EXELON CORP
8-K/A, 2000-11-15
ELECTRIC & OTHER SERVICES COMBINED
Previous: EXELON CORP, 8-K, EX-99, 2000-11-15
Next: PIONEER LARGE CAP GROWTH FUND, N-1A/A, 2000-11-15




===============================================================================


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                   FORM 8-K/A


                                 CURRENT REPORT

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


Date of Report (Date of earliest event reported):  October 20, 2000


                               EXELON CORPORATION
             (Exact name of registrant as specified in its charter)


  PENNSYLVANIA                         1-16169             23-2990190
(State or other jurisdiction  (Commission File Number)    (IRS Employer
      of incorporation)                                    Identification No.)


                          37th Floor, 10 South Dearborn
                             Post Office Box A-3005
                          Chicago, Illinois 60690-3005
                    (address of principal executive offices)


Registrant's telephone number, including area code:  (312) 394-4321

                                       N/A

          (Former name or former address, if changed since last report)

===============================================================================




<PAGE>



ITEM 2. ACQUISITION OR DISPOSITION OF ASSETS.

     On October 20, 2000,  pursuant to a Second  Amended and Restated  Agreement
and Plan of Exchange and Merger  dated as of  September  22, 1999 as amended and
restated  as of October 10,  2000,  among PECO Energy  Company,  a  Pennsylvania
corporation  ("PECO Energy"),  Exelon  Corporation,  a Pennsylvania  corporation
("Exelon") and Unicom  Corporation,  an Illinois  corporation  ("Unicom"),  PECO
Energy, Exelon and Unicom consummated the merger and exchange as described below
(the "Merger and Exchange").

     The Merger and  Exchange  involved two  transactions.  The first step was a
share  exchange  between  PECO Energy and its wholly  owned  subsidiary  Exelon,
pursuant to which PECO Energy became a wholly owned  subsidiary  of Exelon.  The
second  step was a merger of Unicom  into  Exelon,  pursuant  to which  Unicom's
separate corporate existence ended and its subsidiaries,  including Commonwealth
Edison Company, became subsidiaries of Exelon.

     In the first step exchange,  each  outstanding  share of PECO Energy common
stock  (other  than  shares  owned  by PECO  Energy,  which  were  automatically
canceled)  was  automatically  converted  into the right to receive one share of
Exelon  common  stock and all shares of Exelon  common stock held by PECO Energy
were automatically canceled.

     At the  completion  of the  second  step  merger,  which  occurred  shortly
following the completion of the first step exchange,  Unicom was merged with and
into Exelon,  and each share of Unicom  common stock (other than shares owned by
Unicom or Exelon, which were automatically canceled) was automatically converted
into the right to receive 0.875 shares of Exelon common stock and $3.00 in cash.

     A copy of the press  release  issued by Exelon  on  October  20,  2000 with
respect to the  effectiveness  of the exchange and merger is attached  hereto as
Exhibit 99.1 and is incorporated herein by reference.

     On October  13,  2000,  Exelon  established  a $1.25  billion  bank  credit
facility (the "Credit Facility") pursuant to the Term Loan Agreement dated as of
October 13, 2000 among Exelon,  the banks listed on the signature pages thereof,
Bank One,  N.A.,  as  Administrative  Agent,  Credit  Suisse  First  Boston,  as
Documentation  Agent,  and  Citibank,  N.A., as  Syndication  Agent (the "Credit
Agreement"). Approximately $510,000,000 of the Credit Facility is being borrowed
to finance the cash  consideration to be paid to former holders of Unicom common
stock in the second step merger.  It is anticipated that borrowings will be made
under the remaining Credit Facility as needed.

     A copy of the Credit  Agreement  is attached  hereto as Exhibit 99.2 and is
incorporated herein by reference.














<PAGE>

ITEM 7.

(a)  Financial statements of businesses acquired:


                               UNICOM CORPORATION

                              FINANCIAL STATEMENTS

         For the Three, Nine and Twelve Months Ended September 30, 2000


<PAGE>

                              Unicom Corporation

      Quarterly Report for the Quarterly Period Ended September 30, 2000

  This document contains a Quarterly Report for the quarterly period ended
September 30, 2000 for Unicom Corporation. In addition, several portions of
this Quarterly Reports contain forward-looking statements; and reference is
made to pages 58-59 for the location and character of such statements.

                                     INDEX
<TABLE>
<CAPTION>
                                                                          Page
                                                                          -----
<S>                                                                       <C>
Definitions..............................................................     3
PART I. FINANCIAL INFORMATION
Unicom Corporation and Subsidiary Companies:
  Financial Statements--
    Report of Independent Public Accountants.............................     4
    Statements of Consolidated Operations for the three months, nine
     months and twelve months ended September 30, 2000 and 1999..........     5
    Consolidated Balance Sheets--September 30, 2000 and December 31,
     1999................................................................   6-7
    Statements of Consolidated Capitalization--September 30, 2000 and
     December 31, 1999 ..................................................     8
    Statements of Consolidated Retained Earnings for the three months,
     nine months and twelve months ended September 30, 2000 and 1999.....     9
    Statements of Consolidated Comprehensive Income for the three months,
     nine months and twelve months ended September 30, 2000 and 1999.....     9
    Statements of Consolidated Cash Flows for the three months, nine
     months and twelve months ended September 30, 2000 and 1999..........    10
    Notes to Financial Statements........................................ 11-41
  Management's Discussion and Analysis of Financial Condition and Results
   of Operations......................................................... 42-59
PART II. OTHER INFORMATION
  Item 1. Legal Proceedings..............................................    60
</TABLE>


<PAGE>
                                  DEFINITIONS

  The following terms are used in this document with the following meanings:
<TABLE>
<CAPTION>
          Term                                  Meaning
 ---------------------- -------------------------------------------------------
 <C>                    <S>
 1997 Act               Illinois Electric Service Customer Choice and Rate
                         Relief Law of 1997, as amended
 AFUDC                  Allowance for funds used during construction
 APB                    Accounting Principles Board
 APX                    Automated Power Exchange Inc., a California company
 CERCLA                 Comprehensive Environmental Response, Compensation and
                         Liability Act of 1980, as amended
 City                   City of Chicago
 ComEd                  Commonwealth Edison Company, an Exelon subsidiary
 ComEd Funding          ComEd Funding, LLC, a ComEd subsidiary
 ComEd Funding Trust    ComEd Transitional Funding Trust, a ComEd Funding
                         subsidiary
 Cotter                 Cotter Corporation, formerly a ComEd subsidiary
 CTC                    Non-bypassable "competitive transition charge"
 DOE                    U.S. Department of Energy
 Edison Development     Edison Development Canada Inc., a ComEd subsidiary
 EME                    Edison Mission Energy, an Edison International
                         subsidiary
 EPS                    Earnings/(Loss) per Common Share
 ESPP                   Employee Stock Purchase Plan
 FASB                   Financial Accounting Standards Board
 FERC                   Federal Energy Regulatory Commission
 Fossil Plant           ComEd's former six coal-fired generating plants, an oil
                         and gas-fired plant, and nine peaking unit sites
 GAAP                   Generally Accepted Accounting Principles
 ICC                    Illinois Commerce Commission
 IDR                    Illinois Department of Revenue
 Indiana Company        Commonwealth Edison Company of Indiana, Inc., a ComEd
                         subsidiary
 INPO                   Institute of Nuclear Power Operations
 ISO                    Independent System Operator
 MGP                    Manufactured gas plant
 NEIL                   Nuclear Electric Insurance Limited
 Northwind Chicago      Northwind Chicago, LLC, a UT Holdings subsidiary
 Northwind Midway       Northwind Midway, LLC, a UT Holdings subsidiary
 NRC                    Nuclear Regulatory Commission
 O&M                    Operation and maintenance
 PECO                   PECO Energy Company, a Pennsylvania company
 PPAs                   Purchase Power Agreements
 RES                    Retail Electric Supplier
 RTO                    Regional Transmission Organization
 SEC                    Securities and Exchange Commission
 SFAS                   Statement of Financial Accounting Standards
 SPEs                   Special purpose entities
 S&P                    Standard & Poor's
 Trusts                 ComEd Financing I and ComEd Financing II, ComEd
                         subsidiaries
 Trust Securities       ComEd-obligated mandatorily redeemable preferred
                         securities of subsidiary trusts holding solely ComEd's
                         subordinated debt securities
 Unicom                 Unicom Corporation
 Unicom Energy Services Unicom Energy Services Inc., a Unicom Enterprises
                         subsidiary
 Unicom Enterprises     Unicom Enterprises Inc., a Unicom subsidiary
 Unicom Investment      Unicom Investment, Inc., a Unicom subsidiary
 Unicom Power Holdings  Unicom Power Holdings Inc., a Unicom Enterprises
                         subsidiary
 Unicom Thermal         Unicom Thermal Technologies Inc., a UT Holdings
                         subsidiary
 U.S. EPA               U.S. Environmental Protection Agency
 UT Holdings            UT Holdings Inc., a Unicom Enterprises subsidiary
</TABLE>


<PAGE>
Part I.   Financial Information


                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Shareholders of Unicom Corporation:

  We have audited the accompanying consolidated balance sheets and statements
of consolidated capitalization of UNICOM CORPORATION (an Illinois corporation)
and subsidiary companies as of September 30, 2000 and December 31, 1999, and
the related statements of consolidated operations, retained earnings,
comprehensive income and cash flows for the three-month, nine-month and
twelve-month periods ended September 30, 2000 and 1999. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

  We conducted our audits in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on
a test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used
and significant estimates made by management, as well as evaluating the
overall financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

  In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Unicom
Corporation and subsidiary companies as of September 30, 2000 and December 31,
1999, and the results of their operations and their cash flows for the three-
month, nine-month and twelve-month periods ended September 30, 2000 and 1999,
in conformity with accounting principles generally accepted in the United
States.




                                             Arthur Andersen LLP

Chicago, Illinois
November 3, 2000


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                     STATEMENTS OF CONSOLIDATED OPERATIONS

  The following Statements of Consolidated Operations for the three months,
nine months and twelve months ended September 30, 2000 and 1999 reflect the
results of past operations and are not intended as any representation as to
results of operations for any future period. Future operations will
necessarily be affected by various and diverse factors and developments,
including changes in electric prices, regulation, population, business
activity, asset dispositions, competition, taxes, environmental control,
energy use, fuel, cost of labor, purchased power and other matters, the nature
and effect of which cannot now be determined.

<TABLE>
<CAPTION>
                           Three Months Ended       Nine Months Ended      Twelve Months Ended
                              September 30            September 30            September 30
                          ----------------------  ----------------------  ----------------------
                             2000        1999        2000        1999        2000        1999
                          ----------  ----------  ----------  ----------  ----------  ----------
                                          (Thousands Except Per Share Data)
<S>                       <C>         <C>         <C>         <C>         <C>         <C>
Operating Revenues......  $2,220,289  $2,084,454  $5,685,671  $5,307,972  $7,225,646  $6,871,640
                          ----------  ----------  ----------  ----------  ----------  ----------
Operating Expenses and
 Taxes:
  Fuel..................  $   97,207  $  302,181  $  294,046  $  796,654  $  494,654  $1,049,699
  Purchased power.......     735,894     249,375   1,410,881     419,358   1,544,823     520,987
  Operation and
   maintenance..........     654,518     581,937   1,749,008   1,787,435   2,387,446   2,369,062
  Depreciation and
   amortization.........     230,214     202,109     831,859     700,388     974,719     929,731
  Taxes (except
   income)..............     138,610     144,791     406,357     407,286     507,525     535,247
  Income taxes..........      45,771     181,654     138,073     305,265     192,007     354,131
  Investment tax credits
   deferred--net .......      (5,499)     (7,021)   (16,498)     (21,063)   (21,263)     (27,856)
                          ----------  ----------  ----------  ----------  ----------  ----------
                          $1,896,715  $1,655,026  $4,813,726  $4,395,323  $6,079,911  $5,731,001
                          ----------  ----------  ----------  ----------  ----------  ----------
Operating Income........  $  323,574  $  429,428  $  871,945  $  912,649  $1,145,735  $1,140,639
                          ----------  ----------  ----------  ----------  ----------  ----------
Other Income and
 (Deductions):
  Interest on long-term
   debt, net of interest
   capitalized..........  $ (133,837) $ (134,622) $ (398,058) $ (413,132) $ (529,888) $ (522,526)
  Interest on notes
   payable..............      (7,538)     (5,282)    (13,709)    (13,003)    (19,308)    (17,377)
  Allowance for funds
   used during
   construction.........       5,599       6,581      16,610      15,982      22,440      20,121
  Income taxes
   applicable to
   nonoperating
   activities...........     (23,196)      2,080     (44,614)     (1,169)    (16,362)    (17,418)
  Provisions for
   dividends and
   redemption premiums--
   Preferred and
    preference stocks of
    ComEd...............        (534)     (1,830)     (2,773)   (20,170)      (6,359)   (33,991)
   ComEd-obligated
    mandatorily
    redeemable preferred
    securities of
    subsidiary trusts
    holding solely
    ComEd's subordinated
    debt securities.....      (7,428)     (7,428)    (22,283)    (22,283)    (29,710)    (29,710)
  Miscellaneous--net....       9,991      (9,175)    102,158      37,492      43,607      67,816
                          ----------  ----------  ----------  ----------  ----------  ----------
                          $ (156,943) $ (149,676) $ (362,669) $ (416,283) $ (535,580) $ (533,085)
                          ----------  ----------  ----------  ----------  ----------  ----------
Net Income before
 Extraordinary Items ...  $  166,631  $  279,752  $  509,276  $  496,366  $  610,155  $  607,554
Extraordinary Losses,
 less Applicable Income
 Taxes..................      (2,967)        --       (7,134)    (27,579)     (7,134)    (27,579)
                          ----------  ----------  ----------  ----------  ----------  ----------
Net Income..............  $  163,664  $  279,752  $  502,142  $  468,787  $  603,021  $  579,975
                          ==========  ==========  ==========  ==========  ==========  ==========
Earnings per common
 share before
 extraordinary items
  Basic.................  $     0.96  $     1.29  $     2.82  $     2.29  $     3.21  $     2.80
  Diluted...............  $     0.95  $     1.28  $     2.80  $     2.28  $     3.20  $     2.79
Extraordinary losses,
 less applicable income
 taxes (basic and
 diluted)...............  $    (0.02)        --   $    (0.04) $    (0.13) $    (0.04) $    (0.13)
Earnings per common
 share--
  Basic.................  $     0.94  $     1.29  $     2.78  $     2.16  $     3.17  $     2.67
  Diluted...............  $     0.93  $     1.28  $     2.76  $     2.15  $     3.16  $     2.66
Cash Dividends Declared
 per Common Share.......  $     0.40  $     0.40  $     1.20  $     1.20  $     1.60  $     1.60
</TABLE>

  The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                          CONSOLIDATED BALANCE SHEETS
<TABLE>
<CAPTION>
                                                     September 30, December 31,
                       ASSETS                            2000          1999
                       ------                        ------------- ------------
                                                       (Thousands of Dollars)
<S>                                                  <C>           <C>
Utility Plant:
  Plant and equipment, at original cost (includes
   construction work in progress of $801 million and
   $672 million, respectively)......................  $25,742,682  $25,007,637
  Less--Accumulated provision for depreciation......   14,151,813   13,729,223
                                                      -----------  -----------
                                                      $11,590,869  $11,278,414
  Nuclear fuel, at amortized cost...................      845,401      843,724
                                                      -----------  -----------
                                                      $12,436,270  $12,122,138
                                                      -----------  -----------
Investments and Other Property:
  Nuclear decommissioning funds.....................  $ 2,662,020  $ 2,546,540
  Investment in leases..............................      395,868          --
  Nonutility property--less accumulated provision
   for depreciation of $24,894 and $17,345,
   respectively.....................................      251,329      304,976
  Goodwill..........................................       78,373       34,955
  Subsidiary companies..............................       17,583       50,417
  Other, at cost....................................      196,358      130,917
                                                      -----------  -----------
                                                      $ 3,601,531  $ 3,067,805
                                                      -----------  -----------
Current Assets:
  Cash and temporary cash investments...............  $   981,940  $ 1,696,336
  Cash held for redemption of securities............       71,622      285,056
  Other cash investments............................        1,231           62
  Special deposits..................................          515    1,845,730
  Investment in leases..............................    1,235,194          --
  Receivables--
    Customers.......................................    1,300,276    1,224,678
    Forward share repurchase contract...............          --       813,046
    Income Taxes....................................      731,707          --
    Other...........................................      192,266      181,532
    Provisions for uncollectible accounts...........     (48,004)      (50,814)
  Coal and fuel oil, at average cost................       18,271       15,613
  Materials and supplies, at average cost...........      239,929      221,157
  Deferred income taxes related to current assets
   and liabilities..................................       71,276       60,056
  Prepayments and other.............................      150,742       36,268
                                                      -----------  -----------
                                                      $ 4,946,965  $ 6,328,720
                                                      -----------  -----------
Deferred Charges and Other Noncurrent Assets:
  Regulatory assets.................................  $ 1,526,590  $ 1,792,907
  Other.............................................       71,279       94,463
                                                      -----------  -----------
                                                      $ 1,597,869  $ 1,887,370
                                                      -----------  -----------
                                                      $22,582,635  $23,406,033
                                                      ===========  ===========
</TABLE>
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                     September 30, December 31,
           CAPITALIZATION AND LIABILITIES                2000          1999
           ------------------------------            ------------- ------------
                                                       (Thousands of Dollars)
<S>                                                  <C>           <C>
Capitalization (see accompanying statements):
  Common stock equity...............................  $ 3,700,755  $ 5,332,611
  Preferred and preference stocks of ComEd--
    Without mandatory redemption requirements.......          --         1,790
  ComEd-obligated mandatorily redeemable preferred
   securities of subsidiary trusts holding solely
   ComEd's subordinated debt securities*............      350,000      350,000
  Long-term debt....................................    7,133,995    7,129,906
                                                      -----------  -----------
                                                      $11,184,750  $12,814,307
                                                      -----------  -----------
Current Liabilities:
  Notes payable.....................................  $ 1,477,990  $     4,750
  Current portion of long-term debt, redeemable
   preference stock and capitalized lease obliga-
   tions of subsidiary companies....................      350,474      915,439
  Accounts payable..................................      928,584      582,920
  Accrued interest..................................      136,473      146,718
  Accrued taxes.....................................      130,453    1,386,930
  Dividends payable.................................       70,406       94,090
  Customer deposits.................................       69,823       68,128
  Other.............................................      221,779      316,542
                                                      -----------  -----------
                                                      $ 3,385,982  $ 3,515,517
                                                      -----------  -----------
Deferred Credits and Other Noncurrent Liabilities:
  Deferred income taxes.............................  $ 3,451,783  $ 2,484,883
  Nuclear decommissioning liability for retired
   plants...........................................    1,288,000    1,259,700
  Accumulated deferred investment tax credits.......      461,762      484,717
  Accrued spent nuclear fuel disposal fee and re-
   lated interest...................................      797,457      763,427
  Obligations under capital leases of subsidiary
   companies........................................          --       161,611
  Regulatory liabilities............................      580,991      596,157
  Other.............................................    1,431,910    1,325,714
                                                      -----------  -----------
                                                      $ 8,011,903  $ 7,076,209
                                                      -----------  -----------
Commitments and Contingent Liabilities (Note 21)
                                                      $22,582,635  $23,406,033
                                                      ===========  ===========
</TABLE>

  *As described in Note 10 of Notes to Financial Statements, the sole asset of
ComEd Financing I, a subsidiary trust of ComEd, is $206.2 million principal
amount of ComEd's 8.48% subordinated deferrable interest notes due September
30, 2035. The sole asset of ComEd Financing II, also a subsidiary trust of
ComEd, is $154.6 million principal amount of ComEd's 8.50% subordinated
deferrable interest debentures due January 15, 2027.

  The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   STATEMENTS OF CONSOLIDATED CAPITALIZATION

<TABLE>
<CAPTION>
                                                      September 30, December 31,
                                                          2000          1999
                                                      ------------- ------------
                                                        (Thousands of Dollars)
<S>                                                   <C>           <C>
Common Stock Equity:
  Common stock, without par value--
   Outstanding--219,075,493 shares and 217,817,610
    shares, respectively.............................  $ 5,002,631  $ 4,971,618
  Preference stock expense of ComEd..................          --           (72)
  Retained earnings..................................      657,421      364,345
  Accumulated other comprehensive income.............        3,806        6,815
  Treasury stock--49,708,406 shares and 264,406
   shares, respectively..............................   (1,963,103)     (10,095)
                                                       -----------  -----------
                                                       $ 3,700,755  $ 5,332,611
                                                       -----------  -----------
Preferred and Preference Stocks of ComEd--
  Without Mandatory Redemption Requirements:
    $1.425 convertible preferred stock, cumulative,
     without par value--Outstanding--no shares and
     56,291 shares, respectively.....................  $       --   $     1,790
    Prior preferred stock, cumulative, $100 par value
     per share--
     No shares outstanding...........................          --           --
                                                       -----------  -----------
                                                       $       --   $     1,790
                                                       -----------  -----------
  Subject to Mandatory Redemption Requirements:
    Preference stock, cumulative, without par value--
     Outstanding--No shares and 700,000 shares,
      respectively...................................  $       --   $    69,475
    Current redemption requirements for preference
     stock included
     in current liabilities..........................          --       (69,475)
                                                       -----------  -----------
                                                       $       --   $       --
                                                       -----------  -----------
ComEd-Obligated Mandatorily Redeemable Preferred
 Securities of Subsidiary Trusts Holding Solely
 ComEd's Subordinated Debt Securities................  $   350,000  $   350,000
                                                       -----------  -----------
Long-Term Debt:
  First mortgage bonds:
    Maturing 2000 through 2004--5.30% to 9 3/8%......  $   326,000  $   698,245
    Maturing 2005 through 2014--4.40% to 8 3/8%......    1,299,400    1,299,400
    Maturing 2015 through 2023--6.75% to 9 7/8%......    1,486,950    1,589,443
                                                       -----------  -----------
                                                       $ 3,112,350  $ 3,587,088
  Transitional trust notes, due 2001 through 2008--
   5.29% to 5.74%....................................    2,804,541    3,070,000
  Sinking fund debentures, due 2001 through 2011--2
   7/8% to 4.75%.....................................       26,674       30,866
  Pollution control obligations, due 2007 through
   2014--4.65% to 5 7/8%.............................      137,700      139,200
  Other long-term debt...............................    1,447,201    1,089,347
  Current maturities of long-term debt included in
   current liabilities...............................     (350,474)    (737,615)
  Unamortized net debt discount and premium..........      (43,997)     (48,980)
                                                       -----------  -----------
                                                       $ 7,133,995  $ 7,129,906
                                                       -----------  -----------
                                                       $11,184,750  $12,814,307
                                                       -----------  -----------
</TABLE>


   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                  STATEMENTS OF CONSOLIDATED RETAINED EARNINGS

<TABLE>
<CAPTION>
                            Three Months
                           Ended September   Nine Months Ended  Twelve Months Ended
                                 30            September 30        September 30
                          ------------------ ------------------ --------------------
                            2000      1999     2000      1999     2000       1999
                          --------  -------- --------  -------- ---------  ---------
                                          (Thousands of Dollars)
<S>                       <C>       <C>      <C>       <C>      <C>        <C>
Balance at Beginning of
 Period.................  $561,502  $157,467 $364,345  $143,537  $348,126  $ 117,833
Add--Net income.........   163,664   279,752  502,142   468,787   603,021    579,975
                          --------  -------- --------  -------- ---------  ---------
                          $725,166  $437,219 $866,487  $612,324 $ 951,147  $ 697,808
                          --------  -------- --------  -------- ---------  ---------
Deduct--
   Cash dividends
     declared on
     common stock.......  $ 67,750  $ 86,979 $209,473  $260,760 $ 296,495  $ 347,566
   Other capital stock
     transactions--net..        (5)    2,114     (407)    3,438    (2,769)     2,116
                          --------  -------- --------  -------- ---------  ---------
                          $ 67,745  $ 89,093 $209,066  $264,198 $ 293,726  $ 349,682
                          --------  -------- --------  -------- ---------  ---------
Balance at End of Period
  (Includes $1,009
  million and $702
   million of
  appropriated retained
  earnings for future
  dividend payments at
  September 30, 2000 and
  1999, respectively)...  $657,421  $348,126 $657,421  $348,126 $ 657,421  $ 348,126
                          ========  ======== ========  ======== =========  =========
</TABLE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME

<TABLE>
<CAPTION>
                         Three Months Ended   Nine Months Ended   Twelve Months Ended
                            September 30         September 30        September 30
                         -------------------- ------------------- --------------------
                           2000       1999      2000      1999      2000       1999
                         ---------  --------- --------  --------- ---------  ---------
                                           (Thousands of Dollars)
<S>                      <C>        <C>       <C>       <C>       <C>        <C>
Net Income.............. $ 163,664  $ 279,752 $502,142   $468,787  $603,021   $579,975
Other Comprehensive
 Income
  Unrealized
   gains/(losses) on
   securities and
   foreign currency
   translations......... $  (3,221) $     --  $ (2,696)       --  $   9,051  $     --
  Income taxes on other
   comprehensive income.        20        --      (313)       --     (5,245)       --
                         ---------  --------- --------  --------- ---------  ---------
  Other comprehensive               $                   $                    $
   income, net of tax... $  (3,201)       --  $ (3,009)       --  $   3,806        --
                         ---------  --------- --------  --------- ---------  ---------
Comprehensive Income.... $ 160,463  $ 279,752 $499,133  $468,787  $ 606,827  $ 579,975
                         =========  ========= ========  ========= =========  =========
</TABLE>



   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                     STATEMENTS OF CONSOLIDATED CASH FLOWS
<TABLE>
<CAPTION>
                           Three Months Ended       Nine Months Ended        Twelve Months Ended
                              September 30            September 30              September 30
                          ---------------------  ------------------------  ------------------------
                             2000       1999        2000         1999         2000         1999
                          ----------  ---------  -----------  -----------  -----------  -----------
                                                 (Thousands of Dollars)
<S>                       <C>         <C>        <C>          <C>          <C>          <C>
Cash Flow from Operating
 Activities:
 Net income.............  $  163,664  $ 279,752  $   502,142  $   468,787  $   603,021  $   579,975
 Adjustments to
  reconcile net income
  to net cash provided
  by operating
  activities:
   Depreciation and
    amortization........     273,688    210,648      941,010      742,432    1,104,070      976,815
   Deferred income taxes
    and investment tax
    credits--net........     (87,381)   (10,983)    (171,786)    (109,303)  (1,511,488)     (35,026)
   Contribution to
    environmental trust.         --         --           --           --      (250,000)         --
   Recovery of coal
    reserve regulatory
    assets..............         --      91,642          --       111,578      178,038      108,078
   Change in MGP
    remediation
    liability...........      (2,600)       --        (3,800)         --        64,278          --
   Loss/(gain) on
    forward share
    arrangements........         --      17,514     (113,071)     (15,903)     (55,370)     (15,903)
   Provisions/(payments)
    for revenue
    refunds--net........         --      (2,439)         --       (22,297)        (371)         306
   Equity component of
    allowance for funds
    used during
    construction........      (2,643)    (2,243)      (7,945)      (5,999)      (9,735)      (7,600)
   Provisions/(payments)
    for liability for
    separation costs--
    net.................      19,303     (1,746)      10,248      (11,544)     (40,604)       1,029
   Net effect on cash
    flows of changes in:
     Receivables........    (127,965)    (2,306)     (47,845)      63,988     (267,880)      29,834
     Coal and fuel oil..       1,000     14,753         (141)       4,143       (3,666)      21,052
     Materials and
      supplies..........      (3,151)    (2,829)     (14,972)     (10,096)      (6,275)       8,150
     Accounts payable
      excluding
      separation costs--
      net...............     255,105     10,016      306,624      (92,907)     364,228       26,894
     Accrued interest
      and taxes.........      15,095      3,198     (901,804)     107,785      236,394     (123,605)
     Other changes in
      certain current
      assets and
      liabilities.......     (29,487)    37,883       19,597       89,881      (29,241)     152,030
   Other--net...........      58,435    (85,162)     155,658       49,221      (16,168)      40,340
                          ----------  ---------  -----------  -----------  -----------  -----------
                          $  533,063  $ 557,698  $   673,906  $ 1,369,766  $   359,231  $ 1,762,369
                          ----------  ---------  -----------  -----------  -----------  -----------
Cash Flow from Investing
 Activities:
 Construction
  expenditures..........  $ (319,698) $(271,921) $  (914,425) $  (752,614) $(1,285,302) $(1,042,735)
 Nuclear fuel
  expenditures..........    (123,007)   (90,926)    (224,486)    (204,873)    (273,096)    (247,458)
 Sales of generating
  plants................         --         --           --           --     4,885,720          --
 Investment in leases...     (17,279)       --    (1,631,062)         --    (1,631,062)         --
 Equity component of
  allowance for funds
  used during
  construction..........       2,643      2,243        7,945        5,999        9,735        7,600
 Contributions to
  nuclear
  decommissioning
  funds.................         --         --       (39,400)     (39,426)     (89,919)     (96,120)
 Other investments and
  special deposits......      (3,638)   (26,644)   1,694,534      (39,345)    (167,120)     (47,603)
 Plant removal costs--
  net...................      11,474    (17,291)      (7,486)     (49,303)     (25,915)     (89,464)
                          ----------  ---------  -----------  -----------  -----------  -----------
                          $ (449,505) $(404,539) $(1,114,380) $(1,079,562) $ 1,423,041  $(1,515,780)
                          ----------  ---------  -----------  -----------  -----------  -----------
Cash Flow from Financing
 Activities:
 Issuance of
  securities--
  Transitional trust
   notes................  $      --   $     --   $       --   $       --   $       --   $ 3,382,629
  Other long-term debt..     450,062     98,025      478,153      161,155      518,748      161,357
  Capital stock.........      18,465      3,763       31,013        8,175       43,859       13,912
 Retirement, redemption
  and repurchase of
  securities--
  Transitional trust
   notes................     (85,459)   (97,045)    (265,459)    (237,045)    (358,413)    (237,045)
  Other long-term debt..    (231,601)   (28,017)    (606,372)  (1,089,027)    (948,893)  (1,179,228)
  Common stock..........    (374,433)    (2,390)    (959,758)     (32,446)    (683,649)     (39,246)
  Preferred stock.......      (2,174)   (72,644)     (72,318)    (606,852)     (72,358)    (610,423)
 Common stock forward
  repurchase
  arrangements..........         --         --       (67,133)    (662,113)    (262,038)    (662,113)
 Cash dividends paid on
  common stock..........     (70,657)   (86,915)    (228,737)    (260,585)    (315,716)    (347,428)
 Nuclear fuel lease
  principal payments....    (235,365)   (55,610)    (269,985)    (157,546)    (367,841)    (208,820)
 Increase/(decrease) in
  short-term
  borrowings............     797,624     36,900    1,473,240      155,787    1,029,240       40,104
                          ----------  ---------  -----------  -----------  -----------  -----------
                          $  266,462  $(203,933) $  (487,356) $(2,720,497) $(1,417,061) $   313,699
                          ----------  ---------  -----------  -----------  -----------  -----------
Change in Net Cash
 Balance................  $  350,020  $ (50,774) $  (927,830) $(2,430,293) $   365,211  $   560,288
Cash, Temporary Cash
 Investments and Cash
 Held for Redemption of
 Securities:
   Balance at Beginning
    of Period...........     703,542    739,125    1,981,392    3,118,644      688,351      128,063
                          ----------  ---------  -----------  -----------  -----------  -----------
   Balance at End of
    Period..............  $1,053,562  $ 688,351  $ 1,053,562  $   688,351  $ 1,053,562  $   688,351
                          ==========  =========  ===========  ===========  ===========  ===========
</TABLE>
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                         NOTES TO FINANCIAL STATEMENTS

(1) Summary of Significant Accounting Policies.

  Corporate Structure and Basis of Presentation. Unicom is the parent holding
company of ComEd and Unicom Enterprises. ComEd, a regulated electric utility,
is the principal subsidiary of Unicom. Unicom Enterprises is an unregulated
subsidiary of Unicom and is engaged, through its subsidiaries, in energy
service activities.

  The consolidated financial statements include the accounts of Unicom, ComEd,
Indiana Company, Edison Development, the Trusts, ComEd Funding, ComEd Funding
Trust and Unicom's unregulated subsidiaries. All significant intercompany
transactions have been eliminated. Although the accounts of ComEd Funding,
ComEd Funding Trust and the subsidiaries of Unicom Investment, which are SPEs,
are included in the consolidated financial statements, as required by GAAP,
ComEd Funding, ComEd Funding Trust and the subsidiaries of Unicom Investment
are legally separated from Unicom, ComEd and Unicom Investment. The assets of
the SPEs are not available to creditors of Unicom, ComEd or Unicom Investment
and the transitional property and investments held by the SPEs are not assets
of Unicom, ComEd or Unicom Investment.

  See Note 2 for information on Unicom's merger with PECO.

  Use of Estimates. The preparation of financial statements in conformity with
GAAP requires management to make estimates and assumptions that affect the
reported amounts of assets and liabilities, and disclosure of contingent
assets and liabilities at the date of the financial statements and the
reported amounts of revenues and expenses during the reporting period. Actual
results could differ from those estimates. Due to the transition to a new
customer information and billing system, a larger portion of customer revenues
and net receivables were based on estimates for the period July 1998 through
November 1999 than in previous and subsequent periods.

  Regulation. ComEd is subject to regulation as to accounting and ratemaking
policies and practices by the ICC and FERC. ComEd's accounting policies and
the accompanying consolidated financial statements conform to GAAP applicable
to rate-regulated enterprises for the non-generation portion of its business,
including the effects of the ratemaking process in accordance with SFAS
No. 71, Accounting for the Effects of Certain Types of Regulation. Such
effects on the non-generation portion of its business concern mainly the time
at which various items enter into the determination of operating results in
order to follow the principle of matching costs with the applicable revenues
collected from or returned to customers through future rates.

  ComEd's investment in generation-related net utility plant, not subject to
cost-based rate regulation, including construction work in progress and
nuclear fuel, and excluding the decommissioning costs included in the
accumulated provision for depreciation was $7.7 billion and $7.8 billion as of
September 30, 2000 and December 31, 1999, respectively.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  Regulatory Assets and Liabilities. Regulatory assets are incurred costs
which have been deferred and are amortized for ratemaking and accounting
purposes. Regulatory liabilities represent amounts to be settled with
customers through future rates. Regulatory assets and liabilities reflected on
the Consolidated Balance Sheets at September 30, 2000 and December 31, 1999
were as follows:
<TABLE>
<CAPTION>
                                                      September 30, December 31,
                                                          2000          1999
                                                      ------------- ------------
                                                        (Thousands of Dollars)
<S>                                                   <C>           <C>
Regulatory assets:
 Impaired production plant(1).......................   $  103,659    $  366,221
 Deferred income taxes (2)..........................      701,714       688,946
 Nuclear decommissioning costs--Dresden Unit 1......      189,506       202,308
 Nuclear decommissioning costs--Zion Units 1 and 2..      495,811       496,638
 Unamortized loss on reacquired debt (3)............       35,900        38,794
                                                       ----------    ----------
                                                       $1,526,590    $1,792,907
                                                       ==========    ==========
Regulatory liabilities:
 Deferred income taxes (2)..........................   $  580,991    $  596,157
                                                       ==========    ==========
</TABLE>
--------
(1) Expected to be substantially recovered through regulated cash flow by the
    end of 2000.
(2) Recorded in compliance with SFAS No. 109, Accounting for Income Taxes, for
    non-generation related temporary differences.
(3) Amortized over the remaining lives of the non-generation related long-term
    debt issued to finance the reacquisition. See "Loss on Reacquired Debt"
    below for additional information.

  The regulatory assets for Dresden Unit 1 and Zion Units 1 and 2 represent
unrecovered nuclear decommissioning costs, which are expected to be recovered
over the periods 2000-2011 and 2000-2013, respectively, through future rate
recoveries and related trust fund earnings. See "Depreciation, Amortization of
Regulatory Assets and Liabilities and Decommissioning" below for additional
information.

