller's  Knowledge,  there  has been no  occurrence  since the date of any such
determination  letter (including,  without  limitation,  statutory or regulatory
changes to the requirements of Section 401(a) of the Code for which the remedial
amendment  period has expired)  which has or will have  adversely  affected such
qualification.

     (c)  Neither  Seller  nor  any  ERISA  Affiliate  or  parent  or  successor
corporation  (within the meaning of Section 4069(b) of ERISA) has engaged in any
transaction  which may be disregarded  under Section 4069 or Section  4212(c) of
ERISA. Seller does not contribute to and has no liabilities or obligations under
any  multiemployer  plan  (within  the  meaning of Section  3(37) of ERISA).  No
Benefit Plan or ERISA Affiliate Plan is a multiemployer plan.

     (d)  Seller has  complied  in all  material  respects  with all  reporting,
disclosure,  notice,  election,  coverage  and  other  benefit  requirements  of
Sections  4980B and  9801-9833 of the Code and Sections  601-734 of ERISA as and
when applicable to any Benefit Plan.

     4.13 Real Property; Plant and Equipment.

     (a)  Schedule  4.13(a)  contains  a  legal  description  of,  and  exhibits
indicating  the location of, the Real  Property  owned by Seller and included in
the  Purchased  Assets.  All  Encumbrances  on the  Real  Property  (other  than
Permitted  Encumbrances)  shall be  released  on or  before  the  Closing  Date.
Complete and correct copies of any current surveys in Seller's possession or any
policies of title  insurance  currently in force and in the possession of Seller
with respect to the Real Property have  heretofore  been  delivered by Seller to
Buyer.  To  Seller's  knowledge,  there  are no  encroachments  onto,  overlaps,
boundary  line  disputes  or other  similar  matters  with  respect  to the Real

                                      185
<PAGE>

Property and no  improvements  included in the Real  Property  encroach upon any
adjacent property or any easement or right-of-way.

     (b)  Schedule  4.13(b)  contains  a  description  of  the  major  equipment
components and personal property comprising the Purchased Assets.

     4.14  Condemnation;  Public  Improvements.  Except as set forth in Schedule
4.14,  neither  the whole nor any part of the Real  Property  or any other  real
property or rights  leased,  used or occupied by Seller in  connection  with the
ownership or operation  of the  Purchased  Assets is subject to any pending suit
for condemnation or other taking by any Governmental Authority, and, to Seller's
Knowledge,  no such  condemnation  or  other  taking  has  been  threatened.  No
assessment for public  improvements  has been served upon Seller with respect to
the Real Property which remains unpaid, including, without limitation, those for
construction of sewer, water,  electric,  gas or steam lines and mains, streets,
sidewalks  and  curbing.  To Seller's  Knowledge,  there are no required  public
improvements  with respect to the Real  Property  that have not been  completed,
assessed and paid for prior to the date hereof.

     4.15 Certain Contracts and Arrangements.

     (a) Except (i) as listed in Schedule 4.15(a) or the other schedules to this
Agreement  (all such  agreements  being  collectively  referred to herein as the
"Seller's  Agreements")  or (ii) for contracts,  agreements,  personal  property
leases,  commitments,  understandings or instruments in which all obligations of
Seller  will  expire  prior to the  Closing  Date,  Seller is not a party to any
written contract, agreement, personal property lease, commitment,  understanding
or  instrument  which is material to the ownership or operation of the Purchased
Assets.

     (b) Except as disclosed in Schedule  4.15(b),  each of Seller's  Agreements
(i)  constitutes  the legal,  valid and binding  obligation  of Seller,  and, to
Seller's  Knowledge,  constitutes the legal, valid and binding obligation of the
other parties thereto, (ii) to Seller's Knowledge,  is in full force and effect,
and (iii) to Seller's Knowledge,  may be transferred or assigned to Buyer at the
Closing without consent or approval of the other parties  thereto,  in each case
without breaching the terms thereof or resulting in the forfeiture or impairment
of any material rights thereunder.

(c)  Except  as set  forth  in  Schedule  4.15(c),  there  is not,  to  Seller's
Knowledge,  any  default or event  which,  with notice or lapse of time or both,
would  constitute  a default  on the part of Seller or any of the other  parties
thereto,  except such events of default and other  events as to which  requisite

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waivers or consents  have been obtained or which would not,  individually  or in
the aggregate, create a Material Adverse Effect.

     4.16 Legal Proceedings, etc. Except as set forth in Schedule 4.16 or in any
filing made by Seller or any of its Affiliates  pursuant to the Securities  Act,
the Exchange Act, the Nuclear Waste  Policy Act or the Atomic Energy Act,  there
are no claims, actions,  proceedings or investigations  concerning the Purchased
Assets  pending or, to  Seller's  Knowledge,  threatened  against or relating to
Seller before any Governmental  Authority or body which,  individually or in the
aggregate,  could  reasonably  be  expected to have a Material  Adverse  Effect.
Except as set forth in  Schedule  4.16 or in any filing made by Seller or any of
its  Affiliates  pursuant to the  Securities  Act, the Exchange Act, the Nuclear
Waste  Policy  Act or the  Atomic  Energy  Act,  Seller  is not  subject  to any
outstanding   judgment,   rule,  order,  writ,   injunction  or  decree  of  any
Governmental Authority with respect to the Purchased Assets which,  individually
or in the  aggregate,  could  reasonably be expected to have a Material  Adverse
Effect.

     4.17 Permits; Compliance with Law.

     (a)  Seller  has all  material  permits,  licenses,  franchises  and  other
governmental authorizations,  consents and approvals, other than with respect to
permits under  Environmental  Laws referred to in Section 4.10 hereof or permits
issued by the NRC referred to in Section 4.18 hereof (collectively,  "Permits"),
used in or necessary for the ownership and operation of the Purchased  Assets as
presently  conducted.  Except as set forth in Schedule  4.17(a),  Seller has not
received any written  notification  that it is in violation of any such Permits,
or any law,  statute,  order,  rule,  regulation,  ordinance  or judgment of any
Governmental   Authority   applicable  to  the  Purchased  Assets,   except  for
notifications of violations  which would not,  individually or in the aggregate,
have a Material  Adverse  Effect.  Except  with  respect to  Environmental  Laws
referred to in Section 4.10 and NRC matters referred to in Section 4.18,  Seller
is in compliance with all Permits, laws, statutes,  orders, rules,  regulations,
ordinances  or  judgments  of  any  Governmental  Authority  applicable  to  the
Purchased Assets,  except for violations which would not, individually or in the
aggregate, have a Material Adverse Effect.

     (b)  Schedule  4.17(b) sets forth all  material  Permits and  Environmental
Permits  other  than  Transferable  Permits  (which  are set  forth in  Schedule
1.1(156) applicable to the Purchased Assets.


     4.18 NRC Licenses.

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     (a) Seller has all  material  permits,  licenses,  and other  consents  and
approvals issued by the NRC necessary to own and operate the Purchased Assets as
presently operated,  pursuant to the requirements of all Nuclear Laws. Except as
set forth in Schedule 4.18(a),  Seller has not received any written notification
since the CPS  shutdown in September  1996,  that it is in violation of any such
licenses,  or any order, rule, regulation or decision of the NRC with respect to
the Purchased  Assets,  except for  notifications of violations which would not,
individually or in the aggregate,  have a Material Adverse Effect.  Seller is in
compliance with all Nuclear Laws and all orders, rules, regulations or decisions
of the NRC applicable to Seller with respect to the Purchased Assets, except for
violations  which would not,  individually or in the aggregate,  have a Material
Adverse Effect.

     (b) Schedule 4.18(b) sets forth all material permits,  licenses,  and other
consents and approvals issued by the NRC applicable to the Purchased Assets.

     4.19 Regulation as a Utility.  Seller is an electric utility company within
the meaning of the Holding  Company Act, a public  utility within the meaning of
the  Federal  Power Act and an  electric  utility  within the meaning of the NRC
regulations  implementing the Atomic Energy Act. Except as set forth in Schedule
4.19 or with respect to local tax, zoning laws and municipal franchises,  Seller
is not,  specifically as a result of its ownership or operation of the Purchased
Assets,  subject to regulation as a public utility or public service company (or
similar  designation) by the United States,  any state of the United States, any
foreign  country  or  any  municipality  or  any  political  subdivision  of the
foregoing.

     4.20  Taxes.  Except as set forth in  Schedule  4.20,  with  respect to the
Purchased  Assets (a) all Tax  Returns  required to be filed have been filed and
(b) all  material  Taxes shown to be due on such Tax  Returns  have been paid in
full.  Except  as set  forth in  Schedule  4.20,  no  notice  of  deficiency  or
assessment  has  been  received  from  any  taxing  authority  with  respect  to
liabilities for Taxes of Seller in respect of the Purchased  Assets,  which have
not been fully paid or finally  settled,  and any such deficiency  shown in such
Schedule 4.20 is being contested in good faith through appropriate  proceedings.
Except as set forth in Schedule  4.20,  there are no  outstanding  agreements or
waivers  extending the  applicable  statutory  periods of  limitation  for Taxes
associated  with the Purchased  Assets for any period.  Schedule 4.20 sets forth
the taxing  jurisdictions in which Seller owns assets or conducts  business that
require a notification to a taxing authority of the transactions contemplated by
this  Agreement,  if the  failure  to make  such  notification,  or  obtain  Tax
clearances in connection  therewith,  would either require Buyer to withhold any
portion of the Purchase  Price or would  subject  Buyer to any liability for any
Taxes of Seller.

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     4.21 Year  2000  Compliance.  Seller  has made  available  to Buyer its Y2K
Program Manual (the "Y2K Plan"),  which  complies in all material  respects with
the standards set forth in Nuclear Utility Year 2000 Readiness, NEI/NUSMG 97-07.
Subject  to the  timely  completion  of the work  described  in the Y2K Plan and
except as set forth in Schedule 4.21, all of the computer hardware, software and
firmware  products   (including   embedded   microcontrollers   in  non-computer
equipment),  interfaces with internal and external systems, and computer systems
(including all  constituent  programs,  processors,  controllers,  applications,
routines,  modules, processes, tools and other components) which are included in
the Purchased  Assets and are  identified as "mission  critical" in the Y2K Plan
(collectively, the "Year 2000 Assets") will be Year 2000 Qualified. For purposes
of this  Agreement,  "Year 2000  Qualified"  means that all Year 2000 Assets are
either "Year 2000  Compliant" or "Year 2000 Ready" as defined in NEI/NUSMG 97-07
and as  restated  below.  Notwithstanding  the  foregoing  definitions,  an item
required to be Year 2000  Qualified that does not satisfy the definition of Year
2000 Compliant shall only be considered Year 2000 Ready (and  consequently  Year
2000  Qualified)  if (a) the item  maintains  its function as it crosses any key
date  even if there  may be date  errors  or some  form of  compensatory  action
required  to  maintain  valid  functional  operation;  (b) a  deficiency  can be
addressed by pre-defined  manual action;  and (c) the  integration of all manual
actions  required are  confirmed to be reasonably  within the  capability of the
facility  resources and can be accomplished  without any risk of loss, damage or
destruction to facility equipment or the operation of the Facilities or material
loss of time.  As used herein (and as defined in  NEI/NUSMG  97-07) (x) the term
"Year 2000 Compliant" means Year 2000 Assets that accurately  process  date/time
data (including,  without limitation,  calculating,  comparing,  and sequencing)
from, into and between the twentieth and twenty-first centuries,  the years 1999
and 2000, and leap years (including accurate leap-year calculations) and (y) the
term "Year 2000 Ready"  means a Year 2000 Asset that has been  determined  to be
suitable for continued use into the year 2000 even though the Year 2000 Asset is
not fully Year 2000  Compliant.  For purposes of this Section 4.21,  "key dates"
include, without limitation, the following:  12/31/99, 1/1/00, 2/28/00, 2/29/00,
3/1/00, 12/31/00, 1/1/01, 2/28/01, 3/1/01, 2/28/04, 2/29/04 and 3/1/04.

     4.22. Qualified Decommissioning Fund.

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EXCEPT FOR THE  REPRESENTATIONS AND WARRANTIES SET FORTH IN THIS ARTICLE IV, THE
PURCHASED ASSETS ARE BEING SOLD AND TRANSFERRED "AS IS, WHERE IS," AND SELLER IS
NOT MAKING ANY OTHER REPRESENTATIONS OR WARRANTIES,  WRITTEN OR ORAL, STATUTORY,
EXPRESS  OR  IMPLIED,  CONCERNING  SUCH  PURCHASED  ASSETS,  INCLUDING,  WITHOUT
LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
OTHER  IMPLIED  WARRANTY,  ALL  OF  WHICH  ARE  HEREBY  EXPRESSLY  EXCLUDED  AND
DISCLAIMED.


                                    ARTICLE V

                     REPRESENTATIONS AND WARRANTIES OF BUYER
     Buyer represents and warrants to Seller as follows:

     5.1 Organization. Buyer is a limited liability company duly formed, validly
existing  and in good  standing  under the laws of the State of Delaware and has
all  requisite  corporate  power and  authority  to own,  lease and  operate its

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properties  and to carry on its  business as is now being  conducted.  Buyer has
heretofore delivered to Seller complete and correct copies of its Certificate of
Formation and Operating  Agreement (or other similar  governing  documents),  as
currently in effect.

     5.2 Authority. Buyer has full organizational power and authority to execute
and deliver this  Agreement and the Ancillary  Agreements  and to consummate the
transactions contemplated hereby and thereby. The execution and delivery of this
Agreement and the Ancillary  Agreements and the consummation of the transactions
contemplated  hereby and thereby  have been duly and validly  authorized  by all
necessary  corporate action required on the part of Buyer and no other corporate
proceedings  on the part of Buyer are necessary to authorize  this Agreement and
the Ancillary  Agreements or to consummate the transactions  contemplated hereby
and thereby.  This Agreement has been duly and validly executed and delivered by
Buyer,  and  assuming  that  this  Agreement  constitutes  a valid  and  binding
agreement of Seller,  and subject to the receipt of Buyer's Required  Regulatory
Approvals,  constitutes  a valid and  binding  agreement  of Buyer,  enforceable
against Buyer in accordance with its terms.

     5.3 Consents and Approvals; No Violation.

     (a) Except as set forth in Schedule  5.3(a),  and subject to the receipt of
Buyer's  Required  Regulatory  Approvals,  neither the execution and delivery by
Buyer of this  Agreement and the Ancillary  Agreements nor the purchase by Buyer
of the Purchased  Assets  pursuant to this  Agreement  will (i) conflict with or
result  in any  breach of any  provision  of the  Certificate  of  Formation  or
Operating  Agreement  (or other  similar  governing  documents)  of Buyer,  (ii)
require any  consent,  approval,  authorization  or permit of, or filing with or
notification to, any Governmental Authority,  (iii) result in a default (or give
rise to any right of termination, cancellation or acceleration) under any of the
terms,  conditions  or  provisions  of  any  note,  bond,  mortgage,  indenture,
agreement,  lease or other instrument or obligation to which Buyer is a party or
by which any of its assets may be bound,  except for such defaults (or rights of
termination,  cancellation or  acceleration)  as to which  requisite  waivers or
consents  have  been  obtained  or  which  would  not,  individually  or in  the
aggregate, have a material adverse effect on the ability of Buyer to perform its
obligations  hereunder  ("Buyer Material Adverse  Effect"),  or (iv) violate any
law,  regulation,   order,   judgment  or  decree  applicable  to  Buyer,  which
violations,  individually  or in the  aggregate,  would create a Buyer  Material
Adverse Effect.

