COMMONWEALTH EDISON CO
DEF 14C, 1998-04-08
ELECTRIC SERVICES
Previous: COHERENT INC, SC 13G/A, 1998-04-08
Next: COMPUTER TASK GROUP INC, 4, 1998-04-08



<PAGE>
 
                           SCHEDULE 14C INFORMATION

               Information Statement Pursuant to Section 14(c) 
           of the Securities Exchange Act of 1934 (Amendment No.  )
 
Check the appropriate box:
         
[_]  Preliminary Information Statement     

[_]  Confidential, for Use of the 
     Commission Only (as permitted by
     Rule 14C-5(d)(2))
   
[X]  Definitive Information Statement

                          COMMONWEALTH EDISON COMPANY
- --------------------------------------------------------------------------------
               (Name of Registrant As Specified In Its Charter)


Payment of Filing Fee (Check the appropriate box):

[X]  No fee required.
   
[_]  Fee computed on table below per Exchange Act Rules 14c-5(g) and 0-11.
    
   
     (1) Title of each class of securities to which transaction applies: 
   
     --------------------------------------------------------------------------
   
   
     (2) Aggregate number of securities to which transaction applies:
   
     --------------------------------------------------------------------------
   
   
     (3) Per unit price or other underlying value of transaction computed
         pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
         the filing fee is calculated and state how it was determined):
   
     --------------------------------------------------------------------------
   
   
     (4) Proposed maximum aggregate value of transaction:
   
     --------------------------------------------------------------------------
   
   
     (5) Total fee paid:
   
     --------------------------------------------------------------------------
   
   
[_]  Fee paid previously with preliminary materials.
   
[_]  Check box if any part of the fee is offset as provided by Exchange
     Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee
     was paid previously. Identify the previous filing by registration statement
     number, or the Form or Schedule and the date of its filing.
    
     (1) Amount Previously Paid:
   
     --------------------------------------------------------------------------
   
    
     (2) Form, Schedule or Registration Statement No.:
   
     --------------------------------------------------------------------------
   
   
     (3) Filing Party:
     
     --------------------------------------------------------------------------
   
   
     (4) Date Filed:
   
     --------------------------------------------------------------------------

<PAGE>
 
                                                      COMMONWEALTH EDISON
                                                      COMPANY
                                                      One First National Plaza
                                                      P.O. Box 767
                                                      Chicago, Illinois 60690-
                                                      0767
 
[LOGO OF COMED]
 
                   NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
 
        TO BE HELD ON THURSDAY, MAY 28, 1998 AT 10:30 A.M. (LOCAL TIME)
 
  The annual meeting of shareholders of Commonwealth Edison Company ("ComEd"
or the "Company") will be held in the Wallingford Center of the Clock Tower
Resort & Conference Center, 7801 E. State Street, Rockford, Illinois. At the
meeting, shareholders will be asked to consider and act upon the following
matters, and to transact such other business as may properly be brought before
the meeting:
 
  Item A: The election of eight Directors.
 
  Item B: The authorization of additional shares for the Unicom Corporation
          Long-Term Incentive Plan.
 
  Item C: The authorization of additional shares for the Unicom Corporation
          Employee Stock Purchase Plan.
 
  Item D: The appointment of Arthur Andersen LLP, independent public
          accountants, as Auditors for 1998.
 
  Only shareholders of record on the books of ComEd at 4:00 P.M., Chicago
time, on March 31, 1998, will be entitled to vote at the meeting.
 
                                       David A. Scholz
                                       Secretary
 
April 9, 1998
<PAGE>
 
 
                         DIRECTIONS TO THE CLOCK TOWER
                          RESORT & CONFERENCE CENTER
 
FROM CHICAGO AREA:
 
I-90 (Kennedy Expressway--Northwest Tollway) West to Rockford, exit at
Business Route U.S. 20. Straight across Business Route U.S. 20 to Clock Tower
Resort & Conference Center.
 
                      [MAP TO LOCATION OF ANNUAL MEETING]
<PAGE>
 
[ComEd LOGO]
 
                             INFORMATION STATEMENT
 
                     WE ARE NOT ASKING YOU FOR A PROXY AND
                   YOU ARE REQUESTED NOT TO SEND US A PROXY.
 
                                                                  April 9, 1998
 
  This Information Statement is being sent to you in connection with the
annual meeting of shareholders of ComEd to be held on May 28, 1998.
 
  A ticket is not required for attendance at the annual meeting; however,
confirmation of stock ownership will be made prior to admission to the
meeting.
 
  As of March 31, 1998, ComEd had outstanding 214,232,430 shares of Common
Stock, par value $12.50 per share (of which Unicom Corporation ("Unicom")
beneficially owned 214,226,742 shares), 61,724 shares of $1.425 Convertible
Preferred Stock, without par value, and 15,558,109 shares of Cumulative
Preference Stock, without par value. UNICOM INTENDS TO VOTE ITS SHARES OF
COMED COMMON STOCK FOR THE ELECTION OF THE NOMINEES NAMED IN ITEM A AND FOR
THE MATTERS DISCUSSED IN ITEMS B, C AND D. CONSEQUENTLY, SUCH MATTERS ARE
EXPECTED TO BE APPROVED.
 
  Unicom's 1997 Summary Annual Report and this Information Statement are first
being mailed to shareholders on or about April 9, 1998. The audited financial
statements of ComEd, along with certain other financial information, are
included in Exhibit C to this Information Statement.
<PAGE>
 
                         ITEM A: ELECTION OF DIRECTORS
 
NOMINEES
 
  James J. O'Connor has resigned as Chairman and Chief Executive Officer of
the Company after thirty-four years of service, the last eighteen of which
have been as Chairman. He has also resigned as a Director. Samuel K. Skinner
has retired from the Company after five years as President and has resigned as
a Director. Their contributions to the Company have been many and are
gratefully appreciated. The Board has decided that it is not necessary at this
time to fill the vacancy on the Board caused by Mr. Skinner's retirement,
which will reduce the size of the Board to eight, the size of the Board having
been reduced to nine upon the resignation of Leo F. Mullin in August 1997.
 
  Eight Directors are to be elected at the annual meeting to serve terms of
one year and until their respective successors have been elected. The nominees
for Director, all of whom are now serving as Directors of ComEd and Unicom,
are listed below together with certain biographical information. Except as
otherwise indicated, each nominee for Director has been engaged in his or her
present principal occupation for at least the past five years.
 
[PHOTO]         EDWARD A. BRENNAN, age 64. Director since 1995. Retired.
                Chairman and CEO of Sears, Roebuck and Co. (retail
                merchandiser) for more than five years prior to his retirement
                in August 1995. Chairman of Corporate Governance and
                Compensation and Nuclear Oversight Committees. Member of
                Audit, Finance, Nominating and Regulatory and Environmental
                Affairs Committees. Other directorships: The Allstate
                Corporation, AMR Corporation, Dean Foods Company, Minnesota
                Mining and Manufacturing Company, Morgan Stanley, Dean Witter,
                Discover & Co., The SABRE Group Holdings, Inc. and Unicom
                Corporation.
 
[PHOTO]         JAMES W. COMPTON, age 60. Director since 1989. President and
                Chief Executive Officer of the Chicago Urban League (a non-
                profit agency). Chairman of Finance Committee and member of
                Corporate Governance and Compensation, Nominating and
                Regulatory and Environmental Affairs Committees. Other
                directorships: Ariel Mutual Funds, Highland Community Bank and
                Unicom Corporation.
 
[PHOTO]         BRUCE DeMARS, age 62. Director since 1996. Vice President and
                Secretary of DeMars, Inc. (consulting firm) since May 1997.
                Admiral, United States Navy and Director, Naval Nuclear
                Propulsion Program for more than five years prior to his
                retirement in October 1996. Member of Audit, Corporate
                Governance and Compensation, Nuclear Oversight and Regulatory
                and Environmental Affairs Committees. Other directorships:
                McDermott International and Unicom Corporation.
 
[PHOTO]         SUE L. GIN, age 56. Director since 1993. Founder, Owner,
                Chairman and Chief Executive Officer of Flying Food Fare, Inc.
                (in-flight catering company). Member of Audit, Corporate
                Governance and Compensation, Executive and Finance Committees.
                Other directorship: Unicom Corporation.
 
                                       2
<PAGE>
 
[PHOTO]         DONALD P. JACOBS, age 70. Director since 1979. Dean of the J.
                L. Kellogg Graduate School of Management, Northwestern
                University. Chairman of Regulatory and Environmental Affairs
                Committee and member of Corporate Governance and Compensation,
                Executive, Finance, Nominating and Nuclear Oversight
                Committees. Other directorships: The First National Bank of
                Chicago, Hartmarx Corp., Security Capital Industrial Trust,
                Unicom Corporation, Unocal Corp. and Whitman Corp.
 
[PHOTO]         EDGAR D. JANNOTTA, age 66. Director since 1994. Senior
                Director of William Blair & Company, L.L.C. (investment
                banking and brokerage company) since January 1996. For more
                than five years prior thereto, Managing Partner of William
                Blair & Company and Senior Partner during 1995. Chairman of
                Nominating Committee and member of Audit, Corporate Governance
                and Compensation, Executive, Finance and Nuclear Oversight
                Committees. Other directorships: AAR Corp., AON Corporation,
                Bandag, Incorporated, Molex Incorporated, Oil-Dri Corporation
                of America, Safety-Kleen Corp. and Unicom Corporation.
 
[PHOTO]         GEORGE E. JOHNSON, age 70. Director since 1971. Founder and
                retired Chairman, Johnson Products Company, Inc. (personal
                care products company). Chairman of Indecorp, Inc. for more
                than five years prior to his retirement in December 1995.
                Chairman of Audit Committee and member of Corporate Governance
                and Compensation, Nominating and Regulatory and Environmental
                Affairs Committees. Other directorships: Burrell
                Communications Group and Unicom Corporation.
 
[PHOTO]         JOHN W. ROWE, age 52. Director, Chairman, President and Chief
                Executive Officer of ComEd since March 16, 1998. President and
                Chief Executive Officer of New England Electric System from
                February 1989 to March 1998. Other directorships: Bank of
                Boston Corporation, UNUM Corporation and Unicom Corporation.
 

 
 
                                       3
<PAGE>
 
ADDITIONAL INFORMATION CONCERNING BOARD OF DIRECTORS
 
  Compensation of Directors--Directors who are not employees of Unicom, ComEd,
or any of their subsidiaries receive an annual fee of $36,200 payable in
shares of Unicom common stock under the Unicom Corporation 1996 Directors' Fee
Plan. Such Directors also receive a fee of $1,000 for each Board and Committee
meeting they attend and an additional annual fee of $2,500 for each Committee
of the Board that they chair, which meeting and chair fees may, at the
election of the Director, be paid in shares of Unicom common stock under the
1996 Directors' Fee Plan. Any non-employee Director who is also a member of
the Nuclear Operations Committee receives an additional annual fee of $7,500.
In the event that Directors also serve as directors of Unicom, or as chairs of
corresponding committees of Unicom, the aggregate fees paid to such Directors
in respect of such service to Unicom and ComEd do not exceed the foregoing
amounts, so that Directors do not receive duplicate fees. Directors who are
full-time employees of Unicom, ComEd, or any of their subsidiaries receive no
fees for service on the Board of Directors. Directors may defer the cash
portion of their fees. Prior to 1997, Directors who had never been an officer
or an employee of Unicom, ComEd, or any of their subsidiaries, and who had
attained at least age 65 and completed the required period of Board service (3
to 5 years as applicable, including service as a director of Unicom), became
eligible for retirement benefits upon retirement. Such benefits were to be
paid to the retired Director or a surviving spouse for a period equal to such
Director's years of service (including service as a director of Unicom) in an
amount per year equal to the annual retainer for Board members as in effect at
the time of payment. Effective January 1, 1997, the Board of Directors
terminated the further accrual of retirement benefits and offered each
Director the option to irrevocably elect, in lieu of amounts otherwise
payable, a lump sum amount payable upon retirement, either by delivery of
shares of Unicom common stock or in cash. In lieu of further accrual of
retirement benefits, non-employee Directors received a $6,200 increase in
their annual fee (from $30,000 to $36,200), effective June 1, 1997 and payable
in shares of Unicom common stock.
 
  In addition to his compensation as a Director, Admiral DeMars also received
from ComEd a total of $120,000 for consulting services provided to ComEd
during 1997 with respect to its nuclear power operations. The fees were based
on the amount of time spent in performing the consulting services. It is not
expected that Admiral DeMars will perform any consulting services for Unicom
or the Company during 1998.
 
  Audit Committee--The Audit Committee consists of five Directors who are not
employees of Unicom, ComEd, or any of their subsidiaries. Members serve three-
year staggered terms. It is the responsibility of the Audit Committee to
review, with ComEd's independent Auditors, ComEd's financial statements and
the scope and results of such Auditors' examinations, to monitor the internal
accounting controls and practices of ComEd, to review the financial statements
set forth in Exhibit C and to recommend the appointment, subject to
shareholder approval, of independent Auditors. The Committee met three times
during 1997. Members of the Committee are George E. Johnson (Chairman), Edward
A. Brennan, Bruce DeMars, Sue L. Gin and Edgar D. Jannotta.
 
  Corporate Governance and Compensation Committee--The Corporate Governance
and Compensation Committee consists of all Directors who are not and have
never been employees of Unicom, ComEd, or any of their subsidiaries. Members
serve one-year terms. The Committee reviews management and executive
compensation programs and corporate governance matters and administers awards
under the Deferred Compensation Plan. The Committee met six times during 1997.
Members of the Committee are Edward A. Brennan (Chairman), James W. Compton,
Bruce DeMars, Sue L. Gin, Donald P. Jacobs, Edgar D. Jannotta and George E.
Johnson.
 
  Executive Committee--The Executive Committee consists of three Directors.
Members serve one-year terms. The remaining Directors constitute alternates to
serve temporarily, in rotation, in place of any member unable to serve. The
Committee has and may exercise all the authority of the Board of Directors
when the Board is not in session, subject to limitations set forth in the By-
Laws. The
 
                                       4
<PAGE>
 
Committee met two times during 1997. Members of the Committee are Sue L. Gin,
Donald P. Jacobs and Edgar D. Jannotta.
 
  Finance Committee--The Finance Committee consists of five Directors. Members
serve one-year terms. The Committee reviews the scope and results of ComEd's
and its subsidiaries' financing program. The Committee met two times during
1997. Members of the Committee are James W. Compton (Chairman), Edward A.
Brennan, Sue L. Gin, Donald P. Jacobs and Edgar D. Jannotta.
 
  Nominating Committee--The Nominating Committee consists of five Directors
who are not employees of Unicom, ComEd, or any of their subsidiaries. Members
serve one-year terms. The Committee reviews the qualifications of potential
candidates and proposes nominees for Director to the Board. The Committee will
consider nominees recommended by shareholders if such recommendations are
submitted in writing, accompanied by a description of the proposed nominee's
qualifications and other relevant biographical information and evidence of the
consent of the proposed nominee. The recommendations should be addressed to
the Nominating Committee, in care of the Secretary of ComEd. Nominations also
may be presented by shareholders at the annual meeting of shareholders. The
Committee met three times during 1997. Members of the Committee are Edgar D.
Jannotta (Chairman), Edward A. Brennan, James W. Compton, Donald P. Jacobs and
George E. Johnson.
 
  Nuclear Oversight Committee--The Nuclear Oversight Committee consists of
four Directors. The Committee was established by action of the Board of
Directors on March 11, 1998. Members serve one-year terms. The purpose of the
Committee is to advise and assist the Board by monitoring the performance and
safety of ComEd's nuclear facilities. Members of the Committee are Edward A.
Brennan (Chairman), Bruce DeMars, Donald P. Jacobs and Edgar D. Jannotta. The
Committee is the successor to the Nuclear Operations Committee. The Nuclear
Operations Committee met six times during 1997. In September 1997, the Board
established the Special Committee on Nuclear Governance to advise it on a new
governance model for nuclear operations and the selection of a Chief Nuclear
Officer. The Special Committee met three times during 1997 and was dissolved
by action of the Board of Directors on March 11, 1998.
 
  Regulatory and Environmental Affairs Committee--The Regulatory and
Environmental Affairs Committee consists of five Directors. Members serve one-
year terms. The Committee reviews ComEd's relationships with economic and
environmental regulatory agencies and reviews matters involving ComEd before
such agencies. The Committee met two times during 1997. Members of the
Committee are Donald P. Jacobs (Chairman), Edward A. Brennan, James W.
Compton, Bruce DeMars and George E. Johnson.
 
  Attendance at Meetings--During 1997, there were twelve meetings of the Board
of Directors. The average attendance of all incumbent Directors, expressed as
a percent of the aggregate total of Board and Board Committee meetings in
1997, was 96%. Each incumbent Director attended at least 88% of the meetings
of the Board and Board Committees of which the Director was a member.
 
                                       5
<PAGE>
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
  As of March 1, 1998, Unicom beneficially owned 214,226,688 shares of ComEd
Common Stock, representing more than 99.99% of the total ComEd Common Stock
outstanding, and there was no other person known to ComEd to be the beneficial
owner of more than five percent of any class of ComEd voting securities. The
following table lists the beneficial ownership, as defined under the rules of
the Securities and Exchange Commission (the "SEC"), as of March 1, 1998 (with
the exception of John W. Rowe), of Unicom Common Stock held by each of the
Directors, each of the executive officers named in the Summary Compensation
Table on page 13 and Unicom's Directors and executive officers as a group. Mr.
Rowe's ownership is listed as of March 31, 1998. In addition, the table
includes two columns describing securities held by such persons that are not
considered to be "beneficially owned" under the rules of the SEC. The column
headed "Other Stock Options" includes stock options held by such persons that
are not exercisable within 60 days of March 1, 1998. The column headed
"Deferred Share Equivalents" includes shares deferred by such persons under the
Unicom Corporation Stock Bonus Deferral Plan or share equivalents held in the
Unicom Corporation Retirement Plan for Directors.
 
<TABLE>
<CAPTION>
                                 BENEFICIAL
                             OWNERSHIP OF COMMON
                                    STOCK
                             ------------------------   OTHER
                               AMOUNT        PERCENT    STOCK      DEFERRED SHARE
            NAME             AND NATURE      OF CLASS OPTIONS(7)   EQUIVALENTS(9)
            ----             ----------      -------- ----------   --------------
<S>                          <C>             <C>      <C>          <C>
Edward A. Brennan...........    3,133            *         --             --
James W. Compton............    3,805            *         --           2,539
Bruce DeMars................    1,561            *         --             469
Sue L. Gin..................    7,798            *         --           1,091
Donald P. Jacobs............    6,502            *         --           8,614
Edgar D. Jannotta...........    4,563            *         --           1,878
George E. Johnson...........    5,695            *         --           9,988
James J. O'Connor...........   56,333(1)(2)      *     123,333         44,040
John W. Rowe................    5,000(3)         *     250,000            --
Samuel K. Skinner...........  150,572(2)         *         --             --
Robert J. Manning...........   24,390(2)(4)      *      45,332(8)      10,486(10)
Michael J. Wallace..........   15,579(2)(5)      *      22,500         13,755
Pamela B. Strobel...........   17,447(2)         *      25,500          8,388
Leo F. Mullin...............    5,346            *         --             --
Directors and executive
 officers as a group (20
 persons)...................  380,178(2)(6)      *     588,330        116,739
</TABLE>
- --------------------
*Less than one percent
(1) Includes 1,775 shares owned by family members. Mr. O'Connor disclaims any
    beneficial ownership of such shares.
(2) The numbers and percentages of shares shown in the table above include
    shares as to which the indicated person(s) had the right to acquire within
    60 days of March 1, 1998 upon the exercise of outstanding stock options, as
    follows: Mr. O'Connor 21,667; Mr. Skinner 110,000; Mr. Manning 7,668
    (includes 1,834 options owned by spouse); Mr. Wallace 5,000; Ms. Strobel
    4,000; and all executive officers and directors as a group (including such
    individuals) 163,920. Such persons disclaim any beneficial ownership of the
    shares subject to such options.
(3) Includes 2,000 shares owned by spouse.
(4) Includes 1,737 shares owned by spouse.
(5) Includes 100 shares jointly owned with a family member, 201 shares owned by
    a family member and 200 shares held in a custodial account for a family
    member. Mr. Wallace disclaims any beneficial ownership of such shares.
(6) Includes 3,737 shares owned by spouses, 200 shares held in a custodial
    account for a family member, 1,976 shares owned by family members and 100
    shares jointly owned with a family member. The directors and executive
    officers to whom such beneficial ownership is attributed disclaim any
    beneficial ownership of the shares held by such persons.
 
                                       6
<PAGE>
 
(7) Includes stock options which are not considered to be "beneficially owned"
    under SEC rules because they cannot be exercised within 60 days of March
    1, 1998.

(8) Includes 8,666 stock options held by spouse.

(9) Includes share equivalents that are not considered to be "beneficially
    owned" under SEC rules because they are deferred under the Unicom
    Corporation Stock Bonus Deferral Plan or the Unicom Corporation Retirement
    Plan for Directors. Under the Unicom Corporation Stock Bonus Deferral
    Plan, executives may defer the receipt of the stock portion of certain
    awards made pursuant to the Unicom Corporation Long-Term Incentive Plan.
    Deferred amounts are only required to be kept in Unicom's books of account
    as deferred stock accounts, which are for bookkeeping purposes only.
    Unicom has no obligation to set aside or segregate any actual shares of
    Unicom common stock or other assets in respect of such accounts. Unicom
    has elected to issue the deferred shares to a trust having an
    institutional trustee, which has sole voting rights with respect to such
    shares. At the end of the deferral period, the share equivalents are
    distributed in whole shares of Unicom common stock and cash in lieu of any
    fractional share. Dividends paid with respect to the deferred shares are
    either reinvested in Unicom common stock and held by such Trustee or are
    paid to the executive officer making the deferral. Under the Unicom
    Corporation Retirement Plan for Directors, effective January 1, 1997, the
    accrual of further benefits was terminated and directors could elect to
    have benefits accrued through such date deferred into share equivalents to
    be paid in shares of Unicom common stock upon retirement. Accounts under
    such Plan are credited with an additional number of share equivalents
    determined by assuming the reinvestment of dividend equivalents on share
    equivalents in such accounts.

(10)Includes 2,312 deferred share equivalents held by spouse.
 
SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
 
  Section 16(a) of the Securities Exchange Act of 1934 requires ComEd's
executive officers and directors and persons who own more than ten percent of
a registered class of ComEd equity securities ("Reporting Person") to file
reports of ownership and changes in ownership with the Securities and Exchange
Commission. Reporting Persons are required by Securities and Exchange
Commission regulations to furnish ComEd with copies of all Section 16(a)
reports they file.
 
  Based solely on its review of the copies of such forms received by it and
written representations from certain Reporting Persons, ComEd believes that
during fiscal 1997, its Reporting Persons complied with all filing
requirements applicable to them.
 
              ITEM B: AUTHORIZATION OF ADDITIONAL SHARES FOR THE
                  UNICOM CORPORATION LONG-TERM INCENTIVE PLAN
 
  The second item to be considered by shareholders at the annual meeting will
be an amendment of the Unicom Corporation Long-Term Incentive Plan (the
"Incentive Plan") to add 7,000,000 shares to the shares previously authorized
to be available for awards under the Incentive Plan. The Incentive Plan was
originally approved by ComEd's shareholders in May 1993. It was re-approved by
ComEd in August 1994, as the then sole shareholder of Unicom, in connection
with its assumption by Unicom. In May 1997 amendments to the Incentive Plan
were approved by Unicom and ComEd shareholders to enable certain future grants
or awards under the Incentive Plan to qualify as "performance-based
compensation" under the Internal Revenue Code. The proposed amendment, if
approved by shareholders, would amend Section 4.1 of the Incentive Plan to
increase the aggregate number of shares available for awards under the
Incentive Plan from 4,000,000 to 11,000,000. The full text of the Incentive
Plan as it is proposed to be amended is attached as Exhibit A to this
Information Statement.
 
                                       7
<PAGE>
 
PURPOSES OF INCENTIVE PLAN AND AMENDMENT
 
  The purposes of the Incentive Plan are (i) to align the interests of the
Company's shareholders and recipients of awards by increasing the proprietary
interest of such recipients in the Company's growth and success and (ii) to
advance the interests of the Company by attracting and retaining well-
qualified persons by providing such persons with performance-related
incentives. Awards under the Incentive Plan are expected to be structured to
achieve these purposes.
 
  The Incentive Plan provides for a variety of awards that can be flexibly
administered in order to carry out its purposes. The Board believes this
authority will continue to permit the Company to keep pace with changing
developments in compensation programs and to make the Company competitive with
other companies that offer creative incentives to attract and keep employees.
The flexibility of the Incentive Plan will continue to allow the Company to
respond to changing circumstances such as changes in tax laws, accounting
rules, securities regulations and other rules regarding benefit plans. The
Incentive Plan grants the administrators flexibility in creating the terms and
restrictions deemed appropriate for particular awards as facts and
circumstances warrant.
 
  As of March 1, 1998, fewer than 884,551 shares remained available for Awards
under the Incentive Plan. See "Available Shares; Outstanding Awards" below.
The purpose of the amendment is to make additional shares available for future
awards under the Incentive Plan.
 
PRINCIPAL TERMS OF INCENTIVE PLAN
 
  Employees of Unicom and its subsidiary companies (in which Unicom owns
directly or indirectly a 51% or more voting equity interest) are eligible to
be selected to participate in the Incentive Plan. The selection of
participants from eligible persons is within the sole discretion of the
Corporate Governance and Compensation Committee of the Unicom Board of
Directors. Approximately 16,800 persons are eligible to participate in the
Incentive Plan.
 
  The Incentive Plan authorizes the Unicom Corporate Governance and
Compensation Committee to make or grant the following types of awards singly,
in combination or in tandem:
 
    Stock Options. Awards may consist of options to purchase shares of Unicom
  common stock, which may be "incentive stock options" or non-qualified stock
  options. Incentive stock options must meet the requirements of Section 422
  of the Internal Revenue Code and carry some potential tax advantages for
  the recipient. Non-qualified stock options are not subject to those
  requirements and do not carry such advantages. The Committee is empowered
  to determine the number of shares subject to each option, the manner and
  time of the option's exercise, and the exercise price per share of stock
  subject to the option. The exercise price of an incentive stock option may
  not be less than the fair market value of a share of Unicom common stock on
  the date the option is granted. The Committee may establish any exercise
  price for non-qualified stock options. The exercise price of an option may,
  at the discretion of the Committee, be paid by a participant in cash,
  shares of Unicom common stock owned by the participant, a combination
  thereof, or such other consideration as the Committee may deem appropriate.
 
    Stock Appreciation Rights. A stock appreciation right ("SAR") is a right
  to receive a payment (either in cash, shares of Unicom common stock, or a
  combination thereof) equal to the appreciation in market value of a stated
  number of shares of Unicom common stock. The appreciation is measured by
  the difference between a reference price stated in the SAR and the market
  value of a share of Unicom common stock on the date of exercise of the SAR.
  A SAR may be granted in tandem with a stock option ("Tandem SARs") or
  independent of a stock option ("Non-tandem SARs"). A Tandem SAR may be
  granted either at the time of the grant of the related stock option or, in
  the case of a non-qualified stock option, at any time thereafter during the
  term of such option. Upon the exercise of a stock option as to some or all
  of the shares covered by the award, the related Tandem SAR is cancelled
  automatically to the extent that the number of shares subject to the Tandem
  SAR exceeds the number of remaining shares subject to the related stock
  option.
 
                                       8
<PAGE>
 
    Stock Awards. Awards may also consist of grants of restricted or
  unrestricted shares of Unicom common stock. Such awards will be subject to
  such terms, conditions, restrictions and/or limitations, if any, as the
  Committee deems appropriate, which may include restrictions on
  transferability and continued employment.
 
    Performance Shares. Performance shares are either shares of Unicom common
  stock or units which are expressed in terms of Unicom common stock. Such
  awards are contingent upon the attainment over a specified time period (as
  determined by the Committee) of certain performance objectives. The
  performance objectives to be achieved during a performance period and the
  measures of whether and to what degree such objectives have been attained
  are also determined by the Committee.
 
    Performance Units. Awards may also be granted in the form of "performance
  units," which are units valued by reference to criteria chosen by the
  Committee other than Unicom common stock. Performance units are similar to
  performance shares in that they are contingently awarded based on the
  attainment over a performance period of certain objectives. The length of
  the performance period, the performance objectives to be achieved and the
  measure of whether and to what degree such objectives have been achieved
  are determined by the Committee. Amounts earned under performance units may
  be paid in cash, shares of Unicom common stock or both.
 
    Other Stock-Based Awards. The Committee is also authorized to grant to
  participants awards of stock and other awards that are valued in whole or
  in part by reference to, or are otherwise based on, Unicom common stock.
 
  Awards may be paid in cash, shares of Unicom common stock, a combination of
cash and shares of Unicom common stock, or any other form of property, as the
Committee determines. If an award is granted in the form of a stock option,
restricted or unrestricted stock award, performance shares, or in the form of
any other stock-based award, the Committee may include as part of such award
an entitlement to receive dividends or dividend equivalents. At the discretion
of the Committee, the payment of performance shares or performance units may
be deferred by a participant. The Incentive Plan limits (i) the maximum
aggregate number of shares of Unicom common stock available for stock option
and stock appreciation rights grants to 500,000 for any given individual in
any five consecutive years and (ii) the maximum aggregate number of
performance units that can be granted to 50,000 for any given individual in
any given year.
 
  Awards are evidenced by written agreements containing the terms, conditions,
restrictions and/or limitations covering the grant of the award.
 
AVAILABLE SHARES; OUTSTANDING AWARDS
 
  The Incentive Plan originally made available an aggregate of 4,000,000
shares of Unicom common stock for the grant of awards. Since then, 855,329
shares have been issued in payment of awards under the Incentive Plan. There
remain 3,144,671 shares available for satisfying currently outstanding awards
(including the 2,260,120 shares reserved for the stock options described in
the next paragraph and payment of awards under currently outstanding annual
incentive awards and longer-term incentive awards, which numbers are not
presently determinable), and issuing future awards. Shares covered by any
stock option, stock appreciation right or other stock award that expires or
terminates unexercised or is cancelled or forfeited become available again for
awards under the Incentive Plan.
 