  Depreciation, Amortization of Regulatory Assets and Liabilities, and
Decommissioning. Depreciation, amortization of regulatory assets and
liabilities, and decommissioning for the three months, nine months and twelve
months ended September 30, 2000 and 1999 were as follows:
<TABLE>
<CAPTION>
                          Three Months Ended  Nine Months Ended Twelve Months Ended
                             September 30       September 30       September 30
                          ------------------- ----------------- -------------------
                            2000      1999      2000     1999     2000      1999
                          --------- --------- -------- -------- --------- ---------
                                           (Thousands of Dollars)
<S>                       <C>       <C>       <C>      <C>      <C>       <C>
Depreciation expense....  $ 171,820 $ 180,598 $506,432 $538,623 $ 594,046 $ 714,518
Amortization of
 regulatory assets and
 liabilities--net.......     37,439       556  262,562   98,900   296,853   131,393
                          --------- --------- -------- -------- --------- ---------
                          $ 209,259 $ 181,154 $768,994 $637,523 $ 890,899 $ 845,911
Decommissioning expense.     20,955    20,955   62,865   62,865    83,820    83,820
                          --------- --------- -------- -------- --------- ---------
                          $ 230,214 $ 202,109 $831,859 $700,388 $ 974,719 $ 929,731
                          ========= ========= ======== ======== ========= =========
</TABLE>

  The regulatory asset amortization recorded in the recent three, nine and
twelve month periods represent amounts calculated in accordance with the
earnings cap provisions of the 1997 Act.

  Consistent with the provisions of the 1997 Act, the (pre-tax) gain on the
December 1999 sale of Fossil Plant assets of $2.587 billion resulted in a
regulatory liability, which was used to recover


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

regulatory assets. Therefore, the gain on the sale, excluding $43 million of
amortization of investment tax credits, was recorded as a regulatory liability
in the amount of $2.544 billion and amortized in the fourth quarter of 1999.
The amortization of the regulatory liability and additional regulatory asset
amortization of $2.456 billion are reflected in depreciation and amortization
expense on Unicom's Statements of Consolidated Operations and resulted in a
net reduction to depreciation and amortization expense of $88 million in the
fourth quarter of 1999.

  See Note 3 for additional information regarding amortization of regulatory
assets with respect to limits on ComEd's earnings due to statutory sharing
provisions. See Note 4 for additional information regarding the fossil plant
sale.

  Provisions for depreciation, including nuclear plant, were at average annual
rates of average depreciable utility plant and equipment for the three months,
nine months and twelve months ended September 30, 2000 and 1999 as follows:
<TABLE>
<CAPTION>
                         Three Months Ended  Nine Months Ended Twelve Months Ended
                            September 30       September 30       September 30
                         ------------------  ----------------- -------------------
                           2000      1999      2000     1999     2000      1999
                         --------- --------- -------- -------- --------- ---------
<S>                      <C>       <C>       <C>      <C>      <C>       <C>
Average annual
 depreciation rates.....     2.70%     2.65%    2.70%    2.65%     2.69%     2.67%
</TABLE>

  Nuclear plant decommissioning costs generally are accrued over the current
NRC license lives of the related nuclear generating units. The accrual is
based on an annual levelized cost of the unrecovered portion of estimated
decommissioning costs, which are escalated for expected inflation to the
expected time of decommissioning and are net of expected earnings on the trust
funds. Dismantling is expected to occur relatively soon after the end of the
current NRC license life of each generating station currently operating. The
accrual for decommissioning is based on the prompt removal method authorized
by NRC guidelines. ComEd's ten operating units have remaining current NRC
license lives ranging from 9 to 28 years. ComEd's Zion Station and Dresden
Unit 1 are retired and are expected to be dismantled beginning in the years
2014 and 2011, respectively, which is consistent with the regulatory treatment
for recovery of the related decommissioning costs.

  Based on ComEd's most recent study, decommissioning costs are estimated to
be $5.6 billion in current-year (2000) dollars, including a contingency
allowance. These expenditures are expected to occur primarily during the
period from 2010 through 2034. All such costs are expected to be funded by the
external decommissioning trusts, which ComEd established in compliance with
Illinois law and into which ComEd has been making annual contributions. Future
decommissioning cost estimates may be significantly affected by the adoption
of, or changes to NRC regulations, as well as changes in the assumptions used
in making such estimates, including changes in technology, available
alternatives for the disposal of nuclear waste and inflation.

  Since 1995, ComEd has collected decommissioning costs from its ratepayers in
conjunction with a rider to its tariffs. The rider allows annual adjustments
to decommissioning cost collections outside the context of a traditional rate
proceeding and will continue under the 1997 Act. The ICC has approved ComEd's
current funding plan, which provides for annual contributions of current
accruals and ratable contributions of past accruals over the remaining current
NRC license lives of the nuclear plants.

  ComEd is undertaking steps to transfer its nuclear generating assets,
including the decommissioning trust funds, to a generation and power marketing
subsidiary of Exelon ("Genco"), following the merger with PECO. On August 3,
2000 the NRC approved the request of ComEd and PECO to transfer licenses for
both companies' nuclear plants from ComEd and PECO to Genco.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  As part of the transfer of the nuclear generating stations, Genco is to
assume responsibility for the decommissioning of those stations, including
Zion Station and Dresden Unit 1, subject to an obligation of ComEd to continue
to collect decommissioning-related charges from its customers. In May 2000,
ComEd filed a petition with the ICC seeking approval to revise its existing
decommissioning rider to its rates. Under the proposed revision, ComEd would
collect approximately $121 million annually for a period of six years, after
which the decommissioning rider and collection of decommissioning funds would
end. On October 25, 2000, an ICC hearing examiner issued a proposed order
denying ComEd's petition on the basis that existing law does not allow the ICC
to authorize ComEd to continue to collect funds for decommissioning nuclear
generating plants that it no longer owns. ComEd believes that the proposed
order is wrong as a matter of law and that the ICC has the statutory authority
to grant ComEd's petition. The ICC is not bound by the proposed order and may
accept or reject it, in whole or in part, in preparing its final order in the
proceedings. Responses from the parties to the proceedings regarding the
proposed order are due in early November and a final order is expected before
year-end. ComEd is evaluating the effect of the proposed order on the proposed
structure of the Genco transaction. The transfer of the nuclear assets,
including the decommissioning trust funds, are subject to satisfactory
resolution of significant regulatory and tax issues. Although ComEd cannot
currently determine whether an alternative funding structure will ultimately
be approved and implemented, such a structure could increase the
decommissioning cost recovery risk. See Note 2 for additional information on
the merger of Unicom and PECO.

  For the ten operating nuclear units, decommissioning cost accruals are
recorded as portions of depreciation expense and accumulated provision for
depreciation on the Statements of Consolidated Operations and the Consolidated
Balance Sheets, respectively, as such costs are recovered through rates. As of
September 30, 2000, the total decommissioning costs included in the
accumulated provision for depreciation were $2,197 million.

  For ComEd's retired nuclear units, the total estimated liability for nuclear
decommissioning in current-year (2000) dollars is recorded as a noncurrent
liability. The unrecovered portion of the liability is recorded as a
regulatory asset. The nuclear decommissioning liability for retired plants as
of September 30, 2000 was as follows:
<TABLE>
<CAPTION>
                                                               Zion
                                                    Dresden   Units
                                                     Unit 1  1 and 2    Total
                                                    -------- -------- ----------
                                                       (Thousands of Dollars)
<S>                                                 <C>      <C>      <C>
Amounts recovered through rates and investment
 fund earnings....................................  $124,394 $478,289 $  602,683
Unrecovered portion of the liability..............   189,506  495,811    685,317
                                                    -------- -------- ----------
 Nuclear decommissioning liability for retired
  plants..........................................  $313,900 $974,100 $1,288,000
                                                    ======== ======== ==========
</TABLE>

  Under Illinois law, decommissioning cost collections are required to be
deposited into external trusts. Consequently, such collections do not add to
the cash flows available for general corporate purposes. The fair value of
funds accumulated in the external trusts at September 30, 2000 was $2,662
million, which includes pre-tax unrealized appreciation of $702 million. The
earnings on the external trusts for operating plants accumulate in the fund
balance and accumulated provision for depreciation. Nuclear decommissioning
funding as of September 30, 2000 was as follows:
<TABLE>
<CAPTION>
                                                          (Thousands of Dollars)
<S>                                                       <C>
Amounts recovered through rates and investment fund
 earnings for operating plants (included in the
 accumulated provision for depreciation)................        $2,196,811
Amounts recovered through rates and investment fund
 earnings for retired plants............................           602,683
Less past accruals not yet contributed to the trusts....           137,474
                                                                ----------
 Fair value of external trust funds.....................        $2,662,020
                                                                ==========
</TABLE>


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  In February 2000, the FASB issued an exposure draft addressing the
accounting for asset removal costs, including those relating to nuclear
decommissioning. The exposure draft would require companies to recognize the
entire decommissioning liability on the balance sheet when the liability is
incurred very early in the operating life of the generating station, rather
than ratably over the operating life of the station as is the current industry
accounting practice. The cost basis of the related nuclear power plant would
be increased by a corresponding amount at the time the liability is recorded
and depreciated over the operating life. Although over the life of the
stations total decommissioning provisions would approximate the total amount
recognized over the life of the stations under current electric utility
accounting practices, amounts for interim years could increase or decrease
from currently expected decommissioning provisions. However, ComEd does not
believe such changes will adversely impact results of operations due to the
ability to recover decommissioning costs through rates. The exposure draft is
proposed to be effective for financial statements issued for fiscal years
beginning after June 15, 2001. A final statement is expected to be issued
during the first quarter of 2001.

  Customer Receivables and Revenues. ComEd is engaged principally in the
production, purchase, transmission, distribution and sale of electricity to a
diverse base of residential, commercial, industrial and wholesale customers.
ComEd's electric service territory has an area of approximately 11,300 square
miles and an estimated population of approximately eight million as of
September 30, 2000. It includes the City, an area of about 225 square miles
with an estimated population of approximately three million from which ComEd
derived approximately 30 percent of its ultimate consumer revenues in 1999.
ComEd had approximately 3.5 million electric customers at September 30, 2000.
Revenues are recognized as electric and delivery services are provided to
customers.

  As a result of the implementation of a new customer billing and information
system in July 1998, billing and collection delays temporarily increased
accounts receivable from customers. In December 1998 and June 1999, ComEd
recorded increased provisions for uncollectible accounts to recognize the
estimated portion of the receivables that are not expected to be recoverable.
Such provisions increased O&M expenses by $35 million in the twelve months
ended September 30, 1999, compared to normally expected levels. Receivables
from customers include $53 million and $103 million as of September 30, 2000
and December 31, 1999, respectively, in estimated unbilled revenue for service
that has been provided to customers, but for which bill issuance was delayed
beyond the normal date of issuance. Receivables from customers as of September
30, 2000 and December 31, 1999 also include $321 million and $295 million,
respectively, for estimated unbilled revenues for electric service that has
been provided to customers subsequent to the normal billing date and prior to
the end of the reporting period. See "Use of Estimates" above for additional
information regarding ComEd's revenues and net receivables.

  See Note 3 for additional information.

  Nuclear Fuel. The cost of nuclear fuel is amortized to fuel expense based on
the quantity of heat produced using the unit of production method. As
authorized by the ICC, provisions for spent nuclear fuel disposal costs have
been recorded at a level required to recover the fee payable on the current
nuclear-generated and sold electricity and the current interest accrual on the
one-time fee payable to the DOE for nuclear generation prior to April 7, 1983.
The one-time fee and interest thereon have been recovered and the current fee
and interest on the one-time fee are presently being recovered through base
rates. See Note 13 for additional information concerning the disposal of spent
nuclear fuel, one-time fee and interest accrual on the one-time fee. Nuclear
fuel expenses, including leased fuel costs


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued


and provisions for spent nuclear fuel disposal costs, were $97 million and
$107 million for the three months ended September 30, 2000 and 1999,
respectively, $294 million and $288 million for the nine months ended
September 30, 2000 and 1999, respectively, and $386 million and $372 million
for the twelve months ended September 30, 2000 and 1999, respectively.

  Income Taxes. Deferred income taxes are provided for income and expense
items recognized for financial accounting purposes in periods that differ from
those for income tax purposes. Income taxes deferred in prior years are
charged or credited to income as the book/tax temporary differences reverse.
Prior years' deferred investment tax credits are amortized through credits to
income generally over the lives of the related property. Income tax credits
resulting from interest charges applicable to nonoperating activities,
principally construction, are classified as other income.

  AFUDC and Interest Capitalized. In accordance with the uniform systems of
accounts prescribed by regulatory authorities, ComEd capitalizes AFUDC,
compounded semiannually, which represents the estimated cost of funds used to
finance its construction program for the non-generation portion of its
business. The equity component of AFUDC is recorded on an after-tax basis and
the borrowed funds component of AFUDC is recorded on a pre-tax basis. The
average annual capitalization rates for AFUDC were 8.29% and 7.87% for the
three months ended September 30, 2000 and 1999, respectively, 8.29% and 7.85%
for the nine months ended September 30, 2000 and 1999, respectively, and 8.14%
and 7.92% for the twelve months ended September 30, 2000 and 1999,
respectively. In accordance with SFAS No. 34, Capitalization of Interest Cost,
ComEd capitalized $2 million and $4 million for the three months ended
September 30, 2000 and 1999, respectively, $4 million and $16 million for the
nine months ended September 30, 2000 and 1999, respectively, and $10 million
and $31 million for the twelve months ended September 30, 2000 and 1999,
respectively, in interest costs on its generation-related construction work in
progress and nuclear fuel in process. AFUDC and interest capitalized do not
contribute to the current cash flow of Unicom or ComEd.

  Interest. Total interest costs incurred on debt, leases and other
obligations were $160 million and $160 million for the three months ended
September 30, 2000 and 1999, respectively, $473 million and $484 million to
the nine months ended September 30, 2000 and 1999, respectively, and $631
million and $611 million for the twelve months ended September 30, 2000 and
1999, respectively.

  Debt Discount, Premium and Expense. Discount, premium and expense on long-
term debt of ComEd are being amortized over the lives of the respective
issues.

  Loss on Reacquired Debt. Consistent with regulatory treatment, the net loss
from ComEd's reacquisition, in connection with the refinancing of first
mortgage bonds, sinking fund debentures and pollution control obligations
prior to their scheduled maturity dates, is deferred and amortized over the
lives of the long-term debt issued to finance the reacquisition for non-
generation related financings. See "Regulatory Assets and Liabilities" above
and Note 3 for additional information.

  Stock Option Awards/Employee Stock Purchase Plan. Unicom has elected to
adopt SFAS No. 123, Accounting for Stock-Based Compensation, for disclosure
purposes only. Unicom accounts for its stock option awards and ESPP under APB
Opinion No. 25, Accounting for Stock Issued to Employees. See Note 7 for
additional information.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  Average Common Shares Outstanding. The number of average outstanding common
shares used to compute basic and diluted EPS for the three months, nine months
and twelve months ended September 30, 2000 and 1999 were as follows:

<TABLE>
<CAPTION>
                          Three Months Ended  Nine Months Ended Twelve Months Ended
                             September 30       September 30       September 30
                          ------------------- ----------------- -------------------
                            2000      1999      2000     1999     2000      1999
                          --------- --------- -------- -------- --------- ---------
                                            (Thousands of Shares)
<S>                       <C>       <C>       <C>      <C>      <C>       <C>
Average Number of Common
 Shares Outstanding:
 Average Number of
  Common Shares--Basic..    174,003   217,375  180,739  217,231   189,935   217,208
 Potentially Dilutive
  Common Shares--
  Treasury Method:
   Stock Options........      1,595       801    1,025      777       899       777
   Other Convertible
    Securities..........         86        89       86       89        86        89
                          --------- --------- -------- -------- --------- ---------
Average Number of Common
 Shares--Diluted........    175,684   218,265  181,850  218,097   190,920   218,074
                          ========= ========= ======== ======== ========= =========
</TABLE>

  Energy Risk Management Contracts. In the normal course of business, ComEd
utilizes contracts for the forward sale and purchase of energy to manage
effectively the utilization of its available generating capability. ComEd also
utilizes put and call option contracts and energy swap arrangements to limit
the market price risk associated with the forward commodity contracts. As
ComEd does not currently utilize financial or commodity instruments for
trading or speculative purposes, any gains or losses on forward commodity
contracts are recognized when the underlying transactions affect earnings.
Revenues and expenses associated with market price risk management contracts
are amortized over the terms of such contracts.

  In June 1998, the FASB issued SFAS No. 133, Accounting for Derivative
Instruments and Hedging Activities, which establishes accounting and reporting
standards requiring that every derivative instrument, including certain
derivative instruments embedded in other contracts, be recorded on the
Consolidated Balance Sheets as either an asset or liability measured at its
fair value. In June 2000, FASB issued SFAS No. 138, Accounting for Certain
Derivative Instruments and Certain Hedging Activities, as an amendment of SFAS
No. 133. SFAS No. 133, as amended, requires that changes in the derivative's
fair value be recognized currently in earnings, unless specific hedge
accounting criteria are met. The accounting for qualifying hedges allows a
derivative's gains and losses to offset related results on the hedged item on
the Statements of Consolidated Operations, and requires companies to formally
document, designate, and assess the effectiveness of transactions that receive
hedge accounting.

  The effective date of SFAS No. 133, as amended, has been delayed for one
year, to fiscal years beginning after June 15, 2000. SFAS No. 133. SFAS No.
133, as amended, must be applied to (i) derivative instruments and
(ii) certain derivative instruments embedded in hybrid contracts that were
issued, acquired, or substantively modified after January 1, 1998 or January
1, 1999 at the Company's election.

  Unicom and ComEd will adopt SFAS No. 133 on January 1, 2001, and are in the
final process of reviewing their various contracts to determine which
contracts need to be reflected as derivatives under the standard and accounted
for at fair value. Among the contracts that are expected to be subject to the


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

fair value requirements are contracts related to electricity and gas purchases
and sales. Unicom and ComEd have not fully quantified the effects on their
financial statements of adopting SFAS No. 133 on January 1, 2001. The ultimate
impact will depend upon market prices, at the time of adoption, for
electricity and gas. Adoption of SFAS No. 133 in 2001 will result in increased
volatility in earnings.

  Reclassifications. Certain prior year amounts have been reclassified to
conform with current period presentation. These reclassifications had no
effect on operating results.

  Cash Held for Redemption of Securities. As of September 30, 2000, the cash
held for redemption of securities reported on the Consolidated Balance Sheets
includes $72 million of escrowed cash and pending instrument funding charges
collected from ComEd customers to be applied to the principal and interest
payment on the transitional trust notes. See Note 3 for additional
information.

  Investment in Leases. In June 2000, Unicom Investment entered into a like-
kind exchange transaction utilizing proceeds from the December 1999 sale of
fossil generating stations. Under the transaction, Unicom Investment invested
approximately $1.6 billion, previously classified as special deposits, in
passive generating station leases with two separate entities. The generating
stations were leased back to such entities as part of the transaction. For
financial accounting purposes, the investments are accounted for as direct
financing lease investments. Under the terms of the lease agreements, Unicom
Investment will receive prepayments of its scheduled lease payments of about
$1.24 billion in the fourth quarter of 2000 which will reduce the outstanding
lease investment at that time.

  The components of the net investment in the direct financing leases as of
September 30, 2000 are as follows:

<TABLE>
<CAPTION>
                                                                     (Thousands
                                                                         of
                                                                      Dollars)
                                                                     ----------
      <S>                                                            <C>
      Total minimum lease payments.................................. $2,727,233
      Less: Unearned income.........................................  1,096,172
                                                                     ----------
                                                                     $1,631,062
                                                                     ==========
</TABLE>

  Goodwill. Goodwill represents the excess of the purchase consideration over
the fair value of the net assets of the companies or natural gas service
contracts acquired by subsidiaries of Unicom Enterprises. Goodwill arising
from such acquisitions is generally being amortized on a straight-line basis
over 40 years for goodwill arising from the acquisition of established
mechanical services companies and over 10 to 15 years for the goodwill arising
from the acquisition of performance contracting companies and natural gas
service contracts.

  Statements of Consolidated Cash Flows. For purposes of the Statements of
Consolidated Cash Flows, temporary cash investments, generally investments
maturing within three months at the time of purchase, and cash held for
redemption of securities are considered to be cash equivalents. Supplemental
cash flow information for the three months, nine months and twelve months
ended September 30, 2000 and 1999 was as follows:


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

<TABLE>
<CAPTION>
                          Three Months Ended   Nine Months Ended  Twelve Months Ended
                             September 30        September 30        September 30
                          ------------------- ------------------- -------------------
                            2000      1999       2000      1999      2000      1999
                          --------- --------- ---------- -------- ---------- --------
                                            (Thousands of Dollars)
<S>                       <C>       <C>       <C>        <C>      <C>        <C>
Supplemental Cash Flow
 Information:
 Cash paid during the
  period for:
   Interest (net of
    amount capitalized).   $143,101  $158,363 $  411,261 $485,881 $  532,195 $572,934
   Income taxes (net of
    refunds)............  $  28,080  $140,915 $1,114,302 $225,022 $1,344,460 $484,873
Supplemental Schedule of
 Non-Cash Investing and
 Financing Activities:
 Capital lease
  obligations incurred
  by subsidiary
  companies.............  $     --  $     189 $       34 $  1,625 $      154 $  3,062
</TABLE>

  (2) Merger Agreement. On October 19, 2000, Unicom and PECO received approval
from the Securities and Exchange Commission under the Public Utilities Holding
Company Act of 1935, the last regulatory approval, to complete their merger to
form Exelon Corporation. The companies completed the merger on October 20,
2000 and began trading as Exelon Corporation (NYSE: EXC) on October 23, 2000.

  Upon completion of the merger, PECO and ComEd became the principal utility
subsidiaries of Exelon. This result was achieved by a mandatory exchange of
the outstanding common stock of PECO for common stock of Exelon, and a
subsequent merger of Unicom with and into Exelon wherein holders of Unicom
common stock received 0.875 shares of Exelon common stock plus $3.00 in cash
for each of their shares of Unicom common stock. The merger transaction will
be accounted for as a purchase of Unicom by PECO.

  Consistent with Unicom's $1 billion share repurchase commitment in the
merger agreement with PECO, Unicom has completed the repurchase of 24 million
shares of its common stock. The shares were repurchased from the open market
over the recent ten months pursuant to agreements with financial institutions.
Approximately $153 million of these share repurchases were funded with
proceeds from the 1998 issuance of transitional trust notes. The remaining
share repurchases were funded from available funds, including funds ultimately
resulting from the fossil plant sale. These share repurchases are in addition
to 26.3 million shares of Unicom common stock that Unicom repurchased in
January 2000 upon settlement of certain forward purchase contracts. See Notes
6 and 23 for additional information.

  ComEd and PECO are undertaking steps to transfer their generating assets and
wholesale power marketing operations to subsidiaries following the
consummation of the merger. Subsequent to those transfers, these subsidiaries
will be transferred to Exelon and ultimately will be combined into a power
generation and marketing company, which will be a direct subsidiary of Exelon
("Genco"). In ComEd's case, the transfer will include its Braidwood, Byron,
Dresden, LaSalle and Quad Cities nuclear generating stations representing an
aggregate generating capability of 9,566 megawatts, its Zion station, its
rights and obligations under various power purchase agreements, the assets
constituting its nuclear decommissioning trusts and its wholesale power
marketing business. Genco will enter into a power purchase agreement with
ComEd in which Genco will undertake to supply ComEd's full requirements for
electric energy through 2004 and all of ComEd's requirements up to the
available capacity of the nuclear generating stations in 2005 and 2006. On
August 3, the NRC approved the request of ComEd and PECO to transfer licenses
for both companies' nuclear plants from ComEd and PECO to Genco.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  As part of the transfer of the nuclear generating stations, Genco is to
assume responsibility for the decommissioning of those stations, including
Zion Station and Dresden Unit 1, subject to an obligation of ComEd to continue
to collect decommissioning-related charges from its customers. In May 2000,
ComEd filed a petition with the ICC seeking approval to revise its existing
decommissioning rider to its rates. Under the proposed revision, ComEd would
collect approximately $121 million annually for a period of six years, after
which the decommissioning rider and collection of decommissioning funds would
end. On October 25, 2000, an ICC hearing examiner issued a proposed order
denying ComEd's petition on the basis that existing law does not allow the ICC
to authorize ComEd to continue to collect funds for decommissioning nuclear
generating plants that it no longer owns. ComEd believes that the proposed
order is wrong as a matter of law and that the ICC has the statutory authority
to grant ComEd's petition. The ICC is not bound by the proposed order and may
accept or reject it, in whole or in part, in preparing its final order in the
proceedings. Responses from the parties to the proceedings regarding the
proposed order are due in early November and a final order is expected before
year-end. ComEd is evaluating the effect of the proposed order on the proposed
structure of the Genco transaction. The transfer of the nuclear assets,
including the decommissioning trust funds, are subject to satisfactory
resolution of significant regulatory and tax issues.

  (3) Accounting Effects Related to the 1997 Act. In December 1997, the
Governor of Illinois signed into law the 1997 Act, which established a phased
process to introduce competition into the electric industry in Illinois under
a less regulated structure. The 1997 Act was amended in June 1999.

  As a result of the 1997 Act and FERC rules, prices for the supply of
electric energy are expected to transition from cost-based, regulated rates to
rates determined by competitive market forces. Accordingly, the 1997 Act
provides for, among other things, gradual customer access to other electric
suppliers or a power purchase option which allows the purchase of electric
energy from ComEd at market based prices, and the collection of a CTC from
customers who choose to purchase electric energy from a RES or elect the power
purchase option during a transition period that extends through 2006.
Effective October 1, 1999, the CTC was established in accordance with a
formula defined in the 1997 Act. The CTC, which is applied on a cents per
kilowatthour basis, considers the revenue which would have been collected from
a customer under tariffed rates, reduced by the revenue the utility will
receive for providing delivery services to the customer, the market price for
electricity and a defined mitigation factor, which represents the utility's
opportunity to develop new revenue sources and achieve cost savings. The CTC
allows ComEd to recover some of its costs which might otherwise be
unrecoverable under market-based rates. Nonetheless, ComEd will need to take
steps to address the portion of such costs which are not recoverable through
the CTC. Such steps may include cost control efforts, developing new sources
of revenue and asset dispositions. See Note 4 for additional information.

  As of June 1, 2000, more than 62,000 non-residential customers are eligible
to choose a new electric supplier or elect the purchase power option. As of
September 30, 2000, over 7,800 non-residential customers, representing
approximately 18 percent of ComEd's retail kilowatthour sales for the twelve
months prior to the introduction of open access, elected to receive their
electric energy from a RES or chose the purchase power option. The impact of
customer choice on results of operations will depend on various factors,
including the extent to which customers elect to receive energy from a RES or
the purchased power option, the development of a competitive market, the
market price for energy, the extent to which ComEd develops new sources of
revenue and the results of cost control efforts. Because of the inherent
uncertainty in these factors ComEd is unable to predict the long term impact
of customer choice on results of operations. However, ComEd does not expect
customer choice to have a material effect in the near term as a result of the
collection of CTCs as provided by the 1997 Act.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  Utilities are required to continue to offer delivery services, including the
transmission and distribution of electric energy, such that customers who
select a RES can receive electric energy from that supplier using existing
transmission and distribution facilities. Such services will continue to be
offered under cost-based, regulated rates. The ICC issued orders in August and
September 1999 approving, with modifications, ComEd's delivery service
tariffs.

  The 1997 Act also provides for a 15% residential base rate reduction which
became effective August 1, 1998 and an additional 5% residential base rate
reduction in October 2001. ComEd's operating revenues were reduced by
approximately $170 million in 1998 due to the 15% residential base rate
reduction. The 15% rate reduction further reduced ComEd's operating revenues
by approximately $226 million in 1999, compared to 1998 rate levels.

  Notwithstanding the rate reductions and subject to certain earnings tests, a
rate freeze will generally be in effect until at least January 1, 2005. During
this period, utilities may reorganize, sell or assign assets, retire or remove
plants from service, and accelerate depreciation or amortization of assets
with limited ICC regulatory review. A utility may request a rate increase
during the rate freeze period only when necessary to ensure the utility's
financial viability. Under the earnings provision of the 1997 Act, if the
earned return on common equity of a utility during this period exceeds an
established threshold, one-half of the excess earnings must be refunded to
customers. The threshold rate of return on common equity is based on the 30-
Year Treasury Bond rate, plus 5.5% in the years 1998 and 1999, and plus 8.5%
in the years 2000 through 2004. The utility's earned return on common equity
and the threshold return on common equity for ComEd are each calculated on a
two-year average basis. The earnings sharing provision is applicable only to
ComEd's earnings. Consistent with the provisions of the 1997 Act, increased
amortization of regulatory assets may be recorded, thereby reducing the earned
return on common equity, if earnings otherwise would have exceeded the maximum
allowable rate of return. The potential for earnings sharing or increased
amortization of regulatory assets could limit earnings in future periods.
ComEd's returns on average common equity for the years 1999 and 1998 were
11.56% and 10.86%, respectively. The average return of 11.21% for the two year
period ended December 31, 1999 equaled the threshold return for that period
under the earnings provisions of the 1997 Act. ComEd does not currently expect
to trigger the earnings sharing provisions of the 1997 Act in the years 2000
through 2004.

  The 1997 Act also allows a portion of ComEd's future revenues to be
segregated and used to support the issuance of securities by ComEd or a SPE.
The proceeds, net of transaction costs, from such security issuances must be
used to refinance outstanding debt or equity or for certain other limited
purposes. In December 1998, ComEd initiated the issuance of $3.4 billion of
transitional trust notes through its SPEs, ComEd Funding and ComEd Funding
Trust. The proceeds from the transitional trust notes, net of transaction
costs, were used to redeem long-term debt and preference stock and reduce
ComEd's outstanding short-term debt, as required. Unicom has also repurchased
its common stock using proceeds it received from ComEd's repurchase of its
common stock held by Unicom. The balance of the proceeds were used for the
payment of fees and other debt issuance costs and a collateral requirement
related to the transitional trust notes.

  (4) Fossil Plant Sale. In December 1999, ComEd completed the sale of its
fossil generating assets to EME for a cash purchase price of $4.8 billion. The
fossil generating assets represent an aggregate generating capacity of
approximately 9,772 megawatts.

  Just prior to the consummation of the fossil plant sale, ComEd transferred
these assets to an affiliate, Unicom Investment. In consideration for the
transferred assets, Unicom Investment paid ComEd consideration totalling
approximately $4.8 billion in the form of a demand note in the amount


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
of approximately $2.4 billion and an interest-bearing note with a maturity of
twelve years. Unicom Investment immediately sold the fossil plant assets to
EME, in consideration of which Unicom Investment received approximately $4.8
billion in cash from EME. Immediately after its receipt of the cash payment
from EME, Unicom Investment paid the $2.4 billion aggregate principal due to
ComEd under the demand note. Unicom Investment will use the remainder of the
cash received from EME to fund other business opportunities, including the
share repurchases. Of the cash received by ComEd, $1.5 billion has been used
to pay the costs and taxes associated with the fossil plant sale, including
ComEd's contribution of $250 million of the proceeds to an environmental trust
as required by the 1997 Act. The remainder of the demand note proceeds will be
available to ComEd to fund, among other things, transmission and distribution
projects, nuclear generation station projects, and environmental and other
initiatives. See Note 1, under "Investment in Leases," for additional
information.

  The sale produced an after-tax gain of approximately $1.6 billion, after
recognizing commitments associated with certain coal contracts ($350 million),
recognizing employee-related costs ($112 million) and contributing to the
environmental trust. The coal contract costs include the amortization of the
remaining balance of ComEd's regulatory asset for unrecovered coal reserves of
$178 million and the recognition of $172 million of settlement payments
related to the above-market portion of coal purchase commitments ComEd
assigned to EME at market value upon completion of the fossil plant sale. The
severance costs included pension and post-retirement welfare benefit
curtailment and special termination benefit costs of $51 million and
transition, separation and retention payments of $61 million. A total of 1,730
fossil station employee positions were eliminated upon completion of the
fossil plant sale on December 15, 1999. The employees whose positions were
eliminated have been terminated. Consistent with the provisions of the 1997
Act, the (pre-tax) gain on the sale of $2.587 billion resulted in a regulatory
liability, which was used to recover regulatory assets. Therefore, the gain on
the sale, excluding $43 million of amortization of investment tax credits, was
recorded as a regulatory liability in the amount of $2.544 billion and
amortized in the fourth quarter of 1999. The amortization of the regulatory
liability and additional regulatory asset amortization of $2.456 billion are
reflected in depreciation and amortization expense on Unicom's Statement of
Consolidated Operations. See Note 1, under "Regulatory Assets and
Liabilities," for additional information.

  (5) Authorized Shares, Voting Rights and Stock Rights of Capital Stock. At
September 30, 2000, Unicom's authorized shares consisted of 400,000,000 shares
of common stock. The authorized shares of ComEd preferred and preference
stocks at September 30, 2000 were: preference stock--6,810,451 shares and
prior preferred stock--850,000 shares. The preference and prior preferred
stocks are issuable in series and may be issued with or without mandatory
redemption requirements.

  Pursuant to a plan adopted by the Unicom Board of Directors on February 2,
1998, each share of Unicom's common stock carries the right (referred to
herein as a "Right") to purchase one-thousandth of one share of Unicom's
common stock at a purchase price of $100 per whole share of common stock,
subject to adjustment. The plan was amended on September 22, 1999 to render
the Rights inapplicable to the transactions contemplated by the Merger
Agreement. The Rights are tradable only with Unicom's common stock until they
become exercisable. The Rights become exercisable upon the earlier of ten days
following a public announcement that a person (an "Acquiring Person") has
acquired 15% or more of Unicom's outstanding common stock or ten business days
(or such later date as may be determined by action of the Board of Directors)
following the commencement of a tender or exchange offer which, if
consummated, would result in a person or group becoming an Acquiring Person.
The Rights are subject to redemption by Unicom at a price of $0.01 per Right,
subject to certain limitations, and will expire on February 2, 2008. If a
person or group becomes an Acquiring


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
stock at a 50% discount from the then current market price. If Unicom is
acquired in a merger or other business combination transaction in which Unicom
is not the survivor, or 50% or more of Unicom's assets or earning power is
sold or transferred, each holder of a Right shall then have the right to
receive, upon exercise, common stock of the acquiring company at a 50%
discount from the then current market price of such common stock. Rights held
by an Acquiring Person become void upon the occurrence of such events.

  (6) Common Equity. In January 2000, Unicom physically settled the forward
share repurchase arrangements it had with financial institutions for the
repurchase of 26.3 million Unicom common shares. Prior to settlement, the
repurchase arrangements were recorded as a receivable on Unicom's Consolidated
Balance Sheets based on the aggregate market value of the shares under the
arrangements. In 1999, net unrealized losses of $44 million (after-tax), or
$0.20 per common share were recorded related to the arrangements. The
settlement of the arrangements in January 2000 resulted in a gain of $113
million (after-tax), which was recorded in the first quarter of 2000. The
settlement of the arrangements resulted in a reduction in Unicom's outstanding
common shares and common stock equity effective January 2000.

  Consistent with Unicom's $1 billion share repurchase commitment in the
merger agreement with PECO, Unicom has completed the repurchase of 24 million
shares of its common stock. The shares were repurchased from the open market
over the recent ten months pursuant to agreements with financial institutions.
Approximately $153 million of the share repurchases were funded with proceeds
from the 1998 issuance of transitional trust notes.