     (b) Except as set forth in  Schedule  5.3(b)  (the  filings  and  approvals
referred to such Schedule are collectively  referred to as the "Buyer's Required
Regulatory Approvals"),  no declaration,  filing or registration with, or notice

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<PAGE>

to, or  authorization,  consent or approval  of any  Governmental  Authority  is
necessary for the consummation by Buyer of the transactions contemplated hereby.

     5.4  Availability of Funds.  Buyer has sufficient  funds available to it or
has  received  binding  written   commitments  from  third  parties  to  provide
sufficient  funds  to  enable  Buyer  on the  Closing  Date to (i) pay the  Cash
Purchase Price as adjusted by Section 3.3 on the Closing Date,  (ii) satisfy NRC
financial  qualifications  requirements contained in 10 C.F.R. section 50.33(f),
(iii) guarantee payment of deferred premiums of $10 million annually pursuant to
10 C.F.R.  section 140.21,  and (iv) perform all of its  obligations  under this
Agreement and the Ancillary Agreements.

     5.5 Legal  Proceedings.  There are no  domestic or  international  actions,
suits or  proceedings  pending  against  Buyer or its members  before any court,
arbitrator or Governmental  Authority  which,  individually or in the aggregate,
could have a Buyer  Material  Adverse  Effect.  Neither Buyer nor its members is
subject to any  outstanding  judgments,  rules,  orders,  writs,  injunctions or
decrees of any court,  arbitrator or Governmental Authority which,  individually
or in the aggregate, have a Buyer Material Adverse Effect.

     5.6 WARN Act. Buyer does not intend with respect to the Purchased Assets to
engage in a "plant  closing" or "mass  layoff," as such terms are defined in the
WARN Act within sixty (60) days after the Closing Date.

     5.7  Regulation  as a  Utility.  As of the date  hereof,  Buyer is a public
utility  company  within  the  meaning  of the  Federal  Power Act and may be an
electric  utility within the meaning of NRC regulations  implementing the Atomic
Energy Act.  Except as set forth on Schedule  5.7, or with  respect to local tax
and zoning  laws,  Buyer is not  subject to  regulation  as a public  utility or
public  services  company by the United States,  any State of the United States,
any foreign  country,  or any  municipality or any political  subdivision of the
foregoing.

     5.8  Qualified  Buyer.  To Buyer's  Knowledge,  nothing has come to Buyer's
attention that would indicate that Buyer is not legally  qualified,  or will not
be legally  qualified  as of the Closing  Date,  to obtain all Buyer's  Required
Regulatory Approvals in a timely manner.

     5.9 Limited  Liability Company  Agreement.  Buyer has delivered to Seller a
true and complete copy of the Limited  Liability  Company Agreement between PECO
and British  Energy,  Inc., and all amendments  thereto in effect on the date of
this Agreement.

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<PAGE>

                                    ARTICLE VI

                            COVENANTS OF THE PARTIES

     6.1 Conduct of Business Relating to the Purchased Assets

     (a) Except as required by law, any Governmental Authority or the Management
Agreement,  or as described  in Schedule  6.1 or to the extent  Buyer  otherwise
consents in writing,  during the period from the date of this  Agreement  to the
Closing  Date,  Seller (i) shall  operate the  Purchased  Assets in the ordinary
course  consistent  with Good  Utility  Practices,  (ii) shall use  Commercially
Reasonable  Efforts to preserve  intact the  Purchased  Assets and  preserve the
goodwill and relationships with customers,  suppliers and others having business
dealings with Seller with respect to the Purchased Assets,  (iii) shall maintain
the insurance  coverage  described in Section 4.9 or other insurance  reasonably
equivalent  thereto,  (iv)  shall  comply  in all  material  respects  with  all
applicable  laws,  rules  and  regulations  relating  to the  Purchased  Assets,
including,  without limitation, all Nuclear Laws and Environmental Laws, and (v)
shall  continue to implement in  accordance  with Good Utility  Practices and in
conformity with all applicable  legal  requirements  Seller's Y2K Plan.  Without
limiting the generality of the foregoing,  and,  except as  contemplated in this
Agreement or the  Management  Agreement,  or as described in Schedule 6.1, or as
required under  applicable law or by any  Governmental  Authority,  prior to the
Closing Date,  without the prior written consent of Buyer,  Seller will not with
respect to the Purchased Assets:

     (i) make any material  change in the levels of fuel  inventory  customarily
maintained  by Seller  with  respect  to the  Purchased  Assets  other  than the
scheduled November 1999 fuel purchase;

     (ii) except for Permitted  Encumbrances,  sell, lease (as lessor),  pledge,
encumber,  restrict,  transfer or otherwise  dispose of, or grant any right with
respect  to, (A) any Real  Property,  or (B) any of the other  Purchased  Assets
other than assets used,  consumed or replaced in the operation of the Facilities
in the ordinary course of business consistent with Good Utility Practices;

     (iii) modify,  amend or voluntarily  terminate prior to the expiration date
thereof any of Seller's  Agreements,  and leases  listed in Schedule 4.8 (or any
other lease to the extent any such extension or amendment  thereof would require
the  lease  to  be  disclosed  in  Schedule  4.8)  or  any  material  Permit  or
Environmental  Permit or waive any default by, or release,  settle or compromise
any claim  against,  any other  party  thereto,  other than (A) in the  ordinary
course of business,  to the extent consistent with Good Utility  Practices,  (B)
with cause, to the extent  consistent with Good Utility  Practices or (C) as may

                                      195
<PAGE>

be  required  in  connection  with  Seller's  obligations  to Buyer  under  this
Agreement;

     (iv) enter into any  commitment  for the  purchase or sale of nuclear  fuel
having a term that extends beyond December 31, 1999, or such other date that the
Parties mutually agree to be the date on which the Closing is expected to occur;

     (v) enter into any power sales agreement with respect to CPS that obligates
or encumbers the  Facilities  for a term that extends  beyond  December 31, 1999
(other than with respect to the CPS switchyard so long as there is no impairment
of Buyer's access to Seller's  Transmission system), or such other date that the
Parties mutually agree to be the date on which the Closing is expected to occur;
provided,  however,  that  Seller  shall be  entitled  to enter into power sales
agreements  involving  power to be purchased by Seller under the Power  Purchase
Agreement  or  terminable  by Seller (or after the Closing Date by Buyer) on not
more than ten (10) days notice without further liability,  or that do not relate
to the Purchased Assets;

     (vi) amend in any  material  respect or cancel any  liability  or  casualty
insurance  policies  related  thereto,  or  fail to  maintain  the  policies  of
insurance  required  by Section  4.9 or other  insurance  reasonably  equivalent
thereto with financially responsible insurance companies;

     (vii)  enter into any  commitment  or contract  for goods or  services  not
addressed  in clauses (i) through  (vi) above that will be delivered or provided
after December 31, 1999 or such other date that the Parties mutually agree to be
the date on which the Closing is expected to occur that exceeds  $250,000 in the
aggregate,  unless such commitment or contract is terminable by Seller (or after
the Closing Date by Buyer) without further  liability,  upon not more than sixty
(60) days notice;

     (viii)  except as required by the terms of the IBEW  Collective  Bargaining
Agreements  or  regulatory  requirements  (A) other  than  consistent  with past
practice,  increase  salaries or wages of employees  employed in connection with
the Purchased  Assets prior to Closing,  (B) take any action prior to Closing to
effect a material change in the IBEW Collective  Bargaining  Agreements or enter
into any other collective bargaining or representation  agreement for employees,
or (C) take any action prior to the Closing to increase materially the aggregate
benefits payable to employees; or

     (ix) enter into any agreement or settlement with any Governmental Authority
relating to or regarding the tax status of the Purchased  Assets for any taxable
period ending after December 31, 1999;

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<PAGE>

     (x) amend or modify  Seller's  Decommissioning  Trust  Agreement  except as
contemplated by this Agreement,  provided,  however,  that Buyer's consent shall
not be unreasonably withheld; or

     (xi) enter into any  written or oral  contract,  agreement,  commitment  or
arrangement  with respect to any of the  transactions set forth in the foregoing
paragraphs (i) through (x).

     Notwithstanding  the provisions of this Section 6.1(a),  Buyer acknowledges
and agrees that Seller shall not be  responsible  for any breach of this Section
6.1(a) if such breach  directly arises out of or results from the performance of
services, or any breach by, PECO under the Management Agreement.

     (b) A committee comprised of one or more senior representatives  designated
by  Seller  and one or more  senior  representatives  designated  by Buyer  (the
"Transition  Committee")  will be established  as soon as practicable  after the
execution  of this  Agreement  to permit  Buyer to observe the  operation of the
Purchased Assets and to facilitate the transfer of the Purchased Assets to Buyer
at the Closing.  The Transition  Committee will be kept fully apprised by Seller
of all  material CPS  management  and  operating  developments.  The  Transition
Committee  shall have regular  access to the  management  and Nuclear  Oversight
Committee of the Board of Directors of Seller (including any management  reports
on CPS  operations  given  to the  Board).  The  Transition  Committee  shall be
accountable  directly to the respective  chief  executive  officers of Buyer and
Seller and shall from time to time report its findings to the senior  management
of each of Seller and Buyer. The Transition Committee shall have no authority to
take any action inconsistent with Seller's control of NRC licensed activities or
to enter into a legally binding agreement to bind Seller or Buyer.

     (c)  Between  the  date of this  Agreement  and the  Closing  Date,  in the
interest of cooperation  between Seller and Buyer and to permit  informed action
by Buyer regarding its rights pursuant to Section 6.1(a), the Parties agree that
at the sole  responsibility and expense of Buyer, and subject to compliance with
all applicable NRC rules and regulations  and other  applicable law, Seller will
permit a reasonable  number of designated  employees  ("Observers")  of Buyer to
observe all operations of Seller that relate to the Purchased  Assets,  and such
observation  will  be  permitted  on a  cooperative  basis  in the  presence  of
personnel of Seller but not  restricted to the normal  business hours of Seller;
provided,  however,  that  such  Observers  shall  abide  by all NRC  rules  and
regulations  with respect to the Site and their actions shall not interfere with
the operation of CPS.  Buyer's  Observers  may  recommend or suggest  actions be
taken or not be taken by Seller; provided, however, that Seller will be under no
obligation to follow any such recommendations or suggestions and Seller shall be
entitled,  subject to this Agreement, to conduct its business in accordance with
its own judgment and  discretion.  Buyer's  Observers shall have no authority to

                                      197
<PAGE>

bind or make agreements on behalf of Seller; to conduct discussions with or make
representations  to third parties on behalf of Seller; or to issue  instructions
to or direct or exercise  authority  over  Seller or any of  Seller's  officers,
employees,  advisors  or agents.  Buyer shall be  responsible  for any breach by
Buyer's Observers of this Section 6.1(c).

     (d) Seller shall advise Buyer  regarding  implementation  of changes in ICC
rules or procedures of which Seller has Knowledge which are reasonably likely to
have a Material Adverse Effect on CPS.

     (e)  Nothing  in this  Section  6.1 is  intended  to  amend or  modify  the
respective duties,  liabilities and obligations of the Parties under the Interim
Agreement, the Management Agreement and Leased Employee Agreement.

     6.2 Access to Information.

     (a) In addition to the rights  granted by  Sections  6.1 (b),  (c) and (d),
between the date of this  Agreement  and the Closing Date,  Seller will,  during
ordinary  business  hours and upon  reasonable  notice and subject to compliance
with all applicable NRC rules and regulations and other  applicable law (i) give
Buyer and  Buyer's  Representatives  reasonable  access to all  books,  records,
plants,  offices and other facilities and properties  constituting the Purchased
Assets;  (ii) make  available  copies of all  insurance  policies  covering  the
Purchased  Assets and the Assumed  Liabilities  and  Obligations;  (iii) furnish
Buyer with such financial and operating data and other  information with respect
to the Purchased Assets as Buyer may from time to time reasonably  request;  and
(iv) make available to Buyer a copy of each material  report,  schedule or other
document  filed or received by Seller with respect to the Purchased  Assets with
the SEC, NRC, FERC, ICC or any other Governmental  Authority having jurisdiction
over the Purchased Assets; provided, however, that (A) any such inspection shall
be  conducted  in  such a  manner  as not to  interfere  unreasonably  with  the
operation of the Purchased Assets,  (B) Seller shall not be required to take any
action which would constitute a waiver of the attorney-client  privilege and (C)
Seller  need not  supply  Buyer  with any  information  that  Seller is  legally
prohibited  from  supplying.  Seller  will  provide  Buyer  with  access  to the
Transferred Employee Records, but Seller shall not be required to provide access
to other  employee  records or medical  information  unless  required  by law or
specifically authorized by the affected employee.

     (b) Buyer and  Seller  acknowledge  that all  information  furnished  to or
obtained by Buyer or Buyer's Representatives  pursuant to this Section 6.2 shall

                                      198
<PAGE>

be subject  to the  provisions  of the  Confidentiality  Agreement  and shall be
treated  as  "Proprietary   Information"  (as  defined  in  the  Confidentiality
Agreement).

     (c) For a period of seven (7) years after the  Closing  Date and subject to
all  applicable  NRC  rules  and  regulations,  each  Party  and its  respective
Representatives shall have reasonable access to (i) all of the books and records
relating to the Purchased Assets,  including all Transferred Employee Records or
other personnel and medical records  required by law, legal process or subpoena,
in the possession of the other Party,  and (ii) personnel  employed by the other
Party, in each case to the extent that such access may reasonably be required by
the requesting Party in connection with the Assumed  Liabilities and Obligations
or the Excluded  Liabilities,  or other  matters  relating to or affected by the
operation of the Purchased Assets,  including,  without  limitation,  compliance
with applicable laws and regulations and any investigations, audits or inquiries
by  Governmental  Authorities.  Such  access  shall be  afforded by the Party in
possession  of such books and records or employing  such Persons upon receipt of
reasonable advance notice and during normal business hours. The Party exercising
this  right of access  shall be  solely  responsible  for any costs or  expenses
incurred by the Parties pursuant to this Section 6.2(c). If the Party or Parties
in  possession  of such books and  records  shall  desire to dispose of any such
books and records upon or prior to the  expiration  of such  seven-year  period,
such Party or Parties shall,  prior to such disposition,  give the other Party a
reasonable  opportunity at such other Party's  expense,  to segregate and remove
such books and  records  as such other  Party may  select.  Notwithstanding  the
foregoing,  the  rights of  access to  medical  records  and other  confidential
employee records shall be subject to all applicable legal requirements.

     (d) Seller agrees (i) not to release any Person (other than Buyer) from any
confidentiality  agreement now existing with respect to the Purchased Assets, or
waive or amend any provision  thereof and (ii) at Closing,  to assign any rights
arising under any such  confidentiality  agreement (to the extent assignable) to
Buyer.

     (e) Notwithstanding the terms of the Confidentiality  Agreement and Section
6.2(b)  above,  the Parties  agree that prior to the Closing Buyer may reveal or
disclose Proprietary Information to any other Persons to the extent necessary in
connection with Buyer's  financing and risk management of the Purchased  Assets,
and, to the extent that Seller consents, which consent shall not be unreasonably
withheld,  to (i) existing and potential  customers and  suppliers,  and (ii) to
such Persons with whom Buyer expects it may have business dealings regarding the
Purchased Assets from and after the Closing Date;  provided,  however,  that all
such Persons agree in writing to maintain the confidentiality of the Proprietary
Information   on   substantially   the  same   terms  and   conditions   as  the
Confidentiality  Agreement.  The Parties further agree that prior to the Closing
Seller may reveal or disclose  Proprietary  Information  to any other Persons in
connection  with  Seller's  financing  and  risk  management  and  business  and

                                      199
<PAGE>

financing matters involving Seller's parent,  Illinova Corporation,  and, to the
extent that Buyer consents,  which consent shall not be  unreasonably  withheld,
with other Persons; provided, however, that all such Persons agree in writing to
maintain the confidentiality of the Proprietary Information on substantially the
same terms and conditions as the Confidentiality Agreement.