  As of March 1, 1998, there were 2,260,120 shares covered by outstanding non-
qualified stock options. Each stock option entitles the holder to purchase
shares of Unicom's common stock. The options become exercisable in equal
annual increments on the first three anniversaries of the grant date (subject
to acceleration in the event of a change in control of Unicom), and expire
entirely on
 
                                       9
<PAGE>
 
the tenth anniversary of the grant date to the extent not previously
exercised. Options to purchase an aggregate of 1,205,500 shares were granted
in 1996 to employees, including options to purchase 65,000, 50,000, 50,000,
17,500, 15,000 and 12,000 shares granted to Messrs. O'Connor, Mullin, Skinner,
Manning and Wallace and Ms. Strobel, respectively; and options to purchase
436,500 shares granted to all executive officers as a group. Options to
purchase an aggregate of 1,339,350 shares were granted in 1997 to employees,
including options to purchase 80,000, 60,000, 60,000, 25,000, 12,500 and
17,500 shares granted to Messrs. O'Connor, Mullin, Skinner, Manning and
Wallace and Ms. Strobel, respectively, and 345,500 options to purchase granted
to all executive officers as a group. Non-employee Directors are not eligible
to participate in the Incentive Plan. All such options were granted at the
fair market value of the common stock as of the date of grant, which range
from $22.313 to $28.00. As of March 1, 1998, the market price of Unicom common
stock was $32.063 per share.
 
  Benefits under the Incentive Plan with respect to 1998 and future years are
not determinable.
 
INCENTIVE PLAN ADMINISTRATION
 
  The Incentive Plan is administered by the Corporate Governance and
Compensation Committee (and its Incentive Compensation Subcommittee) of the
Board of Directors of Unicom. No member of the Committee is eligible to
participate in the Incentive Plan. Among the powers granted to the Committee
are the authority to interpret the Incentive Plan, establish rules and
regulations for its operation, select employees of the Company and its
subsidiaries to receive awards, and determine the form, amount and other terms
and conditions of awards. The Committee also has the power to modify or waive
restrictions on awards, to amend awards and to grant extensions and accelerate
awards.
 
AMENDMENT AND TERMINATION
 
  The Unicom Board of Directors may amend the Incentive Plan at any time but
may not, without Unicom shareholder approval, adopt any amendment which would
increase the number of shares of Unicom common stock available for award under
the Incentive Plan or which would cause the Incentive Plan to lose its
exemption under Securities and Exchange Commission Regulation Section 240.16b-
3.
 
  The Incentive Plan has no fixed termination date but may be terminated by
the Unicom Board at any time. Termination of the Incentive Plan will not
affect the status of any awards outstanding at the date of termination.
 
FEDERAL TAX TREATMENT
 
  Under current U.S. federal tax law, the following is a brief summary of the
U.S. federal income tax consequences generally arising with respect to awards
under the Incentive Plan.
 
  A participant who is granted an incentive stock option will not recognize
any taxable income at the time of the grant of the option or at the time of
its exercise. If the participant does not dispose of the shares acquired
pursuant to the exercise of an incentive stock option before the later of two
years from the date of grant and one year from the date of exercise, any gain
or loss realized on a subsequent disposition of the shares will be treated as
a long-term capital gain or loss, and the participant's employer will not be
entitled to any deduction for federal income tax purposes.
 
  A participant who is granted a non-qualified option will not recognize
taxable income at the time of grant, but will recognize taxable income at the
time of exercise equal to the difference between the exercise price of the
shares and the market value of the shares on the date of exercise. The
participant's employer will be entitled to a tax deduction for the amount of
income recognized by the participant.
 
                                      10
<PAGE>
 
  A participant who is granted a SAR will not recognize any taxable income at
the time of grant, but will recognize taxable income at the time of exercise
equal to the difference between the reference price of the shares and the
market price of the shares on the date of exercise, and the participant's
employer will be entitled to a tax deduction for the amount of income
recognized by the participant.
 
  A participant who has been granted either performance units or performance
shares will not recognize taxable income at the time of the grant. A
participant will recognize ordinary income at the time the award is paid equal
to the amount of cash paid or the value of shares delivered, and the
participant's employer will be entitled to a tax deduction for the amount of
income recognized by the participant.
 
  A participant who has been granted an award of restricted shares of common
stock will not recognize taxable income at the time of the grant, and the
participant's employer will not be entitled to a tax deduction at the time of
the grant, unless the participant makes an election to be taxed at the time of
the award. When the restrictions lapse, the participant will recognize taxable
income in an amount equal to the excess of the fair market value of the shares
at such time over the amount, if any, paid for such shares. The participant's
employer will be entitled to a corresponding tax deduction.
 
  A participant who has been granted an unrestricted stock award will
recognize taxable income at the time of grant in an amount equal to the then
fair market value of the Common Stock awarded. The participant's employer will
receive a corresponding tax deduction.
 
              ITEM C: AUTHORIZATION OF ADDITIONAL SHARES FOR THE
                UNICOM CORPORATION EMPLOYEE STOCK PURCHASE PLAN
 
  The third item to be considered by shareholders at the annual meeting will
be an increase in the number of shares reserved for issuance under the Unicom
Corporation Employee Stock Purchase Plan (the "Purchase Plan"). The full text
of the Purchase Plan, as it is proposed to be amended, is attached as Exhibit
B to this Proxy Statement.
 
PRINCIPAL TERMS
 
  Under the Purchase Plan, all regular full-time employees of Unicom and of
such subsidiaries of Unicom as the Board of Directors of Unicom shall
designate, including officers but not Directors who are not officers or
employees, may accumulate up to 10% of their regular pay and on designated
dates twice each year (in April and October) use such accumulated savings to
purchase, at their option, common stock of Unicom at 90% of its closing market
price on the Chicago Stock Exchange on such dates. No employee is eligible to
participate in the Purchase Plan who, immediately after he has made an
election to purchase shares under the Purchase Plan, would own stock
possessing 5% or more of the total combined voting power or par value of all
classes of stock of Unicom or any subsidiary of Unicom, and no employee has
the right to purchase stock under the Purchase Plan at a rate of more than
$25,000 in any calendar year. An employee may withdraw from the Purchase Plan
by notifying Unicom prior to the designated dates. In the event of withdrawal
from the Purchase Plan, or its termination, all funds held for the account of
an employee under the Purchase Plan will be refunded without interest.
Unicom's Board of Directors may exclude from participation in the Purchase
Plan employees who do not meet certain minimum requirements as to length of
service.
 
AMENDMENT AND TERMINATION
 
  Unicom's Board of Directors may at any time interpret, amend, suspend, or
terminate the Purchase Plan except that (a) the number of shares reserved
under the Purchase Plan may not be
 
                                      11
<PAGE>
 
changed by the Board, and (b) the terms of the Purchase Plan governing
determinations of the purchase prices for purchase of stock under it may be
changed by the Board only to conform such terms with any then applicable
provision of the Internal Revenue Code or any regulation issued thereunder.
Unless previously terminated by the Board, the Purchase Plan will terminate
automatically at the end of the second full calendar month following any six-
month payment period if, as of such month-end, the total number of shares
reserved for subsequent sale pursuant to the Purchase Plan shall be less than
one-third of the total number of shares purchased with respect to the last
preceding payment period within which shares were sold under the Purchase
Plan.
 
AVAILABLE SHARES; PURPOSE OF AMENDMENT
 
  As of December 31, 1997, a total of 9,511,917 shares of Unicom common stock
had been sold to employees for an aggregate price of $246,710,828, leaving
507,567 shares available for sale pursuant to the Purchase Plan. Of the total
609,596 shares issued under the Purchase Plan from January 1, 1995 to December
31, 1997, a total of 3,659 were purchased by the current executive officers,
for an aggregate consideration of $82,624. The only current executive officers
who participated in the Purchase Plan during such period were Messrs.
O'Connor, McCoy and Wallace. During such period, Mr. O'Connor purchased 3,012
shares for an aggregate consideration of $67,517, Mr. McCoy purchased 73
shares for an aggregate consideration of $1,665, and Mr. Wallace purchased 574
shares for an aggregate consideration of $13,442. As of the most recent
issuance on November 1, 1997, 2,247 employees were participating in the
Purchase Plan. It is estimated that approximately 200,000 shares will be
purchased under the Purchase Plan during 1998 and it is not expected,
therefore, that sufficient shares will remain for continuation of the Purchase
Plan after 1999 unless additional shares are authorized.
 
  Accordingly, it is proposed that the Purchase Plan be amended by adding
500,000 shares to the shares available for purchase by employees. The proposed
amendment, if approved by shareholders, would amend Section 1 of the Purchase
Plan to change the aggregate number of shares available for Awards under the
Purchase Plan from 507,567 to 1,007,567.
 
FEDERAL TAX TREATMENT
 
  Under current U.S. federal tax law, if an employee holds stock acquired
under an "employee stock purchase plan" for a period of two years or more, any
profit to him on resale, up to the amount of the discount from market value on
his purchase date, is subject to tax as ordinary income and the balance is
subject to tax as a capital gain. If the stock is held for such period, the
participant's employer is not allowed to deduct from its income for federal
income tax purposes the value of the purchase right to the employee. If an
employee disposes of stock within two years of its acquisition, the employee's
entire discount from market value on his purchase date is subject to tax as
ordinary income; any further profit will be subject to tax as a capital gain;
any loss, after considering the full 10% discount as ordinary income, will be
treated as a capital loss; and the participant's employer is entitled to a
federal income tax deduction equal to the entire discount.
 
                         ITEM D: APPROVAL OF AUDITORS
 
  Subject to shareholder approval, the Board of Directors of ComEd has
appointed Arthur Andersen LLP, independent public accountants, as Auditors to
examine the annual and quarterly consolidated financial statements of ComEd
and its subsidiary companies for 1998. The shareholders will be asked at the
annual meeting to approve such appointment. The firm of Arthur Andersen LLP
has audited the accounts of Unicom since its inception in 1994, and ComEd
since 1932. A representative of Arthur Andersen LLP will be present at the
meeting to make a statement if such representative so desires, and to respond
to shareholders' questions.
 
                                      12
<PAGE>
 
                            EXECUTIVE COMPENSATION
 
  The following table sets forth certain information relating to the
compensation during the past three calendar years of those persons who were,
at December 31, 1997, the Chief Executive Officer and the other four most
highly compensated executive officers of Unicom or ComEd, and one individual
who would have been among the four most highly compensated executive officers
on that date but for the fact that the individual was not serving as an
executive officer on December 31, 1997.
 
SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                ANNUAL COMPENSATION        LONG-TERM COMPENSATION
                             ------------------------- -------------------------------
                                                               AWARDS          PAYOUTS
                                               OTHER   ----------------------- -------
                                              ANNUAL               SECURITIES          ALL OTHER
                                              COMPEN-  RESTRICTED  UNDERLYING   LTIP    COMPEN-
  NAME AND PRINCIPAL         SALARY   BONUS  SATION(1)  STOCK(2)  OPTIONS/SARS PAYOUTS SATION(3)
       POSITION         YEAR    $       $        $         $           #          $        $
  ------------------    ---- ------- ------- --------- ---------- ------------ ------- ---------
<S>                     <C>  <C>     <C>     <C>       <C>        <C>          <C>     <C>
James J. O'Connor       1997 929,042 400,000      0         --       80,000    371,555  106,155
 Chairman (Chief        1996 844,926 528,079      0         --       65,000    324,956  101,174
 Executive Officer)     1995 826,926 826,926      0         --          --     452,296   98,102
 ComEd and Unicom

Samuel K. Skinner       1997 652,269 275,000      0         --       60,000    261,153  104,976
 President              1996 589,000 368,125      0         --       50,000    232,994  102,048
 ComEd and Unicom       1995 580,000 580,000      0         --          --     324,297  105,828

Robert J. Manning       1997 312,802 115,092      0     291,250      25,000     84,306   19,894
 Executive Vice         1996 247,135  53,601      0         --       17,500     75,946   17,048
 President              1995 234,035  65,056      0         --          --     105,706   15,038
 ComEd

Michael J. Wallace      1997 328,229  47,541      0         --       12,500     99,732   17,419
 Senior Vice President  1996 308,440  94,104      0         --       15,000     87,847   16,488
 ComEd                  1995 277,440  93,021      0         --          --     122,271   13,469

Pamela B. Strobel       1997 304,970  55,656      0     291,250      17,500     67,210   19,247
 Senior Vice President  1996 262,300  79,510      0         --       12,000     54,526   17,445
 and General Counsel    1995 238,000  96,563      0         --          --      75,892   17,146
 ComEd and Unicom

Leo F. Mullin(4)        1997 478,869     --       0         --       60,000        --    50,570
 Former Vice Chairman   1996 580,000 362,500      0         --       50,000     91,849  117,287
 ComEd and Unicom       1995  35,508 275,000      0         --          --      15,156    1,953

</TABLE>
- ---------------------
(1) Excludes perquisites and other benefits, unless the aggregate amount of
    such compensation is at least the lesser of either $50,000 or 10% of the
    total annual salary and bonus reported for the named executive officer.

(2) The value shown is as of the date of issuance. Dividends are paid or
    accrued on restricted stock awards at the same rate as paid to all
    shareholders. As of December 31, 1997, Mr. Manning and Ms. Strobel each
    had an aggregate of 10,000 shares of restricted stock worth $307,500.

(3) Amounts shown include matching contributions made by ComEd pursuant to the
    ComEd Employee Savings and Investment Plan ("ESIP"), incremental interest
    earned on deferred compensation which is in excess of 120% of the
    corresponding Federal long-term rate, matching contributions made by ComEd
    pursuant to the ComEd Excess Benefit Savings Plan and premiums and
    administrative service fees paid by ComEd on behalf of the named
    individuals under various group life insurance plans. For the year 1997,
    contributions made to the ESIP amounted to $6,491, $4,049, $4,099, $3,437,
    $4,274 and $6,935 on behalf of Messrs. O'Connor, Skinner, Manning and
    Wallace, Ms. Strobel and Mr. Mullin, respectively. The amount of
    incremental interest earned during 1997 on deferred compensation totaled
    $1,072 and $18 on behalf of Messrs. O'Connor and Wallace, respectively.
    Contributions made to the ComEd Excess Benefit Savings Plan during 1997
    totaled $27,619, $23,281, $8,554, $9,821, $8,331 and $10,614 on behalf of
    Messrs. O'Connor, Skinner, Manning and Wallace, Ms. Strobel and Mr.
    Mullin, respectively. Premiums and administrative service fees paid during
    1997 for Split Dollar Life,
 
                                      13
<PAGE>
 
    Accidental Death and Travel Accident insurance policies for Messrs.
    O'Connor, Skinner, Manning and Wallace, Ms. Strobel and Mr. Mullin,
    respectively, are as follows: $70,323, $600 and $50; $77,191, $420 and $35;
    $7,077, $151 and $13; $3,944, $184 and $15; $6,467, $161 and $14; $32,566,
    $420 and $35. ComEd is entitled to recover the premiums and administrative
    service fees from any amounts paid by the insurer on such Split Dollar Life
    policies and has retained a collateral interest on each policy to the
    extent of the premiums and administrative service fees paid with respect to
    such policy.
(4) Mr. Mullin became an executive officer of Unicom and ComEd in December
    1995, and resigned in August 1997. His options were forfeited upon his
    resignation.
 
OPTION/SAR GRANTS IN LAST FISCAL YEAR
 
 
<TABLE>
<CAPTION>
                                       INDIVIDUAL GRANTS
                          --------------------------------------------
                           NUMBER OF
                          SECURITIES   % OF TOTAL
                          UNDERLYING  OPTIONS/SARS EXERCISE            GRANT DATE
                          OPTION/SARS  GRANTED TO  OR BASE              PRESENT
                            GRANTED   EMPLOYEES IN  PRICE   EXPIRATION   VALUE
          NAME               #(1)     FISCAL YEAR  $/SHARE     DATE       $(2)
          ----            ----------- ------------ -------- ---------- ----------
<S>                       <C>         <C>          <C>      <C>        <C>
James J. O'Connor (CEO).    80,000        5.97      22.313   7/09/07    223,200
Samuel K. Skinner.......    60,000        4.48      22.313   7/09/07    167,400
Robert J. Manning.......    25,000        1.87      22.313   7/09/07     69,750
Michael J. Wallace......    12,500        0.93      22.313   7/09/07     34,875
Pamela B. Strobel.......    17,500        1.31      22.313   7/09/07     48,825
Leo F. Mullin(3)........    60,000        4.48      22.313   7/09/07    167,400
</TABLE>
- --------------------
(1) Each option becomes exercisable in equal annual increments on the first,
    second and third anniversaries of the July 1997 grant date, subject to
    acceleration in the event that a change in control of the Company occurs.
    The options do not include any stock appreciation rights.
(2) The "grant date present value" is based upon the Black-Scholes option-
    pricing model. The actual value, if any, an executive may realize upon
    exercise of the option will depend on the excess of the stock price over
    the exercise price on the date the option is exercised. Consequently,
    there is no assurance the value realized by an executive will be at or
    near the value estimated by the Black-Scholes model. The principal
    assumptions incorporated into the valuation model by the Company are as
    follows: (i) expected time to exercise of seven years, (ii) dividend yield
    rate of 7.2%, (iii) risk-free interest rate of 6.25% and (iv) expected
    volatility of 22.29%.
(3) Mr. Mullin's options were forfeited upon his resignation from the Company
    in August 1997.
 
LONG-TERM INCENTIVE PLANS--AWARDS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                          PERFORMANCE
                                           OR OTHER     ESTIMATED FUTURE PAYOUTS
                                            PERIOD                UNDER
                              NUMBER         UNTIL     NON-STOCK PRICE-BASED PLANS
                            OF SHARES,    MATURATION  -----------------------------
                             UNITS OR         OR      THRESHOLD  TARGET    MAXIMUM
          NAME            OTHER RIGHTS(1)  PAYOUT(2)   NUMBER    NUMBER    NUMBER
          ----            --------------- ----------- --------- --------- ---------
                                                      (NUMBER OF PERFORMANCE UNITS)
<S>                       <C>             <C>         <C>       <C>       <C>
James J. O'Connor (CEO).     15,528.46      3 years   7,764.23  15,528.46 31,056.92
Samuel K. Skinner.......      9,790.24      3 years   4,895.12   9,790.24 19,580.48
Robert J. Manning.......      4,878.50      3 years   2,439.25   4,878.50  9,757.00
Michael J. Wallace......      3,681.43      3 years   1,840.72   3,681.43  7,362.86
Pamela B. Strobel.......      3,881.30      3 years   1,940.65   3,881.30  7,762.60
Leo F. Mullin(3)........        --            --         --        --        --
</TABLE>
- --------------------
(1) Long-term performance unit awards were initiated during 1994 to executive
    and group level employees under the Unicom Corporation Long-Term Incentive
    Plan. Under the awards
 
                                      14
<PAGE>
 
    described in the table, the number of units initially awarded to a
    participant is determined by dividing a portion of base salary (including
    income from current compensation units under Unicom's and ComEd's Deferred
    Compensation Unit Plans) (such portion being 50% for Mr. O'Connor, 45% for
    Mr. Skinner, 40% for Mr. Manning, and 35% for Mr. Wallace and Ms. Strobel)
    by $30.75. Payouts are based on the cumulative total shareholder return on
    Unicom common stock (assuming reinvestment of dividends) relative to that
    of the other companies comprising the Dow Jones Utility Stock Index over a
    three-year performance period ending December 31, 2000. The dollar value of
    a payout is determined by multiplying the number of units applicable to the
    level of performance achieved by the average closing price of Unicom common
    stock as reported in The Wall Street Journal as New York Stock Exchange
    Composite Transactions during the calendar quarter ending on December 31,
    2000. Payments are to be made half in cash and half in the form of
    unrestricted shares of Unicom common stock. Effective with awards payable
    in 1996, a participant may elect to defer receipt of up to 100% of the
    total award (net of applicable taxes) under the Unicom Corporation Stock
    Bonus Deferral Plan and receive, after such deferral, the deferred amount
    in the form of unrestricted shares of Unicom common stock. Notwithstanding
    the foregoing, no payouts are earned or made if the relative cumulative
    total shareholder return on Unicom common stock is lower than the 25th
    percentile; and the highest level of payout is reached when such relative
    return equals or exceeds the 90th percentile.
(2) Three-year period ending December 31, 2000.
(3) Mr. Mullin resigned in August 1997, prior to the granting of awards.
 
SERVICE ANNUITY SYSTEM PLAN
 
  The following table sets forth the annual retirement benefits payable under
ComEd's Service Annuity System Plan (including payments under a supplemental
management retirement plan) to employees who retire at age 65 at stated levels
of compensation and years of service at retirement (in 1998).
 
<TABLE>
<CAPTION>
                                  PENSION PLAN TABLE
- --------------------------------------------------------------------------------------
 HIGHEST                  ANNUAL NORMAL RETIREMENT BENEFITS AFTER SPECIFIED YEARS OF
  4-YEAR                                           SERVICE*
 AVERAGE                 -------------------------------------------------------------
 EARNINGS                   15       20        25         30         35         40
 --------                -------- -------- ---------- ---------- ---------- ----------
<S>                      <C>      <C>      <C>        <C>        <C>        <C>
$  100,000.............. $ 34,157 $ 44,694 $   54,589 $   64,005 $   73,063 $   81,854
   200,000..............   68,315   89,387    109,178    128,010    146,127    163,708
   300,000..............  102,472  134,081    163,766    192,015    219,190    245,562
   400,000..............  136,629  178,774    218,355    256,020    292,253    327,417
   500,000..............  170,787  223,468    272,944    320,025    365,317    409,271
   600,000..............  204,944  268,162    327,533    384,030    438,380    491,125
   700,000..............  239,101  312,855    382,122    448,035    511,443    572,979
   800,000..............  273,259  357,549    436,711    512,040    584,507    654,833
   900,000..............  307,416  402,242    491,299    576,045    657,570    736,687
 1,000,000..............  341,573  446,936    545,888    640,051    730,633    818,542
 1,100,000..............  375,731  491,629    600,477    704,056    803,697    900,396
 1,200,000..............  409,888  536,323    655,066    768,061    876,760    982,250
 1,300,000..............  444,045  581,017    709,655    832,066    949,823  1,064,104
 1,400,000..............  478,203  625,710    764,244    896,071  1,022,887  1,145,958
 1,500,000..............  512,360  670,404    818,832    960,076  1,095,950  1,227,812
 1,600,000..............  546,517  715,097    873,421  1,024,081  1,169,014  1,309,667
 1,700,000..............  580,675  759,791    928,010  1,088,086  1,242,077  1,391,521
 1,800,000..............  614,832  804,485    982,599  1,152,091  1,315,140  1,473,375
 1,900,000..............  648,989  849,178  1,037,188  1,216,096  1,388,204  1,555,229
 2,000,000..............  683,147  893,872  1,091,776  1,280,101  1,461,267  1,637,083
</TABLE>
- --------------------
*  An employee may elect a marital annuity for a surviving spouse which would
   reduce the employee's normal retirement benefits. The amounts shown reflect
   certain assumptions as to total earnings, but do not reflect any reduction
   for Social Security benefits.
 
                                      15
<PAGE>
 
  Service Annuity System Plan--ComEd maintains a non-contributory Service
Annuity System Plan for all regular employees of ComEd. The Plan provides
benefits upon retirement at age 65 which are based upon years of credited
service and percentages of the employee's highest consecutive four-year
average annual base pay, which includes basic compensation and certain
incentive pay. An employee with at least 10 years of service may retire prior
to attaining age 65 (but not prior to age 50) and will receive reduced
benefits if retirement is prior to age 60. A non-executive employee may work
beyond age 65 with additional benefits accruing for earnings and service after
age 65. Contributions to the Plan by ComEd are based upon actuarial
determinations 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. Compensation used in the computation
of annual retirement benefits under the Plan is substantially equivalent to
the amounts shown in the "Salary" and "Bonus" columns under the "Annual
Compensation" heading of the Summary Compensation Table. The compensation used
in the computation of annual retirement benefits under the Plan is limited by
the Internal Revenue Code as of January 1, 1998 to $160,000 (which number is
subject to adjustment for increases in the cost of living) for any one
employee. Any reduction in the annual retirement benefits payable to
management employees under the Plan as a result of any limitations imposed by
the Internal Revenue Code is restored under a supplemental management
retirement plan maintained by ComEd. Thus, annual retirement benefits, as set
forth in the Pension Plan Table above, are based on the amounts shown in the
"Salary" and "Bonus" columns under the "Annual Compensation" heading of the
Summary Compensation Table, without limitation as a result of the application
of the provisions of the Internal Revenue Code. Credited years of service
under the Plan for the persons named in the Summary Compensation Table are as
follows: James J. O'Connor, 34 years; Samuel K. Skinner, 25 years; Robert J.
Manning, 33 years; Michael J. Wallace, 23 years; and Pamela B. Strobel, 5
years. Ms. Strobel will be credited with an additional nine years upon
achieving five years of service and attaining age 50. Mr. Mullin, who resigned
in August 1997, has forfeited his retirement benefits.
 
EMPLOYMENT AGREEMENTS
 
  Unicom and ComEd have an employment agreement with John W. Rowe, pursuant to
which he became Chairman, President and Chief Executive Officer of each
company on March 16, 1998. The agreement provides that Mr. Rowe will be paid
an annual base salary of at least $900,000. Unicom also granted Mr. Rowe an
option to purchase 250,000 shares of common stock with an option price equal
to the fair market value of the common stock as of March 16, 1998. Such
options become exercisable in equal installments on March 16 of 1999, 2000,
and 2001, and expire on March 16, 2008. Mr. Rowe will not receive any
additional grants of stock options during 1998. The agreement further provides
that Mr. Rowe will participate in Unicom's Annual Incentive Award Program and
will receive an annual incentive award for 1998 and 1999 that shall equal at
least $600,000. Mr. Rowe also participates in the Unicom Long-Term Performance
Unit Award Program, and any award payable under such Program with respect to
the three-year performance periods ending on December 31, 1998, 1999, or 2000
will be made as though he had participated in the Program throughout such
performance periods (except in the case of a termination of employment). As
partial compensation for actual compensation, benefits and programs which Mr.
Rowe was, or was reasonably expected to become, entitled to receive from his
previous employer, he received a lump-sum payment of $2,000,000. In addition,
Mr. Rowe received $600,000 as an inducement to enter into the employment
agreement. Mr. Rowe's agreement provides for a retirement benefit equal to the
amount that would have been payable under the Service Annuity System Plan
(plus amounts payable under the ComEd Supplemental Management Retirement Plan)
for an employee who retires at age 60 (or such greater age if Mr. Rowe should
become eligible for the retirement benefit after attaining the age of 60)
calculated based on the assumption that Mr. Rowe had completed 20 years of
credited service as well as his actual years of credited service. The
agreement further provides for severance payments to Mr. Rowe if he should be
terminated without cause or if he should terminate the employment
 
                                      16
<PAGE>
 
agreement for good reason (as defined in the agreement) equal to his base
salary at the time of such termination, together with a formula annual incentive
award (as defined in the agreement), until the later of March 16, 2001 or one
year after termination (if such termination should occur before March 16, 2001),
or one year after the date of termination, (if such termination should occur
after March 16, 2001), and a continuation of health and life insurance benefits
during such period, plus retirement benefits. Mr. Rowe agreed not to use for his
own benefit or disclose any confidential information of Unicom or ComEd during
or after the term of his employment, and not to compete with Unicom or ComEd or
solicit any key employee or interfere with the relationship with any material
customer or supplier of either company until two years after the term of his
employment with the companies.
 
  In connection with Mr. O'Connor's resignation from all positions as an
officer or director with Unicom and ComEd and their subsidiaries effective as
of March 16, 1998 and his retirement effective as of September 1, 1998, Unicom
and ComEd entered into a Retirement and Separation Agreement with Mr.
O'Connor. Pursuant to the retirement agreement, Mr. O'Connor upon his
retirement will receive a severance payment equal to $3,056,000, which is two
times the sum of his current annual base salary and target annual incentive
payment. Mr. O'Connor will also receive the Long-Term Performance Unit and
Annual Incentive Awards to which he is entitled prorated through August 31,
1998. Mr. O'Connor is also entitled to office space and secretarial assistance
through August 31, 2008, to financial counseling and tax preparation services
for five years following the date of the agreement, to certain items of
personal property that had been provided for his business use and to
reimbursement for certain other expenses. Mr. O'Connor agreed never to use or
disclose any confidential information of Unicom and ComEd, and not to compete
with Unicom or ComEd for a period of two years after his retirement date,
September 1, 1998. Mr. O'Connor also agreed not to solicit any of Unicom's or
ComEd's key employees or interfere with the relationship of Unicom or ComEd
with any material customer or supplier and not to represent as legal counsel
any competitor in a matter adverse to the interests of Unicom or ComEd, all
for a period of two years after the date of the agreement.
 
  ComEd had an employment agreement with Samuel K. Skinner that provided for
an initial 1993 base salary of $490,000 per annum, an unfunded supplemental
retirement benefit and credit for ten years of service for purposes of
determining eligibility for certain post-retirement health care benefits. The
supplemental retirement benefit would not vest until the completion of five
years of employment, unless ComEd terminated Mr. Skinner's employment for
reasons other than fraud or willful misconduct; however, payment of a
surviving spouse benefit would have been made if Mr. Skinner died within such
five years. The formula underlying the supplemental retirement benefit
provided a benefit, together with any benefits payable under the Service
Annuity System Plan and a social security supplement, equal to one-third of
Mr. Skinner's highest annual earnings during the preceding five years, after
five years of service, and increasing ratably annually to one-half of such
annual earnings after ten years. The agreement also provided for a severance
payment equal to two years of base salary, payable over three years, and a
three-year continuation of health and life insurance benefits in the event
that Mr. Skinner's employment was terminated by ComEd for reasons other than
death, fraud or willful misconduct. The severance payment was subject to
reduction to the extent that Mr. Skinner received compensation from another
full-time employer during the payment period. In connection with Mr. Skinner's
resignation from all offices on March 16, 1998, and his retirement at the end
of March 1998, such agreement was terminated and Mr. Skinner entered into a
retirement and separation agreement with Unicom and ComEd. Pursuant to the
retirement agreement, Mr. Skinner received a severance payment equal to
$2,007,000, which was two times the sum of his current annual base salary and
target annual incentive payment at the time of his retirement. Mr. Skinner is
also entitled to a retirement benefit equal to the retirement benefit that
would have been payable under the Service Annuity System Plan (plus amounts
payable under the ComEd Supplemental Management Retirement Plan) for employees
who retire at age 60 calculated based on the
 
                                      17
<PAGE>
 
assumption that Mr. Skinner had completed 20 years of credited service as well
as his actual years of credited service. In addition, Mr. Skinner is entitled to
elect post-retirement coverage for himself and his dependents under the ComEd
health plans. Mr. Skinner is also entitled to office space and secretarial
assistance through September 30, 1998, to financial counseling and tax
preparation services for two years following the date of the agreement, to
certain items of personal property that had been provided for his business use
and to reimbursement for certain other expenses. Mr. Skinner agreed never to use
or disclose any confidential information of Unicom and ComEd, and not to compete
with Unicom or ComEd or solicit any of their key employees or interfere with the
relationship of Unicom or ComEd with any material customer or supplier and not
to represent as legal counsel any competitor in a matter adverse to the
interests of Unicom or ComEd, all for a period of two years after the date of
the agreement.
 