  At September 30, 2000, shares of Unicom common stock were reserved for the
following purposes:

<TABLE>
      <S>                                                              <C>
      Long-Term Incentive Plan........................................ 1,041,015
      Employee Stock Purchase Plan....................................   284,940
      Shareholder Rights Plan.........................................   400,000
      Exchange for ComEd common stock not held by Unicom..............    86,040
      1996 Directors' Fee Plan........................................   135,791
                                                                       ---------
                                                                       1,947,786
                                                                       =========
</TABLE>

  Common stock issued/(reacquired) for the three months, nine months and
twelve months ended September 30, 2000 and 1999 was as follows:

<TABLE>
<CAPTION>
                           Three Months Ended    Nine Months Ended     Twelve Months Ended
                              September 30          September 30           September 30
                          --------------------- ---------------------  ---------------------
                             2000        1999       2000       1999        2000       1999
                          -----------  -------- ------------  -------  ------------  -------
<S>                       <C>          <C>      <C>           <C>      <C>           <C>
Shares of Common Stock
 Issued/(Reacquired):
 Long-Term Incentive
  Plan..................      520,842   154,971    1,190,748  388,186     1,254,063  510,850
 Employee Stock Purchase
  Plan..................          --        --        38,857   45,126        83,231   86,884
 Exchange for ComEd com-
  mon stock not held by
  Unicom................          590       --         1,610   (3,330)        2,486    1,727
 1996 Directors' Fee
  Plan..................        1,085       739       26,668    4,087        28,102    7,088
 Treasury Stock.........   (7,798,100)      --   (49,444,000)     --    (49,444,000)     --
                          -----------  -------- ------------  -------  ------------  -------
                           (7,275,583)  155,710  (48,186,117) 434,069   (48,076,118) 606,549
                          ===========  ======== ============  =======  ============  =======
</TABLE>



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
<TABLE>
<CAPTION>
                          Three Months Ended   Nine Months Ended     Twelve Months Ended
                             September 30         September 30           September 30
                          -----------------------------------------  ---------------------
                             2000      1999      2000        1999       2000        1999
                          ----------  -------------------  --------  -----------  --------
                                             (Thousands of Dollars)
<S>                       <C>         <C>     <C>          <C>       <C>          <C>
Changes in Common Stock
 Accounts:
 Total shares issued....  $   18,492  $ 3,756 $    30,935  $  8,533  $    43,691  $ 14,463
 Net cash settlement of
  forward share repur-
  chase contract........         --       --          --    (16,454)         --    (16,454)
 Share repurchases......    (374,434)     --   (1,953,008)      --    (1,953,008)      --
 Shares held by trustee
  for Unicom Stock Bonus
  Deferral Plan.........         --       --          --        --           --      7,428
 Other..................         (27)       7          78       144           87       (51)
                          ----------  ------- -----------  --------  -----------  --------
                          $ (355,969) $ 3,763 $(1,921,995) $ (7,777) $(1,909,230) $  5,386
                          ==========  ======= ===========  ========  ===========  ========
</TABLE>

  At September 30, 2000 and December 31, 1999, 75,082 and 75,692,
respectively, ComEd common stock purchase warrants were outstanding. The
warrants entitle the holders to convert such warrants into common stock of
ComEd at a conversion rate of one share of common stock for three warrants.

  (7) Stock Option Awards/Employee Stock Purchase Plan. Unicom has a
nonqualified stock option awards program under its Long-Term Incentive Plan.
The stock option awards program was adopted by Unicom in July 1996 to reward
valued employees responsible for, or contributing to, the management, growth
and profitability of Unicom and its subsidiaries. The stock options granted
expire ten years from their grant date. One-third of the shares subject to the
options vest on each of the first three anniversaries of the option grant
date. In addition, the stock options will become fully vested immediately if
the holder dies, retires, is terminated by the Company, other than for cause,
or qualifies for long-term disability. Options granted before July 22, 1998
also vest in full upon a change in control, while options granted on or after
July 22, 1998 vest in full if the option holder is terminated within 24 months
after a change of control.

  Stock option transactions through September 30, 2000 are summarized as
follows:

<TABLE>
<CAPTION>
                                                     Number of  Weighted Average
                                                      Options    Exercise Price
                                                     ---------  ----------------
<S>                                                  <C>        <C>
Outstanding as of December 31, 1997................  2,291,378      $23.810
Granted during the year............................  1,379,525       35.234
Exercised during the year..........................   (404,082)      24.244
Expired/cancelled during the year..................   (123,928)      25.715
                                                     ---------
Outstanding as of December 31, 1998................  3,142,893       28.694
Granted during the year............................  1,853,050       35.750
Exercised during the year..........................   (313,231)      24.102
Expired/cancelled during year......................   (179,076)      33.551
                                                     ---------
Outstanding as of December 31, 1999................  4,503,636       31.723
Granted during the nine months ended September 30,
 2000..............................................  2,213,100       37.063
Exercised during the nine months ended September
 30, 2000..........................................   (874,785)      27.834
Expired/cancelled during the nine months ended Sep-
 tember 30, 2000...................................   (140,598)      35.710
                                                     ---------
Outstanding as of September 30, 2000...............  5,701,353       34.294
                                                     =========
</TABLE>

  Of the stock options outstanding at September 30, 2000, 2,075,749 had vested
with a weighted average exercise price of $30.77.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  The fair value of each stock option is estimated on the date of grant using
the Black-Scholes option-pricing model with the following weighted average
assumptions:

<TABLE>
<CAPTION>
                                                         Stock Option Grant Date
                                                         -----------------------
                                                          2000    1999    1998
                                                         ------- ------- -------
<S>                                                      <C>     <C>     <C>
Expected option life.................................... 7 years 7 years 7 years
Dividend yield..........................................   4.30%   4.50%   4.54%
Expected volatility.....................................  21.97%  23.02%  21.95%
Risk-free interest rate.................................   6.76%   4.83%   5.58%
</TABLE>

  The estimated weighted average fair value for each stock option granted in
the first three quarters of 2000 and in 1999 and 1998 was $8.19, $6.48 and
$6.62, respectively.

  The ESPP was terminated on June 28, 2000 by Unicom's Board of Directors in
anticipation of the merger with PECO. The ESPP allowed employees to purchase
Unicom common stock at a ten percent discount from market value. Substantially
all of the employees of Unicom, ComEd and their subsidiaries were eligible to
participate in the ESPP. Unicom issued 83,231 and 86,884 shares of common
stock for the twelve months ended September 30, 2000 and 1999, respectively,
under the ESPP at a weighted average annual purchase price of $35.02 and
$34.34, respectively.

  Unicom has adopted the disclosure-only provisions of SFAS No. 123. For
financial reporting purposes, Unicom has adopted APB No. 25 and has taken into
consideration FASB Interpretation No. 44 of APB No. 25, and thus no
compensation cost has been recognized for the stock option awards program or
ESPP. If Unicom had recorded compensation expense for the stock options
granted and the shares of common stock issued under the ESPP in accordance
with SFAS No. 123 using the fair value based method of accounting, the
additional charge to operations would have been $4 million (after-tax), or
$0.02 per common share (diluted), and $4 million (after-tax), or $0.02 per
common share (diluted), for the twelve months ended September 30, 2000 and
1999, respectively.

  (8) ComEd Preferred and Preference Stocks Without Mandatory Redemption
Requirements. During the twelve months ended September 30, 2000 and 1999, no
shares and 13,499,549 shares of preferred or preference stock without
mandatory redemption requirements were redeemed, respectively, and no shares
were issued. All of the outstanding shares of Series $1.425 preferred stock
were redeemed on August 1, 2000. The redemption price was $42 per share, plus
accrued and unpaid dividends.

  (9) ComEd Preference Stock Subject to Mandatory Redemption
Requirements. During the twelve months ended September 30, 2000 and 1999, no
shares of ComEd preference stock subject to mandatory redemption requirements
were issued. During the twelve months ended September 30, 2000 and 1999,
700,000 shares and 1,056,060 shares, respectively, of ComEd preference stock
subject to mandatory redemption requirements were reacquired to meet sinking
fund requirements or were part of the early redemption in 1999. There were
700,000 shares of Series $6.875 preference stock outstanding at December 31,
1999, at an aggregate stated value of $69 million. This series was non-
callable and was redeemed on May 1, 2000.

  (10) ComEd-Obligated Mandatorily Redeemable Preferred Securities of
Subsidiary Trusts Holding Solely ComEd's Subordinated Debt Securities. In
September 1995, ComEd Financing I, a wholly-owned subsidiary trust of ComEd,
issued 8,000,000 of its 8.48% ComEd-obligated mandatorily redeemable preferred
securities. The sole asset of ComEd Financing I is $206.2 million principal
amount of ComEd's 8.48% subordinated deferrable interest notes due September
30, 2035. In January 1997, ComEd Financing II, a wholly-owned subsidiary trust
of ComEd, issued 150,000 of its 8.50% ComEd-obligated mandatorily redeemable
capital securities. The sole asset of ComEd


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
Financing II is $154.6 million principal amount of ComEd's 8.50% subordinated
deferrable interest debentures due January 15, 2027. There is a full and
unconditional guarantee by ComEd of the Trusts' obligations under the
securities issued by the Trusts. However, ComEd's obligations are subordinate
and junior in right of payment to certain other indebtedness of ComEd. ComEd
has the right to defer payments of interest on the subordinated deferrable
interest notes by extending the interest payment period, at any time, for up
to 20 consecutive quarters. Similarly, ComEd has the right to defer payments
of interest on the subordinated deferrable interest debentures by extending
the interest payment period, at any time, for up to ten consecutive semi-
annual periods. If interest payments on the subordinated deferrable interest
notes or debentures are so deferred, distributions on the preferred securities
will also be deferred. During any deferral, distributions will continue to
accrue with interest thereon. In addition, during any such deferral, ComEd may
not declare or pay any dividend or other distribution on, or redeem or
purchase, any of its capital stock.

  The subordinated deferrable interest notes are redeemable by ComEd, in whole
or in part, from time to time, on or after September 30, 2000, and with
respect to the subordinated deferrable interest debentures, on or after
January 15, 2007, or at any time in the event of certain income tax
circumstances. If the subordinated deferrable interest notes or debentures are
redeemed, the Trusts must redeem preferred securities having an aggregate
liquidation amount equal to the aggregate principal amount of the subordinated
deferrable interest notes or debentures so redeemed. In the event of the
dissolution, winding up or termination of the Trusts, the holders of the
preferred securities will be entitled to receive, for each preferred security,
a liquidation amount of $25 for the securities of ComEd Financing I and $1,000
for the securities of ComEd Financing II, plus accrued and unpaid
distributions thereon, including interest thereon, to the date of payment,
unless in connection with the dissolution, the subordinated deferrable
interest notes or debentures are distributed to the holders of the preferred
securities.

  (11) Long-Term Debt. ComEd initiated the issuance of $3.4 billion of
transitional trust notes through its SPEs, ComEd Funding and ComEd Funding
Trust, in the fourth quarter of 1998. The current amount outstanding is as
follows:

<TABLE>
<CAPTION>
              Series                                         Principal Amount
      ------------------------                            ----------------------
                                                          (Thousands of Dollars)
      <S>                                                 <C>
      5.29% due June 25, 2001............................       $  254,541
      5.34% due March 25, 2002...........................          258,861
      5.39% due June 25, 2003............................          421,139
      5.44% due March 25, 2005...........................          598,511
      5.63% due June 25, 2007............................          761,489
      5.74% due December 25, 2008........................          510,000
                                                                ----------
                                                                $2,804,541
                                                                ==========
</TABLE>

  For accounting purposes, the liabilities of ComEd Funding Trust for the
transitional trust notes are reflected as long-term debt on the Consolidated
Balance Sheets of Unicom and ComEd.

  The proceeds, net of transaction costs, from the transitional trust notes
were used, as required, to redeem debt and equity. During 1999, ComEd redeemed
or reacquired $1,101 million of long-term debt.

  Sinking fund requirements and scheduled maturities remaining through 2004
for ComEd's first mortgage bonds, transitional trust notes, sinking fund
debentures and other long-term debt outstanding at September 30, 2000, after
deducting deposits made for the retirement of sinking fund debentures, are
summarized as follows: 2000--$86 million; 2001--$346 million; 2002--$845
million; 2003--$695 million; and 2004--$577 million.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                    NOTES TO FINANCIAL STATEMENTS--Continued

  At September 30, 2000, ComEd's outstanding first mortgage bonds maturing
through 2004 were as follows:

<TABLE>
<CAPTION>
                   Series                                    Principal Amount
      --------------------------------                    ----------------------
                                                          (Thousands of Dollars)
      <S>                                                 <C>
      7 3/8% due September 15, 2002......................        $200,000
      6 5/8% due July 15, 2003...........................         100,000
      5 3/10% due January 15, 2004.......................          26,000
                                                                 --------
                                                                 $326,000
                                                                 ========
</TABLE>

  Other long-term debt outstanding at September 30, 2000 is summarized as
follows:

<TABLE>
<CAPTION>
                                          Principal
              Debt Security                 Amount                 Interest Rate
----------------------------------------  ---------- ------------------------------------------
                                          (Thousands
                                              of
                                           Dollars)
<S>                                       <C>        <C>
Unicom--
 Loans Payable:
 Loan due January 1, 2003                 $    4,212 Interest rate of 8.31%
 Loan due January 1, 2004                      5,021 Interest rate of 8.44%
 Loan due January 15, 2009                     5,228 Interest rate of 8.30%
 Loan due January 15, 2009                     6,568 Interest rate of 8.55%
 Loan due January 15, 2010                     3,632 Interest rate of 8.65%
 Loan due January 15, 2010                     6,880 Interest rate of 8.88%
 Loan due July 15, 2010                        8,703 Interest rate of 7.98%
                                          ----------
                                          $   40,244
                                          ----------
ComEd--
 Notes:
 Senior note due September 30, 2002       $  200,000 Interest rate of 7.158%
 Senior note due September 30, 2003          250,000 Interest rate of 7.284%
 Medium Term Notes, Series 3N due vari-
  ous dates through October 15, 2004         156,000 Interest rates ranging from 9.17% to 9.20%
 Notes due January 15, 2004                  150,000 Interest rate of 7.375%
 Notes due October 15, 2005                  235,000 Interest rate of 6.40%
 Notes due January 15, 2007                  150,000 Interest rate of 7.625%
 Notes due July 15, 2018                     225,000 Interest rate of 6.95%
                                          ----------
                                          $1,366,000
                                          ----------
 Purchase Contract Obligation
 due April 30, 2005                       $      254 Interest rate of 3.00%
                                          ----------
Total ComEd                               $1,366,254
                                          ----------
Unicom Enterprises--
 Notes:
 Unicom Thermal Guaranteed Senior Note
  due January 31, 2020                    $   28,000 Interest rate of 9.09%
 Northwind Midway Guaranteed Senior Note
  due June 30, 2023                           11,423 Interest rate of 7.68%
 Unicom Thermal Obligation due April 1,
  2015                                         1,124 Interest rate of 8.00%
 Unicom Mechanical Services Notes
  due various dates through July 15,
  2003                                           156 Interest rate ranging from 8.50% to 9.25%
                                          ----------
Total Unicom Enterprises                  $   40,703
                                          ----------
Total Unicom                              $1,447,201
                                          ==========
</TABLE>



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
  Long-term debt maturing within one year has been included in current
liabilities.

  ComEd's outstanding first mortgage bonds are secured by a lien on
substantially all property and franchises, other than expressly excepted
property, owned by ComEd.

  Unicom Thermal redeemed the $115.8 million outstanding balance of the 7.38%
unsecured guaranteed senior Note on July 12, 2000. Unicom Thermal recorded an
extraordinary loss related to early redemption premiums paid and the write-off
of unamortized debt expenses, which reduced Unicom's net income on common
stock by approximately $3.5 million (after-tax) in the third quarter of 2000.

  In May 2000, Northwind Chicago issued $28 million of 9.09% guaranteed senior
Notes due January 31, 2020, the proceeds of which will be used primarily to
finance certain project construction costs. The Notes were guaranteed by
Unicom and included certain covenants with respect to Unicom and Northwind
Chicago's operations. Pursuant to Unicom's merger with PECO, Exelon assumed
Unicom's guarantee obligation with respect to the Notes as a matter of law.

  In June 1999, Northwind Midway issued $11.4 million of 7.68% guaranteed
senior Notes due June 2023, the proceeds of which will be used primarily to
finance certain project construction costs. The Notes were guaranteed by
Unicom and include certain covenants with respect to Unicom and Northwind
Midway's operations. Such covenants include, among other things, a requirement
that Unicom and its consolidated subsidiaries own no less than 65% of the
voting membership interest of Northwind Midway. Pursuant to Unicom's merger
with PECO, Exelon assumed Unicom's guarantee obligation with respect to the
Notes as a matter of law.

  (12) Lines of Credit. ComEd had total unused bank lines of credit of $800
million at September 30, 2000. Of that amount, $500 million expires on
December 15, 2000 and $300 million expires on December 17, 2002. The interest
rate is set at the time of a borrowing and is based on several floating rate
bank indices plus a spread which is dependent upon the credit rating of
ComEd's outstanding first mortgage bonds or on a prime interest rate. ComEd is
obligated to pay commitment and facility fees with respect to the line of
credit.

  (13) Disposal of Spent Nuclear Fuel. Under the Nuclear Waste Policy Act of
1982, the DOE is responsible for the selection and development of repositories
for, and the disposal of, spent nuclear fuel and high-level radioactive waste.
ComEd, as required by that Act, has entered into a contract with the DOE to
provide for the disposal of spent nuclear fuel and high-level radioactive
waste from ComEd's nuclear generating stations. The contract with the DOE
requires ComEd to pay the DOE a one-time fee applicable to nuclear generation
through April 6, 1983 of $277 million, with interest to date of payment, and a
fee payable quarterly equal to one mill per kilowatthour of nuclear-generated
and sold electricity after April 6, 1983. Pursuant to the contract, ComEd has
elected to pay the one-time fee, with interest, just prior to the first
delivery of spent nuclear fuel to the DOE. The liability for the one-time fee
and the related interest is reflected on the Consolidated Balance Sheets. The
contract also provided for acceptance by the DOE of such materials to begin in
January 1998; however, that date was not met by the DOE and is expected to be
delayed significantly. The DOE's current estimate for opening a facility to
accept such waste is 2010. This extended delay in spent nuclear fuel
acceptance by the DOE has led to ComEd's consideration of additional dry
storage alternatives. On July 30, 1998, ComEd filed a complaint against the
United States in the United States Court of Federal Claims seeking to recover
damages caused by the DOE's failure to honor its contractual obligation to


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
begin disposing of spent nuclear fuel in January 1998. On September 14, 2000,
the Judge hearing ComEd's case lifted a stay originally imposed on November 5,
1999. The court further ordered the government to file a response to ComEd's
motion for summary judgment on the issue of the DOE's liability for breaching
its contract with ComEd.

  (14) Fair Value of Financial Instruments. The following methods and
assumptions were used to estimate the fair value of financial instruments
either held, or issued and outstanding. The disclosure of such information
does not purport to be a market valuation of Unicom and subsidiary companies
as a whole. The impact of any realized or unrealized gains or losses related
to such financial instruments on the financial position or results of
operations of Unicom and subsidiary companies is primarily dependent on the
treatment authorized under future ComEd ratemaking proceedings.

  Investments. Securities included in the nuclear decommissioning funds have
been classified and accounted for as "available for sale" securities. The
estimated fair value of the nuclear decommissioning funds, as determined by
the trustee and based on published market data, as of September  30, 2000 and
December 31, 1999 was as follows:

<TABLE>
<CAPTION>
                                September 30, 2000               December 31, 1999
                         -------------------------------- --------------------------------
                                    Unrealized                       Unrealized
                                      Gains/                           Gains/
                         CostBasis   (Losses)  Fair Value Cost Basis  (Losses)  Fair Value
                         ---------- ---------- ---------- ---------- ---------- ----------
                                              (Thousands of Dollars)
<S>                      <C>        <C>        <C>        <C>        <C>        <C>
Short-term investments.. $   33,583  $    --   $   33,583 $   41,362  $     95  $   41,457
U.S. Government and
 Agency issues..........    244,797     8,761     253,558    245,399    (1,993)    243,406
Municipal bonds.........    394,946     6,027     400,973    383,816      (940)    382,876
Corporate bonds.........    212,357    (2,416)    209,941    196,942    (5,699)    191,243
Common stock............    911,799   677,324   1,589,123    832,802   732,893   1,565,695
Other...................    162,879    11,963     174,842    125,072    (3,209)    121,863
                         ----------  --------  ---------- ----------  --------  ----------
                         $1,960,361  $701,659  $2,662,020 $1,825,393  $721,147  $2,546,540
                         ==========  ========  ========== ==========  ========  ==========
</TABLE>

  At September 30, 2000, the debt securities held by the nuclear
decommissioning funds had the following maturities:

<TABLE>
<CAPTION>
                                                           Cost Basis Fair Value
                                                           ---------- ----------
                                                               (Thousands of
                                                                 Dollars)
      <S>                                                  <C>        <C>
      Within 1 year.......................................  $ 31,303   $ 31,627
      1 through 5 years...................................   325,139    326,986
      5 through 10 years..................................   222,319    226,044
      Over 10 years.......................................   425,776    429,513
</TABLE>


<PAGE>
                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  The net earnings of the nuclear decommissioning funds, which are recorded in
the accumulated provision for depreciation, for the three months, nine months
and twelve months ended September 30, 2000 and 1999 were as follows:
<TABLE>
<CAPTION>
                          Three Months Ended    Nine Months Ended      Twelve Months Ended
                             September 30         September 30            September 30
                          ------------------  ----------------------  ---------------------
                            2000     1999        2000        1999        2000       1999
                          -------- ---------  ----------  ----------  ---------- ----------
                                              (Thousands of Dollars)
<S>                       <C>      <C>        <C>         <C>         <C>        <C>
Gross proceeds from
 sales of
 securities.............  $359,346 $ 399,024  $1,263,586  $1,241,887  $1,786,700 $1,637,011
Less cost based on spe-
 cific
 identification.........   332,394   386,970   1,198,132   1,205,155   1,711,128  1,598,484
                          -------- ---------  ----------  ----------  ---------- ----------
Realized gains/(losses)
 on sales of
 securities.............  $ 26,952 $  12,054  $   65,454  $   36,732  $   75,571 $   38,527
Other realized fund
 earnings, net of
 expenses...............    12,126    12,186      30,113      43,002      50,038     59,983
                          -------- ---------  ----------  ----------  ---------- ----------
Total realized net earn-
 ings of the funds......  $ 39,078 $  24,240  $   95,567  $   79,734  $  125,609 $   98,510
Unrealized
 gains/(losses).........     6,056  (135,210)    (19,488)    (46,472)    128,494    142,147
                          -------- ---------  ----------  ----------  ---------- ----------
 Total net earnings of
  the funds.............  $ 45,134 $(110,970) $   76,079  $   33,262  $  254,103 $  240,657
                          ======== =========  ==========  ==========  ========== ==========
</TABLE>
  Securities held by certain trusts, which were established to provide for
supplemental retirement benefits and executive medical claims, have been
classified and accounted for as "available for sale." The estimated fair value
of these securities, as determined by the trustee and based on published
market data, as of September 30, 2000 was as follows:
<TABLE>
<CAPTION>
                                                      Cost   Unrealized  Fair
                                                      Basis     Gain     Value
                                                     ------- ---------- -------
                                                       (Thousands of Dollars)
<S>                                                  <C>     <C>        <C>
Short-term investments.............................. $   279  $   --    $   279
Registered investment companies.....................  21,955   13,258    35,213
                                                     -------  -------   -------
                                                     $22,234  $13,258   $35,492
                                                     =======  =======   =======
</TABLE>
  Current Assets. Cash, temporary cash investments, cash held for redemption
of securities and other cash investments, which include U.S. Government
obligations and other short-term marketable securities, and special deposits,
are stated at cost, which approximates their fair value because of the short
maturity of these instruments. The securities included in these categories
have been classified as "available for sale" securities.

  Capitalization. The estimated fair values of ComEd preferred and preference
stocks, ComEd-obligated mandatorily redeemable preferred securities of
subsidiary trusts holding solely ComEd's subordinated debt securities,
transitional trust notes and long-term debt were obtained from an independent
consultant. The estimated fair values, which include the current portions of
redeemable preference stock and long-term debt but exclude accrued interest
and dividends, as of September 30, 2000 and December 31, 1999 were as follows:
<TABLE>
<CAPTION>
                                September 30, 2000               December 31, 1999
                         -------------------------------- ---------------------------------
                                    Unrealized                       Unrealized
                          Carrying    Gains/               Carrying    Gains/       Fair
                           Value     (Losses)  Fair Value   Value     (Losses)     Value
                         ---------- ---------- ---------- ---------- ----------  ----------
                                              (Thousands of Dollars)
<S>                      <C>        <C>        <C>        <C>        <C>         <C>
ComEd preferred and
 preference stocks...... $      --   $    --   $      --  $   71,265 $      58   $   71,323
ComEd-obligated
 mandatorily redeemable
 preferred securities of
 subsidiary trusts
 holding solely ComEd's
 subordinated debt
 securities............. $  350,000  $(21,467) $  328,533 $  350,000 $ (10,595)  $  339,405
Transitional trust
 notes.................. $2,794,121  $(98,119) $2,696,002 $3,057,112 $(163,600)  $2,893,512
Long-term debt.......... $4,690,093  $  6,925  $4,697,018 $4,810,108 $ (23,136)  $4,786,972
</TABLE>


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  Current Liabilities. The carrying value of notes payable, which consists of
commercial paper and bank loans maturing within one year, approximates the
fair value because of the short maturity of these instruments. See
"Capitalization" above for a discussion of the fair value of the current
portion of long-term debt and redeemable preference stock.

  Other Noncurrent Liabilities. The carrying value of accrued spent nuclear
fuel disposal fee and related interest represents the settlement value as of
September 30, 2000 and December 31, 1999; therefore, the carrying value is
equal to the fair value.

  (15) Pension and Postretirement Benefits. As of September 30, 2000, ComEd
had a qualified non-contributory defined benefit pension plan which covers all
regular employees of ComEd and certain of Unicom's subsidiaries. Benefits
under this plan reflect each employee's compensation, years of service and age
at retirement. Funding is based upon actuarially determined contributions that
take into account the amount deductible for income tax purposes and the
minimum contribution required under the Employee Retirement Income Security
Act of 1974, as amended. The September 30, 2000 and December 31, 1999 pension
liabilities and related data were determined using the January 1, 1999
actuarial valuation. Additionally, ComEd maintains a nonqualified supplemental
retirement plan which covers any excess pension benefits that would be payable
to management employees under the qualified plan but which are limited by the
Internal Revenue Code. In 1998, Indiana Company's qualified defined benefit
pension plan was merged into ComEd's pension plan as a result of the sale of
Indiana Company's State Line Station and the transfer of its remaining
employees to ComEd.

  ComEd and certain of Unicom's subsidiaries provide certain postretirement
medical, dental and vision care, and life insurance for retirees and their
dependents and for the surviving dependents of eligible employees and
retirees. Generally, the employees become eligible for postretirement benefits
if they retire no earlier than age 55 with ten years of service. The liability
for postretirement benefits is funded through trust funds based upon
actuarially determined contributions that take into account the amount
deductible for income tax purposes. The health care plans are contributory,
funded jointly by the companies and the participating retirees. The September
30, 2000 and December 31, 1999 postretirement benefit liabilities and related
data were determined using the January 1, 1999 actuarial valuations.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  Reconciliations of the beginning and ending balances of the projected
pension benefit obligation and the accumulated postretirement benefit
obligation, and the funded status of these plans for the nine months ended
September 30, 2000 and twelve months ended December 31, 1999 were as follows:

<TABLE>
<CAPTION>
                              Nine Months Ended         Twelve Months Ended
                             September 30, 2000         December  31, 1999
                          -------------------------- --------------------------
                                          Other                      Other
                           Pension    Postretirement  Pension    Postretirement
                           Benefits      Benefits     Benefits      Benefits
                          ----------  -------------- ----------  --------------
                                        (Thousands of Dollars)
Change in benefit
obligation
-----------------
<S>                       <C>         <C>            <C>         <C>
Benefit obligation at
 beginning of period....  $4,124,000    $1,169,000   $4,326,000    $1,236,000
Service cost............      53,000        25,000      120,000        41,000
Interest cost...........     232,000        66,000      285,000        82,000
Plan participants' con-
 tributions.............         --          3,000          --          4,000
Actuarial loss/(gain)...       6,000        (1,000)    (428,000)     (170,000)
Benefits paid...........    (195,000)      (43,000)    (241,000)      (51,000)
Special termination ben-
 efits..................         --          6,000       62,000        27,000
                          ----------    ----------   ----------    ----------
 Benefit obligation at
  end of period.........  $4,220,000    $1,225,000   $4,124,000    $1,169,000
                          ----------    ----------   ----------    ----------
<CAPTION>
Change in plan assets
---------------------
<S>                       <C>         <C>            <C>         <C>
Fair value of plan as-
 sets at beginning of
 period.................  $4,270,000    $  948,000   $4,015,000    $  865,000
Actual return on plan
 assets.................      78,000        20,000      493,000       106,000
Employer contribution...       4,000           --         3,000        24,000
Plan participants' con-
 tributions.............         --          3,000          --          4,000
Benefits paid...........    (195,000)      (43,000)    (241,000)      (51,000)
                          ----------    ----------   ----------    ----------
 Fair value of plan as-
  sets at end of period.  $4,157,000    $  928,000   $4,270,000    $  948,000
                          ----------    ----------   ----------    ----------
Plan assets
 greater/(less) than
 benefit obligation.....  $  (63,000)   $ (297,000)  $  146,000    $ (221,000)
Unrecognized net actuar-
 ial gain...............    (305,000)     (479,000)    (534,000)     (538,000)
Unrecognized prior serv-
 ice cost/(asset).......     (10,000)       38,000      (11,000)       41,000
Unrecognized transition
 obligation/(asset).....     (71,000)      261,000      (79,000)      276,000
                          ----------    ----------   ----------    ----------
 Accrued liability for
  benefits..............  $ (449,000)   $ (477,000)  $ (478,000)   $ (442,000)
                          ==========    ==========   ==========    ==========
</TABLE>

  The assumed discount rate used to determine the benefit obligation as of
September 30, 2000 and December 31, 1999 was 7.75%. The fair value of plan
assets excludes $26 million and $25 million held in grantor trust as of
September 30, 2000 and December 31, 1999, respectively, for the payment of
benefits under the supplemental plan and $9 million and $9 million held in a
grantor trust as of September 30, 2000 and December 31, 1999, respectively,
for the payment of postretirement medical benefits.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  The components of pension and other postretirement benefit costs, portions
of which were recorded as components of construction costs, for the three
months, nine months and twelve months ended September 30, 2000 were as
follows:

<TABLE>
<CAPTION>
                          Three Months Ended     Nine Months Ended    Twelve Months Ended
                             September 30          September 30          September 30
                          --------------------  --------------------  --------------------
                            2000       1999       2000       1999       2000       1999
                          ---------  ---------  ---------  ---------  ---------  ---------
                                            (Thousands of Dollars)
<S>                       <C>        <C>        <C>        <C>        <C>        <C>
Pension Benefit Costs
---------------------
Service cost............  $  12,000  $  31,000  $  53,000  $  94,000  $  79,000  $ 116,000
Interest cost on pro-
 jected benefit obliga-
 tion...................     78,000     71,000    232,000    213,000    304,000    278,000
Expected return on plan
 assets.................    (98,000)   (90,000)  (295,000)  (271,000)  (386,000)  (356,000)
Amortization of transi-
 tion asset.............     (3,000)    (3,000)    (8,000)    (9,000)   (12,000)   (12,000)
Amortization of prior
 service asset..........      1,000     (1,000)    (1,000)    (3,000)    (2,000)    (4,000)
Recognized loss/(gain)..     (3,000)     1,000     (5,000)     3,000     (5,000)     4,000
Curtailment loss........        --         --         --         --      16,000        --
                          ---------  ---------  ---------  ---------  ---------  ---------
 Net periodic benefit
  cost..................  $ (13,000) $   9,000  $ (24,000) $  27,000  $  (6,000) $  26,000
                          =========  =========  =========  =========  =========  =========
Other Postretirement
 Benefit Costs
--------------------
Service cost............  $   9,000  $  10,000  $  25,000  $  31,000  $  35,000  $  42,000
Interest cost on accumu-
 lated benefit
 obligation.............     22,000     21,000     66,000     62,000     86,000     84,000
Expected return on plan
 assets.................    (21,000)   (19,000)   (64,000)   (56,000)   (84,000)   (73,000)
Amortization of transi-
 tion obligation........      5,000      6,000     15,000     17,000     20,000     22,000
Amortization of prior
 service cost...........      1,000      1,000      3,000      3,000      4,000      4,000
Recognized gain.........     (5,000)    (3,000)   (16,000)    (9,000)   (21,000)    (9,000)
Severance plan cost.....      6,000        --       6,000      1,000      6,000      5,000
Curtailment loss........        --         --         --         --      35,000        --
                          ---------  ---------  ---------  ---------  ---------  ---------
 Net periodic benefit
  cost..................  $  17,000  $  16,000  $  35,000  $  49,000  $  81,000  $  75,000
                          =========  =========  =========  =========  =========  =========
</TABLE>

  In accounting for the pension costs and other postretirement benefit costs
under the plans, the following weighted average actuarial assumptions were
used for the periods during 2000, 1999 and 1998:

<TABLE>
<CAPTION>
                                                                     Other
                                                                Postretirement
                                             Pension Benefits       Benefits
                                             ----------------- -----------------
                                             2000  1999  1998  2000  1999  1998
                                             ----- ----- ----- ----- ----- -----
<S>                                          <C>   <C>   <C>   <C>   <C>   <C>
Annual discount rate.......................  7.75% 6.75% 7.00% 7.75% 6.75% 7.00%
Annual long-term rate of return on plan as-
 sets......................................  9.50% 9.25% 9.50% 9.23% 8.97% 9.20%
Annual rate of increase in future compensa-
 tion levels...............................  4.00% 4.00% 4.00%   --    --    --
</TABLE>

  The pension and other postretirement benefit curtailment losses for the
twelve months ended September 30, 2000 represent the recognition of prior
service costs and transition obligations, and an increase in the benefit
obligations resulting from special termination benefits, related to the
reduction in the number of employees due to ComEd's December 1999 sale of the
fossil stations.

  The health care cost trend rates used to measure the expected cost of the
postretirement medical benefits are assumed to be 7.5% for pre-Medicare
recipients and 5.5% for Medicare recipients for 2000. Those rates are assumed
to decrease in 0.5% annual increments to 5% for the years 2005 and 2001,
respectively, and to remain level thereafter. The health care cost trend
rates, used to measure the expected cost of postretirement dental and vision
benefits, are a level 3.5% and 2.0% per year, respectively. Assumed health
care cost trend rates have a significant effect on the amounts reported


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
for the health care plans. A one percentage point change in the assumed health
care cost trend rates would have the following effects:

<TABLE>
<CAPTION>
                                                    1 Percentage   1 Percentage
                                                   Point Increase Point Decrease
                                                   -------------- --------------
                                                      (Thousands of Dollars)
<S>                                                <C>            <C>
Effect on total annual service and interest cost
 components......................................     $ 23,000      $ (18,000)
Effect on postretirement benefit obligation as of
 September 30, 2000..............................      195,000       (155,000)
</TABLE>

  In addition, an employee savings and investment plan is available to
eligible employees of ComEd and certain of its and Unicom's subsidiaries.
Under the plan, each participating employee may contribute up to 20% of such
employee's base pay and the participating companies match the first 6% of such
contribution equal to 100% of the first 2% of contributed base salary, 70% of
the next 3% of contributed base salary and 25% of the next 1% of contributed
base salary. The participating companies' contributions were $7 million and $9
million for the three months ended September 30, 2000 and 1999, respectively,
$23 million and $24 million for nine months ended September 30, 2000 and 1999,
respectively, and $31 million and $32 million for the twelve months ended
September 30, 2000 and 1999, respectively.