     (f) Except as may be permitted in the  Confidentiality  Agreement,  Interim
Agreement,  Management  Agreement or Leased  Employee  Agreement,  or during the
course of Buyer's due diligence  investigation  of the Purchased Assets prior to
the date  hereof,  Buyer  agrees that,  prior to the Closing  Date,  it will not
contact any vendors, suppliers, employees or other contracting parties of Seller
or Seller's Affiliates with respect to any aspect of the Purchased Assets or the
transactions  contemplated hereby,  without the prior written consent of Seller,
which consent shall not be unreasonably withheld.

     (g) Upon the other Party's prior written approval (which approval shall not
be  unreasonably  withheld or  delayed)  either  Party may  provide  Proprietary
Information  of the other Party to the SEC, NRC, FERC,  ICC,  IDNS,  IPSC or any
other  Governmental  Authority having  jurisdiction over the Purchased Assets or
any stock exchange,  as may be necessary to obtain Seller's Required  Regulatory
Approvals or Buyer's Required Regulatory Approvals,  respectively,  or to comply
generally with any relevant law, rule or regulation.  The disclosing Party shall
seek confidential treatment for the Proprietary Information provided to any such
Governmental  Authority and the disclosing Party shall notify the other Party as
far in advance as  practical  of its  intention  to release to any  Governmental
Authority any such Proprietary Information.

     (h)  Except  as set  forth  in  Section  6.2(e)  or as  required  by law or
Governmental Authority, or unless otherwise agreed to in writing by the Parties,
the Parties  shall keep (i) all  Proprietary  Information  confidential  and not
disclose  or  reveal  any  Proprietary  Information  to any  Person  other  than
Representatives  of the Parties who are actively and directly  participating  in
the  transactions  contemplated  hereby  or  who  otherwise  need  to  know  the
Proprietary  Information  for such purpose and to cause those Persons to observe
the terms of this Section 6.2(h) and (ii) not to use Proprietary Information for
any purpose other than consistent with the terms of this Agreement.  The Parties
shall  continue  to hold  all  Proprietary  Information  according  to the  same
internal  security  procedures  and with the same degree of care  regarding  its
secrecy and confidentiality as currently applicable thereto.  Either Party shall
notify the other Party of any  unauthorized  disclosure to third parties that it
discovers,  and shall endeavor to prevent any further such  disclosures.  Seller
shall be  responsible  for any  breach  of the terms of this  Section  6.2(h) by
Seller or Seller's  Representatives.  Buyer's  obligations  with  respect to the
confidentiality  of  Proprietary  Information  relating to the Purchased  Assets

                                      200
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shall  terminate  on the  Closing  Date  except  as  otherwise  provided  in the
Confidentiality Agreement.

     After the Closing Date, in the event that Seller is requested  pursuant to,
or required by, applicable law or regulation or by legal process to disclose any
Proprietary  Information,  Seller shall provide Buyer with prompt notice of such
request  or  requirement  in  order  to  enable  Buyer  to seek  an  appropriate
protective order or other remedy,  to consult with Seller with respect to taking
steps to resist or narrow  the scope of such  request  or legal  process,  or to
waive  compliance,  in whole or in part,  with the terms of this Section 6.2(h).
Seller agrees not to oppose any action by Buyer to obtain a protective  order or
other  appropriate  remedy  after the  Closing  Date.  In the event that no such
protective  order or other remedy is obtained,  or that Buyer waives  compliance
with the terms of this Section 6.2(h), Seller shall furnish only that portion of
the  Proprietary  Information  which  Seller is  advised  by  counsel is legally
required. In any such event Seller shall use its Commercially Reasonable Efforts
to ensure that all Proprietary Information that is so disclosed will be accorded
confidential treatment.

     (i) The Parties agree that the Confidentiality  Agreement will terminate in
accordance with its terms, without further act or evidence by the Parties.

     6.3 Expenses. Except to the extent specifically provided herein, whether or
not the transactions contemplated hereby are consummated, all costs and expenses
incurred in connection  with this  Agreement and the  transactions  contemplated
hereby, including the cost of legal, technical and financial consultants and the
cost  of  filing  for  and  prosecuting  applications  for  Required  Regulatory
Approvals,  shall be borne by the  Party  incurring  such  costs  and  expenses.
Notwithstanding  anything to the  contrary  herein,  Buyer and Seller will share
equally the cost of all filing and other fees with  respect to any NRC  filings,
and Buyer shall be responsible  for all HSR filing fees,  required to consummate
the transactions contemplated hereby.

     6.4  Further Assurances; Cooperation.

     (a)  Subject to the terms and  conditions  of this  Agreement,  each of the
Parties hereto will use Commercially  Reasonable Efforts to take, or cause to be
taken, all action, and to do, or cause to be done, all things necessary,  proper
or advisable  under  applicable  laws and  regulations  to  consummate  and make
effective  the  sale  of  the  Purchased  Assets  pursuant  to  this  Agreement,
including,  without limitation,  using Commercially Reasonable Efforts to ensure
satisfaction of the conditions precedent to each Party's obligations  hereunder.
Neither of the Parties  hereto will,  without the prior  written  consent of the
other Party or as required by  applicable  law,  take or fail to take any action

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<PAGE>

which would  reasonably be expected to prevent or materially  impede,  interfere
with or delay the transactions contemplated by this Agreement.

     (b)  From  time  to  time  after  the   Closing   Date,   without   further
consideration,  Seller  will,  at its own  expense,  execute  and  deliver  such
documents to Buyer as Buyer may reasonably  request in order to more effectively
consummate the sale and purchase of the Purchased  Assets or to more effectively
vest in Buyer good and marketable  title to the Purchased  Assets subject to the
Permitted  Encumbrances.  Seller shall cooperate with Buyer, at Buyer's expense,
in  Buyer's  efforts  to cure or remove any  Permitted  Encumbrances  that Buyer
reasonably  deems  objectionable.  From  time to time  after the  Closing  Date,
without  further  consideration,  Buyer will,  at its own  expense,  execute and
deliver such  documents to Seller as Seller may  reasonably  request in order to
evidence Buyer's assumption of the Assumed Liabilities and Obligations.

     (c) To the extent that Seller's  rights under any Seller's  Agreement to be
transferred  to Buyer  hereunder  may not be  assigned  without  the  consent of
another  Person which consent has not been obtained,  this  Agreement  shall not
constitute  an  agreement to assign the same if an  attempted  assignment  would
constitute a breach thereof or be unlawful,  and Seller,  at its expense,  shall
use Commercially  Reasonable  Efforts to obtain any such required  consent(s) as
promptly  as  possible.  Seller  and  Buyer  agree  that  if any  consent  to an
assignment of any Seller's  Agreement to be transferred  hereunder  shall not be
obtained or if any attempted  assignment  would be  ineffective  or would impair
Buyer's rights and obligations under the applicable  Seller's  Agreement so that
Buyer  would  not  in  effect  acquire  the  benefit  of  all  such  rights  and
obligations,  Seller,  to the maximum extent  permitted by law and such Seller's
Agreement,  shall after the Closing appoint Buyer to be Seller's  representative
and agent with respect to such  Seller's  Agreement,  and Seller  shall,  to the
maximum  extent  permitted by law and such Seller's  Agreement,  enter into such
reasonable  arrangements  with Buyer as are  necessary to provide Buyer with the
benefits and  obligations  of such  Seller's  Agreement.  Seller and Buyer shall
cooperate and shall each use Commercially  Reasonable  Efforts after the Closing
to obtain an assignment of such Seller's Agreement to Buyer.

     (d) For a  reasonable  time after the  Closing  Date and in addition to the
services  contemplated by the IP Services  Agreement,  Buyer and Seller agree to
provide services to each other as reasonably required to the extent necessary to
ensure the continuity of support for CPS and the orderly  completion of projects
or other work in progress  that would be  adversely  affected if those  services
were  interrupted.  Such  support  by  one  Party  to  the  other  will  not  be
unreasonably  withheld,  provided  that  requests for such support are made in a
timely manner.  The Party providing the requested support will be reimbursed for
all  reasonable  costs  thereof  in  accordance  with   established   accounting
procedures or on an alternative cost  reimbursement  basis as mutually agreed by
the Parties.

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     6.5 Public  Statements.  From the date hereof  until thirty (30) days after
the Closing Date, the Parties shall not issue any public announcement, statement
or  other  disclosure  with  respect  to  this  Agreement  or  the  transactions
contemplated  hereby without the prior written consent of the other Party, which
consent will not be unreasonably withheld or delayed,  except as may be required
by law or  Governmental  Authority or the rules or  regulations  of the New York
Stock Exchange.

     6.6 Consents and Approvals.

     (a) Seller and Buyer  shall each file or cause to be filed with the Federal
Trade Commission and the Department of Justice any notifications  required to be
filed  under the HSR Act and the rules and  regulations  promulgated  thereunder
with respect to the transactions  contemplated hereby. The Parties shall consult
with each other as to the  appropriate  time of filing  such  notifications  and
shall agree upon the timing of such  filings,  respond  promptly to any requests
for  additional  information  made by  either  of such  agencies,  and cause the
waiting  periods  under  the HSR Act to  terminate  or  expire  at the  earliest
possible  date after the date of filing.  Each Party will bear its own costs for
the preparation of any such filing.

     (b) As promptly as practicable  after the date of this Agreement and in any
event by no later than 60 days after the receipt of any findings  required to be
made by any other  Governmental  Authority  as a condition  to Buyer  making the
filings  contemplated  by this  Agreement,  Seller and Buyer shall (i)  promptly
prepare  and  file  all  necessary  documentation,  (ii)  effect  all  necessary
applications,  notices,  petitions  and filings and execute all  agreements  and
documents,  (iii) use Commercially  Reasonable Efforts to obtain the transfer or
reissuance to Buyer of all necessary Permits,  Environmental Permits,  consents,
approvals and authorizations of all Governmental Authorities, including, without
limitation,   Seller's  Required  Regulatory   Approvals  and  Buyer's  Required
Regulatory Approvals, and (iv) use Commercially Reasonable Efforts to obtain all
necessary consents,  approvals and authorizations of all other parties necessary
or advisable to consummate the  transactions  contemplated  by this Agreement or
required by the terms of any note,  bond,  mortgage,  indenture,  deed of trust,
license, franchise,  permit, concession,  contract, lease or other instrument to
which  Seller or Buyer is a party or by which any of them is bound.  The Parties
shall respond  promptly to any requests for additional  information made by such
Governmental  Authorities,  and use  their  respective  Commercially  Reasonable
Efforts to cause  regulatory  approval to be obtained at the  earliest  possible
date  after  the date of  filing.  Each  Party  will  bear its own  costs of the
preparation  of such  filings.  Each of Seller and Buyer shall have the right to
review in advance  all  characterizations  of the  information  relating  to the
transactions  contemplated  by this Agreement which appear in any filing made in
connection with the transactions contemplated hereby.

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     (c) Seller and Buyer shall  cooperate with each other and promptly  prepare
and file  notifications  with, and request Tax clearances  from, state and local
taxing authorities in jurisdictions in which a portion of the Purchase Price may
be required to be withheld or in which Buyer would  otherwise  be liable for any
Tax liabilities of Seller pursuant to such state and local Tax law.

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     (e) Buyer shall have the primary  responsibility for securing the transfer,
reissuance or procurement of the Permits and  Environmental  Permits (other than
Transferable  Permits)  effective as of the Closing Date. Seller shall cooperate
with Buyer's  efforts in this regard and provide  reasonable  assistance  in any
transfer or reissuance of a Permit or Environmental Permit held by Seller or the
procurement  of any other  Permit or  Environmental  Permit when so requested by
Buyer.

     (f) Within  fifteen  (15) days after the receipt of any Buyer's or Seller's
Required Regulatory Approval,  the Party receiving such approval (the "Receiving
Party")  shall  notify the other Party in writing if the  approval  contains any
condition that the Receiving Party  determines  could  reasonably be expected to
have a Material  Adverse Effect on the Receiving Party or, in the case of Buyer,
on the Purchased Assets; provided, however, that if the Receiving Party does not
provide  such  notice to the other  Party  within the  fifteen  (15)-day  period
specified in this sentence, the Receiving Party shall be deemed to have accepted
such Required  Regulatory  Approval,  including any condition contained therein,
and the condition to Closing set forth in Section 7.1(c) or Section  7.2(c),  as
applicable  to such Party with  respect to such  Required  Regulatory  Approval,
shall be  deemed  satisfied,  except  to the  extent  such  Required  Regulatory
Approval is not then final and  non-appealable.  Within  fifteen (15) days after
receipt of any notice specified in the previous sentence, Seller and Buyer shall
meet to  consider  what  commercially  reasonable  efforts the  Receiving  Party
intends  to take in order to  obtain  the  Required  Regulatory  Approval  or to
eliminate the  materially  adverse  conditions.  After the  Receiving  Party has
completed such agreed upon commercially  reasonable  efforts with respect to the
materially  adverse condition  contained in such Required  Regulatory  Approval,
within fifteen (15) days of such  completion,  the Receiving  Party shall notify
the other Party if the  materially  adverse  condition  has been  eliminated  or

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remains in effect,  and  whether  the  Receiving  Party  either will accept such
materially  adverse condition by a waiver of the applicable Closing condition in
Section 7.1(c) or 7.2(c) with respect to such  materially  adverse  condition or
deem that the applicable Closing condition in Section 7.1(c) or 7.2(c) cannot be
satisfied due to the materially  adverse  condition in such Required  Regulatory
Approval.

     6.7 Brokerage  Fees and  Commissions.  Seller and Buyer each  represent and
warrant to the other that no broker,  finder or other  Person is entitled to any
brokerage fees, commissions or finder's fees in connection with the transactions
contemplated  hereby by  reason of any  action  taken by the Party  making  such
representation.  Seller and Buyer will pay to the other or otherwise  discharge,
and will  indemnify and hold the other  harmless  from and against,  any and all
claims or  liabilities  for all brokerage  fees,  commissions  and finder's fees
incurred by reason of any action taken by the indemnifying party.

     6.8 Tax Matters.

     (a) All transfer and sales Taxes incurred in connection with this Agreement
and the  transactions  contemplated  hereby shall be borne  equally by Buyer and
Seller. Buyer will file, to the extent required by applicable law, all necessary
Tax Returns and other  documentation  with respect to all such transfer or sales
Taxes,  and Seller will be entitled  to review such  returns in advance  and, if
required by  applicable  law, will join in the execution of any such Tax Returns
or other documentation. Prior to the Closing Date, Buyer will provide to Seller,
to the extent possible,  an appropriate exemption certificate in connection with
this  Agreement  and  the  transactions   contemplated  hereby,  due  from  each
applicable taxing authority.