  ComEd had an employment agreement with Leo F. Mullin, pursuant to which he
became Vice-Chairman of Unicom and ComEd on December 1, 1995. The agreement
provided that ComEd would pay Mr. Mullin an initial base salary of $577,000
per annum. In addition, Mr. Mullin received a bonus upon commencement of his
duties of $275,000. The agreement provided that he would receive bonuses on
the same basis as any annual bonus paid to Unicom's and ComEd's Chairman or
President, or both, as determined by the Board of Directors. For calendar year
1996, Mr. Mullin was guaranteed a bonus of at least 50% of his base salary. He
was also awarded performance units making him eligible for payments under the
Unicom Corporation Long-Term Incentive Plan. Mr. Mullin's agreement also
provided for an unfunded supplemental retirement benefit pursuant to which he
would have received the annual retirement benefit that would have been payable
under the Service Annuity System Plan if he had retired at age 60 with 20
years of service plus one additional year for each year of actual employment.
The agreement further provided for a severance payment equal to two years of
his then-current base salary and most recent annual bonus, payable over three
years, and a three-year continuation of health and life insurance benefits in
the event that his employment was terminated by ComEd for reasons other than
death, fraud or willful misconduct or in the event that he terminated his
employment because ComEd reduced or failed to pay his salary or took certain
other actions. The severance payment was subject to reduction in the event
that Mr. Mullin accepted other full-time employment during the payment period.
Mr. Mullin voluntarily resigned from the Company in August 1997 and terminated
his employment agreement. Accordingly, he forfeited his rights to the
performance units, severance payments, and retirement and insurance benefits
described above.
 
CORPORATE GOVERNANCE AND COMPENSATION COMMITTEE REPORT ON EXECUTIVE
COMPENSATION
 
  The Corporate Governance and Compensation Committee (the "Committee") of the
Board of Directors of Unicom Corporation ("Unicom") and Commonwealth Edison
Company ("ComEd") have furnished the following report on executive
compensation:
 
  Introduction. It is the policy of the Committee to compensate executive
officers based on their responsibilities, their achievement of annual goals
and the Company's annual and long-term performance. The Committee believes
that compensation paid should be appropriate in relation to the financial
performance of the Company and should be sufficient to enable the Company to
attract and retain individuals possessing the talents required for the
Company's long-term successful performance. The Committee also believes that
the incentive compensation performance goals for executive management should
be based on factors over which management has significant control and which
are important to the Company's long-term success.
 
  In 1997, the major components of executive officer compensation were base
salary, consisting of cash salary and current compensation unit income, non-
qualified stock options, and incentive compensation related to awards under
the Unicom Corporation Long-Term Incentive Plan (the "Incentive Plan").
 
                                      18
<PAGE>
 
  Base Salary. The process of determining the officers' base salary begins
with a review of the salary levels for various comparable executive positions
at twenty-six of the largest companies in the electric utility industry as
published in the 1996 Edison Electric Institute Executive Compensation Survey.
The Committee also considers the median levels of base salary for various
comparable positions among companies in the utility industry and general
industry. This information is used as a reference point due to the similarity
of the basic duties and responsibilities between such positions and positions
within the Company. Judgment is then applied to recognize differences in the
organization structure and responsibilities of executive officers of the
Company, in the size and complexity of the Company's operations, and in the
regulatory environment and competitive challenges faced by the Company. After
considering these various factors, the Committee approved, in December 1996,
base salary ranges for 1997 which were generally about 3% above 1996 levels.
 
  The base salary of each officer is set within the applicable range based on
an assessment of the particular responsibilities and performance of such
officer following, in the case of officers other than the Chairman,
discussions with the Chairman regarding his recommendations. For 1997, the
Committee approved increases in cash salary for the executive officers
averaging 5.5% of base salary. Percentage increases for individual executive
officers varied and were structured, in part, to recognize changes in industry
levels and to reflect the impact, performance and contributions of the
individual officers.
 
  In 1997, most executive officers held current compensation units. Each such
unit entitles the holder to receive current income equal to the dividends paid
on one share of Unicom Common Stock. During 1997, the Committee awarded
compensation units to seven executive officers in an effort to provide a
salary enhancement for these individuals in relation to competitive positions
elsewhere.
 
  Incentive Compensation Awards. Another component of executive compensation
is incentive compensation earned under awards made by the Committee (or its
Incentive Compensation Subcommittee) under the Incentive Plan. Such awards
include an annual incentive award, a long-term performance unit award covering
a three-year performance period and stock options.
 
  The 1997 Annual Incentive Award for Management Employees was established to
reward the achievement of certain corporate and business unit goals during
1997. The annual incentive award helped the Company communicate its strategic
direction and focus employees' efforts. The award is variable and is designed
to reward performance against goals. The amount of the annual incentive awards
is based upon the individual and collective accomplishments of employees; the
greater the goal achievement, the greater the incentive award. Varying
payments were established based on Committee assessment with respect to the
appropriate level of incentive and award, considering the degree of difficulty
of the goals and degree of responsibility of the different levels of
management for achievement of the goals.
 
  With respect to management employees other than Messrs. O'Connor, Mullin,
and Skinner (and selected sales-related positions), the 1997 corporate goal
was the Unicom Incentive Plan Profit Margin (UIPPM). The UIPPM was defined as
revenues (excluding fuel adjustment clause revenues and revenue taxes) less
Operations and Maintenance expenditures, fuel and purchased power
expenditures, depreciation charges, property tax charges and interest charges.
Certain other revenue and expense items were excluded from the calculation.
These were primarily unusual items that the Committee determined should not be
included in determining performance achievement. The UIPPM's minimum level of
performance was not achieved; thus, no payout was made for the corporate goal.
 
  Business unit goals comprised the other component of the 1997 Annual
Incentive Award. These goals were qualitative and/or quantitative in design.
Quantitative goals, such as productivity, growth, and customer satisfaction,
were measured on a scale of performance ranging from Threshold to
 
                                      19
<PAGE>
 
Maximum. Qualitative goals were linked to strategic business initiatives.
Business unit managers assessed performance against qualitative goals with
internal approval by a committee of five senior executives and final approval
by the Committee.
 
  With respect to Messrs. O'Connor, Mullin, and Skinner, the annual incentive
award was based on the UIPPM, and on a strategic goal accomplishment as
determined by the Committee.
 
  Longer-term incentive awards were established in 1994 to focus an interest
on long range performance by linking certain incentive payments to the total
return on Unicom Common Stock in relation to that of the other companies
constituting the Dow Jones Utility Stock Index over three-year performance
periods. The Dow Jones Utility Stock Index includes Unicom and eight of the
other large utilities in the 1996 Edison Electric Institute Executive
Compensation Survey. Incentive opportunities are expressed as a percentage of
base salary and increase with the executive's management level.
 
  For the three-year performance period that ended with 1997, Unicom stock
performance was slightly above the 39th percentile among the stock
constituting the Dow Jones Utility Stock Index. Resulting payments to certain
executive officers are included in the "Payouts" column under the "Long-Term
Compensation" heading in the Summary Compensation Table.
 
  Stock Option Grants in 1997. The Company grants non-qualified stock options
to reward and motivate the Company's management to increase long-term
shareholder value. Option grants are made generally to key employees who are
expected to contribute materially to the Company's success. The option awards
permit grantees to purchase shares of Unicom's Common Stock at an exercise
price equal to the market value on the date of grant, and become exercisable
in equal increments over a three-year period (subject to acceleration in the
event of a change in control of the Company). The options have a maximum term
of ten years. Committee (or in certain cases Incentive Compensation
Subcommittee) decisions with respect to the size of option grants were based
on an evaluation of competitive compensation data drawn from eleven other
utilities and ten non-utility companies similar to the Company as well as the
option recipient's base salary, management level, performance, and potential.
 
  Compensation of the Chief Executive Officer. The Committee's assessment of
the Chairman and Chief Executive Officer's personal performance at the outset
of 1997, based upon a non-quantifiable evaluation of his leadership,
achievements and contributions to the Company during 1996, was favorable.
Under Mr. O'Connor's leadership, the Company's financial performance in 1996
improved over 1995 as evidenced by an increase in earnings per share to $3.09
in 1996 from $2.98 in 1995. Thus, Mr. O'Connor's cash salary for 1997 was
increased $55,074 from its 1996 level. The Chairman's total base salary in
1997 was set at a rate of $900,000 per year. The Committee's objective in
structuring the Chairman's incentive compensation was to encourage both short-
term and longer-term actions to increase the cumulative return on Unicom's
Common Stock. The elements of these awards are described above.
 
  The Chairman's total compensation (cash salary, compensation unit income,
and incentive compensation) for 1997 was slightly lower than for 1996 as a
result of reduced incentive compensation payments. Such payments were lower as
a result of a decline in operating results for the year as compared with prior
performance and with goals established for the year. The Committee believes,
based on available information, that both the absolute and relative levels of
compensation for 1997 were fully appropriate considering the size and
complexity of the Company's operations (the Company is one of the largest in
the comparison group of electric utility companies) as well as other utility
companies and general industry and also considering the Committee's favorable
assessment of the Chairman's performance in providing leadership to the
Company. For example, under the Chairman's leadership, the Company was a part
of a coalition that played a key role in the passage
 
                                      20
<PAGE>
 
of landmark electric industry restructuring legislation in Illinois in
December 1997. The price of Unicom's common stock closed at $30.75 at year-
end, increasing the market value of Unicom's stock and providing a total
return (price appreciation plus reinvested dividends) to shareholders of 21.3%
for the year 1997.
 
  Internal Revenue Code Section 162(m) Considerations. Under Section 162(m) of
the Internal Revenue Code, executive compensation in excess of $1 million is
generally not deductible for purposes of corporate income taxes. However,
"qualified performance-based compensation" which is paid pursuant to a plan
meeting certain requirements of the Code and applicable regulations remains
deductible. As noted in previous reports, the Committee intends to continue
reliance on performance-based compensation programs, consistent with sound
executive compensation policy. Such programs will be designed to fulfill, in
the best possible manner, future corporate business objectives. The
Committee's policy has been to seek to cause executive incentive compensation
to qualify as "performance-based" in order to preserve its deductibility for
federal income tax purposes to the extent possible without sacrificing
flexibility in designing appropriate compensation programs. The Company last
year obtained shareholder approval of performance-based incentives in Long-
Term Performance Unit Awards under the Unicom Long-Term Incentive Plan in
order to qualify such compensation as "performance-based." However, in order
to provide executives with appropriate incentives, the Committee may also
determine, in light of all applicable circumstances, that it would be in the
best interests of the Company for awards to be paid under certain of its
incentive compensation programs or otherwise in a manner that would not
satisfy the requirements to qualify as performance-based compensation under
Code Section 162(m).
 
                                Corporate Governance and Compensation Committee
 
                                     Edward A. Brennan,     Donald P. Jacobs
                                      Chairman              Edgar D. Jannotta
                                     James W. Compton       George E. Johnson   
                                     Bruce DeMars              
                                     Sue L. Gin                
                                                               
 
                                      21
<PAGE>
 
SHAREHOLDER RETURN PERFORMANCE
 
  Set forth below is a line graph comparing the quarterly percentage change in
the cumulative total shareholder return on Unicom common stock ("UCM") against
the cumulative total return of the S&P 500 Composite Stock Index and the Dow
Jones Utility Stock Index for the five-year period ending December 31, 1997.
 
                 CUMULATIVE PERFORMANCE SINCE JANUARY 1, 1993
                      ASSUMING REINVESTMENT OF DIVIDENDS
 
                           (JANUARY 1, 1993 = $100)
 
                       [PERFORMANCE GRAPH APPEARS HERE]
<TABLE>
<CAPTION>
                COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
           AMONG UNICOM COMMON STOCK, DOW JONES UTILITY STOCK INDEX
                       AND S&P 500 COMPOSITE STOCK INDEX

                           UCM COMMON STK*      DJ UTIL      S&P 500 COMPOSITE
                           ---------------      -------      -----------------
<S>                        <C>                  <C>          <C>
JANUARY 01, 1993.....            100              100               100
DECEMBER 31, 1993....            128              110               110
DECEMBER 31, 1994....            117               93               112
DECEMBER 31, 1995....            169              123               153
DECEMBER 31, 1996....            148              134               188
DECEMBER 31, 1997....            180              165               251
</TABLE>

   ---------------------
   *  Performance shown for Unicom Common Stock on and after September
      1, 1994 and for ComEd Common Stock prior to that date.
 
                                      22
<PAGE>
 
                                    VOTING
 
  Shareholders of record on the books of ComEd at 4:00 p.m., Chicago time, on
March 31, 1998, will be entitled to vote at the annual meeting. As of March
31, 1998, there were outstanding 214,232,430 shares of Common Stock, par value
$12.50 per share (of which Unicom beneficially owned 214,226,742 shares),
61,724 shares of $1.425 Convertible Preferred Stock, without par value, and
15,558,109 shares of Cumulative Preference Stock, without par value. Each
share entitles the holder to one vote on each matter submitted to a vote at
the meeting, except that in the election of Directors each shareholder has the
right to vote the number of shares owned by such shareholder for as many
persons as there are Directors to be elected, or to cumulate such votes and
give one candidate as many votes as shall equal the number of Directors to be
elected multiplied by the number of such shares or to distribute such
cumulative votes in any proportion among any number of candidates. The holders
of a majority of the outstanding shares entitled to vote on a particular
matter and represented in person or by proxy will constitute a quorum for the
consideration of such matter at the meeting.
 
  The eight persons receiving the greatest number of votes shall be elected as
Directors. Abstaining for a Director nominee will not prevent such Director
nominee from being elected. The affirmative vote of a majority of the shares
of stock represented at the meeting and entitled to vote on such matter is
required for approval of Item B (the authorization of additional shares for
the Unicom Corporation Long-Term Incentive Plan), Item C (the authorization of
additional shares for the Unicom Corporation Employee Stock Purchase Plan) and
Item D (the appointment of Auditors). Abstaining with respect to these matters
will have the legal effect of voting against such matter. UNICOM INTENDS TO
VOTE ITS SHARES OF COMED COMMON STOCK FOR THE ELECTION OF THE NOMINEES NAMED
IN THIS INFORMATION STATEMENT AND FOR APPROVAL OF THE OTHER ITEMS AS DESCRIBED
ABOVE AND, CONSEQUENTLY, SUCH MATTERS ARE EXPECTED TO BE APPROVED.
 
                 SHAREHOLDER PROPOSALS FOR 1999 ANNUAL MEETING
 
  Any shareholder proposal intended to be presented at the 1999 annual meeting
of ComEd's shareholders must be received at the principal executive offices of
ComEd by February 8, 1999, in order to be considered for inclusion in ComEd's
Information Statement relating to that meeting. Any such proposal should be
directed to the Secretary of ComEd located on the 37th Floor, First National
Bank Building, 10 South Dearborn Street, Chicago, Illinois. If mailed, it
should be sent to Secretary, Commonwealth Edison Company, 10 South Dearborn
Street, Post Office Box 767, Chicago, Illinois
60690-0767.
 
                                 OTHER MATTERS
 
  As of the date of this Information Statement, management knows of no matters
to be brought before the annual meeting other than the matters referred to in
this Information Statement.
 
  By order of the Board of Directors.
 
                                       David A. Scholz
                                       Secretary
 
April 9, 1998
 
A COPY OF COMED'S ANNUAL REPORT ON FORM 10-K TO THE SECURITIES AND EXCHANGE
COMMISSION MAY BE OBTAINED WITHOUT CHARGE BY WRITING TO DAVID A. SCHOLZ,
SECRETARY, COMMONWEALTH EDISON COMPANY, 10 SOUTH DEARBORN STREET, POST OFFICE
BOX 767, CHICAGO, ILLINOIS 60690-0767.
 
                                      23
<PAGE>
 
                                                                      EXHIBIT A
 
                              UNICOM CORPORATION
 
                 AMENDED AND RESTATED LONG-TERM INCENTIVE PLAN
 
                              ARTICLE I: PURPOSE
 
  The purposes of the Long-Term Incentive Plan (the "Plan") of Unicom
Corporation (the "Company") and its subsidiaries are (i) to align the
interests of the Company's stockholders and recipients of awards under the
Plan by increasing the proprietary interest of such recipients in the
Company's growth and success and (ii) to advance the interests of the Company
by attracting and retaining well-qualified persons by providing such persons
with performance-related incentives.
 
                            ARTICLE II: DEFINITIONS
 
  For purposes of the Plan, the following terms shall have the following
meanings:
 
    "Award" shall mean any form of stock option, stock appreciation right,
  stock award, performance shares, performance units or other stock-based
  award granted under this Plan.
 
    "Board" shall mean the Board of Directors of the Company.
 
    "Code" shall mean the Internal Revenue Code of 1986, as amended, or any
  successor legislation.
 
    "Committee" shall mean the Corporate Governance and Compensation
  Committee or such other committee of the Board as may be appointed from
  time to time by the Board consisting of two or more Directors, all of whom
  must qualify as disinterested persons within the meaning of Securities and
  Exchange Commission Regulation (S) 240.16b-3 or any successor regulation.
 
    "Common Stock" shall mean the Common Stock, without par value, of the
  Company.
 
    "Participant" shall mean an employee to whom an Award has been made
  pursuant to this Plan.
 
    "Subsidiary" shall mean any corporation of which the Company owns
  directly or indirectly 51% or more of the outstanding shares of stock
  entitled to vote for the election of directors and any partnership, joint
  venture or other enterprise with respect to which the Company owns a 51% or
  more interest and has the power to direct or cause the direction of the
  management and policies.
 
                           ARTICLE III: ELIGIBILITY
 
  Participants in the Plan shall consist of such employees of the Company and
its Subsidiaries as the Committee in its sole discretion may select from time
to time. The Committee's selection of a person to participate in the Plan in
any year shall not require the Committee to select such person to participate
in the Plan in any other year. No employee shall have the right to be selected
to participate in the Plan.
 
                         ARTICLE IV: SHARES AVAILABLE
 
  4.1 Shares. Subject to adjustment as provided in Section 4.2 of the Plan, an
aggregate of 11,000,000 shares of Common Stock shall be available for Awards
under the Plan, reduced by the sum of the aggregate number of shares of Common
Stock then subject to (i) outstanding stock options
 
                                      A-1
<PAGE>
 
and outstanding stock appreciation rights that are not related to a stock
option, (ii) outstanding Awards which may be exercised or selected solely in
shares of Common Stock and (iii) outstanding Awards which may be exercised or
settled either in shares of Common Stock or cash. To the extent (i) that an
outstanding stock option expires or terminates unexercised or is cancelled or
forfeited (other than in connection with the exercise of a related stock
appreciation right) or (ii) that an outstanding stock appreciation right that
is not related to a stock option or other outstanding Award, either of which
may be exercised or settled (A) solely in shares of Common Stock or (B) in
shares of Common Stock or cash, expires or terminates unexercised or is
cancelled or forfeited, then the shares of Common Stock subject to such
expired, unexercised, cancelled or forfeited portion of such Award shall again
be available for Awards under the Plan. In the event that all or a portion of
a stock appreciation right is exercised, the number of shares of Common Stock
subject to such right (or portion thereof) shall again be available for
issuance under the Plan, except to the extent that shares of Common Stock were
issued (or would have been issued but were withheld to satisfy tax withholding
obligations) upon exercise of the right. Stock appreciation rights and other
Awards which may be exercised or settled only in cash shall not affect the
number of shares of Common Stock available for Awards under the Plan.
 
  Shares of Common Stock to be delivered under the Plan shall be made
available from authorized and unissued shares of Common Stock, or authorized
and issued shares of Common Stock reacquired and held as treasury shares or
otherwise, or a combination thereof.
 
  4.2 Adjustment Provisions. In the event of any stock split, stock dividend,
recapitalization, reorganization, merger, consolidation, combination, exchange
of shares, liquidation, spin-off or other similar change in capitalization, or
any distribution to holders of Common Stock other than a cash dividend, the
number and class of shares available under the Plan, the number and class of
shares subject to each outstanding option and the purchase price per share,
the terms of each outstanding stock appreciation right, and the number and
class of shares subject to each other outstanding Award shall be appropriately
adjusted by the Committee, such adjustments to be made in the case of
outstanding stock options and stock appreciation rights without a change in
the aggregate purchase price or reference price.
 
                           ARTICLE V: ADMINISTRATION
 
  5.1 Administration and Interpretation. The Plan shall be administered and
interpreted by the Committee. The Committee shall have the authority to adopt,
alter and repeal such administrative rules, guidelines and practices governing
the Plan and perform all acts, including the delegation of its administrative
responsibilities, as it shall, from time to time, deem advisable; to construe
and interpret the terms and provisions of the Plan and any Award issued under
the Plan (and any notices or agreements relating thereto); and to otherwise
supervise the administration of the Plan. The Committee may correct any
defect, supply any omission or reconcile any inconsistency in the Plan or in
any notice of an Award or any agreement relating thereto in the manner and to
the extent it shall deem necessary to carry the Plan into effect. Any
decision, interpretation or other action made or taken in good faith by or at
the direction of the Committee (or any of its members) arising out of or in
connection with the Plan shall be within its absolute discretion and shall be
final, binding and conclusive on the Company and all employees and
Participants and their respective beneficiaries, heirs, executors,
administrators, successors and assigns.
 
  Neither the Committee nor any member thereof shall be liable for any act,
omission, interpretation, construction or determination made in connection
with the Plan in good faith, and the members of the Committee shall be
entitled to indemnification and reimbursement by the Company in respect of any
claim, loss, damage or expense (including attorney's fees) arising therefrom
to the full extent permitted by law and under any directors' and officers'
liability insurance that may be in
 
                                      A-2
<PAGE>
 
effect from time to time. In addition, no member of the Board and no employee
of the Company shall be liable for any act or failure to act hereunder, by any
other member or employee or by any agent to whom duties in connection with the
administration of this Plan have been delegated or, except in circumstances
involving a member's or employee's bad faith, gross negligence or fraud, for
any act or failure to act by the member or employee.
 
  A majority of the Committee shall constitute a quorum, and the acts of a
majority of the members present at any meeting at which a quorum is present,
or acts approved in writing by a majority of the Committee without a meeting,
shall be the acts of the Committee.
 
  5.2 Awards. The Committee shall have full authority to grant, pursuant to
the terms of the Plan, to employees: (i) stock options, (ii) stock
appreciation rights, (iii) stock awards, (iv) performance shares, (v)
performance units, and (vi) other stock-based awards. In particular, and
without limitation, the Committee shall have the authority:
 
    (a) to select the employees to whom Awards may from time to time be
  granted hereunder;
 
    (b) to determine the types of Awards, and combinations thereof, to be
  granted hereunder to employees and whether such Awards are to operate on a
  tandem basis and/or in conjunction with or apart from other awards made by
  the Company outside of this Plan;
 
    (c) to determine the number of shares of Common Stock or monetary units
  to be covered by each Award granted hereunder;
 
    (d) to determine the terms and conditions, not inconsistent with the
  terms of this Plan, of any Award granted hereunder (including, but not
  limited to, any restriction or limitation on exercise or transfer, any
  vesting schedule or acceleration thereof, or any forfeiture provisions or
  waiver thereof, regarding any Award and the shares of Common Stock relating
  thereto, based on such factors as the Committee shall determine, in its
  sole discretion);
 
    (e) to determine whether Common Stock and other amounts payable with
  respect to an Award under the Plan shall be deferred either automatically
  or at the election of the Participant; and
 
    (f) to modify or waive any restrictions or limitations contained in, and
  grant extensions to or accelerate the vesting of, any outstanding Awards as
  long as such modifications, waivers, extensions or accelerations are
  consistent with the terms of this Plan; but no such changes shall impair
  the rights of any Participant without his or her consent.
 
  An Award under the Plan shall be made in such manner and evidenced by such
means as the Committee shall determine, which may include, but shall not be
limited to, written agreements between the Company and the employee to whom
the Award is granted.
 
                           ARTICLE VI: STOCK OPTIONS
 
  6.1 Grants. Stock options may be granted alone or in addition to other
Awards granted under this Plan. Each stock option granted under this Plan
shall be of one of two types: (i) an "incentive stock option" within the
meaning of Section 422 of the Code (or any successor provision) or (ii) a non-
qualified stock option. The Committee shall have the authority to grant to any
employee one or more incentive stock options, non-qualified stock options, or
both types of stock options (in each case with or without stock appreciation
rights). No incentive stock options may be awarded after the tenth anniversary
of the date this Plan is adopted by the Board.
 
  6.2 Terms of Options. Stock options granted under this Plan shall be subject
to the following terms and conditions and shall be in such form and contain
such additional terms and conditions, not inconsistent with the terms of this
Plan, as the Committee shall deem desirable:
 
                                      A-3
<PAGE>
 
    (a) Exercise Price. The exercise price per share of Common Stock
  purchasable under a stock option shall be determined by the Committee at
  the time of grant but no incentive stock option shall have an exercise
  price less than 100% of the fair market value of the Common Stock at the
  option grant date.
 
    (b) Option Term. The term of each stock option shall be fixed by the
  Committee, but no incentive stock option shall be exercisable more than ten
  years after the date the option is granted.
 
    (c) Exercisability. Stock options shall be exercisable at such time or
  times and subject to such terms and conditions as shall be determined by
  the Committee.
 
    (d) Method of Exercise. An option may be exercised (i) by giving written
  notice to the Company specifying the number of whole shares of Common Stock
  to be purchased with the purchase price therefor to be payable in full
  either (A) in cash, (B) in previously owned whole shares of Common Stock
  (for which the holder of the option has good title free and clear of all
  liens and encumbrances) with their fair market value determined as of the
  date of exercise, (C) by authorizing the Company to retain whole shares of
  Common Stock which would otherwise be issuable upon exercise of the option
  with their fair market value determined as of the date of exercise, (D) in
  cash by a broker-dealer acceptable to the Company to whom the optionee has
  submitted an irrevocable notice of exercise, or (E) a combination of (A),
  (B) and (C), in each case to the extent determined by the Committee at the
  time of grant of the option, (ii) if applicable, by surrendering to the
  Company any stock appreciation rights or other Awards which are cancelled
  by reason of the exercise of the option and (iii) by executing such
  documents as the Company may reasonably request. No shares of Common Stock
  shall be issued until the full purchase price has been paid.
 
    (e) Termination of Employment by Death, Disability or Retirement. If a
  Participant's employment by the Company or a Subsidiary terminates by
  reason of the Participant's death, disability (as determined by the
  Committee) or retirement (as determined by the Committee), any outstanding
  stock option then held by such Participant shall remain exercisable, but
  only to the extent such option was exercisable on the date of such
  Participant's termination of employment, until the expiration of the term
  of such option. If on the date of such termination of employment, any such
  stock option shall not be fully exercisable, the Committee shall have the
  discretion to cause such stock option to continue to become exercisable on
  the date or dates specified therein as if such termination of employment
  had not occurred. The Committee may exercise the discretion granted to it
  by the preceding sentence at the time a stock option is granted or at any
  time thereafter while such stock option remains outstanding.
 
    (f) Other Termination of Employment. Unless otherwise determined by the
  Committee at or after grant, if a Participant's employment by the Company
  or a Subsidiary terminates for any reason other than the Participant's
  death, disability or retirement, the stock option shall terminate at such
  time as provided in the Award.
 
    (g) Buyout and Settlement Provisions. The Committee may at any time offer
  to buy out an option previously granted, based on such terms and conditions
  as the Committee shall establish and communicate to the Participant at the
  time that such offer is made.
 
    (h) Maximum Share Grant. The maximum number of shares that may be granted
  to a Participant in any particular five-year period shall not exceed
  500,000.
 
                    ARTICLE VII: STOCK APPRECIATION RIGHTS
 
  The Committee may grant stock appreciation rights to employees either alone
or in addition to stock options granted under Article VI. A stock appreciation
right shall entitle the holder thereof to receive upon exercise shares of
Common Stock, cash or a combination thereof with an aggregate value equal to
the excess of the fair market value of one share of Common Stock over the
reference
 
                                      A-4
<PAGE>
 
price of such stock appreciation right multiplied by the number of shares of
Common Stock subject to such stock appreciation right or portion thereof which
is exercised. Any stock appreciation right related to a non-qualified stock
option may be granted at the same time such option is granted or at any time
thereafter before exercise or expiration of such option. Any stock
appreciation right related to an incentive stock option shall be granted at
the same time such option is granted. In the case of any stock appreciation
right related to any option, the stock appreciation right or applicable
portion thereof shall terminate and no longer be exercisable upon the
termination or exercise of the related option, except that a stock
appreciation right granted with respect to less than the full number of shares
covered by a related option shall not be reduced until the exercise or
termination of the related option exceeds the number of shares not covered by
the stock appreciation right at the time of grant. Any option related to any
stock appreciation right shall no longer be exercisable to the extent the
related stock appreciation right has been exercised. The Committee may impose
such conditions or restrictions on the exercise of any stock appreciation
right as it shall deem appropriate. The maximum number of shares that may be
subject to stock appreciation rights granted to a Participant in any
particular five-year period shall not exceed 500,000.
 
                          ARTICLE VIII: STOCK AWARDS
 
  Restricted or unrestricted shares of Common Stock may be granted either
alone or in addition to other Awards granted under this Plan. The Committee
may grant Awards of Common Stock subject to the attainment of specified
performance goals, continued employment and such other limitations or
restrictions as the Committee may determine.
 