  (16) Separation Plan Costs. O&M expenses included $33 million and $2 million
for the three months ended September 30, 2000 and 1999, respectively, $47
million and $7 million for the nine months ended September 30, 2000 and 1999,
respectively, and $50 million and $23 million for the twelve months ended
September 30, 2000 and 1999, respectively, for costs related to voluntary
separation offers to certain employees of ComEd, other than costs related to
the fossil plant sale, as well as certain other employee-related costs. Such
costs resulted in charges of $20 million (after-tax), or $0.11 per common
share (diluted) and $1 million (after-tax), or less than $0.01 per common
share (dilutive) for the three months ended September 30, 2000 and 1999,
respectively, $28 million (after-tax), or $0.15 per common share (diluted),
and $4 million (after-tax), or $0.02 per common share (diluted), for the nine
months ended September 30, 2000 and 1999, respectively, and $30 million
(after-tax), or $0.16 per common share (diluted), and $14 million (after-tax),
or $0.06 per common share (diluted), for the twelve months ended September 30,
2000 and 1999, respectively. See Note 4 regarding employee separation costs
related to the fossil plant sale.

  (17) Income Taxes. The components of the net deferred income tax liability
at September 30, 2000 and December 31, 1999 were as follows:

<TABLE>
<CAPTION>
                                                      September 30, December 31,
                                                          2000          1999
                                                      ------------- ------------
                                                        (Thousands of Dollars)
<S>                                                   <C>           <C>
Deferred income tax liabilities:
 Accelerated cost recovery and liberalized deprecia-
  tion, net of removal costs........................   $2,632,492    $2,815,972
 Overheads capitalized..............................      152,271       159,836
 Deferred gain on sale of fossil stations...........      458,472           --
 Involuntary conversion.............................      613,449           --
 Repair allowance...................................      213,020       221,502
 Regulatory assets recoverable through future rates.      701,714       688,946
Deferred income tax assets:
 Postretirement benefits............................     (378,449)     (376,538)
 Unamortized investment tax credits.................     (154,588)     (161,756)
 Regulatory liabilities to be settled through future
  rates.............................................     (580,991)     (596,157)
 Nuclear plant closure..............................       (5,455)       (5,456)
 Other--net.........................................     (271,428)     (321,522)
                                                       ----------    ----------
Net deferred income tax liability...................   $3,380,507    $2,424,827
                                                       ==========    ==========
</TABLE>


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  The components of net income tax expense charged to continuing operations
for the three months, nine months and twelve months ended September 30, 2000
and 1999 were as follows:

<TABLE>
<CAPTION>
                          Three Months Ended    Nine Months Ended   Twelve Months Ended
                             September 30         September 30         September 30
                          --------------------  ------------------  --------------------
                            2000       1999       2000      1999       2000       1999
                          ---------  ---------  --------  --------  ----------  --------
                                           (Thousands of Dollars)
<S>                       <C>        <C>        <C>       <C>       <C>         <C>
Operating income:
 Current income taxes...  $ 128,058  $ 193,103  $308,230  $405,482  $1,665,029  $380,183
 Deferred income taxes..    (82,288)   (11,449) (170,157) (100,217) (1,473,022)  (26,052)
 Investment tax credits
  deferred--net.........     (5,499)    (7,021)  (16,498)  (21,063)    (21,263)  (27,856)
Other (income) and
 deductions:
 Current income taxes...     24,497     (5,809)   37,378    (4,057)     41,139     5,160
 Deferred income taxes..        852      6,159    13,694    12,238      27,287    23,787
 Investment tax credits.     (2,153)    (2,153)   (6,458)   (6,133)    (52,064)  (10,768)
                          ---------  ---------  --------  --------  ----------  --------
Net income taxes charged
 to continuing opera-
 tions..................  $  63,467  $ 172,830  $166,189  $286,250  $  187,106  $344,454
                          =========  =========  ========  ========  ==========  ========
</TABLE>

  Provisions for current and deferred federal and state income taxes and
amortization of investment tax credits resulted in the following effective
income tax rates for the three months, nine months and twelve months ended
September 30, 2000 and 1999:

<TABLE>
<CAPTION>
                          Three Months Ended    Nine Months Ended   Twelve Months Ended
                             September 30         September 30         September 30
                          --------------------  ------------------  --------------------
                            2000       1999       2000      1999      2000       1999
                          ---------  ---------  --------  --------  ---------  ---------
                                           (Thousands of Dollars)
<S>                       <C>        <C>        <C>       <C>       <C>        <C>
Net income before
 extraordinary items....  $ 166,631  $ 279,752  $509,276  $496,366  $ 610,155   $607,554
Net income taxes charged
 to continuing
 operations.............     63,467    172,830   166,189   286,250    187,106    344,454
Provision for dividends
 on ComEd preferred and
 preference stocks......        534      1,830     2,773    20,170      6,359     33,991
                          ---------  ---------  --------  --------  ---------  ---------
Pre-tax income before
 extraordinary items and
 provision for
 dividends..............  $ 230,632  $ 454,412  $678,238  $802,786  $ 803,620  $ 985,999
                          =========  =========  ========  ========  =========  =========
Effective income tax
 rate...................       27.5%      38.0%     24.5%     35.7%      23.3%      34.9%
                          =========  =========  ========  ========  =========  =========
</TABLE>


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  The principal differences between net income taxes charged to continuing
operations and the amounts computed at the federal statutory rate of 35% for
the three months, nine months and twelve months ended September 30, 2000 and
1999 were as follows:

<TABLE>
<CAPTION>
                          Three Months Ended   Nine Months Ended   Twelve Months Ended
                             September 30        September 30         September 30
                          -------------------  ------------------  --------------------
                            2000      1999       2000      1999      2000       1999
                          --------- ---------  --------  --------  ---------  ---------
                                           (Thousands of Dollars)
<S>                       <C>       <C>        <C>       <C>       <C>        <C>
Federal income taxes
 computed at statutory
 rate...................  $ 80,721  $ 159,045  $237,384  $280,975  $ 281,267  $ 345,100
Amortization of
 investment tax credits,
 net of deferred income
 taxes..................    (5,234)    (5,907)  (15,702)  (17,525)   (46,391)   (24,782)
State income taxes, net
 of federal income
 taxes..................     8,961     21,958    22,612    37,394     31,137     44,566
Net gain on forward
 share repurchase
 contract...............       --       6,130   (39,575)   (5,566)   (18,619)    (5,566)
Earnings on non-tax
 qualified
 decommissioning fund...    (1,505)      (951)   (2,637)   (3,719)    (7,833)    (3,719)
Differences between book
 and tax accounting,
 primarily property-
 related deductions.....   (19,476)    (7,445)  (35,893)   (5,309)   (52,455)   (11,145)
                          --------  ---------  --------  --------  ---------  ---------
Net income taxes charged
 to continuing
 operations.............  $ 63,467  $ 172,830  $166,189  $286,250  $ 187,106  $ 344,454
                          ========  =========  ========  ========  =========  =========
</TABLE>

  (18) Taxes, Except Income Taxes. Provisions for taxes, except income taxes,
for the three months, nine months and twelve months ended September 30, 2000
and 1999 were as follows:

<TABLE>
<CAPTION>
                          Three Months Ended   Nine Months Ended  Twelve Months Ended
                             September 30        September 30        September 30
                          -------------------  ------------------ --------------------
                            2000      1999       2000      1999     2000       1999
                          --------- ---------  --------  -------- ---------  ---------
                                           (Thousands of Dollars)
<S>                       <C>       <C>        <C>       <C>      <C>        <C>
Illinois public utility
 revenue................  $     --  $    (601) $ (3,685) $  1,296 $  (4,000) $   8,365
Illinois electricity
 distribution tax.......     31,267    32,942    77,985    87,615   104,611    116,061
Municipal utility gross
 receipts...............     24,752    29,832    74,002    80,418    93,285     98,811
Real estate.............     18,325    33,801    94,853    97,034   113,028    122,916
Municipal compensation..     23,781    23,714    64,702    60,515    77,536     78,821
Energy assistance and
 renewable energy
 charge.................      8,629     8,117    26,079    25,562    34,940     33,753
Other--net..............     31,856    16,986    72,421    54,846    88,125     76,520
                          --------- ---------  --------  -------- ---------  ---------
                          $ 138,610 $ 144,791  $406,357  $407,286 $ 507,525  $ 535,247
                          ========= =========  ========  ======== =========  =========
</TABLE>

  See Note 21 for additional information regarding Illinois invested capital
taxes.

  (19) Lease Obligations of Subsidiary Companies.

  Future minimum rental payments at September 30, 2000 for operating leases of
equipment and real property are estimated to aggregate to $280 million,
including $7 million in 2000, $29 million in 2001, $27 million in 2002, $26
million in 2003, $25 million in 2004 and $166 million in 2005-2043.

  (20) Joint Plant Ownership. ComEd has a 75% undivided ownership interest in
the Quad Cities nuclear generating station. Further, ComEd is responsible for
75% of all costs which are charged to appropriate investment and O&M accounts,
and provides its own financing. ComEd's net plant investment, including
construction work in progress, in Quad Cities Station on the Consolidated
Balance Sheets was $39 million at September 30, 2000.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued

  (21) Commitments and Contingent Liabilities. Purchase commitments,
principally related to construction, nuclear fuel, and coal in support of
certain power purchase agreements approximated $839 million at September 30,
2000, comprised of $769 million for ComEd, $11 million for UT Holdings, $50
million for Unicom Energy Services, $1 million for Unicom Distributed Energy
and $8 million for Unicom Power Holdings. In addition, ComEd has substantial
commitments for expected capacity payments and fixed charges related to power
purchase agreements. Upon completion of the fossil plant sale with EME, ComEd
entered into arrangements to assign or settle a substantial portion of its
coal purchase commitments and entered into purchase power agreements with EME.
See "Management's Discussion and Analysis of Financial Condition and Results
of Operations," subcaption "Liquidity and Capital Resources--UTILITY
OPERATIONS--Construction Program," for additional information regarding
ComEd's purchase commitments.

  ComEd is a member of NEIL which provides insurance coverage against property
damage and associated replacement power costs occurring at members' nuclear
generating facilities. All companies insured with NEIL are subject to
retrospective premium adjustments if losses exceed accumulated reserve funds.
Capital has been accumulated in the reserve funds such that ComEd would not be
liable for any single incident. However, ComEd could be subject to assessments
in any policy year for each of three types of coverage provided. The maximum
assessments are approximately $32 million for primary property damage, $20
million for excess property damage and $7 million for replacement power.

  The NRC's indemnity for public liability coverage under the Price-Anderson
Act is supported by a mandatory industry-wide program under which owners of
nuclear generating facilities could be assessed in the event of nuclear
incidents. Based on the number of nuclear reactors with operating licenses,
ComEd would currently be subject to a maximum assessment of $969 million in
the event of an incident, limited to a maximum of $110 million in any calendar
year.

  In addition, ComEd participates in the American Nuclear Insurers Master
Worker Program, which provides coverage for worker tort claims filed for
bodily injury caused by the nuclear energy hazard. This program was modified,
effective January 1, 1998, to provide coverage to all workers whose "nuclear-
related employment" began on or after the commencement date of reactor
operations. ComEd will not be liable for a retrospective assessment under this
new policy. However, ComEd is still subject to a maximum retroactive
assessment of up to $36 million in the event losses incurred under the small
number of policies in the old program exceed accumulated reserves.

  Three of ComEd's wholesale municipal customers filed a complaint and request
for refund with the FERC alleging that ComEd failed to properly adjust their
rates, as provided for under the terms of their electric service contracts, to
track certain refunds made to ComEd's retail customers in the years 1992
through 1994. In the third quarter of 1998, the FERC granted the complaint and
directed that refunds be made, with interest. ComEd filed and was granted a
request for rehearing for purposes of reconsideration with the FERC. If the
order is upheld, ComEd must make refunds within 15 days of the resolution for
rehearing. ComEd's management believes an adequate reserve has been
established in connection with this case.

  During 1989 and 1991, actions were brought in federal and state courts in
Colorado against ComEd and Cotter seeking unspecified damages and injunctive
relief based on allegations that Cotter has permitted radioactive and other
hazardous material to be released from its mill into areas owned or occupied
by the plaintiffs resulting in property damage and potential adverse health
effects. With



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
respect to Cotter, in 1994 a federal jury returned nominal dollar verdicts
against Cotter on eight plaintiffs' claims in the 1989 cases, which verdicts
were upheld on appeal. The remaining claims in the 1989 actions have been
settled and dismissed. On July 15, 1998, a jury verdict was rendered in Dodge
vs. Cotter (United States District Court for the District of Colorado, Civil
Action No. 91-Z-1861), a case relating to 14 of the plaintiffs in the 1991
cases. The verdict against Cotter and in favor of the plaintiffs, after an
amended judgement was issued March 11, 1999, totaled approximately $6 million,
including compensatory and punitive damages, interest and medical monitoring.
Cotter appealed. On February 11, 2000, the Tenth Circuit Court of Appeals
agreed with Cotter, found that the trial judge had erred in critical rulings
and reversed the jury verdict, remanding the case for new trial. A trial
involving the next group of twelve plaintiffs is currently underway in federal
district court in Denver. Although this trial and the other 1991 cases will
necessarily involve the resolution of numerous contested issues of law and
fact, it is ComEd's assessment that these actions will not have a material
impact on its financial position or operations.

  In August of 1999, three class action lawsuits were filed against the
Company related to a series of service interruptions. The two primary events
occurred on July 30 through August 2, 1999. Another significant outage
occurred on August 12, 1999. The outages of July 30, 1999, described as the
Northwest Substation events, began during a period of intense heat and
humidity. On August 12, 1999, in what is described as the Jefferson Substation
event, ComEd interrupted service to customers on the near north and near west
side of the Loop. While major commercial customers were affected, all service
was restored in this event on the same date. The combined effect of these
events resulted in over 168,000 customers losing service for more than 4
hours. The class action complaints have been consolidated and seek to recover
damages for personal injuries and property damage, as well as economic loss
for these events. Further, ComEd initiated expedited claim settlements for
those with primarily food spoilage claims and has paid over $4 million to
date. Conditional class certification has been approved by the Court for the
sole purpose of exploring settlement talks. For purposes of such discussions,
the outage described above, as well as lesser events through August 31, 1999,
will be considered. If talks are not productive, either side can withdraw
unilaterally. The Company has repeatedly declared that it will pay no economic
damages and will vigorously defend against such claims. The lawsuits are
pending in the Circuit Court of Cook County. ComEd filed a motion challenging
the legal sufficiency of the consolidated complaints. On July 21, 2000, the
judge dismissed two of the counts with prejudice, and four others with leave
to replead. The plaintiffs filed an amended complaint on August 29, 2000.
ComEd has again filed a motion seeking dismissal of the pleadings. The
plaintiffs have not yet responded. The next status before the Court is set for
November 10, 2000. Argument on the motion to dismiss will likely occur in
December 2000. A portion of any settlement or verdict may be covered by
insurance and discussions with the carrier are ongoing. ComEd's management
believes adequate reserves have been established in connection with these
cases.

  Following the summer 1999 service interruptions, the ICC opened a three-
phase investigation of the design and reliability of ComEd's transmission and
distribution system. At the conclusion of each phase of the investigation, the
ICC will issue reports that will include specific recommendations for ComEd
and a timetable for executing the recommendations. Although the
recommendations are not legally binding on ComEd, the ICC may enforce the
recommendations through litigation. The report on Phase I of the investigation
was released the week of January 3, 2000, which focused on the outages of July
and August 1999. The first and second of five reports on Phase II and Phase
III, focusing on the transmission and distribution system, were released
during the weeks of June 5 and June 17, respectively. The third report is
anticipated later this year. The investigation is expected to conclude by
early 2001. Since summer 1999, the Company has devoted significant resources
to


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
improving the reliability of its transmission and distribution system. The
Company believes that the likelihood of a successful material claim resulting
from this investigation is remote. The investigation is expected to conclude
by early 2001.

  In 1996, several developers of non-utility generating facilities filed
litigation against various Illinois officials claiming that the enforcement
against those facilities of an amendment to Illinois law removing the
entitlement of those facilities to state-subsidized payments for electricity
sold to ComEd after March 15, 1996 violated their rights under the federal and
state constitutions, and against ComEd for a declaratory order that their
rights under their contracts with ComEd were not affected by the amendment. On
August 4, 1999, the Illinois Appellate Court held that the developers' claims
against the State were premature, and the Illinois Supreme Court denied leave
to appeal that ruling by Order dated December 1, 1999. On April 14, 2000, the
developer of one such facility requested leave to amend its complaint to
allege claims for damages against ComEd based on breach be ComEd of an alleged
contractual obligation to pay for electricity purchased from that developer at
the state-subsidized rate. ComEd has objected to the developer's request for
leave to amend, and intends vigorously to contest any assertion by such
developer that it is entitled to any payment in excess of ComEd's avoided
costs.

  ComEd is involved in administrative and legal proceedings concerning air
quality, water quality and other matters. The outcome of these proceedings may
require increases in future construction expenditures and operating expenses
and changes in operating procedures. ComEd and its subsidiaries are or are
likely to become parties to proceedings initiated by the U.S. EPA, state
agencies and/or other responsible parties under CERCLA with respect to a
number of sites, including MGP sites, or may voluntarily undertake to
investigate and remediate sites for which they may be liable under CERCLA.

  ComEd generally did not operate MGPs as a corporate entity but did, however,
acquire MGP sites as part of the absorption of smaller utilities.
Approximately half of these sites were transferred to then Northern Illinois
Gas Company (Nicor Gas) as part of a general conveyance in 1954. ComEd also
acquired former MGP sites as vacant real estate on which ComEd facilities have
been constructed. To date, ComEd has identified 44 former MGP sites for which
it may be liable for remediation. In the fourth quarter of 1999, ComEd re-
evaluated its environmental remediation strategies. As a result of this re-
evaluation, ComEd's estimate of its cost of former MGP site investigation and
remediation was increased by $68 million in the fourth quarter of 1999.
ComEd's current best estimate of its costs of former MGP site investigation
and remediation is $89 million (2000) dollars (reflecting an estimated
inflation rate of 3.0% and a discount rate of 6.5%). Such estimate, reflecting
an estimated inflation rate of 3% and before the effects of discounting, is
$176 million and is included in other liabilities on the Consolidated Balance
Sheets as of September 30, 2000. It is expected that the costs associated with
investigation and remediation of former MGP sites will be substantially
incurred through 2012, however monitoring and certain other costs are expected
to be incurred through 2042. The increase in ComEd's estimated costs of former
MGP sites of $68 million in the fourth quarter of 1999 was included in O & M
expenses on Unicom and ComEd's Statements of Consolidated Operations. In
addition, as of September 30, 2000 and December 31, 1999, a reserve of $7
million and $8 million, respectively, has been included in other noncurrent
liabilities on the Consolidated Balance Sheets, representing ComEd's estimate
of the liability associated with cleanup costs of sites other than former MGP
sites. These cost estimates are based on currently available information
regarding the responsible parties likely to share in the costs of responding
to site contamination, the extent of contamination at sites for which the
investigation has not yet been completed and the cleanup levels to which sites
are expected


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                   NOTES TO FINANCIAL STATEMENTS--Continued
to have to be remediated. While ComEd may have rights of reimbursement under
insurance policies, amounts that may be recoverable from other entities are
not considered in establishing the estimated liability for the environmental
remediation costs.

  The IDR has issued Notices of Tax Liability to ComEd alleging deficiencies
in Illinois invested capital tax payments for the years 1988 through 1997. The
alleged deficiencies, including interest and penalties, totaled approximately
$54 million as of September 30, 2000. ComEd has protested the notices, and the
matter is currently pending before the IDR's Office of Administrative
Hearings. Interest will continue to accumulate on the alleged tax
deficiencies.

  (22) Segment Reporting. Unicom's reportable operating segments as determined
under SFAS No. 131, Disclosures about Segments of an Enterprise and Related
Information include its regulated electric utility and its unregulated
business operations. Unicom's reportable segments are managed separately
because of their different regulatory and operating environments. Unicom
evaluates their performance based on net income.

  ComEd is an electric utility which is engaged in the generation, purchase,
transmission, distribution and sale of electric energy in Northern Illinois.
ComEd's rates and services are subject to federal and state regulations.

  Unicom's unregulated business operations, including energy services and
development of new business ventures, are not subject to utility regulation by
federal or state agencies. As a result of the December 1999 fossil plant sale,
as described in Note 4, the assets of unregulated businesses exceeded 10% of
Unicom's total assets and, as such, constitute a reportable segment. The
assets of the unregulated businesses include approximately $1.6 billion of
investments in leases at September 30, 2000 as discussed in Note 1.


<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                    NOTES TO FINANCIAL STATEMENTS--Concluded

  The accounting policies of the segments are the same as those described in
Note 1. Unicom's financial data for business segments are as follows:
<TABLE>
<CAPTION>
                          Three Months Ended       Nine Months Ended      Twelve Months Ended
                             September 30            September 30            September 30
                         ----------------------  ----------------------  ----------------------
                            2000        1999        2000        1999        2000        1999
                         ----------  ----------  ----------  ----------  ----------  ----------
                                              (Thousands of Dollars)
<S>                      <C>         <C>         <C>         <C>         <C>         <C>
Operating Revenue:
 Electric Utility....... $2,039,961  $2,060,217  $5,274,100  $5,266,647  $6,764,910  $6,824,708
 Unregulated Businesses.    180,328      24,237     411,571      41,325     460,736      46,932
 Intersegment Revenue...     46,873       8,998      82,012      14,675      88,864      21,509
 Elimination............    (46,873)     (8,998)    (82,012)    (14,675)    (88,864)    (21,509)
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $2,220,289  $2,084,454  $5,685,671  $5,307,972  $7,255,646  $6,871,640
                         ==========  ==========  ==========  ==========  ==========  ==========
Depreciation,
 Amortization and
 Decommissioning:
 Electric Utility....... $  225,951  $  200,284  $  821,662  $  695,387  $  962,420  $  923,216
 Unregulated Businesses.      4,263       1,825      10,197       5,001      12,299       6,515
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $  230,214  $  202,109  $  831,859  $  700,388  $  974,719  $  929,731
                         ==========  ==========  ==========  ==========  ==========  ==========
Interest and Dividend
 Income:
 Electric Utility....... $   54,632  $   10,241  $  176,859  $   41,110  $  195,980  $   48,924
 Unregulated Businesses.     35,055       1,000     114,325       2,827     121,019       3,716
 Elimination............    (74,298)     (1,298)   (189,052)     (1,891)   (197,966)     (2,179)
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $   15,389  $    9,943  $  102,132  $   42,046  $  119,033  $   50,461
                         ==========  ==========  ==========  ==========  ==========  ==========
Interest Expense--Net:
 Electric Utility....... $  124,661  $  135,945  $  381,156  $  413,824  $  512,684  $  524,109
 Unregulated Businesses.     91,012       5,257     219,663      14,202     234,478      17,973
 Elimination............    (74,298)     (1,298)   (189,052)     (1,891)   (197,966)     (2,179)
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $  141,375  $  139,904  $  411,767  $  426,135  $  549,196  $  539,903
                         ==========  ==========  ==========  ==========  ==========  ==========
Income Tax
 Expense/(Benefit):
 Electric Utility....... $   91,726  $  184,992  $  237,658  $  322,868  $  267,012  $  400,325
 Unregulated Businesses.    (22,759)     (5,418)    213,313      85,587     256,875     152,340
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $   68,967  $  179,574  $  450,971  $  408,455  $  523,887  $  552,665
                         ==========  ==========  ==========  ==========  ==========  ==========
Net Income/(Loss):
 Electric Utility....... $  196,246  $  287,049  $  579,965  $  511,435  $  691,259  $  643,283
 Unregulated Businesses.    (32,582)     (7,297)    (77,823)    (42,648)    (88,238)    (63,308)
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $  163,664  $  279,752  $  502,142  $  468,787  $  603,021  $  579,975
                         ==========  ==========  ==========  ==========  ==========  ==========
Capital Expenditures:
 Electric Utility....... $  324,746  $  262,946  $  899,072  $  736,654  $1,245,816  $1,021,602
 Unregulated Businesses.     (5,048)      8,975      15,353      15,960      39,486      21,133
                         ----------  ----------  ----------  ----------  ----------  ----------
Consolidated Unicom..... $  319,698  $  271,921  $  914,425  $  752,614  $1,285,302  $1,042,735
                         ==========  ==========  ==========  ==========  ==========  ==========
</TABLE>

<TABLE>
<CAPTION>
                                                     September 30, December 31,
                                                         2000          1999
                                                     ------------- ------------
<S>                                                  <C>           <C>
Total Assets:
 Electric Utility...................................  $21,877,441  $23,160,265
 Unregulated Businesses.............................    8,310,774    3,720,376
 Elimination........................................   (7,605,580)  (3,474,608)
                                                      -----------  -----------
Consolidated Unicom.................................  $22,582,635  $23,406,033
                                                      ===========  ===========
</TABLE>


<PAGE>



                               UNICOM CORPORATION

                              FINANCIAL STATEMENTS

                For the Three Years Ended Ended December 31, 1999


<PAGE>


                  REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Shareholders of Unicom Corporation:

  We have audited the accompanying consolidated balance sheets and statements of
consolidated  capitalization of UNICOM CORPORATION (an Illinois corporation) and
subsidiary  companies  as of  December  31,  1999  and  1998,  and  the  related
statements   of   consolidated    operations,    retained    earnings/(deficit),
comprehensive  income and cash  flows for each of the three  years in the period
ended December 31, 1999. These financial statements and the schedule referred to
below are the responsibility of the Company's management.  Our responsibility is
to express an opinion on these  financial  statements  and schedule based on our
audits.

  We  conducted  our audits in  accordance  with  auditing  standards  generally
accepted in the United States.  Those standards require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes  assessing the accounting  principles  used and  significant
estimates  made by  management,  as well as  evaluating  the  overall  financial
statement  presentation.  We believe that our audits provide a reasonable  basis
for our opinion.

  In our  opinion,  the  consolidated  financial  statements  referred  to above
present  fairly,  in all material  respects,  the  financial  position of Unicom
Corporation  and subsidiary  companies as of December 31, 1999 and 1998, and the
results of their  operations and their cash flows for each of the three years in
the period ended  December 31, 1999 in  conformity  with  accounting  principles
generally accepted in the United States.

  Our  audits  were made for the  purpose  of  forming  an  opinion on the basic
financial  statements taken as a whole. The schedule listed under Item 14.(a) is
presented  for the  purposes  of  complying  with the  Securities  and  Exchange
Commission's  rules  and is not part of the  basic  financial  statements.  This
schedule has been subjected to the auditing  procedures applied in the audits of
the  basic  financial  statements  and,  in our  opinion,  fairly  states in all
material  respects  the  financial  data  required  to be set forth  therein  in
relation to the basic financial statements taken as a whole.



                                            Arthur Andersen LLP

Chicago, Illinois
January 31, 2000
(except with respect to
Notes 1 and 3 as to which
the date is May 12, 2000)





<PAGE>
                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                 Financial Statements for the three years ended
             December 31, 1999 STATEMENTS OF CONSOLIDATED OPERATIONS

  The following  Statements of Consolidated  Operations for the years 1999, 1998
and 1997  reflect the  results of past  operations  and are not  intended as any
representation  as to  results  of  operations  for any  future  period.  Future
operations  will  necessarily  be affected  by various  and diverse  factors and
developments,  including  changes in electric  prices,  regulation,  population,
business  activity,  asset  dispositions,   competition,   taxes,  environmental
control, energy use, fuel, cost of labor, purchased power and other matters, the
nature and effect of which cannot now be determined.

                                               1999        1998        1997
                                            ----------  ----------  -----------

Operating Revenues........................  $6,847,947  $7,103,410  $ 7,083,022
                                            ----------  ----------  -----------
Operating Expenses and Taxes:
  Fuel....................................  $  997,262  $1,057,527  $ 1,204,218
  Purchased power.........................     551,575     748,017      400,055
  Operation and maintenance...............   2,427,599   2,285,034    2,438,944
  Depreciation and amortization...........     843,248     943,288    1,005,089
  Taxes (except income)...................     508,453     699,834      800,886
  Income taxes............................     359,198     355,023      317,558
  Investment tax credits deferred--net ...     (25,828)    (27,730)     (31,015)
                                            ----------  ----------  -----------
                                            $5,661,507  $6,060,993  $ 6,135,735
                                            ----------  ----------  -----------
Operating Income..........................  $1,186,440  $1,042,417  $   947,287
                                            ----------  ----------  -----------
Other Income and (Deductions):
  Interest on long-term debt, net of
   interest capitalized...................  $ (544,962) $ (444,322) $  (488,033)
  Interest on notes payable...............     (18,602)    (19,560)      (9,134)
  Allowance for funds used during
   construction...........................      21,812      16,464       42,325
  Income taxes applicable to nonoperating
   activities.............................      27,083       4,974       11,010
  Provisions for dividends and redemption
   premiums--
   Preferred and preference stocks of
    ComEd.................................     (23,756)    (56,884)     (60,486)
   ComEd-obligated mandatorily redeemable
    preferred securities of subsidiary
    trusts holding solely ComEd's
    subordinated debt securities..........     (29,710)    (29,710)     (28,860)
  Loss on nuclear plant closure...........         --          --      (885,611)
  Income tax effects of nuclear plant
   closure................................         --          --       362,952
  Miscellaneous--net......................     (21,060)     (3,195)    (130,665)
                                            ----------  ----------  -----------
                                            $ (589,195) $ (532,233) $(1,186,502)
                                            ==========  ==========  ===========
Net Income/(Loss) before Extraordinary
 Items and Cumulative Effect of Change in
 Accounting Principle.....................  $  597,245  $  510,184  $  (239,215)
Extraordinary Losses, less Applicable
 Income Taxes.............................     (27,579)        --      (810,335)
Cumulative Effect of Change in Accounting
 Principle................................         --          --       196,700
                                            ----------  ----------  -----------
Net Income/(Loss).........................  $  569,666  $  510,184  $  (852,850)
                                            ----------  ----------  -----------
<PAGE>


Earnings/(loss) per common share before
 extraordinary items and cumulative effect
 of change in accounting principle--
  Basic...................................  $     2.75  $     2.35  $     (1.10)
  Diluted.................................  $     2.74  $     2.34  $     (1.10)
Extraordinary losses, less applicable
 income taxes (basic and diluted).........  $    (0.13) $      --   $     (3.75)
Cumulative effect of change in accounting
 principle (basic and diluted)............  $      --   $      --   $      0.91
Earnings/(loss) per common share--
  Basic...................................  $     2.62  $     2.35  $     (3.94)
  Diluted.................................  $     2.61  $     2.34  $     (3.94)
Cash Dividends Declared per Common Share..  $     1.60  $     1.60  $      1.60




              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.



<PAGE>
                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                           CONSOLIDATED BALANCE SHEETS

                                                            December 31
                                                      ------------------------
                       ASSETS                            1999         1998
                       ------                         -----------  -----------
                                                        (Thousands of Dollars)

Utility Plant:
  Plant and equipment, at original cost (includes
   construction work in progress of $672 million and
   $858 million, respectively)....................... $25,007,637  $27,801,246
  Less--Accumulated provision for depreciation.......  13,729,223   15,234,320
                                                      -----------  -----------
                                                      $11,278,414  $12,566,926
  Nuclear fuel, at amortized cost....................     843,724      874,979
                                                      -----------  -----------
                                                      $12,122,138  $13,441,905
                                                      -----------  -----------
Investments and Other Property:
  Nuclear decommissioning funds...................... $ 2,546,540  $ 2,267,317
  Subsidiary companies...............................      50,417       41,150
  Other, at cost.....................................     470,848      275,794
                                                      -----------  -----------
                                                      $ 3,067,805  $ 2,584,261
                                                      -----------  -----------
Current Assets:
  Cash and temporary cash investments................ $ 1,696,336  $    55,828
  Cash held for redemption of securities.............     285,056    3,062,816
  Other cash investments.............................          62          --
  Special deposits...................................   1,845,730          271
  Receivables--
    Customers........................................   1,224,678    1,369,701
    Forward share repurchase contract................     813,046          --
    Other............................................     181,532      136,701
    Provisions for uncollectible accounts............     (50,814)     (48,645)
  Coal and fuel oil, at average cost.................      15,613      135,415
  Materials and supplies, at average cost............     221,157      232,246
  Deferred income taxes related to current assets and
   liabilities.......................................      60,056       24,339
  Prepayments and other..............................      36,268       20,301
                                                      -----------  -----------
                                                      $ 6,328,720  $ 4,988,973
                                                      -----------  -----------
Deferred Charges and Other Noncurrent Assets:
  Regulatory assets.................................. $ 1,792,907  $ 4,578,427
  Other..............................................      94,463       96,907
                                                      -----------  -----------
                                                      $ 1,887,370  $ 4,675,334
                                                      -----------  -----------
                                                      $23,406,033  $25,690,473
                                                      ===========  ===========

              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.
<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                           CONSOLIDATED BALANCE SHEETS

                                                              December 31
                                                        -----------------------
            CAPITALIZATION AND LIABILITIES                 1999        1998
            ------------------------------              ----------- -----------
                                                        (Thousands of Dollars)

Capitalization (see accompanying statements):
  Common stock equity.................................. $ 5,332,611 $ 5,099,444
  Preferred and preference stocks of ComEd--
    Without mandatory redemption requirements..........       1,790      74,488
    Subject to mandatory redemption requirements.......         --       69,475
  ComEd-obligated mandatorily redeemable preferred se-
   curities of subsidiary trusts holding solely ComEd's
   subordinated debt securities*.......................     350,000     350,000
  Long-term debt.......................................   7,129,906   7,792,502
                                                        ----------- -----------
                                                        $12,814,307 $13,385,909
                                                        ----------- -----------
Current Liabilities:
  Notes payable........................................ $     4,750 $   292,963
  Current portion of long-term debt, redeemable prefer-
   ence stock and capitalized lease obligations of sub-
   sidiary companies...................................     915,439   2,314,443
  Accounts payable.....................................     582,920     604,936
  Accrued interest.....................................     146,718     180,674
  Accrued taxes........................................   1,386,930     134,976
  Dividends payable....................................      94,090     105,133
  Customer deposits....................................      68,128      56,954
  Accrued plant closing costs..........................         --       78,430
  Other................................................     316,542     155,262
                                                        ----------- -----------
                                                        $ 3,515,517 $ 3,923,771
                                                        ----------- -----------
Deferred Credits and Other Noncurrent Liabilities:
  Deferred income taxes................................ $ 2,484,883 $ 3,805,460
  Nuclear decommissioning liability for retired plants.   1,259,700   1,215,400
  Accumulated deferred investment tax credits..........     484,717     562,285
  Accrued spent nuclear fuel disposal fee and related
   interest............................................     763,427     728,413
  Obligations under capital leases of subsidiary compa-
   nies................................................     161,611     333,653
  Regulatory liabilities...............................     596,157     595,005
  Other................................................   1,325,714   1,140,577
                                                        ----------- -----------
                                                        $ 7,076,209 $ 8,380,793
                                                        ----------- -----------
Commitments and Contingent Liabilities (Note 22)
                                                        $23,406,033 $25,690,473
                                                        =========== ===========

  *As described in Note 11 of Notes to Financial  Statements,  the sole asset of
ComEd  Financing I, a subsidiary  trust of ComEd,  is $206.2  million  principal
amount of ComEd's 8.48% subordinated deferrable interest notes due September 30,
2035. The sole asset of ComEd Financing II, also a subsidiary trust of ComEd, is
$154.6  million  principal  amount  of  ComEd's  8.50%  subordinated  deferrable
interest debentures due January 15, 2027.

              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.