     (b) With respect to Taxes to be prorated in accordance  with Section 3.5 of
this Agreement,  Buyer shall prepare and timely file all Tax Returns required to
be filed after the Closing with  respect to the  Purchased  Assets,  if any, and
shall duly and timely  pay all such Taxes  shown to be due on such Tax  Returns.
Buyer's  preparation  of any  such Tax  Returns  shall be  subject  to  Seller's
approval,  which approval shall not be unreasonably  withheld.  Buyer shall make
such Tax Returns available for Seller's review and approval no later than twenty
(20)  Business  Days prior to the due date for filing such Tax Return.  Not less
than ten (10) Business Days prior to the due date of any such Tax Return, Seller
shall pay to Buyer the amount shown as due on such Tax Return as  determined  in
accordance with Section 3.5 of this Agreement or shall notify Buyer of any error
on such return.  Buyer and Seller  shall  negotiate in good faith to resolve any
disagreement.  If Buyer and  Seller  are  unable to agree to any such Tax Return
within five (5) Business Days following  Buyer's  receipt of  notification of an

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error from  Seller,  the Parties  shall  submit the  dispute to the  Independent
Accounting Firm in accordance with the procedures set forth in Section 6.8(d).

     (c) Buyer and Seller shall provide the other Party with such  assistance as
may  reasonably  be  requested  by  the  other  Party  in  connection  with  the
preparation  of any Tax  Return,  any audit or other  examination  by any taxing
authority,  or any judicial or administrative  proceedings relating to liability
for  Taxes,  and each will  retain and  provide  the  requesting  Party with any
records  or  information  which  may  be  relevant  to  such  return,  audit  or
examination,  proceedings or determination. Any information obtained pursuant to
this Section  6.8(c) or pursuant to any other Section  hereof  providing for the
sharing of information or review of any Tax Return or other schedule relating to
Taxes shall be kept confidential by the Parties hereto.

     (d) In the event that a dispute  arises  between Seller and Buyer as to the
amount of Taxes, or the amount of any allocation of Purchase Price under Section
3.4, the Parties shall  attempt in good faith to resolve such  dispute,  and any
amount so agreed upon shall be paid to the appropriate party. If such dispute is
not resolved  within thirty (30) days  thereafter,  the Parties shall submit the
dispute to the  Independent  Accounting Firm for  resolution,  which  resolution
shall be final, conclusive and binding on the Parties.  Notwithstanding anything
in this  Agreement to the  contrary,  the fees and  expenses of the  Independent
Accounting  Firm in resolving  the dispute  shall be borne equally by Seller and
Buyer.  Any  payment  required to be made as a result of the  resolution  of the
dispute by the  Independent  Accounting  Firm shall be made within ten (10) days
after such resolution,  together with any interest determined by the Independent
Accounting Firm to be appropriate.

     (e) On and after the Closing Date until the maturity or redemption  date of
the  Pollution  Control Bonds which were issued to finance or refinance all or a
portion of the cost of the Pollution Control Facilities:

     (i) Except as otherwise  permitted  in clauses  (ii) and (iv) below,  Buyer
will not change or permit to be changed  the  character  or nature of the use of
those  facilities  listed in  Schedule  6.8(e)  hereto (the  "Pollution  Control
Facilities")  from the manner Seller has used such facilities  prior to the sale
of the  Purchased  Assets,  unless such  changed use would  constitute  a use or
purpose  of the  Pollution  Control  Facilities  (A)  permitted  under  the  tax
compliance documents or the non-arbitrage certificates for the Pollution Control
Bonds or (B) for which tax-exempt bonds have been issued pursuant to Treas. Reg.
section 1.103-8(f) or (g) or its successor Income Tax regulations,  unless Buyer
has  obtained at its own expense an opinion  addressed  to Seller of  nationally
recognized bond counsel  reasonably  acceptable to Seller ("Bond  Counsel") that
such use will not impair (x) the exclusion  from gross income of the interest on
any issue of Pollution  Control Bonds for Federal income tax purposes or (y) the

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deductibility  of Seller's  payments of interest  based on the  restrictions  in
Section 150(b) of the Code;

     (ii) Buyer and any  transferee  which becomes  subject to the provisions of
the  foregoing  clause  (i) by  reason  of this  clause  (ii)  will  not sell or
otherwise  transfer any portion of the Pollution  Control  Facilities unless (A)
the transferee  covenants to satisfy the conditions of the foregoing  clause (i)
with respect to its ownership and use of the Pollution Control Facilities or (B)
the transfer relates to personal property;

     (iii)  Buyer will  cooperate  with Seller and use  Commercially  Reasonable
Efforts to permit Seller to have access to the Pollution  Control  Facilities at
reasonable times to examine them; and

     (iv) The  foregoing  clause (i) shall not be construed to prevent Buyer (or
any transferee) from maintaining or repairing the Pollution Control  Facilities,
ceasing to  operate,  maintain  or repair any  element or item of the  Pollution
Control Facilities, suspending the operation of the Pollution Control Facilities
on a temporary basis, or from terminating the operation of the Pollution Control
Facilities on a permanent basis and shutting down,  retiring,  abandoning and/or
decommissioning the Pollution Control Facilities; provided, however, that if the
Pollution  Control  Facilities,  in whole or in part,  are  dismantled  and sold
(including any sale for scrap), and if the operation of the Purchased Assets has
not been  terminated,  then, to the extent it is possible to do so, the proceeds
of such sale of the Pollution  Control  Facilities  shall within six months from
the date of sale be expended to acquire replacement  property to be used for the
same  qualifying  purpose as the Pollution  Control  Facilities so sold.  Seller
shall  notify  Buyer  when the  Pollution  Control  Bonds  have  matured or been
redeemed.

     6.9 Advice of Changes.  Prior to the Closing Date, each Party will promptly
advise the other in writing with respect to any matter  arising after  execution
of this Agreement which, if existing or occurring at the date of this Agreement,
would have been required to be set forth in this Agreement, including any of the
Schedules  hereto.  If Seller  advises Buyer in writing of any change  occurring
after the date of this  Agreement  but prior to Closing  that is material to any
representation, warranty or covenant of Seller under this Agreement, Buyer shall
have the right to terminate this Agreement  pursuant to Section 9.1(e). If Buyer
fails to exercise its  termination  right,  Seller's  written  notice under this
Section  6.9 will be  deemed  to have  amended  this  Agreement,  including  the
appropriate  schedule,  or to have qualified the  representations and warranties
contained  in Article  IV.  Seller  shall be entitled  to amend,  substitute  or
otherwise  modify  any  Seller's  Agreement  to the  extent  that such  Seller's
Agreement  expires  by its  terms  prior to the  Closing  Date or is  terminable
without  liability  to Buyer on or after the Closing  Date,  or if the terms and
conditions  of  such  modified  Seller's  Agreement   constituting  the  Assumed

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<PAGE>

Liabilities  and  Obligations  are on terms and conditions not less favorable to
Buyer than the  original  Seller's  Agreement.  Nothing  contained  herein shall
relieve  Seller or Buyer of any breach of  representation,  warranty or covenant
under this Agreement existing as of the date hereof or any subsequent date as of
which such representation, warranty or covenant shall have been made.

     6.10 Employees.

     (a) Buyer will offer  employment,  effective  on the Closing  Date,  to all
employees of Seller who are covered by the IBEW Collective Bargaining Agreements
and are actively  employed as of the Closing  Date in positions  relating to the
Purchased Assets ("Union Employees").

     (b) (i) Buyer will offer employment,  effective on the Closing Date, to all
CPS employees  whose  principal  place of employment is located at the Purchased
Assets who are not covered by the IBEW Collective  Bargaining  Agreements on the
Closing  Date,  and who  provide  services  in  support  of CPS,  but  excluding
employees of Seller's Support Services  Business Group, and (ii) Buyer may offer
employment to any other employee of Seller provided that Buyer obtains  Seller's
written  consent  prior  to  any  such  offer   (collectively,   the  "Non-Union
Employees").  Subject to its obligations hereunder,  Seller retains the right to
transfer any of its employees employed at CPS to any other Seller facility prior
to the Closing  Date;  provided,  however,  that key  employees  critical to the
operations  of CPS,  as  determined  by  Buyer  from  time  to  time,  shall  be
transferred only with the written consent of the Buyer.  Each person who becomes
employed by Buyer pursuant to Section 6.10(a) or (b) shall be referred to herein
as  a  "Transferred  Union  Employee"  or  "Transferred   Non-Union   Employee",
respectively, and collectively as "Transferred Employees".

     (c) All offers of  employment  made by Buyer to any of  Seller's  employees
will be made  subject  to the  Parties'  satisfaction  that an  employee  is (i)
qualified  to perform  the  duties and  responsibilities  of their  current  job
assignment with or without reasonable accommodation (or will be capable of doing
so upon return from authorized  leave of absence),  and (ii) has the appropriate
nuclear power plant access authorization. All offers of employment shall be made
in accordance with all applicable federal,  state and local laws and regulations
(including,  without limitation, Section 16-128 of the Illinois Public Utilities
Act) and,  with  respect  to Union  Employees,  the IBEW  Collective  Bargaining
Agreements.  All such  offers  of  employment  will be made in  accordance  with
Section 16-128 of the Illinois Public  Utilities Act and will therefore be at no
less than the wage rates, and substantially equivalent fringe benefits and terms
and  conditions  of  employment  that are in effect at the time of  transfer  of
ownership  of the  Purchased  Assets;  and such  wage  rates  and  substantially
equivalent fringe benefits and terms and conditions of employment shall continue
for at least 30 months from the time of said  transfer of  ownership  unless the
parties  mutually agree to different  terms and conditions of employment  within
that  30-month  period.  Seller  and  Buyer  shall  cooperate  in  developing  a

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transition  plan (the  "Transition  Plan")  for Union  Employees  and  Non-Union
Employees in accordance  with Section  16-128 of the Illinois  Public  Utilities
Act.  Seller shall be responsible  for  implementing  and funding the Transition
Plan  for  all  such  Union  Employees  and  Non-Union  Employees  who  are  not
Transferred Employees.

     (d) Schedule 6.10(d) sets forth the collective bargaining  agreements,  and
all amendments  thereto,  to which Seller is a party with the IBEW in connection
with the Purchased  Assets ("IBEW  Collective  Bargaining  Agreements").  Unless
specifically  provided for herein,  all Transferred Union Employees shall retain
their  seniority  and  receive  full  credit  for  service  with the  Seller for
eligibility  and  vesting  purposes  with  regard to Benefit  Plans with  Seller
(including  service  with a  Sponsor  to  the  extent  credited  by  Seller)  in
connection with entitlement to compensation, vacation, benefits and rights under
the IBEW Collective  Bargaining  Agreements,  and benefits and rights under each
retirement or employee benefit plan or program Buyer is required to maintain for
Transferred  Union  Employees   pursuant  to  the  IBEW  Collective   Bargaining
Agreements.  Buyer agrees to  recognize  the IBEW as the  collective  bargaining
agent for the Transferred Union Employees.

     (e) As of the  Closing  Date,  all  Transferred  Employees  shall  commence
participation  in  welfare  benefit  plans  of  Buyer  or  its  Affiliates  (the
"Replacement   Welfare   Plans")   that  will   provide   benefits  or  coverage
substantially  similar to the benefits or coverage  provided to the  Transferred
Employees  under  Seller's  plans and  programs  in effect  for the  Transferred
Employees  immediately  prior to the  Closing  Date.  Buyer  shall (i) waive all
limitations as to  pre-existing  condition  exclusions and waiting  periods with
respect to the Transferred  Employees under the Replacement Welfare Plans, other
than,  but only to the extent of,  limitations  or waiting  periods that were in
effect with respect to such employees under the welfare benefit plans maintained
by Seller and that have not been  satisfied  as of the  Closing  Date,  and (ii)
provide  each   Transferred   Employee  with  credit  for  any  co-payments  and
deductibles  paid prior to the Closing  Date  during a plan year under  Seller's
plan that has not ended as of the Closing Date, in satisfying  any deductible or
out-of-pocket  requirements  under the Replacement  Welfare Plans (on a pro-rata
basis in the event of a difference in plan years).

     (f) (i) Effective as of the Closing Date,  Buyer shall,  in accordance with
Section  16-128 of the Illinois  Public  Utilities  Act, cause to be established
defined benefit pension plans,  401(k) plans,  post-retirement  medical and life
insurance,  and other  welfare  benefit  plans and fringe  benefit plans for the
benefit of the  Transferred  Employees  (the "Buyer Benefit  Plans").  The Buyer
Benefit  Plans  shall  have  substantially  the same terms as  Seller's  defined
benefit plans,  401(k) plans,  post-retirement  medical and life insurance,  and
other  welfare  benefit  plans and fringe  benefit  plans (the  "Seller  Benefit

                                      209
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Plans") as of the Closing Date provided that no improvements  are made after the
date of this Agreement and prior to the Closing Date.

     (ii) The  Transferred  Employees shall be given credit in the Buyer Benefit
Plans for all service  with Seller as if it were service with Buyer for purposes
of determining  eligibility  for and vesting of benefits under the Buyer Benefit
Plans.

     (iii) Effective as of the Closing Date,  Transferred  Employees shall cease
to actively participate in all Seller Benefit Plans.

     (iv) Following the Closing Date:

     (A) Transferred  Employees' accrued benefits under Seller's defined benefit
pension  plans shall be frozen and shall not be  increased  as the result of any
service  completed or any  compensation  received for employment  with the Buyer
after the Closing Date.  Notwithstanding  the preceding  sentence,  and only for
purposes of determining  vesting and eligibility for early retirement  subsidies
under the Seller's defined benefit retirement plans,  Seller shall recognize the
Transferred  Employees'  employment  with the Buyer after the Closing Date as if
such employment was with the Seller. Transferred Employees shall have a right to
commence  benefits in accordance with Seller's defined benefit plans;  provided,
however,  any subsidies  reflecting  employment  described in this  subparagraph
shall be paid only if the Transferred  Employee  terminates  employment with the
Buyer.

     (B)  Transferred  Employees  who,  on or  before  the  Closing  Date,  have
satisfied the  eligibility  requirements  for  post-retirement  health  benefits
and/or life insurance  benefits  under the plans  maintained by the Seller shall
remain  eligible  for  post-retirement  benefits  pursuant  to the terms of such
plans.  With respect to these  Transferred  Employees,  Seller  shall  recognize
employment with the Buyer after the Closing Date for purposes of determining the
amount of such post-retirement  benefits and the eligibility for commencement of
such post-retirement benefits.

     (C) With respect to  Transferred  Employees  who attain age 50 on or before
the Closing Date,  Seller shall  recognize  employment  with the Buyer after the
Closing Date for purposes of determining  eligibility for post-retirement health
and life insurance benefits under the  post-retirement  benefit plans maintained
by the Seller.  With respect to these Transferred  Employees,  Seller shall also
recognize  employment  with the Buyer  after the  Closing  Date for  purposes of
determining the amount of such post-retirement  benefits and the eligibility for
commencement of such post-retirement benefits.

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<PAGE>

     (D) Buyer shall provide  Seller with  information  regarding the employment
status of Transferred Employees no less often than annually.  Such data shall be
sufficient to enable Seller to implement the provisions of this Section 6.10.

     (E) Nothing in this Section  6.10(f) shall limit Seller's  ability to amend
Seller's Benefit Plans after the Closing Date.

     (g) To the extent allowable by law, and subject to Seller obtaining written
agreement  from  the  IBEW,   Seller  shall  cause  to  be  transferred   assets
representing  the  account  balance  of  all  Transferred  Employees  under  the
qualified  defined  contribution  plans  maintained by the Seller (the "Seller's
Savings Plans"). In implementing this Section 6.10(g):

     (i) The transfer shall be made as soon as practicable following the Closing
Date, in cash and cash equivalents,  and shall be made to Buyer's  tax-qualified
401(k) plans in which Transferred Employees participate after the Closing Date.