                        ARTICLE IX: PERFORMANCE SHARES
 
  Performance shares may be awarded either alone or in addition to other
Awards granted under this Plan and shall consist of the right to receive
Common Stock or cash of an equivalent value at the end of a specified
performance period. The Committee shall determine the employees to whom and
the time or times at which performance shares shall be awarded, the number of
performance shares to be awarded to any person, the duration of the period
during which, and the conditions under which, a Participant's rights to
performance shares will be vested and the receipt of the shares will be
deferred.
 
  The Committee may condition the grant of performance shares upon the
attainment of specified performance goals or such other factors or criteria as
the Committee shall determine.
 
                         ARTICLE X: PERFORMANCE UNITS
 
  Performance units may be awarded either alone or in addition to other Awards
granted under this Plan and shall consist of the right to receive a fixed
dollar amount, payable in cash or Common Stock or a combination of both. The
Committee shall determine the employees to whom and the time or times at which
performance units shall be awarded, the number of performance units to be
awarded to any person, the duration of the period during which, and the
conditions under which, a Participant's right to performance units will be
vested and the ability of Participants to defer the receipt of payment of such
performance units. The maximum number of performance units that may be granted
to a Participant in any one-year period shall not exceed 50,000.
 
  The Committee may condition the vesting of performance units upon the
attainment of specified performance goals or such other factors or criteria as
the Committee shall determine.
 
                                      A-5
<PAGE>
 
                     ARTICLE XI: OTHER STOCK-BASED AWARDS
 
  Other awards of Common Stock and cash awards that are valued in whole or in
part by reference to, or are payable in or otherwise based on, Common Stock
("other stock-based awards") including, without limitation, Awards valued by
reference to performance concepts, may be granted either alone or in addition
to or in tandem with stock options, stock appreciation rights, stock awards,
performance shares or performance units.
 
  Subject to the provisions of this Plan, the Committee shall have authority
to determine the persons to whom and the time or times at which such Awards
shall be made, the number of shares of Common Stock to be awarded pursuant to
such Awards, and all other conditions of such Awards.
 
                     ARTICLE XII: TERMINATION OR AMENDMENT
 
  Notwithstanding any other provision of this Plan, the Board may at any time,
and from time to time, amend, in whole or in part, any or all of the
provisions of this Plan, or suspend or terminate it entirely; provided,
however, that, unless otherwise required by law, the rights of a Participant
with respect to any Awards granted prior to such amendment, suspension or
termination, may not be impaired without the consent of such Participant; and,
provided further, no amendment may be made which would cause this Plan to lose
its exemption under Securities and Exchange Commission Regulation 240.16b-3 or
which would increase the number of shares of Common Stock available for Awards
under Section 4.1 of the Plan without shareholder approval.
 
                       ARTICLE XIII: GENERAL PROVISIONS
 
  13.1 Unfunded Status of Plan. This Plan is intended to be unfunded. With
respect to any payments as to which a Participant has a fixed and vested
interest but which are not yet made to a Participant by the Company, nothing
contained herein shall give any such Participant any rights that are greater
than those of a general creditor of the Company.
 
  13.2 No Right to Employment. Neither this Plan nor the grant of any Award
hereunder shall give any Participant or other employee any right with respect
to continuance of employment by the Company or any Subsidiary, nor shall they
be a limitation in any way on the right of the Company or any Subsidiary by
which an employee is employed to terminate his or her employment at any time.
 
  13.3 Other Plans. In no event shall the value of, or income arising from,
any Awards under this Plan be treated as compensation for purposes of any
pension, profit sharing, life insurance, disability or any other retirement or
welfare benefit plan now maintained or hereafter adopted by the Company or any
Subsidiary, unless such plan specifically provides to the contrary.
 
  13.4 Withholding of Taxes. The Company shall have the right to require,
prior to the issuance or delivery of any shares of Common Stock hereunder,
payment by the Participant of any federal, state, local or other taxes which
may be required to be withheld or paid in connection with an Award hereunder.
An Award agreement may provide that (i) the number of shares of Common Stock
issuable with respect to such Award shall be reduced by the amount necessary
to satisfy any such obligation or (ii) the Participant may satisfy any such
obligation by any of the following means: (A) a cash payment to the Company,
(B) delivery to the Company of previously owned whole shares of Common Stock
(for which the Participant has good title, free and clear of all liens and
encumbrances) having a fair market value determined as of the date the
obligation to withhold or pay taxes first arises in connection with an Award
(the "Tax Date"), (C) authorizing the Company to withhold from the shares of
Common Stock otherwise issuable to the Participant pursuant to an Award, a
number of
 
                                      A-6
<PAGE>
 
whole shares of Common Stock having a fair market value determined as of the
Tax Date or (D) any combination of the foregoing methods; provided, however,
that in the case of a Participant who is subject to Section 16 of the
Securities Exchange Act of 1934, as amended, the Company may require that the
method of satisfying such an obligation shall be in compliance with Section 16
and the rules and regulations thereunder. An Award agreement may not provide
for shares of Common Stock to be delivered or withheld having a fair market
value in excess of the amount determined by applying the Participant's maximum
marginal tax rate. Any fraction of a share of Common Stock which would be
required to satisfy such an obligation shall be disregarded and the remaining
amount due shall be paid in cash by the Participant. The Company may require
that any or all obligations to satisfy or pay taxes with respect to any Award
shall be satisfied or paid by the Participant prior to satisfaction of such
Award by the Company.
 
  13.5 No Assignment of Benefits. No Award or other benefit payable under this
Plan shall, except as otherwise specifically provided by this Plan or by law,
be transferable in any manner other than by will or the laws of descent and
distribution, and any attempt to transfer any such benefit shall be void. All
stock options, stock appreciation rights and performance shares may be
exercised or settled during the Participant's lifetime, only by the
Participant or his or her guardian, conservator or other legal representative.
Awards or other benefits payable under this Plan shall not in any manner be
subject to the debts, contracts, liabilities, engagements or torts of any
person who shall be entitled to such benefit, nor shall it be subject to
attachment or legal process for or against such person.
 
  13.6 Governing Law. This Plan and actions taken in connection herewith shall
be governed and construed in accordance with the laws of the State of Illinois
(without regard to applicable Illinois principles of conflict of laws).
 
  13.7 Construction. Wherever any words are used in this Plan in the masculine
gender, they shall be construed as though they were also used in the feminine
gender in all cases where they would so apply, and wherever any words are used
herein in the singular form, they shall be construed as though they were also
used in the plural form in all cases where they would so apply.
 
                          ARTICLE XIV: EFFECTIVE DATE
 
  This Plan, formerly the Commonwealth Edison Company 1993 Long-Term Incentive
Plan, which was assumed, adopted and amended by the Board on August 30, 1994
and approved by the shareholder of the Company on August 30, 1994, is
effective September 1, 1994.
 
                                      A-7
<PAGE>
 
                                                                      EXHIBIT B
 
                              UNICOM CORPORATION
                         EMPLOYEE STOCK PURCHASE PLAN
 
1. RESERVATION OF STOCK.
 
  To facilitate the purchase of stock by employees, there is hereby reserved
for sale under the Unicom Corporation Employee Stock Purchase Plan (the
"Plan"), 1,007,567 shares of Common Stock, without par value, of Unicom
Corporation (the "Company"). In the event there is any increase in the number
of issued shares of Common Stock of the Company by reason of stock dividends
or stock split-ups, the number of shares then remaining for issue under the
Plan shall, in each such event, be increased in proportion to the increase in
issued shares of the Company resulting from stock dividend or stock split-up.
 
2. ELIGIBILITY.
 
  Employees of the Company, and of such subsidiaries of the Company as its
Board of Directors (the "Board") may designate, shall be eligible to
participate in the Plan, provided that (i) no employee shall be eligible who,
immediately after any option is granted, owns stock possessing 5% or more of
the total combined voting power or value of all classes of stock of the
Company or of any subsidiary of the Company, (ii) no Director of the Company
or of any such subsidiary, who is not an officer or other employee of any
thereof, shall participate in the Plan, and (iii) the Board may exclude:
 
  (a) employees whose customary employment is less than 20 hours per week,
  and
 
  (b) employees whose customary employment is for not more than five months
  in any calendar year.
 
3. METHOD OF PURCHASE.
 
  (a) An employee shall become a participant only by authorizing payroll
  deductions to be made during such six-month periods as the Board may
  establish for the convenient accumulation of funds necessary for the
  payment of the purchase price of the stock that may be purchased under the
  Plan. Such payroll deductions shall be any full percentage of the base pay
  of the participant, or any specified even dollar amount, up to but not more
  than 10% of base pay, in either case.
 
  (b) On designated dates (the "Price Dates"), which shall be within the last
  month of each six-month payment period, a participant shall become eligible
  to purchase such number of shares (including fractions of shares, computed
  to three decimal places) as his or her accumulated payroll deductions
  during the payment period will purchase, at a price equal to 90% of the
  closing market price per share of the stock on the Chicago Stock Exchange
  on the Price Date (or in the absence of such a market price within the last
  month of the payment period, the price for stock purchasable therein shall
  be equal to 90% of the fair market value per share of the stock determined
  by the Board as of a specified Price Date within such month).
 
  (c) No employee shall have the right to purchase stock under the Plan at a
  rate of more than $25,000 in value thereof in any calendar year, such value
  to be based on the fair market value per share of the stock as of Price
  Dates on which a participant becomes eligible to purchase stock in such
  year under the terms of the Plan.
 
  (d) A participant shall be deemed to have elected to purchase the shares
  which he became entitled to purchase on the Price Date for each payment
  period, unless he shall notify the Company to the contrary by such date
  between such Price Date and the end of such payment
 
                                      B-1
<PAGE>
 
  period, as the Board may establish. Until the Price Date, a participant
  shall have no option or other right to purchase any stock under the Plan,
  and the Board may at any time prior thereto terminate the Plan without any
  obligation whatsoever, other than refunding to the employee any sum
  accumulated for him by payroll deduction, without interest.
 
4. NONASSIGNABILITY.
 
  The option granted on the Price Date to purchase stock under the Plan shall
be nonassignable. Any purported assignment or transfer of such option,
voluntary or involuntary, shall be deemed to be an election not to exercise
such right to purchase stock, and any sum accumulated at the time of such
purported assignment or transfer shall be refunded. Similarly, all sums
accumulated at the time of any termination of employment for any reason,
including death, shall be refunded.
 
5. ADMINISTRATION.
 
  (a) Subject to direction of the Board, the Secretary of the Company shall
  administer the Plan and make such interpretations and regulations as he
  deems desirable or necessary in connection with its operation.
 
  (b) The Board may at any time interpret, amend, suspend, or terminate the
  Plan except that (i) the number of shares reserved under the Plan may not
  be changed by the Board, and (ii) the terms of this Plan governing
  determinations of the purchase prices for purchase of stock hereunder may
  be changed by the Board only to conform such terms with any then applicable
  provision of the Internal Revenue Code or any Regulation issued hereunder.
 
6. APPLICABLE LAW AND REGULATIONS.
 
  (a) It is intended that this Plan and all rights granted hereunder will
  meet the requirements of an "employee stock purchase plan" under the
  Internal Revenue Code or other applicable provisions, as they may be
  amended from time to time. The Plan, in all respects, shall be so
  interpreted and construed as to be consistent with this purpose.
 
  (b) Sales of shares under the Plan shall be subject to compliance with
  requirements of all applicable securities and other laws.
 
7. TERMINATION.
 
  Unless previously terminated by the Board, the Plan will terminate
automatically at the end of the second full calendar month following any six-
month payment period if, as of such month-end, the total number of shares
reserved for subsequent sale pursuant to the Plan shall be less than one-third
of the total number of shares purchased on the Price Date for the last
preceding payment period within which shares were sold under the Plan.
 
                                      B-2
<PAGE>
 
                                                                      EXHIBIT C
 
 
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                       CONSOLIDATED FINANCIAL STATEMENTS
 
                       AS OF DECEMBER 31, 1997 AND 1996
 
 
 
 
 
 
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
FORWARD-LOOKING INFORMATION
 
  Except for historical data, the information contained herein constitutes
forward-looking statements. Forward-looking statements are inherently
uncertain and subject to risks. Such statements should be viewed with caution.
Actual results or experience could differ materially from the forward-looking
statements as a result of many factors. Forward-looking statements in this
report include, but are not limited to: (1) statements regarding expectations
of revenue reductions as a result of the 1997 Act in "Management's Discussion
and Analysis of Financial Condition and Results of Operations," subcaption
"Changes in the Electric Utility Industry" and in Note 2 of Notes to Financial
Statements, (2) statements regarding estimated capital expenditures in
"Management's Discussion and Analysis of Financial Condition and Results of
Operations," subcaptions "Liquidity and Capital Resources--Construction
Program," (3) statements regarding the estimated return to service of certain
nuclear generating units and the costs of purchased power in "Management's
Discussion and Analysis of Financial Condition and Results of Operations,"
subcaption "Regulation--Nuclear Matters," and "Management's Discussion and
Analysis of Financial Condition and Results of Operations," subcaption
"Results of Operations--Purchased Power," (4) statements regarding the costs
of decommissioning nuclear generating stations in "Management's Discussion and
Analysis of Financial Condition and Results of Operations," subcaption
"Regulation--Nuclear Matters" and in Note 1 of Notes to Financial Statements,
under "Depreciation and Decommissioning", and (5) statements regarding cleanup
costs associated with MGPs and other remediation sites in Note 23 of Notes to
Financial Statements. Management cannot predict the course of future events or
anticipate the interaction of multiple factors beyond management's control and
their effect on revenues, project timing and costs. The statements regarding
revenue reductions are subject to unforeseen developments in the market for
electricity in Illinois resulting from regulatory changes. The statements
regarding estimated capital expenditures, estimated return to service of
nuclear generation units, decommissioning costs and cleanup costs are subject
to changes in the scope of work and manner in which the work is performed and
consequent changes in the timing and level of the projected expenditure, and
are also subject to changes in laws and regulations or their interpretation or
enforcement. Unicom and ComEd make no commitment to disclose any revisions to
the forward-looking statements, or any facts, events or circumstances after
the date hereof that may bear upon forward-looking statements. The statements
regarding the estimated return to service of nuclear generating units are
subject to the concurrence of the NRC with proceeding to power operations.
 
                                     INDEX
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Definitions...............................................................   C-2
Summary of Selected Consolidated Financial Data...........................   C-3
Cash Dividends Paid Per Share of Common Stock.............................   C-3
1997 Consolidated Revenues and Sales......................................   C-3
Management's Discussion and Analysis of Financial Condition and Results of
 Operations...............................................................   C-4
Report of Independent Public Accountants..................................  C-20
Consolidated Financial Statements--
  Statements of Consolidated Operations for the years 1997, 1996 and 1995.  C-21
  Consolidated Balance Sheets--December 31, 1997 and 1996.................  C-22
  Statements of Consolidated Capitalization--December 31, 1997 and 1996...  C-24
  Statements of Consolidated Retained Earnings (Deficit) for the years
   1997, 1996 and 1995....................................................  C-25
  Statements of Consolidated Cash Flows for the years 1997, 1996 and 1995.  C-26
  Notes to Financial Statements...........................................  C-27
</TABLE>
 
                                      C-1
<PAGE>
 
                                  DEFINITIONS
 
  The following terms are used in this document with the following meanings:
 
<TABLE>
<CAPTION>
       TERM                                      MEANING
- ------------------  ------------------------------------------------------------------
<S>                 <C>
1997 Act            The Illinois Electric Service Customer Choice and Rate Relief Law
                     of 1997
AFUDC               Allowance for funds used during construction
APB                 Accounting Principles Board
CERCLA              Comprehensive Environmental Response, Compensation and Liability
                     Act of 1980, as amended
ComEd               Commonwealth Edison Company
Cotter              Cotter Corporation, a ComEd subsidiary
CTC                 Non-bypassable "competitive transition charge"
DOE                 U.S. Department of Energy
EPS                 Earnings per Share
ESPP                Employee Stock Purchase Plan
FAC                 Fuel adjustment clause
FASB                Financial Accounting Standards Board
FERC                Federal Energy Regulatory Commission
FERC Order          FERC Open Access Order No. 888 issued in April 1996
GAAP                Generally Accepted Accounting Principles
ICC                 Illinois Commerce Commission
Indiana Company     Commonwealth Edison Company of Indiana, Inc., a ComEd subsidiary
ISO                 Independent System Operator
MGP                 Manufactured gas plant
NEIL                Nuclear Electric Insurance Limited
NERC                North American Electric Reliability Council
NML                 Nuclear Mutual Limited
NRC                 Nuclear Regulatory Commission
O&M                 Operation and maintenance
Rate Order          ICC rate order issued in January 1995, as subsequently modified
Remand Order        ICC rate order issued in January 1993, as subsequently modified
SEC                 Securities and Exchange Commission
SFAS                Statement of Financial Accounting Standards
S&P                 Standard & Poor's
Trusts              ComEd Financing I and ComEd Financing II, ComEd subsidiaries
Trust Securities    Company-obligated mandatorily redeemable preferred securities of
                     subsidiary trusts holding solely the Company's subordinated debt
                     securities
Unicom              Unicom Corporation
Unicom Enterprises  Unicom Enterprises Inc., a Unicom subsidiary
U.S. EPA            U.S. Environmental Protection Agency
</TABLE>
 
                                      C-2
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
SUMMARY OF SELECTED CONSOLIDATED FINANCIAL DATA
 
<TABLE>
<CAPTION>
                             1997        1996    1995       1994       1993
                            -------     ------- -------    -------    -------
                               (MILLIONS EXCEPT PER SHARE DATA)
<S>                         <C>         <C>     <C>        <C>        <C>
Electric operating
 revenues.................  $ 7,073     $ 6,935 $ 6,910    $ 6,278    $ 5,260
Net income (loss).........  $  (774)(1) $   743 $   717(2) $   424    $   112(4)
Net income (loss) on
 common stock.............  $  (834)(1) $   679 $   647(2) $   359    $    46(4)
Cash dividends declared
 per common share.........  $  1.60     $  1.60 $  1.60    $  1.60(3) $  1.60
Total assets (at end of
 year)....................  $22,458     $23,217 $23,119    $23,076    $24,380
Long-term obligations at
 end of year excluding
 current portion:
 Long-term debt,
  preference stock and
  preferred securities
  subject to mandatory
  redemption requirements.  $ 6,087     $ 6,376 $ 6,950    $ 7,745    $ 7,861
 Accrued spent nuclear
  fuel disposal fee and
  related interest........  $   693     $   657 $   624    $   590    $   567
 Capital lease
  obligations.............  $   438     $   475 $   374    $   431    $   321
 Other long-term
  obligations.............  $ 3,177     $ 1,983 $ 1,819    $ 1,754    $ 1,718
</TABLE>
- --------
(1) Includes an extraordinary loss for the write-off of generation-related net
    regulatory assets of $810 million (after-tax), the loss on the early
    retirement of Zion nuclear generating station of $523 million (after-tax),
    and the positive impact of a cumulative effect of a change in accounting
    principle for revenue recognition of $197 million (after-tax).
(2) Includes an extraordinary loss related to the early redemption of long-
    term debt of $20 million (after-tax).
(3) Excludes a special dividend (consisting of $40 million cash and the common
    stock of Unicom Enterprises) effected on September 1, 1994 in connection
    with the holding company corporate restructuring.
(4) Includes the positive impact of a cumulative effect of a change in
    accounting for income taxes of $10 million (after-tax).
 
CASH DIVIDENDS PAID PER SHARE OF COMMON STOCK
 
<TABLE>
<CAPTION>
                                1997 (BY QUARTERS)        1996 (BY QUARTERS)
                             ------------------------- -------------------------
                             FOURTH THIRD SECOND FIRST FOURTH THIRD SECOND FIRST
                             ------ ----- ------ ----- ------ ----- ------ -----
<S>                          <C>    <C>   <C>    <C>   <C>    <C>   <C>    <C>
Cash dividends paid.........  40c    40c   40c    40c   40c    40c   40c    40c
</TABLE>
 
1997 CONSOLIDATED REVENUES AND SALES
 
<TABLE>
<CAPTION>
                          ELECTRIC       %                      %
                          OPERATING   INCREASE KILOWATTHOUR INCREASE/                %
                          REVENUES      OVER      SALES     (DECREASE)           INCREASE
                         (THOUSANDS)    1996    (MILLIONS)  OVER 1996  CUSTOMERS OVER 1996
                         -----------  -------- ------------ ---------- --------- ---------
<S>                      <C>          <C>      <C>          <C>        <C>       <C>
Residential............. $2,552,742      0.4%     22,151       (0.7)%  3,123,364    0.7%
Small commercial and
 industrial.............  2,153,113      1.9      25,860        2.9      291,143    0.5
Large commercial and
 industrial.............  1,467,574      1.5      24,074        0.7        1,566    1.0
Public authorities......    505,907      0.6       7,322       (0.2)      12,180    0.3
Electric railroads......     29,785      0.5         418       (1.4)           2     --
                         ----------               ------               ---------
Ultimate consumers...... $6,709,121      1.1      79,825        0.9    3,428,255    0.7
Provision for revenue
 refunds................    (45,470)   100.0          --         --           --     --
                         ----------               ------               ---------
Net ultimate consumers.. $6,663,651      0.4      79,825        0.9    3,428,255    0.7
Sales for resale........    336,480     43.2      15,679       28.7           51   15.9
Other revenues..........     72,957     11.3          --         --           --     --
                         ----------               ------               ---------
 Total.................. $7,073,088      2.0      95,504        4.6    3,428,306    0.7
                         ==========               ======               =========
</TABLE>
 
                                      C-3
<PAGE>
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
CHANGES IN THE ELECTRIC UTILITY INDUSTRY
 
  Unicom and its predominant business, electric energy generation,
transmission and distribution, are in a period of fundamental change in the
manner in which customers obtain, and energy suppliers provide, energy
services. These changes are attributable to changes in technology, the
relaxation of regulatory barriers to utilities' respective service territories
as well as efforts to change the manner in which electric utilities are
regulated. Federal law and regulations have been amended to provide for open
transmission system access, and various states are considering, or have
adopted, new regulatory structures to allow access by some or all customers to
energy suppliers in addition to the local utility.
 
  Electric Utility Industry. The electric utility industry has historically
consisted of vertically integrated companies which combine generation,
transmission and distribution assets; serve customers within relatively
defined service territories; and operate under extensive regulation with
respect to rates, operations and other matters. Utilities have operated under
a regulatory compact with the state, with a statutory obligation to serve all
of the electricity needs within their service territory in a nondiscriminatory
manner. Historically, investment and operating decisions have been made based
upon the utilities' respective assessment of the current and projected needs
of their customers. In view of this obligation, regulation has focused on
investment and operating costs, and rates have been based on a recovery of
some or all of such prudently incurred costs plus a return on invested
capital. Such rate regulation, and the ability of utilities to recover
investment and other costs through rates, have provided the basis for
recording certain costs as regulatory assets. These assets represent costs
which are allocated over future periods reflecting related regulatory
treatment, rather than expensed in the current period.
 
  The 1997 Act. On December 16, 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, as it applies to ComEd, provides for, among other things, a 15%
residential base rate reduction commencing August 1, 1998, an additional 5%
residential base rate reduction commencing May 1, 2002, and customer access to
other electric suppliers in a phased-in process. Access for commercial and
industrial customers will occur over a period from October 1999 to December
2000, and access for residential customers will occur after May 1, 2002. The
15% residential base rate reduction, commencing on August 1, 1998, is expected
to reduce ComEd's operating revenues by approximately $160 million and $375
million in 1998 and 1999, respectively, compared to 1997 rate levels. ComEd is
engaged in certain pricing experiments contemplated by the 1997 Act, which are
expected to reduce ComEd's operating revenues by approximately $30 million and
$60 million in 1998 and 1999, respectively, compared to 1997 rate levels,
notwithstanding the effects of customer growth.
 
  The 1997 Act also provides for the collection of a CTC from customers who
choose another electric service provider during a transition period that
extends through 2006, and can be extended through 2008 with ICC approval if
certain factors are met. The CTC will be established in accordance with a
formula defined in the 1997 Act. The CTC, which will be applied on a cents per
kilowatthour basis, considers the revenue which would have been collected from
a customer under tariffed rates, reduced by 1) the revenue the utility will
receive for providing delivery services to the customer, 2) the market price
for electricity and 3) a defined mitigation factor which represents the
utility's opportunity to develop new revenue sources and achieve costs
savings.
 
  Notwithstanding these 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
 
                                      C-4
<PAGE>
 
assets with limited ICC authority. 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, a portion of the excess earnings must be
refunded to customers. A utility may request a rate increase during the rate
freeze period when necessary to ensure the utility's financial viability, but
not before January 1, 2000.
 
  Under 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 an alternative energy supplier 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 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 option to eliminate the FAC, 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.
 
  The 1997 Act also allows ComEd to unbundle a portion of its future revenues,
including tariffed and contract rates and CTC revenues, and issue securities
backed by these revenues. The proceeds from such security issuances must
generally be used to refinance outstanding debt or equity or for certain other
limited purposes. The total amount of ComEd's revenues securitized cannot
exceed $6.5 billion; approximately one-half of that amount can be issued in
the twelve-month period commencing on August 1, 1998.
 
  As a result of the 1997 Act, prices for the supply of electric generation
are expected to transition from cost-based, regulated rates to rates
determined by competitive market forces. The CTC allows ComEd to recover a
portion of any 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
include costs control efforts and developing new sources of revenue.
 
  Accounting Effects Related to the 1997 Act. ComEd's financial statements
reflect the application of SFAS No. 71, Accounting for the Effects of Certain
Types of Regulation. This statement allows ComEd to record certain regulatory
assets and liabilities, which are expected to be recovered or settled in
future rates and would not be recorded under GAAP for non-regulated entities.
 
  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 is not probable that
such costs will 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 a
charge of $810 million (after-tax). These costs relate principally to
previously incurred costs originally expected to be collected through future
revenues, including income tax benefits previously flowed through to
customers, deferred carrying charges on Byron Unit 2 and Braidwood Units 1 and
2 nuclear generating plants, generation-related unamortized loss on reacquired
debt and other miscellaneous generation-related costs. The regulatory asset
for the unrecovered nuclear decommissioning costs of currently retired nuclear
plants was not written off, as the 1997 Act provides for the ongoing recovery
of decommissioning costs through regulated rates. See "Regulatory Assets and
Liabilities" and "Depreciation and Decommissioning" in Note 1 of Notes to
Financial Statements.
 
  In addition, ComEd has evaluated whether the recoverability of the costs of
its generating stations has been impaired as defined in SFAS No. 121,
Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets
to Be Disposed Of. This evaluation was conducted to determine whether future
revenues expected to be recovered from electric supply services will be
sufficient to
 
                                      C-5
<PAGE>
 
cover the costs of its generating assets. Notwithstanding the retirement and
write-off of Zion Station, as discussed below, ComEd has concluded, as a
result of these studies, that impairment, as defined in SFAS No. 121, does not
currently exist and that asset write downs are not necessary at this time.
However, ComEd is engaged in an ongoing examination of its assets and
operations. If ComEd retires or closes one or more additional generating
plants prior to expected retirement dates, further write-offs will be
required.
 
  Pursuant to an option contained in the 1997 Act, ComEd filed a tariff on
December 16, 1997 to eliminate its FAC as of January 1, 1997. Under ComEd's
current regulated rates, the FAC provided for the recovery of changes in
fossil and nuclear fuel costs and the energy portion of purchased power costs
as compared to the fuel and purchased energy costs included in ComEd's base
rates. Elimination of the FAC requires ComEd to refund to customers any net
FAC charges billed from January 1, 1997 through December 31, 1997. Such FAC
charges were $25 million (after-tax). These costs, as well as deferred
underrecovered energy costs of $19 million (after-tax) which ComEd would have
been entitled to recover if the FAC had remained in effect, were recorded as a
reduction to operating results in 1997. Additionally, the elimination of the
FAC and a transition to market-based pricing for generation-related costs
required ComEd to write down its investment in uranium-related properties.
Current projections of the market price for uranium indicate that the expected
incremental costs of mining and milling uranium at such properties will exceed
the expected market price for uranium. Such costs are not expected to be
recoverable in a competitive market. A write down of ComEd's investment in
uranium-related properties to realizable value resulted in a charge in
December 1997 of $60 million (after-tax).
 
  Federal Regulation. The Federal Energy Policy Act of 1992, among other
things, empowered FERC to introduce a greater level of competition into the
wholesale marketplace for electric energy. In April 1996, the FERC Order was
issued requiring utilities to file open access tariffs with regard to their
transmission systems. These tariffs set forth the terms, including prices,
under which other parties and the utility's wholesale marketing function may
use the utility's transmission system. ComEd has an approved open access
tariff with the FERC. The FERC Order requires the separation of the
transmission operations and wholesale marketing functions so as to ensure that
unaffiliated third parties have access to the same information as to system
availability and other requirements. The FERC Order further requires utilities
to operate an electronic bulletin board to make transmission price and access
data available to all potential users. A key feature of the FERC Order is that
it contemplates full recovery of a utility's costs "stranded" by competition.
These costs are "stranded" or "strandable" to the extent market-based rates
would be insufficient to allow for their full recovery. To recover stranded
costs, the utility must show that it had a reasonable expectation that it
would continue to serve the customer in question under its regulatory compact.
In addition, some governmental entities, such as cities, may elect to
"municipalize" a utility's distribution facilities through condemnation
proceedings. Such municipalities would then be able to purchase electric power
on a wholesale basis and resell it to customers over the newly acquired
facilities. The FERC Order provides for the recovery of a utility's investment
stranded by municipalization.
 
  ComEd's Response to Regulatory Changes. ComEd is responding, and is
undertaking a significant planning effort to respond further, to the
developments within the utility industry and the 1997 Act and its potential
for strandable investment. During the past several years, such efforts have
focused on cost reductions, including personnel reductions, efficiencies in
purchasing and inventory management, and an incentive compensation system
keyed to cost control and improvement in shareholder value. Notwithstanding
these efforts, ComEd's costs remain high in comparison to its neighboring
utilities. Although ComEd's operating results and financial condition have
historically been affected by various rate proceedings, ComEd expects that the
changes in the national and Illinois electric energy marketplace, and ComEd's
activities anticipating or responding to them, will directly impact its
operating results and financial condition over the next several years.
 