<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    STATEMENTS OF CONSOLIDATED CAPITALIZATION

                                                             December 31
                                                       ------------------------
                                                          1999         1998
                                                       -----------  -----------
                                                         (Thousands of Dollars)
Common Stock Equity:
  Common stock, without par value--
    Outstanding--217,835,570 shares and 217,094,560
    shares, respectively.............................. $ 4,971,618  $ 4,966,630
  Preference stock expense of ComEd...................         (72)      (3,199)
  Retained earnings...................................     363,621      142,813
  Accumulated other comprehensive income..............       7,539          --
  Treasury stock--264,406 shares and 178,982 shares,
   respectively.......................................     (10,095)      (6,800)
                                                       -----------  -----------
                                                       $ 5,332,611  $ 5,099,444
                                                       -----------  -----------
Preferred and Preference Stocks of ComEd--
  Without Mandatory Redemption Requirements:
    Preference stock, cumulative, without par value--
     Outstanding--No shares and 13,499,549 shares,
      respectively.................................... $       --   $   504,957
    Current redemption requirements for preference
     stock included in current liabilities............         --      (432,320)
    $1.425 convertible preferred stock, cumulative,
     without par value--Outstanding--56,291 shares and
     58,211 shares, respectively......................       1,790        1,851
    Prior preferred stock, cumulative, $100 par value
     per share--No shares outstanding.................         --           --
                                                       -----------  -----------
                                                       $     1,790  $    74,488
                                                       -----------  -----------
  Subject to Mandatory Redemption Requirements:
    Preference stock, cumulative, without par value--
     Outstanding--700,000 shares and 1,720,345 shares,
      respectively.................................... $    69,475  $   171,348
    Current redemption requirements for preference
     stock included in current liabilities............     (69,475)    (101,873)
                                                       -----------  -----------
                                                       $       --   $    69,475
                                                       -----------  -----------
ComEd-Obligated Mandatorily Redeemable Preferred
 Securities of Subsidiary Trusts Holding Solely
 ComEd's Subordinated Debt Securities................. $   350,000  $   350,000
                                                       -----------  -----------

<PAGE>

Long-Term Debt:
  First mortgage bonds:
    Maturing 2000 through 2004--6 3/8% to 9 3/8%...... $   698,245  $ 1,080,000
    Maturing 2005 through 2014--4.40% to 8 3/8%.......   1,299,400    1,485,400
    Maturing 2015 through 2023--5.85% to 9 7/8%.......   1,589,443    1,981,000
                                                       -----------  -----------
                                                       $ 3,587,088  $ 4,546,400
  Transitional trust notes, due 2000 through 2008--
   5.29% to 5.74%.....................................   3,070,000    3,400,000
  Sinking fund debentures, due 2001 through 2011--2
   3/4% to 7 5/8%.....................................      30,866       94,159
  Pollution control obligations, due 2007 through
   2014--5.3% to 5 7/8%...............................     139,200      140,700
  Other long-term debt................................   1,089,347    1,259,204
  Current maturities of long-term debt included in
   current liabilities................................    (737,615)  (1,585,281)
  Unamortized net debt discount and premium...........     (48,980)     (62,680)
                                                       -----------  -----------
                                                       $ 7,129,906  $ 7,792,502
                                                       -----------  -----------
                                                       $12,814,307  $13,385,909
                                                       -----------  -----------



              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.

<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
              STATEMENTS OF CONSOLIDATED RETAINED EARNINGS/(DEFICIT)


                                                  1999      1998       1997
                                                --------  --------  ----------
                                                     (Thousands of Dollars)

Balance at Beginning of Period................. $142,813  $(21,184) $1,177,997
Add--Net income/(loss).........................  569,666   510,184    (852,850)
                                                --------  --------  ----------
                                                $712,479  $489,000  $  325,147
                                                --------  --------  ----------
Deduct--
   Cash dividends declared on
     common stock.............................. $347,783  $347,161  $  346,225
   Other capital stock transactions--net.......    1,075      (974)        106
                                                --------  --------  ----------
                                                $348,858  $346,187  $  346,331
                                                --------  --------  ----------
Balance at End of Period  (Includes $716
  million, $494 million and $331 million
  of appropriated retained earnings at December
  31, 1999, 1998 and 1997, respectively)....... $363,621  $142,813  $  (21,184)
                                                ========  ========  ==========


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                 STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME


                                                  1999      1998       1997
                                                --------  --------  ----------
                             (Thousands of Dollars)

Net Income/(Loss) on Common Stock.............. $569,666  $510,184  $ (852,850)
Other Comprehensive Income
  Unrealized gains on securities............... $ 12,471  $    --   $      --
  Income taxes on other comprehensive income...   (4,932)      --          --
                                                --------  --------  ----------
  Other comprehensive income, net of tax....... $  7,539  $    --   $      --
                                                --------  --------  ----------
Comprehensive Income/(Loss).................... $577,205  $510,184  $ (852,850)
                                                ========  ========  ==========





              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                      STATEMENTS OF CONSOLIDATED CASH FLOWS


                                             1999         1998         1997
                                          -----------  -----------  -----------
                                                 (Thousands of Dollars)

Cash Flow from Operating Activities:
 Net income/(loss)......................  $   569,666  $   510,184  $  (852,850)
 Adjustments to reconcile net
  income/(loss) to net cash provided by
  operating activities:
   Depreciation and amortization........      908,894      994,861    1,051,543
   Deferred income taxes and investment
    tax credits--net....................   (1,448,363)      69,768     (345,042)
   Contribution to environmental trust..     (250,000)         --           --
   Recovery of coal reserve regulatory
    assets..............................      197,974      108,372       82,441
   Increase in MGP liability............       68,078          --           --
   Extraordinary loss related to write-
    off of certain net regulatory
    assets..............................          --           --       810,335
   Cumulative effective of change in
    accounting principle................          --           --      (196,700)
   Loss on nuclear plant closure........          --           --       885,611
   Write-down of uranium-related
    properties..........................          --           --        64,387
   Provisions/(payments) for revenue
    refunds--net........................      (22,603)     (23,622)      45,470
   Equity component of allowance for
    funds used during construction......       (7,789)      (6,959)     (23,770)
   Provisions/(payments) for liability
    for separation costs--net...........      (62,396)       9,757       15,986
   Net effect on cash flows of changes
    in:
     Receivables........................      103,515     (486,838)      24,083
     Coal and fuel oil..................          618      (14,751)      19,698
     Materials and supplies.............       (5,202)      19,805       41,659
     Accounts payable excluding nuclear
      fuel lease principal payments and
      separation costs--net.............      (19,251)      97,094      259,810
     Accrued interest and taxes.........    1,246,007      (27,201)     (17,903)
     Other changes in certain current
      assets and liabilities............      124,154      144,290       39,005
   Other--net...........................      (43,257)      27,525      109,927
                                          -----------  -----------  -----------
                                          $ 1,360,045  $ 1,422,285  $ 2,013,690
                                          -----------  -----------  -----------
Cash Flow from Investing Activities:
 Construction expenditures..............  $(1,204,064) $  (966,494) $(1,043,311)
 Nuclear fuel expenditures..............     (253,483)    (166,168)    (185,373)
 Sales of generating plants.............    4,885,720      177,454       60,791
 Equity component of allowance for
  funds used during construction........        7,789        6,959       23,770
 Contributions to nuclear
  decommissioning funds.................      (89,945)    (136,771)    (114,825)
 Other investments and special
  deposits..............................   (1,886,323)     (10,965)     (13,246)
 Plant removals--net....................      (74,584)     (86,988)     (85,923)
                                          -----------  -----------  -----------
                                          $ 1,385,110  $(1,182,973) $(1,358,117)
                                          -----------  -----------  -----------

<PAGE>

Cash Flow from Financing Activities:
 Issuance of securities--
  Transitional trust notes..............  $       --   $ 3,382,629  $       --
  Other long-term debt..................      201,764      382,270      362,663
  Company-obligated  mandatorily
   redeemable  preferred securities if
   subsidiary trust holding solely the
   Company's subordinated debt
   securities...........................          --           --       150,000
  Capital stock.........................       20,941       16,644       15,778
 Retirement and redemption of
  securities--
  Transitional trust notes..............     (330,000)         --           --
  Other long-term debt..................   (1,431,545)    (615,858)    (746,240)
  Capital stock.........................     (639,342)     (34,066)     (44,111)
 Repurchase of common stock.............     (813,046)      (6,800)         --
 Cash dividends paid on common stock....     (347,564)    (346,954)    (345,936)
 Proceeds from sale/leaseback of
  nuclear fuel..........................          --       101,038      149,955
 Nuclear fuel lease principal payments..     (255,402)    (255,605)    (166,411)
 Increase/(decrease) in short-term
  borrowings............................     (288,213)     134,813       29,400
                                          -----------  -----------  -----------
                                          $(3,882,407) $ 2,758,111  $  (594,902)
                                          -----------  -----------  -----------
Change in Net Cash Balance..............  $(1,137,252) $ 2,997,423  $    60,671
Cash, Temporary Cash Investments and
 Cash Held for Redemption of Securities:
   Balance at Beginning of Period.......    3,118,644      121,221       60,550
                                          -----------  -----------  -----------
   Balance at End of Period.............  $ 1,981,392  $ 3,118,644  $   121,221
                                          ===========  ===========  ===========



              The accompanying Notes to Financial Statements are an
                     integral part of the above statements.

<PAGE>



                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                   NOTES TO FINANCIAL STATEMENTS--Continued

(1) Summary of Significant Accounting Policies.

  Corporate  Structure and Basis of  Presentation.  Unicom is the parent holding
company of ComEd and Unicom Enterprises. ComEd, a regulated electric utility, is
the  principal  subsidiary  of  Unicom.  Unicom  Enterprises  is an  unregulated
subsidiary of Unicom and is engaged, through its subsidiaries, in energy service
activities.

  The consolidated  financial statements include the accounts of Unicom,  ComEd,
Indiana Company,  Edison Development,  the Trusts, ComEd Funding,  ComEd Funding
Trust  and  Unicom's  unregulated  subsidiaries.  All  significant  intercompany
transactions  have been  eliminated.  Although the accounts of ComEd Funding and
ComEd Funding Trust, which are SPEs, are included in the consolidated  financial
statements,  as required by GAAP,  ComEd  Funding  and ComEd  Funding  Trust are
legally  separated  from  Unicom  and  ComEd.  The  assets  of the  SPEs are not
available to creditors of Unicom or ComEd and the transitional  property held by
the SPEs are not assets of Unicom or ComEd.

  Use of Estimates.  The preparation of financial  statements in conformity with
GAAP requires  management  to make  estimates  and  assumptions  that affect the
reported amounts of assets and liabilities,  and disclosure of contingent assets
and liabilities at the date of the financial statements and the reported amounts
of revenues and expenses  during the  reporting  period.  Actual  results  could
differ from those estimates. Due to the transition to a new customer information
and billing  system,  a larger portion of customer  revenues and net receivables
were based on estimates  for the period July 1998 through  November 1999 than in
previous periods.

  Regulation.  ComEd is subject to regulation as to  accounting  and  ratemaking
policies and practices by the ICC and FERC. ComEd's accounting  policies and the
accompanying  consolidated  financial  statements  conform to GAAP applicable to
rate-regulated  enterprises  for the  non-generation  portion  of its  business,
including the effects of the ratemaking  process in accordance with SFAS No. 71,
Accounting for the Effects of Certain Types of  Regulation.  Such effects on the
non-generation  portion of its business concern mainly the time at which various
items enter into the  determination of operating  results in order to follow the
principle  of matching  costs with the  applicable  revenues  collected  from or
returned to customers through future rates. See Note 3 for information regarding
the  write-off  of  generation-related  regulatory  assets  and  liabilities  in
December 1997.

  ComEd's  investment in  generation-related  net utility plant,  not subject to
cost-based rate regulation,  including construction work in progress and nuclear
fuel,  and  excluding  the  decommissioning  costs  included in the  accumulated
provision for  depreciation was $7.8 billion and $9.2 billion as of December 31,
1999 and 1998,  respectively.  See  "Regulatory  Assets and  Liabilities"  below
regarding the plant impairment recorded by ComEd in the second quarter of 1998.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued


  Regulatory Assets and Liabilities.  Regulatory assets are incurred costs which
have been deferred and are amortized for  ratemaking  and  accounting  purposes.
Regulatory  liabilities  represent  amounts to be settled with customers through
future rates.  Regulatory  assets and liabilities  reflected on the Consolidated
Balance Sheets at December 31, 1999 and 1998 were as follows:

                                                                December 31
                                                           ---------------------
                                                              1999       1998
                                                           ---------- ----------
                                                               (Thousands of
                                                                 Dollars)

Regulatory assets:
 Impaired production plant...............................  $  366,221 $2,955,154
 Deferred income taxes (1)...............................     688,946    680,356
 Nuclear decommissioning costs--Dresden Unit 1...........     202,308    255,031
 Nuclear decommissioning costs--Zion Units 1 and 2.......     496,638    443,130
 Coal reserves...........................................         --     197,975
 Unamortized loss on reacquired debt (2).................      38,794     46,781
                                                           ---------- ----------
                                                           $1,792,907 $4,578,427
                                                           ========== ==========
Regulatory liabilities:
 Deferred income taxes (1)...............................  $  596,157 $  595,005
                                                           ========== ==========

--------
(1) Recorded in compliance with SFAS No. 109, Accounting for Income Taxes, for
    non-generation related temporary differences.
(2) Amortized over the remaining lives of the  non-generation  related long-term
    debt  issued to finance the  reacquisition.  See "Loss on  Reacquired  Debt"
    below for additional information.

  ComEd  performed a SFAS No. 121  impairment  analysis in 1998 which  concluded
that  future  revenues,  excluding  the  collection  of the CTC  expected  to be
recovered from electric  supply  services,  would be  insufficient  to cover the
costs of certain of its generating assets.  Because future regulated cash flows,
which include the CTC, tariff revenues and gains from the disposition of assets,
are expected to provide  recovery of the  impaired  plant  assets,  a regulatory
asset was recorded for the same amount. This regulatory asset is currently being
amortized  as it is  recovered  through  regulated  cash flows over a transition
period that extends  through 2006.  Consistent  with the  provisions of the 1997
Act, the (pre-tax) gain on the sale of $2.587  billion  resulted in a regulatory
liability,  which was used to recover regulatory assets.  Therefore, the gain on
the sale,  excluding $43 million of amortization of investment tax credits,  was
recorded as a regulatory liability in the amount of $2.544 billion and amortized
in the fourth quarter of 1999. The amortization of the regulatory  liability and
additional  regulatory  asset  amortization  of $2.456  billion are reflected in
depreciation  and  amortization  expense on Unicom's  Statements of Consolidated
Operations  and resulted in a net  reduction to  depreciation  and  amortization
expense  of  $88  million.  See  Note  3 for  additional  information  regarding
amortization of regulatory assets with respect to limits on ComEd's earnings due
to statutory sharing provisions. See Note 5 for additional information regarding
the fossil plant sale.

  The  regulatory  assets for  Dresden  Unit 1 and Zion Units 1 and 2  represent
unrecovered  nuclear  decommissioning  costs, which are expected to be recovered
over the periods 2000-2011 and 2000-2013,  respectively, through a separate rate
recovery rider provided for by the 1997 Act. See "Depreciation,  Amortization of
Regulatory  Assets and  Liabilities  and  Decommissioning"  below for additional
information.


<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Depreciation,   Amortization  of  Regulatory   Assets  and  Liabilities,   and
Decommissioning.   Depreciation,   amortization   of   regulatory   assets   and
liabilities,  and  decommissioning  for the  years  1999,  1998 and 1997 were as
follows:

                                                     1999     1998      1997
                                                   -------- -------- ----------
                                                      (Thousands of Dollars)

Depreciation expense.............................. $713,340 $788,057 $  881,196
Amortization of regulatory assets and
 liabilities--net.................................   46,088   65,211     15,272
                                                   -------- -------- ----------
                                                   $759,428 $853,268 $  896,468
Decommissioning expense...........................   83,820   90,020    108,621
                                                   -------- -------- ----------
                                                   $843,248 $943,288 $1,005,089
                                                   ======== ======== ==========

  Provisions for  depreciation,  including nuclear plant, were at average annual
rates of average  depreciable  utility  plant and  equipment for the years 1999,
1998 and 1997 as follows:
                                                               1999  1998  1997
                                                               ----  ----  ----

Average annual depreciation rates............................. 2.66% 3.02% 3.36%

  Depreciation  is provided on a  straight-line  basis by amortizing the cost of
depreciable  plant and equipment over estimated  service lives for each class of
plant.  The  decrease  in the  average  depreciation  rates  for the year  1999,
compared to 1998, relates primarily to a reduction in nuclear depreciation rates
due to the partial  impairment  of  production  plant,  which was  recorded as a
component of accumulated depreciation, partially offset by shortened depreciable
lives for certain  nuclear  stations.  See "Regulatory  Assets and  Liabilities"
above for additional information on the partial impairment of production plant.

  Nuclear plant decommissioning costs generally are accrued over the current NRC
license lives of the related nuclear  generating  units. The accrual is based on
an annual levelized cost of the unrecovered portion of estimated decommissioning
costs,  which are  escalated  for expected  inflation  to the  expected  time of
decommissioning  and  are net of  expected  earnings  on the  trust  funds.  See
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations," subcaption "Results of  Operations--Depreciation,  Amortization and
Decommissioning,"  for a discussion of questions  raised by the staff of the SEC
and a FASB review regarding the electric utility industry's method of accounting
for  decommissioning  costs.  Dismantling is expected to occur  relatively  soon
after  the end of the  current  NRC  license  life of  each  generating  station
currently  operating.  The  accrual for  decommissioning  is based on the prompt
removal method  authorized by NRC  guidelines.  ComEd's ten operating units have
remaining  current NRC license  lives  ranging from 7 to 28 years.  ComEd's Zion
Station and its first nuclear unit, Dresden Unit 1, are retired and are expected
to be dismantled  beginning in the years 2014 and 2011,  respectively,  which is
consistent   with  the   regulatory   treatment  for  recovery  of  the  related
decommissioning costs.

  Based on ComEd's most recent study,  decommissioning costs are estimated to be
$5.7 billion in current-year (2000) dollars,  including a contingency allowance.
This  estimate  includes  $617  million  of  non-radiological  costs,  which are
included in ComEd's  proposed rider for recovery,  as discussed  below.  ComEd's
decommissioning  cost  expenditures at the end of the units' operating lives are
estimated to total approximately $13.8 billion.  These expenditures are expected
to occur primarily  during the period from 2007 through 2034. All such costs are
expected  to be funded  by the  external  decommissioning  trusts,  which  ComEd
established in compliance with Illinois law and into which ComEd has been making
annual contributions. Future decommissioning cost estimates may be significantly
affected by the adoption of or


<PAGE>



                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

changes to NRC regulations, as well as changes in the assumptions used in making
such estimates, including changes in technology,  available alternatives for the
disposal of nuclear waste and inflation.

  Since 1995, ComEd has collected  decommissioning  costs from its ratepayers in
conjunction with a rider to its tariffs.  The rider allows annual adjustments to
decommissioning  cost  collections  outside  the context of a  traditional  rate
proceeding  and  will  continue  under  the  1997  Act.  The  current  estimated
decommissioning  costs include a contingency  allowance,  but, except at Dresden
Unit 1, exclude amounts for alternative spent fuel storage installations,  which
may be necessary  to store spent fuel during the period  beginning at the end of
the NRC  license  lives of the plants to the date when the DOE accepts the spent
fuel for permanent storage.  Contingency allowances used in decommissioning cost
estimates  provide for  currently  unspecifiable  costs that are likely to occur
after  decommissioning  begins  and  generally  range  from  20%  to  25% of the
currently specifiable costs. In February 1998, the ICC authorized a reduction in
the annual  decommissioning  cost accrual from $109 million to $84 million.  The
reduction  primarily  reflected  stronger than expected after-tax returns on the
external  trust funds and lower than  expected  escalation  in  low-level  waste
disposal  costs,  partially  offset by the higher  current-year  cost estimates,
including a contingency allowance.

  Under its most recent annual  rider,  filed with the ICC on February 26, 1999,
ComEd has proposed to increase its estimated annual decommissioning cost accrual
from $84 million to $130 million.  The proposed increase  primarily  reflects an
increase in low-level  waste  disposal  cost  escalation,  the inclusion of $219
million in current-year  (2000) dollars for safety-related  costs of maintaining
Zion Station in a  mothballed  condition  until  dismantlement  begins,  and the
inclusion of non-radiological  costs in the  decommissioning  cost estimates for
recovery under the rider.

  The  proposed  annual   decommissioning  cost  accrual  of  $130  million  was
determined using the following assumptions: the decommissioning cost estimate of
$5.7  billion  in  current-year  (2000)  dollars,   after-tax  earnings  on  the
tax-qualified  and  nontax-qualified  decommissioning  funds of 7.49% and 6.83%,
respectively,  and an escalation rate for future decommissioning costs of 4.84%.
The proposed  annual accrual  provided over the current NRC license lives of the
nuclear plants,  coupled with the expected fund earnings and amounts  previously
recovered in rates, is expected to aggregate to approximately $13.8 billion.

  For the  ten  operating  nuclear  units,  decommissioning  cost  accruals  are
recorded as portions of  depreciation  expense  and  accumulated  provision  for
depreciation on the Statements of Consolidated  Operations and the  Consolidated
Balance Sheets,  respectively,  as such costs are recovered through rates. As of
December 31, 1999, the total  decommissioning  costs included in the accumulated
provision for depreciation were $2,100 million.

  For ComEd's retired nuclear units,  the total estimated  liability for nuclear
decommissioning  in  current-year  (2000)  dollars is recorded  as a  noncurrent
liability.  The unrecovered portion of the liability is recorded as a regulatory
asset. The nuclear  decommissioning  liability for retired plants as of December
31, 1999 was as follows:



<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued


                                                               Zion
                                                    Dresden   Units
                                                     Unit 1  1 and 2    Total
                                                    -------- -------- ----------
                                                       (Thousands of Dollars)

Amounts recovered through rates and investment
 fund earnings....................................  $104,792 $455,962 $  560,754
Unrecovered portion of the liability..............   202,308  496,638    698,946
                                                    -------- -------- ----------
 Nuclear decommissioning liability for retired
  plants..........................................  $307,100 $952,600 $1,259,700
                                                    ======== ======== ==========

  Under  Illinois  law,  decommissioning  cost  collections  are  required to be
deposited into external trusts. Consequently, such collections do not add to the
cash flows  available  for  general  corporate  purposes.  The ICC has  approved
ComEd's  funding  plan,  which  provides  for  annual  contributions  of current
accruals and ratable  contributions of past accruals over the remaining  current
NRC license lives of the nuclear plants.  The fair value of funds accumulated in
the external  trusts at December  31, 1999 was $2,547  million,  which  includes
pre-tax  unrealized  appreciation of $721 million.  The earnings on the external
trusts for  operating  plants  accumulate  in the fund  balance and  accumulated
provision for depreciation.  Nuclear  decommissioning funding as of December 31,
1999 was as follows:

                                                          (Thousands of Dollars)

Amounts recovered through rates and investment fund
 earnings for operating plants (included in the
 accumulated provision for depreciation)................        $2,099,796
Amounts recovered through rates and investment fund
 earnings for retired plants............................           560,754
Less past accruals not yet contributed to the trusts....           114,010
                                                                ----------
 Fair value of external trust funds.....................        $2,546,540
                                                                ==========


  Customer  Receivables  and  Revenues.  ComEd  is  engaged  principally  in the
production,  purchase,  transmission,  distribution and sale of electricity to a
diverse base of  residential,  commercial,  industrial and wholesale  customers.
ComEd's  electric service  territory has an area of approximately  11,300 square
miles and an estimated  population of approximately eight million as of December
31,  1999.  It  includes  the City,  an area of about 225  square  miles with an
estimated  population  of  approximately  three million from which ComEd derived
approximately  30 percent of its ultimate  consumer  revenues in 1999. ComEd had
approximately 3.5 million electric customers at December 31, 1999.  Revenues are
recognized as electric and delivery services are provided to customers.

  As a result of the  implementation  of a new customer  billing and information
system in July 1998,  billing and collection  delays have temporarily  increased
accounts  receivable from  customers.  Receivables  from customers  include $103
million and $331  million as of December  31,  1999 and 1998,  respectively,  in
estimated unbilled revenue for service that has been provided to customers,  but
for which bill  issuance was delayed  beyond the normal date of issuance.  ComEd
has recorded  increased  provisions for uncollectible  accounts to recognize the
estimated  portion of the  receivables  that are not expected to be recoverable.
Such  provisions  increased  O&M expenses by $35 million and $10 million in 1999
and 1998, respectively,  compared to normally expected levels.  Receivables from
customers  as of December  31, 1999 and 1998 also  include $295 million and $266
million, respectively, for estimated unbilled revenues for electric service that
has been provided to customers  subsequent to the normal  billing date and prior
to the end of the reporting period.


<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

See "Use of  Estimates"  above  for  additional  information  regarding  ComEd's
revenues and net receivables.

  See Notes 3 and 19 for additional information.

  Nuclear  Fuel.  The cost of nuclear fuel is amortized to fuel expense based on
the quantity of heat produced using the unit of production method. As authorized
by the ICC,  provisions for spent nuclear fuel disposal costs have been recorded
at a level required to recover the fee payable on the current  nuclear-generated
and sold  electricity  and the  current  interest  accrual on the  one-time  fee
payable to the DOE for nuclear  generation  prior to April 7, 1983. The one-time
fee and interest thereon have been recovered and the current fee and interest on
the one-time fee are presently being recovered  through base rates.  See Note 14
for  additional  information  concerning  the  disposal of spent  nuclear  fuel,
one-time fee and interest  accrual on the one-time fee.  Nuclear fuel  expenses,
including  leased fuel costs and  provisions  for spent  nuclear  fuel  disposal
costs, were $380 million, $325 million and $298 million for the years 1999, 1998
and 1997, respectively.

  Income Taxes.  Deferred income taxes are provided for income and expense items
recognized for financial  accounting  purposes in periods that differ from those
for income tax  purposes.  Income  taxes  deferred in prior years are charged or
credited to income as the book/tax temporary  differences reverse.  Prior years'
deferred  investment  tax  credits  are  amortized  through  credits  to  income
generally over the lives of the related  property.  Income tax credits resulting
from  interest  charges  applicable  to  nonoperating  activities,   principally
construction, are classified as other income.

  AFUDC and Interest  Capitalized.  In  accordance  with the uniform  systems of
accounts  prescribed  by  regulatory   authorities,   ComEd  capitalizes  AFUDC,
compounded  semiannually,  which  represents the estimated cost of funds used to
finance its construction program for the non-generation portion of its business.
The equity component of AFUDC is recorded on an after-tax basis and the borrowed
funds  component  of AFUDC is recorded on a pre-tax  basis.  The average  annual
capitalization  rates were 7.81%,  8.34% and 9.39% for the years 1999,  1998 and
1997,  respectively.  ComEd  discontinued  SFAS  No.  71  regulatory  accounting
practices in December 1997 for the generation portion of its business,  and as a
result began  capitalizing  interest in 1998. ComEd  capitalized $22 million and
$28 million for the years 1999 and 1998, respectively,  in interest costs on its
generation-related  construction  work in progress  and nuclear fuel in process.
AFUDC and interest  capitalized  do not  contribute  to the current cash flow of
Unicom or ComEd.

  Interest.  Total interest costs incurred on debt, leases and other obligations
were $642  million,  $538 million and $598 million for the years 1999,  1998 and
1997, respectively.

  Debt Discount, Premium and Expense. Discount, premium and expense on long-term
debt of ComEd are being amortized over the lives of the respective issues.

  Loss on Reacquired Debt.  Consistent with regulatory  treatment,  the net loss
from ComEd's reacquisition, in connection with the refinancing of first mortgage
bonds,  sinking fund debentures and pollution control obligations prior to their
scheduled  maturity  dates,  is  deferred  and  amortized  over the lives of the
long-term debt issued to finance the  reacquisition for  non-generation  related
financings.  See  "Regulatory  Assets  and  Liabilities"  above  and  Note 3 for
additional information.

  Stock Option  Awards/Employee Stock Purchase Plan. Unicom has elected to adopt
SFAS No. 123, Accounting for Stock-Based  Compensation,  for disclosure purposes
only. Unicom accounts for its stock option awards and ESPP under APB Opinion No.
25,  Accounting  for  Stock  Issued  to  Employees.  See  Note 8 for  additional
information.



<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Average Common Shares  Outstanding.  The number of average  outstanding common
shares used to compute basic and diluted EPS for the years,  1999, 1998 and 1997
were as follows:

                                                          1999    1998    1997
                                                         ------- ------- -------
                                                          (Thousands of Shares)

Average Number of Common Shares Outstanding:
 Average Number of Common Shares--Basic................. 217,303 216,942 216,330
 Potentially Dilutive Common Shares--Treasury Method:
   Stock Options........................................     660     633     136
   Other Convertible Securities.........................      88      85      98
                                                         ------- ------- -------
Average Number of Common Shares--Diluted................ 218,051 217,660 216,564
                                                         ======= ======= =======


  Energy Risk  Management  Contracts.  In the normal  course of business,  ComEd
utilizes  contracts  for the  forward  sale and  purchase  of  energy  to manage
effectively the utilization of its available generating  capability.  ComEd also
utilizes put and call option contracts and energy swap arrangements to limit the
market price risk associated with the forward commodity contracts. As ComEd does
not  currently  utilize  financial  or  commodity  instruments  for  trading  or
speculative  purposes,  any gains or losses on forward  commodity  contracts are
recognized  when  the  underlying  ransactions  affect  earnings.  Revenues  and
expenses  associated with market price risk  management  contracts are amortized
over the terms of such contracts.

  In June  1998,  the  FASB  issued  SFAS No.  133,  Accounting  for  Derivative
Instruments and Hedging Activities,  which establishes  accounting and reporting
standards  requiring  that  every  derivative   instrument,   including  certain
derivative  instruments  embedded  in  other  contracts,   be  recorded  on  the
Consolidated Balance Sheets as either an asset or liability measured at its fair
value.  SFAS No. 133  requires  that changes in the  derivative's  fair value be
recognized currently in earnings,  unless specific hedge accounting criteria are
met. Special  accounting for qualifying  hedges allows a derivative's  gains and
losses to  offset  related  results  on the  hedged  item on the  Statements  of
Consolidated  Operations,  and requires  Unicom and ComEd to formally  document,
designate,  and assess the  effectiveness  of  transactions  that receive  hedge
accounting.

  The  effective  date of SFAS No. 133 has been delayed for one year,  to fiscal
years beginning  after June 15, 2000.  SFAS No. 133 may be implemented  prior to
June 15, 2000, but such implementation cannot be applied retroactively. SFAS No.
133 must be applied to (i) derivative  instruments  and (ii) certain  derivative
instruments  embedded  in  hybrid  contracts  that  were  issued,  acquired,  or
substantively modified after January 1, 1998 or January 1, 1999 at the Company's
election.

  Unicom and ComEd are in the process of reviewing  their  various  contracts to
determine which  contracts meet the  requirements of SFAS No. 133 and would need
to be reflected as  derivatives  under the  standard and  accounted  for at fair
value.   Among  the  contracts  that  are  being  reviewed  are  purchase  power
agreements,  contracts  related to  electricity  purchases and sales,  contracts
related to gas purchases and sales,  normal purchase orders,  securities  issued
and insurance contracts. Unicom and ComEd have not yet quantified the effects on
their financial  statements of adopting SFAS No. 133. However,  adoption of SFAS
No. 133 could increase volatility in earnings and other comprehensive income.

  Reclassifications.  Certain  prior  year  amounts  have been  reclassified  to
conform with current period presentation.  These reclassifications had no effect
on operating results.

  Cash Held for Redemption of Securities. As of December 31, 1999, the cash held
for  redemption  of  securities  reported  on the  Consolidated  Balance  Sheets
includes $222


<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

million in unused cash  proceeds  from the  issuance of the  transitional  trust
notes and $63 million of escrowed cash and pending  instrument  funding  charges
collected  from ComEd  customers  to be applied to the  principal  and  interest
payment on the transitional trust notes. See Note 3 for additional information.

  Special  Deposits.  As of December 31, 1999,  special  deposits  included $1.8
billion  for  cash  deposited  by  Unicom   Investments  in  connection  with  a
contemplated like-kind exchange transaction involving certain of the sold fossil
plants.

  Statements  of  Consolidated  Cash Flows.  For purposes of the  Statements  of
Consolidated  Cash Flows,  temporary  cash  investments,  generally  investments
maturing  within  three  months  at the  time of  purchase,  and  cash  held for
redemption of securities  are  considered to be cash  equivalents.  Supplemental
cash flow information for the years 1999, 1998 and 1997 was as follows:

                                                      1999     1998     1997
                                                    -------- -------- --------
                                                      (Thousands of Dollars)

Supplemental Cash Flow Information:
 Cash paid during the period for:
   Interest (net of amount capitalized)............ $597,984 $454,091 $512,050
   Income taxes (net of refunds)................... $455,180 $272,476 $264,802
Supplemental Schedule of Non-Cash Investing and
 Financing Activities:
 Capital lease obligations incurred by subsidiary
  companies........................................ $  1,744 $106,370 $158,412


  (2) Merger Agreement. In September 1999, the Boards of Directors of Unicom and
PECO approved a merger of equals that will create a new holding company, Exelon.
The  merger is  conditioned,  among  other  things,  upon the  approvals  of the
shareholders of both companies and by various  regulatory  bodies. The merger is
currently expected to be completed in the latter half of 2000.

  Under the merger agreement,  as amended and restated in January 2000, PECO and
ComEd will become the principal utility subsidiaries of Exelon. This result will
be achieved by a mandatory  exchange of the outstanding common stock of PECO for
common  stock of Exelon,  and a merger of Unicom  with and into  Exelon  wherein
holders of Unicom  common stock will receive 0.875 shares of Exelon common stock
plus $3.00 in cash for each of their shares of Unicom common  stock.  The merger
transaction will be accounted for as a purchase of Unicom by PECO.

  Prior  to the  consummation  of  the  merger,  Unicom  expects  to  repurchase
approximately  $1.0  billion  of its  outstanding  common  shares.  These  share
repurchases  are in addition to 26.3 million  shares of Unicom common stock that
Unicom  repurchased in January 2000 upon settlement of certain forward  purchase
contracts.  The $1.0 billion  additional  share  repurchases will be funded from
available funds, including funds resulting from the fossil plant sale.

  (3) Accounting Effects Related to the 1997 Act. In December 1997, the Governor
of Illinois signed into law the 1997 Act, which  established a phased process to
introduce  competition  into the  electric  industry  in  Illinois  under a less
regulated structure. The 1997 Act was amended in June 1999.

  As a result of the 1997 Act and FERC rules,  prices for the supply of electric
energy are expected to  transition  from  cost-based,  regulated  rates to rates
determined by competitive market forces. Accordingly, the 1997 Act provides for,
among other things,  gradual  customer  access to other electric  suppliers or a
power purchase option which allows the purchase of electric energy from ComEd at
market based prices,  and the  collection of a CTC from  customers who choose to
purchase  electric energy from a RES or elect the power purchase option during a
transition period that extends through 2006.  Effective October 1, 1999, the CTC
was established


<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

in accordance  with a formula defined in the 1997 Act. The CTC, which is applied
on a cents per kilowatthour  basis,  considers the revenue which would have been
collected  from a customer  under  tariffed  rates,  reduced by the  revenue the
utility will receive for providing delivery services to the customer, the market
price for  electricity and a defined  mitigation  factor,  which  represents the
utility's  opportunity to develop new revenue  sources and achieve cost savings.
The CTC allows  ComEd to recover  some of its costs  which  might  otherwise  be
unrecoverable  under market-based  rates.  Nonetheless,  ComEd will need to take
steps to address the portion of such costs which are not recoverable through the
CTC.  Such steps may include cost  control  efforts,  developing  new sources of
revenue and asset dispositions. See Note 5 for additional information.

  On October 1, 1999, more than 41,000 non-residential customers became eligible
to choose a new  electric  supplier  or elect the  purchase  power  option.  The
remainder  of  non-residential  customers  will  become  eligible  to  choose an
electric  supplier or the purchase  power option between June 1 and December 31,
2000.  As  of  December  31,  1999,   over  4,700   non-residential   customers,
representing  approximately  ten  percent of ComEd's  1998  retail  kilowatthour
sales, elected to receive their electric energy from a RES or chose the purchase
power option. The impact of customer choice on results of operations will depend
on various  factors,  including the extent to which  customers  elect to receive
energy  from  a  RES  or  the  purchased  power  option,  the  development  of a
competitive  market and the market  price for energy,  the extent to which ComEd
develops new sources of revenue and the results of cost control efforts. Because
of the inherent  uncertainty  in these  factors,  ComEd is unable to predict the
long term impact of customer  choice on results of  operations.  However,  ComEd
does not expect  customer choice to have a material effect in the near term as a
result of the collection of CTCs as provided by the 1997 Act.