     (ii) Buyer  agrees that the assets so  transferred  may include  promissory
notes evidencing loans from the Seller's Savings Plans to Transferred  Employees
that are  outstanding  as of the transfer date.  However,  except as provided in
Section  6.10(d),  any  defined  contribution  plan of Buyer  or its  Affiliates
accepting  such a transfer  shall not be required  to make any further  loans to
Transferred Employees after the Closing Date.

     (iii) Buyer  agrees that the assets so  transferred  may include  shares of
common stock of Seller or its  Affiliates  representing  Transferred  Employees'
investment  in such stock as of the Closing  Date.  Buyer agrees to maintain the
availability  to  Transferred  Employees  of an  investment  in such stock for a
period of at least 30 months  from the Closing  Date.  During  such  period,  no
additional shares of such stock will be purchased either pursuant to employee or
employer contributions to the plan or pursuant to the reinvestment of dividends.
However,  Transferred  Employees  may  transfer  assets  out of such  stock fund
pursuant to rules established under Buyer's tax-qualified 401(k) plan.

     (h) Buyer shall establish severance plans ("Buyer's Severance Plans") which
will provide (i) benefits to Transferred  Union  Employees no greater than those
benefits  provided  to  Seller's  Union  Employees   pursuant  to  the  "Utility
Agreement"  dated  May 9,  1997,  and (ii)  benefits  to  Transferred  Non-Union
Employees  no  greater  than  those  benefits  provided  to  Seller's  Non-Union
Employees  pursuant to the  "Illinova  Severance  Policy for  Nonunion  Salaried
Employees" dated January 1, 1997.  Seller shall reimburse Buyer, on no less than
an annual  basis,  for the actual  severance  payments  made to any  Transferred
Employee who is eligible for a benefit under Buyer's  Severance Plans and who is
terminated  for  reasons  other than for cause or  disability  during the period

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beginning  on the  Closing  Date and ending on the second  anniversary  thereof;
provided,  however,  that if more  than 25% of the total  number of  Transferred
Employees are so  terminated  during such two-year  period,  Seller's  liability
shall be limited to the actual  severance  payments made to the first 25% of the
total number of Transferred Employees who are so terminated.

     (i) Seller shall be responsible,  with respect to the Purchased Assets, for
performing and discharging all  requirements to be performed by Seller up to the
Closing  Date as set forth  under the WARN Act and  under  applicable  state and
local laws and regulations.

     (j) Seller is responsible for extending COBRA continuation  coverage to all
employees  and former  employees at CPS,  and  qualified  beneficiaries  of such
employees  and former  employees,  who become or became  entitled  to such COBRA
continuation  coverage on or before the Closing Date by reason of the occurrence
of a qualifying  event on or before the Closing Date,  including  those for whom
the Closing  Date occurs  during  their COBRA  election  period.  Buyer shall be
responsible  for  providing  COBRA  continuation  coverage  only to  Transferred
Employees and qualified  beneficiaries  of such employees who become entitled to
such COBRA  continuation  coverage on or after the Closing Date by reason of the
occurrence of a qualifying event after the Closing Date.

     (k) Seller shall remain responsible for paying Transferred  Employees:  (i)
all salary and wages,  and a pro rata  portion of any bonuses  and/or  incentive
compensation  that were earned for time  worked for Seller  prior to the Closing
Date;  and  (ii)  all  workers'  compensation,  disability  benefits,  or  other
insurance  benefits  that were  accrued or for which  entitlement  to payment is
based upon events  occurring  prior to the Closing Date,  including any incurred
but unreported claims under employee benefit plans maintained by Seller.  Seller
shall pay to Buyer as promptly as practicable following the Closing Date, but no
later than the 45th day, the cash equivalent for all accrued and unused vacation
time for Transferred Employees which has accrued as of the Closing Date.

     (l)  Individuals  who  are  otherwise   "Union   Employees"  or  "Non-Union
Employees"  but who are not  actively at work on the Closing Date due to a leave
of absence  covered by the Family  and  Medical  Leave Act,  or due to any other
authorized leave of absence,  shall nevertheless be treated as "Union Employees"
or as "Non-Union  Employees,"  as the case may be, on such date if they are able
(i) to return to work within the protected period under the Family Medical Leave
Act or such other leave time,  whichever is applicable,  and (ii) to perform the
essential functions of their job, with or without a reasonable accommodation.

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     (m) All Transferred  Employee Records shall be delivered promptly after the
Closing Date to Buyer.

     6.11 Risk of Loss.

     (a) Between the date hereof and the Closing Date,  Buyer shall not bear any
risk of loss or damage to the property  included in the Purchased  Assets except
to the extent arising out of or resulting  from a material  breach by PECO under
Section 6.2 of the Management  Agreement or directly resulting from conduct of a
PECO employee that constitutes willful misconduct or gross negligence; provided,
however,  that  conduct of non-Peco  employees  shall not be imputed to PECO for
purposes of this  Agreement.  Seller  shall  replace or repair any damage to the
Purchased Assets in accordance with Good Utility Practices,  except as otherwise
provided in the following sentence or in paragraphs (b) or (c) below.

     (b) If, before the Closing Date all or any portion of the Purchased  Assets
are taken by eminent domain or are the subject of a pending or (to the Knowledge
of Seller)  contemplated  taking  which has not been  consummated,  Seller shall
notify  Buyer  promptly in writing of such fact.  If such taking  would create a
Material  Adverse  Effect,  Buyer and Seller  shall  negotiate  in good faith to
settle the loss resulting from such taking (including,  without  limitation,  by
making a fair and  equitable  adjustment  to the Purchase  Price) and, upon such
settlement,  consummate the transactions contemplated by this Agreement pursuant
to the terms of this  Agreement.  If no such  settlement is reached within sixty
(60) days after Seller has notified  Buyer of such taking,  then Buyer or Seller
may terminate this Agreement pursuant to Section 9.1(g).

     (c) If, before the Closing Date all or any portion of the Purchased  Assets
are damaged or  destroyed by fire or other  casualty,  Seller shall notify Buyer
promptly in writing of such fact. If such damage or  destruction  would create a
Material  Adverse  Effect and Seller has not notified  Buyer of its intention to
cure such damage or destruction  within fifteen (15) days after its  occurrence,
Buyer and Seller shall negotiate in good faith to settle the loss resulting from
such casualty  (including,  without  limitation,  by making a fair and equitable
adjustment to the Purchase  Price) and,  upon such  settlement,  consummate  the
transactions  contemplated  by this  Agreement  pursuant  to the  terms  of this
Agreement.  If no such settlement is reached within sixty (60) days after Seller
has notified  Buyer of such  casualty,  then Buyer may terminate  this Agreement
pursuant to Section 9.1(g).

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     6.12 Decommissioning Funds.

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     6.13 Spent Nuclear Fuel Fees. Between the date hereof and the Closing Date,
and at all times  thereafter,  subject to the terms of the Interim Agreement and
the  Management  Agreement,  Seller will pay all Spent Nuclear Fuel Fees and any
other fees  associated with  electricity  generated at CPS and sold prior to the
Closing  Date,  and Buyer shall have no  liability or  responsibility  therefor.
Buyer shall pay and discharge all fees and expenses  associated with the nuclear
fuel consumed in CPS and sold from and after the Closing Date,  including  Spent
Nuclear  Fuel  Fees,  calculated  based  upon  electricity  generated  from such
consumed  nuclear fuel, as provided in  Department  of Energy  regulations,  and
Seller shall have no liability or  responsibility  therefor.  Buyer shall assume
title to and  responsibility  for the storage and disposal of the spent  nuclear
fuel at the Site as of the Closing Date.  Subject to Seller's  rights to recover
its investment in the Private Fuel Storage L.L.C. facility in Utah, Seller shall
assign to Buyer the Department of Energy Standard Contract for Disposal of Spent
Fuel  and/or  High Level  Waste and shall  provide  the  required  notice to the
Department of Energy within ninety (90) days of transfer of title to spent fuel.

     6.14 Department of Energy  Decontamination and Decommissioning Fees. Seller
will   continue   to  pay  all   Department   of  Energy   Decontamination   and

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Decommissioning  Fees  relating to nuclear  fuel  purchased  and consumed at CPS
prior to the Closing Date,  including,  without  limitation,  all annual Special
Assessment  invoices to be issued  after the Closing Date by the  Department  of
Energy,  as contemplated by its regulations at 10 C.F.R.  Part 766  implementing
Sections 1801, 1802 and 1803 of the Atomic Energy Act,  relating to such nuclear
fuel purchased and consumed prior to the Closing Date.

     6.15 Cooperation  Relating to Insurance and  Price-Anderson  Act. Until the
Closing,  Seller will  maintain in effect the same level of property  damage and
liability  insurance  for  the  Facilities  as in  effect  on the  date  hereof,
including,  without  limitation,  those insurance policies described in Schedule
4.9 (unless  substitute  policies are obtained  under Section 6.1).  Buyer shall
obtain  prior to or on the Closing Date nuclear  insurance  and other  insurance
policies in  accordance  with  Schedule  6.15 or as  otherwise  required by law.
Seller shall  reasonably  cooperate  with Buyer's  efforts to obtain  insurance,
including  insurance required under the Price-Anderson Act or other Nuclear Laws
with  respect  to the  Purchased  Assets.  In  addition,  Seller  agrees  to use
reasonable  efforts to assist  Buyer in making any  claims  against  pre-Closing
insurance  policies  of Seller  that may  provide  coverage  related  to Assumed
Liabilities and Obligations.  Buyer agrees that it will indemnify Seller for its
reasonable  out-of-pocket  expenses  incurred in providing  such  assistance and
cooperation.

     6.16 Tax Clearance  Certificates.  Seller and Buyer shall cooperate and use
their best efforts to cause the tax clearance certificates described in Schedule
4.20 of this Agreement to be issued by the appropriate  taxing authorities prior
to the Closing Date or as soon as practicable thereafter.

     6.17 Remediation.  Buyer has previously  completed its Phase I and Phase II
environmental   site   assessments  at  the  Site  and  has   identified   those
Environmental  Conditions at the Site set forth on Schedule 6.17. Buyer will not
conduct any additional environmental site assessments unless Buyer becomes aware
of any  Environmental  Condition at the Site that is  reasonably  likely to give
rise to an  Environmental  Claim or Remediation  activity that would result in a
liability or  obligation in excess of $250,000 or unless  otherwise  required by
law.  Buyer  agrees  to share  with  Seller  all  reports,  analyses,  and other
documents produced or prepared by Buyer, its Affiliates or Buyer's environmental
consultants  with respect to Buyer's  environmental  due  diligence at the Site.
Seller hereby agrees to perform the type and scope of  Remediation  set forth on
Schedule 6.17 in accordance with applicable  Environmental Law. Seller shall use
Commercially  Reasonable  Efforts to complete any such Remediation work prior to
the  Closing  Date to the  extent  such  Remediation  work is  capable  of being
performed prior to the Closing Date.  With respect to any  Remediation  work, or
portion thereof, which reasonably cannot be completed prior to the Closing Date,
Seller  may  elect to  complete  such  work or  permit  Buyer to  complete  such
Remediation and Seller shall  indemnify Buyer for all reasonable  costs thereof.
However,  Seller  shall not be  required to perform or  indemnify  Buyer for any
Remediation (1) which is required as a result of any use of or operations at the
Site  other  than such use and  operations  as they  existed  on or prior to the
Closing Date (including, without limitation, any improvement or expansion of the
current operations or other construction, demolition or excavation activities at
the Site),  or (2) which arises from acts of Buyer or its  employees,  agents or

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independent  contractors  after the Closing  Date.  To the extent  allowed under
Environmental Law, the Remediation  measures under this Section 6.17 may include
reasonable land use controls,  as appropriate,  to the extent that such controls
do not unreasonably  interfere with the use or operation of the Purchased Assets
after the Closing  Date.  Between the date hereof and the Closing  Date,  Seller
shall have exclusive authority over the performance of the Remediation set forth
on Schedule 6.17, and except as otherwise  required by Environmental  Law, Buyer
shall not initiate or permit any communication,  orally or in writing,  with any
Governmental  Authority  regarding  such  Remediation  without the prior written
consent of Seller.  With  respect to any  Remediation  to be performed by Seller
after the  Closing  Date,  Buyer  will grant to Seller  and its  contractors  an
appropriate  license  to enter  the Site at  reasonable  times and  perform  the
Remediation work, provided that Seller and its contractors shall comply with all
rules and  regulations of Buyer and any  Governmental  Authority with respect to
the Site and shall not  unreasonably  interfere  with the operations of Buyer at
the Site.

     6.18 NRC License Transfer Requirements.  Buyer will accept conditions in an
NRC license  transfer  order that approves  transfer of the CPS license to Buyer
that are  reasonable,  appropriate  and  similar  in  scope to the  requirements
imposed on Buyer by that  certain  NRC Order  Approving  Transfer of License and
Conforming  Amendment,  and the associated Safety Evaluation Report, dated April
12,  1999,  with  respect to the  transfer of the NRC license for the Three Mile
Island Unit 1 nuclear plant from GPU Nuclear, Inc. to Buyer.

     6.19  Metering.  The Parties  have  heretofore  engaged a  consultant  (the
"Metering  Consultant") to examine the Facilities and related infrastructure for
the purpose of providing two estimates for the cost of acquiring and  installing
"Revenue  Grade  Metering"  (as  defined in  Amendment  No. 3 to the  Management
Agreement) at the metering  points and in accordance with the proposal set forth
in Amendment No. 3 to the Management Agreement,  with one (1) estimate being the
cost of acquiring and installing Revenue Grade Metering on the "low side" of the
main power  transformer  located in the CPS switchyard (the "Low Side Estimate")
and the other estimate being the cost of acquiring and installing  Revenue Grade
Metering  on the "high  side" of the main power  transformer  located in the CPS
switchyard  (the "High Side  Estimate").  The Parties agree to share equally the
fees and  expenses  of the  Metering  Consultant  and to install  Revenue  Grade
Metering  on the "high  side" of the main power  transformer  as proposed in the
High Side  Estimate.  Buyer and Seller shall share equally all  acquisition  and
installation costs equal to the Low Side Estimate; Seller agrees to pay the next
xxxxxxxx  of  construction  costs,  and the Parties  agree to share  equally any
amount above such xxxxxxxx.

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     6.20 Right to Participate in Electric Generating Projects.

     (a) For a  period  of ten  (10)  years  following  the  Closing  Date  (the
"Restricted  Period"),  Buyer  hereby  grants to Seller (i) the first  right and
option to  participate  with Buyer  equally in any non-CPS  electric  generating
facilities  or  projects  to be  constructed  or  developed  at the Site for the
generation of electric  energy to be  transmitted to customers or users off-Site
(each, a "Generating  Project") and (ii) a right of first refusal to provide any
transmission  services with respect to any Generating  Project.  For purposes of
determining what constitutes equal  participation in a Generating  Project,  the
value of any land,  facilities  or other  property  contributed  by Buyer to the
Generating  Project which were included in the Purchased  Assets shall be deemed
to be zero.  Buyer  shall  promptly  notify  Seller in  writing  if  during  the
Restricted  Period Buyer decides to proceed with a Generating  Project or enters
into discussions with a third party concerning a Generating Project  (including,
without  limitation,  financial costs and projections).  Within ninety (90) days
following  receipt of written  notice  from Buyer,  Seller  shall  notify  Buyer
whether or not it desires to participate in the  Generating  Project;  provided,
however,  if Seller requires more information  concerning the Generating Project
and such information is reasonably  available to or can be reasonably  generated
by Buyer in order to evaluate  participation  in the Project,  then Seller shall
request such  information  in writing,  and Seller shall have until the later of
(i) thirty (30) days following receipt of such additional  information,  or (ii)
expiration  of the original  ninety (90) day period to notify  Buyer  whether it
desires to participate in the Generating  Project.  Buyer shall notify Seller at
least  five (5)  Business  Days in advance of any  meetings  with third  parties
concerning  the  Generating  Project  which are to be held either  during any of
Seller's  evaluation periods or after Seller has notified Buyer of its intent to
participate  in the  Generating  Project,  and  Seller  shall  have the right to
participate in any such meetings.  Following Seller's notification of Buyer that
Seller intends to participate  in a Generating  Project,  Seller and Buyer shall
promptly  document  their  joint  participation,  seek to obtain  all  necessary
approvals  by  Governmental  Authorities  and  agree  on  schedule,  budget  and
management  responsibilities for the Generating Project.  Seller's participation
in any Generating  Project may be through Seller or any of its  Affiliates,  and
all  instruments  or  agreements  documenting  the  Generating  Project (and the
Parties' respective rights and obligations with respect to the Project) shall be
reasonably acceptable to Buyer and Seller.