                                      C-6
<PAGE>
 
  ComEd anticipates that the 1997 Act, and the resultant increasing
competition to supply energy in Illinois and elsewhere, will have significant
effects upon its revenues and assets as it takes steps to adjust its
operations and services to meet the changing market for electric energy. ComEd
has been examining methods of positioning itself and its affiliates to deal
with those effects and to address the developing opportunities and challenges.
ComEd has been engaged in a broad-based examination of its assets and
operations, particularly nuclear and fossil generation and generation-related
(i.e., fuel and inventory) assets, with a view toward rationalizing their
investment and operating costs against their ability to contribute to the
revenues of ComEd under various market scenarios. Such an assessment involves
the consideration of numerous factors, including revenue contribution,
operating costs, impacts on ComEd's service obligations, purchase commitments
and the impact of various options. Such options include continued operation
with accelerated depreciation, indefinite suspension from operation, sale to a
third party and retirement or closure. As discussed below, ComEd recently
ceased nuclear generation operations and retired facilities at its Zion
Station. If ComEd retired or closed one or more additional generating plants,
particularly a nuclear plant, such retirement would have a material impact on
Unicom and ComEd's financial position and results of operations.
 
  On January 14, 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 for 1997 of $523 million (after-tax). The
decision to close Zion Station was a result of an ongoing analysis, which
ComEd performed regarding the economic value of its generating assets in light
of the expected changes in the manner in which electric energy is marketed and
sold. The passage of the 1997 Act provided a clearer basis for evaluating the
costs and benefits of alternative courses of action. In reaching the decision
to cease nuclear generation operations at Zion Station, the Boards also
considered the significant uncertainty associated with continued operation of
the station due to the degradation of the steam generators, and the expected
operating costs associated with continued station operation.
 
  Notwithstanding the closure of Zion Station as a nuclear generating
facility, a portion of the station will continue to be used to provide voltage
support in the transmission system that serves ComEd's northern region. Such
support will require capital expenditures at the station as well as upgrades
to the transmission system at various points, in order to improve the ability
to import and transport power through the system. See Note 5 of Notes to
Financial Statements for additional information.
 
  In April 1996, ComEd announced that it had finalized agreements to sell two
of its coal-fired generating stations, representing 1,600 megawatts of
generating capacity. Under the agreements, State Line and Kincaid stations are
expected to be sold for a total of $250 million, which approximates the book
value of the stations. The net proceeds are expected to be approximately $200
million (after-tax), which will be used to retire or redeem existing debt.
Under the terms of the sales, ComEd will enter into exclusive 15-year
purchased power agreements for the output of the plants. On March 31, 1997,
the ICC issued an order approving the agreements. A subsequent appeal has been
dropped by the intervening parties. The sale of State Line Station for its
approximate book value was finalized in December 1997. The net proceeds of the
sale, after income tax effects and closing costs, were approximately $56
million. The Kincaid Station sale is expected to be finalized during the first
quarter of 1998.
 
  ComEd joined with eight Midwestern utilities in the formation of a regional
Midwest ISO in January 1998. The Midwest ISO is a key element in accommodating
the restructuring of the electric industry and will promote enhanced
reliability of the transmission system, equal access to the transmission
system and increased competition. The Midwest ISO will establish an
independent body that will ultimately take over direction of the management of
the transmission system for the utilities involved. ComEd will retain
ownership of its transmission lines. The formation of the Midwest ISO is
subject to FERC approval.
 
                                      C-7
<PAGE>
 
LIQUIDITY AND CAPITAL RESOURCES
 
  Construction Program. ComEd has a construction program for the year 1998,
which consists principally of improvements to its existing nuclear and other
electric production, transmission and distribution facilities. It does not
include funds to add new generating capacity to ComEd's system. The program,
as currently approved by ComEd, includes the following estimated expenditures
(excluding nuclear fuel expenditures of approximately $160 million):
 
<TABLE>
<CAPTION>
                                                                        1998
                                                                    ------------
                                                                    (MILLIONS OF
                                                                      DOLLARS)
   <S>                                                              <C>
   Production......................................................     $425
   Transmission and Distribution...................................      415
   General.........................................................       90
                                                                        ----
                                                                        $930
                                                                        ====
</TABLE>
 
  Such estimated expenditures include $130 million toward the replacement of
the steam generators at ComEd's Braidwood Unit 1 and Byron Unit 1 nuclear
generating units by year-end 1998. The total replacement cost is estimated to
be $455 million, of which approximately $295 million has been incurred through
December 31, 1997 and $30 million will be incurred in 1999.
 
  ComEd's forecasts of peak load indicate a need for additional resources to
meet demand, either through generating capacity, equivalent purchased power or
the development of additional demand-side management resources, in 1998 and
each year thereafter. However, ComEd believes that adequate resources,
including cost-effective demand-side management resources, non-utility
generation resources and other-utility power purchases, could be obtained in
sufficient quantities to meet such forecasted needs.
 
  Purchase commitments for ComEd, principally related to construction and
nuclear fuel, approximated $286 million at December 31, 1997. In addition,
ComEd's estimated commitments for the purchase of coal are as follows:
 
<TABLE>
<CAPTION>
      CONTRACT                                          PERIOD   COMMITMENT (1)
   --------------                                      --------- --------------
   <S>                                                 <C>       <C>
   Black Butte Coal Co................................ 1998-2000     $  679
   Decker Coal Co..................................... 1998-2014        427
   Other commitments.................................. 1998              25
                                                                     ------
                                                                     $1,131
                                                                     ======
</TABLE>
  --------
  (1) In millions of dollars, excluding transportation costs. No estimate of
      future cost escalation has been made.
 
For additional information concerning these coal contracts and ComEd's fuel
supply, see "Results of Operations" below and Notes 1 and 23 of Notes to
Financial Statements.
 
  Capital Resources. ComEd forecasts that internal sources will provide
approximately three-fourths of the funds required for ComEd's 1998
construction program and other capital requirements, including nuclear fuel
expenditures, contributions to nuclear decommissioning funds, sinking fund
obligations and refinancing of scheduled debt maturities. See Notes 10 and 12
of Notes to Financial Statements for the summaries of the annual sinking fund
requirements and scheduled maturities for ComEd preference stock and long-term
debt, respectively. The forecast takes into consideration the 1997 Act. See
"Changes in the Electric Utility Industry" above and "Regulation," subcaption
"Rate Matters" below for additional information.
 
  The type and amount of external financing will depend on financial market
conditions and the needs and capital structure of ComEd at the time of such
financing. A portion of ComEd's financing is expected to be provided through
the continued sale and leaseback of nuclear fuel through ComEd's existing
nuclear fuel lease facility. See Note 21 of Notes to Financial Statements for
 
                                      C-8
<PAGE>
 
additional information concerning ComEd's nuclear fuel lease facility. ComEd
has $758 million of unused bank lines of credit at December 31, 1997, which
may be borrowed at various interest rates and may be secured or unsecured. 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
ratings of ComEd's outstanding first mortgage bonds or on a prime interest
rate. Collateral, if required for the borrowings, would consist of first
mortgage bonds issued under and in accordance with the provisions of ComEd's
mortgage. See Note 13 of Notes to Financial Statements for additional
information concerning lines of credit. See the Statements of Consolidated
Cash Flows for the construction expenditures and cash flow from operating
activities for the years 1997, 1996 and 1995.
 
  During 1997, ComEd sold and leased back $150 million of nuclear fuel through
its existing nuclear fuel lease facility.  In 1997, ComEd issued $150 million
principal amount of 7.375% Notes due January 15, 2004, $150 million principal
amount of 7.625% Notes due January 15, 2007 and $150 million principal amount
of 8.50% Trust Securities due January 15, 2027, the proceeds of which were
used to discharge current maturities of long-term debt and to redeem $200
million principal amount of first mortgage bonds. See the Statements of
Consolidated Cash Flows and Note 7 of Notes to Financial Statements for
information regarding common stock activity.
 
  As of January 30, 1998, ComEd has an effective "shelf" registration
statement with the SEC for the future sale of up to an additional $505 million
of debt securities and cumulative preference stock for general corporate
purposes of ComEd, including the discharge or refund of other outstanding
securities.
 
  ComEd's securities and other securities guaranteed by ComEd are currently
rated by three principal securities rating agencies as follows:
 
<TABLE>
<CAPTION>
                                                                STANDARD DUFF &
                                                        MOODY'S & POOR'S PHELPS
                                                        ------- -------- ------
      <S>                                               <C>     <C>      <C>
      First mortgage and secured pollution control
       bonds...........................................  Baa2     BBB     BBB
      Publicly-held debentures and unsecured pollution
       control obligations.............................  Baa3     BBB-    BBB-
      Convertible preferred stock......................  baa3     BBB-    BBB-
      Preference stock.................................  baa3     BBB-    BBB-
      Trust Securities.................................  baa3     BBB-    BBB-
      Commercial paper.................................  P-2      A-2     D-2
</TABLE>
 
  In January 1997, Moody's changed the rating outlook on ComEd's securities
from "stable" to "negative" and Duff & Phelps added ComEd's securities to
"Rating Watch-Down." As of January 1998, S&P's rating outlook on ComEd
remained "stable."
 
  Capital Structure. The ratio of long-term debt to total capitalization has
increased to 48.5% at December 31, 1997 from 46.1% at December 31, 1996. This
increase is related primarily to the write-offs recorded in the fourth quarter
of 1997 due to the discontinuance of regulatory accounting practices for
generation-related assets and the closure of Zion Station. Also as a result of
such write-offs, ComEd's retained earnings account had a deficit balance of
$19.2 million at December 31, 1997. As of December 31, 1997, $384 million of
retained earnings had been appropriated for future dividend payments.
 
  Year 2000 Conversion. ComEd uses various software, systems and technology
throughout its businesses that will be affected by the date change in the Year
2000 and any failure to address Year 2000 issues in a timely manner could
result in a material operational or financial risk. ComEd's approach to
addressing Year 2000 compliance issues is to upgrade or remediate software,
systems and technology that are not Year 2000 compliant and that are not
otherwise being replaced in accordance with ComEd's business plans. ComEd is
in the process of replacing certain of its financial, human resources,
payroll, and customer service and billing software with new software that is
Year 2000 compliant. In other cases, ComEd is upgrading existing software to
versions that are
 
                                      C-9
<PAGE>
 
Year 2000 compliant where such upgrades are available. In cases where ComEd
has determined that it is not appropriate to replace existing software that is
not Year 2000 compliant, and that Year 2000-compliant upgrades are not
available, ComEd is remediating the software to make it Year 2000 compliant.
Accordingly, ComEd is upgrading or remediating certain software and systems in
its nuclear and fossil electricity generation business units and in its
transmission and distribution and supply management business units. ComEd is
also in the process of evaluating whether Year 2000 compliance issues will
affect any of its key suppliers. The schedule for the implementation of new
Year 2000-compliant software and upgraded versions of existing software, and
the remediation of software not being replaced or upgraded, contemplates that
such efforts will be completed by the end of 1998, except in the nuclear
generation business unit, where completion is scheduled for the third quarter
of 1999. The total cost of remediating or upgrading software, that is not
being replaced or upgraded in accordance with business plans, is currently
estimated to be approximately $20 million.
 
  Market Risks. ComEd is exposed to market risk due to changes in interest
rates and changes in the market price for electricity. Exposure for interest
rate changes relates to its long-term debt and preferred equity obligations.
Exposure to electricity market price risk relates to forward activities taken
to effectively manage the supply of, and demand for, the electric generation
capability of ComEd's generating plants. ComEd does not currently utilize
derivative commodity or financial instruments for trading or speculative
purposes.
 
  Interest Rate Exposure. The table below provides the fair value and average
interest, or fixed dividend rate, of ComEd's outstanding debt and preferred
stock equity instruments at December 31, 1997.
 
<TABLE>
<CAPTION>
                                EXPECTED MATURITY DATE                    FAIR VALUE
COMED AND SUBSIDIARY      ----------------------------------------          AS OF
COMPANIES (MILLIONS)      1998  1999  2000  2001  2002  THEREAFTER TOTAL   12/31/97
- --------------------      ----  ----  ----  ----  ----  ---------- ------ ----------
<S>                       <C>   <C>   <C>   <C>   <C>   <C>        <C>    <C>
Long-Term Debt--
 Fixed Rate.............  $353  $150  $462  $108  $305    $4,291   $5,669   $6,003
 Average Interest Rate..   6.6%  8.8%  7.2%  7.3%  7.9%      8.0%
 Variable Rate..........  $150  $ --  $ --  $ --  $ --    $  292   $  442   $  442
 Average Interest Rate..   6.5%                              3.7%
Preferred and Preference
 Stock--
 Subject to Mandatory
  Redemption............  $ 31  $ 18  $ 88  $ 18  $ 18    $   33   $  206   $  209
 Average Dividend Rate..   8.9%  8.8%  7.3%  8.8%  8.8%      8.8%
 Not Subject to Manda-
  tory Redemption.......  $ --  $ --  $ --  $ --  $ --    $  507   $  507   $  515
 Average Dividend Rate..                                     8.2%
Trust Securities........  $ --  $ --  $ --  $ --  $ --    $  350   $  350   $  372
 Average Dividend Rate..                                     8.5%
</TABLE>
 
  Market Price Exposure. In the normal course of business, ComEd utilizes
contracts for the forward sale and purchase of electricity to effectively
manage the utilization of its available generating capability. Such contracts
include forward contracts for wholesale sales of generating capability, during
periods when ComEd's available generating capability is expected to exceed the
demands of its retail, or native load, customers. Such contracts may also
include forward contracts for the purchase of generating capability during
periods when the expected market price for electricity is below ComEd's
expected incremental cost of generation. A sensitivity analysis has been
performed which concluded that the market price risk exposure of these
transactions is not material.
 
  The market price of electricity is subject to price volatility associated
with changes in supply and demand in the electric supply markets. To limit the
market price risk associated with the forward commodity contracts described in
the preceding paragraph, ComEd has utilized energy put and call option
contracts and energy swap arrangements. A sensitivity analysis has been
performed which indicates that the market price risk exposure of these
financial instruments is not material.
 
                                     C-10
<PAGE>
 
REGULATION
 
  ComEd and the Indiana Company are subject to state and federal regulation in
the conduct of their respective businesses, including the operations of
Cotter. Such regulation includes rates, securities issuance, nuclear
operations, environmental and other matters. Particularly in the cases of
nuclear operations and environmental matters, such regulation can and does
affect operational and capital expenditures.
 
  Rate Matters. In January 1995, the ICC issued its Rate Order in the
proceedings relating to ComEd's February 1994 rate increase request. The Rate
Order provided, among other things, for  an increase in ComEd's total revenues
of approximately $302 million (excluding add-on revenue taxes) on an annual
basis. The rates provided in the Rate Order became effective on January 14,
1995; however, they are being collected subject to refund as a result of
subsequent judicial action. The Rate Order was appealed by intervenors and
ComEd to the Illinois Appellate Court, which issued a decision on May 30, 1997
affirming the Rate Order in all respects with the exception of two issues,
which it remanded to the ICC for the purpose of providing further analysis.
Those issues relate to: (i) the manner in which certain costs are recovered
and which customers should pay those costs, and (ii) the proper rate of return
on common equity for ComEd. ComEd believes that the ICC can satisfy the
Appellate Court's remand directions on the basis of the existing record from
the ICC proceedings which led to the Rate Order. The Appellate Court's
decision was not appealed and the matter was returned to the ICC, where a
decision is expected early in the second quarter of 1998.
 
  With respect to the first issue remanded to the ICC, ComEd does not believe
it will have any effect on the overall level of rates. With respect to the
rate of return on common equity issue, the ICC had determined in the Rate
Order that ComEd's cost of common equity was 12.28%. Intervenors had submitted
testimony recommending a return on common equity of 11.50%. The Appellate
Court decision requires the ICC to clarify the basis for certain of its
findings relating to its rejection of the intervenors' recommendation and to
analyze further how it arrived at its conclusions. The Appellate Court stated
that after reanalyzing these bases the ICC can determine whether or not the
cost of common equity determination it adopted should still be followed. Each
tenth of one percent change in the rate of return on common equity has
approximately an $8 million effect on the level of annual revenues. The
Appellate Court's decision does not have any immediate effect on ComEd's rates
or require any refunds. In connection with the initiation of the appeal, ComEd
committed to make refunds "in the event that a final, non-appealable order is
entered reversing the ICC's Rate Order." Revenues of approximately $195
million would be subject to refund if the ICC were to adopt the lower rate of
return on common equity recommended by intervenors. An ICC Hearing Examiner
issued a proposed order in January 1998, which if adopted by the ICC, would
uphold the Rate Order and the associated $302 million revenue increase on an
annual basis.
 
  See "Changes in the Electric Utility Industry" above for information
regarding the 1997 Act.
 
  Nuclear Matters. Nuclear operations have been, and remain, an important
focus of ComEd--given the impact of such operations on overall O&M
expenditures and the ability of nuclear power plants to produce electric
energy at a relatively low marginal cost. ComEd operates a large number of
nuclear plants, ranging from the older Dresden and Quad Cities stations to the
more recently completed LaSalle, Byron and Braidwood stations, and is intent
upon safe, reliable and efficient operation. These plants were constructed
over a period of time in which technology, construction procedures and
regulatory initiatives and oversight have evolved, with the result that older
plants generally require greater attention and resources to meet regulatory
requirements and expectations as well as to maintain operational reliability.
As discussed in "Changes in the Electric Utility Industry" above, ComEd is
closing its Zion Station.
 
  ComEd's Dresden, Zion and LaSalle nuclear generating stations are currently
on the NRC's list of plants to be monitored closely. Dresden Station has been
on the list since 1992 and LaSalle and
 
                                     C-11
<PAGE>
 
Zion stations were added in January 1997. On January 21, 1998, the NRC stated
that although Dresden Station has demonstrated sustained improved performance
that would warrant removal from the list, continued evidence of cyclical
performance at ComEd's other nuclear generating stations indicated Dresden
Station did not meet all the criteria for removal from the list. At its
January 21, 1998 meeting, the NRC acknowledged improvements at LaSalle Station
but concluded that a substantial amount of work remains and the plant should
remain on the list. The NRC also stated that, based on a determination made
prior to the announcement of the cessation of power operations, at the
station, Zion should remain on the list. The listing of the plants does not
prevent ComEd from operating the generating units; however, it does mean that
the NRC will devote additional resources to monitoring ComEd's operating
performance and that ComEd will need to work to demonstrate to the NRC the
sustainability of improvements which it believes it has undertaken and is
continuing to implement. Also at the meeting, the NRC noted a declining
performance trend at Quad Cities Station. The NRC stated that although
operations performance at Quad Cities Station was generally good, weaknesses
were observed with respect to certain maintenance and engineering activities.
The NRC has indicated that it is monitoring ComEd's ability to manage its
nuclear operations in their entirety and that the performance at any one
facility will be viewed by the NRC in context with the performance of ComEd's
nuclear generating group as a whole.
 
  In January 1997, the NRC also took the unusual additional step of requiring
ComEd to submit information to allow the NRC to determine what actions, if
any, should be taken to assure that ComEd can safely operate its six nuclear
generating stations while sustaining performance improvement at each site. The
request also required ComEd to submit information regarding the criteria that
it has established, or planned to establish, to measure performance and to
explain ComEd's proposed actions if the criteria were not met. The request
stated the NRC staff's concerns with the "cyclical safety performance of ComEd
nuclear stations," noting the presence on the list of plants to be monitored
closely of Dresden, LaSalle and Zion stations at various times during the past
10 years. It also noted concerns regarding "ComEd's ability to establish
lasting and effective programs that result in sustained performance
improvement." The problems identified by the NRC are consistent with
weaknesses that have been identified in station self-assessments initiated by
ComEd, and management had already undertaken to develop and implement programs
designed to address these issues. ComEd submitted a response to the NRC on
March 28, 1997 and the NRC indicated in an April 25, 1997 public meeting with
representatives of ComEd management that ComEd's response was generally
adequate to demonstrate ComEd's ability to operate its nuclear generating
stations while sustaining performance improvements. In a November 4, 1997
meeting with the NRC staff, the NRC indicated that it believes ComEd's nuclear
performance has shown improvement, but that it is too early to conclude that
lasting improvement has been achieved. The NRC noted, as an exception to
ComEd's general improving and sustained performance in its nuclear operations,
concerns regarding ComEd's engineering efforts to resolve the longstanding
fire protection issues at the Quad Cities Station. The NRC and representatives
of ComEd's management have met and will continue to meet periodically in the
future, to follow-up on these matters.
 
  ComEd has devoted, and intends to continue to devote, significant resources
to the management and operations of its nuclear generating stations. Over the
past several years, it has increased and reinforced station management with
managers drawn from other utilities which have resolved similar operational
and performance issues, including the appointment of a new Chief Nuclear
Officer in late 1997. It has also sought to identify, anticipate and address
operating and performance issues in a safe, cost-effective manner, while
seeking to improve the availability and capacity factors of its nuclear
generating units.
 
  ComEd's activities, with respect to its nuclear generating stations, have
included improvements in operating and personnel procedures and repair and
replacement of equipment and can result in longer unit outages. LaSalle Units
1 and 2 and Quad Cities Units 1 and 2 are currently not operating.
 
                                     C-12
<PAGE>
 
ComEd is developing an integrated schedule for restarting the units at LaSalle
Station. It currently is expected that LaSalle Unit 1 will restart in the
third quarter of 1998 and LaSalle Unit 2 is expected to restart approximately
six months later. Both units at Quad Cities Station are expected to return to
service in the Spring of 1998.
 
  The LaSalle outage and an outage at Zion were part of several outages of
nuclear and fossil generating stations that several utilities operating in the
Midwestern power grid (including ComEd) were expecting and experienced during
1997. Although ComEd met its customers' electricity demands, the expectation
of the NERC, prior to the beginning of the summer, had been that there could
have been electric energy shortages during summer peak demand periods due to
generating station outages in the Midwestern power grid and transmission
limitations on delivering power from neighboring systems. In response to these
regional circumstances and expectations, ComEd increased the availability of
its remaining nuclear and fossil generating capacity, reinforced transmission
capacity, negotiated the purchase of power and related transmission service
from third parties, and worked with a number of customers to manage the use
and demand for power. The NERC will be analyzing electric reliability for the
summer of 1998 in light of the potential for continued outages of nuclear
plants operated by several utilities in the Midwestern power grid.
 
  Generating station availability and performance during a year may be issues
in fuel reconciliation proceedings in assessing the prudence of fuel and power
purchases during such year. Final ICC orders have been issued in fuel
reconciliation proceedings for years prior to 1994 and for the year 1995. In
1996, an intervenor filed testimony in the fuel reconciliation proceeding for
1994 seeking a refund of approximately $90 million relating to nuclear station
performance. The 1997 Act provides that the fuel reconciliation proceedings
for 1994 and 1996 must be concluded by the end of 1998. If refunds are
required in these proceedings, the refunds could have a material effect on
results of operations. The 1997 Act also provides that, because ComEd
eliminated its FAC effective January 1, 1997, the ICC shall not conduct a fuel
reconciliation proceeding for the year 1997 and subsequent years. See "Changes
in the Electric Utility Industry" above for information regarding the
elimination of ComEd's FAC.
 
  Based on ComEd's most recent study, decommissioning costs, including the
cost of decontamination and dismantling, are estimated to aggregate $4.8
billion in current-year (1998) dollars, including a contingency allowance.
ComEd estimates it will expend approximately $12.9 billion, including a
contingency allowance, for decommissioning costs primarily during the period
from 2007 through 2032. Such costs are expected to be funded by 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. See Note 1 of Notes to
Financial Statements under "Depreciation and Decommissioning" for additional
information.
 
  Environmental Matters. 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. See
Note 23 of Notes to Financial Statements.
 
RESULTS OF OPERATIONS
 
  Net Income (Loss) on Common Stock. The loss for 1997 was primarily due to
ComEd's discontinuation of regulatory accounting practices for the generation
portion of its business and other charges recorded as a result of the 1997
Act. The 1997 results also include the write-off for the closure of Zion
nuclear generating station.
 
 
                                     C-13
<PAGE>
 
  ComEd discontinued regulatory accounting practices for the generation
portion of its business in the fourth quarter of 1997 due to the 1997 Act.
Accordingly, ComEd's generation-related net regulatory assets (which represent
assets and liabilities properly recorded under regulatory accounting practices
but which would not be recorded under GAAP for non-regulated entities) were
written off, resulting in an extraordinary charge of $810 million (after-tax).
 
  In addition, as permitted under the 1997 Act, ComEd elected to eliminate its
FAC in December 1997, which resulted in a charge of $44 million (after-tax).
The reduction includes $25 million (after-tax) in net FAC charges billed to
its customers in 1997, which will be refunded to customers in 1998. The
reduction also includes a write-off of $19 million (after-tax) in
underrecovered energy costs that ComEd would have been entitled to recover if
the FAC had remained in effect.
 
  Also, 1997 results include the write down of ComEd's investment in uranium-
related properties to reflect costs which are not expected to be recovered in
a competitive market. The write down resulted in a charge of $60 million
(after-tax).
 
  Partially offsetting the charges to operations for 1997 was a change in the
accounting method for revenue recognition to record ComEd's 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 had a positive impact of $170 million
(after-tax), consisting of a one-time cumulative effect of the change for
years prior to 1997 of $197 million (after-tax), less the impact of the change
on 1997 results of $27 million (after-tax).
 
  On January 14, 1998, the Boards of Directors of Unicom and ComEd authorized
the cessation of nuclear generation operations at ComEd's Zion Station. The
closure resulted in a charge for 1997 of $523 million (after-tax), reflecting
the write-off of the unrecoverable portion of the cost of plant and
inventories and a liability for future closing costs.
 
  ComEd's kilowatthour sales, including sales to wholesale customers,
increased 5% during 1997 compared to 1996, as discussed below. In 1997 O&M
expenses increased by 12%, as discussed below.
 
  Also reducing 1997 operating results were increased fuel and purchased power
costs of $336 million, as discussed below. In addition, a 4% increase in
depreciation expense, primarily due to an increase in certain nuclear plant
depreciation resulted in a charge of $23 million (after-tax).
 
  The 1996 results reflect, among other factors, a 1% decrease in overall O&M
expenses as compared to 1995 and the positive effects of an income tax refund
related to prior years with an increase in operating results of $26 million
(after-tax) and a reduction in real estate taxes with an increase in operating
results of $28 million (after-tax). Approximately half of the reduction in
real estate taxes is related to the year 1995. The real estate tax reduction
results primarily from ongoing challenges by ComEd of the methodology used by
local taxing authorities to assess the value of ComEd's nuclear generating
stations. The 1996 results also reflect a 9% reduction in the total of
interest expense on debt and dividend requirements on preferred and preference
stocks compared to 1995, largely due to the early retirement of debt at the
end of 1995. In September 1996, the ICC approved ComEd's request to increase
depreciation charges on its nuclear generating units by $30 million for the
year 1996, resulting in a charge of $20 million (after-tax).
 
  The 1995 results reflect higher revenues, primarily as a result of higher
kilowatthour sales, and the higher rate levels, which became effective in
January 1995 under the Rate Order. The higher kilowatthour sales reflect the
unusually hot summer weather in 1995. The 1995 results were also affected by
higher O&M expenses, which reflect a charge of $59 million (after-tax) for a
voluntary employee separation offer to certain ComEd employees. ComEd also
recorded a charge of $20 million (after-tax) related to the early redemption
of $645 million of long-term debt.
 
                                     C-14
<PAGE>
 
  Operating Revenues. ComEd's electric operating revenues reflect revenues
from sales to ultimate consumers (including residential, commercial and
industrial customers within its service territory), revenues from sales for
resale (i.e., sales to wholesale customers, principally other electric
utilities), and revenues from collections under its FAC for years prior to
1997 (which was intended to recover variations in ComEd's fuel cost for
generating electric energy and the energy portion of purchased power cost in
relation to the amount included in ComEd's base rates). Operating revenues are
affected by kilowatthour sales, rates and FAC recoveries. Kilowatthour sales,
in turn, are affected by weather, the level of economic activity within
ComEd's service area, and off-system or wholesale sales to other utilities.
Off-system sales opportunities are affected by a number of factors, including
nuclear generating availability and performance.
 
  During 1997, electric operating revenues increased $139 million, primarily
due to a 29% increase in kilowatthour sales to wholesale customers.
Kilowatthour sales to ultimate consumers during 1997 increased 1% compared to
1996, reflecting continued economic growth in ComEd's service territory.
Operating revenues in 1997 were reduced by the provision for revenue refunds
of $45 million, including revenue taxes, related to the elimination of the
FAC. Operating revenues increased $25 million in the year 1996, as compared to
the year 1995, principally reflecting increased sales for resale and increased
energy cost recoveries under ComEd's then effective FAC, although kilowatthour
sales to ultimate consumers were down 1% from the prior year due to the cooler
summer weather compared to the exceptionally hot summer in 1995. Operating
revenues increased $632 million in the year 1995, as compared to the year
1994, primarily due to an increase of 5% in kilowatthour sales to ultimate
consumers attributable to the hot summer weather, as well as a rate increase
that became effective in January 1995.
 
  Fuel Costs. Changes in fuel expense for the years 1997, 1996 and 1995
primarily resulted from changes in the average cost of fuel consumed, changes
in the mix of fuel sources of electric energy generated and changes in net
generation of electric energy. Fuel mix is determined primarily by system
load, the costs of fuel consumed and the availability of nuclear generating
units. The cost of fuel consumed, net generation of electric energy and fuel
sources of kilowatthour generation were as follows:
 
<TABLE>
<CAPTION>
                                                         1997    1996    1995
                                                        ------  ------  ------
   <S>                                                  <C>     <C>     <C>
   Cost of fuel consumed (per million Btu):
    Nuclear...........................................   $0.57   $0.53   $0.52
    Coal..............................................   $2.28   $2.41   $2.43
    Oil...............................................   $3.90   $3.41   $3.06
    Natural gas.......................................   $2.69   $2.75   $1.85
    Average all fuels.................................   $1.33   $1.17   $1.05
   Net generation of electric energy (millions of
    kilowatthours)....................................  85,861  93,048  96,608
   Fuel sources of kilowatthour generation:
    Nuclear...........................................      57%     67%     73%
    Coal..............................................      39      30      24
    Oil...............................................      --       1      --
    Natural gas.......................................       4       2       3
                                                        ------  ------  ------
                                                           100%    100%    100%
                                                        ======  ======  ======
</TABLE>
 
  The decrease in nuclear generation as a percentage of total generation for
1997 compared to the prior years is primarily due to outages at certain of
ComEd's nuclear generating stations. See "Regulation," subcaption "Nuclear
Matters" above for information regarding outages at certain of ComEd's nuclear
generating stations.
 