  Utilities are required to continue to offer delivery  services,  including the
transmission and distribution of electric energy, such that customers who select
a RES can receive electric energy from that supplier using existing transmission
and  distribution  facilities.  Such  services will continue to be offered under
cost-based,  regulated rates. The ICC issued orders in August and September 1999
approving, with modifications, ComEd's delivery service tariffs.

  The 1997 Act also provides for a 15%  residential  base rate  reduction  which
became  effective  August 1, 1998 and an  additional  5%  residential  base rate
reduction  in  October  2001.   ComEd's  operating   revenues  were  reduced  by
approximately  $170  million  in  1998  due to the  15%  residential  base  rate
reduction.  The 15% rate reduction further reduced ComEd's operating revenues by
approximately $226 million in 1999, compared to 1998 rate levels.

  Notwithstanding  the rate reductions and subject to certain  earnings tests, a
rate freeze will  generally be in effect until at least January 1, 2005.  During
this period,  utilities may reorganize,  sell or assign assets, retire or remove
plants from service, and accelerate  depreciation or amortization of assets with
limited ICC regulatory  review. A utility may request a rate increase during the
rate  freeze  period  only when  necessary  to ensure  the  utility's  financial
viability,  but not before January 1, 2000. Under the earnings  provision of the
1997 Act, if the earned return on common equity of a utility  during this period
exceeds  an  established  threshold,  one-half  of the excess  earnings  must be
refunded to customers. The threshold rate of return on common equity is based on
the 30-Year  Treasury Bond rate,  plus 5.5% in the years 1998 and 1999, and plus
8.5% in the years 2000  through  2004.  The  utility's  earned  return on common
equity and the threshold  return on common equity for ComEd are each  calculated
on a two-year average basis.  The earnings sharing  provision is applicable only
to ComEd's earnings.  Consistent with the provisions of the 1997 Act,  increased
amortization of regulatory  assets may be recorded,  thereby reducing the earned
return on common equity,  if earnings  otherwise would have exceeded the maximum
allowable  rate of return.  The  potential  for  earnings  sharing or  increased
amortization of regulatory assets could limit earnings in future periods.

  The 1997 Act also allows a portion of ComEd's future revenues to be segregated
and used to support the issuance of securities by ComEd or a SPE.




<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

The proceeds,  net of transaction  costs,  from such security  issuances must be
used to  refinance  outstanding  debt or equity  or for  certain  other  limited
purposes.   The  total  amount  of  such   securities  that  may  be  issued  is
approximately  $6.8 billion.  In December 1998,  ComEd initiated the issuance of
$3.4 billion of  transitional  trust notes  through its SPEs,  ComEd Funding and
ComEd Funding  Trust.  The proceeds from the  transitional  trust notes,  net of
transaction costs, were, as required, used to redeem $1,101 million of long-term
debt and $607  million of  preference  stock in 1999 and reduce by $500  million
ComEd's  outstanding  short-term  debt.  During the year 1999, ComEd recorded an
extraordinary  loss related to the early  redemptions  of such  long-term  debt,
which  reduced  net  income  on  common  stock  by  approximately   $28  million
(after-tax),  or $0.13 per  common  share  (diluted).  ComEd also  recorded  $12
million (after-tax),  or $0.05 per common share (diluted),  for premiums paid in
connection with the redemption of such preference  stock.  The preference  stock
premiums were included in the provision for dividends for  preference  stocks of
ComEd on the Statements of Consolidated  Operations.  As more fully described in
Note 7,  Unicom has  repurchased  approximately  26.3  million  shares of Unicom
common stock using $924 million of proceeds it received from ComEd's  repurchase
of its common stock held by Unicom.  The remaining proceeds from the issuance of
the transitional trust notes will be used for the payment of fees and additional
common  stock  repurchases.  See  Note 7 for  additional  information  regarding
Unicom's share repurchases.

  Because the 1997 Act is expected ultimately to lead to market-based pricing of
electric  generation  services,   ComEd  discontinued  SFAS  No.  71  regulatory
accounting  practices  for the  generation  portion of its  business in December
1997.  ComEd  evaluated the  regulatory  assets and  liabilities  related to the
generation  portion of its business and determined that it was not probable that
such costs would be recovered  through the cash flows from the regulated portion
of its  business.  Accordingly,  the  generation-related  regulatory  assets and
liabilities  were  written off in the fourth  quarter of 1997,  resulting  in an
extraordinary  charge of $810  million  (after-tax),  or $3.75 per common  share
(diluted).  The  fourth  quarter of 1997 also  reflected  charges  totaling  $44
million (after-tax), or $0.20 per common share (diluted), as a result of ComEd's
elimination  of its FAC  pursuant to an option in the 1997 Act,  and a charge of
$60 million (after-tax),  or $0.28 per common share (diluted),  for a write down
of  ComEd's  investment  in  uranium-related  properties  to  realizable  value.
Projections  of the  market  price  for  uranium  indicated  that  the  expected
incremental  costs of mining and milling uranium at the properties  would exceed
the  expected  market  price for uranium  and such costs are not  expected to be
recoverable in a competitive  market.  The market value of such  uranium-related
properties was determined  based on estimated  future cash flows and independent
appraisals.

  The 1997 Act also  requires  utilities  to  establish or join an ISO that will
independently manage and control utility transmission systems. Additionally, the
1997 Act  includes  the leveling of certain  regulatory  requirements  to permit
operational  flexibility,  the leveling of certain regulatory and tax provisions
as applied to various  electric  suppliers and a new, more stringent,  liability
standard applicable to ComEd in the event of a major outage.

  (4)  Cumulative  Effect of a Change in  Accounting  Principle.  In the  fourth
quarter of 1997, ComEd changed its accounting method for revenue  recognition to
record revenues associated with service which has been provided to customers but
has not yet been billed at the end of each  accounting  period,  retroactive  to
January 1, 1997. This change in accounting  method increased  operating  results
for the year 1997 to reflect the  one-time  cumulative  effect of the change for
years prior to 1997 by $197 million (after-tax), or $0.91 per common share.

  (5) Sale of Plants and Closure.  In December 1999, ComEd completed the sale of
its fossil  generating  assets to EME for a cash purchase price of $4.8 billion.
The fossil  generating  assets  represent  an aggregate  generating  capacity of
approximately 9,772 megawatts.


<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Just prior to the  consummation  of the fossil plant sale,  ComEd  transferred
these  assets to an  affiliate,  Unicom  Investment.  In  consideration  for the
transferred  assets,   Unicom  Investment  paid  ComEd  consideration   totaling
approximately  $4.8  billion  in the  form of a  demand  note in the  amount  of
approximately  $2.4  billion  and an  interest-bearing  Note with a maturity  of
twelve years. Unicom Investment immediately sold the fossil plant assets to EME,
in consideration of which Unicom Investment received  approximately $4.8 billion
in cash from EME.  Immediately  after its receipt of the cash  payment from EME,
Unicom Investment paid the $2.4 billion  aggregate  principal due to ComEd under
the demand note.  Unicom  Investment will use the remainder of the cash received
from EME to fund other business opportunities,  including the share repurchases.
Of the cash  received by ComEd,  $1.8  billion is expected to be used to pay the
costs and  taxes  associated  with the  fossil  plant  sale,  including  ComEd's
contribution  of $250  million  of the  proceeds  to an  environmental  trust as
required by the 1997 Act.  The  remainder  of the demand note  proceeds  will be
available to ComEd to fund,  among other things,  transmission  and distribution
projects,  nuclear  generation  station  projects,  and  environmental and other
initiatives.

  The sale  produced an after-tax  gain of  approximately  $1.6  billion,  after
recognizing  commitments  associated with certain coal contracts ($350 million),
recognizing  employee-related  costs  ($112  million)  and  contributing  to the
environmental  trust.  The coal contract costs include the  amortization  of the
remaining  balance of ComEd's  regulatory asset for unrecovered coal reserves of
$178 million and the recognition of $172 million of settlement  payments related
to the above-market  portion of coal purchase  commitments ComEd assigned to EME
at market value upon  completion of the fossil plant sale.  The severance  costs
included  pension and  post-retirement  welfare benefit  curtailment and special
termination  benefit  costs  of  $51  million  and  transition,  separation  and
retention  payments of $61  million.  A total of 1,730 fossil  station  employee
positions were  eliminated  upon completion of the fossil plant sale on December
15, 1999. As of December 31, 1999,  1,590 of the employees  whose positions were
eliminated had been  terminated and 140 affected  employees were in a transition
program which generally  extends 60 days from the date of the fossil plant sale.
Consistent  with the  provisions of the 1997 Act, the (pre-tax) gain on the sale
of $2.587 billion resulted in a regulatory liability,  which was used to recover
regulatory  assets.  Therefore,  the gain on the sale,  excluding $43 million of
amortization of investment tax credits,  was recorded as a regulatory  liability
in the amount of $2.544 billion and amortized in the fourth quarter of 1999. The
amortization  of  the  regulatory  liability  and  additional  regulatory  asset
amortization  of $2.456 billion are reflected in depreciation  and  amortization
expense on Unicom's  Statement of Consolidated  Operations and resulted in a net
reduction to depreciation and amortization  expense of $88 million.  See Note 1,
under "Regulatory Assets and Liabilities," for additional information.

  In January 1998,  the Boards of Directors of Unicom and ComEd  authorized  the
permanent   cessation  of  nuclear  generation   operations  and  retirement  of
facilities  at ComEd's  2,080  megawatt Zion nuclear  generating  station.  Such
retirement  resulted in a charge in the fourth  quarter of 1997 of $523  million
(after-tax),  or $2.42  per  common  share  (diluted).  The  charge  included  a
liability for estimated  future closing costs  associated with the retirement of
the station,  excluding  severance costs,  resulting in a charge of $117 million
(after-tax).  ComEd has recorded reductions to the expected liability for future
closing costs of $16 million  (after-tax),  or $0.07 per common share (diluted),
and $15 million  (after-tax),  or $0.07 per common share (diluted),  in 1999 and
1998,  respectively,  to reflect  employees being reassigned or removed from the
payroll sooner than anticipated, and lower support costs and use of contractors.
See Note 17 for  information  regarding costs of voluntary  employee  separation
plans.

  ComEd completed the sale of its State Line and Kincaid  coal-fired  generating
stations  (representing 1,598 megawatts of generating capacity) in December 1997
and February 1998, respectively. The net proceeds of the sales, after income tax
effects and closing costs, were  approximately  $190 million.  The proceeds were
used to retire or redeem  existing debt in the first quarter of 1998.  ComEd has
entered into 15-year purchased power agreements for the output of the stations.


<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

 (6)  Authorized  Shares,  Voting Rights and Stock Rights of Capital  Stock.  At
December 31, 1999, Unicom's authorized shares consisted of 400,000,000 shares of
common tock. The authorized  shares of ComEd preferred and preference  stocks at
December 31, 1999 were: preference  stock--7,510,451  shares; $1.425 convertible
preferred  stock--56,291 shares; and prior preferred  stock--850,000 shares. The
preference and prior  preferred  stocks are issuable in series and may be issued
with or without mandatory redemption requirements. Holders of outstanding Unicom
shares are entitled to one vote for each share held on each matter  submitted to
a vote of such  shareholders;  and  holders  of  outstanding  ComEd  shares  are
entitled to one vote for each share held on each matter  submitted  to a vote of
such shareholders. All such shares have the right to cumulate votes in elections
for the directors of the corporation which issued the shares.

  Pursuant to a plan  adopted by the Unicom  Board of  Directors  on February 2,
1998,  each share of Unicom's common stock carries the right (referred to herein
as a "Right") to purchase  one-thousandth  of one share of Unicom's common stock
at a  purchase  price of $100  per  whole  share of  common  stock,  subject  to
adjustment.  The plan was  amended on  September  22,  1999 to render the Rights
inapplicable  to the  transactions  contemplated  by the Merger  Agreement.  The
Rights  are  tradable  only  with  Unicom's   common  stock  until  they  become
exercisable.  The  Rights  become  exercisable  upon  the  earlier  of ten  days
following  a public  announcement  that a person  (an  "Acquiring  Person")  has
acquired 15% or more of Unicom's  outstanding  common stock or ten business days
(or such later date as may be  determined  by action of the Board of  Directors)
following the  commencement of a tender or exchange offer which, if consummated,
would result in a person or group becoming an Acquiring  Person.  The Rights are
subject  to  redemption  by  Unicom at a price of $0.01 per  Right,  subject  to
certain  limitations,  and will expire on February 2, 2008. If a person or group
becomes an Acquiring  Person,  each holder of a Right will  thereafter  have the
right to receive, upon exercise,  Unicom common stock at a 50% discount from the
then current  market price.  If Unicom is acquired in a merger or other business
combination  transaction in which Unicom is not the survivor,  or 50% or more of
Unicom's assets or earning power is sold or transferred,  each holder of a Right
shall  then  have the  right to  receive,  upon  exercise,  common  stock of the
acquiring  company at a 50% discount from the then current  market price of such
common stock. Rights held by an Acquiring Person become void upon the occurrence
of such events.

  (7) Common  Equity.  In the  fourth  quarter of 1998,  Unicom  entered  into a
forward  purchase  arrangement  for the repurchase of $200 million of its common
stock.  This  contract,  which was accounted  for as an equity  instrument as of
December 31, 1998, was settled on a net cash basis in February  1999,  resulting
in a $16 million  reduction to common stock equity on the  Consolidated  Balance
Sheets.

  During  1999,  Unicom also entered into  forward  purchase  arrangements  with
financial  institutions for the repurchase of approximately  26.3 million shares
of Unicom common stock. The repurchase arrangements were settled in January 2000
on a physical basis.  Effective  January 2000, the share repurchases will reduce
outstanding shares and reduce common stock equity. Prior to the settlement,  the
repurchase  arrangements  were  recorded  as a  receivable  on the  Consolidated
Balance  Sheets based on the  aggregate  market value of the shares  deliverable
under  the  arrangements.   In  1999,  net  unrealized  losses  of  $44  million
(after-tax),   or  $0.20  per  common  share,   were  recorded  related  to  the
arrangements.  The settlement of the  arrangements in January 2000 resulted in a
gain of $113 million (after-tax).

  At December 31,  1999,  shares of Unicom  common  stock were  reserved for the
following purposes:

      Long-Term Incentive Plan........................................ 2,231,763
      Employee Stock Purchase Plan....................................   323,797
      Shareholder Rights Plan.........................................   400,000
      Exchange for ComEd common stock not held by Unicom..............    87,650
      1996 Directors' Fee Plan........................................   162,459
                                                                       ---------
                                                                       3,205,669
                                                                       =========



<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Common stock issued for the years 1999, 1998 and 1997 was as follows:


                                                     1999      1998      1997
                                                    -------  --------  --------

Shares of Common Stock Issued:
 Long-Term Incentive Plan.........................  451,501   494,302   208,104
 Employee Stock Purchase Plan.....................   89,500    94,270   196,003
 Employee Savings and Investment Plan.............      --        --    274,203
 Exchange for ComEd common stock not held by
  Unicom..........................................   (2,454)   12,757    12,370
 1996 Directors' Fee Plan.........................    5,521    12,733    14,175
 Treasury Stock...................................  (85,424) (178,982)      --
                                                    -------  --------  --------
                                                    458,644   435,080   704,855
                                                    =======  ========  ========

                                                       (Thousands of Dollars)

Changes in Common Stock Accounts:
 Total shares issued..............................  $21,290  $ 16,847  $ 15,768
 Net cash settlement of forward share repurchase
  contract........................................  (16,454)
 Shares held by trustee for Unicom Stock Bonus De-
  ferral Plan.....................................      --      6,775    (2,476)
 Other............................................      151      (203)       10
                                                    -------  --------  --------
                                                    $ 4,987  $ 23,419  $ 13,302
                                                    =======  ========  ========



  As of December 31, 1999 and 1998, 264,406 and 178,982 shares, respectively, of
Unicom common stock were  reacquired and held as treasury stock at a cost of $10
million and $7 million, respectively.

  At December  31,  1999 and 1998,  75,692 and  76,079,  respectively,  of ComEd
common stock  purchase  warrants  were  outstanding.  The  warrants  entitle the
holders to convert such warrants into common stock of ComEd at a conversion rate
of one share of common stock for three warrants.

  As of December 31, 1999 and 1998, $716 million and $494 million, respectively,
of retained earnings had been appropriated for future dividend payments.

  (8)  Stock  Option   Awards/Employee   Stock  Purchase  Plan.   Unicom  has  a
nonqualified stock option awards program under its Long-Term Incentive Plan. The
stock option awards  program was adopted by Unicom in July 1996 to reward valued
employees  responsible  for,  or  contributing  to, the  management,  growth and
profitability of Unicom and its  subsidiaries.  The stock options granted expire
ten years from their grant date.  One-third of the shares subject to the options
vest on each of the first  three  anniversaries  of the option  grant  date.  In
addition,  the stock options will become fully vested  immediately if the holder
dies, retires, is terminated by the Company,  other than for cause, or qualifies
for long-term disability. Options granted before July 22, 1998 also vest in full
upon a change in control,  while options  granted on or after July 22, 1998 vest
in full if the option  holder is  terminated  within 24 months after a change of
control.



<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Stock option  transactions for the years 1999, 1998 and 1997 are summarized as
follows:


                                                     Number of  Weighted Average
                                                      Options    Exercise Price
                                                     ---------  ----------------

Outstanding as of January 1, 1997................... 1,188,000      $25.500
Granted during the year............................. 1,339,350       22.313
Exercised during the year...........................   (23,423)      25.500
Expired/cancelled during the year...................  (212,549)      23.632
                                                     ---------
Outstanding as of December 31, 1997................. 2,291,378       23.810
Granted during the year............................. 1,379,525       35.234
Exercised during the year...........................  (404,082)      24.244
Expired/cancelled during the year...................  (123,928)      25.715
                                                     ---------
Outstanding as of December 31, 1998................. 3,142,893       28.694
Granted during the year............................. 1,848,050       35.750
Exercised during the year...........................  (313,231)      24.102
Expired/cancelled during year.......................  (179,076)      33.551
                                                     ---------
Outstanding as of December 31, 1999................. 4,498,636       31.719
                                                     =========


  Of the stock options  outstanding  at December 31, 1999,  1,676,854 had vested
with a weighted average exercise price of $27.

  The fair value of each stock  option is  estimated  on the date of grant using
the  Black-Scholes  option-pricing  model with the  following  weighted  average
assumptions:


                                                         Stock Option Grant Date
                                                         -----------------------
                                                          1999    1998    1997
                                                         ------- ------- -------

Expected option life.................................... 7 years 7 years 7 years
Dividend yield..........................................   4.50%   4.54%   7.20%
Expected volatility.....................................  23.02%  21.95%  22.29%
Risk-free interest rate.................................   4.83%   5.58%   6.25%


  The  estimated  weighted  average fair value for each stock option  granted in
1999, 1998 and 1997 was $6.48, $6.62 and $2.79, respectively.

  The ESPP allows  employees  to purchase  Unicom  common stock at a ten percent
discount from market value.  Substantially all of the employees of Unicom, ComEd
and their  subsidiaries  are eligible to participate in the ESPP.  Unicom issued
89,500, 94,270 and 196,003 shares of common stock during the year 1999, 1998 and
1997,  respectively,  under the ESPP at a weighted average annual purchase price
of $33.58, $33.11 and $19.15, respectively.

  Unicom  has  adopted  the  disclosure-only  provisions  of SFAS No.  123.  For
financial  reporting  purposes,  Unicom  has  adopted  APB No.  25,  and thus no
compensation  cost has been  recognized  for the stock option awards  program or
ESPP. If Unicom had recorded  compensation expense for the stock options granted
and the shares of common stock issued under the ESPP in accordance with SFAS No.
123 using the fair value based method of accounting,  the  additional  charge to
operations  would have been $4 million  (after-tax),  or $0.02 per common  share
(diluted), $2 million (after-tax),  or $0.01 per common share (diluted),  and $2
million  (after tax), or $0.01 per common share  (diluted),  for the years 1999,
1998 and 1997, respectively.


<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  (9)  ComEd  Preferred  and  Preference  Stocks  Without  Mandatory  Redemption
Requirements. During the year 1999, 13,499,549 shares of preferred or preference
stock without mandatory redemption requirements were redeemed and no shares were
issued.  No shares of ComEd  preferred or preference  stocks  without  mandatory
redemption requirements were issued or redeemed during 1998 and 1997. All series
other than Series $1.425 have been redeemed.

  The  outstanding  shares of ComEd's  $1.425  convertible  preferred  stock are
convertible at the option of the holders thereof, at any time, into common stock
of  ComEd  at the  rate of 1.02  shares  of  common  stock  for  each  share  of
convertible  preferred  stock,  subject to future  adjustment.  The  convertible
preferred  stock may be  redeemed  by ComEd at $42 per share,  plus  accrued and
unpaid  dividends,  if any.  The  involuntary  liquidation  price of the  $1.425
convertible  preferred  stock is $31.80  per  share,  plus  accrued  and  unpaid
dividends, if any.

  (10) ComEd  Preference  Stock  Subject to Mandatory  Redemption  Requirements.
During  1999,  1998 and 1997,  no shares of ComEd  preference  stock  subject to
mandatory  redemption  requirements  were issued.  During  1999,  1998 and 1997,
1,020,345, 338,215 and 438,215 shares,  respectively,  of ComEd preference stock
subject to mandatory  redemption  requirements  were  reacquired to meet sinking
fund  requirements  or were part of the early  redemption  in 1999.  There  were
700,000  shares of Series $6.875  preference  stock  outstanding at December 31,
1999, at an aggregate  stated value of $69 million.  This series is non-callable
and is required to be  redeemed on May 1, 2000.  The sinking  fund price is $100
and the  involuntary  liquidation  price is $99.25 per share,  plus  accrued and
unpaid dividends, if any. The $69 million is included in current liabilities.

  (11) ComEd-Obligated Mandatorily Redeemable Preferred Securities of Subsidiary
Trusts Holding Solely ComEd's  Subordinated Debt Securities.  In September 1995,
ComEd Financing I, a wholly-owned subsidiary trust of ComEd, issued 8,000,000 of
its 8.48% ComEd-obligated  mandatorily redeemable preferred securities. The sole
asset of ComEd Financing I is $206.2 million  principal  amount of ComEd's 8.48%
subordinated  deferrable interest notes due September 30, 2035. In January 1997,
ComEd Financing II, a wholly-owned  subsidiary trust of ComEd, issued 150,000 of
its 8.50% ComEd-obligated  mandatorily  redeemable capital securities.  The sole
asset of ComEd Financing II is $154.6 million  principal amount of ComEd's 8.50%
subordinated  deferrable  interest  debentures due January 15, 2027.  There is a
full and unconditional  guarantee by ComEd of the Trusts'  obligations under the
securities issued by the Trusts.  However,  ComEd's  obligations are subordinate
and junior in right of payment to certain other indebtedness of ComEd. ComEd has
the right to defer payments of interest on the subordinated  deferrable interest
notes by  extending  the  interest  payment  period,  at any time,  for up to 20
consecutive  quarters.  Similarly,  ComEd  has the  right to defer  payments  of
interest on the  subordinated  deferrable  interest  debentures by extending the
interest  payment  period,  at any time, for up to ten  consecutive  semi-annual
periods.  If interest payments on the subordinated  deferrable interest notes or
debentures are so deferred,  distributions on the preferred securities will also
be deferred.  During any  deferral,  distributions  will continue to accrue with
interest thereon. In addition,  during any such deferral,  ComEd may not declare
or pay any dividend or other distribution on, or redeem or purchase,  any of its
capital stock.

  The subordinated  deferrable  interest notes are redeemable by ComEd, in whole
or in part,  from time to time, on or after September 30, 2000, and with respect
to the  subordinated  deferrable  interest  debentures,  on or after January 15,
2007, or at any time in the event of certain  income tax  circumstances.  If the
subordinated  deferrable  interest notes or debentures are redeemed,  the Trusts
must redeem preferred securities having an aggregate liquidation amount equal to
the aggregate principal amount of the subordinated  deferrable interest notes or
debentures  so  redeemed.  In  the  event  of  the  dissolution,  winding  up or
termination  of the Trusts,  the  holders of the  preferred  securities  will be
entitled to receive,  for each preferred  security,  a liquidation amount of $25
for the  securities of ComEd  Financing I and $1,000 for the securities of ComEd
Financing II, plus accrued and unpaid distributions thereon,  including interest
thereon, to the date of payment,


<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

unless in connection with the dissolution,  the subordinated deferrable interest
notes or debentures are distributed to the holders of the preferred securities.

  (12)  Long-Term  Debt.  ComEd  initiated  the  issuance  of  $3.4  billion  of
transitional  trust notes  through  its SPEs,  ComEd  Funding and ComEd  Funding
Trust,  in the fourth  quarter of 1998.  The current  amount  outstanding  is as
follows:


              Series                                         Principal Amount
      ------------------------                            ----------------------
                                                          (Thousands of Dollars)

      5.38% due March 25, 2000...........................       $   94,967
      5.29% due June 25, 2001............................          425,033
      5.34% due March 25, 2002...........................          258,861
      5.39% due June 25, 2003............................          421,139
      5.44% due March 25, 2005...........................          598,511
      5.63% due June 25, 2007............................          761,489
      5.74% due December 25, 2008........................          510,000
                                                                ----------
                                                                $3,070,000
                                                                ==========



  For  accounting  purposes,  the  liabilities  of ComEd  Funding  Trust for the
transitional  trust notes are  reflected as long-term  debt on the  Consolidated
Balance Sheets of Unicom and ComEd.

  The proceeds, net of transaction costs, from the transitional trust notes have
been used, as required,  to redeem debt and equity.  During 1999, ComEd redeemed
or reacquired $1,101 million of long-term debt.

  Sinking fund requirements and scheduled  maturities remaining through 2004 for
ComEd's first mortgage bonds,  transitional trust notes, sinking fund debentures
and other  long-term  debt  outstanding  at December 31, 1999,  after  deducting
deposits made for the retirement of sinking fund  debentures,  are summarized as
follows:  2000--$732 million; 2001--$345 million; 2002--$645 million; 2003--$445
million; and 2004--$577 million.

  At December  31, 1999,  ComEd's  outstanding  first  mortgage  bonds  maturing
through 2004 were as follows:



                Series                                    Principal Amount
   --------------------------------                    ----------------------
                                                       (Thousands of Dollars)

   9 3/8% due February 15, 2000.......................        $ 42,245
   6 1/2% due April 15, 2000..........................         230,000
   6 3/8% due July 15, 2000...........................         100,000
   7 3/8% due September 15, 2002......................         200,000
   6 5/8% due July 15, 2003...........................         100,000
   5 3/10% due January 15, 2004.......................          26,000
                                                              --------
                                                              $698,245
                                                              ========




<PAGE>



                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Other  long-term  debt  outstanding  at  December  31, 1999 is  summarized  as
follows:


                                          Principal
              Debt Security                 Amount         Interest Rate
----------------------------------------  ---------- -------------------------
                                          (Thousands
                                              of
                                           Dollars)

Unicom--
 Loans Payable:
 Loan due January 1, 2003                 $    5,519 Interest rate of 8.31%
 Loan due January 1, 2004                      6,371 Interest rate of 8.44%
 Loan due January 15, 2009                     6,025 Interest rate of 8.30%
 Loan due January 15, 2009                     7,567 Interest rate of 8.55%
 Loan due January 15, 2010                     6,803 Interest rate of 8.88%
 Loan due July 15, 2010                        9,225 Interest rate of 7.98%
                                          ----------
                                          $   41,510
                                          ----------
ComEd--
 Notes:
 Medium Term Notes, Series 3N due vari-
  ous dates through October 15, 2004      $  156,000 Interest rates ranging
                                                      from 9.17% to 9.20%
 Notes due January 15, 2004                  150,000 Interest rate of 7.375%
 Notes due October 15, 2005                  235,000 Interest rate of 6.40%
 Notes due January 15, 2007                  150,000 Interest rate of 7.625%
 Notes due July 15, 2018                     225,000 Interest rate of 6.95%
                                          ----------
                                          $  916,000
                                          ----------
 Purchase Contract Obligation
 due April 30, 2005                       $      301 Interest rate of 3.00%
                                          ----------
Total ComEd                               $  916,301
                                          ----------
Unicom Enterprises--
 Notes:
 Unicom Thermal Guaranteed Senior Note
  due May 30, 2012                        $  120,000 Interest rate of 7.38%
 Northwind Midway Guaranteed Senior Note
  due June 30, 2023                           11,523 Interest rate of 7.68%
 Unicom Mechanical Services Note
  due January 1, 2001                             13 Interest rate of 8.50%
                                          ----------
Total Unicom Enterprises                  $  131,536
                                          ----------
Total Unicom                              $1,089,347
                                          ==========



  Long-term  debt  maturing  within  one  year  has  been  included  in  current
liabilities.

  ComEd's   outstanding   first   mortgage  bonds  are  secured  by  a  lien  on
substantially  all  property  and  franchises,  other  than  expressly  excepted
property, owned by ComEd.

  In July 1998, Unicom Thermal issued a $120 million 7.38% unsecured  guaranteed
senior Note due May 2012, the proceeds of which were used to refinance  existing
debt.  The Note is  guaranteed  by Unicom and includes  certain  covenants  with
respect to Unicom and Unicom Thermal's operations. Such covenants include, among
other things,  (i) a requirement that Unicom and its  consolidated  subsidiaries
maintain a tangible  net worth at least $10 million  greater  than that of ComEd
and its consolidated subsidiaries, (ii) a requirement that Unicom's consolidated
debt to consolidated  capitalization not exceed 0.65 to 1, (iii) restrictions on
the  indebtedness  for borrowed money that Unicom Thermal may incur,  and (iv) a
requirement  that Unicom own,  directly or  indirectly,  51% of the  outstanding
stock of Unicom Thermal and at least 80% of the outstanding stock of ComEd.



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  In June 1999,  Northwind Midway issued $12 million of 7.68% guaranteed  senior
Notes due June 2023,  the  proceeds of which will be used  primarily  to finance
certain  project  construction  costs.  The Notes are  guaranteed  by Unicom and
include  certain  covenants  with  respect  to  Unicom  and  Northwind  Midway's
operations.  Such  covenants  include,  among other things,  a requirement  that
Unicom  and its  consolidated  subsidiaries  own no less than 65% of the  voting
membership interest of Northwind Midway.

  (13)  Lines of  Credit.  ComEd had total  unused  bank lines of credit of $800
million at December 31, 1999. Of that amount,  $500 million  expires on December
15, 2000 and $300 million expires on December 17, 2002. The interest rate is set
at the time of a borrowing  and is based on several  floating  rate bank indices
plus a spread which is dependent  upon the credit rating of ComEd's  outstanding
first  mortgage  bonds or on a prime  interest  rate.  ComEd is obligated to pay
commitment and facility fees with respect to the line of credit.

  Unicom  Enterprises  has an unused $400  million  credit  facility  which will
expire December 15, 2000. The credit facility can be used by Unicom  Enterprises
to finance  investments  in unregulated  businesses  and projects,  including UT
Holdings and Unicom Energy Services,  and for general  corporate  purposes.  The
credit  facility is guaranteed  by Unicom and includes  certain  covenants  with
respect to Unicom and Unicom  Enterprises'  operations.  Such covenants include,
among  other  things,  (i)  a  requirement  that  Unicom  and  its  consolidated
subsidiaries  maintain a tangible  net worth at least $3.5  million over that of
ComEd  and its  consolidated  subsidiaries,  (ii) a  requirement  that  Unicom's
consolidated  debt to  consolidated  capitalization  not exceed 0.65 to 1, (iii)
restrictions  on the  indebtedness  for  borrowed  money that Unicom  (excluding
ComEd) and Unicom  Enterprises may incur, and (iv) a requirement that Unicom own
100% of the  outstanding  stock of  Unicom  Enterprises  and at least 80% of the
outstanding  stock of ComEd;  and  provide  that  Unicom may not  declare or pay
dividends  during the  continuance  of an event of default.  Interest  rates for
borrowings  under the credit facility are set at the time of a borrowing and are
based on either a prime  interest  rate or a  floating  rate bank  index  plus a
spread which varies with the credit rating of ComEd's outstanding first mortgage
bonds.  Unicom  Enterprises is obligated to pay commitment  fees with respect to
the unused portion of such lines of credit.

  (14)  Disposal of Spent  Nuclear  Fuel.  Under the Nuclear Waste Policy Act of
1982, the DOE is responsible  for the selection and  development of repositories
for, and the disposal of, spent nuclear fuel and high-level  radioactive  waste.
ComEd,  as required by that Act,  has  entered  into a contract  with the DOE to
provide for the disposal of spent nuclear fuel and high-level  radioactive waste
from ComEd's  nuclear  generating  stations.  The contract with the DOE requires
ComEd to pay the DOE a one-time fee  applicable  to nuclear  generation  through
April 6, 1983 of $277  million,  with  interest  to date of  payment,  and a fee
payable  quarterly equal to one mill per kilowatthour of  nuclear-generated  and
sold  electricity  after  April 6, 1983.  Pursuant  to the  contract,  ComEd has
elected to pay the one-time fee, with interest, just prior to the first delivery
of spent  nuclear  fuel to the DOE. The  liability  for the one-time fee and the
related interest is reflected on the Consolidated  Balance Sheets.  The contract
also provided for  acceptance  by the DOE of such  materials to begin in January
1998;  however,  that date was not met by the DOE and is  expected to be delayed
significantly.  The DOE's current estimate for opening a facility to accept such
waste is 2010.  This extended delay in spent nuclear fuel  acceptance by the DOE
has led to ComEd's consideration of additional dry storage alternatives. On July
30, 1998, ComEd filed a complaint against the United States in the United States
Court of Federal Claims  seeking to recover  damages caused by the DOE's failure
to honor its contractual  obligation to begin disposing of spent nuclear fuel in
January 1998. On November 5, 1999,  ComEd's case was stayed pending the decision
of the United States Court of Appeals for the Federal Circuit in several similar
cases brought by other utilities.



<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                   NOTES TO FINANCIAL STATEMENTS--Continued

  (15)  Fair  Value  of  Financial   Instruments.   The  following  methods  and
assumptions were used to estimate the fair value of financial instruments either
held, or issued and  outstanding.  The disclosure of such  information  does not
purport to be a market valuation of Unicom and subsidiary  companies as a whole.
The  impact  of any  realized  or  unrealized  gains or losses  related  to such
financial  instruments  on the  financial  position or results of  operations of
Unicom  and  subsidiary  companies  is  primarily  dependent  on  the  treatment
authorized under future ComEd ratemaking proceedings.