     (b) (i)  Subject to the  exceptions  set forth in  subsection  (ii) of this
Section  6.20(b),  Buyer agrees that during the Restricted  Period,  it will not
sell,  transfer,  lease or  license  to a third  party any of the Real  Property
transferred  to Buyer  hereunder  or enter  into any  discussions  with  respect
thereto (a "Transfer")  without first offering such Real Property to Seller.  In
the event Buyer decides to Transfer any such Real Property,  Buyer will promptly
notify  Seller of such  fact,  and  Seller  shall  have the  exclusive  right to

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negotiate with Buyer  concerning the Transfer of such Real Property for a period
of sixty (60) days (the "Exclusive Negotiation Period"). If Buyer and Seller are
unable to agree on the terms of the  Transfer  of such Real  Property  to Seller
during the Exclusive  Negotiation  Period, or in the event Seller notifies Buyer
in  writing  that it does not desire to  Transfer  such Real  Property  prior to
expiration  of the  Exclusive  Negotiation  Period,  Buyer may  offer  such Real
Property to third parties.  If Buyer  thereafter  receives an offer from a third
party with respect to such Real  Property (a "Third Party  Offer"),  Buyer shall
promptly notify Seller in writing  (setting forth the terms and condition of the
Third Party  Offer) and Seller shall have the right and option  (exercisable  by
delivery of written notice to Buyer within the thirty (30) day period  following
Seller's  receipt of written  notice of the Third  Party  Offer) to buy or lease
such Real Property on the same terms and conditions set forth in the Third Party
Offer. If Seller does not notify Buyer that it desires to buy or lease such Real
Property  within  such  thirty (30) day  period,  Buyer may  Transfer  such Real
Property to the third party (but only upon the terms and conditions set forth in
the Third  Party  Offer)  within one hundred  eighty  (180) days  following  the
earlier of  Seller's  notification  that it does not desire to buy or lease such
Real  Property or  expiration  of the thirty (30) day period.  If Buyer fails to
Transfer  such Real  Property to the third party within such one hundred  eighty
(180) day  period,  such Real  Property  shall again be subject to the terms and
condition of this Section 6.20. The covenants of Buyer set forth in this Section
6.20(b) shall be covenants running with the land and shall be included in and/or
recorded with the special  warranty deed with respect to the Real Property to be
delivered to Buyer at Closing.

     (ii) The  requirements of Section  6.20(b)(i) shall not apply to any of the
following Transfers during the Restricted Period:

     (A) Any  Transfer to an  Affiliate  of Buyer which  agrees in the  Transfer
documents for the benefit of Seller to be bound in the same manner and degree as
Buyer to the provisions of this Section 6.20;

     (B) Any lease respecting the Real Property  existing at the time of Closing
and constituting a portion of the Assumed  Liabilities and  Obligations,  but no
extensions or  modifications  thereof  unless such  extensions or  modifications
specifically contain for the benefit of Seller restrictive  covenants consistent
with this Section 6.20; or

     (C) Any  Transfer of the Real  Property to a third party in an  arms-length
transaction  in which  the  buyer  or  lessee  agrees  not to use,  directly  or
indirectly,   such  Real  Property   during  the   Restricted   Period  for  the
construction, operation, or use of any electric generating facility or equipment
that produces,  individually  or in the aggregate,  more than 1MW of electricity
for consumption by customers or users off-Site.

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     6.22  Personal  Property  Insurance.  Buyer (on  behalf  of itself  and its
Affiliates) agrees to (i) request its insurers to include Seller's  Transmission
Assets,  Excluded Other Assets,  and other items of tangible  personal  property
owned by Seller at the Site under Buyer's  insurance  policies after the Closing
Date and to name Seller as an additional insured thereunder,  and (ii) waive any
right of recovery against Seller for "accidental property damage" (as defined in
the NEIL  policies);  provided,  however,  that Buyer shall provide  Seller with
quotes  from its  insurers  regarding  any  incremental  premium or other  costs
related to including  Seller's  assets under such policies,  including,  without
limitation,  any deductible,  retention or similar costs, and Buyer shall obtain
Seller's approval before incurring any such incremental  premiums or other costs
on Seller's behalf.

                                  ARTICLE VII

                                   CONDITIONS

     7.1  Conditions  to  Obligations  of  Buyer.  The  obligations  of Buyer to
purchase  the  Purchased  Assets  and  to  consummate  the  other   transactions
contemplated  by this Agreement  shall be subject to the fulfillment at or prior
to the  Closing  Date (or the  waiver in  writing  by  Buyer)  of the  following
conditions:

     (a) The waiting period under the HSR Act applicable to the  consummation of
the sale of the Purchased Assets  contemplated hereby shall have expired or been
terminated;

     (b) No preliminary or permanent  injunction or other order or decree by any
federal or state court or Governmental Authority which prevents the consummation
of the sale of the Purchased Assets  contemplated  herein shall have been issued
and remain in effect  (each Party  agreeing to  cooperate in all efforts to have
any such injunction,  order or decree lifted) and no statute, rule or regulation

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shall  have been  enacted  by any state or federal  government  or  Governmental
Authority which prohibits the consummation of the sale of the Purchased Assets;

     (c) Buyer shall have received all of Buyer's Required Regulatory Approvals,
which approvals shall contain no condition which could reasonably be expected to
have a  material  adverse  effect on the  Purchased  Assets  or Buyer,  and such
approvals shall be final and non-appealable;

     (d) Seller shall have performed and complied in all material  respects with
the covenants and agreements  contained in this Agreement  which are required to
be performed and complied with by Seller on or prior to the Closing Date;

     (e)  The  representations  and  warranties  of  Seller  set  forth  in this
Agreement that are qualified by materiality  shall be true and correct as of the
Closing  Date and all other  representations  and  warranties  shall be true and
correct in all material  respects as of the Closing Date, in each case as though
made at and as of the Closing Date;

     (f) Buyer shall have received  certificates  from an authorized  officer of
Seller, dated the Closing Date, to the effect that, to such officer's Knowledge,
the conditions set forth in Sections  7.1(d),  (e), (j), (l), (m), (n), (p), (t)
and (u) have been satisfied by Seller;

     (g) Buyer shall have  received an opinion as to the  matters  contained  in
Exhibit J hereto from Seller's counsel (which,  except as to regulatory matters,
may be  delivered  by Seller's  general  counsel),  dated the  Closing  Date and
reasonably satisfactory in form and substance to Buyer and its counsel;

     (h) Seller shall have delivered, or caused to be delivered, to Buyer at the
Closing, Seller's closing deliveries described in Section 3.6;

     (i) Buyer shall have received  from a title  insurance  company  reasonably
acceptable to Buyer ALTA owner's title insurance  policies on the Real Property,
in form and substance reasonably  satisfactory  (including no materially adverse
conditions)  to  Buyer  and  containing   affirmative  insurance  as  Buyer  may
reasonably request with respect to the Permitted  Encumbrances and Real Property
Agreements,  insuring  title as described  in Section  4.7,  subject only to the
Permitted Encumbrances.  Buyer shall provide Seller with a copy of a preliminary
title report and an updated survey for the Real Property to the extent  obtained
by Buyer;

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     (j) Since the date of this Agreement, no Material Adverse Effect shall have
occurred and be continuing;

     (k) The IRS rulings or opinions of counsel  applicable to Buyer as provided
in Section 6.12 shall have been received;

     (l) Seller shall have filed,  or cause to be filed,  in the land records of
Dewitt  County,  a  restrictive  covenant,  in  form  and  substance  reasonably
satisfactory to Buyer, prohibiting the use of the Excluded Parcels for a term of
not less than 25 years for any purpose  related to electric  generation  of more
than 1 MW of electricity for consumption by customers or users off-Site;

     (m) Seller shall have completed in accordance  with Good Utility  Practices
and in  conformity  with all  applicable  legal  requirements  all material work
required to be accomplished by the Closing Date under Seller's Y2K Plan;

     (n) All Low Level Waste that has been  generated in the  operations  of the
Facilities  more than 60 days prior to the Closing  Date shall have been shipped
off-Site by Seller for  permanent  disposal in  accordance  with all  applicable
legal  requirements,  and all Low Level Waste generated in the operations of the
Facilities  prior to the Closing Date shall have been properly  bagged,  tagged,
packaged  and/or  stored by Seller at the  Facilities  in  accordance  with Good
Utility Practice for handling Low Level Waste;

     (o) The lien of the Mortgage  Indenture on the Purchased  Assets shall have
been  released and any  documents  necessary to evidence such release shall have
been delivered to the title company;

     (p) All  consents and  approvals  for the  consummation  of the sale of the
Purchased Assets contemplated hereby required under the terms of any note, bond,
mortgage,  indenture,  material  agreement or other  instrument or obligation to
which Seller is a party or by which Seller, or any of the Purchased Assets,  may
be bound,  shall have been  obtained,  other than those  which if not  obtained,
would not, individually and in the aggregate, create a Material Adverse Effect;

     (q) Buyer and Seller shall have agreed to the terms and  conditions  of the
Easement Agreement,  the Environmental  Laboratory Lease, the Emergency Off-Site
Facilities Lease and the Electric Service  Agreement;  Buyer shall be reasonably
satisfied  with the scope  and  amounts  to be  charged  by Seller  under the IP
Service  Agreement  (other than  information  technology  charges  described  in
Exhibit F); Seller shall have entered into each of the Ancillary Agreements; and
the Ancillary Agreements shall be in full force and effect;

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     (r) The Total  FMV of the  Decommissioning  Funds  shall be as set forth in
Section 6.12;

     (s) Buyer shall not have become aware of any Environmental Condition at the
Site (other than those  described in Schedules  4.10 or 6.17) that is reasonably
likely to give rise to an Environmental Claim or Remediation activity that would
result in a liability or  obligation  in excess of $250,000,  unless  Seller has
agreed to  indemnify  Buyer for any  liability or  obligation  in excess of such
amount;

     (t) Seller shall have  completed  all  Remediation  required  under Section
6.17, or, alternatively,  shall indemnify Buyer for any and all such Remediation
costs to be incurred after the Closing Date; and

     (u) Seller shall not be in default of any of its material obligations under
the Management Agreement.

     7.2 Conditions to Obligations of Seller.  The obligations of Seller to sell
the Purchased  Assets and to consummate the other  transactions  contemplated by
this  Agreement  shall be subject to the  fulfillment at or prior to the Closing
Date (or the waiver in writing by Seller) of the following conditions:

     (a) The waiting period under the HSR Act applicable to the  consummation of
the sale of the Purchased Assets  contemplated hereby shall have expired or been
terminated;

     (b) No preliminary or permanent  injunction or other order or decree by any
federal or state court or Governmental Authority which prevents the consummation
of the sale of the Purchased Assets  contemplated  herein shall have been issued
and remain in effect  (each Party  agreeing to use its best  efforts to have any
such  injunction,  order or decree  lifted) and no statute,  rule or  regulation
shall  have been  enacted  by any state or federal  government  or  Governmental
Authority in the United States which  prohibits the  consummation of the sale of
the Purchased Assets;

     (c)  Seller  shall  have  received  all  of  Seller's  Required  Regulatory
Approvals,  which approvals shall contain no condition which could reasonably be
expected to have a material  adverse effect on Seller,  and such approvals shall
be final and non-appealable;

     (d) Buyer shall have  performed and complied with in all material  respects
the covenants and agreements  contained in this Agreement  which are required to
be performed and complied with by Buyer on or prior to the Closing Date;

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     (e) The representations and warranties of Buyer set forth in this Agreement
that are  qualified by  materiality  shall be true and correct as of the Closing
Date and all other  representations  and warranties shall be true and correct in
all material respects as of the Closing Date, in each case as though made at and
as of the Closing Date;

     (f) Seller shall have received a certificate from an authorized  officer of
Buyer,  dated the Closing Date, to the effect that the  conditions  set forth in
Sections 7.2(d) and (e) have been satisfied by Buyer;

     (g)  Effective  upon  Closing,  Buyer shall have  assumed,  as set forth in
Section  6.10,  all of the  applicable  obligations  under  the IBEW  Collective
Bargaining Agreements as they relate to Transferred Union Employees;

     (h) Seller  shall have  received  an opinion as to the matters set forth on
Exhibit K hereto from Buyer's counsel (which,  except as to regulatory  matters,
may be  delivered  by  Buyer's  general  counsel),  dated the  Closing  Date and
reasonably satisfactory to Seller and its counsel;

     (i) Buyer shall have delivered, or caused to be delivered, to Seller at the
Closing, Buyer's closing deliveries described in Section 3.7;

     (j) Buyer and  Seller  shall  agreed  to the  terms and  conditions  of the
Easement Agreement,  the Environmental  Laboratory Lease, the Emergency Off-Site
Facilities Lease and the Electric Service Agreement;  Seller shall be reasonably
satisfied  with the amounts to be paid by Buyer  under the IP Service  Agreement
(other than information  technology charges described in Exhibit F); Buyer shall
have entered into each of the Ancillary Agreements, and the Ancillary Agreements
shall be in full force and effect;

     (k) Since the date of this Agreement, no Material Adverse Effect shall have
occurred and be continuing;

     (l) The IRS rulings or opinions of counsel applicable to Seller as provided
in Section 6.12 shall have been received;

     (m) The lien of the Mortgage  Indenture on the Purchased  Assets shall have
been  released and any  documents  necessary to evidence such release shall have
been delivered to the title company; and

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     (n) Each of PECO and British  Energy plc shall have  executed and delivered
the financial assurance letters set forth in Exhibits L and M, respectively; and

     (o) PECO shall not be in default of any of its material  obligations  under
the Management Agreement.