  Under the Energy Policy Act of 1992, investor-owned electric utilities that
have purchased enrichment services from the DOE are being assessed amounts to
fund a portion of the cost for the decontamination and decommissioning of
uranium enrichment facilities owned and previously operated by the DOE.
ComEd's portion of such assessments is estimated to be approximately $15
 
                                     C-15
<PAGE>
 
million per year (to be adjusted annually for inflation) to year 2007. The Act
provides that such assessments are to be treated as a cost of fuel. See Note 1
of Notes to Financial Statements under "Nuclear Fuel," for information related
to the accounting for such costs.
 
  Fuel Supply. Compared to other utilities, ComEd has relatively low average
fuel costs as a result of its reliance predominantly on lower cost nuclear
fuel. ComEd's coal costs, however, are high compared to those of other
utilities. ComEd's western coal contracts and its rail contracts for delivery
of the western coal provide for the purchase of certain coal at prices
substantially above currently prevailing market prices, and ComEd has
significant purchase commitments under its contracts. In addition, as of
December 31, 1997, ComEd had coal reserves of $282 million. In prior years,
ComEd's commitments for the purchase of coal exceeded its requirements. Rather
than take all the coal it was required to take, ComEd agreed to purchase the
coal in place in the form of coal reserves. For additional information
concerning ComEd's coal purchase commitments, fuel reconciliation proceedings
and coal reserves, see "Liquidity and Capital Resources" above and "Coal
Reserves" in Note 1 of Notes to Financial Statements.
 
  Purchased Power. Amounts of purchased power are primarily affected by system
load, the availability of ComEd and the Indiana Company's generating units and
the availability and cost of power from other utilities. Purchased power costs
increased $255 million in 1997 compared to 1996, primarily due to outages at
certain of ComEd's nuclear generating stations. See "Regulation," subcaption
"Nuclear Matters" above, for information regarding outages at certain of
ComEd's nuclear generating stations.
 
  The number and average cost of kilowatthours purchased were as follows:
 
<TABLE>
<CAPTION>
                                                            1997   1996   1995
                                                           ------  -----  -----
   <S>                                                     <C>     <C>    <C>
   Kilowatthours (millions)............................... 16,672  6,129  2,475
   Cost per kilowatthour..................................   2.40c  2.37c  2.60c
</TABLE>
 
  Purchased power is expected to increase in the year 1998 compared to the
year 1997 due to expected increased kilowatthour sales, lower nuclear
generation and higher costs for power purchased from other utilities.
 
  Deferred Under or Overrecovered Energy Costs--Net. Operating expenses for
the years 1997, 1996 and 1995 include the net change in under or overrecovered
allowable energy costs under ComEd's FAC. Operating expenses in 1997 also
reflect the write-off of the unrecoverable energy costs related to the
elimination of ComEd's FAC. See "Changes in the Electric Utility Industry,"
"Fuel Costs" and "Fuel Supply" above and Note 1 of Notes to Financial
Statements under "Fuel Adjustment Clause."
 
  Operation and Maintenance Expenses. O&M expenses include the expenses
associated with operating and maintaining ComEd's generation, transmission and
distribution assets as well as customer service, administrative overhead and
support. Given the variety of expense categories covered, there are a number
of factors which affect the level of such expenses within any given year. Two
major components of such expenses, however, are the costs associated with
operating and maintaining ComEd's nuclear and fossil generating facilities.
Generating station expenses are affected by the cost of materials, regulatory
requirements and expectations, the age of facilities as well as cost control
efforts.
 
  During the three years presented in the financial statements, the aggregate
level of O&M expenses increased 12% in 1997 compared to 1996, decreased 1% in
1996 compared to 1995, and increased 4% in 1995 compared to 1994. All three
years include increases in the level of generating station expenses, as
discussed below. The year to year variations reflect efforts in 1996 and 1997
to improve nuclear generating station availability as well as to meet
regulatory requirements and
 
                                     C-16
<PAGE>
 
expectations, and the impact in 1995 of an early separation program offered to
ComEd's employees, which resulted in a $97 million charge. Additional factors
in each year also affected the level of O&M expenses.
 
  O&M expenses associated with nuclear generating stations increased $122
million, $88 million and $32 million for the years 1997, 1996 and 1995,
respectively, as a result of activities associated with the repair,
replacement and improvement of nuclear generating facility equipment. Since
1995, ComEd has increased the number and scope of maintenance activities
associated with its nuclear generating stations. Such efforts are the result
of station performance evaluations performed to identify the sources and
causes of unplanned equipment repairs. The goal of such efforts is to design
and implement cost effective repairs and improvements to increase station
availability. The efforts begun in 1995 are expected to continue through 1998.
 
  The increase in O&M expenses associated with nuclear generating stations has
been driven by ComEd's objective to improve station availability, as well as
to meet regulatory requirements and expectations. ComEd is pursuing a program
to improve the quality of nuclear operations, including safety and efficiency,
which is also expected to achieve a longer term goal of improved availability
and to be positioned to take advantage of opportunities in a more competitive
market. During the three years presented in the financial statements, ComEd
increased and reinforced station management with managers drawn from other
utilities which have resolved similar operating issues. It has also sought to
identify, anticipate and address nuclear station operating and performance
issues in a safe, cost-effective manner, while seeking to improve the
availability and capacity factors of its nuclear generating units. Such
activities have included improvements in operating and personnel procedures
and repair and replacement of equipment, and can result in longer unit
outages. Such activities have involved increased maintenance and repair
expenses in recent years.
 
  O&M expenses associated with fossil generating stations increased $31
million, $4 million and $3 million for the years 1997, 1996 and 1995,
respectively. The increase related to fossil generating stations in 1997 is
primarily due to an increase in the repair and improvement of fossil
generating facility equipment in order to increase their general availability,
and to ensure their availability during the Summer of 1997. That increase was
partially offset by a reduction in personnel.
 
  O&M expenses associated with transmission and distribution facilities
increased $15 million and $11 million for the years 1997 and 1996,
respectively, and decreased $3 million for the year 1995. The 1997 increase is
primarily due to increased emergency restoration of electric service and tree
trimming costs. The 1996 increase reflects higher maintenance expenses. The
decrease in 1995 reflects cost control efforts. O&M expenses associated with
customer-related activities increased $11 million, $17 million and $10 million
for the years 1997, 1996 and 1995, respectively. The increase in 1997 is
primarily due to an increase in uncollectible accounts.
 
  O&M expenses also include compensation and benefits expenses. Since 1995,
ComEd has reduced the size of its workforce by offering incentives for
employees to leave the company voluntarily. Such incentives included both
current payments and earlier eligibility for post-retirement health care
benefits, resulting in charges of $39 million, $12 million and $97 million for
the years 1997, 1996 and 1995, respectively.
 
  Other compensation and benefits expenses, excluding the effects of employee
separation plans, decreased $14 million, $20 million and $65 million for the
years 1997, 1996 and 1995, respectively. The decrease in 1997 is primarily due
to a reduction in medical costs for active employees. The decreases in 1996
and 1995 are primarily related to a reduction of post-retirement health care
benefits costs, primarily as a result of a plan amendment effected in mid-1995
which required retired employee contributions to the plan for the first time.
Favorable experience also allowed the use of lower health care cost trend
rates, producing a lower charge in 1996 and 1995. O&M expenses also
 
                                     C-17
<PAGE>
 
reflect $41 million, $38 million and $65 million for employee incentive
compensation plan costs for the years 1997, 1996 and 1995, respectively. The
payments, which were made partly in cash and partly in shares of Unicom common
stock, were made under Unicom's Incentive Plans as the result of the
achievement during the indicated years of specified financial performance,
operating performance and increased shareholder value. The effects of
inflation have also increased O&M expenses during the years and are also
reflected in the increases and decreases discussed herein.
 
  O&M expenses in 1997 also include $25 million for the additional write-off
of obsolete materials and supplies compared to 1996. O&M expenses associated
with certain administrative and general costs increased $35 million for the
year 1997. This increase was due to a variety of reasons including an increase
in the provision for vacation pay liability.
 
  Depreciation. Depreciation expense increased for the years 1997, 1996 and
1995 as a result of additional nuclear plant depreciation and additions to
plant in service. The additional depreciation on ComEd's nuclear generating
units includes depreciation recorded for the year 1997 related to its steam
generators at Byron Unit 1 and Braidwood Unit 1 of $59 million, which are
expected to be replaced prior to year-end 1998, and the 1996 additional
depreciation initiative of $30 million. See "Depreciation and Decommissioning"
in Note 1 of Notes to Financial Statements.
 
  Interest on Debt. Changes in interest on long-term debt and notes payable
for the years 1997, 1996 and 1995 were due to changes in average interest
rates and in the amounts of long-term debt and notes payable outstanding.
Changes in interest on long-term debt also reflected new issues of debt, the
retirement and early redemption of debt, and the retirement and redemption of
issues which were refinanced at generally lower rates of interest. The average
amounts of long-term debt and notes payable outstanding and average interest
rates thereon were as follows:
 
<TABLE>
<CAPTION>
                                                          1997    1996    1995
                                                         ------  ------  ------
   <S>                                                   <C>     <C>     <C>
   Long-term debt outstanding:
    Average amount (millions)..........................  $6,256  $6,644  $7,528
    Average interest rate..............................    7.65%   7.67%   7.78%
   Notes payable outstanding:
    Average amount (millions)..........................  $  153  $  230  $   51
    Average interest rate..............................    5.95%   5.79%   6.40%
</TABLE>
 
  Decommissioning. The staff of the SEC has questioned certain of the current
accounting practices of the electric utility industry, including ComEd,
regarding the recognition, measurement and classification of decommissioning
costs for nuclear generating stations in financial statements of electric
utilities. In response to these questions, the FASB is reviewing the
accounting for nuclear decommissioning costs and issued an exposure draft in
February 1996 requesting written comment. If current electric utility industry
accounting practices for such decommissioning costs are changed, annual
provisions for decommissioning could increase and the estimated cost for the
decommissioning of operating nuclear plants after retirement could be recorded
as a liability rather than as accumulated depreciation. Decommissioning costs
of currently retired nuclear plants are recorded as a liability. ComEd does
not believe that such changes, if required, would have an adverse effect on
the results of operations due to its ability to recover decommissioning costs
through rates.
 
  Other Items. The amounts of AFUDC reflect changes in the average levels of
investment subject to AFUDC and changes in the average annual capitalization
rates as discussed in Note 1 of Notes to Financial Statements under "AFUDC."
AFUDC does not contribute to the current cash flow of ComEd. ComEd
discontinued SFAS No. 71 regulatory accounting practices in December 1997 for
the generation-related portion of its business. As a result, ComEd will not
record AFUDC, but will capitalize interest costs on its generation-related
construction work in progress and nuclear fuel in process beginning in 1998.
 
  The ratios of earnings to fixed charges for the years 1997, 1996 and 1995
were 0.58, 2.90 and 2.79, respectively. The ratios of earnings to fixed
charges and preferred and preference stock
 
                                     C-18
<PAGE>
 
dividend requirements for the years 1997, 1996 and 1995 were 0.49, 2.48 and
2.39, respectively. Earnings for 1997 were inadequate to cover fixed charges
and fixed charges and preferred and preference stock dividend requirements by
approximately $259 million and $359 million, respectively. The deficiency is
principally attributable to the earnings impact of the closure of Zion
Station.
 
  Business corporations, in general, have been adversely affected by inflation
because amounts retained after the payment of all costs have been inadequate
to replace, at increased costs, the productive assets consumed. Electric
utilities, in particular, have been especially affected as a result of their
capital intensive nature and regulation which limits capital recovery and
prescribes installation or modification of facilities to comply with
increasingly stringent safety and environmental requirements. Because the
regulatory process limits the amount of depreciation expense included in
ComEd's revenue allowance to the original cost of utility plant investment,
the resulting cash flows are inadequate to provide for replacement of that
investment in future years or preserve the purchasing power of common equity
capital previously invested.
 
                                     C-19
<PAGE>
 
                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Shareholders of Commonwealth Edison Company:
 
  We have audited the accompanying consolidated balance sheets and statements
of consolidated capitalization of Commonwealth Edison Company (an Illinois
corporation) and subsidiary companies as of December 31, 1997 and 1996, and
the related statements of consolidated operations, retained earnings (deficit)
and cash flows for each of the three years in the period ended December 31,
1997. 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 generally accepted auditing
standards. 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 financial statements referred to above present fairly,
in all material respects, the financial position of Commonwealth Edison
Company and subsidiary companies as ofDecember 31, 1997 and 1996, and the
results of their operations and their cash flows for each of the three years
in the period ended December 31, 1997, in conformity with generally accepted
accounting principles.
 
  As discussed in Note 3, effective January 1, 1997, the Company changed its
method of accounting for revenue recognition.
 
                                          Arthur Andersen LLP
 
Chicago, Illinois
January 30, 1998
 
                                     C-20
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                     STATEMENTS OF CONSOLIDATED OPERATIONS
 
  The following Statements of Consolidated Operations for the years 1997, 1996
and 1995 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 rates, regulation, population,
business activity, 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>
                                              1997         1996        1995
                                           -----------  ----------  ----------
                                           (THOUSANDS EXCEPT PER SHARE DATA)
<S>                                        <C>          <C>         <C>
Electric Operating Revenues............... $ 7,073,088  $6,934,547  $6,909,786
                                           -----------  ----------  ----------
Electric Operating Expenses and Taxes:
 Fuel..................................... $ 1,223,210  $1,167,039  $1,089,841
 Purchased power..........................     400,055     145,299      64,378
 Deferred (under)/overrecovered energy
  costs--net..............................      16,228      (9,184)     (2,732)
 Operation................................   1,714,460   1,496,175   1,597,964
 Maintenance..............................     689,729     652,495     566,749
 Depreciation.............................     985,877     951,865     897,305
 Recovery of regulatory assets............      15,272      15,272      15,272
 Taxes (except income)....................     799,167     782,668     832,026
 Income taxes--
   Current--Federal.......................     214,349     265,325     257,083
   --State................................      65,287      74,192      87,138
   Deferred--Federal--net.................      56,111     140,122     172,403
   --State--net...........................       2,544      16,139      15,605
 Investment tax credits deferred--net.....     (31,015)    (33,378)    (28,710)
                                           -----------  ----------  ----------
                                           $ 6,151,274  $5,664,029  $5,564,322
                                           -----------  ----------  ----------
Electric Operating Income................. $   921,814  $1,270,518  $1,345,464
                                           -----------  ----------  ----------
Other Income and (Deductions):
 Interest on long-term debt............... $  (478,530) $ (509,898) $ (585,806)
 Interest on notes payable................      (9,134)    (13,308)     (3,280)
 Allowance for funds used during
  construction--
   Borrowed funds.........................      18,555      19,426      11,137
   Equity funds...........................      23,770      20,776      13,129
 Income taxes applicable to nonoperating
  activities..............................      11,230       7,812       5,085
 Provision for dividends on company-
  obligated mandatorily redeemable
  preferred securities of subsidiary
  trusts holding solely the Company's
  subordinated debt securities............     (28,860)    (16,960)     (4,428)
 Loss of nuclear plant closure............    (885,611)        --          --
 Income tax effect of nuclear plant
  closure.................................     362,952         --          --
 Miscellaneous--net.......................     (96,324)    (34,998)    (44,125)
                                           -----------  ----------  ----------
                                           $(1,081,952) $ (527,150) $ (608,288)
                                           -----------  ----------  ----------
Net Income (Loss) Before Extraordinary
 Items and Cumulative Effect of Change in
 Accounting Principle..................... $  (160,138) $  743,368  $  737,176
Extraordinary Losses Less Applicable
 Income Taxes.............................    (810,335)        --      (20,022)
Cumulative Effect of Change in Accounting
 Principle................................     196,700         --          --
                                           -----------  ----------  ----------
Net Income (Loss)......................... $  (773,773) $  743,368  $  717,154
Provision for Dividends on Preferred and
 Preference Stocks........................      60,486      64,424      69,961
                                           -----------  ----------  ----------
Net Income (Loss) on Common Stock......... $  (834,259) $  678,944  $  647,193
                                           ===========  ==========  ==========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of the
                               above statements.
 
                                     C-21
<PAGE>
 
              COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                            DECEMBER 31
                                                      ------------------------
                       ASSETS                            1997         1996
                       ------                         -----------  -----------
                                                      (THOUSANDS OF DOLLARS)
<S>                                                   <C>          <C>
Utility Plant:
  Plant and equipment, at original cost (includes
   construction work in progress of $1,131 million
   and $1,034 million, respectively)................. $27,518,690  $27,900,632
  Less--Accumulated provision for depreciation.......  11,646,445   11,479,991
                                                      -----------  -----------
                                                      $15,872,245  $16,420,641
  Nuclear fuel, at amortized cost....................     906,043      973,961
                                                      -----------  -----------
                                                      $16,778,288  $17,394,602
                                                      -----------  -----------
Investments:
  Nuclear decommissioning funds...................... $ 1,855,697  $ 1,456,360
  Subsidiary companies...............................      48,605      118,188
  Other investments, at cost.........................      39,002       14,903
                                                      -----------  -----------
                                                      $ 1,943,304  $ 1,589,451
                                                      -----------  -----------
Current Assets:
  Cash............................................... $       --   $        89
  Temporary cash investments.........................      72,634       28,801
  Special deposits...................................         271        1,610
  Receivables--
    Customers........................................     873,418      568,155
    Other............................................     130,537      103,243
    Provisions for uncollectible accounts............     (17,544)     (12,893)
  Coal and fuel oil, at average cost.................     120,664      140,362
  Materials and supplies, at average cost............     255,338      324,485
  Deferred unrecovered energy costs..................         --        16,228
  Deferred income taxes related to current assets and
   liabilities.......................................     179,493      119,917
  Prepayments and other..............................     125,507      108,086
                                                      -----------  -----------
                                                      $ 1,740,318  $ 1,398,083
                                                      -----------  -----------
Deferred Charges and Other Noncurrent Assets:
  Regulatory assets.................................. $ 1,685,235  $ 2,434,807
  Coal reserves......................................     194,769      291,324
  Other..............................................     116,489      108,833
                                                      -----------  -----------
                                                      $ 1,996,493  $ 2,834,964
                                                      -----------  -----------
                                                      $22,458,403  $23,217,100
                                                      ===========  ===========
</TABLE>
 
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.
 
                                      C-22
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31
                                                        -----------------------
            CAPITALIZATION AND LIABILITIES                 1997        1996
            ------------------------------              ----------- -----------
                                                        (THOUSANDS OF DOLLARS)
<S>                                                     <C>         <C>
Capitalization (see accompanying statements):
  Common stock equity.................................. $ 4,866,438 $ 6,043,093
  Preferred and preference stocks without mandatory
   redemption requirements.............................     507,053     507,342
  Preference stock subject to mandatory redemption
   requirements........................................     174,328     217,901
  Company-obligated mandatorily redeemable preferred
   securities of subsidiary trusts holding solely the
   Company's subordinated debt securities*.............     350,000     200,000
  Long-term debt.......................................   5,562,883   5,957,604
                                                        ----------- -----------
                                                        $11,460,702 $12,925,940
                                                        ----------- -----------
Current Liabilities:
  Notes payable--
   Commercial paper.................................... $   150,000 $   121,000
   Bank loans..........................................       8,150       7,750
  Current portion of long-term debt, redeemable
   preference stock and capitalized lease obligations..     772,831     781,782
  Accounts payable.....................................     490,124     440,622
  Accrued interest.....................................     167,807     166,862
  Accrued taxes........................................     198,556     182,366
  Dividends payable....................................     106,083     101,217
  Customer deposits....................................      55,214      51,585
  Accrued plant closing costs..........................     135,000         --
  Other................................................     164,897      98,443
                                                        ----------- -----------
                                                        $ 2,248,662 $ 1,951,627
                                                        ----------- -----------
Deferred Credits and Other Noncurrent Liabilities:
  Deferred income taxes................................ $ 3,839,607 $ 4,568,832
  Nuclear decommissioning liability for retired plants.   1,301,000     275,700
  Accumulated deferred investment tax credits..........     602,122     655,662
  Accrued spent nuclear fuel disposal fee and related
   interest............................................     692,673     657,448
  Obligations under capital leases.....................     437,950     474,841
  Regulatory liabilities...............................     698,750     668,301
  Other................................................   1,176,937   1,038,749
                                                        ----------- -----------
                                                        $ 8,749,039 $ 8,339,533
                                                        ----------- -----------
Commitments and Contingent Liabilities (Note 23)
                                                        $22,458,403 $23,217,100
                                                        =========== ===========
</TABLE>
 
  *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.
 
                                     C-23
<PAGE>
 
              COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   STATEMENTS OF CONSOLIDATED CAPITALIZATION
 
<TABLE>
<CAPTION>
                                                    DECEMBER 31
                                              ------------------------
                                                 1997         1996
                                              -----------  -----------
                                              (THOUSANDS OF DOLLARS)
<S>                                           <C>          <C>
Common Stock Equity:
  Common stock, $12.50 par value per share--
   Outstanding--214,228,077 shares and
    214,218,454 shares, respectively......... $ 2,677,851  $ 2,677,731
  Premium on common stock and other paid-in
   capital...................................   2,223,564    2,223,396
  Capital stock and warrant expense..........     (15,805)     (15,990)
  Retained earnings (deficit)................     (19,172)   1,157,956
                                              -----------  -----------
                                              $ 4,866,438  $ 6,043,093
                                              -----------  -----------
Preferred and Preference Stocks Without
 Mandatory Redemption Requirements:
  Preference stock, cumulative, without par
   value--
   Outstanding--13,499,549 shares............ $   504,957  $   504,957
  $1.425 convertible preferred stock,
   cumulative, without par value--
   Outstanding--65,912 shares and 75,003
    shares, respectively.....................       2,096        2,385
  Prior preferred stock, cumulative, $100 par
   value per share--
   No shares outstanding.....................         --           --
                                              -----------  -----------
                                              $   507,053  $   507,342
                                              -----------  -----------
Preference Stock Subject to Mandatory
 Redemption Requirements:
  Preference stock, cumulative, without par
   value--
   Outstanding--2,058,560 shares and
    2,496,775 shares, respectively........... $   205,016  $   248,589
  Current redemption requirements for
   preference stock included in current
   liabilities...............................     (30,688)     (30,688)
                                              -----------  -----------
                                              $   174,328  $   217,901
                                              -----------  -----------
Company-Obligated Mandatorily Redeemable
 Preferred Securities of Subsidiary Trusts
 Holding Solely the Company's Subordinated
 Debt Securities............................. $   350,000  $   200,000
                                              -----------  -----------
Long-Term Debt:
  First mortgage bonds:
    Maturing 1997 through 2002--5 3/8% to
    9 3/8%................................... $ 1,060,000  $ 1,320,000
    Maturing 2003 through 2012--3.70% to
    8 3/8%...................................   1,440,400    1,440,400
    Maturing 2013 through 2022--5.85% to
    9 7/8%...................................   1,791,000    1,991,000
    Maturing 2023--7 3/4% to 8 3/8%..........     560,000      560,000
                                              -----------  -----------
                                              $ 4,851,400  $ 5,311,400
  Sinking fund debentures, due 1999 through
   2011--2 3/4% to 7 5/8%....................     100,298      105,164
  Pollution control obligations, due 2007
   through 2014--3.70% to 5 7/8%.............     142,200      142,200
  Other long-term debt.......................   1,016,889      986,932
  Current maturities of long-term debt
   included in current liabilities...........    (501,445)    (538,534)
  Unamortized net debt discount and premium..     (46,459)     (49,558)
                                              -----------  -----------
                                              $ 5,562,883  $ 5,957,604
                                              -----------  -----------
                                              $11,460,702  $12,925,940
                                              ===========  ===========
</TABLE>
 
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.
 
                                      C-24
<PAGE>
 
              COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
             STATEMENTS OF CONSOLIDATED RETAINED EARNINGS (DEFICIT)
 
<TABLE>
<CAPTION>
                                                1997        1996       1995
                                             ----------  ---------- ----------
                                                  (THOUSANDS OF DOLLARS)
<S>                                          <C>         <C>        <C>
Balance at Beginning of Year................ $1,157,956  $  821,848 $  517,335
Add--Net income (loss)......................   (773,773)    743,368    717,154
                                             ----------  ---------- ----------
                                             $  384,183  $1,565,216 $1,234,489
                                             ----------  ---------- ----------
Deduct--
  Dividends declared on--
    Common stock............................ $  342,763  $  342,732 $  342,710
    Preferred and preference stocks.........     60,159      64,095     66,855
  Other capital stock transactions--net.....        433         433      3,076
                                             ----------  ---------- ----------
                                             $  403,355  $  407,260 $  412,641
                                             ----------  ---------- ----------
Balance at End of Year (Includes $384
 million of appropriated retained earnings
 at December 31, 1997)...................... $  (19,172) $1,157,956 $  821,848
                                             ==========  ========== ==========
</TABLE>
 
 
 
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.
 
                                      C-25
<PAGE>
 
              COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                     STATEMENTS OF CONSOLIDATED CASH FLOWS
 
<TABLE>
<CAPTION>
                                            1997         1996         1995
                                         -----------  -----------  -----------
                                               (THOUSANDS OF DOLLARS)
<S>                                      <C>          <C>          <C>
Cash Flow From Operating Activities:
 Net income (loss)...................... $  (773,773) $   743,368  $   717,154
 Adjustments to reconcile net income
  (loss) to net cash provided by
  operating activities:
   Depreciation and amortization........   1,032,331      988,944      948,683
   Deferred income taxes and investment
    tax credits--net....................    (348,889)     124,857      158,296
   Extraordinary loss related to early
    redemption of long-term debt........         --           --        33,158
   Extraordinary loss related to write-
    off of certain net regulatory
    assets..............................     810,335          --           --
   Cumulative effect of a change in
    accounting principle................    (196,700)         --           --
   Loss on nuclear plant closure........     885,611          --           --
   Provisions for revenue refunds.......      45,470          --           --
   Equity component of allowance for
    funds used during construction......     (23,770)     (20,776)     (13,129)
   Recovery of regulatory assets........      15,272       15,272       15,272
   Provisions/(payments) for liability
    for separation costs--net...........      15,986      (29,888)      60,713
   Net effect on cash flows of changes
    in:
     Receivables........................      21,194       67,888     (169,211)
     Coal and fuel oil..................      19,698      (11,186)     (20,304)
     Materials and supplies.............      41,659        9,053       51,073
     Accounts payable excluding nuclear
      fuel lease principal payments and
      separation costs--net.............     233,360      110,437      465,475
     Accrued interest and taxes.........      (6,465)     (37,021)      (5,765)
     Other changes in certain current
      assets and liabilities............      38,873       13,765       26,555
   Other--net...........................     177,918      105,543      160,726
                                         -----------  -----------  -----------
                                         $ 1,988,110  $ 2,080,256  $ 2,428,696
                                         -----------  -----------  -----------
Cash Flow From Investing Activities:
 Construction expenditures.............. $  (969,626) $  (949,871) $  (899,366)
 Nuclear fuel expenditures..............    (185,373)    (281,833)    (289,118)
 Sale of generating plant...............      60,791          --           --
 Equity component of allowance for
  funds used during construction........      23,770       20,776       13,129
 Contributions to nuclear
  decommissioning funds.................    (114,825)    (119,281)    (132,653)
 Other investments and special
  deposits..............................      (4,703)         (52)      19,599
                                         -----------  -----------  -----------
                                         $(1,189,966) $(1,330,261) $(1,288,409)
                                         -----------  -----------  -----------
Cash Flow From Financing Activities:
 Issuance of securities--
   Long-term debt....................... $   297,663  $   198,902  $       --
   Company-obligated mandatorily redeem-
    able preferred securities of
    subsidiary trusts holding solely the
    Company's subordinated debt
    securities..........................     150,000          --       200,000
   Capital stock........................         288          669          112
 Retirement and redemption of
  securities--
   Long-term debt.......................    (734,768)    (431,985)  (1,137,272)
   Capital stock........................     (44,111)     (44,513)     (17,935)
 Deposits and securities held for
  retirement and redemption of
  securities............................         --           --           106
 Premium paid on early redemption of
  long-term debt........................      (9,500)         --       (25,823)
 Cash dividends paid on capital stock...    (426,916)    (424,764)    (414,385)
 Proceeds from sale/leaseback of
  nuclear fuel..........................     149,955      316,617      193,215
 Nuclear fuel lease principal payments..    (166,411)    (211,741)    (237,845)
 Increase (Decrease) in short-term
  borrowings............................      29,400     (139,400)     261,000
                                         -----------  -----------  -----------
                                         $  (754,400) $  (736,215) $(1,178,827)
                                         -----------  -----------  -----------
Increase (Decrease) in Cash and
 Temporary Cash Investments............. $    43,744  $    13,780  $   (38,540)
Cash and Temporary Cash Investments at
 Beginning of Year......................      28,890       15,110       53,650
                                         -----------  -----------  -----------
Cash and Temporary Cash Investments at
 End of Year............................ $    72,634  $    28,890  $    15,110
                                         ===========  ===========  ===========
</TABLE>
 
   The accompanying Notes to Financial Statements are an integral part of the
                               above statements.
 
                                      C-26
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                         NOTES TO FINANCIAL STATEMENTS
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Corporate Structure. Unicom is the parent holding company of ComEd and other
unregulated subsidiaries.
 
  Principles of Consolidation. The consolidated financial statements include
the accounts of ComEd, the Indiana Company and the Trusts. All significant
intercompany transactions have been eliminated. ComEd's investments in other
subsidiary companies, which are not material in relation to ComEd's financial
position or results of operations, are accounted for in accordance with the
equity method of accounting.
 
  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.
 
  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 refunded to customers through future rates. See Note 2 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, including
construction work in progress and nuclear fuel and excluding the
decommissioning costs included in the accumulated provision for depreciation,
not subject to cost-based rate regulation, was $12.4 billion and $13.1 billion
at December 31, 1997 and 1996, respectively.
 
                                     C-27
<PAGE>
 
             COMMONWEALTH EDISON COMPANY 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, 1997 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                           ---------------------
                                                              1997       1996
                                                           ---------- ----------
                                                               (THOUSANDS OF
                                                                 DOLLARS)
<S>                                                        <C>        <C>
Regulatory assets:
  Deferred income taxes (1)............................... $  785,354 $1,649,037
  Deferred carrying charges (2)...........................        --     396,879
  Nuclear decommissioning costs--Dresden Unit 1 (3).......    268,369    174,621
  Nuclear decommissioning costs--Zion Units 1 and 2 (4)...    579,777        --
  Unamortized loss on reacquired debt (5).................     51,735    148,380
  Other...................................................        --      65,890
                                                           ---------- ----------
                                                           $1,685,235 $2,434,807
                                                           ========== ==========
Regulatory liabilities:
  Deferred income taxes (1)............................... $  698,750 $  668,301
                                                           ========== ==========
</TABLE>
- --------
(1) Recorded in compliance with SFAS No. 109, Accounting for Income Taxes.
(2) Recorded as authorized in the Remand Order.
(3) Amortized over the remaining current NRC license life of Dresden Station.
    See "Depreciation and Decommissioning" below for additional information.
(4) Amortized over the remaining current NRC license life of Zion Station. See
    "Depreciation and Decommissioning" below for additional information.
(5) Amortized over the remaining lives of the long-term debt issued to finance
    the reacquisition. See "Loss on Reacquired Debt" below for additional
    information.
 
  The 1997 regulatory assets and liabilities' balances reflect the write-off
of generation-related regulatory assets and liabilities and the recording of
nuclear decommissioning costs for Zion Station. See "Depreciation and
Decommissioning" below and Note 2 for additional information.
 
  Fuel Adjustment Clause. The FAC adopted by the ICC provided for the recovery
of changes in fossil and nuclear fuel costs and the energy portion of
purchased power costs as compared to the fuel and purchased energy costs
included in ComEd's base rates. As authorized by the ICC, ComEd had recorded
under or overrecoveries of allowable fuel and energy costs which, under the
clause, were recoverable or refundable in subsequent months. Pursuant to an
option contained in the 1997 Act, ComEd filed a tariff on December 16, 1997 to
eliminate its FAC as of January 1, 1997. See Note 2 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 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 current 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, the one-time fee and the interest accrual on the one-time
fee. Nuclear fuel expenses, including leased fuel costs and provisions for
spent nuclear fuel disposal costs, were $298 million, $354 million and $391
million for the years 1997, 1996 and 1995, respectively.
 
                                     C-28
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  The balance of nuclear fuel, at amortized cost, on the Consolidated Balance
Sheets includes amounts to be recovered for assessments by the DOE to fund a
portion of the cost for the decontamination and decommissioning of uranium
enrichment facilities owned and previously operated by the DOE. As of December
31, 1997 and 1996, an asset related to the assessments of $156 million and
$168 million, respectively, was recorded. As of December 31, 1997 and 1996, a
corresponding liability of $144 million and $157 million, respectively, was
recorded, of which $16 million was included in other current liabilities on
the Consolidated Balance Sheets.
 
  Coal Reserves. At December 31, 1997 and 1996, ComEd had coal reserves of
$282 million and $364 million, respectively. In prior years, ComEd's
commitments for the purchase of coal exceeded its requirements. Rather than
take all the coal it was required to take, ComEd agreed to purchase the coal
in place in the form of coal reserves. ComEd expects to recover from its
customers the costs of the coal reserves, as coal is used for the generation
of electricity, through base rates. Such fuel costs expected to be recovered
within one year, amounting to $87 million and $73 million at December 31, 1997
and 1996, respectively, have been included in current assets as prepayments
and other on the Consolidated Balance Sheets. ComEd expects to fully recover
the costs of the coal reserves before the year 2001. See Note 23 for
additional information concerning ComEd's coal commitments.
 
  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 8 million as of December
31, 1997. It includes the city of Chicago, an area of about 225 square miles
with an estimated population of approximately 3 million from which ComEd
derived approximately one-third of its ultimate consumer revenues in 1997.
ComEd had 3.4 million electric customers at December 31, 1997.
 
  In 1997, ComEd changed its accounting method for revenue recognition to
record ComEd's 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. See Note 3 for information regarding the
cumulative effect of a change in accounting principle on prior years and the
effect on the current year. See Note 2 for information regarding the expected
effects of the August 1, 1998 rate reduction and certain pricing experiments.
 
  Depreciation and Decommissioning. Depreciation is provided on the straight-
line basis by amortizing the cost of depreciable plant and equipment over
estimated composite service lives. Non-nuclear plant and equipment is
depreciated at annual rates developed for each class of plant based on their
composite service lives. Provisions for depreciation were at average annual
rates of 3.36%, 3.25% and 3.14% for the years 1997, 1996 and 1995,
respectively, of average depreciable utility plant and equipment, including
the effects of additional depreciation on ComEd's nuclear generating units.
The annual rate for nuclear plant and equipment, excluding separately
collected decommissioning costs and additional depreciation, is 2.88%. The
additional depreciation on ComEd's nuclear generating units includes
depreciation recorded for the year 1997 related to its steam generators at
Byron Unit 1 and Braidwood Unit 1 of $59 million, which are expected to be
replaced prior to year-end 1998, and the 1996 additional depreciation
initiative of $30 million. See Note 4 for additional information on the 1996
additional depreciation initiative.
 
  Nuclear plant decommissioning costs 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
 
                                     C-29
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
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 "Decommissioning" under "Management's
Discussion and Analysis of Financial Condition and Results of Operations,"
subcaption "Results of Operations," 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 related generating station. The accrual for decommissioning is
based on the prompt removal method authorized by NRC guidelines. ComEd's 10
operating units have remaining current NRC license lives ranging from 8 to 30
years. ComEd's Zion Station and its first nuclear unit, Dresden Unit 1, are
retired and are expected to be dismantled at the end of the current NRC
license life of the last unit at each of those stations, which is consistent
with the regulatory treatment for the related decommissioning costs.
 
  Based on ComEd's most recent study, decommissioning costs, including the
cost of decontamination and dismantling, are estimated to aggregate $4.8
billion in current-year (1998) dollars, including a contingency allowance.
ComEd estimates that it will expend approximately $12.9 billion, including a
contingency allowance, for decommissioning costs primarily during the period
from 2007 through 2032. 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.
 
  Pursuant to the Rate Order, since 1995, ComEd has collected decommissioning
costs from its ratepayers in conjunction with a rider, which allows annual
adjustments to decommissioning cost collections outside the context of a
traditional rate proceeding. Recovery of decommissiong costs through the rider
will continue under the 1997 Act. The current estimated decommissioning costs
include a contingency allowance. 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. Under its most recent annual rider,
filed with the ICC on February 28, 1997, ComEd has proposed to decrease its
estimated annual decommissioning cost accrual from $108.8 million to $107.5
million. The reduction primarily reflects stronger than expected after-tax
returns on the external trust funds in 1996 and lower than expected escalation
in low-level waste disposal costs, partially offset by the higher current-year
cost estimates, which include a contingency allowance.
 
  The proposed annual decommissioning cost accrual of $107.5 million was
determined using the following assumptions: the decommissioning cost estimate
of $4.8 billion in current-year (1998) dollars, after-tax earnings on the tax-
qualified and nontax-qualified decommissioning funds of 7.30% and 6.26%,
respectively, and an escalation rate for future decommissioning costs of 4.1%.
The annual accrual of $107.5 million 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 approximately
$12.9 billion.
 
  For the 10 operating nuclear units, decommissioning costs 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 of December 31, 1997, the total decommissioning costs
included in the accumulated provision for depreciation were $1,570 million.
 
                                     C-30
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
For ComEd's retired nuclear unit, Dresden Unit 1, the total estimated
liability at December 31, 1997 in current-year (1998) dollars of $365 million
was recorded under nuclear decommissioning for retired plants and the
unrecovered portion of the liability of $268 million was recorded as a
regulatory asset on the Consolidated Balance Sheets. The increase from
December 31, 1996 to December 31, 1997 in the total estimated liability
related to Dresden Unit 1, and the unrecovered portion of that liability, is
due to higher current-year cost estimates, which include a contingency
allowance.
 
  For ComEd's retired Zion nuclear station, the total estimated liability at
December 31, 1997 in current-year (1998) dollars of $936 million was recorded
under nuclear decommissioning for retired plants and the unrecovered portion
of the liability of $580 million was recorded as a regulatory asset on the
Consolidated Balance Sheets.
 
  Under Illinois law, decommissioning cost collections are required to be
deposited into external trusts; and, 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. At December 31, 1997, the
past accruals that are required to be contributed to the external trusts
aggregate $167 million. The fair value of funds accumulated in the external
trusts at December 31, 1997 was $1,856 million, which includes pre-tax
unrealized appreciation of $429 million. The earnings on the external trusts
accumulate in the fund balance and accumulated provision for depreciation.
 
  Income Taxes. ComEd is included in the consolidated federal and state income
tax returns filed by Unicom. Current and deferred income taxes of the
consolidated group are allocated to ComEd as if ComEd filed separate tax
returns. 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 timing 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. 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. 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 9.39%, 9.02% and 9.52% for the years
1997, 1996 and 1995, respectively. AFUDC does not contribute to the current
cash flow of ComEd. ComEd discontinued SFAS No. 71 regulatory accounting
practices in December 1997 for the generation portion of its business. As a
result, ComEd will not record AFUDC, but will capitalize interest costs on its
generation-related construction work in progress and nuclear fuel in process
beginning in 1998.
 
  Interest. Total interest costs incurred on debt, leases and other
obligations were $588 million, $620 million and $693 million for the years
1997, 1996 and 1995, respectively.
 
  Debt Discount, Premium and Expense. Discount, premium and expense on long-
term debt are being amortized over the lives of the respective issues.
 
  Loss on Reacquired Debt. Consistent with regulatory treatment, the net loss
from reacquisition in connection with the refinancing of first mortgage bonds,
sinking fund debentures and pollution control
 
                                     C-31
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
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 2 for additional information.
 
  Stock Option Awards/Employee Stock Purchase Plan. ComEd has elected to adopt
SFAS No. 123, Accounting for Stock-Based Compensation, for disclosure purposes
only. ComEd 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.
 
  Energy Risk Management Contracts. In the normal course of business ComEd
utilizes contracts for the forward sale and purchase of energy to effectively
manage 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 recognized immediately for contracts with terms of less than one year and
are amortized over the length of the term of contracts covering more than one
year.
 
  Reclassifications. Certain prior year amounts have been reclassified to
conform with current period presentation. These reclassifications had no
effect on operating results.
 
  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, are considered to be
cash equivalents. Supplemental cash flow information for the years 1997, 1996
and 1995 was as follows:
 
<TABLE>
<CAPTION>
                                                       1997     1996     1995
                                                     -------- -------- --------
                                                       (THOUSANDS OF DOLLARS)
<S>                                                  <C>      <C>      <C>
Supplemental Cash Flow Information:
 Cash paid during the year for:
   Interest (net of amount capitalized)............  $502,260 $533,498 $604,202
   Income taxes (net of refunds)...................  $280,368 $238,920 $368,842
Supplemental Schedule of Non-Cash Investing and
 Financing Activities:
 Capital lease obligations incurred................  $158,412 $320,975 $198,577
</TABLE>
 
(2) ACCOUNTING EFFECTS RELATED TO THE 1997 ACT
 
  On December 16, 1997, the Governor of Illinois signed into law the 1997 Act,
which, as it applies to ComEd, provides for, among other things, a 15%
residential base rate reduction commencing August 1, 1998, an additional 5%
residential base rate reduction commencing May 1, 2002, and customer access to
other electric suppliers in a phased-in process. Access for commercial and
industrial customers will occur over a period from October 1999 to December
2000, and access for residential customers will occur after May 1, 2002. The
15% residential base rate reduction, commencing on August 1, 1998, is expected
to reduce ComEd's operating revenues by approximately $160 million and $375
million in 1998 and 1999, respectively, compared to 1997 rate levels. ComEd is
engaged in certain pricing experiments contemplated by the 1997 Act, which are
expected to reduce its operating revenues by approximately $30 million and $60
million in 1998 and 1999, respectively, compared to 1997 rate levels,
notwithstanding the effects of customer growth.
 
                                     C-32
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
 
   The 1997 Act also provides for the collection of a CTC from customers who
choose another electric service provider during a transition period that
extends through 2006, and can be extended through 2008 with ICC approval if
certain factors are met. The CTC will be established in accordance with a
formula defined in the legislation. The CTC, which will be applied on a cents
per kilowatthour basis, considers the revenue which would have been collected
from a customer under tariffed rates, reduced by 1) the revenue the utility
will receive for providing delivery services to the customer, 2) the market
price for electricity and 3) a defined mitigation factor which represents the
utility's opportunity to develop new revenue sources and achieve cost savings.
 
  Notwithstanding these 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 authority. Under the earnings
provision of the legislation, if the earned return on common equity of a
utility during this period exceeds an established threshold, a portion of the
excess earnings must be refunded to customers. A utility may request a rate
increase during the rate freeze period when necessary to ensure the utility's
financial viability, but not before January 1, 2000.
 
  Under 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 an alternative energy supplier 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 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 option to eliminate the FAC, 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.
 
  The 1997 Act also allows ComEd to unbundle a portion of its future revenues,
including tariffed and contract rates and CTC revenues and issue securities
backed by these revenues. The proceeds from such security issuances must
generally be used to refinance outstanding debt or equity or for certain other
limited purposes. The total amount of ComEd's revenues securitized cannot
exceed $6.5 billion; approximately one-half of that amount can be issued in
the twelve-month period commencing on August 1, 1998.
 
  As a result of the 1997 Act, prices for the supply of electric generation
are expected to transition from cost-based, regulated rates to rates
determined by competitive market forces. The CTC allows ComEd to recover a
portion of any 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
include cost control efforts and developing new sources of revenue.
 
  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 is not probable that
 
                                     C-33
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
such costs will 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 a
charge of $810 million (after-tax). These costs relate principally to
previously incurred costs originally expected to be collected through future
revenues, including income tax benefits previously flowed through to
customers, deferred carrying charges on the Byron Unit 2 and Braidwood Units 1
and 2 nuclear generating plants, generation-related unamortized loss on
reacquired debt and other miscellaneous generation-related costs. The
regulatory asset for the unrecovered nuclear decommissioning costs of
currently retired nuclear plants was not written off, as the 1997 Act provides
for the ongoing recovery of decommissioning costs through regulated rates. See
"Regulatory Assets and Liabilities" and "Depreciation and Decommissioning" in
Note 1 of Notes to Financial Statements.
 
  Pursuant to an option contained in the 1997 Act, ComEd filed a tariff on
December 16, 1997 to eliminate its FAC as of January 1, 1997. Under ComEd's
regulated rates, the FAC provided for the recovery of changes in fossil and
nuclear fuel costs and the energy portion of purchased power costs as compared
to the fuel and purchased energy costs included in ComEd's base rates.
Elimination of the FAC requires ComEd to refund to customers any net FAC
charges billed from January 1, 1997 through December 31, 1997. Such FAC
charges were $25 million (after-tax). These costs, as well as deferred
underecovered energy costs of $19 million (after- tax) which ComEd would have
been entitled to recover if the FAC had remained in effect, were recorded as a
reduction to operating results in 1997.
 
  Additionally, elimination of the FAC and a transition to market-based
pricing for generation-related costs required ComEd to write down its
investment in uranium-related properties. Current projections of the market
price for uranium indicate that the expected incremental costs of mining and
milling uranium at such properties will exceed the expected market price for
uranium. Such costs are not expected to be recoverable in a competitive
market. A write down of ComEd's investment in uranium-related properties to
realizable value resulted in a charge of $60 million (after-tax) in December
1997.
 
  SFAS No. 121, Accounting for the Impairment of Long-Lived Assets and for
Long-Lived Assets to Be Disposed Of, which was adopted on January 1, 1996,
established accounting standards for the impairment of long-lived assets,
i.e., determining whether the costs of such assets are recoverable through
future revenues. SFAS No. 121 also requires that regulatory assets, which are
no longer probable of recovery through future revenue, be charged to
operations. ComEd evaluated whether the recoverability of the costs of its
generating stations has been impaired as defined in SFAS No. 121. This
evaluation was conducted to determine whether future revenues expected to be
recovered from electric supply services will be sufficient to cover the costs
of its generating assets. Notwithstanding the retirement and write-off of Zion
Station, as discussed in Note 5, ComEd has concluded, as a result of these
studies, that impairment, as defined in SFAS No. 121, does not currently exist
and that asset write downs are not necessary at this time. However, ComEd is
engaged in an ongoing examination of its assets and operations. If ComEd
retires or closes one or more additional generating plants prior to expected
retirement dates, further write-offs will be required.
 
(3) CUMULATIVE EFFECT OF A CHANGE IN ACCOUNTING PRINCIPLE
 
  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
by $170 million (after-tax), consisting of a one-time cumulative effect of the
change
 
                                     C-34
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
for years prior to 1997 of $197 million (after-tax), less the impact of the
change on 1997 results of $27 million (after-tax). The following pro forma
information reflects the financial results for the years 1997, 1996 and 1995
as if the new accounting method had been used in such periods (unaudited):
 
<TABLE>
<CAPTION>
                                                     1997        1996     1995
                                                  -----------  -------- --------
                                                   (THOUSANDS EXCEPT PER SHARE
                                                              DATA)
<S>                                               <C>          <C>      <C>
Net Income (Loss) Before Extraordinary Items and
 Cumulative Effect of Change in Accounting
 Principle......................................  $  (160,138) $775,497 $760,331
Net Income (Loss) on Common Stock...............  $(1,030,959) $711,073 $670,348
</TABLE>
 
(4) RATE MATTERS
 
  In January 1995, the ICC issued its Rate Order in the proceedings relating
to ComEd's February 1994 rate increase request. The Rate Order provided, among
other things, for an increase in ComEd's total revenues of approximately $302
million (excluding add-on revenue taxes), on an annual basis. The rates
provided in the Rate Order became effective on January 14, 1995; however, they
are being collected subject to refund as a result of subsequent judicial
action. The Rate Order was appealed by intervenors and ComEd to the Illinois
Appellate Court, which issued a decision on May 30, 1997 affirming the Rate
Order in all respects with the exception of two issues, which it remanded to
the ICC for the purpose of providing further analysis. Those issues relate to:
(i) the manner in which certain costs are recovered and which customers should
pay those costs, and (ii) the proper rate of return on common equity for
ComEd. ComEd believes that the ICC can satisfy the Appellate Court's remand
directions on the basis of the existing record from the ICC proceedings which
led to the Rate Order. The Appellate Court's decision was not appealed and the
matter was returned to the ICC, where a decision is expected early in the
second quarter of 1998.
 
  With respect to the first issue remanded to the ICC, ComEd does not believe
it will have any effect on the overall level of rates. With respect to the
rate of return on common equity issue, the ICC had determined in the Rate
Order that ComEd's cost of common equity was 12.28%. Intervenors had submitted
testimony recommending a return on common equity of 11.50%. The Appellate
Court decision requires the ICC to clarify the basis for certain of its
findings relating to its rejection of the intervenors' recommendation and to
analyze further how it arrived at its conclusions. The Appellate Court stated
that after reanalyzing these bases the ICC can determine whether or not the
cost of common equity determination it adopted should still be followed. Each
tenth of one percent change in the rate of return on common equity has
approximately an $8 million effect on the level of annual revenues. The
Appellate Court's decision does not have any immediate effect on ComEd's rates
or require any refunds. In connection with the initiation of the appeal, ComEd
committed to make refunds "in the event that a final, non-appealable order is
entered reversing the ICC's Rate Order." Revenues of approximately $195
million would be subject to refund if the ICC were to adopt the lower rate of
return on common equity recommended by intervenors. An ICC Hearing Examiner
issued a proposed order in January 1998, which if adopted by the ICC, would
uphold the Rate Order and the associated $302 million revenue increase on an
annual basis.
 
  ComEd's costs increased by $30 million in 1996 (before income tax effects)
for an increase in depreciation charges on its nuclear generating units
related to its additional depreciation initiative in 1996. See Note 1 under
"Depreciation and Decommissioning" for information concerning additional
depreciation charges related to ComEd's steam generators at Byron Unit 1 and
Braidwood Unit 1.
 
  See Note 2 for information regarding the 1997 Act.
 
                                     C-35
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
(5) CLOSURE AND SALE OF PLANTS
 
  On January 14, 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 for 1997 of $523 million (after-tax). The
decision to close Zion Station was a result of an ongoing analysis, which
ComEd performed regarding the economic value of its generating assets in light
of the expected changes in the manner in which electric energy is marketed and
sold. The passage of the 1997 Act provided a clearer basis for evaluating the
costs and benefits of alternative courses of action. In reaching the decision
to cease nuclear generation operations at Zion Station, the Boards also
considered the significant uncertainty associated with continued operation of
the station due to the degradation of the steam generators, and the expected
operating costs associated with continued station operation.
 
  ComEd's fourth quarter 1997 financial results reflected a charge of $406
million (after-tax) representing the undepreciated costs of Zion Station
(excluding the portion which will remain in use to provide voltage support),
materials and supplies inventories, and nuclear fuel inventories. In addition,
as required by GAAP, a liability for future closing costs associated with the
retirement of Zion Station, excluding severance costs, was recorded resulting
in a charge of $117 million (after-tax) in the fourth quarter of 1997.
 
  In April 1996, ComEd announced that it had finalized agreements to sell 2 of
its coal-fired generating stations, representing 1,600 megawatts of generating
capacity. Under the agreements, State Line and Kincaid stations are expected
to be sold for a total of $250 million, which approximates the book value of
the stations. The net proceeds are expected to be approximately $200 million
(after-tax), which will be used to retire or redeem existing debt. Under the
terms of the sales, ComEd will enter into exclusive 15-year purchased power
agreements for the output of the plants. On March 31, 1997, the ICC issued an
order approving the agreements. A subsequent appeal has been dropped by the
intervening parties. The sale of State Line Station for its approximate book
value was finalized in December 1997. The net proceeds of the sale, after
income tax effects and closing costs, were approximately $56 million. The
Kincaid Station sale is expected to be finalized during the first quarter of
1998.
 
(6) AUTHORIZED SHARES AND VOTING RIGHTS OF CAPITAL STOCK
 
  At December 31, 1997, the authorized shares of capital stock were: common
stock--250,000,000 shares; preference stock--22,368,560 shares; $1.425
convertible preferred stock--65,912 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
shares at any time outstanding, regardless of class, are entitled to one vote
for each share held on each matter submitted to a vote at a meeting of
shareholders, with the right to cumulate votes in all elections for directors.
 
(7) COMMON EQUITY
 
  At December 31, 1997, shares of common stock were reserved for the following
purposes:
 
<TABLE>
      <S>                                                                 <C>
      Conversion of $1.425 convertible preferred stock................... 67,230
      Conversion of warrants............................................. 25,622
                                                                          ------
                                                                          92,852
                                                                          ======
</TABLE>
 
                                     C-36
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
 
  Common stock for the years 1997, 1996 and 1995 was issued as follows:
 
<TABLE>
<CAPTION>
                                                             1997   1996  1995
                                                             ----- ------ -----
      <S>                                                    <C>   <C>    <C>
      Conversion of $1.425 convertible preferred stock...... 9,261 22,146 3,630
      Conversion of warrants................................   362  1,358   299
                                                             ----- ------ -----
                                                             9,623 23,504 3,929
                                                             ===== ====== =====
</TABLE>
 
  At December 31, 1997 and 1996, 76,868 and 78,045 common stock purchase
warrants, respectively, were outstanding. The warrants entitle the holders to
convert such warrants into common stock at a conversion rate of one share of
common stock for three warrants.
 
  ComEd's retained earnings account had a deficit balance of $19.2 million at
December 31, 1997. As of December 31, 1997, $384 million of retained earnings
has 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 will expire ten years from the 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 and will also vest in
full upon a change in control of Unicom.
 
  Stock options transactions for the years 1997 and 1996 are summarized as
follows:
 
<TABLE>
<CAPTION>
                                                                        WEIGHTED
                                                                        AVERAGE
                                                              OPTIONS    PRICE
                                                             ---------  --------
      <S>                                                    <C>        <C>
      Outstanding at the beginning of 1996..................       --   $   --
      Granted during the year............................... 1,205,500   25.500
      Expired/cancelled during the year.....................   (17,500)  25.500
                                                             ---------
      Outstanding as of December 31, 1996................... 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.....................  (213,549)  23.649
                                                             ---------
      Outstanding as of December 31, 1997................... 2,290,378   23.809
                                                             =========
</TABLE>
 
  Of the stock options outstanding at December 31, 1997, 426,174 have vested
at a weighted average price of $25.455.
 
  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
                                                                 ---------------
                                                                  1997    1996
                                                                 ------- -------
      <S>                                                        <C>     <C>
      Expected option life...................................... 7 years 7 years
      Dividend yield............................................   7.20%   6.30%
      Expected volatility.......................................  22.29%  20.98%
      Risk-free interest rate...................................   6.25%   6.64%
</TABLE>
 
                                     C-37
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
 
  The estimated fair value for each stock option granted in 1997 and 1996 was
$2.79 and $3.74, respectively.
 
  The ESPP allows employees to purchase Unicom common stock at a 10% discount
from market value. Substantially all of the employees of Unicom, ComEd and
certain subsidiaries are eligible to participate in the ESPP. Unicom issued
196,003, 196,513 and 217,080 shares of common stock in 1997, 1996 and 1995,
respectively, under the ESPP at a weighted average annual purchase price of
$19.15, $23.52 and $25.34, respectively.
 
  ComEd has adopted the disclosure-only provisions of SFAS No. 123. For
financial reporting purposes, ComEd has adopted APB No. 25 and thus no
compensation cost has been recognized for the stock option awards program or
ESPP. If ComEd 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 effect on
operating results would have been immaterial.
 
(9) PREFERRED AND PREFERENCE STOCKS WITHOUT MANDATORY REDEMPTION REQUIREMENTS
 
  No shares of preferred or preference stocks without mandatory redemption
requirements were issued or redeemed during 1997, 1996 and 1995. The series of
preference stock without mandatory redemption requirements outstanding at
December 31, 1997 are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                         INVOLUNTARY
                     SHARES           AGGREGATE         REDEMPTION       LIQUIDATION
      SERIES       OUTSTANDING       STATED VALUE        PRICE(1)         PRICE(1)
      -------      -----------       ------------       ----------       -----------
                                      (THOUSANDS
                                     OF DOLLARS)
      <S>          <C>               <C>                <C>              <C>
      $1.90         4,249,549          $106,239          $ 25.25           $25.00
      $2.00         2,000,000            51,560          $ 26.04           $25.00
      $1.96         2,000,000            52,440          $ 27.11           $25.00
      $7.24           750,000            74,340          $101.00           $99.12
      $8.40           750,000            74,175          $101.00           $98.90
      $8.38           750,000            73,566          $100.16           $98.09
      $2.425        3,000,000            72,637          $ 25.00           $25.00
                   ----------          --------
                   13,499,549          $504,957
                   ==========          ========
</TABLE>
     --------
     (1) Per share plus accrued and unpaid dividends, if any.
 
  The outstanding shares of $1.425 convertible preferred stock are convertible
at the option of the holders thereof, at any time, into common stock 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.
 
                                     C-38
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
(10) PREFERENCE STOCK SUBJECT TO MANDATORY REDEMPTION REQUIREMENTS
 
  During 1997, 1996 and 1995, no shares of preference stock subject to
mandatory redemption requirements were issued. The series of preference stock
subject to mandatory redemption requirements outstanding at December 31, 1997
are summarized as follows:
 
<TABLE>
<CAPTION>
                  SHARES     AGGREGATE
    SERIES      OUTSTANDING STATED VALUE          OPTIONAL REDEMPTION PRICE(1)
- --------------  ----------- ------------ -----------------------------------------------
                             (THOUSANDS
                            OF DOLLARS)
<S>             <C>         <C>          <C>
$8.20              178,560    $ 17,856   $101
$8.40 Series B     300,000      29,798   $101
$8.85              225,000      22,500   $103 through July 31, 1998; and $101 thereafter
$9.25              525,000      52,500   $103 through July 31, 1999; and $101 thereafter
$9.00              130,000      12,887   Non-callable
$6.875             700,000      69,475   Non-callable
                 ---------    --------
                 2,058,560    $205,016
                 =========    ========
</TABLE>
- ---------------------
(1) Per share plus accrued and unpaid dividends, if any.
 
  The annual sinking fund requirements and sinking fund and involuntary
liquidation prices per share of the outstanding series of preference stock
subject to mandatory redemption requirements are summarized as follows:
 
<TABLE>
<CAPTION>
                                              SINKING
                         ANNUAL SINKING         FUND           INVOLUNTARY
          SERIES        FUND REQUIREMENT      PRICE(1)     LIQUIDATION PRICE(1)
      --------------    -----------------     --------     --------------------
      <S>               <C>                   <C>          <C>
      $8.20              35,715 shares          $100             $100.00
      $8.40 Series B     30,000 shares(2)       $100             $ 99.326
      $8.85              37,500 shares          $100             $100.00
      $9.25              75,000 shares          $100             $100.00
      $9.00             130,000 shares(2)       $100             $ 99.125
      $6.875                   (3)              $100             $ 99.25
</TABLE>
     --------
     (1) Per share plus accrued and unpaid dividends, if any.
     (2) ComEd has a non-cumulative option to increase the annual
         sinking fund payment on each sinking fund redemption date
         to retire an additional number of shares, not in excess of
         the sinking fund requirement, at the applicable redemption
         price.
     (3) All shares are required to be redeemed on May 1, 2000.
 
  Annual remaining sinking fund requirements through 2002 on preference stock
outstanding at December 31, 1997 will aggregate $31 million in 1998, $18
million in 1999, $88 million in 2000, and $18 million in each of 2001 and
2002. During each of 1997 and 1996 438,215 shares and during 1995 178,215
shares of preference stock subject to mandatory redemption requirements were
reacquired to meet sinking fund requirements.
 
  Sinking fund requirements due within one year are included in current
liabilities.
 
(11) COMPANY-OBLIGATED MANDATORILY REDEEMABLE PREFERRED SECURITIES OF
    SUBSIDIARY TRUSTS HOLDING SOLELY THE COMPANY'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% company-obligated mandatorily redeemable
preferred securities. The sole asset of the 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-
 
                                     C-39
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
owned subsidiary trust of ComEd, issued 150,000 of its 8.50% company-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 10 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 subordinate 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.
 
(12) LONG-TERM DEBT
 
  Sinking fund requirements and scheduled maturities remaining through 2002
for first mortgage bonds, sinking fund debentures and other long-term debt
outstanding at December 31, 1997, after deducting sinking fund debentures
reacquired for satisfaction of future sinking fund requirements, are
summarized as follows: 1998--$503 million; 1999--$150 million; 2000--$462
million; 2001--$108 million; and 2002--$305 million.
 
  At December 31, 1997, outstanding first mortgage bonds maturing through 2002
were as follows:
 
<TABLE>
<CAPTION>
             SERIES                                         PRINCIPAL AMOUNT
             ------                                      ----------------------
                                                         (THOUSANDS OF DOLLARS)
      <S>                                                <C>
      6 1/4% due February 1, 1998.......................       $   50,000
      6% due March 15, 1998.............................          130,000
      6 3/4% due July 1, 1998...........................           50,000
      6 3/8% due October 1, 1998........................           75,000
      9 3/8% due February 15, 2000......................          125,000
      6 1/2% due April 15, 2000.........................          230,000
      6 3/8% due July 15, 2000..........................          100,000
      7 1/2% due January 1, 2001........................          100,000
      7 3/8% due September 15, 2002.....................          200,000
                                                               ----------
                                                               $1,060,000
                                                               ==========
</TABLE>
 
                                     C-40
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  Other long-term debt outstanding at December 31, 1997 is summarized as
follows:
 
<TABLE>
<CAPTION>
                                            PRINCIPAL
 DEBT SECURITY                                AMOUNT                                   INTEREST RATE
 -------------                              ----------             ------------------------------------------------------
                                            (THOUSANDS
                                                OF
                                             DOLLARS)
 <S>                                        <C>                    <C>
 Notes:
  Medium Term Notes, Series 1N
   due various dates through
   April 1, 1998                            $   35,500             Interest rates ranging from 9.52% to 9.65%
  Medium Term Notes, Series 3N
   due various dates through
   October 15, 2004                            296,000             Interest rates ranging from 9.00% 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%
                                            ----------
                                            $  866,500
                                            ----------
 Long-Term Notes Payable to
  Bank due June 1, 1998                     $  150,000             Prevailing interest rate of 6.53% at December 31, 1997
                                            ----------
 Purchase Contract Obligation
  due April 30, 2005                        $      389             Interest rate of 3.00%
                                            ----------
                                            $1,016,889
                                            ==========
</TABLE>
 
  Long-term debt maturing within one year has been included in current
liabilities.
 
  The outstanding first mortgage bonds are secured by a lien on substantially
all property and franchises, other than expressly excepted property, owned by
ComEd.
 
  ComEd recorded an extraordinary loss of $33 million in the fourth quarter of
1995 related to the early redemption of $645 million of long-term debt which
resulted in a charge of $20 million, after reflecting income tax effects of
$13 million.
 
(13) LINES OF CREDIT
 
  ComEd had total bank lines of credit of $766 million and unused bank lines
of credit of $758 million at December 31, 1997. Of that amount, $758 million
(of which $146 million expires on September 27, 1998, $27 million expires in
equal quarterly installments commencing on March 31, 1998 and ending on
September 30, 1998 and $585 million expires in equal quarterly installments
commencing on March 31, 1998 and ending on September 30, 1999) may be borrowed
on secured or unsecured notes of ComEd at various interest rates. 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. Amounts
under the remaining lines of credit may be borrowed at prevailing prime
interest rates on unsecured notes of ComEd. Collateral, if required for the
borrowings, would consist of first mortgage bonds issued under and in
accordance with the provisions of ComEd's mortgage. ComEd is obligated to pay
commitment fees with respect to the unused portion of such lines of credit.
 
                                     C-41
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
(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 signed 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 beginning not later than January 1998. The DOE advised ComEd in
December 1996 that it anticipated it would be unable to begin acceptance of
spent nuclear fuel by January 1998. It is expected this delivery schedule will
be delayed significantly. Extended delays in spent nuclear fuel acceptance by
the DOE would lead to ComEd's consideration of costly storage alternatives.
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. As
provided for under 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.
 
(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 ComEd 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 ComEd and subsidiary companies is in part
dependent on the treatment authorized under future 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, 1997 and 1996 was
as follows:
 
<TABLE>
<CAPTION>
                                DECEMBER 31, 1997                DECEMBER 31, 1996
                         -------------------------------- --------------------------------
                                                                     UNREALIZED
                                    UNREALIZED                         GAINS
                         COST BASIS   GAINS    FAIR VALUE COST BASIS  (LOSSES)  FAIR VALUE
                         ---------- ---------- ---------- ---------- ---------- ----------
                                              (THOUSANDS OF DOLLARS)
<S>                      <C>        <C>        <C>        <C>        <C>        <C>
Short-term investments.. $   33,524  $      2  $   33,526 $   32,778  $     38  $   32,816
U.S. Government and
 Agency issues..........    170,240    15,882     186,122    251,994     6,885     258,879
Municipal bonds.........    306,104    20,598     326,702    331,936    17,985     349,921
Corporate bonds.........    231,738     4,293     236,031     22,405       (54)     22,351
Common stock............    667,657   385,851   1,053,508    539,392   201,304     740,696
Other...................     17,300     2,508      19,808     47,462     4,235      51,697
                         ----------  --------  ---------- ----------  --------  ----------
                         $1,426,563  $429,134  $1,855,697 $1,225,967  $230,393  $1,456,360
                         ==========  ========  ========== ==========  ========  ==========
</TABLE>
 
  At December 31, 1997, 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.......................................  $ 33,699   $ 33,702
      1 through 5 years...................................   162,558    166,427
      5 through 10 years..................................   219,201    232,508
      Over 10 years.......................................   335,538    359,411
</TABLE>
 
                                     C-42
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  The net earnings of the nuclear decommissioning funds, which are recorded as
increases to the accumulated provision for depreciation, for the years 1997,
1996 and 1995 were as follows:
 
<TABLE>
<CAPTION>
                                            1997         1996         1995
                                         -----------  -----------  -----------
                                               (THOUSANDS OF DOLLARS)
<S>                                      <C>          <C>          <C>
Gross proceeds from sales of securi-
 ties..................................  $ 2,163,522  $ 2,335,974  $ 2,598,889
Less cost based on specific identifica-
 tion..................................   (2,088,300)  (2,300,038)  (2,581,714)
                                         -----------  -----------  -----------
Realized gains on sales of securities..  $    75,222  $    35,936  $    17,175
Other realized fund earnings net of
 expenses..............................       39,123       33,008       46,294
                                         -----------  -----------  -----------
Total realized net earnings of the
 funds.................................  $   114,345  $    68,944  $    63,469
Unrealized gains.......................      198,741       65,516      160,843
                                         -----------  -----------  -----------
 Total net earnings of the funds.......  $   313,086  $   134,460  $   224,312
                                         ===========  ===========  ===========
</TABLE>
 
  Current Assets. Cash, temporary cash investments and other cash investments,
which include U.S. Government obligations and other short-term marketable
securities, and special deposits, which primarily includes cash deposited for
the redemption, refund or discharge of debt securities, 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 preferred and preference
stocks, company-obligated mandatorily redeemable preferred securities of the
Trusts 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, 1997 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                 DECEMBER 31, 1997                DECEMBER 31, 1996
                          -------------------------------- --------------------------------
                           CARRYING  UNREALIZED             CARRYING  UNREALIZED
                            VALUE      LOSSES   FAIR VALUE   VALUE      LOSSES   FAIR VALUE
                          ---------- ---------- ---------- ---------- ---------- ----------
                                               (THOUSANDS OF DOLLARS)
<S>                       <C>        <C>        <C>        <C>        <C>        <C>
Preferred and preference
 stocks.................  $  712,069  $ 11,970  $  724,039 $  755,931  $  3,948  $  759,879
Company-obligated
 mandatorily redeemable
 preferred securities of
 the Trusts holding
 solely ComEd's
 subordinated debt
 securities.............  $  350,000  $ 21,701  $  371,701 $  200,000  $  1,000  $  201,000
Long-term debt..........  $5,913,942  $380,890  $6,294,832 $6,345,533  $159,818  $6,505,351
</TABLE>
 
  Long-term notes payable, which are not included in the above table, amounted
to $150 million at December 31, 1997 and 1996. 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.
 
  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
portions 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, 1997 and 1996; therefore, the carrying value is equal to the fair
value.
 
                                     C-43
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
(16) PENSION BENEFITS
 
  As of December 31, 1997, ComEd and the Indiana Company had qualified non-
contributory defined benefit pension plans which cover all regular employees.
Benefits under these plans reflect each employee's compensation, years of
service and age at retirement. During 1995, these plans were amended to more
closely base retirement benefits on final pay. 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, 1997 and 1996 pension liabilities and related data were determined using
the January 1, 1997 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. On January 19, 1998,
the Indiana Company plan was merged into the ComEd pension plan as a result of
the sale of the Indiana Company's State Line Station.
 
  The funded status of these plans, including the supplemental plan, at
December 31, 1997 and 1996 was as follows:
 
<TABLE>
<CAPTION>
                                                             DECEMBER 31
                                                       ------------------------
                                                          1997         1996
                                                       -----------  -----------
                                                       (THOUSANDS OF DOLLARS)
<S>                                                    <C>          <C>
Actuarial present value of accumulated pension plan
 benefits:
 Vested benefit obligation...........................  $(3,472,000) $(3,075,000)
 Nonvested benefit obligation........................     (140,000)    (118,000)
                                                       -----------  -----------
 Accumulated benefit obligation......................  $(3,612,000) $(3,193,000)
 Effect of projected future compensation levels......     (462,000)    (386,000)
                                                       -----------  -----------
 Projected benefit obligation........................  $(4,074,000) $(3,579,000)
Fair value of plan assets, invested primarily in U.S.
 Government, government-sponsored corporation and
 agency securities, fixed income funds, registered
 investment companies, equity index funds and other
 equity and fixed income funds.......................    3,706,000    3,281,000
                                                       -----------  -----------
Plan assets less than projected benefit obligation...  $  (368,000) $  (298,000)
Unrecognized prior service cost......................      (64,000)     (69,000)
Unrecognized transition asset........................     (114,000)    (130,000)
Unrecognized net loss................................      132,000      113,000
                                                       -----------  -----------
 Accrued pension liability...........................  $  (414,000) $  (384,000)
                                                       ===========  ===========
</TABLE>
 
  The fair value of plan assets excludes $17 million held in grantor trust as
of December 31, 1997 for payments of benefits under the supplemental plan.
 
  The assumed discount rate was 7.0% and 7.5% at December 31, 1997 and 1996,
respectively, and the assumed annual rate of increase in future compensation
levels was 4.0%. These rates were used in determining the projected benefit
obligations, the accumulated benefit obligations and the vested benefit
obligations.
 
  Pension costs were determined under the projected unit credit actuarial cost
method and the following actuarial assumptions for the years 1997, 1996 and
1995:
<TABLE>
<CAPTION>
                                                               1997  1996  1995
                                                               ----- ----- -----
<S>                                                            <C>   <C>   <C>
Annual discount rate.......................................... 7.50% 7.50% 8.00%
Annual rate of increase in future compensation levels......... 4.00% 4.00% 4.00%
Annual long-term rate of return on plan assets................ 9.75% 9.75% 9.75%
</TABLE>
 
                                     C-44
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  The components of pension costs, portions of which were recorded as
components of construction costs, for the years 1997, 1996 and 1995 were as
follows:
 
<TABLE>
<CAPTION>
                                                   1997      1996       1995
                                                 --------  ---------  ---------
                                                    (THOUSANDS OF DOLLARS)
<S>                                              <C>       <C>        <C>
Service cost.................................... $100,000  $  93,000  $  87,000
Interest cost on projected benefit obligation...  261,000    247,000    226,000
Actual return on plan assets.................... (630,000)  (421,000)  (681,000)
Curtailment gain................................   (5,000)       --         --
Net amortization and deferral...................  305,000    117,000    419,000
                                                 --------  ---------  ---------
                                                 $ 31,000  $  36,000  $  51,000
                                                 ========  =========  =========
</TABLE>
 
  The curtailment gain for the year 1997 represents the recognition of prior
service costs, the transition asset and the decrease in the projected benefit
obligation related to the sale of the State Line Station by the Indiana
Company.
 
  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. 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 $33 million,
$30 million and $25 million for the years 1997, 1996 and 1995, respectively.
 
(17) POSTRETIREMENT BENEFITS
 
  ComEd and the Indiana Company provide certain postretirement health care,
dental care, vision care and life insurance for retirees and their dependents
and for the surviving dependents of eligible employees and retirees. The
employees become eligible for postretirement benefits when they reach age 55
with 10 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 plan is
contributory, funded jointly by the companies and the participating employees.
The December 31, 1997 and 1996 postretirment benefit liabilities and related
data were determined using the January 1,1997 actuarial valuations.
 
  Postretirement health care costs for the years 1997, 1996 and 1995 included
$8 million, $4 million and $25 million, respectively, related to voluntary
separation offers to certain employees of ComEd and the Indiana Company.
 
  The funded status of the plan at December 31, 1997 and 1996 was as follows:
<TABLE>
<CAPTION>
                                                            DECEMBER 31
                                                      ------------------------
                                                         1997         1996
                                                      -----------  -----------
                                                      (THOUSANDS OF DOLLARS)
<S>                                                   <C>          <C>
Actuarial present value of accumulated
 postretirement benefit obligation:
 Retirees...........................................  $  (573,000) $  (558,000)
 Active fully eligible participants.................      (28,000)     (28,000)
 Other participants.................................     (483,000)    (449,000)
                                                      -----------  -----------
 Accumulated benefit obligation.....................  $(1,084,000) $(1,035,000)
Fair value of plan assets, invested primarily in S&P
 500 common stocks, registered investment companies
 and U.S. Government, government agency, municipal
 and listed corporate obligations...................      768,000      665,000
                                                      -----------  -----------
Plan assets less than accumulated postretirement
 benefit obligation.................................  $  (316,000) $  (370,000)
Unrecognized transition obligation..................      345,000      370,000
Unrecognized prior service cost.....................       52,000       56,000
Unrecognized net gain...............................     (406,000)    (323,000)
                                                      -----------  -----------
 Accrued liability for postretirement benefits......  $  (325,000) $  (267,000)
                                                      ===========  ===========
</TABLE>
 
                                     C-45
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  Different health care cost trends are used for pre-Medicare and post-
Medicare expenses. The pre-Medicare trend rates were 8.5% and 9.0% at December
31, 1997 and 1996, respectively, grading down in 0.5% annual increments and
leveling off at 5.0%. The post-Medicare trend rates were 6.5% and 7.0% at
December 31, 1997 and 1996, respectively, grading down in 0.5% annual
increments to 5.0%. The assumed discount rates were 7.0% and 7.5% at December
31, 1997 and 1996, respectively, which were used to determine the accumulated
benefit obligations. The effect of a 1% increase in the health care cost trend
rate for each future year would increase the accumulated postretirement health
care obligations by approximately $187 million.
 
  The components of postretirement health care costs, portions of which were
recorded as components of construction costs, for the years 1997, 1996 and
1995 were as follows:
 
<TABLE>
<CAPTION>
                                                  1997       1996      1995
                                                ---------  --------  ---------
                                                   (THOUSANDS OF DOLLARS)
      <S>                                       <C>        <C>       <C>
      Service cost............................. $  34,000  $ 32,000  $  31,000
      Interest cost on accumulated benefit
       obligation................................    76,000    73,000     69,000
      Actual return on plan assets.............  (130,000)  (83,000)  (137,000)
      Amortization of transition obligation....    22,000    22,000     23,000
      Severance plan cost......................     8,000     4,000     25,000
      Other....................................    60,000    22,000     83,000
                                                ---------  --------  ---------
                                                $  70,000  $ 70,000  $  94,000
                                                =========  ========  =========
</TABLE>
 
  Postretirement benefit costs were determined using the projected unit credit
actuarial cost method. The discount rates used were 7.5% for the years 1997
and 1996 and 8.0% for the year 1995 and the estimated long-term rate of return
of fund assets, net of income tax effects, were 9.40%, 9.38% and 9.32% for the
years 1997, 1996 and 1995, respectively. Pre-Medicare health care cost trend
rates were 13.5% for the first three months of 1995 and 10% for the remainder
of the year, grading down in 0.5% annual increments to 5.0%. Post-Medicare
health care cost trend rates were 11% for the first three months of 1995 and
8% for the remainder of the year, grading down in 0.5% annual increments to
5.0%. The effect of a 1% increase in the health care cost trend rate for each
future year would increase the aggregate of the service and interest cost
components of postretirement benefit costs by approximately $21 million for
1997.
 
(18) SEPARATION PLAN COSTS
 
  O&M expenses included $39 million, $12 million and $97 million for the years
1997, 1996 and 1995, respectively, for costs related to voluntary separation
offers to certain employees of ComEd and the Indiana Company. Such costs
resulted in charges (after-tax) of $24 million, $7 million and $59 million for
the years 1997, 1996 and 1995, respectively.
 
                                     C-46
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
(19) INCOME TAXES
 
  The components of the net deferred income tax liability at December 31, 1997
and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31
                                                         ----------------------
                                                            1997        1996
                                                         ----------  ----------
                                                             (THOUSANDS OF
                                                               DOLLARS)
<S>                                                      <C>         <C>
Deferred income tax liabilities:
 Accelerated cost recovery and liberalized deprecia-
  tion, net of removal costs...........................  $4,051,191  $3,507,916
 Overheads capitalized.................................     131,509     261,437
 Repair allowance......................................     231,697     228,426
 Regulatory assets recoverable through future rates....     785,354   1,649,037
Deferred income tax assets:
 Postretirement benefits...............................    (305,220)   (269,153)
 Unbilled revenues.....................................         --     (136,406)
 Alternative minimum tax...............................         --      (80,159)
 Unamortized investment tax credits....................    (206,112)   (225,360)
 Regulatory liabilities to be settled through future
  rates................................................    (698,750)   (442,941)
 Nuclear plant closure.................................    (194,244)        --
 Other--net............................................    (135,311)    (43,882)
                                                         ----------  ----------
Net deferred income tax liability......................  $3,660,114  $4,448,915
                                                         ==========  ==========
</TABLE>
 
  The $789 million decrease in the net deferred income tax liability from
December 31, 1996 to December 31, 1997 is comprised of $376 million of
deferred income tax benefits reflected in operations, a $315 million decrease
for an adjustment associated with the write-off of the generation-related net
regulatory assets and a $98 million decrease in other regulatory assets net of
regulatory liabilities pertaining to income taxes for the year. 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.
 
  The components of net income tax expense charged to continuing operations
for the years 1997, 1996 and 1995 were as follows:
 
<TABLE>
<CAPTION>
                                                   1997       1996      1995
                                                 ---------  --------  --------
                                                   (THOUSANDS OF DOLLARS)
<S>                                              <C>        <C>       <C>
Electric operating income:
 Current income taxes..........................  $ 279,636  $339,517  $344,221
 Deferred income taxes.........................     58,655   156,261   188,008
 Investment tax credits deferred--net..........    (31,015)  (33,378)  (28,710)
Other (income) and deductions, primarily
 deferred income taxes in 1997.................   (407,624)   (7,383)   (7,685)
                                                 ---------  --------  --------
Net income taxes charged (credited) to
 continuing operations.........................  $(100,348) $455,017  $495,834
                                                 =========  ========  ========
</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 years 1997, 1996 and 1995:
 
<TABLE>
<CAPTION>
                                                1997        1996        1995
                                              ---------  ----------  ----------
<S>                                           <C>        <C>         <C>
Pre-tax book income (loss) (thousands)....... $(260,486) $1,198,385  $1,233,010
Effective income tax rate....................      38.5%       38.0%       40.2%
</TABLE>
 
                                     C-47
<PAGE>
 
             COMMONWEALTH EDISON COMPANY 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 years 1997, 1996 and 1995 were as follows:
 
<TABLE>
<CAPTION>
                                                    1997       1996      1995
                                                  ---------  --------  --------
                                                    (THOUSANDS OF DOLLARS)
<S>                                               <C>        <C>       <C>
Federal income taxes computed at statutory rate.  $ (91,170) $419,435  $431,554
Equity component of AFUDC which was excluded
 from taxable income............................     (8,320)   (7,272)   (4,595)
Amortization of investment tax credits..........    (53,541)  (33,378)  (28,710)
State income taxes, net of federal income taxes.      3,470    58,381    65,972
Differences between book and tax accounting,
 primarily property-related deductions..........     51,465    14,150    27,534
Other--net......................................     (2,252)    3,701     4,079
                                                  ---------  --------  --------
Net income taxes charged (credited) to
 continuing operations..........................  $(100,348) $455,017  $495,834
                                                  =========  ========  ========
</TABLE>
 
  The effects of an income tax refund related to prior years were recorded in
1996, resulting in a positive impact of $26 million (after-tax).
 
(20) TAXES, EXCEPT INCOME TAXES
 
  Provisions for taxes, except income taxes, for the years 1997, 1996 and 1995
were as follows:
 
<TABLE>
<CAPTION>
                                                       1997     1996     1995
                                                     -------- -------- --------
                                                       (THOUSANDS OF DOLLARS)
      <S>                                            <C>      <C>      <C>
      Illinois public utility revenue............... $228,350 $227,062 $229,546
      Illinois invested capital.....................   99,503  104,663  106,830
      Municipal utility gross receipts..............  168,094  168,715  167,758
      Real estate...................................  150,179  129,985  175,747
      Municipal compensation........................   78,286   78,544   78,602
      Other--net....................................   74,755   73,699   73,543
                                                     -------- -------- --------
                                                     $799,167 $782,668 $832,026
                                                     ======== ======== ========
</TABLE>
 
  ComEd's real estate taxes in 1996 reflect a credit of $23 million which
related to the year 1995.
 
(21) LEASE OBLIGATIONS
 
  Under its nuclear fuel lease arrangement, ComEd may sell and lease back
nuclear fuel from a lessor who may borrow an aggregate of $700 million,
consisting of $300 million of commercial paper/bank borrowings and $400
million of intermediate term notes, to finance the transactions. The
commercial paper/bank borrowing portion of $300 million will expire on
November 23, 1999. With respect to the intermediate term notes, $74 million
expires on November 23, 1998, and an additional portion each November 23
thereafter through November 23, 2003. At December 31, 1997, ComEd's obligation
to the lessor for leased nuclear fuel amounted to approximately $679 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.
 
  Future minimum rental payments, net of executory costs, at December 31, 1997
for capital leases are estimated to aggregate $777 million, including $268
million in 1998, $167 million in 1999, $125 million in 2000, $81 million in
2001, $56 million in 2002 and $80 million in 2003-2005. The estimated interest
component of such rental payments aggregates $100 million. The estimated
portions of obligations due within one year under capital leases of $114
million and $174 million at December 31, 1997 and 1996, respectively, are
included in current liabilities on the Consolidated Balance Sheets.
 
                                     C-48
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  Future minimum rental payments at December 31, 1997 for operating leases are
estimated to aggregate $166 million, including $21 million in 1998, $19
million in 1999, $15 million in 2000, $14 million in 2001, $10 million in 2002
and $87 million in 2003-2024.
 
(22) 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. At December 31, 1997, for its share of ownership in the station,
ComEd had an investment of $669 million in production and transmission plant in
service (before a reduction of $209 million for the related accumulated
provision for depreciation) and $8 million in construction work in progress.
 
(23) COMMITMENTS AND CONTINGENT LIABILITIES
 
  Purchase commitments, principally related to construction and nuclear fuel,
approximated $286 million at December 31, 1997. In addition, ComEd has
substantial commitments for the purchase of coal. ComEd's coal costs are high
compared to those of other utilities. ComEd's western coal contracts and its
rail contracts for delivery of the western coal provide for the purchase of
certain coal at prices substantially above currently prevailing market prices.
See "Management's Discussion and Analysis of Financial Condition and Results
of Operations," subcaption "Liquidity and Capital Resources," for additional
information regarding ComEd's purchase commitments.
 
  ComEd was a member of NML, established to provide insurance coverage against
property damage to members' nuclear generating facilities. NML has merged into
NEIL as of January 1, 1998. ComEd's obligations and coverages have not been
affected by the merger. The members are subject to a retrospective premium
adjustment in the event losses exceed accumulated reserve funds. Capital has
been accumulated in the reserve funds of NML to the extent that ComEd would
not be liable for a retrospective premium adjustment in the event of a single
incident. However, ComEd could be subject to a maximum assessment of
approximately $51 million in any policy year, in the event losses exceed
accumulated reserve funds.
 
  ComEd is a member of NEIL, which provides insurance coverage against the
cost of replacement power obtained during certain prolonged accidental outages
of nuclear generating units and coverage for property losses in excess of $500
million occurring at nuclear stations. 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 of NEIL to
the extent that ComEd would not be liable for a retrospective premium
adjustment in the event of a single incident under the replacement power
coverage and the property damage coverage. However, ComEd could be subject to
maximum assessments, in any policy year, of approximately $22 million and $70
million in the event losses exceed accumulated reserve funds under the
replacement power and property damage coverages, respectively.
 
  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 $1,030 million in
the event of an incident, limited to a maximum of $130 million in any calendar
year.
 
                                     C-49
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONTINUED
 
  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.
 
  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. In 1994, a federal jury returned nominal dollar verdicts on 8
bellwether plaintiffs' claims in these cases, which verdicts were upheld on
appeal. The remaining claims in the 1989 actions have been settled and
dismissed. Although the remaining cases will necessarily involve the
resolution of numerous contested issues of fact and law, ComEd's determination
is that these actions will not have a material impact on its financial
position or results of operations. A case relating to 14 of the plaintiffs in
the 1991 cases has been set for trial in June 1998.
 
  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 Northern Illinois Gas
Company 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. ComEd presently estimates that its costs of
former MGP site investigation and remediation will aggregate from $25 million
to $150 million in current-year (1998) dollars. It is expected that the costs
associated with investigation and remediation of former MGP sites will be
incurred over a period not to exceed 30 years. Because ComEd is not able to
determine the most probable liability for such MGP costs, in accordance with
accounting standards, a reserve of $25 million has been included in other
noncurrent liabilities on the Consolidated Balance Sheets as of December 31,
1997 and 1996, which reflects the low end of the range of ComEd's estimate of
the liability associated with former MGP sites. In addition, as of December
31, 1997 and 1996, 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 remediation
sites other than former MGP sites. Approximately half of this reserve relates
to anticipated cleanup costs associated with a property formerly used as a
tannery which was purchased by ComEd in 1973. ComEd presently estimates that
its costs of investigating and remediating the former MGP and other
remediation sites, pursuant to CERCLA and state environmental laws, will not
have a material impact on the financial position or results of operations of
ComEd. 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.
 
                                     C-50
<PAGE>
 
             COMMONWEALTH EDISON COMPANY AND SUBSIDIARY COMPANIES
 
                   NOTES TO FINANCIAL STATEMENTS--CONCLUDED
 
  Final ICC orders have been issued in fuel reconciliation proceedings for
years prior to 1994 and for the year 1995. In 1996, an intervenor filed
testimony in the fuel reconciliation proceeding for 1994 seeking a refund of
approximately $90 million relating to nuclear station performance. The 1997
Act provides that the fuel reconciliation proceedings for 1994 and 1996 must
be concluded by the end of 1998. If refunds are required in these proceedings,
the refunds could have a material effect on results of operations. The 1997
Act also provides that, because ComEd eliminated its FAC effective January 1,
1997, the lCC shall not conduct a fuel reconciliation proceeding for the year
1997 and subsequent years. See Note 2 for information regarding the
elimination of ComEd's FAC.
 
(24) QUARTERLY FINANCIAL INFORMATION
 
<TABLE>
<CAPTION>
 THREE MONTHS ENDED                                         NET INCOME/
(1997 RESTATED FOR        ELECTRIC  ELECTRIC                 (LOSS) ON
CHANGE IN                OPERATING  OPERATING      NET        COMMON
 ACCOUNTING PRINCIPLE)    REVENUES   INCOME   INCOME/(LOSS)    STOCK
- ----------------------   ---------- --------- ------------- -----------
                                   (THOUSANDS EXCEPT PER SHARE DATA)
<S>                      <C>        <C>       <C>           <C>
March 31, 1997.......... $1,669,495 $214,310   $   277,928  $   262,401
June 30, 1997........... $1,685,196 $154,820   $    25,063  $     9,578
September 30, 1997...... $2,068,087 $390,630   $   260,985  $   246,083
December 31, 1997....... $1,650,310 $162,054   $(1,337,749) $(1,352,321)
March 31, 1996.......... $1,683,489 $298,711   $   155,891  $   139,377
June 30, 1996........... $1,547,632 $254,690   $   119,448  $   102,976
September 30, 1996...... $2,066,975 $475,839   $   353,147  $   337,262
December 31, 1996....... $1,636,451 $241,278   $   114,882  $    99,329
<CAPTION>
                                                            NET INCOME/
                          ELECTRIC  ELECTRIC                 (LOSS) ON
 THREE MONTHS ENDED PRO  OPERATING  OPERATING      NET        COMMON
FORMA (UNAUDITED) (A)     REVENUES   INCOME   INCOME/(LOSS)    STOCK
- -----------------------  ---------- --------- ------------- -----------
                                   (THOUSANDS EXCEPT PER SHARE DATA)
<S>                      <C>        <C>       <C>           <C>
March 31, 1997.......... $1,669,495 $214,310   $    81,228  $    65,701
June 30, 1997........... $1,685,196 $154,820   $    25,063  $     9,578
September 30, 1997...... $2,068,087 $390,630   $   260,985  $   246,083
December 31, 1997....... $1,650,310 $162,054   $(1,337,749) $(1,352,321)
March 31, 1996.......... $1,636,072 $272,444   $   129,624  $   113,110
June 30, 1996........... $1,599,596 $284,870   $   149,628  $   133,156
September 30, 1996...... $2,044,793 $462,950   $   340,258  $   324,373
December 31, 1996....... $1,708,617 $282,384   $   155,988  $   140,435
</TABLE>
 
(a) Pro Forma quarterly financial information as if the change in accounting
    principle had been applied retroactively, excluding the cumulative effect
    of a change in accounting principle.
 
                                     C-51


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