  Investments.  Securities  included in the nuclear  decommissioning  funds have
been  classified  and  accounted  for as "available  for sale"  securities.  The
estimated fair value of the nuclear  decommissioning funds, as determined by the
trustee and based on published market data, as of December 31, 1999 and 1998 was
as follows:

<TABLE>
<CAPTION>
                                December 31, 1999                December 31, 1998
                         -------------------------------- --------------------------------
                                    Unrealized
                                      Gains/                         Unrealized
                         Cost Basis  (Losses)  Fair Value Cost Basis   Gains    Fair Value
                         ---------- ---------- ---------- ---------- ---------- ----------
                                              (Thousands of Dollars)
<S>                      <C>         <C>       <C>        <C>         <C>       <C>
Short-term investments.. $   41,362  $     95  $   41,457 $   40,907  $     42  $   40,949
U.S. Government and
 Agency issues..........    245,399    (1,993)    243,406    197,240    20,213     217,453
Municipal bonds.........    383,816      (940)    382,876    416,121    24,124     440,245
Corporate bonds.........    196,942    (5,699)    191,243    241,111     8,790     249,901
Common stock............    832,802   732,893   1,565,695    740,956   565,630   1,306,586
Other...................    125,072    (3,209)    121,863     11,345       838      12,183
                         ----------  --------  ---------- ----------  --------  ----------
                         $1,825,393  $721,147  $2,546,540 $1,647,680  $619,637  $2,267,317
                         ==========  ========  ========== ==========  ========  ==========
</TABLE>


  At December 31, 1999, the debt securities held by the nuclear  decommissioning
funds had the following maturities:

                                                           Cost Basis Fair Value
                                                           ---------- ----------
                                                               (Thousands of
                                                                 Dollars)

      Within 1 year.......................................  $ 47,853   $ 48,421
      1 through 5 years...................................   263,588    263,117
      5 through 10 years..................................   227,927    225,860
      Over 10 years.......................................   409,823    400,358


   The net earnings of the nuclear  decommissioning funds, which are recorded in
the accumulated  provision for  depreciation,  for the years 1999, 1998 and 1997
were as follows:

                                                   1999       1998       1997
                                                ---------- ---------- ----------
                                                     (Thousands of Dollars)

Gross proceeds from sales of securities.......  $1,765,000 $1,795,484 $2,163,522
Less cost based on specific identification....   1,718,151  1,728,092  2,088,300
                                                ---------- ---------- ----------
Realized gains on sales of securities.........  $   46,849 $   67,392 $   75,222
Other realized fund earnings, net of expenses.      62,927     40,374     39,123
                                                ---------- ---------- ----------
Total realized net earnings of the funds......  $  109,776 $  107,766 $  114,345
Unrealized gains..............................     101,510    190,503    198,741
                                                ---------- ---------- ----------
 Total net earnings of the funds..............  $ 211,286  $  298,269 $  313,086
                                                ========== ========== ==========



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                   NOTES TO FINANCIAL STATEMENTS--Continued

  Securities  held by certain  trusts,  which were  established  to provide  for
supplemental  retirement  benefits  and  executive  medical  claims,  have  been
classified  and accounted for as "available  for sale." The estimated fair value
of these securities,  as determined by the trustee and based on published market
data, as of December 31, 1999 was as follows:



                                                      Cost   Unrealized  Fair
                                                      Basis     Gain     Value
                                                     ------- ---------- -------
                                                       (Thousands of Dollars)

Short-term investments.............................. $   162  $   --    $   162
Registered investment companies.....................  21,641   12,471    34,112
                                                     -------  -------   -------
                                                     $21,803  $12,471   $34,274
                                                     =======  =======   =======



  Current Assets. Cash, temporary cash investments,  cash held for redemption of
securities and other cash investments, which include U.S. Government obligations
and other short-term marketable securities,  and special deposits, are stated at
cost, which approximates their fair value because of the short maturity of these
instruments. The securities included in these categories have been classified as
"available for sale" securities.

  Capitalization.  The estimated  fair values of ComEd  preferred and preference
stocks,   ComEd-obligated   mandatorily   redeemable   preferred  securities  of
subsidiary   trusts  holding  solely  ComEd's   subordinated   debt  securities,
transitional  trust notes and long-term  debt were obtained from an  independent
consultant.  The estimated  fair values,  which include the current  portions of
redeemable  preference stock and long-term debt but exclude accrued interest and
dividends, as of December 31, 1999 and 1998 were as follows:


<TABLE>
<CAPTION>
                                December 31, 1999                 December 31, 1998
                         --------------------------------- --------------------------------
                                    Unrealized
                          Carrying   Losses/                Carrying  Unrealized    Fair
                           Value     (Gains)    Fair Value   Value      Losses     Value
                         ---------- ----------  ---------- ---------- ---------- ----------
                                              (Thousands of Dollars)
<S>                      <C>        <C>         <C>        <C>         <C>       <C>
ComEd preferred and
 preference stocks...... $   71,265 $      58   $   71,323 $  678,156  $ 11,500  $  689,656
ComEd-obligated
 mandatorily redeemable
 preferred securities of
 subsidiary trusts
 holding solely ComEd's
 subordinated debt
 securities............. $  350,000 $ (10,595)  $  339,405 $  350,000  $ 20,678  $  370,678
Transitional trust
 notes.................. $3,057,112 $(163,600)  $2,893,512 $3,382,821  $ 67,168  $3,449,989
Long-term debt.......... $4,757,062 $ (23,987)  $4,733,075 $5,911,757  $451,240  $6,362,997
</TABLE>



  Long-term notes payable,  which are not included in the above table,  amounted
to $53 million and $100 million as of December 31, 1999 and 1998,  respectively.
Such  notes,  for which  interest  is paid at fixed and  prevailing  rates,  are
included in the consolidated  financial  statements at cost, which  approximates
their fair value.



<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  Current  Liabilities.  The carrying value of notes payable,  which consists of
commercial paper and bank loans maturing within one year,  approximates the fair
value because of the short maturity of these instruments.  See  "Capitalization"
above for a  discussion  of the fair value of the current  portion of  long-term
debt and redeemable preference stock.

  Other Noncurrent Liabilities. The carrying value of accrued spent nuclear fuel
disposal fee and related interest represents the settlement value as of December
31, 1999 and 1998; therefore, the carrying value is equal to the fair value.

  (16) Pension and Postretirement Benefits. As of December 31, 1999, ComEd had a
qualified non-contributory defined benefit pension plan which covers all regular
employees  of ComEd and certain of Unicom's  subsidiaries.  Benefits  under this
plan  reflect  each  employee's  compensation,  years  of  service  and  age  at
retirement. Funding is based upon actuarially determined contributions that take
into  account  the amount  deductible  for income tax  purposes  and the minimum
contribution required under the Employee Retirement Income Security Act of 1974,
as amended.  The December 31, 1999 and 1998 pension liabilities and related data
were  determined  using the January 1, 1999 actuarial  valuation.  Additionally,
ComEd  maintains a nonqualified  supplemental  retirement  plan which covers any
excess pension benefits that would be payable to management  employees under the
qualified  plan but which are limited by the  Internal  Revenue  Code.  In 1998,
Indiana Company's qualified defined benefit pension plan was merged into ComEd's
pension plan as a result of the sale of Indiana Company's State Line Station and
the transfer of its remaining employees to ComEd.

  ComEd and  certain of Unicom's  subsidiaries  provide  certain  postretirement
medical,  dental and vision  care,  and life  insurance  for  retirees and their
dependents and for the surviving  dependents of eligible employees and retirees.
Generally,  the employees  become eligible for  postretirement  benefits if they
retire no  earlier  than age 55 with ten years of  service.  The  liability  for
postretirement  benefits is funded  through  trust funds based upon  actuarially
determined contributions that take into account the amount deductible for income
tax  purposes.  The health care plans are  contributory,  funded  jointly by the
companies  and the  participating  retirees.  The  December  31,  1999  and 1998
postretirement  benefit  liabilities and related data were determined  using the
January 1, 1999 actuarial valuations.

  Reconciliations  of the beginning and ending balances of the projected pension
benefit obligation and the accumulated  postretirement  benefit obligation,  and
the funded status of these plans for the years 1999 and 1998 were as follows:

                             Twelve Months Ended        Twelve Months Ended
                              December 31, 1999          December 31, 1998
                          -------------------------- --------------------------
                                          Other                      Other
                           Pension    Postretirement  Pension    Postretirement
                           Benefits      Benefits     Benefits      Benefits
                          ----------  -------------- ----------  --------------
                                        (Thousands of Dollars)
Change in benefit obligation
-----------------
Benefit obligation at
 beginning of period....  $4,326,000    $1,236,000   $4,010,000    $1,139,000
Service cost............     120,000        41,000      115,000        38,000
Interest cost...........     285,000        82,000      273,000        78,000
Plan participants' con-
 tributions.............         --          4,000          --          3,000
Actuarial loss/(gain)...    (458,000)     (188,000)     165,000        25,000
Benefits paid...........    (241,000)      (51,000)    (237,000)      (47,000)
Special termination ben-
 efits..................      62,000        27,000          --            --
                          ----------    ----------   ----------    ----------
 Benefit obligation at
  end of period.........  $4,094,000    $1,151,000   $4,326,000    $1,236,000
                          ----------    ----------   ----------    ----------



<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

Change in plan assets
---------------------

Fair value of plan as-
 sets at beginning of
 period.................  $4,015,000    $  865,000   $3,706,000    $  767,000
Actual return on plan
 assets.................     492,000       105,000      535,000       122,000
Employer contribution...       3,000        24,000       11,000        20,000
Plan participants' con-
 tributions.............         --          4,000          --          3,000
Benefits paid...........    (241,000)      (51,000)    (237,000)      (47,000)
                          ----------    ----------   ----------    ----------
 Fair value of plan as-
  sets at end of period.  $4,269,000    $  947,000   $4,015,000    $  865,000
                          ----------    ----------   ----------    ----------
Plan assets
 greater/(less) than
 benefit obligation.....  $  175,000    $ (204,000)  $ (311,000)   $ (371,000)
Unrecognized net actuar-
 ial loss/(gain)........    (523,000)     (555,000)      36,000      (371,000)
Unrecognized prior serv-
 ice cost/(asset).......     (51,000)       41,000      (60,000)       48,000
Unrecognized transition
 obligation/(asset).....     (79,000)      276,000     (101,000)      323,000
                          ----------    ----------   ----------    ----------
 Accrued liability for
  benefits..............  $ (478,000)   $ (442,000)  $ (436,000)   $ (371,000)
                          ==========    ==========   ==========    ==========


  The assumed  discount  rate used to  determine  the benefit  obligation  as of
December 31, 1999 and 1998 was 7.75% and 6.75%, respectively.  The fair value of
plan assets  excludes  $25 million and $21 million  held in grantor  trust as of
December 31, 1999 and 1998, respectively,  for the payment of benefits under the
supplemental  plan and $9 million and $7 million  held in a grantor  trust as of
December  31, 1999 and 1998,  respectively,  for the  payment of  postretirement
medical benefits.

  The components of pension and other postretirement  benefit costs, portions of
which were recorded as components of construction  costs,  for the years,  1999,
1998 and 1997 were as follows:

                                                  1999      1998       1997
                                                --------  ---------  ---------
                                                     (Thousands of Dollars)

Pension Benefit Costs
---------------------
Service cost..................................  $120,000  $ 115,000  $ 100,000
Interest cost on projected benefit obligation.   285,000    273,000    261,000
Expected return on plan assets................  (362,000)  (342,000)  (310,000)
Amortization of transition asset..............   (13,000)   (12,000)   (13,000)
Amortization of prior service asset...........    (4,000)    (4,000)    (4,000)
Recognized loss...............................     3,000      2,000      2,000
Curtailment (gain)/loss.......................    16,000        --      (5,000)
                                                --------  ---------  ---------
 Net periodic benefit cost....................  $ 45,000   $ 32,000  $  31,000
                                                ========  =========  =========


<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

Other Postretirement Benefit Costs
----------------------------------
Service cost..................................  $ 41,000   $ 38,000  $  34,000
Interest cost on accumulated benefit
 obligation...................................    82,000     78,000     76,000
Expected return on plan assets................   (76,000)   (69,000)   (61,000)
Amortization of transition obligation.........    22,000     22,000     22,000
Amortization of prior service cost............     4,000      4,000      4,000
Recognized gain...............................   (14,000)   (14,000)   (13,000)
Severance plan cost...........................     1,000      6,000      8,000
Curtailment loss..............................    35,000        --         --
                                                --------  ---------  ---------
 Net periodic benefit cost....................  $ 95,000   $ 65,000  $  70,000
                                                ========  =========  =========


  In  accounting  for the pension costs and other  postretirement  benefit costs
under the plans, the following weighted average actuarial  assumptions were used
for the periods during 1999, 1998 and 1997:

                                                                 Other
                                      Pension Benefits  Postretirement Benefits
                                      ----------------- -----------------------
                                      1999  1998  1997   1999    1998    1997
                                      ----- ----- ----- ------- ------- -------

Annual discount rate................. 6.75% 7.00% 7.50%   6.75%   7.00%   7.50%
Annual long-term rate of return on
 plan assets......................... 9.25% 9.50% 9.75%   8.97%   9.20%   9.40%
Annual rate of increase in future
 compensation levels................. 4.00% 4.00% 4.00%     --      --      --


  The pension  curtailment  gain in December 1997  represents the recognition of
prior  service  costs,  the  transition  asset and the decrease in the projected
benefit  obligation  related to the  reduction in the number of employees due to
Indiana   Company's   sale  of  State  Line  Station.   The  pension  and  other
postretirement  benefit  curtailment  losses  in  December  1999  represent  the
recognition of prior service costs and transition  obligations,  and an increase
in the benefit obligations resulting from special termination benefits,  related
to the  reduction in the number of  employees  due to ComEd's sale of the fossil
stations.

  The health  care cost trend  rates used to measure  the  expected  cost of the
postretirement  medical  benefits  are  assumed  to  be  8.0%  for  pre-Medicare
recipients and 6.0% for Medicare recipients for 1999. Those rates are assumed to
decrease  in  0.5%  annual  increments  to 5%  for  the  years  2005  and  2001,
respectively,  and to remain level thereafter. The health care cost trend rates,
used to measure the expected cost of postretirement  dental and vision benefits,
are a level 3.5% and 2.0% per year, respectively. Assumed health care cost trend
rates have a  significant  effect on the  amounts  reported  for the health care
plans. A one percentage point change in the assumed health care cost trend rates
would have the following effects:


                                                    1 Percentage   1 Percentage
                                                   Point Increase Point Decrease
                                                   -------------- --------------
                                                      (Thousands of Dollars)

Effect on total 1999 service and interest cost
 components......................................    $  26,000      $ (20,000)
Effect on postretirement benefit obligation as of
 December 31, 1999...............................      190,000       (151,000)



<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  In addition,  an employee savings and investment plan is available to eligible
employees of ComEd and certain of its and Unicom's subsidiaries. Under the plan,
each participating employee may contribute up to 20% of such employee's base pay
and the participating companies match the first 6% of such contribution equal to
100%  of the  first  2% of  contributed  base  salary,  70% of  the  next  3% of
contributed base salary and 25% of the next 1% of contributed  base salary.  The
participating  companies'  contributions  were $32 million,  $32 million and $33
million for the years 1999, 1998 and 1997, respectively.

  (17) Separation Plan Costs. O&M expenses included $10 million, $48 million and
$39 million for the years 1999, 1998 and 1997,  respectively,  for costs related
to  voluntary  separation  offers to  certain  employees  of ComEd  and  Indiana
Company, as well as certain other employee-related costs. Such costs resulted in
charges of $6 million  (after-tax),  or $0.03 per common  share  (diluted),  $29
million  (after-tax),  or $0.13 per  common  share  (dilutive)  and $24  million
(after-tax),  or $0.11 per common share (diluted),  for the years 1999, 1998 and
1997,  respectively.  See Note 5 regarding employee  separation costs related to
the fossil plant sale.

  (18) Income Taxes.  The components of the net deferred income tax liability at
December 31, 1999 and 1998 were as follows:

                                                              December 31
                                                         ----------------------
                                                            1999        1998
                                                         ----------  ----------
                                                             (Thousands of
                                                               Dollars)

Deferred income tax liabilities:
 Accelerated cost recovery and liberalized deprecia-
  tion, net of removal costs...........................  $2,815,972  $4,028,351
 Overheads capitalized.................................     159,836     140,922
 Repair allowance......................................     221,502     233,861
 Regulatory assets recoverable through future rates....     688,946     680,356
Deferred income tax assets:
 Postretirement benefits...............................    (376,538)   (331,651)
 Unamortized investment tax credits....................    (161,756)   (191,135)
 Regulatory liabilities to be settled through future
  rates................................................    (596,157)   (595,005)
 Nuclear plant closure.................................      (5,456)    (38,354)
 Other--net............................................    (321,522)   (146,224)
                                                         ----------  ----------
Net deferred income tax liability......................  $2,424,827  $3,781,121
                                                         ==========  ==========



  The $1,356  million  decrease in the net deferred  income tax  liability  from
December 31, 1998 to December 31, 1999 is comprised of a $1,377  million  credit
to net  deferred  income tax expense  pertaining  primarily  to the fossil plant
sale, a $7 million increase in regulatory  assets net of regulatory  liabilities
pertaining  to income  taxes for the period,  and $14  million  related to other
items.  The amount of  accelerated  cost recovery and  liberalized  depreciation
included in deferred income tax liabilities  for both periods  includes  amounts
related to the regulatory  asset for impaired  production  plant.  The amount of
regulatory assets included in deferred income tax liabilities  primarily relates
to the equity  component of AFUDC which is recorded on an after-tax  basis,  the
borrowed funds  component of AFUDC which was previously  recorded net of tax and
other  temporary  differences  for  which  the  related  tax  effects  were  not
previously  recorded.  The amount of other  regulatory  liabilities  included in
deferred income tax assets  primarily  relates to deferred income taxes provided
at rates in excess of the current statutory rate.


<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  The  components  of net income tax expense  charged/(credited)  to  continuing
operations for the years 1999, 1998 and 1997 were as follows:

                                                  1999       1998      1997
                                               ----------  --------  ---------
                                                     (Thousands of Dollars)

Operating income:
 Current income taxes........................  $1,762,281  $304,889  $ 255,057
 Deferred income taxes.......................  (1,403,083)   50,134     62,501
 Investment tax credits deferred--net........     (25,828)  (27,730)   (31,015)
Other (income) and deductions:
 Current income taxes........................         457   (51,816)     1,116
 Deferred income taxes.......................      25,739    59,458   (385,994)
 Investment tax credits......................     (51,740)  (12,107)   (22,526)
                                               ----------  --------  ---------
Net income taxes charged/(credited) to con-
 tinuing operations..........................  $  307,826  $322,828  $(120,861)
                                               ==========  ========  =========

  Provisions  for  current  and  deferred  federal  and state  income  taxes and
amortization  of  investment  tax credits  resulted in the  following  effective
income tax rates for the years 1999, 1998 and 1997:

                                                    1999      1998      1997
                                                  --------  --------  ---------
                                                     (Thousands of Dollars)

Net income/(loss) before extraordinary items....  $597,245  $510,184  $(239,215)
Net income taxes charged/(credited) to continu-
 ing operations.................................   307,826   322,828   (120,861)
Provision for dividends on ComEd preferred and
 preference stocks..............................    23,756    56,884     60,486
                                                  --------  --------  ---------
Pre-tax income/(loss) before extraordinary items
 and provision for dividends....................  $928,827  $889,896  $(299,590)
                                                  --------  --------  ---------
Effective income tax rate.......................      33.1%     36.3%      40.3%
                                                  ========  ========  =========

  The  principal  differences  between net income  taxes  charged/(credited)  to
continuing  operations and the amounts computed at the federal statutory rate of
35% for the years 1999, 1998 and 1997 were as follows:

                                                    1999      1998      1997
                                                  --------  --------  ---------
                                                      (Thousands of Dollars)

Federal income taxes computed at statutory rate.  $325,089  $311,464  $(104,857)
Equity component of AFUDC which was excluded
 from taxable income............................      (436)     (390)    (8,320)
Amortization of investment tax credits, net of
 deferred income taxes..........................   (48,216)  (25,503)   (53,541)
State income taxes, net of federal income taxes.    45,882    40,899       (682)
Unrealized loss/(gain) on forward share
 repurchase contract............................    15,390       --         --
Earnings on nontax-qualified decommissioning
 fund...........................................    (8,915)      --         --
Differences between book and tax accounting,
 primarily property-related deductions..........   (20,968)   (3,642)    46,539
                                                  --------  --------  ---------
Net income taxes charged/(credited) to
 continuing operations..........................  $307,826  $322,828  $(120,861)
                                                  ========  ========  =========



<PAGE>

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  (19) Taxes,  Except Income Taxes.  Provisions for taxes,  except income taxes,
for the years 1999, 1998 and 1997 were as follows:

                                                        1999     1998     1997
                                                      -------- -------- --------
                                                        (Thousands of Dollars)

Illinois public utility revenue...................... $    981 $114,981 $228,350
Illinois invested capital............................      --       --    99,503
Illinois electricity distribution tax................  114,241  110,026      --
Municipal utility gross receipts.....................   99,701  152,501  168,094
Real estate..........................................  115,208  125,521  151,508
Municipal compensation...............................   73,349   89,210   78,286
Energy assistance and renewable energy charge........   34,423   32,736      --
Other--net...........................................   70,550   74,859   75,145
                                                      -------- -------- --------
                                                      $508,453 $699,834 $800,886
                                                      ======== ======== ========


  Effective  January 1, 1998, the Illinois invested capital tax was repealed and
the Illinois electricity distribution tax was enacted as a replacement.  The new
tax is based on the kilowatthours delivered to ultimate consumers.

  The 1997 Act changed the nature of several state and municipal  taxes that are
collected through customer billings.  Before August 1998, the utility taxes were
assessed  against the  utility.  Effective  August 1998,  the utility  taxes are
assessed on the electric  consumer rather than the utility.  Accordingly,  ComEd
records the collections as liabilities and no longer records the taxes collected
through  billings  as revenues  and tax  expense.  The  reduction  in  operating
revenues and taxes,  except income taxes,  due to the change in presentation for
such taxes was  approximately  $174 million in 1999,  compared to 1998, and $110
million in 1998,  compared to 1997. This change in  presentation  for such taxes
did not have an effect on operations.

  See Note 22 for additional  information  regarding  Illinois  invested capital
taxes.

  (20) Lease Obligations of Subsidiary  Companies.  Under its nuclear fuel lease
arrangement,  ComEd may sell and lease back  nuclear  fuel from a lessor who may
borrow an aggregate of $267 million,  consisting of intermediate  term notes, to
finance the transactions.  A commercial  paper/bank borrowing portion expired on
November 23,  1999.  With respect to the  intermediate  term notes,  $75 million
expires on November 23,  2000,  $40 million  expires on November  23, 2001,  $77
million  expires on November  23, 2002 and $75 million  expires on November  23,
2003. At December 31, 1999,  ComEd's obligation to the lessor for leased nuclear
fuel  amounted to  approximately  $270  million.  ComEd has agreed to make lease
payments  which  cover the  amortization  of the  nuclear  fuel used in  ComEd's
reactors plus the lessor's related financing costs.  ComEd has an obligation for
spent nuclear fuel disposal costs of leased nuclear fuel.

  As of December 31, 1999,  future  minimum  rental  payments,  net of executory
costs, for capital leases are estimated to aggregate to $298 million,  including
$121 million in 2000,  $96 million in 2001,  $48 million in 2002 and $33 million
in 2003. The estimated interest component of such rental payments aggregates $27
million. The estimated portions of obligations due within one year under capital
leases  of $108  million  and $195  million  at  December  31,  1999  and  1998,
respectively,  were included in current liabilities on the Consolidated  Balance
Sheets.

  Future minimum rental  payments at December 31, 1999 for operating  leases are
estimated to  aggregate  to $305  million,  including  $33 million in 2000,  $27
million in 2001,  $27 million in 2002,  $24 million in 2003, $23 million in 2004
and $171 million in 2005-2043.



<PAGE>


                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  (21) Joint Plant Ownership.  ComEd has a 75% undivided  ownership  interest in
the Quad Cities nuclear generating  station.  Further,  ComEd is responsible for
75% of all costs which are charged to  appropriate  investment and O&M accounts,
and  provides  its  own  financing.  ComEd's  net  plant  investment,  including
construction  work in  progress,  in Quad  Cities  Station  on the  Consolidated
Balance  Sheets was $22 million at  December  31,  1999,  after  reflecting  the
accounting  impairment recorded in the second quarter of 1998. See Note 1, under
"Regulatory Assets and Liabilities," for additional information.

  (22) Commitments and Contingent Liabilities. Purchase commitments, principally
related to  construction,  nuclear  fuel,  and coal in support of certain  power
purchase agreements approximated $799 million at December 31, 1999, comprised of
$670  million for ComEd,  $27 million  for UT  Holdings,  $24 million for Unicom
Energy  Services and $78 million for Unicom Power Holdings.  In addition,  ComEd
has  substantial  commitments for expected  capacity  payments and fixed charges
related to power purchase  agreements.  Upon completion of the fossil plant sale
with EME,  ComEd  entered into  arrangements  to assign or settle a  substantial
portion  of its coal  purchase  commitments  and  entered  into  purchase  power
agreements  with EME.  See  "Management's  Discussion  and Analysis of Financial
Condition  and  Results  of  Operations,"   subcaption  "Liquidity  and  Capital
Resources--UTILITY OPERATIONS--Construction Program," for additional information
regarding ComEd's purchase commitments.

  ComEd is a member of NEIL which provides  insurance  coverage against property
damage and  associated  replacement  power costs  occurring at members'  nuclear
generating   facilities.   All  companies  insured  with  NEIL  are  subject  to
retrospective  premium  adjustments if losses exceed accumulated  reserve funds.
Capital has been  accumulated  in the reserve funds such that ComEd would not be
liable for any single incident.  However,  ComEd could be subject to assessments
in any policy  year for each of three types of  coverage  provided.  The maximum
assessments  are  approximately  $53 million for primary  property  damage,  $73
million for excess property damage and $22 million for replacement power.

  The NRC's indemnity for public liability coverage under the Price-Anderson Act
is supported by a mandatory  industry-wide program under which owners of nuclear
generating facilities could be assessed in the event of nuclear incidents. Based
on the number of nuclear reactors with operating licenses, ComEd would currently
be  subject  to a  maximum  assessment  of  $1,145  million  in the  event of an
incident, limited to a maximum of $130 million in any calendar year.

  In addition, ComEd participates in the American Nuclear Insurers Master Worker
Program,  which provides coverage for worker tort claims filed for bodily injury
caused by the  nuclear  energy  hazard.  This  program was  modified,  effective
January 1, 1998,  to provide  coverage  to all  workers  whose  "nuclear-related
employment" began on or after the commencement date of reactor operations. ComEd
will not be  liable  for a  retrospective  assessment  under  this  new  policy.
However, ComEd is still subject to a maximum retroactive assessment of up to $36
million in the event losses  incurred  under the small number of policies in the
old program exceed accumulated reserves.

  Three of ComEd's wholesale  municipal  customers filed a complaint and request
for refund with the FERC  alleging  that ComEd  failed to properly  adjust their
rates, as provided for under the terms of their electric service  contracts,  to
track certain refunds made to ComEd's retail customers in the years 1992 through
1994. In the third quarter of 1998,  the FERC granted the complaint and directed
that refunds be made,  with interest.  ComEd filed and was granted a request for
rehearing for purposes of reconsideration with the FERC. If the order is upheld,
ComEd must make refunds within 15 days of the resolution for rehearing.  ComEd's
management  believes an adequate reserve has been established in connection with
this case.



<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  During 1989 and 1991,  actions  were  brought in federal  and state  courts in
Colorado  against ComEd and Cotter  seeking  unspecified  damages and injunctive
relief based on  allegations  that Cotter has  permitted  radioactive  and other
hazardous  material to be released from its mill into areas owned or occupied by
the  plaintiffs  resulting  in  property  damage and  potential  adverse  health
effects.  With respect to Cotter, in 1994 a federal jury returned nominal dollar
verdicts  against Cotter on eight  plaintiffs'  claims in the 1989 cases,  which
verdicts were upheld on appeal.  The  remaining  claims in the 1989 actions have
been  settled and  dismissed.  On July 15,  1998, a jury verdict was rendered in
Dodge v. Cotter  (United  States  District  Court for the  District of Colorado,
Civil Action No. 91-Z-1861), a case relating to 14 of the plaintiffs in the 1991
cases.  The  verdict  against  Cotter  and in favor of the  plaintiff,  after an
amended judgement was issued March 11, 1999,  totaled  approximately $6 million,
including  compensatory and punitive damages,  interest, and medical monitoring.
On February 11, 2000,  the Tenth  Circuit  Court of Appeals  agreed with Cotter,
found that the trial judge had erred in critical  rulings and  reversed the jury
verdict,  remanding the case for new trial.  A case  involving the next group of
plaintiffs  is set for trial in federal  district  court in Denver on October 2,
2000.  Although ComEd sold its investment in Cotter in February 2000, ComEd will
continue  to be liable for any court  verdicts in favor of the  plaintiffs.  The
other 1991 cases will necessarily  involve the resolution of numerous  contested
issues of law and fact. It is Unicom and ComEd's  assessment  that these actions
will not have a  material  impact on their  financial  position  or  results  of
operations.

  In August 1999,  three class action  lawsuits were filed against ComEd related
to a series of service  interruptions  during the summer of 1999.  The  combined
effect of these events resulted in over 100,000  customers  losing  service.  On
August 12, 1999,  service was  interrupted to ComEd  customers on the near north
and  near  west  side of the  City's  central  business  district.  While  major
commercial  customers were affected,  all service was restored on the same date.
The class action  complaints have been  consolidated and seek to recover damages
for personal  injuries and property  damage,  as well as economic loss for these
events.  Further,  ComEd initiated  expedited  claim  settlements for those with
primarily  food  spoilage  claims.  Conditional  class  certification  has  been
approved by the Court for the sole purpose of exploring  settlement  talks.  The
lawsuits  are pending in the  Circuit  Court of Cook  County.  ComEd has filed a
motion  challenging the legal  sufficiency of the consolidated  complaints.  The
plaintiff's response is due April 14, 2000 and any reply by ComEd is due May 12,
2000. The motion to dismiss is currently scheduled to be argued on May 23, 2000.
ComEd's   management   believes  adequate  reserves  have  been  established  in
connection with these cases.

  Following the above-referenced series of service interruptions, the ICC opened
a  three-phase   investigation   of  the  design  and   reliability  of  ComEd's
transmission  and  distribution  system.  At the conclusion of each phase of the
investigation,   the  ICC  will  issue  a  report  that  will  include  specific
recommendations  for ComEd and a timetable for  executing  the  recommendations.
Hearings on Phase I of the investigation  were held the week of January 3, 2000,
which  focused on the outages of July and August  1999.  Reports on Phase II and
Phase III, focusing on the transmission and distribution  system generally,  are
anticipated in the second quarter of 2000. The final phase of the  investigation
is expected to conclude in early 2001.

  ComEd is involved  in  administrative  and legal  proceedings  concerning  air
quality,  water quality and other matters.  The outcome of these proceedings may
require increases in future construction expenditures and operating expenses and
changes in operating procedures. ComEd and its subsidiaries are or are likely to
become parties to proceedings  initiated by the U.S. EPA, state agencies  and/or
other  responsible  parties  under  CERCLA  with  respect  to a number of sites,
including MGP sites, or may  voluntarily  undertake to investigate and remediate
sites for which they may be liable under CERCLA.



<PAGE>



                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued

  ComEd generally did not operate MGPs as a corporate  entity but did,  however,
acquire MGP sites as part of the absorption of smaller utilities.  Approximately
half of these  sites were  transferred  to then  Northern  Illinois  Gas Company
(Nicor Gas) as part of a general  conveyance in 1954. ComEd also acquired former
MGP sites as vacant real estate on which ComEd facilities have been constructed.
To date, ComEd has identified 44 former MGP sites for which it may be liable for
remediation. In the fourth quarter of 1999, ComEd re-evaluated its environmental
remediation strategies. As a result of this re-evaluation,  ComEd's current best
estimate of its cost of former MGP site  investigation  and  remediation  is $93
million in  current-year  (2000)  dollars  (reflecting a discount rate of 6.5%).
Such  estimate,  reflecting  an  estimated  inflation  rate of 3% and before the
effects  of  discounting,  is  $182  million.  It is  expected  that  the  costs
associated  with  investigation  and  remediation  of former  MGP sites  will be
substantially  incurred through 2012, however monitoring and certain other costs
are expected to be incurred through 2042.  ComEd's current estimate of its costs
of  former  MGP site  investigation  and  remediation  of $93  million  has been
included in other noncurrent  liabilities on the Consolidated  Balance Sheets as
of December 31,  1999.  The  increase in ComEd's  estimated  costs of former MGP
sites of $68 million in 1999 over 1998 was included in operation and maintenance
expenses  on Unicom  and  ComEd's  Statements  of  Consolidated  Operations.  In
addition,  as of December  31,  1999 and 1998,  a reserve of $8 million has been
included in other  noncurrent  liabilities on the  Consolidated  Balance Sheets,
representing  ComEd's estimate of the liability associated with cleanup costs of
sites other than former MGP sites.  These cost  estimates are based on currently
available  information  regarding the responsible parties likely to share in the
costs of responding to site contamination,  the extent of contamination at sites
for which the investigation has not yet been completed and the cleanup levels to
which sites are expected to have to be  remediated.  While ComEd may have rights
of reimbursement under insurance policies,  amounts that may be recoverable from
other entities are not considered in  establishing  the estimated  liability for
the environment remediation costs.

  The IDR has issued Notices of Tax Liability to ComEd alleging  deficiencies in
Illinois  invested  capital tax payments for the years 1988  through  1997.  The
alleged  deficiencies,  including interest and penalties,  totaled approximately
$52 million as of December 31, 1999.  ComEd has protested  the notices,  and the
matter is currently pending before the IDR's Office of Administrative  Hearings.
Interest will continue to accumulate on the alleged tax deficiencies.

  On March 22, 1999,  ComEd reached a settlement  agreement with the City to end
the arbitration  proceeding  between ComEd and the City regarding the January 1,
1992 franchise  agreement and a supplemental  agreement  between them. Under the
terms of the settlement  agreement,  the pending  arbitration is to be dismissed
with  prejudice  and the City is to  release  ComEd from all claims the City may
have under the supplemental agreement.  The settlement agreement was approved by
the City Council on May 12, 1999.

  As part of the  settlement  agreement,  ComEd  and the City  have  agreed to a
revised  combination  of ongoing  work  under the  franchise  agreement  and new
initiatives   that  will  result  in  defined   transmission   and  distribution
expenditures  by ComEd to improve  electric  service in the City. The settlement
agreement  provides  that ComEd will be  subject  to  liquidated  damages if the
projects are not completed by various  dates,  unless it is prevented from doing
so by events beyond its reasonable control.  ComEd's current construction budget
considers these projects. In addition,  ComEd and the City established an Energy
Reliability  and  Capacity  Account,  into which  ComEd  deposited  $25  million
following  the   effectiveness  of  the  settlement   agreement  and  ComEd  has
conditionally  agreed to  deposit  up to $25  million  at the end of each of the
years 2000,  2001 and 2002,  to help ensure an adequate  and  reliable  electric
supply for the City.



<PAGE>


                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                   NOTES TO FINANCIAL STATEMENTS--Continued

  The 1997 Act also  committed  ComEd  to spend at least $2  billion  from  1999
through 2004 on transmission and distribution facilities outside of the City.

  (23) Segment Reporting.  Unicom's reportable  operating segments as determined
under SFAS No. 131,  "Disclosures  about  Segments of an Enterprise  and Related
Information" include its regulated electric utility and its unregulated business
operations. Unicom's reportable segments are managed separately because of their
different  regulatory  and  operating   environments.   Unicom  evaluates  their
performance based on net income.

  ComEd is an electric  utility  which is engaged in the  generation,  purchase,
transmission,  distribution  and sale of electric  energy in Northern  Illinois.
ComEd's rates and services are subject to federal and state regulations.

  Unicom's  unregulated  business  operations,  including  energy  services  and
development of new business  ventures,  are not subject to utility regulation by
federal or state agencies.  Prior to 1999,  unregulated business operations were
predominately  in a developmental  stage and did not meet the revenue,  asset or
net income  criteria  for a reportable  segment  under SFAS 131.  However,  as a
result of the  December  1999 fossil  plant sale,  as  described  in Note 5, the
assets of unregulated  businesses  exceeded 10% of Unicom's total assets and, as
such, constitute a reportable segment. The assets of the unregulated  businesses
include  $2.2  billion at December 31, 1999  representing  special  deposits and
unused cash  proceeds  resulting  from the fossil plant sale.  The assets of the
unregulated  businesses  also include  receivables  of $813 million  recorded in
connection with forward share repurchase arrangements as discussed in Note 7.