                                  ARTICLE VIII

                                 INDEMNIFICATION

     8.1 Indemnification.

(1) Buyer shall indemnify,  defend and hold harmless Seller, its Affiliates, and
their respective officers, directors, employees, shareholders, and agents (each,
a "Seller  Indemnitee")  from and against any and all  claims,  demands,  suits,
losses,  liabilities,   damages,  obligations,   payments,  costs  and  expenses
(including,  without limitation,  the costs and expenses of any and all actions,
suits, proceedings, assessments, judgments, settlements and compromises relating
thereto  and  reasonable  attorneys'   fees  and  reasonable   disbursements  in
connection  therewith)  (each, an  "Indemnifiable  Loss"),  asserted  against or
suffered by any Seller Indemnitee  relating to, resulting from or arising out of
(i)  any  breach  by  Buyer  of any  representations,  warranties  or  covenants
contained in this Agreement, (ii) the Assumed Liabilities and Obligations, (iii)
any Inspection,  or the use by Buyer of the non-exclusive  license granted under
Section 2.1(l),  (iv) any Third Party Claims against a Seller Indemnitee arising
out of or in  connection  with  Buyer's  ownership or operation of CPS and other
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     (b) Seller shall  indemnify,  defend and hold harmless Buyer, its officers,
directors,  members,  employees,  shareholders,  Affiliates  and agents (each, a
"Buyer  Indemnitee") from and against any and all Indemnifiable  Losses asserted
against or suffered  by any Buyer  Indemnitee  relating  to,  resulting  from or
arising out of (i) any breach by Seller of any  representations,  warranties  or
covenants  contained in this  Agreement,  (ii) the Excluded  Liabilities,  (iii)
noncompliance  by Seller  with any bulk sales or  transfer  laws as  provided in
Section 10.11,  (iv) any Third Party Claims against a Buyer  Indemnitee  arising
out of or in connection  with  Seller's  ownership or operation of the Purchased
Assets on or prior to the  Closing  Date,  except for  Assumed  Liabilities  and
Obligations,  (v) any Third Party Claims against a Buyer Indemnitee  arising out
of or in connection with Seller's ownership or operation of the Excluded Assets,
(vi) all Taxes  incurred by reason of any act of Seller that either  constitutes

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an act of  "self-dealing"  as defined in Treas.  Reg. section  1.468A-5(b)(2) or
results in the  disqualification  of the  Qualified  Decommissioning  Fund under
Treas. Reg. section 1.468A-5 (except as otherwise contemplated by Section 6.12),
or (vii) any claims or  attachments  of Seller or any creditor of Seller against
the Decommissioning Funds after the Closing Date.

     (c) Notwithstanding anything to the contrary contained herein:

     (i) Any Person entitled to receive indemnification under this Agreement (an
"Indemnitee") shall use Commercially  Reasonable Efforts to mitigate all losses,
damages,  and  the  like  relating  to  a  claim  under  these   indemnification
provisions,  including availing itself of any defenses,  limitations,  rights of
contribution,  claims  against  third Persons and other rights at law or equity.
The Indemnitee's  Commercially  Reasonable  Efforts shall include the reasonable
expenditure  of money to mitigate or otherwise  reduce or eliminate  any loss or
expenses for which  indemnification  would  otherwise be due, and the Indemnitee
shall advise Indemnitor promptly of such expenditure (or provide Indemnitor with
the  opportunity  to pay  such  expenditures  directly).  The  Indemnitor  shall
promptly reimburse  Indemnitee for the Indemnitee's  reasonable  expenditures in
undertaking  the  mitigation  (together  with interest  thereon from the date of
payment thereof to the date of repayment at the "prime rate" as published in The
Wall Street Journal).

     (ii) Any  Indemnifiable  Loss shall be net of (i) the dollar  amount of any
insurance or other  proceeds  actually  received by the Indemnitee or any of its
Affiliates with respect to the Indemnifiable  Loss, and (ii) Income Tax benefits
to the Indemnitee to the extent realized by the Indemnitee,  but such net amount
shall be  increased  to give  effect to the  Income  Taxes  attributable  to the
receipt  of  any   indemnification   payment   hereunder.   Any  Party   seeking
indemnification  hereunder shall use best efforts to make claims (including both
cost of defense and indemnity) under applicable  insurance policies with respect
to any such Indemnifiable Loss.

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     (d) The expiration or termination of any  representation  or warranty shall
not affect the Parties'  obligations  under this  Section 8.1 if the  Indemnitee

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provided the Person  required to provide  indemnification  under this  Agreement
(the  "Indemnifying  Party") with proper  notice of the claim or event for which
indemnification   is   sought   prior  to  such   expiration,   termination   or
extinguishment.

     (e) Except to the extent  otherwise  provided in Article IX, the rights and
remedies of Seller and Buyer under this Article VIII are  exclusive  and in lieu
of any and all other rights and  remedies  which Seller and Buyer may have under
this Agreement or otherwise for monetary relief,  with respect to (i) any breach
of or failure to perform any covenant,  agreement, or representation or warranty
set forth in this  Agreement,  after the occurrence of the Closing,  or (ii) the
Assumed Liabilities and Obligations or the Excluded Liabilities, as the case may
be. The  indemnification  obligations  of the Parties set forth in this  Article
VIII  apply  only to  matters  arising  out of  this  Agreement,  excluding  the
Ancillary  Agreements.  Any  Indemnifiable  Loss arising under or pursuant to an
Ancillary  Agreement shall be governed by the  indemnification  obligations,  if
any,  contained in the Ancillary  Agreement under which the  Indemnifiable  Loss
arises.

     (f) Notwithstanding anything to the contrary herein, no Party (including an
Indemnitee)  shall be entitled to recover  from the other  Party  (including  an
Indemnifying Party) for any liabilities, damages, obligations, payments, losses,
costs or  expenses  under  this  Agreement  any  amount in excess of the  actual
compensatory  damages,  court costs and reasonable  attorney's and other advisor
fees  suffered  by such  Party.  Buyer and  Seller  waive  any right to  recover
punitive,  incidental,  special,  exemplary and consequential damages arising in
connection  with or with  respect  to this  Agreement.  The  provisions  of this
Section 8.1(f) shall not apply to indemnification for a Third Party Claim.

     8.2 Defense of Claims.

     (a) If any Indemnitee  receives  notice of the assertion of any claim or of
the  commencement  of any  claim,  action or  proceeding  made or brought by any
Person who is not a Party to this  Agreement or any Affiliate of a Party to this
Agreement (a "Third Party Claim") with respect to which indemnification is to be
sought from an Indemnifying  Party, the Indemnitee shall give such  Indemnifying
Party  reasonably  prompt written notice  thereof,  but in any event such notice
shall not be given later than twenty (20) calendar  days after the  Indemnitee's
receipt of notice of such Third Party  Claim.  Such notice  shall  describe  the
nature of the Third  Party Claim in  reasonable  detail and shall  indicate  the
estimated amount, if practicable, of the Indemnifiable Loss that has been or may
be sustained by the Indemnitee.  The  Indemnifying  Party will have the right to
participate  in or, by giving  written  notice  to the  Indemnitee,  to elect to
assume the defense of any Third Party Claim at such Indemnifying Party's expense
and by such Indemnifying Party's own counsel,  provided that the counsel for the
Indemnifying Party who shall conduct the defense of such Third Party Claim shall
be reasonably satisfactory to the Indemnitee.  The Indemnitee shall cooperate in

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good faith in such defense at such Indemnitee's own expense.  If an Indemnifying
Party elects not to assume the defense of any Third Party Claim,  the Indemnitee
may  compromise  or settle  such Third  Party  Claim over the  objection  of the
Indemnifying Party, which settlement or compromise shall conclusively  establish
the Indemnifying Party's liability pursuant to this Agreement.

     (b) (i) If, within  twenty (20) calendar days after an Indemnitee  provides
written  notice  to the  Indemnifying  Party  of any  Third  Party  Claims,  the
Indemnitee  receives  written  notice  from the  Indemnifying  Party  that  such
Indemnifying  Party has  elected to assume the defense of such Third Party Claim
as provided in Section  8.2(a) , the  Indemnifying  Party will not be liable for
any legal expenses  subsequently  incurred by the Indemnitee in connection  with
the defense thereof;  provided,  however,  that if the Indemnifying  Party shall
fail to take reasonable  steps  necessary to defend  diligently such Third Party
Claim  within  twenty  (20)  calendar  days  after  receiving  notice  from  the
Indemnitee  that the Indemnitee  believes the  Indemnifying  Party has failed to
take such steps,  the Indemnitee may assume its own defense and the Indemnifying
Party shall be liable for all reasonable expenses thereof.

     (ii) Without the prior written consent of the Indemnitee,  the Indemnifying
Party shall not enter into any  settlement  of any Third Party Claim which would
lead to liability or create any financial or other obligation on the part of the
Indemnitee  for  which  the  Indemnitee  is  not  entitled  to   indemnification
hereunder. If a firm offer is made to settle a Third Party Claim without leading
to liability or the creation of a financial or other  obligation  on the part of
the  Indemnitee  for which the  Indemnitee  is not  entitled to  indemnification
hereunder and the Indemnifying  Party desires to accept and agree to such offer,
the  Indemnifying  Party shall give  written  notice to the  Indemnitee  to that
effect. If the Indemnitee fails to consent to such firm offer within twenty (20)
calendar days after its receipt of such notice,  the Indemnifying Party shall be
relieved of its  obligations to defend such Third Party Claim and the Indemnitee
may  contest or defend  such Third  Party  Claim.  In such  event,  the  maximum
liability  of the  Indemnifying  Party as to such Third  Party Claim will be the
amount of such  settlement  offer plus  reasonable  costs and  expenses  paid or
incurred by Indemnitee up to the date of such notice.

     (c) Any claim by an  Indemnitee on account of an  Indemnifiable  Loss which
does not result from a Third Party Claim (a "Direct Claim") shall be asserted by
giving the Indemnifying Party reasonably prompt written notice thereof,  stating
the  nature of such claim in  reasonable  detail and  indicating  the  estimated
amount,  if  practicable,  but in any event such notice shall not be given later
than twenty (20) calendar days after the Indemnitee becomes aware of such Direct
Claim,  and the  Indemnifying  Party shall have a period of twenty (20) calendar
days within which to respond to such Direct  Claim.  If the  Indemnifying  Party
does not respond within such twenty (20) calendar day period,  the  Indemnifying

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Party shall be deemed to have accepted  such claim.  If the  Indemnifying  Party
rejects such claim, the Indemnitee will be free to seek enforcement of its right
to indemnification under this Agreement.

     (d) If the amount of any Indemnifiable  Loss, at any time subsequent to the
making of an  indemnity  payment in  respect  thereof,  is reduced by  recovery,
settlement or otherwise under or pursuant to any insurance coverage, or pursuant
to any claim,  recovery,  settlement  or payment  by,  from or against any other
entity,  the amount of such  reduction,  less any costs,  expenses  or  premiums
incurred in connection  therewith  (together with interest thereon from the date
of payment  thereof to the date or repayment at the "prime rate" as published in
The Wall  Street  Journal)  shall  promptly be repaid by the  Indemnitee  to the
Indemnifying Party.

     (e) A failure to give timely  notice as provided in this  Section 8.2 shall
not affect the rights or obligations of any Party hereunder  except if, and only
to the extent that, as a result of such failure, the Party which was entitled to
receive such notice was actually prejudiced as a result of such failure.

     8.3 Waiver and Release.  To the extent any right, cause of action, or claim
hereunder  constitutes Assumed  Liabilities and Obligations,  and subject to any
indemnification  rights  of  Buyer  under  Section  8.1(b),  the  Buyer  waives,
relinquishes  and forgives,  effective as of the Closing Date,  any statutory or
common law rights that otherwise would relate to such right,  cause of action or
claim, including, without limitation, CERLCA.


                                   ARTICLE IX

                                  TERMINATION

     9.1 Termination.  (a) This Agreement may be terminated at any time prior to
the Closing Date by mutual written consent of Seller and Buyer.

     (b) This Agreement may be terminated by Seller or Buyer, if (i) any federal
or state court of competent jurisdiction shall have issued an order, judgment or
decree permanently restraining,  enjoining or otherwise prohibiting the Closing,
and such order, judgment or decree shall have become final and nonappealable; or
(ii) any statute, rule, order or regulation shall have been enacted or issued by
any  Governmental  Authority  which,  directly  or  indirectly,   prohibits  the
consummation of the Closing; or (iii) the Closing contemplated hereby shall have
not occurred on or before the day which is eighteen (18) months from the date of
this Agreement (the "Termination Date");  provided,  however,  that the right to
terminate this Agreement  under this Section 9.1(b) (iii) shall not be available

                                      234
<PAGE>

to any Party whose failure to fulfill any  obligation  under this  Agreement has
been the cause of, or  resulted  in, the  failure of the  Closing to occur on or
before such date.

     (c) Except as otherwise  provided in this Agreement,  this Agreement may be
terminated by Buyer if (i) any of Buyer's  Required  Regulatory  Approvals,  the
receipt of which is a condition to Closing as set forth in Section 7.1(c), shall
have been denied (and a petition  for  rehearing  or refiling of an  application
initially  denied without  prejudice  shall also have been denied) or shall have
been granted but such Approval  contains  conditions  (other than the conditions
accepted by Buyer in Section 6.18) that would have a material  adverse effect on
the operations or condition  (financial or otherwise) of the Purchased Assets or
a material  adverse  effect on the  business,  assets,  operations  or condition
(financial or otherwise) of Buyer or its members; or (ii) the receipt of the IRS
rulings or opinions of counsel,  which is a condition to Closing as set forth in
Section  7.1(k),  shall not have been  satisfied or waived by Buyer on or before
May 30, 2000.

     (d) This  Agreement  may be  terminated  by Seller,  if (i) any of Seller's
Required  Regulatory  Approvals  applicable to Seller, the receipt of which is a
condition to the  obligation of Seller to consummate the Closing as set forth in
Section 7.2(c), shall have been denied (and a petition for rehearing or refiling
of an  application  initially  denied  without  prejudice  shall  also have been
denied) or shall have been granted but such Approval  contains  conditions  that
would have a material  adverse  effect on the  business,  assets,  operations or
condition  (financial  or otherwise)  of Seller or its  Affiliates;  or (ii) the
receipt of the IRS  rulings or opinions  of  counsel,  which is a  condition  to
Closing as set forth in Section 7.2(l),  shall not have been satisfied or waived
by Seller on or before May 30, 2000.

     (e) This Agreement may be terminated by Buyer if there has been a violation
or breach by Seller of any  covenant,  representation  or warranty  contained in
this  Agreement  which  has  resulted  in a  Material  Adverse  Effect  and such
violation  or breach is not cured by the earlier of the Closing Date or the date
thirty  (30)  days  after  receipt  by  Seller  of  written  notice   specifying
particularly such violation or breach, and such violation or breach has not been
waived by Buyer.

     (f) This Agreement may be terminated by Seller if there has been a material
violation  or  breach  by  Buyer of any  covenant,  representation  or  warranty
contained  in this  Agreement  and such  violation or breach is not cured by the
earlier of the Closing Date or the date thirty (30) days after  receipt by Buyer
of written notice  specifying  particularly  such violation or breach,  and such
violation or breach has not been waived by Seller.

                                      235
<PAGE>

     (g) This Agreement may be terminated by Buyer or Seller in accordance  with
the provisions of Sections 6.11(b) or (c).

     9.2  Procedure  and  Effect  of  No-Default  Termination.  In the  event of
termination of this Agreement by either or both of the Parties  pursuant to this
Article 9, written  notice thereof shall  forthwith be given by the  terminating
Party to the other Party, whereupon, if this Agreement is terminated pursuant to
any of Sections  9.1(a) through (d) and 9.1(g),  the  liabilities of the Parties
hereunder  will  terminate,  except  as  otherwise  expressly  provided  in this
Agreement,  and  thereafter  neither  Party shall have any recourse  against the
other by reason of this Agreement.


                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

     10.1 Amendment and Modification.  Subject to applicable law, this Agreement
may be amended, modified or supplemented only by written agreement of Seller and
Buyer.

     10.2 Waiver of Compliance;  Consents.  Except as otherwise provided in this
Agreement,  any  failure of any of the  Parties to comply  with any  obligation,
covenant,  agreement or condition  herein may be waived by the Party entitled to
the benefits thereof only by a written  instrument  signed by the Party granting
such  waiver,  but  such  waiver  of such  obligation,  covenant,  agreement  or
condition  shall not  operate as a waiver of, or estoppel  with  respect to, any
subsequent failure to comply therewith.

     10.3 Survival of Representations, Warranties, Covenants and Obligations.

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<PAGE>

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     (b) The  covenants  and  obligations  of Seller and Buyer set forth in this
Agreement, including, without limitation, the indemnification obligations of the
Parties  under  Article  VIII  hereof,  shall  survive the Closing  indefinitely
(unless a shorter period is specified herein), and the Parties shall be entitled
to the full performance  thereof by the other Parties hereto without  limitation
as to time or amount (except as otherwise specifically set forth herein).

     10.4 Notices.  All notices and other  communications  hereunder shall be in
writing  and shall be  deemed  given if  delivered  personally  or by  facsimile
transmission,  or mailed by overnight  courier or registered  or certified  mail
(return  receipt  requested),  postage  prepaid,  to the recipient  Party at its
address (or at such other  address or  facsimile  number for a Party as shall be
specified by like notice;  provided however, that notices of a change of address
shall be effective only upon receipt thereof):

        (a) If to Seller, to:

        Illinois Power Company
        500 South 27th Street
        Decatur, IL  62521
        Fax No.:  217-362-7417
        Attention: David W. Butts
        Senior Vice President


        with a copy to:

        Troutman Sanders LLP
        1300 "I" Street, N.W.
        Suite 500 East
        Washington, D.C.  20004
        Fax No.: 404-962-6731
        Attention: Kevin C. Fitzgerald, Esquire

                                      237
<PAGE>

        (b) if to Buyer, to:

        AmerGen Energy Company, LLC
        2301 Market Street
        P.O. Box 8699
        Philadelphia, PA  19101
        Fax No.: 610-640-7566
        Attention:  Dickinson M. Smith, Chief Executive Officer

        with a copy to:

        Morgan, Lewis & Bockius LLP
        1701 Market Street
        Philadelphia, PA  19103
        Fax No.: 215-963-5299
        Attention: Howard L. Meyers, Esq.

     10.5 Assignment.  This Agreement and all of the provisions  hereof shall be
binding upon and inure to the benefit of the Parties hereto and their respective
successors  and  permitted  assigns,  but neither this  Agreement nor any of the
rights,  interests or  obligations  hereunder  shall be assigned by either Party
hereto,  including by operation of law, without the prior written consent of the
other Party, such consent not to be unreasonably withheld, nor is this Agreement
intended to confer upon any other Person  except the Parties  hereto any rights,
interests,  obligations  or remedies  hereunder.  No provision of this Agreement
shall  create  any third  party  beneficiary  rights in any  employee  or former
employee of Seller  (including any beneficiary or dependent  thereof) in respect
of  continued  employment  or  resumed  employment,  and no  provision  of  this
Agreement shall create any rights in any such Persons in respect of any benefits
that may be provided, directly or indirectly, under any employee benefit plan or
arrangement  except as expressly  provided for thereunder.  Notwithstanding  the
foregoing,  but subject to all applicable  legal  requirements,  and provided it
does not materially  adversely  affect any regulatory  approvals  required under
this Agreement, (a) Buyer or its permitted assignee may assign, transfer, pledge
or otherwise  dispose of  (absolutely  or as security)  its rights and interests
hereunder to a trustee,  lending  institution or other party for the purposes of
leasing,  financing or  refinancing  the  Purchased  Assets,  including  such an
assignment,  transfer or other  disposition  upon or pursuant to the exercise of
remedies with respect to such leasing,  financing or  refinancing,  or by way of
assignments,  transfers,  pledges,  or other  dispositions in lieu thereof,  (b)
Buyer or its  permitted  assignee  may  assign,  transfer,  pledge or  otherwise
dispose of (absolutely  or as security) its rights and interests  hereunder to a
wholly-owned  subsidiary of Buyer (provided that the assignee agrees to be bound
by the terms and conditions hereof), and (c) Buyer or its permitted assignee may

                                      238
<PAGE>

assign,  transfer,  pledge or otherwise  dispose of its rights and  interests to
cause Seller to perform in accordance with the provisions of Section 6.12 hereof
in connection with any subsequent  disposition by Buyer of the Purchased Assets;
provided, however, that no such assignment shall relieve or discharge Buyer from
any of its obligations hereunder.  Seller agrees, at Buyer's expense, to execute
and deliver such documents as may be reasonably necessary to accomplish any such
assignment,  transfer,  pledge  or other  disposition  of rights  and  interests
hereunder  so long as  Seller's  rights  under this  Agreement  are not  thereby
altered, amended, diminished or otherwise impaired.

     10.6 Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the law of the  State of  Illinois  (without  giving  effect to
conflict of law principles) as to all matters,  including,  without  limitation,
matters of validity, construction, effect, performance and remedies. THE PARTIES
HERETO  AGREE THAT VENUE IN ANY AND ALL ACTIONS AND  PROCEEDINGS  RELATED TO THE
SUBJECT MATTER OF THIS AGREEMENT SHALL BE IN THE STATE AND FEDERAL COURTS IN AND
FOR COOK COUNTY,  ILLINOIS,  WHICH COURTS SHALL HAVE EXCLUSIVE  JURISDICTION FOR
SUCH  PURPOSE,  AND THE  PARTIES  HERETO  IRREVOCABLY  SUBMIT  TO THE  EXCLUSIVE
JURISDICTION OF SUCH COURTS AND IRREVOCABLY WAIVE THE DEFENSE OF AN INCONVENIENT
FORUM TO THE  MAINTENANCE OF ANY SUCH ACTION OR  PROCEEDING.  SERVICE OF PROCESS
MAY BE MADE IN ANY MANNER RECOGNIZED BY SUCH COURTS.  EACH OF THE PARTIES HERETO
IRREVOCABLY WAIVES ITS RIGHT TO A JURY TRIAL WITH RESPECT TO ANY ACTION OR CLAIM
ARISING OUT OF ANY DISPUTE IN CONNECTION WITH THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY.

     10.7  Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

     10.8 Interpretation.  The articles, section and schedule headings contained
in this  Agreement are solely for the purpose of reference,  are not part of the
agreement  of the  Parties  and  shall  not in any way  affect  the  meaning  or
interpretation of this Agreement.

     10.9  Schedules  and  Exhibits.   Except  as  otherwise  provided  in  this
Agreement,  all Exhibits and Schedules referred to herein are intended to be and
hereby are specifically made a part of this Agreement.

                                      239
<PAGE>

     10.10 Entire Agreement.  This Agreement, the Confidentiality  Agreement and
the  Ancillary  Agreements,   including  the  Exhibits,  Schedules,   documents,
certificates  and instruments  referred to herein or therein,  embody the entire
agreement and understanding of the Parties hereto in respect of the transactions
contemplated  by  this  Agreement  and  supersedes  all  prior   agreements  and
understandings  between the Parties (other than the  Confidentiality  Agreement,
the Management Agreement and the Leased Employee Agreement) with respect to such
transactions. There are no restrictions, promises, representations,  warranties,
covenants or  undertakings,  other than those expressly set forth or referred to
herein or therein.  It is  expressly  acknowledged  and agreed that there are no
restrictions,  promises, representations,  warranties, covenants or undertakings
contained in any material made  available to Buyer  pursuant to the terms of the
Confidentiality  Agreement.  This Agreement  supersedes all prior agreements and
understandings between the Parties (including,  without limitation,  the Interim
Agreement)  other  than  the  Confidentiality  Agreement  with  respect  to such
transactions, the Management Agreement and the Leased Employee Agreement.

     10.11 Bulk Sales Laws. Buyer acknowledges that, notwithstanding anything in
this Agreement to the contrary, Seller will not comply with the provision of the
bulk  sales  laws  of any  jurisdiction  in  connection  with  the  transactions
contemplated  by this Agreement.  Buyer hereby waives  compliance by Seller with
the provisions of the bulk sales laws of all applicable jurisdictions.

                                      240
<PAGE>

REDACTED AREAS IN THIS DOCUMENT CONTAIN CONFIDENTIAL MATERIAL WITHHELD
FROM PUBLIC DISCLOSURE PURSUANT TO 220 ILCS 5/4-404 AND 5-108.






     IN WITNESS  WHEREOF,  Seller and Buyer have  caused  this  Agreement  to be
signed by their  respective duly authorized  officers as of the date first above
written.





ILLINOIS POWER COMPANY                           AMERGEN ENERGY COMPANY, L.L.C.



By:__________________________                    By:____________________________
Name:                                            Name:
Title:                                           Title:

                                      241
<PAGE>



<TABLE>
<CAPTION>
                                                                                                 Exhibit 12.1
                                                        ILLINOVA CORPORATION
                                          STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO
                                                            FIXED CHARGES

                                                                         Twelve                         Six
                                                                       Months Ended                 Months Ended
                                                                          June                          June
(Thousands of Dollars)                                                  As Restated
                                                                  1999           1999 **                1999
                                                              ---------------------------           ------------

Earnings Available for Fixed Charges:
<S>                                                           <C>             <C>                      <C>
Net Income (Loss)                                             ($1,509,967)    ($1,509,967)             $35,627
    Add:
      Income Taxes:
         Current                                                  (25,335)        (25,335)              (6,582)
         Deferred - Net                                            62,629          62,629               44,071
      Allocated income taxes                                      (18,754)        (18,754)             (14,798)
      Investment tax credit - deferred                             (5,539)         (5,539)                (729)
      Income tax effect of CPS impairment                      (1,143,252)     (1,143,252)                  -
      Equity (Earnings) Loss in Subs                              (17,473)        (17,473)              (3,413)
      Interest on long-term debt                                  123,030         123,030               63,375
      Amortization of debt expense and
         premium-net, and other interest charges                   40,348          40,348               26,512
      One-third of all rentals (Estimated to be
         representative of the interest component)                  3,790           3,790                1,749
      Interest on in-core fuel                                      5,223           5,223                3,274
      CPS Impairment                                                   -        2,666,909                   -
                                                              -----------      ----------             --------
Earnings (loss) available for fixed charges                   ($2,485,300)       $181,609             $149,086
                                                              ===========      ==========             ========

Fixed charges:
    Interest on long-term debt                                   $123,030        $123,030              $63,375
    Amortization of debt expense and
      premium-net, and other interest charges                      48,922          48,922               29,184
    One-third of all rentals (Estimated to be
      representative of the interest component)                     3,790           3,790                1,749
    Preferred stock dividend requirements                          32,455          32,455               16,066
                                                              -----------      ----------             --------

Total Fixed Charges                                              $208,197        $208,197             $110,374
                                                              ===========      ==========             ========

Ratio of earnings to fixed charges                                     - *             -                  1.35
                                                              ===========      ==========             ========



  *  Earnings are inadequate to cover fixed charges.  Additional earnings (thousands)  $2,693,497 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 Clinton Impairment.
     Additional earnings (thousands) of $26,858 are required to attain a one-to-one ratio of Earnings to Fixed Charges.

                                      242
<PAGE>

</TABLE>


<TABLE>
<CAPTION>
                                                                                                 Exhibit 12.2
                                                      ILLINOIS POWER COMPANY
                                         STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO
                                                           FIXED CHARGES

                                                                        Twelve                      Six
                                                                     Months Ended                Months Ended
                                                                         June                       June
                                                                     As Restated
(Thousands of Dollars)                                            1999          1999 **             1999
                                                             ---------------------------           -------
Earnings Available for Fixed Charges:
<S>                                                          <C>             <C>                   <C>
Net Income (Loss)                                            ($1,499,167)    ($1,499,167)          $43,049
    Add:
     Income Taxes:
         Current                                                 (25,335)        (25,335)           (6,582)
         Deferred - Net                                           62,629          62,629            44,071
     Allocated income taxes                                      (10,617)        (10,617)           (8,962)
     Investment tax credit - deferred                             (5,539)         (5,539)             (729)
     Income tax effect of CPS impairment                      (1,143,252)     (1,143,252)               -
     Interest on long-term debt                                  112,484         112,484            58,250
     Amortization of debt expense and
         premium-net, and other interest charges                  38,744          38,744            25,379
     One-third of all rentals (Estimated to be
         representative of the interest component)                 3,790           3,790             1,749
     Interest on in-core fuel                                      5,223           5,223             3,274
     CPS Impairment                                                   -        2,666,909                -
                                                             ------------    -----------         ---------
Earnings (loss) available for fixed charges                  ($2,461,040)       $205,869         $159,499
                                                             ============    ===========         =========

Fixed charges:
    Interest on long-term debt                                  $112,484        $112,484           $58,250
    Amortization of debt expense and
     premium-net, and other interest charges                      47,319          47,319            28,050
    One-third of all rentals (Estimated to be
     representative of the interest component)                     3,790           3,790             1,749
    Preferred stock dividend requirement                          31,714          31,714            15,325
                                                             ------------    -----------         ---------

Total Fixed Charges                                             $195,307        $195,307          $103,374
                                                             ============    ===========         =========

Ratio of earnings to fixed charges                                    -  *          1.05              1.54
                                                             ============    ===========         =========



  * Earnings are inadequate to cover fixed charges.  Additional earnings (thousands) of  $2,656,347  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 Clinton Impairment.

                                      243
<PAGE>

</TABLE>

<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>
<CIK>                                         0000049816
<NAME>                                        Illinois Power Company
<SUBSIDIARY>
   <NUMBER>                                   0
   <NAME>                                     0
<MULTIPLIER>                                   1,000,000
<CURRENCY>                                     Default

<S>                             <C>
<PERIOD-TYPE>                   6-mos
<FISCAL-YEAR-END>                              Dec-31-1999
<PERIOD-START>                                 Jan-01-1999
<PERIOD-END>                                   Jun-30-1999
<EXCHANGE-RATE>                                1
<BOOK-VALUE>                                   Per-Book
<TOTAL-NET-UTILITY-PLANT>                      4537
<OTHER-PROPERTY-AND-INVEST>                    3
<TOTAL-CURRENT-ASSETS>                         402
<TOTAL-DEFERRED-CHARGES>                       771
<OTHER-ASSETS>                                 0
<TOTAL-ASSETS>                                 5713
<COMMON>                                       893
<CAPITAL-SURPLUS-PAID-IN>                      0
<RETAINED-EARNINGS>                            16
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 909
                          194
                                    50
<LONG-TERM-DEBT-NET>                           2084
<SHORT-TERM-NOTES>                             80
<LONG-TERM-NOTES-PAYABLE>                      0
<COMMERCIAL-PAPER-OBLIGATIONS>                 0
<LONG-TERM-DEBT-CURRENT-PORT>                  272
                      0
<CAPITAL-LEASE-OBLIGATIONS>                    53
<LEASES-CURRENT>                               16
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 2055
<TOT-CAPITALIZATION-AND-LIAB>                  5713
<GROSS-OPERATING-REVENUE>                      850
<INCOME-TAX-EXPENSE>                           37
<OTHER-OPERATING-EXPENSES>                     707
<TOTAL-OPERATING-EXPENSES>                     744
<OPERATING-INCOME-LOSS>                        106
<OTHER-INCOME-NET>                             18
<INCOME-BEFORE-INTEREST-EXPEN>                 124
<TOTAL-INTEREST-EXPENSE>                       81
<NET-INCOME>                                   43
                    9
<EARNINGS-AVAILABLE-FOR-COMM>                  34
<COMMON-STOCK-DIVIDENDS>                       19
<TOTAL-INTEREST-ON-BONDS>                      55
<CASH-FLOW-OPERATIONS>                         38
<EPS-BASIC>                                  0
<EPS-DILUTED>                                  0



</TABLE>


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