  The  accounting  policies of the segments  are the same as those  described in
Note 1. Unicom's financial data for business segments are as follows:



                             Electric    Unregulated  Reconciliation
                              Utility    Businesses   & Elimination     Total
                            -----------  -----------  -------------- -----------
         1999                             (Thousands of Dollars)

Operating Revenue.........  $ 6,766,892  $  107,729    $   (26,674)  $ 6,847,947
Intersegment Revenue......  $     9,434  $   17,240    $   (26,674)  $       --
Depreciation, Amortization
 and Decommissioning......  $   836,145  $    7,103    $       --    $   843,248
Interest and Dividend
 Income...................  $    60,231  $    8,957    $   (10,646)  $    58,542
Interest Expense--Net.....  $   545,352  $   28,858    $   (10,646)  $   563,564
Income Tax
 Expense/(Benefit)........  $   352,222  $  (20,107)   $       --    $   332,115
Net Income/(Loss).........  $   622,729  $  (29,307)   $   (23,756)  $   569,666
Total Assets..............  $23,160,265  $3,720,376    $(3,474,608)  $23,406,033
Capital Expenditures......  $ 1,083,398  $  120,666    $       --    $ 1,204,064

         1998

Operating Revenue.........  $ 7,088,542  $   20,967    $    (6,099)  $ 7,103,410
Intersegment Revenue......  $     6,099  $      --     $    (6,099)  $       --
Depreciation, Amortization
 and Decommissioning......  $   937,604  $    5,684    $       --    $   943,288
Interest and Dividend
 Income...................  $    15,450  $    4,755    $    (1,573)  $    18,632
Interest Expense--Net.....  $   450,162  $   15,293    $    (1,573)  $   463,882
Income Tax
 Expense/(Benefit)........  $   378,423  $  (28,374)   $       --    $   350,049
Net Income/(Loss).........  $   594,206  $  (27,138)   $   (56,884)  $   510,184
Total Assets..............  $25,450,577  $  389,792    $  (149,896)  $25,690,473
Capital Expenditures......  $   945,342  $   21,152    $       --    $   966,494



<PAGE>

                   UNICOM CORPORATION AND SUBSIDIARY COMPANIES
                    NOTES TO FINANCIAL STATEMENTS--Continued
         1997

Operating Revenue.........  $ 7,073,088  $   14,331    $    (4,397)  $ 7,083,022
Intersegment Revenue......  $     4,397  $      --     $    (4,397)  $       --
Depreciation, Amortization
 and Decommissioning......  $ 1,001,149  $    3,940    $       --    $ 1,005,089
Interest and Dividend
 Income...................  $     4,911  $    3,590    $    (1,002)  $     7,399
Interest Expense--Net.....  $   487,664  $   10,505    $    (1,002)  $   497,167
Income Tax
 Expense/(Benefit)........  $   327,061  $  (20,513)   $       --    $   306,548
Net Income/(Loss).........  $  (773,773) $  (18,591)   $   (60,486)  $ (852,850)
Total Assets..............  $22,458,403  $  352,161    $  (110,814)  $22,699,750
Capital Expenditures......  $   969,626  $   73,685    $       --    $ 1,043,311



(24) Subsequent Event. In January 2000,  Unicom  physically  settled the forward
share  repurchase  arrangements  it had  with  financial  institutions  for  the
repurchase  of 26.3 million  Unicom  common  shares.  Prior to  settlement,  the
repurchase  arrangements were recorded as a receivable on Unicom's  Consolidated
Balance  Sheets  based on the  aggregate  market  value of the shares  under the
arrangements.  In 1999, net  unrealized  losses of $44 million  (after-tax),  or
$0.20 per common share were recorded related to the arrangements. The settlement
of the  arrangements  in  January  2000  resulted  in a  gain  of  $113  million
(after-tax), which will be recorded in the first quarter of 2000. The settlement
of the  arrangements  will also  result in a reduction  in Unicom's  outstanding
common shares and common stock equity, effective January 2000.




<PAGE>
<TABLE>
<CAPTION>
<S>                           <C>       <C>       <C>     <C>            <C>
                                                                     SCHEDULE II

                  UNICOM CORPORATION AND SUBSIDIARY COMPANIES

                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
                             (Thousands of Dollars)
--------------------------------------------------------------------------------

          Column A            Column B      Column C       Column D      Column E
----------------------------  --------- ----------------- ----------     --------
                                            Additions
                                        -----------------
                               Balance  Charged
                                 at     to Costs Charged                 Balance
                              Beginning   and    to Other                 at End
         Description           of Year  Expenses Accounts Deductions     of Year
----------------------------  --------- -------- -------- ----------     --------

For the Year Ended December
          31, 1997
----------------------------
Reserve Deducted From Assets
 in Consolidated Balance
 Sheet:
 Provision for uncollectible
  accounts..................  $ 12,893  $ 53,756  $  --   $ (49,105)     $ 17,544
                              ========  ========  ======  =========      ========
 Estimated obsolete materi-
  als.......................  $ 12,302  $ 62,000  $  --   $ (32,559)     $ 41,743
                              ========  ========  ======  =========      ========
Other Reserves:
 Estimated closing costs for
  Zion Station (c)..........  $    --   $194,000  $  --   $     --       $194,000
                              ========  ========  ======  =========      ========
 Estimated liabilities asso-
  ciated with remediation
  costs and former manufac-
  tured gas plant sites.....  $ 32,522  $  2,410  $  --   $  (2,910)(a)  $ 32,022
                              ========  ========  ======  =========      ========
 Accumulated provision for
  injuries and damages......  $ 53,972  $  8,565  $4,939  $ (18,213)(b)  $ 49,263
                              ========  ========  ======  =========      ========
For the Year Ended December
          31, 1998
----------------------------
Reserve Deducted From Assets
 in Consolidated Balance
 Sheet:
 Provision for uncollectible
  accounts..................  $ 17,544  $ 62,059  $  --   $ (30,958)     $ 48,645
                              ========  ========  ======  =========      ========
 Estimated obsolete materi-
  als.......................  $ 41,743  $ 23,945  $  --   $ (41,928)     $ 23,760
                              ========  ========  ======  =========      ========
Other Reserves:
 Estimated closing costs for
  Zion Station (c)..........  $194,000  $    --   $  --   $(114,970)     $ 79,030
                              ========  ========  ======  =========      ========
 Estimated liabilities asso-
  ciated with remediation
  costs and former manufac-
  tured gas plant sites.....  $ 32,022  $  6,950  $  --   $  (6,950)(a)  $ 32,022
                              ========  ========  ======  =========      ========



<PAGE>

 Accumulated provision for
  injuries and damages......  $ 49,263  $ 10,114  $8,875  $ (20,796)(b)  $ 47,456
                              ========  ========  ======  =========      ========
For the Year Ended December
          31, 1999
----------------------------
Reserve Deducted From Assets
 in Consolidated Balance
 Sheet:
 Provision for uncollectible
  accounts..................  $ 48,645  $ 90,254  $  --   $ (88,085)     $ 50,814
                              ========  ========  ======  =========      ========
 Estimated obsolete materi-
  als.......................  $ 23,760  $ 19,263  $  --   $ (15,968)     $ 27,055
                              ========  ========  ======  =========      ========
Other Reserves:
 Estimated closing costs for
  Zion Station (c)..........  $ 79,030  $    --   $  --   $ (79,030)     $    --
                              ========  ========  ======  =========      ========
 Estimated liabilities asso-
  ciated with remediation
  costs and former manufac-
  tured gas plant sites.....  $ 32,022  $ 73,729  $  --   $  (5,651)(a)  $100,100
                              ========  ========  ======  =========      ========
 Accumulated provision for
  injuries and damages......  $ 47,456  $ 27,868  $6,477  $ (27,204)(b)  $ 54,597
                              ========  ========  ======  =========      ========

<FN>
Notes:
(a) Expenditures for site investigation and remediation costs.
(b) Payments of claims and related costs.
(c) Estimated closing costs related to the permanent cessation of nuclear
    generation operations and retirement of facilities at ComEd's Zion Station.
</FN>
</TABLE>








<PAGE>


(b) Pro Forma Financial Information


           UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS

   The historical consolidated financial statements of Unicom have been adjusted
to give  effect to the  annualized  continuing  impacts  of the sale of  ComEd's
fossil  generating  plants and the  annualized  effects of Unicom's  issuance of
securitization  notes and related use of proceeds.  ComEd  completed the sale of
its fossil generating  plants on December 15, 1999. The historical  consolidated
financial statements of PECO Energy have been adjusted to give effect to its use
of the proceeds from its  securitization  of stranded  costs.  The unaudited pro
forma financial  statements do not give effect to the estimated cost savings and
revenue  enhancements  as a result of the merger or the costs to  achieve  these
savings and revenue  enhancements or one-time  merger-related  costs. The Unicom
and PECO  Energy  pro forma  adjustments  and the merger  are  reflected  in the
unaudited  combined  condensed  pro forma  balance  sheet as if they occurred on
September 30, 2000.  The unaudited pro forma  combined  condensed  statements of
income  for the nine  months  ended  September  30,  2000 and for the year ended
December 31, 1999 assume that these  transactions  were  completed on January 1,
1999.

   The following  unaudited pro forma combined  condensed  financial  statements
have been prepared to reflect the acquisition of Unicom by PECO Energy under the
purchase method of accounting. Under the purchase method of accounting, tangible
and identifiable intangible assets acquired and liabilities assumed are recorded
at their  current  fair  values.  The excess of the  purchase  price,  including
estimated fees and costs related to the merger,  over the net assets acquired is
classified  as  goodwill  on  the  accompanying  unaudited  pro  forma  combined
condensed balance sheet. The pro forma combined condensed  financial  statements
reflect  the  estimated  fair  values of the  assets  acquired  and  liabilities
assumed. Such estimates are subject to final valuation adjustments.

   The following  unaudited pro forma combined  condensed  financial  statements
should  be  read in  conjunction  with  the  consolidated  historical  financial
statements  and related  notes of PECO Energy and Unicom,  which are included in
Exelon's  Quarterly Report on Form 10-Q for the quarter ended September 30, 2000
and the PECO  Energy and Unicom  Annual  Reports on Form 10-K for the year ended
December 31, 1999.

   The following unaudited pro forma combined condensed financial statements are
for  illustrative  purposes  only.  They are not  necessarily  indicative of the
financial  position or  operating  results  that would have  occurred  had these
transactions been completed on January 1, 1999 or September 30, 2000, as assumed
above;  nor  is the  information  necessarily  indicative  of  future  financial
position or operating  results.  Results of operations and financial position in
the first year after consummation could differ  significantly from the unaudited
pro  forma  combined  condensed  financial  statements,  which are based on past
operations.  Future  operations  will be affected by various  factors  including
operating performance, energy market developments and other matters.

   The  historical   financial   statements  of  PECO  Energy  included  in  the
accompanying  pro forma  combined  condensed  financial  statements for the nine
months ended September 30, 2000 are unaudited.  The December 31, 1999 historical
financial  statements  of PECO  Energy  and Unicom and the  September  30,  2000
historical  financial  statements of Unicom were derived from audited  financial
statements but do not include all disclosures required by GAAP.




<PAGE>

               Unaudited Pro Forma Condensed Statement of Income

                        (Millions Except Per Share Data)

                For the Nine Month Period Ended September 30, 2000




                                                                         PECO
                                                                        Energy
                                                         PECO Energy   Prior to
                                                 PECO  Transition Bond  Merger
                                                Energy    Pro Forma       Pro
                                              As Filed  Adjustments(1)   Forma
                                              -------- --------------- --------

  Operating Revenues........................   $4,366       $--         $4,366
                                               ------       ----        ------
  Operating Expenses
    Fuel and Energy Interchange.............    1,515        --          1,515
    Operation and Maintenance...............    1,305        --          1,305
    Depreciation and Amortization...........      244        --            244
    Taxes Other Than Income Taxes...........      197        --            197
                                               ------       ----        ------
      Total Operating Expenses..............    3,261        --          3,261
                                               ------       ----        ------
  Operating Income..........................    1,105        --          1,105
                                               ------       ----        ------
  Other Income and Deductions
    Interest Expense........................     (333)        31          (302)
    Other, net..............................       71          4            75
                                               ------       ----        ------
      Total Other Income and Deductions.....     (262)        35          (227)
                                               ------       ----        ------
  Income Before Income Taxes and
   Extraordinary Item.......................      843         35           878
  Income Tax Expense........................      316         14           330
                                               ------       ----        ------
  Income Before Extraordinary Item..........   $  527       $ 21        $  548
                                               ======       ====        ======
  Preferred Stock Dividends.................   $    8       $ (1)       $    7
                                               ======       ====        ======
  Income Before Extraordinary Item per
   Share....................................   $ 2.96
                                               ======
  Income Before Extraordinary Item per
   Share--Diluted...........................   $ 2.94
                                               ======
  Average Basic Shares Outstanding..........    175.0
                                               ======
  Average Diluted Shares Outstanding........    176.0
                                               ======











             See accompanying Notes to Unaudited Pro Forma Combined
                         Condensed Financial Statements



<PAGE>

           Unaudited Pro Forma Combined Condensed Statement of Income

                        (Millions Except Per Share Data)

                For the Nine Month Period Ended September 30, 2000


<TABLE>
<CAPTION>
                                          PECO
                                         Energy
                                        Prior to  Unicom     Merger
                                          Merger    as     Pro Forma    Exelon
                                        Pro Forma  Filed  Adjustments Pro Forma
                                        --------- ------  -----------  ---------
<S>                                      <C>     <C>        <C>       <C>
  Operating Revenues...................  $4,366  $5,686     $(42)(7)   $10,010
  Operating Expenses
    Fuel and Energy Interchange........   1,515   1,705      (42)(7)     3,178
    Operation and Maintenance..........   1,305   1,749       25 (6)     3,079
    Depreciation and Amortization......     244     832     (161)(6)       915
    Goodwill Amortization..............      --      --       86 (6)        86
    Taxes Other Than Income Taxes......     197     406       --           603
                                         ------  ------     -----      -------
      Total Operating Expenses.........   3,261   4,692       (92)       7,861
                                         ------  ------     -----      -------
  Operating Income.....................   1,105     994        50        2,149
                                         ------  ------     -----      -------
  Other Income and Deductions
    Interest Expense...................    (302)   (412)      --          (714)
    Preferred and Preference Stock
     Dividends.........................      --     (25)     (10)(8)       (35)
    Other, net.........................      75     119      (15)(6)
                                                               3 (8)       182
                                         ------  ------     -----      --------
      Total Other Income and
       Deductions......................    (227)   (318)     (22)         (567)
                                         ------  ------     -----      --------

  Income Before Income Taxes and
   Extraordinary Item..................     878     676        28        1,582
  Income Tax Expense...................     330     167        60 (10)     557
                                         ------  ------     -----      --------
  Income Before Extraordinary Item.....  $  548  $  509     $ (32)     $ 1,025
                                         ======  ======     =====      ========
  Preferred Stock Dividends............  $    7             $  (7)(8)  $    --
                                         ======             =====      ========

  Income Before Extraordinary Item per
   Share...............................          $ 2.82                $ 3.22
                                                 ======                ======

  Income Before Extraordinary Item per
   Share--Diluted......................          $ 2.80                $ 3.20
                                                 ======                ======
  Average Basic Shares Outstanding.....           180.7                 318.5 (5)
                                                 ======                ======
  Average Diluted Shares Outstanding...           181.9                 320.6
                                                 ======                ======

</TABLE>





                 See accompanying Notes to Unaudited Pro Forma
                    Combined Condensed Financial Statements

<PAGE>


                Unaudited Pro Forma Condensed Statement of Income

                        (Millions Except Per Share Data)

                      For the Year Ended December 31, 1999




                                                      PECO Energy   PECO Energy
                                                     Securitization  Prior to
                                         PECO Energy   Pro Forma      Merger
                                          As Filed   Adjustments(1) Pro Forma
                                         ----------- -------------- -----------

  Operating Revenues...................    $5,437         $--         $5,437
                                           ------         ----        ------
  Operating Expenses
    Fuel and Energy Interchange........     2,145          --          2,145
    Operation and Maintenance..........     1,384          --          1,384
    Depreciation and Amortization......       237          --            237
    Taxes Other Than Income Taxes......       262          --            262
                                           ------         ----        ------
      Total Operating Expenses.........     4,028          --          4,028
                                           ------         ----        ------
  Operating Income.....................     1,409          --          1,409
                                           ------         ----        ------
  Other Income and Deductions
    Interest Expense...................      (396)         (50)         (446)
    Other, net.........................       (36)          12           (24)
                                           ------         ----        ------
      Total Other Income and
       Deductions......................      (432)         (38)         (470)
                                           ------         ----        ------
  Income Before Income Taxes and
   Extraordinary Item..................       977          (38)          939
  Income Tax Expense...................       358          (15)          343
                                           ------         ----        ------
  Income Before Extraordinary Item.....    $  619         $(23)       $  596
                                           ======         ====        ======
  Preferred Stock Dividends............    $   12         $ (1)       $   11
                                           ======         ====        ======
  Income Before Extraordinary Item per
   Share...............................    $ 3.10
                                           ======
  Income Before Extraordinary Item per
   Share--Diluted......................    $ 3.08
                                           ======
  Average Basic Shares Outstanding.....     196.3
                                           ======
  Average Diluted Shares Outstanding...     197.6
                                           ======












                 See accompanying Notes to Unaudited Pro Forma
                    Combined Condensed Financial Statements


<PAGE>

                Unaudited Pro Forma Condensed Statement of Income

                        (Millions Except Per Share Data)

                      For the Year Ended December 31, 1999




                                            Unicom         Unicom      Unicom
                                         Fossil Sale   Securitization Prior to
                                Unicom    Pro Forma       Pro Forma    Merger
                               As Filed Adjustments(2) Adjustments(3) Pro Forma
                               -------- -------------  -------------- ---------

  Operating Revenues            $6,848      $ --           $ --        $6,848
                                ------      -----          -----       ------
  Operating Expenses
    Fuel and Energy
     Interchange.............    1,549        257            --         1,806
    Operation and
     Maintenance.............    2,428       (271)           --         2,157
    Depreciation and
     Amortization............      843         26            113          982
    Taxes Other Than Income
     Taxes...................      508        (16)           --           492
                                ------      -----          -----       ------
      Total Operating
       Expenses..............    5,328         (4)           113        5,437
                                ------      -----          -----       ------
  Operating Income...........    1,520          4           (113)       1,411
                                ------      -----          -----       ------
  Other Income and Deductions
    Interest Expense.........     (564)       --              20         (544)
    Preferred and Preference
     Stock Dividends.........      (53)       --              10          (43)
    Other, net...............        1        --             --             1
                                ------      -----          -----       ------
      Total Other Income and
       Deductions............     (616)       --              30         (586)
                                ------      -----          -----       ------
  Income Before Income Taxes
   and Extraordinary Item....      904          4            (83)         825
  Income Tax Expense.........      307          4            (37)         274
                                ------      -----          -----       ------
  Income Before Extraordinary
   Item......................   $  597      $ --           $ (46)      $  551
                                ======      =====          =====       ======
  Income Before Extraordinary
   Item per Share............   $ 2.75
                                ======
  Income Before Extraordinary
   Item per Share--Diluted...   $ 2.74
                                ======
  Average Basic Shares
   Outstanding...............    217.3
                                ======
  Average Diluted Shares
   Outstanding...............    218.1
                                ======



                  See accompanying Notes to Unaudited Pro Forma
                    Combined Condensed Financial Statements



<PAGE>

           Unaudited Pro Forma Combined Condensed Statement of Income

                        (Millions Except Per Share Data)

                      For the Year Ended December 31, 1999




                                PECO Energy  Unicom
                                 Prior to   Prior to    Merger
                                  Merger     Merger    Pro Forma    Exelon
                                 Pro Forma  Pro Forma Adjustments  Pro Forma
                                ----------- --------- -----------  ---------

  Operating Revenues..........    $5,437     $6,848      $(60)(7)   $12,225
                                  ------     ------      ----       -------
  Operating Expenses
    Fuel and Energy
     Interchange..............     2,145      1,806       (60)(7)     3,891
    Operation and
     Maintenance..............     1,384      2,157        36 (6)     3,577
    Depreciation and
     Amortization.............       237        982      (427)(6)       792
    Goodwill Amortization.....       --         --        115 (6)       115
    Taxes Other Than Income
     Taxes....................       262        492       --            754
                                  ------     ------      ----       -------
      Total Operating
       Expenses...............     4,028      5,437      (336)        9,129
                                  ------     ------      ----       -------
  Operating Income............     1,409      1,411       276         3,096
                                  ------     ------      ----       -------
  Other Income and Deductions
    Interest Expense..........      (446)      (544)                   (990)
    Preferred and Preference
     Stock Dividends..........       --         (43)      (20)(8)       (63)
    Other, net................       (24)         1       (20)(6)
                                                            9 (8)       (34)
                                  ------     ------      ----       -------
      Total Other Income and
       Deductions.............      (470)      (586)      (31)       (1,087)
                                  ------     ------      ----       -------
  Income Before Income Taxes
   and Extraordinary Item.....       939        825       245         2,009
  Income Tax Expense..........       343        274       163(10)       780
                                  ------     ------      ----       -------
  Income Before Extraordinary
   Item.......................    $  596     $  551      $ 82      $  1,229
                                  ======     ======      ====       =======
  Preferred Stock Dividends...    $   11     $  --       $(11)(8)   $   --
                                  ======     ======      ====       =======
  Income Before Extraordinary
   Item per Share.............                                      $  3.86
                                                                    =======
  Income Before Extraordinary
   Item per Share--Diluted....                                      $  3.83
                                                                    =======
  Average Basic Shares
   Outstanding................                                        318.5 (5)
                                                                    =======
  Average Diluted Shares
   Outstanding................                                        320.6
                                                                    =======


                 See accompanying Notes to Unaudited Pro Forma
                    Combined Condensed Financial Statements



<PAGE>

              Unaudited Pro Forma Combined Condensed Balance Sheet

                                  (In millions)

                            As of September 30, 2000




                                  PECO Energy  Unicom    Merger         Exelon
                                       As        As      Pro Forma     Pro Forma
                                     Filed     Filed   Adjustments      Balance
                                  ----------- ------- -----------     ---------

              ASSETS

  Utility Plant, net ...........    $ 5,196   $12,436  $ (4,817)(6)    $12,815

  Current Assets
    Cash and Temporary Cash
     Investments................        169     1,056       (40)(9)      1,185
    Accounts Receivable, net....        776     1,445       --           2,221
    Inventories, at average
     cost.......................        232       258       --             490
    Other Current Assets........        180     2,189        84(6)       2,453
                                    -------   -------  --------        -------
                                      1,357     4,948        44          6,349
                                    -------   -------  --------        -------
  Deferred Debits and Other
   Assets
    Regulatory Assets...........      6,016     1,527       --           7,543
    Goodwill....................        192        78     4,586 (6)      4,856
    Investments and Other
     Property, net..............        722     3,524       --           4,246
    Other.......................        184        70        38 (6)        292
                                    -------   -------  --------        -------
                                      7,114     5,199     4,624         16,937
                                    -------   -------  --------        -------
      Total.....................    $13,667   $22,583  $   (149)       $36,101
                                    =======   =======  ========        =======

 CAPITALIZATION AND LIABILITIES
  Capitalization
    Common Stock Equity.........    $ 1,727   $ 3,701  $   (510)(4)
                                                         (2,300)(6)
                                                          4,586 (6)
                                                            (40)(9)    $ 7,164
    Preferred and Preference
     Stock......................        174        --        --            174
    Company Obligated
     Mandatorily
     Redeemable Preferred
     Securities.................        128       350      (21)(6)         457
    Long-Term Debt..............      6,252     7,134      (70)(6)
                                                           510 (4)      13,826
                                    -------   -------  --------        -------
                                      8,281    11,185     2,155         21,621
                                    -------   -------  --------        -------
  Current Liabilities
    Notes Payable, Bank.........        284     1,478       --           1,762
    Accounts Payable............        308       929       --           1,237
    Other Current Liabilities...        938       979       --           1,917
                                    -------   -------  --------        -------
                                      1,530     3,386       --           4,916
                                    -------   -------  --------        -------


<PAGE>


 Deferred Credits and Other
   Liabilities
    Deferred Income Taxes.......      2,444     3,452    (1,533)(6)     4,363
    Unamortized Investment Tax
     Credits....................        275       462      (402)(6)       335
    Nuclear Decommissioning
     Liability For Retired
     Plants.....................        --      1,288       --           1,288
    Other.......................      1,137     2,810      (369)(6)      3,578
                                    -------   -------  --------        -------
                                      3,856     8,012    (2,304)         9,564
                                    -------   -------  --------        -------
      Total.....................    $13,667   $22,583  $   (149)       $36,101
                                    =======   =======  ========        =======






                 See accompanying Notes to Unaudited Pro Forma
                    Combined Condensed Financial Statements

<PAGE>

      Notes to Unaudited Pro Forma Combined Condensed Financial Statements

1.        PECO Energy used a portion of the proceeds from the  securitization of
          its stranded costs to repurchase  common stock in order to achieve the
          number of shares  outstanding  that were  contemplated  in the  merger
          agreement.  All share  repurchases  are  reflected  in the  historical
          balance  sheet  presented  herein.  The effects of the use of proceeds
          from the  securitization  of stranded  costs by PECO Energy on the pro
          forma  combined  condensed  statements  of income  were as follows (in
          million):



                                            Year Ended      Nine Months Ended
                                          December 31, 1999 September 30, 2000
                                          ----------------- ------------------

      Transition Bond Interest Expense...       $318               $240
      Interest Savings Associated with
       Higher Cost Debt that was
       Repurchased.......................       (159)              (120)
      Transition Bond Interest Expense
       Included In Historical Interest
       Expense...........................       (192)              (216)
      Interest Savings Included in
       Historical Interest Expense.......         83                 65
                                                ----               ----
                                                $ 50               $(31)
                                                ====               ====
      PECO Energy Obligated Mandatorily
       Redeemable Preferred Securities
       ($221 million @ 9%)...............       $(20)              $(15)
      Interest Savings Included in
       Historical Financial Statements...          8                 11
                                                ----               ----
                                                $(12)              $ (4)
                                                ====               ====
      PECO Preferred Stock Dividends
       ($37 million @ 6.12%).............       $ (2)              $ (2)
      PECO Preferred Stock Dividend
       Savings Included in Historical
       Financial Statements..............          1                  1
                                                ----               ----
                                                $ (1)              $ (1)
                                                ====               ====

2.    The Unicom fossil sale Pro Forma  Adjustments  for the combined  condensed
      statement  of income for the Year Ended  December  31,  1999  reflect  the
      continuing  impact of the sale of ComEd's fossil  generating  plants which
      was completed in December 1999.

      . Fuel and Energy  Interchange:  Reflects the  elimination  of fossil fuel
        expense and the replacement  impact of purchasing  power under the power
        purchase agreements entered into with the purchaser of the fossil assets
        at the time of the fossil sale, as provided below (in millions):


                  Fossil Fuel Expense.......................... $(616)
                  Energy Interchange Expense...................   873
                                                                -----
                  Total........................................ $ 257
                                                                =====


      . Operation  and  Maintenance:  Reflects  the  elimination  of the  fossil
        generating plants operation and maintenance expenses.


<PAGE>

      . Depreciation and Amortization: Reflects the following (in millions):




                  Elimination of Fossil Plant Depreciation............ $ (73)
                  Additional Amortization of Regulatory Assets........    99
                                                                       -----
                    Total............................................. $  26
                                                                       =====

      The Unicom pro forma  adjustments  reflecting  the sale of ComEd's  fossil
      generating plants include increased  regulatory asset amortization because
      those  adjustments on a  prior-to-merger,  pro forma basis would result in
      ComEd's  earnings  exceeding  the earnings  cap  provision of the Illinois
      Public Utilities Act.

      . Taxes Other Than Income Taxes: Reflects the elimination of real estate
        and payroll taxes related to the ownership of the fossil plants.

      The pro  forma  adjustments  do not  reflect  the  income  effects  of the
      reinvestment of cash proceeds received from the fossil sale.

3.  Reflects  Unicom's  purchase,  at prevailing market prices, of approximately
    26.3  million  shares of Unicom  common  stock that were  subject to certain
    forward purchase contracts at December 31, 1999. During 1999, Unicom entered
    into forward  purchase  arrangements  with  financial  institutions  for the
    repurchase of approximately  26.3 million shares of Unicom common stock. The
    repurchase  arrangements  were settled in January  2000 on a physical  (i.e.
    shares) basis.  Effective  January 2000, the share  repurchases have reduced
    outstanding  shares and common stock equity.  Prior to the  settlement,  the
    repurchase  arrangements  were recorded as a receivable on the  Consolidated
    Balance  Sheet of Unicom based on the  aggregate  market value of the shares
    deliverable under the arrangements.

    In addition,  reflects adjustments to net interest expense and preferred and
    preference stock dividends related to the use of securitization  proceeds as
    follows (in millions):



      Pro forma adjustment to eliminate  historical  interest expense associated
       with higher cost debt that was repurchased....................... $(20)
      Pro forma adjustment to eliminate historical
       dividend provisions associated with higher cost
       preferred and preference stock that was repurchased.............. $(10)


    The Unicom Securitization pro forma adjustments include increased regulatory
    asset   amortization  of  $113  million  because  those   adjustments  on  a
    prior-to-merger,  pro forma basis would result in ComEd's earnings exceeding
    the earnings cap provision of the Illinois Public Utilities Act.

4.  Reflects the payment of the cash portion of the merger consideration to
    Unicom common shareholders.



<PAGE>

5.  Reflects  issuance of Exelon  shares in exchange  for PECO Energy and Unicom
    common stock net of shares which were  repurchased by PECO Energy and Unicom
    as follows:



                                                   PECO             Pro Forma
                                                  Energy    Unicom    Exelon
                                                  -------  -------  ---------
                                                        (Shares in 000's)

      Actual shares outstanding at September 30,
       2000.....................................  170,523  169,367
      Shares repurchased-Note (9)...............      --      (730)
      Shares issued pursuant to stock
        option exercises .......................      --       463
                                                  -------  -------
      Remaining shares to be exchanged..........  170,523  169,100
      Exchange factor...........................      1.0     .875
                                                  -------  -------
      Remaining shares to be exchanged..........  170,523  147,963   318,486
                                                  =======  =======   =======



6.    Reflects the  recognition  of goodwill equal to the excess of the purchase
      price including estimated  transaction costs and stock-based  compensation
      costs  resulting  from the merger over the estimated net fair value of the
      assets acquired and liabilities  assumed of Unicom. The adjustment assumes
      total purchase  consideration equal to cash of approximately $510 million,
      approximately  148  million  shares of Exelon  Common  Stock at a price of
      $35.89  based on the average  closing  price of PECO Energy  Common  Stock
      between  January  3 and 12,  2000 and  stock-based  compensation  cost for
      certain Unicom employees. PECO Energy's transaction costs of approximately
      $33 million  represent the  estimated  costs to be incurred for the merger
      that meet the requirements  for inclusion in the purchase price.  Goodwill
      for the balance  sheet  presented  is based on the  following  calculation
      (dollars in millions, except per share data):


      Cash Consideration (Note 4)....................       $510
      Common Share Consideration:
         Unicom shares converted.....................    169,100
         Conversion rate.............................       .875
                                                      ----------
         Exelon Shares Issued........................    147,963
         Exchange price..............................   $  35.89
                                                      ----------
            Total Common Share Consideration......................    5,310
      Transaction Costs...........................................       33
      Stock-based Compensation Costs for Certain Unicom Employees        94
                                                                     ------
        Purchase Price..............................................  5,947
        Less: Book value of Unicom's Pro Forma net assets
        as of September 30, 2000....................................  3,661
                                                                     ------
        Subtotal....................................................  2,286
        Increase (decrease) to goodwill for estimated fair value
        adjustments to the following assets acquired and liabilities
        assumed:
                  Utility Plant                                $ 4,817
                  Deferred Income Taxes                         (1,533)
                  Unamortized Investment Tax Credits              (402)
                  Deferred Credits                                (369)
                  Long-Term Debt (including COMPRS)                (91)
                  Other                                           (122)
                                                             ----------

        Net Fair Value adjustment...................................  2,300
                                                                     ------
        Goodwill.................................................... $4,586
                                                                     ======


<PAGE>



         Utility Plant:  Primarily reflects the estimated fair value analyses of
         ComEd's nuclear stations based on discounted cash flows and independent
         appraisals. The $4.8 billion reduction to utility plant is estimated to
         reduce  nuclear  depreciation  expense by  approximately  $215  million
         annually.

         Deferred Income Taxes: Represents the tax effect of purchase accounting
         adjustments described above, except for goodwill.

         Unamortized  Investment  Tax  Credits:  Represents  the  adjustment  of
         ComEd's  nuclear  plant  investment  tax  credits to fair  value.  This
         adjustment is estimated to reduce the  amortization  of the  investment
         tax credits by approximately $26 million annually.

         Deferred Credits:  Primarily  reflects  elimination of unrecognized net
         actuarial gains, prior service costs and transition obligations related
         to pension  benefits and  post-retirement  obligations at September 30,
         2000.  Final  allocation  amounts may differ  primarily  as a result of
         discount  rates at the time of closing and the final  determination  of
         severed  employees.  The adjustments are estimated to increase  pension
         benefits  and  post-retirement  benefit  expense by  approximately  $16
         million, annually.

         Long-Term  Debt:  Represents the adjustment of long-term debt including
         transitional trust notes and Company Obligated  Mandatorily  Redeemable
         Preferred  Securities  to fair value at September  30, 2000.  The final
         fair value  determination  will be based on prevailing  market interest
         rates at the time of closing.  The  adjustment is estimated to increase
         expense by approximately of $20 million in the first year, declining in
         subsequent years.

         Other:  Represents   miscellaneous  estimated  fair  value  adjustments
         including  stock-based  compensation costs for certain Unicom employees
         not  included in the  purchase  price and  emission  allowances.  These
         adjustments   are   estimated   to  increase   operating   expenses  by
         approximately $20 million in each of the first two years.

         Goodwill:  Represents  additional goodwill resulting from the estimated
         adjustments reflected above, to be amortized over 40 years.

         The Merger Pro Forma Adjustments for the combined  condensed  statement
         of income  for the year ended  December  31,  1999,  as a result of the
         increased  merger pro forma  common  stock  equity  balance,  include a
         reversal of the increased  regulatory asset amortization related to the
         Unicom pro forma adjustments discussed in Notes 2 and 3, of $99 million
         and $113 million, respectively.


7.       Reflects  the  elimination  of  purchased  power and  off-system  sales
         transactions between PECO Energy and Unicom.

8.       Reflects the  reclassification of PECO Energy preferred stock dividends
         and interest on PECO Energy obligated mandatorily  redeemable preferred
         securities for consistent presentation.

9.       Reflects  the  repurchase  of  approximately  $40  million of  Unicom's
         outstanding common shares prior to closing. Through September 30, 2000,
         Unicom  repurchased  approximately  $960  million  of the $1.0  billion
         common share repurchase required by the merger agreement.

10.      Reflects  investment  tax  credit  amortization  and the tax  effect of
         purchase  accounting  adjustments  described above, except for goodwill
         amortization and preferred stock dividends.



<PAGE>


                                 EXHIBIT INDEX

                The following exhibits are filed herewith:

      EXHIBIT NO.                 DESCRIPTION
          99.1      Press Release  issued by Exelon  Corporation  on October 20,
                    2000.   (Incorporated   herein   by   reference   to  Exelon
                    Corporation Form 8-K filed October 20, 2000.)

          99.2      Term Loan  Agreement  dated as of  October  13,  2000  among
                    Exelon,  the banks listed on the  signature  pages  thereof,
                    Bank One, N.A., as Administrative Agent, Credit Suisse First
                    Boston,  as  Documentation  Agent,  and  Citibank,  N.A., as
                    Syndication  Agent.  (Incorporated  herein by  reference  to
                    Exelon Corporation Form 8-K filed October 20, 2000.)




<PAGE>


                                   Signatures

         Pursuant to  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.




                              EXELON CORPORATION

                               /s/ Ruth Ann M. Gillis
                               --------------------------------
                                    RUTH ANN M. GILLIS
                                    Senior Vice President and
                                    Chief Financial Officer
                                    (Chief Accounting Officer)

Date:  November 15, 2000







© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission