CECO HOLDING CO
S-4, 1994-01-31
ELECTRIC SERVICES
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<PAGE>
 
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 31, 1994
 
                                                      REGISTRATION NO. 33-
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                               ----------------
                                   FORM S-4
                            REGISTRATION STATEMENT
                                     Under
                          The Securities Act of 1933
                               ----------------
                             CECO HOLDING COMPANY
            (Exact name of registrant as specified in its charter)
                               ----------------
         Illinois                        6719                Applied For
      (State or other        (Primary Standard Industrial (I.R.S. Employer
       jurisdiction          Classification Code Number) Identification No.)
    of incorporation or
       organization)
 
              37th Floor                          John C. Bukovski
       10 South Dearborn Street                    Vice President
          Post Office Box 767                   CECo Holding Company
     Chicago, Illinois 60690-0767                    37th Floor
            (312) 394-4321                    10 South Dearborn Street
   (Address, including zip code, and             Post Office Box 767
telephone number, including area code,      Chicago, Illinois 60690-0767
  of registrant's principal executive              (312) 394-3117
               offices)                  (Name, address, including zip code,
                                        and telephone number, including area
                                             code, of agent for service)
                                  Copies to:
                             R. Todd Vieregg, P.C.
                                Sidley & Austin
                           One First National Plaza
                            Chicago, Illinois 60603
                                (312) 853-7470
                               ----------------
  Approximate date of commencement of proposed sale to the public: As soon as
practicable after this Registration Statement becomes effective and all other
conditions to the merger ("Merger") of CECo Merging Corporation with and into
Commonwealth Edison Company pursuant to the Merger Agreement described in the
enclosed Prospectus and Proxy Statement have been satisfied or waived.
 
  If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, check the following box. [_]
 
                        CALCULATION OF REGISTRATION FEE
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                          PROPOSED
                                           PROPOSED       MAXIMUM
 TITLE OF EACH CLASS OF      AMOUNT        MAXIMUM       AGGREGATE      AMOUNT OF
    SECURITIES TO BE         TO BE      OFFERING PRICE OFFERING PRICE  REGISTRATION
       REGISTERED          REGISTERED    PER UNIT (1)        (1)           FEE
- -----------------------------------------------------------------------------------
<S>                      <C>            <C>            <C>            <C>
Common Stock, without     215,770,000      $27.0625    $5,839,275,625   $2,013,544
 par value.............      Shares
- -----------------------------------------------------------------------------------
</TABLE>
- -------------------------------------------------------------------------------
(1) Estimated pursuant to Rule 457(f)(1) of the Securities Act of 1933, based
    upon the market value of the shares of Commonwealth Edison Company Common
    Stock to be converted in the Merger ($27.0625 per share, which is the
    average of the high and low sales prices of a share of Commonwealth Edison
    Company Common Stock on the New York Stock Exchange, Inc. Composite Tape
    on January 25, 1994).
                               ----------------
  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION
STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                EXPLANATORY NOTE
 
  The number of shares of CECo Holding Company Common Stock to be issued in the
conversion of Commonwealth Edison Company Common Stock in the Merger described
herein cannot be precisely determined at the time this Registration Statement
becomes effective because shares of Commonwealth Edison Company Common Stock
may be issued thereafter and until the effective time of the Merger under the
Commonwealth Edison Company Employe Savings and Investment Plan and Employe
Stock Purchase Plan. This Registration Statement covers a number of shares of
CECo Holding Company Common Stock which is estimated to be at least as large as
the number of shares of Commonwealth Edison Company Common Stock which is
expected to be outstanding at the effective time of the Merger. See the
undertaking in Item 22(4) in Part II of this Registration Statement.
 
                                      -i-
<PAGE>
 
                              CECO HOLDING COMPANY
 
                             CROSS REFERENCE SHEET
 
                   PURSUANT TO ITEM 501(B) OF REGULATION S-K
 
<TABLE>
<CAPTION>
       FORM S-4--ITEM NO. AND CAPTION                 PROSPECTUS AND PROXY STATEMENT
       ------------------------------                 ------------------------------
<S>                                            <C>
A. INFORMATION ABOUT THE TRANSACTION
 1. Forepart of Registration Statement and
   Outside Front Cover Page of Prospectus....  Facing Page of Registration Statement;
                                                Cross Reference Sheet; Outside Front Cover
                                                Page of Prospectus
 2. Inside Front and Outside Back Cover Pages
   of Prospectus.............................  Available Information; Incorporation of
                                                Certain Information by Reference; Table of
                                                Contents
 3. Risk Factors, Ratio of Earnings to Fixed
   Charges and Other Information.............  Summary of Restructuring Proposal; Outside
                                                Front Cover Page of Prospectus
 4. Terms of the Transaction.................  Summary of Restructuring Proposal;
                                                Corporate Restructuring Plan
 5. Pro Forma Financial Information .........  Not Applicable
 6. Material Contacts with the Company Being
   Acquired..................................  Not Applicable
 7. Additional Information Required for
   Reoffering by Persons and Parties Deemed
   to be Underwriters........................  Not Applicable
 8. Interests of Named Experts and Counsel...  Not Applicable
 9. Disclosure of Commission Position on
   Indemnification for Securities Act
   Liabilities...............................  Not Applicable
B. INFORMATION ABOUT THE REGISTRANT
10. Information with Respect to S-3
   Registrants...............................  Not Applicable
11. Incorporation of Certain Information by
   Reference.................................  Not Applicable
12. Information with Respect to S-2 or S-3
   Registrants...............................  Not Applicable
13. Incorporation of Certain Information by
   Reference.................................  Not Applicable
14. Information with Respect to Registrants
   Other Than S-2 or S-3 Registrants.........  Not Applicable
C. INFORMATION ABOUT THE COMPANY BEING
 ACQUIRED
15. Information with Respect to S-3            
   Companies.................................  Incorporation of Certain Information by 
                                                Reference                               
16. Information with Respect to S-2 or S-3
   Companies.................................  Not Applicable
17. Information with Respect to Companies
   Other than S-2 or S-3 Companies...........  Not Applicable
</TABLE>
<PAGE>
 
<TABLE>
<CAPTION>
       FORM S-4--ITEM NO. AND CAPTION                 PROSPECTUS AND PROXY STATEMENT
       ------------------------------                 ------------------------------
<S>                                            <C>
D. VOTING AND MANAGEMENT INFORMATION
18. Information if Proxies, Consents or
   Authorizations Are to be Solicited........  Incorporation of Certain Information by
                                                Reference; Introduction--Voting;
                                                Introduction--Security Ownership of
                                                Certain Beneficial Owners and Management;
                                                Corporate Restructuring Plan--Rights of
                                                Dissenting Shareholders; Item A. Election
                                                of Directors; Item B. Corporate
                                                Restructuring Plan--Management; Proxy
                                                Statement
19. Information if Proxies, Consents or
   Authorizations Are Not to be Solicited in
   an Exchange Offer.........................  Not Applicable
</TABLE>
<PAGE>
 
LOGO
      COMMONWEALTH EDISON
 
      10 SOUTH DEARBORN STREET
      P.O. BOX 767
      CHICAGO, ILLINOIS 60690-0767
 
To the Shareholders of Commonwealth Edison Company:
 
  The regular annual meeting of the shareholders of Commonwealth Edison Company
("Edison") will be held on May 10, 1994, to act upon a proposed corporate
restructuring in which Edison will become a subsidiary of a new holding company
currently named "CECo Holding Company" ("Holding Company"), and to act upon
other items of business as set forth in the Proxy Statement that follows.
 
  Your Board of Directors unanimously believes that the proposed restructuring
into a holding company system is beneficial to Edison and its shareholders. The
restructuring will permit timely responses to competitive activities which
could adversely affect the Edison utility business, and will allow Holding
Company to provide a broad array of energy services through its utility
subsidiary (Edison) and its unregulated subsidiaries. If approved, affiliates
of Edison will be able to engage in non-utility businesses without the prior
approval of, or being regulated by, the Illinois Commerce Commission.
 
  To accomplish the restructuring, Holding Company has been organized. The name
"CECo Holding Company" will be changed prior to the effectiveness of the
restructuring to a permanent name which has not yet been determined.
 
  It is proposed that outstanding shares of Edison Common Stock be converted in
a merger, on a share-for-share basis, into shares of Holding Company Common
Stock. As a result, the holders of Edison Common Stock will become the owners
of Holding Company Common Stock, and Holding Company will become the owner of
the Edison Common Stock. The outstanding shares of Edison Preferred Stock and
Preference Stock will continue to be outstanding securities of Edison after the
merger.
 
  In addition, it is contemplated that on the day of the merger, Edison will
transfer ownership of certain of its non-utility subsidiaries to Holding
Company.
 
  If the restructuring is effected, it will not be necessary for you to turn in
your Edison Common Stock certificates in exchange for Holding Company Common
Stock certificates. The certificates for Edison Common Stock you now hold will
automatically represent shares of Holding Company Common Stock. New
certificates bearing the name of the Holding Company will be issued in the
future as certificates for presently outstanding shares of Edison Common Stock
are presented for transfer.
 
  Even if you plan to attend the annual meeting, please sign, date and return
the accompanying proxy in the enclosed addressed, postage-paid envelope. (You
may revoke your proxy at any time before it is voted by delivering written
notice of such revocation to Edison, executing a subsequent proxy or attending
the annual meeting and voting in person).
 
                                          Sincerely,
 
                                          James J. O'Connor
                                             Chairman
<PAGE>
 
LOGO
      COMMONWEALTH EDISON
 
      10 SOUTH DEARBORN STREET
      P.O. BOX 767
      CHICAGO, ILLINOIS 60690-0767
 
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
 
                                  MAY 10, 1994
 
  The regular annual meeting of shareholders of Commonwealth Edison Company
("Edison") will be held in the Grand Ballroom of the Chicago Hilton and Towers,
720 South Michigan Avenue, Chicago, Illinois, on Tuesday, May 10, 1994, at
10:30 A.M., Chicago time, for the following purposes, which are described in
the accompanying Proxy Statement, and to transact such other business as may
properly be brought before the meeting:
 
  Item A: To elect a Board of eleven Directors.
 
  Item B: To consider and act upon approval of an Agreement and Plan of
          Merger, a copy of which is attached as Exhibit A to the
          accompanying Proxy Statement, pursuant to which CECo Merging
          Corporation, a subsidiary of CECo Holding Company ("Holding
          Company"), will be merged into Edison, with the result that Edison
          will become a subsidiary of Holding Company, and the holders of
          Edison Common Stock will become the holders of Holding Company
          Common Stock.
 
  Item C: To consider and act upon a proposed Amendment to the Edison
          Restated Articles of Incorporation, as amended, to limit the
          liability of Edison Directors and to provide for indemnification by
          Edison of its Directors, officers, employes and agents.
 
  Item D: To consider and act upon approval of the appointment by the Edison
          Board of Directors of Arthur Andersen & Co., independent public
          accountants, as Auditors for 1994.
 
  Shareholders of record on the books of Edison at 4:00 P.M., Chicago time,
March 11, 1994, will be entitled to vote at the meeting.
 
  PLEASE FILL IN, SIGN, DATE AND RETURN THE ENCLOSED PROXY PROMPTLY.
 
                                          David A. Scholz
                                          Secretary
 
March   , 1994
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE      +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       PRELIMINARY PROSPECTUS AND PROXY STATEMENT DATED JANUARY 31, 1994
 
                                PROXY STATEMENT
                                      FOR
                          COMMONWEALTH EDISON COMPANY
 
                                   PROSPECTUS
                                      FOR
                              CECO HOLDING COMPANY
                                  COMMON STOCK
 
 
  This Prospectus, including the Proxy Statement forming a part hereof, has
been prepared in connection with the issuance of up to 215,770,000 shares of
Common Stock, without par value, of CECo Holding Company, an Illinois
corporation ("Holding Company"), (i) upon the consummation of the proposed
merger of CECo Merging Corporation, an Illinois corporation ("Merging Corp."),
which is a wholly-owned subsidiary of Holding Company, with and into
Commonwealth Edison Company, an Illinois corporation ("Edison"), and (ii) under
certain stock plans of Edison.
 
  At the effective time of such merger, each share of Edison Common Stock,
$12.50 par value, will automatically be converted into and, without action on
the part of the holder thereof, become one share of Common Stock, without par
value, of Holding Company. The difference in par value will not affect the
market value of such stock.
 
THESE SECURITIES  HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE  SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION PASSED UPON  THE
  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS.  ANY  REPRESENTATION  TO  THE
   CONTRARY IS A CRIMINAL OFFENSE.
 
  The executive offices of Holding Company are located at 10 South Dearborn
Street, P.O. Box 767, Chicago, Illinois 60690-0767, and its telephone number at
such address is (312) 394-4321.
 
  This Prospectus and Proxy Statement and the form of proxy were first mailed
to shareholders on or about March   , 1994.
 
                                  -----------
 
       The date of this Prospectus and Proxy Statement is March   , 1994.
<PAGE>
 
  THIS PROSPECTUS AND PROXY STATEMENT INCORPORATES DOCUMENTS BY REFERENCE WHICH
ARE NOT PRESENTED HEREIN OR DELIVERED HEREWITH. THESE DOCUMENTS ARE AVAILABLE
UPON REQUEST FROM DAVID A. SCHOLZ, SECRETARY, COMMONWEALTH EDISON COMPANY, 37TH
FLOOR, 10 SOUTH DEARBORN STREET, POST OFFICE BOX 767, CHICAGO, ILLINOIS 60690-
0767 (TELEPHONE NUMBER 312/394-8817). IN ORDER TO ENSURE TIMELY DELIVERY OF THE
DOCUMENTS, ANY REQUEST SHOULD BE MADE BY MAY 3, 1994.
 
                             AVAILABLE INFORMATION
 
  Edison is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended ("1934 Act"), and in accordance therewith
files reports and other information with the Securities and Exchange Commission
("SEC"). Reports, proxy statements and other information filed by Edison can be
inspected and copied at the public reference facilities maintained by the SEC
at 450 Fifth Street, N.W., Washington, D.C. 20549, and at its Regional Offices
located at Citicorp Center, 500 West Madison Street, Chicago, IL 60661 and
Seven World Trade Center, New York, NY 10048. Copies of such material can be
obtained from the Public Reference Section of the SEC, 450 Fifth Street, N.W.,
Washington, D.C. 20549 at prescribed rates. In addition, reports, proxy
statements and other information concerning Edison may be inspected at the
offices of the New York Stock Exchange, 20 Broad Street, New York, NY, the
Chicago Stock Exchange, 440 South LaSalle Street, Chicago, IL and the Pacific
Stock Exchange, 301 Pine Street, San Francisco, CA, the exchanges on which
certain of Edison's securities are listed. Holding Company has filed with the
SEC a Registration Statement on Form S-4 under the Securities Act of 1933, as
amended ("1933 Act"), with respect to the shares of Holding Company common
stock, without par value ("Holding Company Common Stock"), offered hereby. This
Prospectus and Proxy Statement does not contain all of the information set
forth in such Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the SEC. For further information,
reference is made to such Registration Statement.
 
  Holding Company will become subject to the same informational requirements as
Edison following the merger described in this Prospectus and Proxy Statement,
and will file reports, proxy statements and other information with the SEC in
accordance with the 1934 Act.
 
                               ----------------
 
  No person has been authorized to give any information or to make any
representation not contained in this Prospectus and Proxy Statement in
connection with the offer contained in this Prospectus and Proxy Statement,
and, if given or made, such information or representation must not be relied
upon as having been authorized.
 
  Neither the delivery of this Prospectus and Proxy Statement nor any
distribution of shares of Holding Company Common Stock made hereunder shall,
under any circumstances, create any implication that there has not been any
change in the affairs of Edison or Holding Company since the respective dates
as of which information is given herein.
 
                             REGISTRATION STATEMENT
 
  This Prospectus and Proxy Statement is a prospectus delivered in compliance
with the 1933 Act with respect to the shares of Holding Company Common Stock
offered hereby. A Registration Statement under the 1933 Act has been filed with
the SEC, with respect to the shares of Holding Company Common Stock offered
hereby. As permitted by the rules and regulations of the SEC, this Prospectus
and Proxy Statement omits certain information contained in the Registration
Statement on file with the SEC. The omitted information can be inspected and
copied at the above-described reference facilities maintained by the SEC.
 
                                       2
<PAGE>
 
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
 
  The following documents filed by Edison with the SEC (File No. 1-1839) are
incorporated in this Prospectus and Proxy Statement by reference and made a
part hereof:
 
    (a) The Edison Annual Report on Form 10-K for the year ended December 31,
  1992 ("1992 Form 10-K");
 
    (b) The Edison Quarterly Reports on Form 10-Q for the quarterly periods
  ended March 31, 1993 (the "March 31, 1993 Form 10-Q"), June 30, 1993 (the
  "June 30, 1993 Form 10-Q") and September 30, 1993 (the "September 30, 1993
  Form 10-Q"); and
 
    (c) The Edison Current Reports on Form 8-K dated January 28, 1993 (the
  "January 28, 1993 Form 8-K"), May 21, 1993 and September 24, 1993.
 
  All documents subsequently filed by Edison pursuant to Section 13(a), 13(c),
14 or 15(d) of the 1934 Act, after the date of this Prospectus and Proxy
Statement and prior to the termination of the offer made by this Prospectus and
Proxy Statement, shall be deemed to be incorporated in this Prospectus and
Proxy Statement by reference and to be a part hereof from the respective dates
of filing of such documents. Any statement contained in a document incorporated
or deemed to be incorporated by reference in this Prospectus and Proxy
Statement shall be deemed to be modified or superseded for purposes of this
Prospectus and Proxy Statement to the extent that a statement contained in this
Prospectus and Proxy Statement or in any other subsequently filed document
which also is or is deemed to be incorporated by reference in this Prospectus
and Proxy Statement modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed, except as so modified or
superseded, to constitute a part of this Prospectus and Proxy Statement.
 
  Edison will provide without charge to each person, including any beneficial
owner, to whom this Prospectus and Proxy Statement is delivered, upon written
or oral request of such person, a copy of any or all of the documents that have
been or may be incorporated in this Prospectus and Proxy Statement by
reference, other than certain exhibits to such documents, unless such exhibits
are specifically incorporated by reference into the information that this
Prospectus and Proxy Statement incorporates. Such requests should be directed
to David A. Scholz, Secretary, Commonwealth Edison Company, 37th Floor, 10
South Dearborn Street, Post Office Box 767, Chicago, IL 60690-0767 (telephone
number 312/394-8817).
 
                                       3
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary of Restructuring Proposal.........................................    5
Introduction..............................................................    9
  Solicitation and Revocation of Proxies..................................    9
  Manner and Cost of Solicitation.........................................    9
  Voting..................................................................    9
  Security Ownership of Certain Beneficial Owners and Management..........   10
Item A. Election of Directors.............................................   12
  Nominees................................................................   12
  Additional Information Concerning Board of Directors....................   14
  Executive Compensation..................................................   16
  Summary Compensation Table..............................................   16
  Service Annuity System Plan.............................................   17
  Employment Agreement....................................................   18
  Compensation Committee Report on Executive Compensation.................   18
  Shareholder Return Performance..........................................   19
Item B. Corporate Restructuring Plan......................................   20
  Reasons for the Restructuring...........................................   20
  Merger Agreement........................................................   22
  Supplemental Agreement..................................................   22
  Required Regulatory Approvals...........................................   23
  Illinois Public Utilities Act...........................................   23
  Transfer of Edison Assets to Holding Company............................   24
  Dividend Policy.........................................................   24
  Treatment of Preferred and Preference Stock.............................   25
  Possible Minority Interest..............................................   25
  Amendment or Termination................................................   26
  Rights of Dissenting Shareholders.......................................   26
  Effectiveness of the Restructuring......................................   27
  Exchange of Stock Certificates..........................................   27
  Federal Income Tax Consequences.........................................   28
  Listing of Holding Company Common Stock.................................   28
  Regulation of Holding Company...........................................   28
  Management..............................................................   29
  Holding Company Capital Stock...........................................   29
  Comparative Shareholders' Rights........................................   29
  Stock Plans.............................................................   31
  Transfer Agent and Registrar............................................   31
  Edison Common Stock Market Prices and Dividends.........................   31
  Edison Preferred Stock and Edison Preference Stock Market Information...   32
  Legal Opinions..........................................................   33
  Experts.................................................................   33
Item C. Amendment of the Edison Restated Articles of Incorporation........   33
  Background..............................................................   33
  Text of the Proposed Amendment..........................................   33
  Reasons for the Proposed Amendment......................................   34
  Effect of the Proposed Amendment........................................   34
Item D. Approval of Auditors..............................................   35
Transaction of Other Business.............................................   35
Exhibit A--Agreement and Plan of Merger...................................  A-1
Exhibit B--Supplemental Agreement.........................................  B-1
Exhibit C--Articles of Incorporation of CECo Holding Company..............  C-1
Exhibit D--Provisions of the Illinois Business Corporation Act Relating to
        Rights of Dissenting Shareholders.................................  D-1
</TABLE>
 
                                       4
<PAGE>
 
                       SUMMARY OF RESTRUCTURING PROPOSAL
 
  The following is a summary of certain information regarding the restructuring
proposal contained or incorporated by reference in this Prospectus and Proxy
Statement and is qualified in its entirety by the more detailed information
contained or incorporated by reference herein.
 
PROPOSED RESTRUCTURING
 
  Holding Company has been organized to become the holding company for, and the
direct owner of, Edison and a newly formed subsidiary of Edison named "CECo
Enterprises Inc." ("CECo Enterprises"). The formation of the holding company
structure will be achieved by the merger ("Merger") of a newly formed
subsidiary of Holding Company, Merging Corp., into Edison. In the Merger, the
holders of Edison Common Stock, par value $12.50 per share ("Edison Common
Stock"), immediately prior to the Merger will become the holders of Holding
Company Common Stock immediately after the Merger, and immediately after the
Merger Holding Company will become the sole holder of Edison Common Stock.
 
  Holders of Edison $1.425 Convertible Preferred Stock, without par value
("Edison Preferred Stock"), Edison Cumulative Preference Stock, without par
value ("Edison Preference Stock"), and Warrants will continue to hold such
Stock and Edison Warrants following the Merger, which will not change any
rights of such holders. See "Treatment of Preferred and Preference Stock" and
"Possible Minority Interest."
 
  Edison is principally engaged in the production, purchase, transmission,
distribution and sale of electricity to approximately 3.3 million customers.
Its electric service territory has an area of approximately 11,540 square miles
and an estimated population of 8.1 million, and includes the city of Chicago,
an area of about 225 square miles with an estimated population of three million
from which Edison derives approximately one-third of its ultimate consumer
revenues.
 
  CECo Enterprises is a holding company which will have no assets other than
those involved in its ownership of stock of its subsidiaries; currently, its
only subsidiary is Northwind Inc., which was formed in 1993 to provide district
cooling services to office and other buildings from central locations in
Chicago. Northwind Inc. is currently seeking customers for its services,
creating plans for its facilities and negotiating contracts to procure its
business assets. On the day of the Merger, Edison will transfer the stock of
CECo Enterprises to Holding Company. See "Transfer of Edison Assets to Holding
Company."
 
  Holding Company will have no assets other than those involved in its
ownership of stock of its subsidiaries, which at the effective time of the
Merger will consist of all of the Edison Common Stock and the common stock of
CECo Enterprises. Holding Company will conduct no business other than the
ownership of the stock of its subsidiaries. The principal executive offices of
Holding Company and Edison are located at 10 South Dearborn Street, Post Office
Box 767, Chicago, Illinois 60690-0767, and their telephone number is 312-394-
4321.
 
  Merging Corp. has nominal assets and has been formed for the sole purpose of
effecting the Merger, at which time it will cease to exist.
 
 
                                       5
<PAGE>
 
  The following diagrams illustrate the present and proposed corporate
structures of (i) Edison and its subsidiaries before the Merger and (ii)
Holding Company and its subsidiaries following the Merger and the Edison
transfer of CECo Enterprises to Holding Company. Edison will retain its other
subsidiaries, which provide goods and services to Edison.
 
                               PRESENT STRUCTURE
 
 
                          Commonwealth Edison Company
  
               -------------------------------------------------
  
  Commonwealth Edison    -     CECo Enterprises Inc.      CECo Holding Company
Company of Indiana, Inc. 
                                   Northwind Inc.             CECo Merging
                                                               Corporation
   Edison Development    -
        Company          
                        
   Cotter Corporation    -
 
  Commonwealth Research  -
      Corporation        
 
     Concomber, Ltd.     -
  
   Edison Development    -
      Canada Inc.
 
                               PROPOSED STRUCTURE
 
 
                              CECo Holding Company
 
               -------------------------------------------------
 
  Commonwealth Edison                                CECo Enterprises Inc.
        Company
                                                          Northwind Inc.
- --------------------------            

  Commonwealth Edison    -
  Company of Indiana,
          Inc.           
 
   Edison Development    -
        Company
 
   Cotter Corporation    -
 
  Commonwealth Research  -
      Corporation
 
    Concomber, Ltd.      -
 
   Edison Development    -
      Canada Inc.
 
 



                                       6
<PAGE>
 
 
EXCHANGE OF CERTIFICATES
 
  It will not be necessary for shareholders to turn in their certificates for
Edison Common Stock in exchange for certificates for Holding Company Common
Stock. The certificates which presently represent outstanding shares of Edison
Common Stock will automatically represent shares of Holding Company Common
Stock following the effectiveness of the Merger. New certificates bearing the
name of the Holding Company will be issued in the future, if, and as,
certificates for presently outstanding shares of Edison Common Stock are
presented for exchange or transfer.
 
STOCK EXCHANGE LISTINGS
 
  Holding Company will apply to list its Common Stock on the New York, Chicago
and Pacific Stock Exchanges. It is expected that such listings will become
effective on the effective date of the Merger, subject to the rules of such
Exchanges. See "Listing of Holding Company Common Stock."
 
DIVIDEND POLICY
 
  Dividends on Holding Company Common Stock will depend primarily on the
earnings, financial condition and capital requirements of Edison, and its
ability to pay dividends on the Edison Common Stock owned by Holding Company.
It is currently contemplated that Holding Company will initially pay quarterly
dividends on Holding Company Common Stock at the same rate, and on
approximately the same schedule, as dividends most recently have been paid on
Edison Common Stock. See "Dividend Policy."
 
REASONS FOR THE RESTRUCTURING
 
  The management and the Board of Directors of Edison unanimously believe that
the proposed restructuring is beneficial because it will permit affiliates of
Edison to engage in non-utility businesses without the prior approval of, or
being regulated by, the Illinois Commerce Commission. The restructuring is
intended to permit timely responses to competitive activities which could
adversely affect the Edison utility business, to insulate the Edison utility
business from the business risks and obligations of other Holding Company
subsidiaries, to provide financial flexibility and to facilitate capital
allocation and managerial accountability. See "Reasons for the Restructuring."
 
VOTE REQUIRED
 
  Only holders of shares of Edison Common Stock, Edison Preferred Stock and
Edison Preference Stock at 4:00 P.M., Chicago time, on March 11, 1994 ("Record
Date"), will be entitled to notice of and to vote at the regular annual meeting
to consider approval of the Merger Agreement to effect the restructuring. As of
March 11, 1994, there were            shares of Edison Common Stock,
shares of Edison Preferred Stock and          shares of Edison Preference Stock
outstanding. The affirmative votes of the holders of two-thirds of the
outstanding shares of Edison Common Stock, Edison Preferred Stock and Edison
Preference Stock, voting together as a single class, are required to approve
the Merger Agreement. See "Voting."
 
REGULATORY APPROVALS
 
  Applications for approval of the restructuring have been filed with the SEC
under the Public Utility Holding Company Act of 1935 ("1935 Act"), the Federal
Energy Regulatory Commission ("FERC") under the Federal Power Act and the
Nuclear Regulatory Commission ("NRC") under the Atomic Energy Act. Amendments
to the Illinois Public Utilities Act which became effective on July 13, 1993,
permit the restructuring to occur without the prior approval of the Illinois
Commerce Commission, subject to certain conditions. See "Required Regulatory
Approvals" and "Illinois Public Utilities Act."
 
                                       7
<PAGE>
 
 
CERTAIN TAX CONSEQUENCES
 
  It is intended that the conversion of Edison Common Stock into Holding
Company Common Stock in the Merger will not be taxable under Federal income tax
laws, and it is a condition for the Merger to become effective that Edison
receive either an opinion of counsel or a ruling from the Internal Revenue
Service satisfactory to the Edison Board of Directors with respect to the
Federal income tax consequences of the Merger. Edison has received a ruling
concerning certain tax consequences of the Merger, and it has received an
opinion of Sidley & Austin, counsel to Edison, with respect to certain other
tax consequences of the Merger. See "Federal Income Tax Consequences."
 
RIGHTS OF DISSENTING SHAREHOLDERS
 
  The holders of Edison Common Stock, Edison Preferred Stock and Edison
Preference Stock have the right to dissent from consummation of the Merger and,
upon compliance with the procedural requirements of the Illinois Business
Corporation Act, to receive the "fair value" of their shares if the Merger is
effected. Any such holders electing to exercise their right of dissent must
deliver to Edison before the vote is taken a written demand for payment of such
holder's shares if the Merger is consummated, and not vote to approve the
Merger Agreement. See "Rights of Dissenting Shareholders" and Exhibit D.
 
                                       8
<PAGE>
 
                                  INTRODUCTION
 
SOLICITATION AND REVOCATION OF PROXIES
 
  The Proxy Statement forming a part hereof is furnished in connection with the
solicitation by the Board of Directors of Edison of proxies for use at the
regular annual meeting of Edison shareholders to be held on May 10, 1994.
 
  Any shareholder giving a proxy will have the right to revoke it at any time
prior to the time it is voted. A proxy may be revoked by written notice to
Edison, execution of a subsequent proxy or attendance at the annual meeting and
voting in person. Attendance at the meeting will not automatically revoke the
proxy. All shares represented by properly executed and unrevoked proxies
received in the accompanying form in time for the annual meeting will be voted
at the meeting or at any adjournment thereof. 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.
 
  The Edison 1993 Annual Report, including financial statements, was mailed to
each Edison shareholder on or about February 15, 1994.
 
MANNER AND COST OF SOLICITATION
 
  The cost of soliciting proxies will initially be borne by Edison. If the
Merger becomes effective, Holding Company will reimburse Edison for all of the
expenses it incurs in the restructuring, including the cost of soliciting
proxies for approval of the Merger. See "Illinois Public Utilities Act." In
addition to solicitation by mail, officers and employes of Edison may solicit
proxies by telephone or in person. Edison has arranged for Morrow & Co., Inc.
to assist in the solicitation of proxies, at an estimated cost (excluding
reimbursement of out of pocket costs) of $25,000.
 
VOTING
 
  Shareholders of record on the books of Edison at 4:00 P.M., Chicago time,
March 11, 1994, will be entitled to vote at the regular annual meeting. On
March 11, 1994, there were           outstanding shares of Edison Common Stock,
             outstanding shares of Edison Preferred Stock and
outstanding shares of Edison Preference Stock (issued in twelve series). 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, except that the
holders of two-thirds of the outstanding shares of Edison Common Stock, Edison
Preferred Stock and Edison Preference Stock (a) entitled to vote on the
proposal to approve the Agreement and Plan of Merger ("Merger Agreement")
between Edison and Merging Corp., and represented in person or by proxy will
constitute a quorum for the consideration of such proposal, and (b) entitled to
vote on the proposed Amendment to the Edison Restated Articles of Incorporation
and represented in person or by proxy will constitute a quorum for the
consideration of such proposal.
 
  With respect to the election of Directors, a shareholder may mark the
accompanying form of proxy to (i) vote for the election of all eleven nominees
named in this Proxy Statement as Directors, (ii) withhold authority to vote for
all such Director nominees or (iii) vote for the election of all such Director
nominees other than any nominee with respect to whom the shareholder withholds
authority to vote. Assuming that a quorum is present at the meeting, the eleven
persons receiving the greatest number of votes shall be elected as Directors.
Withholding authority to vote for a Director nominee will not
 
                                       9
<PAGE>
 
prevent such Director nominee from being elected. The proxy holders will
cumulate votes of shares represented by proxies only if a shareholder gives
them specific written instructions to do so.
 
  With respect to the appointment of Auditors, a shareholder may mark the
accompanying form of proxy to (i) vote for the matter, (ii) vote against the
matter or (iii) abstain from voting on the matter. If a quorum to vote on such
matter is present at the meeting, 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 the Auditors.
 
  Under Illinois law, the affirmative votes of the holders of two-thirds of the
outstanding shares of Edison Common Stock, Edison Preferred Stock and Edison
Preference Stock, voting together as a single class, are required to approve
(i) the Merger Agreement, and (ii) the Amendment to the Edison Restated
Articles of Incorporation.
 
  The shares represented by the proxy of each shareholder include shares owned
by such shareholder and shares credited to such shareholder's account under the
Edison Dividend Reinvestment and Stock Purchase Plan and Employe Savings and
Investment Plan.
 
  Proxies submitted by brokers for shares beneficially owned by other persons
may indicate that all or a portion of the shares represented by such proxies
are not being voted with respect to approval of the Merger Agreement or the
proposed Amendment to the Edison Restated Articles of Incorporation. This is
because the rules of the New York Stock Exchange do not permit a broker to vote
shares held in street name with respect to such matters in the absence of
instructions from the beneficial owner of such shares. The shares represented
by broker proxies which are not voted with respect to any such matter will not
be counted in determining whether a quorum is present for consideration of such
matter and will not be considered represented at the meeting and entitled to
vote on approval of such matter.
 
  The shares represented by properly executed and unrevoked proxies received in
the accompanying form in time for the meeting will be voted at the meeting and
will be voted as directed in the proxies. IN THE ABSENCE OF SPECIFIC DIRECTION,
THE SHARES REPRESENTED BY THE PROXIES WILL BE VOTED AT THE MEETING AND WILL BE
VOTED FOR THE ELECTION OF THE NOMINEES NAMED IN THIS PROXY STATEMENT AS
DIRECTORS, FOR APPROVAL OF THE MERGER AGREEMENT, FOR APPROVAL OF THE PROPOSED
AMENDMENT TO THE EDISON RESTATED ARTICLES OF INCORPORATION AND FOR APPOINTMENT
OF ARTHUR ANDERSEN & CO. AS AUDITORS. In the event any nominee for Director
shall be unable to serve, which is not now contemplated, the proxies may or may
not be voted for a substitute nominee.
 
  Proxies marked to abstain from voting with respect to the Merger Agreement,
the proposed Amendment to the Edison Restated Articles of Incorporation or the
approval of Auditors will have the legal effect of voting against approval of
such matter.
 
  THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ALL DIRECTOR NOMINEES NAMED IN
ITEM A, FOR APPROVAL OF THE MERGER AGREEMENT AS DISCUSSED IN ITEM B, FOR
APPROVAL OF THE AMENDMENT TO THE EDISON RESTATED ARTICLES OF INCORPORATION AS
DISCUSSED IN ITEM C AND FOR APPOINTMENT OF ARTHUR ANDERSEN & CO. AS AUDITORS AS
DISCUSSED IN ITEM D.
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
  The following table lists the beneficial ownership, as of December 31, 1993,
of persons known to Edison to be the beneficial owner of more than five percent
of Edison Common Stock. The table also lists the beneficial ownership, as of
March 1, 1994, of Edison Common Stock by each of the Directors, each of the
executive officers named in the Summary Compensation Table on page 16 and the
Edison Directors and executive officers as a group.
 
                                       10
<PAGE>
 
<TABLE>
<CAPTION>
                          AMOUNT OF
                          BENEFICIAL
                          OWNERSHIP     PERCENT
                          OF COMMON       OF
NAME                        STOCK        CLASS
- ----                      ----------    -------
<S>                       <C>           <C>
The Capital Group, Inc..  17,700,460(1)  8.30%
Capital Research and
 Management Company.....  17,023,300(1)  7.98
Wellington Management
 Company................  14,764,543(2)  6.92
Jean Allard.............       1,060        *
James W. Compton........       1,101        *
Sue L. Gin..............       1,000        *
Donald P. Jacobs........       2,015        *
George E. Johnson.......       1,100        *
Harvey Kapnick..........       4,000        *
Byron Lee, Jr.(3).......       2,826        *
Edward A. Mason.........       1,018        *
James J. O'Connor.......      16,698(4)     *
Frank A. Olson..........       1,000        *
Samuel K. Skinner.......       1,000        *
Lando W. Zech, Jr.......       3,000        *
Cordell Reed............       1,676(5)     *
            ............                    *
            ............                    *
Directors and executive
 officers as a group (30
 persons)...............      66,507(6)     *
</TABLE>
- --------
*Less than one percent
(1) The Capital Group, Inc. ("Capital Group") is the parent company of several
    investment management companies, including Capital Research and Management
    Company ("CRMC"), and the shares reported as beneficially owned by it
    include the shares reported as beneficially owned by CRMC. According to
    their Schedule 13G dated February 11, 1993, Capital Group exercises sole
    voting power with respect to 593,310 shares and sole dispositive power with
    respect to 17,700,460 shares, and CRMC exercises sole dispositive power
    with respect to 17,023,300 shares (included within the total shares for
    Capital Group). Their address is 333 South Hope Street, Los Angeles,
    California 90071.
(2) Wellington Management Company ("Wellington") is also an investment
    management company. According to their Schedule 13G dated February 10,
    1993, Wellington exercises shared voting power with its investment
    counseling clients with respect to 1,373,800 shares and shared dispositive
    power with such clients with respect to 14,764,543 shares. Its address is
    75 State Street, Boston, Massachusetts 02109.
(3) Mr. Lee also beneficially owns 8 shares of Edison Preference Stock,
    representing less than one percent of such class.
(4) Includes 1,372 shares owned by family members.
(5) Includes 317 shares owned by spouse.
(6) Includes: 317 shares owned by spouses; 355 shares held in custodial
    accounts for family members; 1,150 shares jointly owned by spouse and in-
    laws; 1,392 shares owned by family members; and 2,562 shares jointly owned
    with family members. Such persons also beneficially own 77 shares of Edison
    Preference Stock, representing less than one percent of such class.
 
                                       11
<PAGE>
 
                         ITEM A. ELECTION OF DIRECTORS
 
NOMINEES
 
  Admiral Lando W. Zech, Jr., whose current term as a Director expires at the
1994 annual meeting of shareholders, has reached the mandatory retirement age
for Directors and is not standing for re-election. Admiral Zech has served as a
Director since 1989. His contributions were many and are gratefully
appreciated.
 
  Eleven 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 Edison, 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.
 
              JEAN ALLARD, age 69. Director since 1975. President of the
              Metropolitan Planning Council since October 1991. Partner in the
              law firm of Sonnenschein Nath & Rosenthal for more than five
              years prior to October 1991. Chair of Finance Committee and
[Photo]       member of Compensation, Executive and Regulatory and
              Environmental Affairs Committees. Other directorships: Axel
              Johnson, Inc., LaSalle National Bank, LaSalle National
              Corporation, LaSalle National Trust, N.A. and LaSalle Talman
              FSB.
 
 
 
              JAMES W. COMPTON, age 55. Director since 1989. President and
              Chief Executive Officer of the Chicago Urban League. Chairman of
[Photo]       Audit Committee and member of Compensation, Executive and
              Nominating Committees. Other directorships: Drexel National
              Bank, Independence Bank of Chicago and MATRA Transit, Inc.
 
              SUE L. GIN, age 52. Director since 1993. Founder, Owner,
[Photo]       Chairman and Chief Executive Officer of Flying Food Fare, Inc.
              Member of Audit, Compensation and Finance Committees. Other
              directorship: Michigan National Bank.
 
 
 
              DONALD P. JACOBS, age 66. Director since 1979. Dean of the J. L.
              Kellogg Graduate School of Management, Northwestern University.
              Chairman of Regulatory and Environmental Affairs Committee and
[Photo]       member of Compensation, Finance and Nominating Committees. Other
              directorships: First Chicago Corporation, The First National
              Bank of Chicago, Hartmarx Corp., Pet, Incorporated, UDC Homes,
              Inc., Unocal Corp. and Whitman Corp.
 
 
 
 
 
                                       12
<PAGE>
 
              GEORGE E. JOHNSON, age 66. Director since 1971. Chairman of
              Indecorp, Incorporated (holding company for Drexel National Bank
              and Independence Bank of Chicago). Founder and retired Chairman,
[Photo]       Johnson Products Company, Inc. Member of Audit, Compensation and
              Nominating Committees. Other directorships: Drexel National
              Bank, Indecorp, Incorporated, Independence Bank of Chicago and
              Burrell Communications, Inc.
 
 
 
              HARVEY KAPNICK, age 68. Director since 1980. Vice Chairman of
              General Dynamics Corporation since April 1991. President of
              Kapnick Investment Co. Inc. from February 1989 to March 1991.
[Photo]       Chairman of Compensation Committee and member of Audit, Finance
              and Regulatory and Environmental Affairs Committees. Other
              directorships: General Dynamics Corporation and Maytag
              Corporation.
 
 
 
              BYRON LEE, JR., age 64. Director since 1985. Retired. President
              and Chief Executive Officer of Nuclear Management and Resources
[Photo]       Council (NUMARC) for more than five years prior to August 1992.
              Member of Finance and Nuclear Operations Committees. Other
              directorship: Canonie Environmental Services Corp.
 
              EDWARD A. MASON, age 69. Director since 1980. Retired. Vice
              President, Research, of Amoco Corporation for more than five
[Photo]       years prior to July 1989. Chairman of Nuclear Operations
              Committee and member of Compensation and Regulatory and
              Environmental Affairs Committees. Other directorship: Symbollon
              Corporation.
 
 
 
 
              JAMES J. O'CONNOR, age 57. Director since 1978. Chairman of
              Edison. Chairman of Executive Committee and member of Nominating
[Photo]       Committee. Other directorships: Corning Incorporated, First
              Chicago Corporation, The First National Bank of Chicago,
              Scotsman Industries, Inc., Tribune Company and UAL Corporation.
 
 
 
 
                                       13
<PAGE>
 
              FRANK A. OLSON, age 61. Director since 1992. Chairman and Chief
              Executive Officer of The Hertz Corporation. Chairman of
[Photo]       Nominating Committee and member of Audit, Compensation and
              Regulatory and Environmental Affairs Committees. Other
              directorships: Becton, Dickinson and Company, Cooper Industries
              and UAL Corporation.
 
 
              SAMUEL K. SKINNER, age 55. Director since 1993. President of
              Edison since February 1993. General Chairman of the Republican
              National Committee from August 1992 to January 1993. Chief of
[Photo]       Staff to the President of the United States from December 1991
              to August 1992. Secretary of the United States Department of
              Transportation from February 1989 to December 1991. Member of
              Executive Committee. Other directorships: Chicago and
              Northwestern Holdings Corporation and LTV Corporation.
 
 
 
ADDITIONAL INFORMATION CONCERNING BOARD OF DIRECTORS
 
 
  Compensation of Directors--Directors who are not employes of Edison receive
an annual retainer of $20,000, a fee of $1,000 for each Board and Committee
meeting attended and an additional annual retainer of $2,500 for chairing a
Committee of the Board. Any non-employe Director who is also a member of the
Nuclear Operations Committee receives an additional annual retainer of $5,000.
Directors who are full-time employes of Edison receive no fees for service on
the Board of Directors. Directors' fees may be deferred. Directors, who have
never been an officer or an employe of Edison and who have attained at least
age 65 and completed the required period of Board service, are eligible for
retirement benefits upon retirement. Such benefits are paid to the retired
Director or a surviving spouse for a period equal to such Director's years of
service in an amount per year equal to the annual retainer for Board members as
in effect at the time of payment.
 
  Audit Committee--The Audit Committee consists of five Directors who are not
employes of Edison. Members serve three-year staggered terms. It is the
responsibility of the Audit Committee to review with Edison's independent
Auditors Edison's financial statements and the scope and results of such
Auditors' examinations, to monitor the internal accounting controls and
practices of Edison, to review the Annual Report to shareholders and to
recommend the appointment, subject to shareholder approval, of independent
Auditors. The Committee met two times during 1993. Members of the Committee are
James W. Compton (Chairman), Sue L. Gin, George E. Johnson, Harvey Kapnick, and
Frank A. Olson.
 
  Compensation Committee--The Compensation Committee consists of all Directors
who are not and have never been employes of Edison. Members serve one-year
terms. The Committee reviews management and executive compensation programs and
administers awards under Edison's Deferred Compensation Plan, Management
Incentive Compensation Plan and 1993 Long-Term Incentive Plan. The Committee
met two times during 1993. Members of the Committee are Harvey Kapnick
(Chairman), Jean Allard, James W. Compton, Sue L. Gin, Donald P. Jacobs, George
E. Johnson, Edward A. Mason, Frank A. Olson and Lando W. Zech, Jr.
 
  Executive Committee--The Executive Committee consists of five Directors.
Members serve one-year terms. The remaining Directors constitute alternates to
serve temporarily, in rotation, in place of
 
                                       14
<PAGE>
 
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 Committee met six times during
1993. Members of the Committee are James J. O'Connor (Chairman), Jean Allard,
James W. Compton, Samuel K. Skinner and Lando W. Zech, Jr.
 
  Finance Committee--The Finance Committee consists of five Directors. Members
serve one-year terms. The Committee reviews the scope and results of Edison's
financing program. The Committee met three times during 1993. Members of the
Committee are Jean Allard (Chair), Sue L. Gin, Donald P. Jacobs, Harvey Kapnick
and Byron Lee, Jr.
 
  Nominating Committee--The Nominating Committee consists of five Directors, a
majority of whom are not employes of Edison. 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 Edison. Nominations also may be presented by
shareholders at Edison's annual meeting of shareholders. The Committee met one
time during 1993. Members of the Committee are Frank A. Olson (Chairman), James
W. Compton, Donald P. Jacobs, George E. Johnson and James J. O'Connor.
 
  Nuclear Operations Committee--The Nuclear Operations Committee consists of
three Directors. Members serve one-year terms. The Committee reviews Edison's
nuclear operations. The Committee met nine times during 1993. Members of the
Committee are Edward A. Mason (Chairman), Byron Lee, Jr. and Lando W. Zech, Jr.
 
  Regulatory and Environmental Affairs Committee--The Regulatory and
Environmental Affairs Committee consists of five Directors. Members serve one-
year terms. The Committee reviews Edison's relationships with economic and
environmental regulatory agencies and reviews matters involving Edison before
such agencies. The Committee met four times in 1993. Members of the Committee
are Donald P. Jacobs (Chairman), Jean Allard, Harvey Kapnick, Edward A. Mason
and Frank A. Olson.
 
  Attendance at Meetings--During 1993, there were fifteen 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 1993,
was 95%. Each incumbent Director attended at least 83% of the meetings of the
Board and Board Committees of which the Director was a member.
 
                                       15
<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, 1993, the Chief Executive Officer and the other four most highly
compensated executive officers of Edison.
 
SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                      ANNUAL COMPENSATION
                                     ---------------------------       ALL OTHER
 NAMES AND PRINCIPAL                 SALARY(1)       BONUS(2)       COMPENSATION(3)
       POSITION           YEAR           $              $                  $
 -------------------      ----       ---------       --------       ---------------
<S>                       <C>        <C>             <C>            <C>
James J. O'Connor         1993        668,126
 Chairman (Chief          1992        739,084              0            77,332
 Executive Officer)       1991        662,738              0
Samuel K. Skinner(4)      1993        442,884
 President
Cordell Reed              1993        205,934
 Senior Vice President    1992        216,654              0            19,901
                          1991        205,227         10,261               --
                          1993
 Vice President           1992
                          1991
                          1993
 Vice President           1992
                          1991
</TABLE>
- --------
(1) Amounts shown include salary and compensation paid under the Edison
    Deferred Compensation Plan.
(2) Amounts shown include compensation earned under the Edison Management
    Incentive Compensation Plan.
(3) Amounts shown include matching contributions made by Edison pursuant to the
    Edison Employe Savings and Investment Plan ("ESIP") and premiums and
    administrative service fees paid by Edison on behalf of the named
    individuals under various group life insurance plans. For the year 1993,
    contributions made to the ESIP amounted to $      , $      , $       ,
    $        and $         on behalf of Messrs. O'Connor, Skinner, Reed,
          , and      , respectively. Premiums paid during 1993 for Split Dollar
    Life, Accidental Death and Travel Accident insurance policies for Messrs.
    O'Connor, Skinner, Reed,       , and      , respectively, are as follows:
    $          , $       and $      ; $       , $        and $       ; $      ,
    $       and $        ; $       , $      and $      ; and $       , $
    and $     . Edison 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 in each policy to the
    extent of the premiums and administrative service fees paid with respect to
    such policy.
(4) Mr. Skinner became employed by Edison in February 1993.
 
                                       16
<PAGE>
 
SERVICE ANNUITY SYSTEM PLAN
 
  The following table sets forth the annual retirement benefits payable under
the Service Annuity System Plan (including payments under the unfunded
equalization benefit plan) to employes who retire at age 65 at stated levels of
compensation and years of service at retirement (in 1994).
 
                               PENSION PLAN TABLE
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
 HIGHEST
  5-YEAR
 AVERAGE       ANNUAL NORMAL RETIREMENT BENEFITS AFTER SPECIFIED YEARS OF
 EARNINGS                               SERVICE*
 --------    --------------------------------------------------------------------
                15         20         25         30          35           40
             --------   --------   --------   --------   ----------   ----------
<S>          <C>        <C>        <C>        <C>        <C>          <C>
$  100,000   $ 35,410   $ 45,018   $ 53,967   $ 62,423   $   70,511   $   73,825
   200,000     70,821     90,036    107,934    124,847      141,023      147,649
   300,000    106,231    135,055    161,901    187,270      211,534      221,474
   400,000    141,641    180,073    215,868    249,693      282,046      295,298
   500,000    177,052    225,091    269,835    312,116      352,557      369,123
   600,000    212,462    270,109    323,802    374,540      423,069      442,948
   700,000    247,872    315,128    377,769    436,963      493,580      516,772
   800,000    283,283    360,146    431,736    499,386      564,092      590,597
   900,000    318,693    405,164    485,703    561,809      634,603      664,421
 1,000,000    354,103    450,182    539,670    624,233      705,114      738,246
 1,100,000    389,514    495,201    593,637    686,656      775,626      812,071
 1,200,000    424,924    540,219    647,604    749,079      846,137      885,895
 1,300,000    460,334    585,237    701,571    811,502      916,649      959,720
 1,400,000    495,745    630,255    755,538    873,926      987,160    1,033,544
 1,500,000    531,155    675,274    809,505    936,349    1,057,672    1,107,369
</TABLE>
- --------
*An employe may elect a marital annuity for a surviving spouse which would
   reduce the employe's normal retirement benefits. The amounts shown reflect
   certain assumptions as to total earnings, but do not reflect the reduction
   for Social Security benefits described below.
 
  Service Annuity System Plan--Edison maintains a non-contributory Service
Annuity System Plan for all regular employes of Edison. The Plan provides
benefits upon retirement at age 65 which are based upon years of service and
percentages of the employe's (a) total earnings and (b) highest consecutive
five-year average annual base pay, reduced by 25% (less one percentage point
for each year of service less than 35 years) of the employe's estimated Social
Security benefits. An employe may retire prior to attaining age 60 and
generally will receive actuarially reduced benefits. A non-executive employe
may work beyond age 65 with additional benefits accruing for earnings and
service after age 65. Contributions to the Plan by Edison are based upon
actuarial determinations that take into account the amount deductible for
income tax purposes and the minimum contribution required under the Employe
Retirement Income Security Act of 1974, as amended. The compensation used in
the computation of annual retirement benefits under the Plan is substantially
equivalent to salary compensation as reported in the Summary Compensation Table
but is limited by the Internal Revenue Code as of January 1, 1994 to $150,000
for any one employe. Any reduction in the annual retirement benefits payable to
management employes under the Plan as a result of any limitations imposed by
the Internal Revenue Code is restored by an unfunded equalization benefit plan
maintained by Edison. Credited years of service under the Plan for the persons
named in the Summary Compensation Table are as follows: James J. O'Connor, 30
years; Samuel K. Skinner, 1 year; Cordell Reed, 33 years;                 ,
years; and              ,    years.
 
                                       17
<PAGE>
 
EMPLOYMENT AGREEMENT
 
  Edison has an agreement with Mr. Skinner providing for a base salary of
$490,000 and an unfunded supplemental retirement benefit. The supplemental
retirement benefit does not vest until the completion of five years of
employment and provides 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 base salary during the preceding five years,
after five years of service, and increasing ratably annually to one-half of
such salary after ten years. The agreement also provides 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 is terminated by Edison for reasons other than death,
fraud or willful misconduct. The severance payment is subject to reduction to
the extent that Mr. Skinner receives compensation from another full-time
employer during the payment period.
 
COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION
 
                           [To Be Filed By Amendment]
 
 
                                     Compensation Committee
 
                                     Harvey Kapnick       George E. Johnson
                                     Jean Allard          Edward A. Mason
                                     James W. Compton     Frank A. Olson
                                     Sue L. Gin           Lando W. Zech, Jr.
                                     Donald P. Jacobs
 
 
                                       18
<PAGE>
         
SHAREHOLDER RETURN PERFORMANCE
 
  Set forth below is a line graph comparing the quarterly percentage change in
the cumulative total shareholder return on Edison Common Stock ("CWE") 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, 1993.
 
                  CUMULATIVE PERFORMANCE SINCE JANUARY 1, 1989
                       ASSUMING REINVESTMENT OF DIVIDENDS
 
                            (JANUARY 1, 1989 = $100)
 
<TABLE> 

                             [GRAPH APPEARS HERE]
 
               COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
             AMONG CWE COMMON STOCK, DJ UTIL AND S&P 500 COMPOSITE
 

<CAPTION> 
Measurement Period           CWE COMMON                  S&P 500
(Fiscal Year Covered)        STOCK          DJ UTIL      COMPOSITE 
- -------------------          ----------     -------      ---------
<S>                          <C>            <C>          <C>  
Measurement Pt-
12/31/88                     $100           $100         $100
FYE 12/31/89                 $124           $135         $132     
FYE 12/31/90                 $125           $129         $127
FYE 12/31/91                 $155           $149         $166
FYE 12/31/92                 $ 98           $155         $179
FYE 12/31/93                 $126           $170         $197
</TABLE> 
 
 

                             
 
                                       19
<PAGE>
 
                      ITEM B. CORPORATE RESTRUCTURING PLAN
 
  The management and the Board of Directors of Edison unanimously believe it is
in the best interest of Edison and its shareholders to change the corporate
structure of Edison so that it will become a separate subsidiary of a new
parent holding company, with the present holders of Edison Common Stock
becoming the holders of the common stock of the new parent.
 
  To carry out such restructuring, Edison has caused to be incorporated a new
Illinois corporation, Holding Company, which has a nominal amount of stock
outstanding and no present business or properties of its own. Holding Company,
in turn, has caused to be incorporated a new Illinois corporation, Merging
Corp. The outstanding Holding Company stock is presently owned by Edison, and
the outstanding Merging Corp. stock is presently owned by Holding Company.
 
  Edison and Merging Corp. have entered into the Merger Agreement under which,
subject to shareholder and regulatory approvals and the satisfaction or waiver
of certain conditions, Edison will become a subsidiary of Holding Company
through the Merger of Merging Corp. into Edison. In the Merger, the outstanding
shares of Edison Common Stock will be converted on a share-for-share basis into
Holding Company Common Stock. A copy of the Merger Agreement is attached to
this Prospectus and Proxy Statement as Exhibit A and is incorporated herein by
reference.
 
  In addition, Edison, Holding Company and Merging Corp. have entered into a
Supplemental Agreement which provides for the issuance of Holding Company
Common Stock in the Merger and pursuant to plans under which participants
currently receive Edison Common Stock. A copy of the Supplemental Agreement is
attached to this Prospectus and Proxy Statement as Exhibit B and is
incorporated herein by reference.
 
  It is intended that the restructuring will not have any adverse Federal
income tax consequences to the current holders of Edison Common Stock, Edison
Preferred Stock or Edison Preference Stock. See "Federal Income Tax
Consequences."
 
REASONS FOR THE RESTRUCTURING
 
  General. The primary purpose of the proposed restructuring into a holding
company system for Edison is to permit Edison affiliates to engage in non-
utility businesses without the prior approval of, or being regulated by, the
Illinois Commerce Commission ("Illinois Commission"), in part to permit timely
responses to competitive activities which could adversely affect the Edison
utility business, to insulate the Edison utility business from the business
risks and obligations of its non-utility affiliates and to provide financial
flexibility and facilitate capital allocation and managerial accountability.
 
  Competition. The demand for electricity provided by Edison and other utility
companies is becoming increasingly affected adversely by competition from non-
utility entities which seek to provide energy services to users of large
quantities of electricity, such as educational, health care and governmental
institutions, and industrial, commercial and wholesale customers.
 
  Such competition results in part from, among other things:
 
    (i) cogeneration facilities developed under the Public Utility Regulatory
  Policies Act of 1978 ("PURPA"), which produce electricity which may be used
  by the cogenerator or, as required by PURPA, purchased by the local
  electric utility; such facilities are qualifying facilities ("QFs");
 
                                       20
<PAGE>
 
    (ii) generation facilities which may be developed in accordance with the
  Energy Policy Act of 1992 ("Energy Act") by non-utility entities which sell
  electricity at wholesale to electric utilities; such facilities are exempt
  wholesale generators ("EWGs");
 
    (iii) generation facilities which provide electricity to a single user of
  large quantities of electricity; such facilities are typically situated on
  the property where such electricity is used;
 
    (iv) the use of natural gas and other forms of energy to satisfy energy
  needs which historically have been supplied primarily or exclusively by
  electricity;
 
    (v) FERC orders under the Energy Act which could require an electric
  utility, such as Edison, to transmit or "wheel" on its own transmission
  system power generated for wholesale sale by other electric utilities, QFs
  and EWGs; and
 
    (vi) unregulated energy services provided to users of large quantities of
  electricity by independent entities or affiliates of utility companies,
 
any of which may reduce the quantity, or change the use, of electricity sold by
an electric utility, such as Edison, and thereby reduce its revenues and
profits.
 
  Prior to recent amendments to the Illinois Public Utilities Act, Edison was
unable to take any action, either directly or through an Edison subsidiary, to
mitigate or prevent Edison revenue losses from competitive activities of others
without the prior approval of the Illinois Commission. Historically, many
Edison proceedings before the Illinois Commission have been lengthy and
contentious. In such proceedings, Illinois Commission staff, Edison competitors
and customers, special interest advocates and others often seek to obtain some
advantage at the expense of Edison generally, as conditions to such approval.
The probable lengthy duration of Illinois Commission proceedings, potentially
restrictive conditions in any Illinois Commission order, subsequent reversal or
modification by the Illinois Commission of such order, and the possible legal
appeal, stay or reversal of any such order could prevent Edison, either
directly or through subsidiaries, from taking timely and effective competitive
action to mitigate or prevent revenue loss.
 
  Furthermore, the uncertainties about whether and when the Illinois Commission
might issue an order permitting Edison or its subsidiaries to provide energy
services to a particular customer, the results of any legal appeal of such
order and the possibility that such services could be regulated by the Illinois
Commission, could dissuade such customer from contracting to obtain such
services from Edison or its subsidiaries. Edison believes that such
uncertainties were the primary, and perhaps only, reason that the Metropolitan
Pier and Exposition Authority ("MPEA") awarded the contract to provide district
cooling and heating services to its McCormick Place exposition facilities in
Chicago, to a non-utility entity and an unregulated subsidiary of a public
utility holding company, instead of to Edison. Instead of using electricity at
peak daytime rates to operate conventional air conditioning equipment at
McCormick Place, the Edison proposal would have used electricity to produce ice
at low off-peak rates to cool McCormick Place, whereas the proposal selected by
the MPEA will use natural gas to operate equipment to cool McCormick Place. The
result is the loss of a significant customer for Edison electricity, instead of
merely shifting electricity sales from peak daytime hours to off-peak hours.
 
  Consequently, Edison proposes to create a holding company which could create
subsidiaries to compete with non-utility businesses, including unregulated
subsidiaries of other public utility holding companies, to provide unregulated
energy and other services and products to Edison customers and others. Some of
such activities could reduce energy costs of users of large quantities of
electricity and thereby reduce or eliminate incentives for such users to obtain
electricity from other sources, or to switch from using electricity to natural
gas or another form of energy.
 
                                       21
<PAGE>
 
  See "Illinois Public Utilities Act."
 
  Other. The Edison holding company system will clearly separate its electric
utility business from the non-utility businesses of other Holding Company
subsidiaries. Operating management of Edison will continue to maintain its
focus on meeting its public utility responsibilities. The separation of utility
and non-utility activities will (i) facilitate the allocation of expenses, (ii)
protect Edison from any adverse effects of non-utility operations, (iii)
facilitate the regulation of the Edison utility operations by the Illinois
Commission and (iv) permit the Edison capital structure to be managed
efficiently.
 
  The non-utility subsidiaries of Holding Company would have the flexibility to
use various financing techniques suitable for non-utility businesses, without
any impact on the capital structure or credit of Edison. Such non-utility
businesses could pursue business opportunities which potentially could enhance
the financial strength and operating results of Holding Company.
 
  The Edison electric utility business is expected to constitute the
predominant part of Holding Company's earning power for the foreseeable future.
Edison operations will continue to be subject to the jurisdiction of the
Illinois Commission, FERC and NRC, and conducted with the same assets and
management. The management and Board of Directors of Edison believe that the
restructuring will have no adverse effect on Edison, its security holders or
its customers.
 
MERGER AGREEMENT
 
  The Merger Agreement has been unanimously approved by the Boards of Directors
of Edison and Merging Corp., and they have executed the Merger Agreement,
subject to its approval by the holders of the outstanding Edison Common Stock,
Edison Preferred Stock and Edison Preference Stock as described under "Voting."
In the Merger,
 
    (1) each outstanding share of Edison Common Stock will be converted into
  one new share of Holding Company Common Stock;
 
    (2) each outstanding share of Edison Preferred Stock and each outstanding
  share of Edison Preference Stock will remain outstanding and unchanged (see
  "Treatment of Preferred and Preference Stock");
 
    (3) the outstanding shares of Merging Corp. common stock will be
  converted into the same number of shares of Edison Common Stock which are
  outstanding immediately prior to the effective time of the Merger, and all
  of the Edison Common Stock will then be owned by Holding Company; and
 
    (4) the shares of Holding Company Common Stock presently held by Edison
  will be cancelled.
 
As a result, Edison will become a subsidiary of Holding Company, and all of the
Holding Company Common Stock outstanding immediately after the Merger will be
owned by the holders of Edison Common Stock outstanding immediately prior to
the Merger. See Exhibit A.
 
  The Edison Preferred Stock, Edison Preference Stock, Warrants, first mortgage
bonds, debentures and other long-term debt of Edison will be unchanged and will
continue to be outstanding securities and obligations of Edison after the
Merger. The Edison first mortgage bonds will continue to be secured by a first
mortgage lien on all properties of Edison which are currently subject to such
lien. The Edison Restated Articles of Incorporation as then in effect will not
be changed as a result of the Merger.
 
SUPPLEMENTAL AGREEMENT
 
  Holding Company, Edison and Merging Corp. have entered into a Supplemental
Agreement in which (a) Holding Company has agreed to issue Holding Company
Common Stock in the Merger and under the Edison Stock Plans (see "Stock
Plans"), (b) Edison and Merging Corp. have agreed to merge pursuant to the
Merger Agreement and (c) Edison and Merging Corp. have agreed not to amend the
Merger Agreement without the consent of Holding Company. See Exhibit B.
 
                                       22
<PAGE>
 
REQUIRED REGULATORY APPROVALS
 
  Public Utility Holding Company Act of 1935. Commonwealth Edison Company of
Indiana, Inc. ("Indiana Company"), is a public utility company and a wholly-
owned subsidiary of Edison, which is thus a public utility holding company as
well as a public utility company. As a result of the Merger, Holding Company
will become an affiliate of both Edison and the Indiana Company. Section
9(a)(2) of the 1935 Act requires the prior approval of the SEC under Section 10
of the 1935 Act for any person to become an affiliate of more than one public
utility company, and Holding Company has applied for such approval. Holding
Company has also applied to the SEC for an order exempting Holding Company from
all provisions of the 1935 Act, except Section 9(a)(2) thereof. The basis for
such exemption is that Holding Company and Edison are each organized and carry
on their business substantially in Illinois, and that Holding Company derives
no material part of its income from the Indiana Company.
 
  Federal Power Act. The FERC has held that the transfer of common stock of a
public utility company, such as Edison, from its existing shareholders to a
holding company in a transaction such as the Merger constitutes a transfer of
the "ownership and control" of the facilities of such utility which is subject
to FERC jurisdiction under the Federal Power Act ("FPA"), and is thus a
"disposition of facilities" subject to FERC review and approval under Section
203 of the FPA; Edison has applied for such approval.
 
  Atomic Energy Act. A provision in the Atomic Energy Act requires NRC consent
for the transfer of control of NRC licenses. In response to an inquiry from
another utility, the NRC Staff has asserted that this provision applies to the
creation of a holding company by an NRC-licensed utility company in a
transaction such as the Merger. Edison holds several NRC licenses, including
operating licenses for its nuclear generating stations, and has applied for NRC
approval under the Atomic Energy Act of the transfer of control of such
licenses in the Merger.
 
  Conditions. The Merger is conditioned on the receipt of orders satisfactory
to Edison and Holding Company from the SEC, FERC and NRC in response to the
applications described above.
 
ILLINOIS PUBLIC UTILITIES ACT
 
  The Illinois Public Utilities Act ("Illinois Act") requires prior Illinois
Commission approval of reorganizations of Illinois public utilities, such as
Edison, and the Merger is such a reorganization. However, Amendments ("1993
Amendments") to the Illinois Act which became effective on July 13, 1993,
permit certain Illinois electric utilities, including Edison, to create and
become a subsidiary of a holding company on or before January 14, 1995, without
the approval or consent of the Illinois Commission, except that such date would
be extended by a petition for such extension filed with the Illinois Commission
on such date, until the Illinois Commission makes certain findings and denies
such petition.
 
  The 1993 Amendments were adopted to enable Edison and any other qualifying
Illinois electric utility to reorganize into a holding company system without
the approval or consent of the Illinois Commission in order to avoid the delays
which are inherent in Illinois Commission proceedings on utility reorganization
applications; Illinois Commission proceedings on another recent and very
similar Illinois utility reorganization application endured for more than two
and two-thirds years before the Illinois Commission approved such
reorganization. The 1993 Amendments recognize that it is important for Illinois
electric utilities to form holding companies expeditiously to enable them to
respond quickly to current and expected competitive activities of non-utility
entities, as described under "Reasons for the Restructuring--Competition."
 
  The restructuring of Edison into a holding company system which is described
in this Prospectus and Proxy Statement is a reorganization permitted by the
1993 Amendments and will not require the approval or consent of the Illinois
Commission.
 
                                       23
<PAGE>
 
  The 1993 Amendments also permit an Illinois electric utility which has
initiated certain actions to create and become a subsidiary of a holding
company pursuant to the 1993 Amendments, to form, invest in, and guarantee
obligations of subsidiaries which engage in specified energy related
businesses, without the approval or consent of the Illinois Commission.
 
  The 1993 Amendments also (i) require Holding Company to pay or reimburse
Edison for all costs incurred by Edison in connection with the Merger, if it
occurs; (ii) permit Edison to make a loan to Holding Company of up to the
lesser of $10 million or 2.5% of Edison's retained earnings as reported in the
most recent Annual Report filed by Edison with the Illinois Commission, bearing
interest at the rate of 10% per annum, and require that such loan be repaid not
later than 240 days after the Merger occurs; (iii) require Holding Company and
Edison to file certain information with the Illinois Commission; (iv) require
the Illinois Commission to reduce Edison's rates to reflect additional revenues
it would have earned if subsidiaries of Edison or Holding Company had not
provided services specified in the 1993 Amendments, if the Illinois Commission
finds that there was no reasonable probability that customers for such services
would have obtained such services from other sources or provided such services
for themselves; (v) limit the amount of Edison investments in and guarantees of
obligations of subsidiaries formed pursuant to the 1993 Amendments, including
CECo Enterprises and its subsidiaries; (vi) require Edison to transfer or
liquidate its interest in subsidiaries formed pursuant to the 1993 Amendments,
including CECo Enterprises and its subsidiaries, if Edison is not a subsidiary
of Holding Company on January 14, 1995, or such later date as may be determined
in an Illinois Commission order which makes certain findings and denies a
petition to extend such date; (vii) provide for Illinois Commission hearings on
contracts or arrangements pursuant to which Edison provides services and
facilities to its affiliates, including CECo Enterprises; and (viii) require
Edison to make any portion of its electric distribution and transmission
facilities which would be used by an Edison affiliate to make an unregulated
sale of electricity, available at the same price and under the same terms and
conditions to any other person who offers to make such sale.
 
TRANSFER OF EDISON ASSETS TO HOLDING COMPANY
 
  CECo Enterprises has been formed by Edison pursuant to the 1993 Amendments,
and will engage through subsidiaries, including Northwind Inc., only in energy
related businesses permitted by the 1993 Amendments until CECo Enterprises is
transferred to Holding Company. The 1993 Amendments require that Edison
transfer or liquidate its interest in CECo Enterprises on the date that Edison
becomes a subsidiary of Holding Company; consequently, Edison intends to
transfer to Holding Company on such date, the stock of CECo Enterprises as a
dividend on the Edison Common Stock held by Holding Company.
 
  Except for dividends or other distributions with respect to Edison Common
Stock held by Holding Company, it is expected that Edison will not transfer
without adequate consideration any of its assets to Holding Company or any
Holding Company subsidiaries. Any transactions, other than dividends on Edison
Common Stock held by Holding Company and transactions permitted by the 1993
Amendments, between Edison and any of its affiliates, including Holding
Company, would require the prior approval of the Illinois Commission.
 
DIVIDEND POLICY
 
  Holding Company does not now, nor will it after the Merger, conduct directly
any business operations from which it will derive any revenues. Holding Company
plans to obtain funds for its own operations from dividends paid to Holding
Company on the stock of its subsidiaries, and from sales of securities or debt
incurred by Holding Company. Dividends on Holding Company Common Stock will
initially depend upon the earnings, financial condition and capital
requirements of Edison, and its ability to pay dividends on the Edison Common
Stock owned by Holding Company. It is currently contemplated
 
                                       24
<PAGE>
 
that Holding Company will pay quarterly dividends on Holding Company Common
Stock at the same rate, and on approximately the same schedule as, dividends
have most recently been paid on Edison Common Stock. The quarterly dividend
most recently declared by the Edison Board of Directors on Edison Common Stock
was 40c per share payable February 1, 1994, to holders of record of such stock
on December 31, 1993.
 
TREATMENT OF PREFERRED AND PREFERENCE STOCK
 
  The Merger and restructuring will not result in any change in the outstanding
shares of Edison Preferred Stock or Edison Preference Stock. The decision to
have the Edison Preferred Stock and Edison Preference Stock continue as
securities of Edison is based upon, among other factors, a desire not to alter
or potentially alter the nature of the investment represented by such stock, as
well as the need of Edison not to foreclose future issuances of Preferred Stock
and Preference Stock to help meet its capital requirements. The electric
utility operations of Edison presently constitute and are expected to continue
to constitute, the predominant part of the consolidated assets and earning
power of Holding Company. Accordingly, it is believed that the investment
ratings of the Edison Preferred Stock and Edison Preference Stock will not be
affected by the Merger, and that such shares will retain their qualification
for legal investment for certain investors, by remaining as capital stock of
Edison. Edison Preferred Stock and Edison Preference Stock will continue to
rank senior to Edison Common Stock as to dividends and as to assets of Edison
upon any liquidation.
 
  The restructuring is not expected to affect adversely the holders of Edison
Preferred Stock or Edison Preference Stock. However, neither will the assets or
earnings of the Holding Company subsidiaries (other than Edison) be of any
potential benefit to the holders of such stock if the restructuring is
consummated. See "Transfer of Edison Assets to Holding Company."
 
  After the Merger, Edison will continue to be subject to the informational
requirements of the 1934 Act, and will be required to hold annual meetings of
its Preferred, Preference and Common shareholders. However, Edison may decide
not to solicit proxies from its Preferred and Preference shareholders for the
election of Directors and other actions not requiring class votes of such
shareholders, because the shares of Edison Common Stock to be held by Holding
Company will have sufficient voting power to elect Edison Directors and to take
such action.
 
POSSIBLE MINORITY INTEREST
 
  As of January 21, 1994, there were outstanding (i) 285,806 shares of Edison
Preferred Stock which are convertible at the option of their holders into an
aggregate of 291,522 shares of Edison Common Stock, and (ii) 128,550 Warrants
which are convertible at the option of their holders into an aggregate of
42,850 shares of Edison Common Stock. Such Edison Preferred Stock and Warrants
will not be changed in the Merger, and thereafter will continue to be
convertible into shares of Edison Common Stock. Immediately after the Merger,
Holding Company will own all of the outstanding shares of Edison Common Stock.
 
  Shares of Edison Common Stock issued upon conversion of Edison Preferred
Stock and Warrants prior to the effective time of the Merger will be converted
in the Merger into shares of Holding Company Common Stock, which will be listed
and traded on the New York, Chicago and Pacific Stock Exchanges.
 
  Following the Merger the Edison Common Stock will no longer be listed or
traded on any stock exchange and there will be no other public market for any
shares of Edison Common Stock into which Edison Preferred Stock or Warrants are
converted after the Merger.
 
  The minority interest in Edison Common Stock which would be created by the
conversion of Edison Preferred Stock or Warrants into shares of Edison Common
Stock after the effective time of the Merger, would require Edison to pay to
the holders of such shares of Edison Common Stock dividends at the same times
and in the same amounts as Edison pays dividends to Holding Company on its
shares of Edison Common Stock. The amount of dividends on Edison Common Stock
following the Merger is expected to be greater than the amount of dividends on
Holding Company Common Stock to the extent Holding Company needs funds to pay
its expenses and to invest in its subsidiaries.
 
                                       25
<PAGE>
 
AMENDMENT OR TERMINATION
 
  By mutual consent of their respective Boards of Directors, Edison and Merging
Corp. may amend any of the terms of the Merger Agreement at any time before or
after its approval by their respective shareholders, but not after the time
that the Articles of Merger are filed with the Illinois Secretary of State, but
no such amendment may, in the sole judgment of the Board of Directors of
Edison, materially and adversely affect the rights of the holders of Edison
stock.
  The Merger Agreement may be terminated and the Merger abandoned at any time
before or after the shareholders of Edison and Merging Corp. have approved the
Merger Agreement, by action of the Board of Directors of Edison if it
determines that consummation of the transactions provided for in the Merger
Agreement would, for any reason, be inadvisable or not in the best interests of
Edison or its shareholders.
 
RIGHTS OF DISSENTING SHAREHOLDERS
 
 
  Sections 11.65 and 11.70 of the Illinois Business Corporation Act of 1983
("Illinois Business Corporation Act") are set forth in Exhibit D and provide
that the holders of Edison Common Stock, Edison Preferred Stock and Edison
Preference Stock entitled to vote at the regular annual meeting have the right
to dissent from consummation of the Merger and obtain the "fair value" of their
shares if the Merger is effected.
  In order to perfect such dissenters' rights, a shareholder must (a) deliver
to Edison at the Office of the Corporate Secretary, 37th Floor, 10 South
Dearborn Street, P.O. Box 767, Chicago, Illinois 60690-0767, prior to the
taking of the vote of the shareholders upon the approval of the Merger
Agreement, a written demand for payment for his or her shares if the Merger is
consummated; and (b) not vote his or her shares in favor of the approval of the
Merger Agreement.
 
 
  Within 10 days after the Merger becomes effective or 30 days after delivery
of the written demand for payment, whichever is later, Edison will advise each
shareholder who perfects his or her right to dissent of the opinion of Edison
as to the estimated fair value of the shareholder's shares. "Fair value" with
respect to a dissenter's shares means the value of such shares immediately
before the consummation of the Merger, excluding any appreciation or
depreciation in anticipation of the Merger, unless such exclusion would be
inequitable. At such time, Edison must elect to (a) make a commitment to
purchase such shares at such estimated fair value or (b) instruct such
dissenting shareholder to sell his or her shares (which, with respect to Edison
Common Stock, will have been converted into shares of Holding Company Common
Stock) within 10 days thereafter. Edison may instruct the shareholder to sell
shares only if there is a public market on which such shares may be readily
sold. Such a market will exist for Edison Common Stock (which will have been
converted into Holding Company Common Stock at the Effective Time of the
Merger) because the Holding Company Common Stock will be listed on the New
York, Chicago and Pacific Stock Exchanges immediately following the Merger.
Such a public market will exist for Edison Preferred Stock and for only certain
Series of Edison Preference Stock. See "Edison Preferred Stock and Edison
Preference Stock Market Information." If Edison elects to direct the dissenting
shareholder to sell his or her shares and the shareholder does not sell them
within such 10-day period, the shareholder shall be deemed to have sold such
shares of Holding Company Common Stock or Edison Preferred Stock, or Series of
Edison Preference Stock which are listed on the New York Stock Exchange, at the
average closing price of such Stock on such Exchange during such 10-day period,
or to have sold his or her shares of other Series of publicly traded Edison
Preference Stock at the average of the bid and asked price for such shares
quoted by a principal market maker during such 10-day period, as the case may
be.
 
  A shareholder who perfects his or her right to dissent retains all rights of
a shareholder until the Merger is consummated, at which time Edison will pay to
each dissenter, if Edison has not instructed the dissenting shareholders to
sell their shares in the public market, the amount Edison estimates to be the
fair value of such dissenter's shares, plus interest from the date the Merger
was consummated until the date of payment, upon receipt by Edison of the
certificates representing such shares. Edison will include with such payment a
written explanation of the manner by which the interest was calculated.
 
                                       26
<PAGE>
 
  If the shareholder does not agree with the Edison estimated fair value or
amount of interest, the shareholder must notify Edison in writing, within 30
days after delivery of the Edison statement of fair value, of the shareholder's
estimated fair value of such shares and amount of interest, and demand payment
of the difference between the shareholder's estimate and (a) the amount paid by
Edison or (b) the proceeds (or the amount deemed to be proceeds) of the sale by
the shareholder, whichever is applicable because of the option selected by
Edison, as described above. If, within 60 days after delivery to Edison of the
shareholder's notification of estimated fair value and amount of interest,
Edison and the shareholder have not agreed in writing on the fair value of the
shares or amount of interest, Edison shall either pay the shareholder the
difference between the respective estimated values or file a petition in the
Circuit Court of Cook County, Illinois, requesting the Court to determine the
fair value of the shares and amount of interest. If the Court determines that
the fair value of the shares plus interest exceeds the amount paid by Edison or
the proceeds of the sale of shares, as the case may be, the dissenting
shareholder shall be entitled to judgment for the amount of the excess. The
Court may also assess the costs of the proceeding against either Edison or one
or more dissenting shareholders, upon making certain findings.
 
  In connection with the Merger, Edison intends to reserve the right to elect,
with respect to Common Stock and Preferred Stock, and Preference Stock for
which there is a public market, (a) to offer to pay to dissenting shareholders
the original estimate of Edison of the fair value of such shares and to pay any
additional amount agreed upon by Edison and the shareholder or ordered by the
Court to be paid by Edison to the shareholder as provided in the Illinois
Business Corporation Act, or (b) to direct a dissenting shareholder to sell his
or her shares and to pay only that amount, if any, in excess of the proceeds of
such sale (or the amount of proceeds deemed to have been received) as may be
agreed upon by Edison and the shareholder or ordered by the Court to be paid by
Edison to the shareholder as provided in the Illinois Business Corporation Act.
With respect to Edison Preference Stock for which there is no public market,
Edison does not have the option described in (b) of the preceding sentence and
it will pay to dissenting holders of such shares the fair value of such shares
determined as described herein.
 
  In perfecting a shareholder's right to dissent, neither a vote against
approval of the Merger Agreement nor a proxy directing such a vote will be
deemed to satisfy the requirement that a written demand for payment be
delivered to Edison prior to the taking of the vote thereon. However, a
shareholder who has delivered such written demand before the taking of the vote
thereon will not be deemed to have waived his or her right to dissent either by
failing to vote against approval of the Merger Agreement or by failing to
furnish a proxy directing such vote.
 
  Under the Merger Agreement, the Edison Board of Directors has the right to
abandon the Merger for any reason (even after shareholder approval but before
the time the Articles of Merger are filed with the Illinois Secretary of
State), and such right may be exercised if the Edison Board of Directors
considers the aggregate cost of purchasing dissenting shares to be
unacceptable.
 
EFFECTIVENESS OF THE RESTRUCTURING
 
  After the Edison shareholders have approved the Merger Agreement,
satisfactory orders of the SEC, FERC and NRC have been received, and all other
conditions to the Merger have been satisfied or waived, Edison and Merging
Corp. will file Articles of Merger with the Illinois Secretary of State. The
Merger will thereafter become effective on the date that the Illinois Secretary
of State issues a Certificate of Merger in accordance with the Illinois
Business Corporation Act.
 
EXCHANGE OF STOCK CERTIFICATES
 
  If the Merger is effected, it will not be necessary for holders of Edison
Common Stock to exchange their existing stock certificates for certificates for
Holding Company Common Stock. The certificates which presently represent
outstanding shares of Edison Common Stock will automatically represent shares
of Holding Company Common Stock. New certificates bearing the name of the
Holding Company will be issued in the future if, and as, certificates
representing presently outstanding shares of Edison Common Stock are presented
for exchange or transfer.
 
                                       27
<PAGE>
 
FEDERAL INCOME TAX CONSEQUENCES
 
  The Merger Agreement provides that the proposed restructuring will not occur
unless Edison receives either a ruling from the Internal Revenue Service or an
opinion of counsel, satisfactory to the Board of Directors, with respect to the
Federal income tax consequences of the Merger. Edison has received a ruling
from the Internal Revenue Service regarding the continuation of the Edison
affiliated group of corporations following the Merger. This ruling ensures,
among other matters, that Holding Company, Edison and all current Edison
subsidiaries will be entitled to file a consolidated Federal income tax return
following the Merger and that the distribution by Edison of the stock of CECo
Enterprises to Holding Company on the date of the Merger will not be a
currently taxable event. Edison has received an opinion from its counsel,
Sidley & Austin, regarding certain Federal income tax consequences of the
Merger, to the effect that:
 
    (1) no gain or loss will be recognized by non-dissenting holders of
  Edison Common Stock upon the conversion of Edison Common Stock into Holding
  Company Common Stock in the Merger;
 
    (2) no gain or loss will be recognized by non-dissenting holders of
  Edison Preferred Stock or Edison Preference Stock as a result of the
  Merger;
 
    (3) the basis of the Holding Company Common Stock deemed received in the
  Merger by non-dissenting holders of Edison Common Stock will be the same as
  the basis of the Edison Common Stock converted into such Holding Company
  Common Stock in the Merger;
 
    (4) the holding period of Holding Company Common Stock deemed received in
  the Merger by non-dissenting holders of Edison Common Stock will include
  the period during which they held the Edison Common Stock converted into
  such Holding Company Common Stock in the Merger, provided such Edison
  Common Stock is held as a capital asset by such holders at the effective
  time of the Merger; and
 
    (5) no gain or loss will be recognized by Holding Company or Edison as a
  result of the Merger.
 
  Holders of Edison Common Stock, Edison Preferred Stock or Edison Preference
Stock who contemplate dissenting from the Merger should consult their tax
advisors concerning the tax consequences thereof.
 
LISTING OF HOLDING COMPANY COMMON STOCK
 
  Holding Company will apply to have its Common Stock listed on the New York,
Chicago and Pacific Stock Exchanges. It is expected that such listings will
become effective on the effective date of the Merger, subject to the rules of
the New York, Chicago and Pacific Stock Exchanges.
 
REGULATION OF HOLDING COMPANY
 
  Holding Company, as the owner of the Edison Common Stock and, indirectly, the
Indiana Company common stock, will be a holding company under the 1935 Act.
However, Holding Company will be exempt from all provisions of the 1935 Act
except Section 9(a)(2) thereof, which would require prior SEC approval of the
direct or indirect acquisition by Holding Company of 5% or more of the voting
securities of any other electric or gas utility company. There are also limits
on the extent to which Holding Company and its non-utility subsidiaries can
enter into businesses which are not "functionally related" to the electric
utility business without raising questions about Holding Company's exempt
status. SEC policies regarding the scope of permissible non-utility activities
of a public utility holding company are subject to change but guidelines
established in prior decisions of the SEC would require Holding Company to
remain engaged primarily and predominantly in the electric utility business and
to limit the size of its activities outside of such business relative to
Holding Company as a whole.
 
  Holding Company has no present intention of becoming a registered holding
company subject to regulation by the SEC under the 1935 Act.
 
                                       28
<PAGE>
 
MANAGEMENT
 
  The Directors of Edison will also become the Directors of Holding Company at
the effective time of the Merger, and they will thereafter serve as the
Directors of both companies. If the Edison shareholders approve the Merger
Agreement, they will be considered also to have ratified the election of such
persons as the Directors of Holding Company. Until the Merger becomes
effective, James J. O'Connor, Chairman and a Director of Edison, and Samuel K.
Skinner, President and a Director of Edison, will be the only Directors of
Holding Company.
 
  The current executive officers of Holding Company are also executive officers
of Edison. The Holding Company executive officers are:
 
<TABLE>
              <S>                                               <C>
              James J. O'Connor                                 Chairman
              Samuel K. Skinner                                 President
              John C. Bukovski                                  Vice President
              Roger F. Kovack                                   Comptroller
              Dennis F. O'Brien                                 Treasurer
              David A. Scholz                                   Secretary
</TABLE>
 
HOLDING COMPANY CAPITAL STOCK
 
  Authorized. The authorized capital stock of Holding Company consists of 400
million shares of Common Stock, without par value, the provisions of which are
included in the Holding Company Articles of Incorporation attached to this
Prospectus and Proxy Statement as Exhibit C.
 
  Common Stock. Holders of Holding Company Common Stock are entitled to receive
(a) dividends when, as and if declared by its Board of Directors, and (b) all
of the assets of Holding Company available for distribution on a pro rata basis
upon its liquidation, dissolution or winding up, after the payment of all debts
and other obligations.
 
  Each share of Holding Company Common Stock entitles its holder to one vote on
matters properly submitted to a vote of Holding Company shareholders, and, like
the holders of Edison Common Stock, they have the right to cumulate their votes
in elections of Directors.
 
  Except for differences described under "Comparative Shareholders' Rights,"
the provisions of the Articles of Incorporation of Holding Company which
establish the rights of the holders of its Common Stock are essentially the
same as those in the Restated Articles of Incorporation of Edison.
 
  No holder of Holding Company Common Stock has any preemptive or preferential
right to subscribe for any additional issue of Holding Company Common Stock or
to subscribe for any security convertible into Holding Company Common Stock. No
redemption, conversion or sinking fund provisions are applicable to shares of
Holding Company Common Stock.
 
  The Holding Company Common Stock issued in the Merger will be fully paid and
nonassessable.
 
COMPARATIVE SHAREHOLDERS' RIGHTS
 
  Edison and Holding Company are both Illinois corporations. When the Merger
becomes effective, holders of Edison Common Stock will become holders of
Holding Company Common Stock, and their rights will be governed by the Articles
of Incorporation of Holding Company ("Holding Company Articles") instead of the
Restated Articles of Incorporation of Edison ("Edison Articles"). Holding
Company Articles have been prepared in accordance with the Illinois Business
Corporation Act and give the Holding Company broad corporate powers to engage
in any lawful activity for which a corporation may be formed under the laws of
the State of Illinois. A copy of Holding Company Articles is attached as
Exhibit C to this Prospectus and Proxy Statement.
 
                                       29
<PAGE>
 
  Certain differences between the rights of holders of Holding Company Common
Stock and those of holders of Edison Common Stock are summarized below.
 
    (a) Preferred and Preference Stock. Holding Company Articles do not
  authorize any class of stock other than Common Stock. In addition to the
  presently outstanding shares of Edison Preferred Stock and Edison
  Preference Stock, as of January 21, 1994, there were 850,000 and 9,810,451
  authorized but unissued shares of Edison Prior Preferred Stock and Edison
  Preference Stock, respectively, which may be issued in series having such
  rights and preferences as may be designated by the Edison Board of
  Directors. There are no restrictions upon the issuance of any of such
  authorized shares except for any actions required by Illinois law to be
  taken by the Edison Board of Directors.
 
    (b) Common Stock. Holding Company Articles authorize the issuance of
  400,000,000 shares of Common Stock whereas the Edison Articles presently
  authorize the issuance of 250,000,000 shares of Common Stock. As of January
  21, 1994, there were 213,765,354 shares of Edison Common Stock issued and
  outstanding, and 5,988,171 shares of Edison Common Stock reserved for
  issuance under certain Stock Plans. There will be the same number of shares
  of Holding Company Common Stock issued, outstanding and reserved for
  issuance under such Stock Plans immediately after the Merger as the number
  of shares of Edison Common Stock which are issued, outstanding and reserved
  for such issuance immediately prior to the Merger. The additional
  authorized but unissued shares of Holding Company Common Stock could be
  used for stock splits or for acquisitions.
 
  Indemnification. Holding Company Articles require Holding Company in certain
circumstances to indemnify its Directors, officers, employes, agents and
certain other persons who serve Holding Company, to the full extent permitted
by the Illinois Business Corporation Act. Holding Company Articles also
authorize it to enter into agreements with its Directors, officers, employes
and others to provide for such indemnification.
 
  Although the Edison Articles currently contain no provisions relating to
indemnification, its By-Laws contain provisions requiring Edison in certain
circumstances to indemnify its Directors, officers, employes, agents and
certain other persons who serve Edison. The Edison shareholders at their
regular annual meeting will consider a proposal to add to the Edison Articles,
provisions relating to indemnification which are the same as those included in
the Holding Company Articles. See "Item C. Amendment of the Edison Restated
Articles of Incorporation."
 
  Limitation on Director Liability. Holding Company Articles include a
provision which limits the personal liability of Holding Company Directors for
monetary damages arising from breach of fiduciary duty, as authorized by a
change to the Illinois Business Corporation Act which became effective January
1, 1994.
 
  Although the Edison Articles currently contain no provisions limiting the
personal liability of Edison Directors for monetary damages, the Edison
shareholders at their regular annual meeting will consider a proposal to add to
the Edison Articles, provisions limiting the liability of Edison Directors
which are the same as those included in the Holding Company Articles. See "Item
C. Amendment of the Edison Restated Articles of Incorporation."
 
  Purpose Clause. The corporate purposes for which Edison may engage in
business are those related to electric, gas and certain other utility
businesses and related activities. Holding Company is authorized by its
Articles, as permitted by the Illinois Business Corporation Act, to engage in
any and all lawful businesses.
 
  Deferred Compensation Plan. Edison Articles permit the Edison Board of
Directors to establish a Deferred Compensation Plan for selected key executive
and management employes of Edison and its wholly-owned subsidiaries; Holding
Company Articles do not provide for any such Plan. The Holding Company Board of
Directors could establish a similar Plan even though the Holding Company
Articles do not specifically provide for such a Plan.
 
                                       30
<PAGE>
 
STOCK PLANS
 
  If the Merger is consummated, the Edison Employe Savings and Investment Plan,
1993 Long-Term Incentive Plan, Employe Stock Purchase Plan and Dividend
Reinvestment and Stock Purchase Plan will be amended to provide that Holding
Company Common Stock will be delivered instead of Edison Common Stock pursuant
to such Plans. By approving the Merger Agreement, the Edison shareholders will
be considered also to have ratified the amendment of such Plans to provide for
the delivery of Holding Company Common Stock thereunder.
 
TRANSFER AGENT AND REGISTRAR
 
  The Transfer Agent and Registrar for Edison Common Stock is First Chicago
Trust Company of New York. The Transfer Agent and Registrar for Holding Company
Common Stock is First Chicago Trust Company of New York.
 
EDISON COMMON STOCK MARKET PRICES AND DIVIDENDS
 
  Edison Common Stock is listed and principally traded on the New York, Chicago
and Pacific Stock Exchanges. The table below sets forth the dividends declared
and the high and low sales prices of Edison Common Stock for the periods
indicated as reported in The Wall Street Journal as New York Stock Exchange--
Composite Transactions.
 
<TABLE>
<CAPTION>
                                                                  PRICE RANGE
                                       DIVIDENDS             ---------------------------------
                                       DECLARED               HIGH                 LOW
                                       ---------             -------             -------
      <S>                              <C>                   <C>                 <C>
      1992
      First Quarter                      $0.75               $40 1/8             $33 3/4
      Second Quarter                      0.75                34 1/4              26 5/8
      Third Quarter                       0.40                27 5/8              22 7/8
      Fourth Quarter                      0.40                26                  21 3/4
      1993
      First Quarter                      $0.40               $28 1/4             $22 7/8
      Second Quarter                      0.40                29 7/8              25 5/8
      Third Quarter                       0.40                31 5/8              27 3/8
      Fourth Quarter                      0.40                30 5/8              27 3/8
      1994
      First Quarter
       (through March   , 1994)
</TABLE>
 
 
                                       31
<PAGE>
 
EDISON PREFERRED STOCK AND EDISON PREFERENCE STOCK MARKET INFORMATION
 
  The Edison Preferred Stock and six Series of Edison Preference Stock are
listed and principally traded on the New York, Chicago and Pacific Stock
Exchanges. The table below sets forth the high and low sales prices of Edison
Preferred Stock and Preference Stock of such Series for the periods indicated
as reported in The Wall Street Journal as New York Stock Exchange--Composite
Transactions.
 
<TABLE>
<CAPTION>
                    EDISON
                PREFERRED STOCK
                ---------------
                 HIGH     LOW
                ------- -------
<S>             <C>     <C>
1992
First Quarter   $39 3/4 $34 1/2
Second Quarter   34 3/4  27 1/4
Third Quarter    29      26 1/8
Fourth Quarter   28 3/4  26 1/2
1993
First Quarter   $28 1/2 $25 3/4
Second Quarter   28 7/8  26 1/2
Third Quarter    31 3/4  27 3/8
Fourth Quarter   30 3/4  28 1/8
1994
First Quarter
 (through
 March  ,
 1994)
<CAPTION>
                                                       EDISON PREFERENCE STOCK
                ------------------------------------------------------------------------------------------------------
                 $1.90 SERIES    $2.00 SERIES     $7.24 SERIES     $8.40 SERIES      $8.38 SERIES     $8.40 SERIES B
                --------------- --------------- ---------------- ----------------- ----------------- -----------------
                 HIGH     LOW    HIGH     LOW     HIGH     LOW     HIGH     LOW      HIGH     LOW      HIGH     LOW
                ------- ------- ------- ------- -------- ------- -------- -------- -------- -------- -------- --------
<S>             <C>     <C>     <C>     <C>     <C>      <C>     <C>      <C>      <C>      <C>      <C>      <C>
1992
First Quarter   $24 1/2 $22 7/8 $25 7/8 $24 1/8 $ 91     $87 1/2 $100 1/2 $ 97 7/8 $100     $ 96 1/2 $103     $100
Second Quarter   23 7/8  22      25      23 1/4   90 1/4  85      100 3/4   96 1/8   99 1/4   95 1/2  102      101
Third Quarter    24      22 1/8  25 3/4  23 1/2   90      85 1/2  101       97 1/4  100       95 1/2  102 1/8  100 3/4
Fourth Quarter   24      22 1/2  25 1/4  23 1/8   88      85       99 3/4   95       97 1/2   94      102 1/2  101 1/2
1993
First Quarter   $25 1/2 $22 3/8 $26     $23 5/8 $ 95 1/4 $85 1/2 $102     $ 94 5/8 $102     $ 94     $102     $ 98
Second Quarter   25 1/2  24      26 3/8  25 3/8   97      93      103       99 5/8  102 1/2   99      103       98
Third Quarter    26 3/8  24 3/4  27      25 1/2  102 1/2  93 1/2  105      101 1/4  105      100 1/2  101 3/4  101 3/4
Fourth Quarter   25 7/8  24 1/4  26 1/4  25      101 3/4  94 1/2  104 1/2  101 1/4  103      101      102 3/4  101
1994
First Quarter
 (through
 March  ,
 1994)
</TABLE>
 
  The $8.20, $8.85 and $9.25 Series of Edison Preference Stock are held by
institutional investors and are not publicly traded. The $1.96, $6.875, and
$9.00 Series of Edison Preference Stock are traded on a limited and sporadic
basis in the over-the-counter market, but prices are not quoted in any
automated quotation system. The following table sets forth the average of the
high and low per share bid prices of each such Series for the periods indicated
based on information provided to Edison by firms which deal in shares of such
Series.
 
<TABLE>
<CAPTION>
                                         EDISON PREFERENCE STOCK
                           ---------------------------------------------------
                            $1.96 SERIES    $6.875* SERIES     $9.00 SERIES
                           --------------- ----------------- -----------------
                            HIGH     LOW     HIGH     LOW      HIGH     LOW
                           ------- ------- -------- -------- -------- --------
      <S>                  <C>     <C>     <C>      <C>      <C>      <C>
      1992
      First Quarter        $27 1/8 $26 5/8                   $108 1/2 $106 3/8
      Second Quarter        27 1/8  26 3/4                    108 1/4  106 3/8
      Third Quarter         26 3/4  25 3/8                    109      106 3/8
      Fourth Quarter        26 3/4  24                        109 7/8  107 7/8
      1993
      First Quarter        $25 1/8 $24                       $112     $108 1/2
      Second Quarter        25 3/4  25 1/4 $101     $100      112 1/4  110 5/8
      Third Quarter         26 1/8  25 3/8  105 1/2  101 1/4  112 1/8  110 1/4
      Fourth Quarter        27 1/4  26 1/8  106 1/4  100 3/4  112 7/8  110 5/8
      1994
      First Quarter
       (through March   ,
       1994)
</TABLE>
- --------
*Issued in May 1993
 
  The foregoing average bid prices do not reflect retail mark-ups, mark-downs
or commissions and do not necessarily reflect actual transactions.
 
                                       32
<PAGE>
 
LEGAL OPINIONS
 
  Certain legal matters relating to the issuance of the Holding Company Common
Stock in the Merger will be passed upon by Sidley & Austin, One First National
Plaza, Chicago, Illinois 60603.
 
EXPERTS
 
  The financial statements and schedules included or incorporated by reference
in the 1992 Form 10-K, the March 31, 1993 Form 10-Q, the June 30, 1993 Form 10-
Q, the September 30, 1993 Form 10-Q and the January 28, 1993 Form 8-K,
incorporated by reference herein, have been audited by Arthur Andersen & Co.,
independent public accountants, as indicated in their reports with respect
thereto, and are incorporated herein in reliance upon the authority of said
firm as experts in accounting and auditing in giving their reports.
 
       ITEM C. AMENDMENT OF THE EDISON RESTATED ARTICLES OF INCORPORATION
 
  The Edison Board of Directors recommends that the shareholders approve a
proposal to amend the Edison Restated Articles of Incorporation by adding
Article SEVEN (i) to limit the personal liability of the Edison Directors to
Edison or its shareholders for monetary damages arising from breach of
fiduciary duty and (ii) to indemnify Edison Directors, officers, agents and
other persons who provide services to Edison, to the full extent permitted by
the Illinois Business Corporation Act. The proposed amendment to limit the
personal liability of Edison Directors is authorized by a change to the
Illinois Business Corporation Act that became effective on January 1, 1994. The
proposed amendment will assist Edison in attracting and retaining qualified
individuals to serve Edison.
 
BACKGROUND
 
  Until the amendment of the Illinois Business Corporation Act in July 1993,
Illinois was one of the few states that had not taken action to protect
corporate Directors who acted in good faith but were nevertheless threatened
with substantial liability from negligence claims. As a result of the change in
the law, an Illinois corporation is now able to provide its Directors with
liability protection similar to that available from companies incorporated in
the vast majority of other states, including Delaware. Liability is not limited
under Illinois law if the acts or omissions of Directors are in bad faith,
involve intentional wrongdoing, violate certain statutory provisions, or result
in profit or other advantage to which they are not legally entitled.
 
  The By-Laws of Edison currently provide for indemnification of Edison
Directors, officers, agents and other persons who serve Edison, to the full
extent permitted by the Illinois Business Corporation Act, and the proposed
amendment would add such a provision to the Edison Restated Articles of
Incorporation.
 
  Edison currently maintains liability insurance policies which indemnify
Edison's Directors and officers, the Directors and officers of subsidiaries of
Edison, and the trustees of Edison's Service Annuity Funds, against loss
arising from claims by reason of their legal liability for acts as such
Directors, officers or trustees, subject to limitations and conditions as set
forth in the policies. Among other limitations, the primary policy states that
no coverage is provided for loss representing "amounts which are deemed
uninsurable under the law pursuant to which this policy shall be construed".
 
TEXT OF THE PROPOSED AMENDMENT
 
  The text of Article SEVEN proposed to be added to the Edison Restated
Articles of Incorporation is as follows:
 
    (a) A director of the Company shall not be personally liable to the
  Company or its shareholders for monetary damages for breach of fiduciary
  duty as a director, except for liability (i) for any breach of the
  director's duty of loyalty to the Company or its shareholders, (ii) for
  acts or omissions not in
 
                                       33
<PAGE>
 
  good faith or that involve intentional misconduct or a knowing violation of
  law, (iii) under Section 8.65 of the Business Corporation Act of the State
  of Illinois, or (iv) for any transaction from which the director derived an
  improper personal benefit. If the Business Corporation Act of the State of
  Illinois is amended to authorize corporate action further eliminating or
  limiting the personal liability of directors, then the liability of a
  director of the Company shall be eliminated or limited to the full extent
  permitted by the Business Corporation Act of the State of Illinois, as so
  amended. Any repeal or modification of this paragraph (a) by the
  shareholders of the Company shall not adversely affect any right or
  protection of a director of the Company existing at the time of such repeal
  or modification.
 
    (b) Each person who is or was or had agreed to become a director or
  officer of the Company, and each person who is or was serving or who had
  agreed to serve at the request of the Board or an officer of the Company as
  an employe or agent of the Company or as a director, officer, employe, or
  agent, trustee or fiduciary of another corporation, partnership, joint
  venture, trust or other enterprise (including the heirs, executors,
  administrators or estate of such person), shall be indemnified by the
  Company to the full extent permitted by the Business Corporation Act of the
  State of Illinois or any other applicable laws as presently or hereafter in
  effect. Without limiting the generality of the foregoing, the Company may
  enter into one or more agreements with any person which provide for
  indemnification greater or different than that provided in this paragraph
  (b). Any repeal or modification of this paragraph (b) shall not adversely
  affect any right or protection existing hereunder or under any such
  agreement immediately prior to such repeal or modification.
 
REASONS FOR THE PROPOSED AMENDMENT
 
  Limitation of Director Liability. Directors of Illinois corporations are
required, under Illinois law, to perform their duties in good faith and with
that degree of care that an ordinarily prudent person in a like position would
use under similar circumstances. A Director may rely upon information, opinions
and reports prepared by certain offices or employes, professional advisors, or
committees of the Board. Decisions made on that basis are protected by the
"business judgment rule" and should not be questioned by a court in the event
of a lawsuit challenging such decisions. However, the expense of defending such
lawsuits and the inevitable uncertainties of applying the business judgment
rule to particular facts and circumstances mean, as a practical matter, that
Directors are not relieved of the threat of monetary damage awards. The Board
of Directors of Edison, therefore, believes that the proposed amendment should
be adopted in order to ensure that Edison will continue to be able to attract
and retain competent, qualified and talented persons to serve as its Directors.
 
  Indemnification. Although the Edison By-Laws currently provide for the
indemnification of Edison Directors, officers, agents and other persons who
serve Edison, such By-Laws could be changed unilaterally and without notice by
the Edison Board of Directors. The proposed amendment would add such provisions
to the Edison Restated Articles of Incorporation which can only be changed by
action of the Edison shareholders after notice. Indemnification provisions in
the Edison Restated Articles of Incorporation are thus less likely to be
changed than similar provisions in its By-Laws, and the enhanced stability,
predictability and security which result from including such provisions in the
Edison Restated Articles of Incorporation are expected to enhance the ability
of Edison to attract and retain qualified persons to serve it.
 
EFFECT OF THE PROPOSED AMENDMENT
 
  Limitation of Director Liability. The proposed amendment would protect the
Edison Directors against personal liability to Edison or its shareholders for
any breach of duty unless a judgment or other final adjudication adverse to
them establishes (i) a breach of duty of loyalty to Edison, (ii) acts or
omissions in bad faith or involving intentional misconduct or a knowing
violation of the law, (iii) acts violating the prohibitions contained in
Section 8.65 of the Illinois Business Corporation Act against certain improper
distributions of assets, or (iv) an improper personal benefit to a Director to
which he or she was not legally entitled.
 
                                       34
<PAGE>
 
  The amendment as proposed would not reduce the fiduciary duty of a Director;
it merely limits monetary damage awards to Edison and its shareholders arising
from certain breaches of the duty. It does not affect the availability of
equitable remedies, such as the right to enjoin or rescind a transaction, based
upon a Director's breach of fiduciary duty. The amendment also does not affect
a Director's liability for acts taken or omitted prior to the time it becomes
effective (after shareholder approval and upon filing with the Illinois
Secretary of State). The limitation of liability afforded by the proposed
amendment affects only actions brought by Edison or its shareholders, and does
not preclude or limit recovery of damages by third parties.
 
  Indemnification. The proposed amendment would not change the rights of Edison
Directors, officers, agents and other persons who serve Edison, to be
indemnified by it to the full extent permitted by the Illinois Business
Corporation Act, but would give them such rights under the Edison Restated
Articles of Incorporation as well as under the Edison By-Laws.
 
                          ITEM D. APPROVAL OF AUDITORS
 
  Subject to approval of the shareholders, the Board of Directors of Edison has
appointed Arthur Andersen & Co., independent public accountants, as Auditors to
examine the annual and quarterly consolidated financial statements of Edison
and its subsidiary companies for 1994. The shareholders will be asked at the
meeting to approve such appointment. The firm of Arthur Andersen & Co. has
audited the accounts of Edison since 1932. A representative of Arthur Andersen
& Co. will be present at the meeting to make a statement, if such
representative so desires, and to respond to shareholders' questions.
 
                                    *  *  *
 
  Any shareholder proposal intended to be presented at the 1995 annual meeting
of Edison shareholders must be received at the principal executive offices of
Edison by November 28, 1994, in order to be considered for inclusion in any
proxy materials of Edison relating to that meeting. Any such proposal should be
directed to the Secretary of Edison 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.
 
                         TRANSACTION OF OTHER BUSINESS
 
  As of the date of this Prospectus and Proxy Statement, management knows of no
matters to be brought before the annual meeting other than the matters referred
to in this Prospectus and Proxy Statement. If, however, further business is
presented, the proxy holders will act in accordance with their best judgment.
 
  By order of the Edison Board of Directors.
 
                                                 David A. Scholz
                                                   Secretary
 
March   , 1994
 
                                       35
<PAGE>
 
                                   EXHIBIT A
 
                          AGREEMENT AND PLAN OF MERGER
 
  THIS AGREEMENT AND PLAN OF MERGER ("Agreement") is dated as of January 28,
1994, between Commonwealth Edison Company, an Illinois corporation ("Edison"),
and CECo Merging Corporation, an Illinois corporation ("Merging Corp.").
 
                                   WITNESSETH
 
  WHEREAS, Edison has an authorized capitalization consisting of:
 
    (i) 250,000,000 shares of Common Stock, par value $12.50 per share
  ("Edison Common Stock"), of which 213,765,354 shares were issued and
  outstanding at January 21, 1994;
 
    (ii) 850,000 shares of Prior Preferred Stock, par value $100 per share
  ("Edison Prior Preferred Stock"), none of which were issued and outstanding
  at January 21, 1994;
 
    (iii) 285,806 shares of $1.425 Convertible Preferred Stock, without par
  value ("Edison Preferred Stock"), of which 285,806 shares were issued and
  outstanding at January 21, 1994; Edison Preferred Stock is convertible into
  Edison Common Stock at the rate of 1.02 shares of Edison Common Stock for
  each share of Edison Preferred Stock, subject to future adjustment; and
 
    (iv) 13,789,839 shares of Preference Stock, without par value ("Edison
  Preference Stock"), of which 13,789,839 shares were issued and outstanding
  at January 21, 1994; and
 
  WHEREAS, Merging Corp. has an authorized capitalization consisting of 100
shares of Common Stock, without par value ("Merging Corp. Common Stock"), all
of which are issued and outstanding and owned beneficially and of record by
CECo Holding Company, an Illinois corporation ("Holding Company"); and
 
  WHEREAS, Holding Company has an authorized capitalization consisting of
400,000,000 shares of Common Stock, without par value ("Holding Company Common
Stock"), of which 100 shares are issued and outstanding and owned beneficially
and of record by Edison; and
 
  WHEREAS, the Boards of Directors of Edison, Merging Corp. and Holding
Company, deem it advisable for Merging Corp. to merge with and into Edison
("Merger") in accordance with the Illinois Business Corporation Act of 1983, as
amended ("Act"), and this Agreement; and
 
  WHEREAS, Edison, Merging Corp. and Holding Company have entered into a
Supplemental Agreement dated as of January 28, 1994 ("Supplemental Agreement"),
pursuant to which Holding Company has agreed, among other things, to issue
shares of Holding Company Common Stock upon the conversion of Edison Common
Stock in the Merger.
 
  NOW THEREFORE, in consideration of the premises and the representations,
warranties and agreements herein contained, Edison and Merging Corp. agree that
Merging Corp. shall merge with and into Edison, Edison shall be the corporation
surviving the Merger and the terms and conditions of the Merger, the mode of
carrying it into effect and the manner and basis of converting shares in the
Merger shall be as follows:
 
                                   ARTICLE I
 
                                   THE MERGER
 
  (a) Subject to and in accordance with the provisions of this Agreement,
Articles of Merger shall be executed by Edison and Merging Corp. and filed in
the Office of the Secretary of State of Illinois as provided in Sections
11.25(a) and 1.10 of the Act.
 
                                      A-1
<PAGE>
 
  (b) The Merger shall become effective at the time ("Effective Time") the
Secretary of State of Illinois issues a Certificate of Merger in accordance
with Sections 11.25(b) and 11.40 of the Act.
 
  (c) At the Effective Time, Merging Corp. shall be merged with and into
Edison, Edison shall be and is designated as the surviving corporation and
shall continue its corporate existence under the laws of the State of Illinois
and the separate existence of Merging Corp. shall cease (Edison and Merging
Corp. are referred to herein as the "Constituent Corporations" and Edison, the
corporation designated as the surviving corporation, is referred to herein as
the "Surviving Corporation").
 
  (d) Prior to and after the Effective Time, Edison and Merging Corp.,
respectively, shall take all such action as may be necessary or appropriate in
order (i) to effect the Merger, and (ii) thereafter to carry out the purposes
of this Agreement to vest in the Surviving Corporation all the rights,
privileges, immunities and franchises, as of a public or a private nature, of
each Constituent Corporation; and all property, real, personal and mixed, and
all debts and all choses in action, and all and every other interest, of or
belonging to or due to, each Constituent Corporation, and the officers and
Directors of each Constituent Corporation as of the Effective Time shall take
all such action.
 
                                   ARTICLE II
 
                         TERMS OF CONVERSION OF SHARES
 
  At the Effective Time:
 
    (a) Each share of Edison Common Stock issued and outstanding immediately
  prior to the Effective Time shall thereupon, and without the surrender of
  the stock certificate therefor or any other action on the part of the
  holder thereof, be changed and converted into one fully paid and
  nonassessable share of Holding Company Common Stock;
 
    (b) The shares of Edison Prior Preferred Stock, if any, and Edison
  Preferred Stock and Edison Preference Stock issued and outstanding
  immediately prior to the Effective Time shall not be changed, converted or
  otherwise affected by the Merger, and each such share shall continue to be
  issued and outstanding and to be one fully paid and nonassessable share of
  the particular series of Edison Prior Preferred Stock, Edison Preferred
  Stock or Edison Preference Stock of the Surviving Corporation;
 
    (c) The shares of Merging Corp. Common Stock issued and outstanding
  immediately prior to the Effective Time shall be changed and converted into
  the number of shares of Edison Common Stock issued and outstanding
  immediately prior to the Effective Time, which shall thereupon be issued
  and fully paid and nonassessable shares of the Surviving Corporation;
 
    (d) Each share of Holding Company Common Stock issued and outstanding
  immediately prior to the Effective Time shall be cancelled and retired and
  all rights in respect thereof shall cease; and
 
    (e) As provided in the Supplemental Agreement, (i) the Edison Employe
  Savings and Investment Plan, 1993 Long-Term Incentive Plan, Employe Stock
  Purchase Plan and Dividend Reinvestment and Stock Purchase Plan
  (collectively the "Plans") will be amended to provide for the delivery of
  Holding Company Common Stock instead of Edison Common Stock thereunder;
  each right to acquire shares of Edison Common Stock, including, without
  limitation, rights (including stock options) to acquire Edison Common Stock
  pursuant to any of the Plans, granted and outstanding immediately prior to
  the Effective Time shall, by virtue of the Merger and without any action on
  the part of the holder thereof, be converted into and become a right to
  acquire the same number of shares of Holding Company Common Stock at the
  same price per share, and upon the same terms and subject to the same
  conditions as were applicable immediately prior to the Effective Time under
  the relevant right; and (ii) Holding Company shall reserve such number of
  shares of Holding Company Common Stock for purposes of the Plans as is
  equal to the number of shares of Edison Common Stock so reserved as of the
  Effective Time.
 
                                      A-2
<PAGE>
 
                                  ARTICLE III
 
                     ARTICLES OF INCORPORATION AND BY-LAWS
 
  (a) From and after the Effective Time, and until thereafter amended as
provided by law, the Restated Articles of Incorporation of Edison as in effect
immediately prior to the Effective Time shall be and continue to be the
Restated Articles of Incorporation of the Surviving Corporation.
 
  (b) From and after the Effective Time, the By-Laws of Edison as in effect
immediately prior to the Effective Time shall be and continue to be the By-Laws
of the Surviving Corporation until amended.
 
                                   ARTICLE IV
 
                             DIRECTORS AND OFFICERS
 
  The persons who are Directors and officers of Edison immediately prior to the
Effective Time shall continue as Directors and officers, respectively, of the
Surviving Corporation and shall continue to hold office as provided in the By-
Laws of the Surviving Corporation. If, at or following the Effective Time, a
vacancy shall exist in the Board of Directors or in the position of any officer
of the Surviving Corporation, such vacancy may be filled in the manner provided
in the By-Laws of the Surviving Corporation.
 
                                   ARTICLE V
 
                               STOCK CERTIFICATES
 
  Following the Effective Time, each holder of an outstanding certificate or
certificates theretofore representing shares of Edison Common Stock may, but
shall not be required, to surrender the same to Holding Company for
cancellation and exchange or transfer, and each such holder or transferee
thereof will be entitled to receive a certificate or certificates representing
the same number of shares of Holding Company Common Stock as the number of
shares of Edison Common Stock previously represented by the stock certificate
or certificates surrendered. Until so surrendered for cancellation and exchange
or transfer, each outstanding certificate which, prior to the Effective Time,
represented shares of Edison Common Stock shall be deemed and treated for all
corporate purposes to represent the ownership of the same number of shares of
Holding Company Common Stock as though such surrender for cancellation and
exchange or transfer thereof had taken place. The stock transfer books for
Edison Common Stock shall be deemed to be closed at the Effective Time, and no
transfer of shares of Edison Common Stock outstanding immediately prior to the
Effective Time shall thereafter be made on such books. Following the Effective
Time, the holders of certificates representing Edison Common Stock outstanding
immediately before the Effective Time shall cease to have any rights with
respect to stock of the Surviving Corporation and their sole rights shall be
with respect to the Holding Company Common Stock into which their shares of
Edison Common Stock shall have been converted in the Merger.
 
                                   ARTICLE VI
 
                            CONDITIONS TO THE MERGER
 
  Consummation of the Merger is subject to the satisfaction of the following
conditions:
 
    (a) The Merger shall have received such approval of the shareholders of
  each Constituent Corporation entitled to vote thereon as is required by the
  Act and the Articles of Incorporation of each Constituent Corporation.
 
                                      A-3
<PAGE>
 
    (b) There shall have been obtained either a ruling of the Internal
  Revenue Service satisfactory to the Board of Directors of Edison and its
  counsel, or an opinion of counsel satisfactory to the Board of Directors of
  Edison, with respect to the tax consequences of the Merger and other
  transactions incident thereto.
 
    (c) The Holding Company Common Stock to be issued and to be reserved for
  issuance as a result of the Merger shall have been approved for listing,
  upon official notice of issuance, by the New York, Chicago and Pacific
  Stock Exchanges.
 
    (d) A registration statement or registration statements relating to the
  shares of Holding Company Common Stock to be issued or reserved for
  issuance as a result of the Merger, shall be effective under the Securities
  Act of 1933, as amended, and shall not be the subject of any "stop order."
 
    (e) Edison shall have received all consents, approvals and legal opinions
  in form and substance satisfactory to Edison, that are necessary or
  appropriate for the consummation of the Merger and all other transactions
  contemplated thereby.
 
    (f) There shall be no litigation, proceedings or actions pending or
  threatened concerning the Merger which in the judgment of the Board of
  Directors of Edison renders consummation of the Merger inadvisable.
 
                                  ARTICLE VII
 
                       AMENDMENT, WAIVER AND TERMINATION
 
  (a) Edison and Merging Corp. by mutual consent of their respective Boards of
Directors may amend, modify or supplement this Agreement or waive any condition
set forth in Article VI hereof in such manner as may be agreed upon by them in
writing, at any time before or after approval of this Agreement by the
shareholders of Edison, but not after the time that the Articles of Merger are
filed with the Illinois Secretary of State ("Filing Time"); provided, however,
that no such amendment, modification, supplement or waiver shall, in the sole
judgment of the Board of Directors of Edison, materially and adversely affect
the rights of the shareholders of Edison.
 
  (b) Consummation of the Merger may be deferred by the Board of Directors of
Edison or any authorized officer of Edison for a reasonable period of time if
said Board or officer determines such deferral would be in the best interest of
Edison or its shareholders.
 
  (c) This Agreement may be terminated and the Merger and other transactions
herein provided for abandoned at any time prior to the Filing Time, whether
before or after approval of this Agreement by the shareholders of Edison, by
action of the Board of Directors of Edison if said Board of Directors
determines for any reason that the consummation of the transactions herein
provided for would for any reason be inadvisable or not in the best interests
of Edison or its shareholders.
 
                                  ARTICLE VIII
 
                                 MISCELLANEOUS
 
  (a) This Agreement may be executed in counterparts, each of which when so
executed shall be deemed to be an original, and such counterparts shall
together constitute but one and the same instrument.
 
  (b) This Agreement shall be governed by, and construed in accordance with,
the laws of the State of Illinois.
 
                                      A-4
<PAGE>
 
  IN WITNESS WHEREOF, Edison and Merging Corp., pursuant to approval and
authorization duly given by resolutions adopted by their respective Boards of
Directors, have each caused this Agreement and Plan of Merger to be executed by
its Chairman of the Board, its President or one of its Vice Presidents and
attested by its Secretary or one of its Assistant Secretaries.
 
                                          Commonwealth Edison Company
 
                                              /s/ James J. O'Connor
                                          By __________________________________
                                             James J. O'Connor
                                             Chairman
 
         /s/ David A. Scholz
Attest: _____________________________
        David A. Scholz
        Secretary
 
                                          CECo Merging Corporation
 
                                              /s/ James J. O'Connor
                                          By __________________________________
                                             James J. O'Connor
                                             Chairman
 
         /s/ David A. Scholz
Attest: _____________________________
        David A. Scholz
        Secretary
 
                                      A-5
<PAGE>
 
                                   EXHIBIT B
 
                             SUPPLEMENTAL AGREEMENT
 
  THIS SUPPLEMENTAL AGREEMENT ("Agreement") is dated as of January 28, 1994,
between Commonwealth Edison Company, an Illinois corporation ("Edison"), CECo
Holding Company, an Illinois corporation ("Holding Company") and CECo Merging
Corporation, an Illinois corporation ("Merging Corp.").
 
                                   WITNESSETH
 
  WHEREAS, Edison has an authorized capitalization consisting of:
 
    (i) 250,000,000 shares of Common Stock, par value $12.50 per share
  ("Edison Common Stock"), of which 213,765,354 shares were issued and
  outstanding at January 21, 1994;
 
    (ii) 850,000 shares of Prior Preferred Stock, par value $100 per share,
  none of which were issued and outstanding at January 21, 1994;
 
    (iii) 285,806 shares of $1.425 Convertible Preferred Stock, without par
  value ("Edison Preferred Stock"), of which 285,806 shares were issued and
  outstanding at January 21, 1994; Edison Preferred Stock is convertible into
  Edison Common Stock at the rate of 1.02 shares of Edison Common Stock for
  each share of Edison Preferred Stock, subject to future adjustment; and
 
    (iv) 13,789,839 shares of Preference Stock, without par value, of which
  13,789,839 shares were issued and outstanding at January 21, 1994; and
 
  WHEREAS, Merging Corp. has an authorized capitalization consisting of 100
shares of Common Stock, without par value ("Merging Corp. Common Stock"), all
of which are issued and outstanding and owned beneficially and of record by
Holding Company; and
 
  WHEREAS, Holding Company has an authorized capitalization consisting of
400,000,000 shares of Common Stock, without par value ("Holding Company Common
Stock"), of which 100 shares are issued and outstanding and owned beneficially
and of record by Edison; and
 
  WHEREAS, the Boards of Directors of Edison, Merging Corp. and Holding
Company, deem it advisable for Merging Corp. to merge with and into Edison
("Merger") in accordance with the Illinois Business Corporation Act of 1983, as
amended ("Act"), and the Agreement and Plan of Merger dated as of January 28,
1994 ("Merger Agreement"), between Edison and Merging Corp. in which they have
agreed to merge.
 
  NOW THEREFORE, in consideration of the premises and the representations,
warranties and agreements herein contained, Edison and Merging Corp. agree that
Merging Corp. shall merge with and into Edison, Edison shall be the corporation
surviving the Merger and the terms and conditions of the Merger, the mode of
carrying it into effect and the manner and basis of converting shares in the
Merger shall be as set forth in the Merger Agreement.
 
                                   ARTICLE I
 
                         TERMS OF CONVERSION OF SHARES
 
  At the time that the Merger becomes effective ("Effective Time"):
 
    (a) Each share of Edison Common Stock issued and outstanding immediately
  prior to the Effective Time shall thereupon, and without the surrender of
  the stock certificate therefor or any other action on the part of the
  holder thereof, be changed and converted into one fully paid and
  nonassessable share of Holding Company Common Stock;
 
                                      B-1
<PAGE>
 
    (b) The shares of Merging Corp. Common Stock issued and outstanding
  immediately prior to the Effective Time shall be changed and converted into
  the number of shares of Edison Common Stock issued and outstanding
  immediately prior to the Effective Time, which shall thereupon be issued
  and fully paid and nonassessable shares of Edison Common Stock;
 
    (c) Each share of Holding Company Common Stock issued and outstanding
  immediately prior to the Effective Time shall be cancelled, retired, and
  revert to an authorized but unissued share of Holding Company Common Stock,
  all rights in respect thereof shall cease, and the accounts of Holding
  Company shall be reduced by the $1,000 of capital and surplus applicable to
  such shares;
 
    (d) Holding Company shall deliver shares of Holding Company Common Stock
  pursuant to the Edison Employe Savings and Investment Plan, 1993 Long-Term
  Incentive Plan, Employe Stock Purchase Plan and Dividend Reinvestment and
  Common Stock Purchase Plan (collectively the "Plans"). Each right to
  purchase shares of Edison Common Stock, including, without limitation,
  rights (including stock options) to acquire Edison Common Stock pursuant to
  any of the Plans, granted and outstanding immediately prior to the
  Effective Time shall, by virtue of the Merger and without any action on the
  part of the holder thereof, be converted into and become a right to acquire
  the same number of shares of Holding Company Common Stock at the same price
  per share, and upon the same terms and subject to the same conditions as
  were applicable immediately prior to the Effective Time under the relevant
  right; and
 
    (e) Holding Company shall reserve such number of shares of Holding
  Company Common Stock for purposes of the Plans as is equal to the number of
  shares of Edison Common Stock so reserved as of the Effective Time.
 
                                   ARTICLE II
 
                                   DIRECTORS
 
  The persons who are Directors of Edison immediately prior to the Effective
Time shall at the Effective Time become Directors of Holding Company, and shall
continue to hold office as provided in the By-Laws of Holding Company, and if,
at or following the Effective Time, a vacancy shall exist in the Board of
Directors of Holding Company, such vacancy may be filled in the manner provided
in the By-Laws of Holding Company.
 
                                  ARTICLE III
 
                               STOCK CERTIFICATES
 
  Following the Effective Time, each holder of an outstanding certificate or
certificates theretofore representing shares of Edison Common Stock may, but
shall not be required, to surrender the same to Holding Company for
cancellation and exchange or transfer, and each such holder or transferee
thereof will be entitled to receive a certificate or certificates representing
the same number of shares of Holding Company Common Stock as the number of
shares of Edison Common Stock previously represented by the stock certificate
or certificates so surrendered. Until so surrendered for cancellation and
exchange or transfer, each outstanding certificate which, prior to the
Effective Time, represented shares of Edison Common Stock shall be deemed and
treated for all corporate purposes to represent the ownership of the same
number of shares of Holding Company Common Stock as though such surrender for
cancellation and exchange or transfer thereof had taken place.
 
                                      B-2
<PAGE>
 
                                   ARTICLE IV
 
                                 MISCELLANEOUS
 
  (a) This Agreement may be terminated and the transactions herein provided for
and the Merger abandoned at any time, whether before or after approval of the
Merger Agreement by the shareholders of Edison, by action of the Board of
Directors of Edison if said Board of Directors determines for any reason that
the consummation of the transactions herein provided for would for any reason
be inadvisable or not in the best interests of Edison or its shareholders.
 
  (b) The Merger Agreement shall not be amended by Edison and Merging Corp.
without the written consent of Holding Company.
 
  (c) This Agreement may be executed in counterparts, each of which when so
executed shall be deemed to be an original, and such counterparts shall
together constitute but one and the same instrument.
 
  (d) This Agreement shall be governed by, and construed in accordance with,
the laws of the State of Illinois.
 
  IN WITNESS WHEREOF, Edison, Holding Company and Merging Corp., pursuant to
approval and authorization duly given by resolutions adopted by their
respective Boards of Directors, have each caused this Supplemental Agreement to
be executed by its Chairman of the Board, its President or one of its Vice
Presidents and attested by its Secretary or one of its Assistant Secretaries.
 
                                          Commonwealth Edison Company
 
                                              /s/ James J. O'Connor
                                          By __________________________________
                                             James J. O'Connor
                                             Chairman
 
         /s/ David A. Scholz
Attest: _____________________________
        David A. Scholz
        Secretary
 
                                          CECo Holding Company
 
                                              /s/ James J. O'Connor
                                          By __________________________________
                                             James J. O'Connor
                                             Chairman
 
         /s/ David A. Scholz
Attest: _____________________________
        David A. Scholz
        Secretary
 
                                          CECo Merging Corporation
 
                                              /s/ James J. O'Connor
                                          By __________________________________
                                             James J. O'Connor
                                             Chairman
 
         /s/ David A. Scholz
Attest: _____________________________
        David A. Scholz
        Secretary
 
                                      B-3
<PAGE>
 
                                   EXHIBIT C
 
                              CECO HOLDING COMPANY
                           ARTICLES OF INCORPORATION
 
ARTICLE ONE   The name of the corporation is CECo Holding Company
 
ARTICLE TWO   The name and address of the registered agent and its registered
              office are:
 
              Registered Agent:
                             David A. Scholz
 
              Registered Office:
                             10 South Dearborn Street
                             Post Office Box 767
                             Chicago, Illinois 60690-0767
                             Cook County
 
ARTICLE THREE The purpose or purposes for which the corporation is organized
              are to transact any or all lawful businesses for which
              corporations may be incorporated under the Business Corporation
              Act of 1983, as amended from time to time.
 
ARTICLE FOUR  Paragraph 1. The number of shares which the corporation is
              authorized to issue is 400,000,000 shares of Common Stock,
              without par value.
 
              Paragraph 2. Initially, the corporation proposes to issue 100
              shares of Common Stock for an aggregate consideration of $1,000.
 
              Paragraph 3. The shares of Common Stock shall entitle the
              holders thereof to one vote for each share upon all matters upon
              which shareholders have the right to vote and to cumulative
              voting in all elections of directors by vote of shareholders.
 
ARTICLE FIVE  Paragraph 1. A director of the corporation shall not be
              personally liable to the corporation or its shareholders for
              monetary damages for breach of fiduciary duty as a director,
              except for liability (i) for any breach of the director's duty
              of loyalty to the corporation or its shareholders, (ii) for acts
              or omissions not in good faith or that involve intentional
              misconduct or a knowing violation of law, (iii) under Section
              8.65 of the Business Corporation Act of the State of Illinois,
              or (iv) for any transaction from which the director derived an
              improper personal benefit. If the Business Corporation Act of
              the State of Illinois is amended to authorize corporate action
              further eliminating or limiting the personal liability of
              Directors, then the liability of a director of the corporation
              shall be eliminated or limited to the full extent permitted by
              the Business Corporation Act of the State of Illinois, as so
              amended. Any repeal or modification of this Paragraph 1 by the
              shareholders of the corporation shall not adversely affect any
              right or protection of a director of the corporation existing at
              the time of such repeal or modification.
 
              Paragraph 2. Each person who is or was or had agreed to become a
              director or officer of the corporation, and each person who is
              or was serving or who had agreed to serve at the request of the
              Board of Directors or an officer of the corporation as an
              employe or agent of the corporation or as a director, officer,
              employe, or agent, trustee or fiduciary of another corporation,
              partnership, joint venture, trust or other enterprise (including
              the heirs, executors, administrators or estate of such person),
              shall be indemnified by the corporation to the full extent
              permitted by the Business Corporation Act of the State of
              Illinois or any other applicable laws as presently or hereafter
              in effect. Without limiting the generality of the foregoing, the
              corporation may enter into one or more agreements with any
              person which provide for indemnification greater or different
              than that provided in this Paragraph 2. Any repeal or
              modification of this Paragraph 2 shall not adversely affect any
              right or protection existing hereunder immediately prior to such
              repeal or modification.
 
ARTICLE SIX   The undersigned incorporator hereby declares, under penalties of
              perjury, that the statements made in the foregoing Articles of
              Incorporation are true.
 
                                      C-1
<PAGE>
 
                                   EXHIBIT D
 
              PROVISIONS OF THE ILLINOIS BUSINESS CORPORATION ACT
                 RELATING TO RIGHTS OF DISSENTING SHAREHOLDERS
 
SECTION 11.65. RIGHT TO DISSENT.
 
  (a) A shareholder of a corporation is entitled to dissent from, and obtain
payment for his or her shares in the event of any of the following corporate
actions:
 
    (1) consummation of a plan of merger or consolidation or a plan of share
  exchange to which the corporation is a party if
 
      (i) shareholder authorization is required for the merger or
    consolidation or the share exchange by Section 11.20 or the articles of
    incorporation or
 
      (ii) the corporation is a subsidiary that is merged with its parent
    or another subsidiary under Section 11.30;
 
    (2) consummation of sale, lease or exchange of all, or substantially all,
  of the property and assets of the corporation other than in the usual and
  regular course of business;
 
    (3) an amendment of the articles of incorporation that materially and
  adversely affects rights in respect of a dissenter's shares because it:
 
      (i) alters or abolishes a preferential right of such shares;
 
      (ii) alters or abolishes a right in respect of redemption, including
    a provision respecting a sinking fund for the redemption or repurchase,
    of such shares;
 
      (iii) in the case of a corporation incorporated prior to January 1,
    1982, limits or eliminates cumulative voting rights with respect to
    such shares; or
 
    (4) any other corporate action taken pursuant to a shareholder vote if
  the articles of incorporation, by-laws, or a resolution of the board of
  Directors provide that shareholders are entitled to dissent and obtain
  payment for their shares in accordance with the procedures set forth in
  Section 11.70 or as may be otherwise provided in the articles, by-laws or
  resolution.
 
  (b) A shareholder entitled to dissent and obtain payment for his or her
shares under this Section may not challenge the corporate action creating his
or her entitlement unless the action is fraudulent with respect to the
shareholder or the corporation or constitutes a breach of a fiduciary duty owed
to the shareholder.
 
  (c) A record owner of shares may assert dissenters' rights as to fewer than
all the shares recorded in such person's name only if such person dissents with
respect to all shares beneficially owned by any one person and notifies the
corporation in writing of the name and address of each person on whose behalf
the record owner asserts dissenters' rights. The rights of a partial dissenter
are determined as if the shares as to which dissent is made and the other
shares were recorded in the names of different shareholders. A beneficial owner
of shares who is not the record owner may assert dissenters' rights as to
shares held on such person's behalf only if the beneficial owner submits to the
corporation the record owner's written consent to the dissent before or at the
same time the beneficial owner asserts dissenters' rights. Amended by P.A. 85-
1269, eff. Jan. 1, 1989.
 
SECTION 11.70. PROCEDURE TO DISSENT.
 
  (a) If the corporate action giving rise to the right to dissent is to be
approved at a meeting of shareholders, the notice of meeting shall inform the
shareholders of their right to dissent and the procedure to dissent. If, prior
to the meeting, the corporation furnishes to the shareholders material
information with respect to the transaction that will objectively enable a
shareholder to vote on the transaction and to determine whether or not to
exercise dissenters' rights, a shareholder may assert
 
                                      D-1
<PAGE>
 
dissenters' rights only if the shareholder delivers to the corporation before
the vote is taken a written demand for payment for his or her shares if the
proposed action is consummated, and the shareholder does not vote in favor of
the proposed action.
 
  (b) If the corporate action giving rise to the right to dissent is not to be
approved at a meeting of shareholders, the notice to shareholders describing
the action taken under Section 11.30 or Section 7.10 shall inform the
shareholders of their right to dissent and the procedure to dissent. If, prior
to or concurrently with the notice, the corporation furnishes to the
shareholders material information with respect to the transaction that will
objectively enable a shareholder to determine whether or not to exercise
dissenters' rights, a shareholder may assert dissenter's rights only if he or
she delivers to the corporation within 30 days from the date of mailing the
notice a written demand for payment for his or her shares.
 
  (c) Within 10 days after the date on which the corporate action giving rise
to the right to dissent is effective or 30 days after the shareholder delivers
to the corporation the written demand for payment, whichever is later, the
corporation shall send each shareholder who has delivered a written demand for
payment a statement setting forth the opinion of the corporation as to the
estimated fair value of the shares, the corporation's latest balance sheet as
of the end of a fiscal year ending not earlier than 16 months before the
delivery of the statement, together with the statement of income for that year
and the latest available interim financial statements, and either a commitment
to pay for the shares of the dissenting shareholder at the estimated fair value
thereof upon transmittal to the corporation of the certificate or certificates,
or other evidence of ownership, with respect to the shares, or instructions to
the dissenting shareholder to sell his or her shares within 10 days after
delivery of the corporation's statement to the shareholder. The corporation may
instruct the shareholder to sell only if there is a public market for the
shares at which the shares may be readily sold. If the shareholder does not
sell within that 10 day period after being so instructed by the corporation,
for purposes of this Section the shareholder shall be deemed to have sold his
or her shares at the average closing price of the shares, if listed on a
national exchange, or the average of the bid and asked price with respect to
the shares quoted by a principal market maker, if not listed on a national
exchange, during that 10 day period.
 
  (d) A shareholder who makes written demand for payment under this Section
retains all other rights of a shareholder until those rights are cancelled or
modified by the consummation of the proposed corporate action. Upon
consummation of that action, the corporation shall pay to each dissenter who
transmits to the corporation the certificate or other evidence of ownership of
the shares the amount the corporation estimates to be the fair value of the
shares, plus accrued interest, accompanied by a written explanation of how the
interest was calculated.
 
  (e) If the shareholder does not agree with the opinion of the corporation as
to the estimated fair value of the shares or the amount of interest due, the
shareholder, within 30 days from the delivery of the corporation's statement of
value, shall notify the corporation in writing of the shareholder's estimated
fair value and amount of interest due and demand payment for the difference
between the shareholder's estimate of fair value and interest due and the
amount of the payment by the corporation or the proceeds of sale by the
shareholder, whichever is applicable because of the procedure for which the
corporation opted pursuant to subsection (c).
 
  (f) If, within 60 days from delivery to the corporation of the shareholder
notification of estimate of fair value of the shares and interest due, the
corporation and the dissenting shareholder have not agreed in writing upon the
fair value of the shares and interest due, the corporation shall either pay the
difference in value demanded by the shareholder, with interest, or file a
petition in the circuit court of the county in which either the registered
office or the principal office of the corporation is located, requesting the
court to determine the fair value of the shares and interest due. The
corporation shall make all dissenters, whether or not residents of this State,
whose demands remain unsettled parties to the proceeding as an action against
their shares and all parties shall be served with a copy of the
 
                                      D-2
<PAGE>
 
petition. Nonresidents may be served by registered or certified mail or by
publication as provided by law. Failure of the corporation to commence an
action pursuant to this Section shall not limit or affect the right of the
dissenting shareholders to otherwise commence an action as permitted by law.
 
  (g) The jurisdiction of the court in which the proceeding is commenced under
subsection (f) by a corporation is plenary and exclusive. The court may appoint
one or more persons as appraisers to receive evidence and recommend decision of
the question of fair value. The appraisers have the power described in the
order appointing them, or in any amendment to it.
 
  (h) Each dissenter made a party to the proceeding is entitled to judgment for
the amount, if any, by which the court finds that the fair value of his or her
shares, plus interest, exceeds the amount paid by the corporation or the
proceeds of sale by the shareholder, whichever amount is applicable.
 
  (i) The court, in a proceeding commenced under subsection (f), shall
determine all costs of the proceeding, including the reasonable compensation
and expenses of the appraisers, if any, appointed by the court under subsection
(g), but shall exclude the fees and expenses of counsel and experts for the
respective parties. If the fair value of the shares as determined by the court
materially exceeds the amount which the corporation estimated to be the fair
value of the shares or if no estimate was made in accordance with subsection
(c), then all or any part of the costs may be assessed against the corporation.
If the amount which any dissenter estimated to be the fair value of the shares
materially exceeds the fair value of the shares as determined by the court,
then all or any part of the costs may be assessed against that dissenter. The
court may also assess the fees and expenses of counsel and experts for the
respective parties, in amounts the court finds equitable, as follows:
 
    (1) Against the corporation and in favor of any or all dissenters if the
  court finds that the corporation did not substantially comply with the
  requirements of subsections (a), (b), (c), (d), or (f).
 
    (2) Against either the corporation or a dissenter and in favor of any
  other party if the court finds that the party against whom the fees and
  expenses are assessed acted arbitrarily, vexatiously, or not in good faith
  with respect to the rights provided by this Section.
 
  If the court finds that the services of counsel for any dissenter were of
substantial benefit to other dissenters similarly situated and that the fees
for those services should not be assessed against the corporation, the court
may award to that counsel reasonable fees to be paid out of the amounts awarded
to the dissenters who are benefited. Except as otherwise provided in this
Section, the practice, procedure, judgment and costs shall be governed by the
Code of Civil Procedure.
 
  (j) As used in this Section:
 
    (1) "Fair Value", with respect to a dissenter's shares, means the value
  of the shares immediately before the consummation of the corporation action
  to which the dissenter objects excluding any appreciation or depreciation
  in anticipation of the corporate action, unless exclusion would be
  inequitable.
 
    (2) "Interest" means interest from the effective date of the corporate
  action until the date of payment, at the average rate currently paid by the
  corporation on its principal bank loans or, if none, at a rate that is fair
  and equitable under all the circumstances.
 
                                      D-3
<PAGE>
 
                PART II. INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Certain provisions of the Illinois Business Corporation Act of 1983, as
amended, provide that the Registrant may, and in some circumstances must,
indemnify the Directors and officers of the Registrant and of each subsidiary
company against liabilities and expenses incurred by such person by reason of
the fact that such person was serving in such capacity, subject to certain
limitations and conditions set forth in the statute. The Registrant's Articles
of Incorporation and By-Laws provide that the Registrant will indemnify its
Directors and officers, and may indemnify any person serving as director or
officer of another business entity at the Registrant's request, to the extent
permitted by the statute.
 
  The Registrant maintains liability insurance policies which indemnify the
Registrant's Directors and officers, the Directors and officers of subsidiaries
of the Registrant, and the trustees of the Service Annuity Funds, against loss
arising from claims by reason of their legal liability for acts as such
Directors, officers or trustees, subject to limitations and conditions as set
forth in the policies. Among other limitations, the primary policy states that
no coverage is provided for loss representing "amounts which are deemed
uninsurable under the law pursuant to which this policy shall be construed".
 
  The Registrant indemnifies assistant officers and certain other employes
against liabilities and expenses incurred by reason of acts performed in
connection with the operations of the various employe benefit systems of the
Registrant and its subsidiaries.
 
ITEM 21. EXHIBITS.
 
  The following exhibits are filed herewith or incorporated herein by
reference.
 
<TABLE>
<CAPTION>
      EXHIBIT
      NUMBER                    DESCRIPTION OF DOCUMENT
      -------                   -----------------------
     <C>       <S>                                                           
      2(a)     Agreement and Plan of Merger (attached as Exhibit A).
      2(b)     Supplemental Agreement (attached as Exhibit B).
      3(a)     Articles of Incorporation of CECo Holding Company (at-
                tached as Exhibit C).
      3(b)     By-Laws of CECo Holding Company.
      4        Rights of CECo Holding Company Common Shareholders (in-
                cluded in 3(a)).
      5        Opinion of Sidley & Austin.
      8        Opinion of Sidley & Austin.
     23(a)     Consent of Sidley & Austin (included in (5)).
     23(b)     Consent of Experts.
     99(a)     Form of Proxy/Direction.
     99(b)     Consents of Persons to be Directors of CECo Holding Com-
                pany at the Effective Time of the Merger.
</TABLE>
 
ITEM 22. UNDERTAKINGS.
 
  The undersigned registrant hereby undertakes:
 
    (1) That, for purposes of determining any liability under the Securities
  Act of 1933, each filing of the registrant's annual report pursuant to
  section 13(a) or section 15(d) of the Securities Exchange Act of 1934 that
  is incorporated by reference in the registration statement shall be deemed
  to be a new registration statement relating to the securities offered
  therein, and the offering of such securities at that time shall be deemed
  to be the initial bona fide offering thereof.
 
                                      II-1
<PAGE>
 
    (2) To respond to requests for information that is incorporated by
  reference into the prospectus pursuant to Items 4, 10(b), 11 or 13 of this
  form, within one business day of receipt of such request, and to send the
  incorporated documents by first class mail or other equally prompt means.
  This includes information contained in documents filed subsequent to the
  effective date of the registration statement through the date of responding
  to the request.
 
    (3) To supply by means of a post-effective amendment all information
  concerning a transaction, and the company being acquired involved therein,
  that was not the subject of and included in the registration statement when
  it became effective.
 
    (4) To remove from registration by means of a post-effective amendment
  any shares of Holding Company Common Stock which are not issued in the
  Merger, except shares which are issuable thereafter upon the conversion of
  Commonwealth Edison Company $1.425 Convertible Preferred Stock and
  Warrants.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to Directors, officers and controlling persons of the
registrant pursuant to the provisions described in Item 20, or otherwise, the
registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
 
                                      II-2
<PAGE>
 
                                   SIGNATURES
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT
HAS DULY CAUSED THIS REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE
UNDERSIGNED, THEREUNTO DULY AUTHORIZED, IN THE CITY OF CHICAGO, STATE OF
ILLINOIS ON JANUARY 31, 1994.
 
                                          CECo HOLDING COMPANY
 
                                                 /s/ James J. O'Connor
                                          By: _________________________________
                                                     James J. O'Connor
                                                         Chairman
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS REGISTRATION
STATEMENT HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS IN THE CAPACITIES
INDICATED, ON JANUARY 31, 1994.
 
SIGNATURE AND TITLE
 
 
      /s/ James J. O'Connor                     /s/ Samuel K. Skinner
- -------------------------------------     -------------------------------------
          James J. O'Connor                         Samuel K. Skinner
        Chairman and Director                    President and Director
    (principal executive officer)
 
       /s/ John C. Bukovski                      /s/ Roger F. Kovack
- -------------------------------------     -------------------------------------
          John C. Bukovski                           Roger F. Kovack
           Vice President                              Comptroller
    (principal financial officer)            (principal accounting officer)
 
                                      II-3
<PAGE>
 
                                 EXHIBIT INDEX
 
  The following exhibits are filed herewith or incorporated herein by
reference.
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                        DESCRIPTION OF DOCUMENT
     ------- ------------------------------------------------------------------
     <C>     <S>
      2(a)   Agreement and Plan of Merger (attached as Exhibit A).
      2(b)   Supplemental Agreement (attached as Exhibit B).
             Articles of Incorporation of CECo Holding Company (attached as
      3(a)    Exhibit C).
      3(b)   By-Laws of CECo Holding Company.
      4      Rights of CECo Holding Company Common Shareholders (included in
              3(a)).
      5      Opinion of Sidley & Austin.
      8      Opinion of Sidley & Austin.
     23(a)   Consent of Sidley & Austin (included in (5)).
     23(b)   Consent of Experts.
     99(a)   Form of Proxy/Direction.
     99(b)   Consents of Persons to be Directors of CECo Holding Company at the
              Effective Time of the Merger.
</TABLE>
 
<PAGE>

                             GRAPHICS APPENDIX LIST


    PHOTOS OF THE DIRECTORS AND NOMINEES FOR DIRECTORS APPEAR TO THE LEFT 
    OF EACH RESPECTIVE NAME ON PAGES 12, 13 AND 14.


<PAGE>



                                                            Exhibit 3(b)
                                                            CECo Holding Company
                                                            Form S-4
                                                            File No. 33-



                              CECO HOLDING COMPANY

                                    BY-LAWS


                           EFFECTIVE JANUARY 28, 1994


<PAGE>


                                    CONTENTS
<TABLE>
<CAPTION>
 
                                                             Page
                                                            Number
                                                            ------
<S>              <C>                                          <C>
 
ARTICLE I.       Stock......................................   1
 
ARTICLE II.      Meetings of Shareholders...................   3
 
ARTICLE III.     Board of Directors.........................   5
 
ARTICLE IV.      Committees of the Board of Directors.......   7
 
ARTICLE V.       Officers...................................  10
 
ARTICLE VI.      Indemnification............................  13
 
ARTICLE VII.     Miscellaneous..............................  14
 
ARTICLE VIII.    Alteration, Amendment or Repeal of By-Laws.  15
</TABLE>

<PAGE>


                              CECO HOLDING COMPANY

                                    BY-LAWS
                                     _____

                                   ARTICLE I.

                                     STOCK.


     SECTION 1.  Each holder of fully paid stock shall be entitled to a
certificate or certificates of stock stating the number and class of shares, and
the designation of the series, if any, which such certificate represents.  All
certificates of stock shall at the time of their issuance be signed either
manually or by facsimile signature by the Chairman, the President or a Vice
President and by the Secretary or an Assistant Secretary.  All certificates of
stock shall be sealed with the seal of the Company or a facsimile of such seal,
shall be countersigned either manually or by facsimile signature by a Transfer
Agent and shall be authenticated by manual signature and registered by a
Registrar.  The Board of Directors shall appoint one or more Transfer Agents,
none of whom shall be officers of the Company authorized to sign certificates of
stock, and one or more Registrars, each of which Registrars shall be a bank or
trust company.  Certificates of stock shall not be valid until countersigned by
a Transfer Agent and authenticated and registered by a Registrar in the manner
provided by the Board of Directors.

     SECTION 2.  Shares of stock shall be transferable only on the books of the
Company and, except as hereinafter provided or as otherwise required by law,
shall be transferred only upon proper endorsement and surrender of the
certificates issued therefor.  If an outstanding certificate of stock shall be
lost, destroyed or stolen, the holder thereof may have a new certificate upon
producing evidence satisfactory to the Board of Directors of such loss,
destruction or theft, and upon furnishing to the Company, the Transfer Agents
and the Registrars a bond of indemnity deemed sufficient by the Board of
Directors against claims under the outstanding certificate.

     SECTION 3.  The certificates for each class or series of stock shall be
numbered and issued in consecutive order and a record shall be kept of the name
and address of the person to whom each certificate is issued, the number of
shares represented by the certificate and the number and date of the
certificate.  All certificates exchanged or returned to the Company or the
Transfer Agent for transfer shall be canceled and filed.

                                      -1-

<PAGE>

     SECTION 4.  For the purpose of determining shareholders entitled to notice
of or to vote at any meeting of shareholders, or shareholders entitled to
receive payment of any dividend, or in order to make a determination of
shareholders for any other proper purpose, the Board of Directors may fix in
advance a date as the record date for any such determination of shareholders,
such date in any case to be not more than sixty days and, for a meeting of
shareholders, not less than ten days, or in the case of a merger, consolidation,
share exchange, dissolution or sale, lease or exchange of assets, not less than
twenty days, immediately preceding such meeting.

     SECTION 5.  If any subscription for stock in the Company or any installment
of such subscription shall be unpaid when due, as the Board of Directors shall
have determined the time for payment, and shall continue unpaid for twenty days
after demand for the amount due, made either in person or by written notice duly
mailed to the last address, as it appears on the records of the Company, of the
subscriber or other person by whom the subscription or installment shall be
payable, the stock or subscription upon which payment shall be so due shall,
upon the expiration of said twenty days, become and be forfeited to the Company
without further action, demand or notice, and such stock or subscription may be
sold at public sale, subject to payment of the amount due and unpaid, plus all
costs and expenses incurred by the Company in that connection, at a time and
place to be stated in a written notice to be mailed to the recorded address of
the delinquent subscriber or other person in default on the subscription at
least ten days prior to the time fixed for such sale; provided, that the excess
of proceeds of such sale realized over the amount due and unpaid on said stock
or subscription shall be paid to the delinquent subscriber of other person in
default on the subscription, or to his or her legal representative; and,
provided further, that no forfeiture of stock, or of any amounts paid upon a
subscription therefor, shall be declared as against the estate of any decedent
before distribution shall have been made of the estate.

     The foregoing provisions for the forfeiture and sale of stock or
subscriptions shall not exclude any other remedy which may lawfully be
enforceable at any time, by forfeiture of stock or of amounts theretofore paid
or otherwise, against any person for nonpayment of a subscription or of any
installment thereof.

     SECTION 6.  Transfers of shares shall be made only on the books of the
Company by the registered holder thereof or by his or her legal representative,
who shall furnish proper evidence of authority to transfer, or by his or her
attorney or successor thereunto authorized by power of attorney or by documents
duly executed and filed with the Secretary or Transfer Agent of the Company, and
upon surrender for cancellation of the certificate for such shares.  The person
in whose name shares stand on the

                                      -2-

<PAGE>

books of the Company shall be deemed the owner thereof for all purposes as
regards the Company.

     SECTION 7.  The Company shall be entitled to treat the holder of record of
any share or shares of stock as the holder in fact thereof and accordingly,
shall not be bound to recognize any equitable or other claim to or interest in
such share or shares on the part of any other person, whether or not it shall
have express or other notice thereof, except as otherwise provided by the laws
of the State of Illinois.


                                  ARTICLE II.

                           MEETINGS OF SHAREHOLDERS.

     SECTION 1.  The regular annual meeting of the shareholders of the Company
for the election of Directors and for the transaction of such other business as
may come before the meeting shall be held on such day in April or May of each
year as the Board of Directors may by resolution determine.  Each such regular
annual meeting and each special meeting of the shareholders shall be held at
such place as may be fixed by the Board of Directors and at such hour as the
Board of Directors shall order.

     SECTION 2.  Special meetings of the shareholders may be called by the
Chairman, by the Board of Directors, by a majority of the Directors individually
or by the holders of not less than one-fifth of the total outstanding shares of
capital stock of the Company.

     SECTION 3.  Written notice stating the place, day and hour of the meeting
of the shareholders and, in the case of a special meeting, the purpose or
purposes for which the meeting is called shall be delivered not less than ten
nor more than sixty days before the date of the meeting, or in the case of a
merger, consolidation, share exchange, dissolution or sale, lease or exchange of
assets not less than twenty nor more than sixty days before the date of the
meeting, either personally or by mail, by or at the direction of the Chairman,
the Secretary or the persons calling the meeting, to each shareholder of record
entitled to vote at such meeting.  If mailed, such notice shall be deemed to be
delivered when deposited in the United States mail addressed to the shareholder
at the shareholder's address as it appears upon the records of the Company, with
postage thereon prepaid.

     SECTION 4.  At all meetings of the shareholders, a majority of the
outstanding shares of stock, entitled to vote on a matter, represented in person
or by proxy, shall constitute a quorum for consideration of such matter, but the
shareholders represented at any meeting, though less than a quorum, may adjourn
the meeting to some other day or sine die.  If a quorum is present, the

                                      -3-

<PAGE>

affirmative vote of the majority of the shares of stock represented at the
meeting and entitled to vote on a matter shall be the act of the shareholders,
unless the vote of a greater number or voting by classes is required by law or
the articles of incorporation.

     SECTION 5.  At every meeting of the shareholders, each outstanding share of
stock shall be entitled to one vote on each matter submitted for a vote.  In all
elections for Directors, every shareholder shall have 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.  A shareholder may vote either in
person or by proxy.  A shareholder may appoint a proxy to vote or otherwise act
for him or her by signing an appointment form and delivering it to the person so
appointed.

     SECTION 6.  Any meeting at which a quorum of shareholders is present, in
person or by proxy, may adjourn from time to time without notice, other than
announcement at such meeting, until its business is completed.  At the adjourned
meeting, the Company may transact any business which might have been transacted
at the original meeting.  If the adjournment is for more than thirty days, a
notice of the adjourned meeting shall be given to each shareholder of record
entitled to vote at the meeting.

     SECTION 7.  The Secretary of the Company shall make or cause to be made,
within twenty days after the record date for a meeting of shareholders of the
Company or ten days before such meeting, whichever is earlier, a complete list
of the shareholders entitled to vote at such meeting, arranged in alphabetical
order, with the address of and the number of shares held by each, which list,
for at least ten days prior to such meeting, shall be kept on file at the
registered office of the Company and shall be subject to inspection by any
shareholder, and to copying at such shareholder's expense, at any time during
usual business hours.  Such list shall also be produced and kept open at the
time and place of the meeting and shall be subject to the inspection of any
shareholder during the whole time of the meeting.

     SECTION 8.  The Chairman and the Secretary of the Company shall, when
present, act as chairman and secretary, respectively, of each meeting of the
shareholders.

     SECTION 9.  At any meeting of shareholders, the chairman of the meeting
may, or upon the request of any shareholder shall, appoint one or more persons
as inspectors for such meeting, unless an inspector or inspectors shall have
been previously appointed for such meeting by the Chairman.  Such inspectors

                                      -4-

<PAGE>

shall ascertain and report the number of shares of stock represented at the
meeting, based upon their determination of the validity and effect of proxies,
count all votes and report the results and do such other acts as are proper to
conduct the election and voting with impartiality and fairness to all the
shareholders.

     SECTION 10.  Voting on any question or in any election may be viva voce
unless the presiding officer shall order or any shareholder shall demand that
voting be by ballot.


                                  ARTICLE III.

                              BOARD OF DIRECTORS.

     SECTION 1.  The business and affairs of the Company shall be managed by or
under the direction of the Board of Directors.  The number of Directors of the
Company shall be not less than eleven nor more than sixteen.  The Directors
shall be elected at each annual meeting of the shareholders, but if for any
reason the election shall not be held at an annual meeting, it may be
subsequently held at any special meeting of the shareholders called for that
purpose after proper notice.  The Directors so elected shall hold office until
the next annual meeting and until their respective successors, willing to serve,
shall have been elected and qualified.  Directors need not be residents of the
State of Illinois or shareholders of the Company.  No person shall be eligible
for nomination or renomination as a Director by the management of the Company
who, prior to the date of election, shall have attained age seventy.  No person
who is an employe or a former employe of the Company or of a subsidiary of the
Company shall be eligible for nomination or renomination as a Director by the
management of the Company for a term commencing after such person ceases to be
such an employe; provided, however, that any Director of the Company who was a
Director of Commonwealth Edison Company, an Illinois corporation, in office on
June 15, 1989 who is or has been such an employe may be renominated as a
Director unless such person shall have attained age sixty-five on or before the
date of election of Directors.

     SECTION 2.  Any vacancy occurring in the Board of Directors, including a
vacancy created by an increase in the number of directors, may be filled by
election at an annual meeting or at a special meeting of shareholders called for
that purpose; provided, however, that any vacancy in the Board of Directors
arising between meetings of shareholders by reason of an increase in the number
of directors or otherwise may be filled by the vote of a majority of the
directors then in office, although less than a quorum.  Any directors so elected
shall serve until the next annual meeting of shareholders.

                                      -5-

<PAGE>

     SECTION 3.  A meeting of the Board of Directors shall be held immediately,
or as soon as practicable, after the annual election of Directors in each year,
provided a quorum for such meeting can be obtained.  Notice of every meeting of
the Board, stating the time and place at which such meeting will be held, shall
be given to each Director personally, by telephone or by other means of
communication at least one day, or by depositing the same in the mails properly
addressed at least two days before the day of such meeting.  A meeting of the
Board of Directors may be called at any time by the Chairman or by any two
Directors and shall be held at such place as shall be specified in the notice
for such meeting.

     SECTION 4.  A majority of the number of Directors then in office, but not
less than six, shall constitute a quorum for the transaction of business at any
meeting of the Board, but a lesser number may adjourn the meeting from time to
time until a quorum is obtained, or may adjourn sine die.  The act of the
majority of the Directors present at a meeting at which a quorum is present
shall be the act of the Board of Directors.

     SECTION 5.  Each member of the Board not receiving a salary from the
Company or a subsidiary of the Company shall be paid such fees as the Board of
Directors may from time to time, by resolution adopted by the affirmative vote
of a majority of the Directors then in office, and irrespective of any personal
interest of any of its members, determine.  The Directors shall be paid their
reasonable expenses, if any, of attendance at each meeting of the Board of
Directors.  Members of any committee of the Board of Directors may be allowed
like fees and expenses for service on or attendance at meetings of such
committee.  No such payment shall preclude any Director from serving the Company
in any other capacity and receiving compensation therefor.

     SECTION 6.  A Director of the Company who is present at a meeting of the
Board of Directors at which action is taken on any corporate matter shall be
conclusively presumed to have assented to the action taken unless his or her
dissent shall be entered in the minutes of the meeting or unless he shall file
his or her written dissent to such action with the person acting as Secretary
of the meeting before the adjournment thereof or shall forward such dissent by
registered mail to the Secretary of the Company immediately after the
adjournment of the meeting.  Such right to dissent shall not apply to a director
who voted in favor of such action.


                                      -6-
<PAGE>

                                  ARTICLE IV.

                      COMMITTEES OF THE BOARD OF DIRECTORS

     SECTION 1.  There shall be an Executive Committee of the Board consisting
of five members.  The Board of Directors shall, at its first meeting after the
annual meeting of the shareholders in each year, elect a chairman and the four
other members of the Executive Committee.  The remaining Directors shall
constitute alternates to serve temporarily, and as far as practicable in
rotation (in such order as shall be established by the Board), in the place of
any member who may be unable to serve.  The Chairman or the Directors calling a
meeting of the Executive Committee shall call upon alternates, in rotation, to
serve as herein provided.  When any alternate serves, the minutes of the meeting
shall record the name of the member in whose place such alternate serves.  The
Directors elected as members of the Executive Committee shall serve as such for
one year and until their respective successors, willing to serve, shall have
been elected.  The Executive Committee shall, when the Board is not in session,
have and may exercise all of the authority of the Board of Directors, subject to
the limitations set forth in Section 10 of this Article IV.  Vacancies in the
membership of the Executive Committee shall be filled by the Board of Directors.
The Executive Committee shall keep minutes of the proceedings at its meetings.

     SECTION 2.  There shall be an Audit Committee of the Board consisting of
not less than three nor more than five members who are not employes of the
Company.  The Directors elected as members of the Audit Committee shall serve as
such for three years and until their respective successors, willing to serve,
shall have been elected, provided that, to the extent practicable, the members
of the Audit Committee shall be elected for staggered terms.  The Board of
Directors shall, at its first meeting after the annual meeting of shareholders
in each year, elect the successors of the members whose terms shall then expire.
The Board of Directors shall designate from time to time the member who is to
serve as chairman of the Audit Committee.  The Audit Committee shall meet with
the Company's independent auditors at least once each year to review the
Company's financial statements and the scope and results of such auditors'
examinations, monitor the internal accounting controls and practices of the
Company, review the annual report to shareholders and make recommendations as
to its approval to the Board and recommend, subject to shareholder approval, the
appointment of independent auditors, and shall report its findings at least once
each year to the Board.  The Audit Committee shall have such powers as it shall
deem necessary for the performance of its duties.  Vacancies in the membership
of the Audit Committee shall

                                      -7-
<PAGE>

be filled by the Board of Directors.  The Audit Committee shall keep minutes of
the proceedings at its meetings.

     SECTION 3.  There shall be a Compensation Committee of the Board consisting
of those Directors who are not employes or former employes of the Company.  The
Board of Directors shall, at its first meeting after the annual meeting of
shareholders in each year, elect a chairman of the Compensation Committee.  The
Directors serving as members of the Compensation Committee shall serve as such
for one year and until their respective successors, willing to serve, shall have
been elected.  The Compensation Committee shall administer awards under the
Company's Deferred Compensation Plan.  The Compensation Committee shall have
such power as it shall deem necessary for the performance of its duties.
Vacancies in the membership of the Compensation Committee shall be filled by
the Board of Directors.  The Compensation Committee shall keep minutes of the
proceedings at its meetings.

     SECTION 4.  There shall be a Finance Committee of the Board consisting of
not less than three nor more than five members.  The Board of Directors shall,
at its first meeting after the annual meeting of shareholders in each year,
elect a chairman and the other members of the Finance Committee.  The Directors
elected as members of the Finance Committee shall serve as such for one year and
until their respective successors, willing to serve, shall have been elected.
The Finance Committee shall review the scope and results of the Company's
financing program and review the Company's financial statements, construction
budgets and cash budgets as they relate to the Company's financing program, and
shall report its findings at least once each year to the Board.  The Finance
Committee shall have such power as it shall deem necessary for the performance
of its duties.  Vacancies in the membership of the Finance Committee shall be
filled by the Board of Directors.  The Finance Committee shall keep minutes of
the proceedings at its meetings.

     SECTION 5.  There shall be a Nominating Committee of the Board consisting
of not less than three nor more than five members, a majority of whom are not
employes of the Company.  The Board of Directors shall, at its first meeting
after the annual meeting of shareholders in each year, elect a chairman and the
other members of the Nominating Committee.  The Directors elected as members of
the Nominating Committee shall serve as such for one year and until their
respective successors, willing to serve, shall have been elected.  The
Nominating Committee shall review the requirements for serving as Director,
review potential candidates for Director, propose nominees for Director to the
Board and recommend to the Board the successor to the Chairman when a vacancy
occurs in that position.  The Nominating Committee shall have such power as it
shall deem necessary for the performance of its duties.  Vacancies in the
membership of the Nominating Committee shall be filled by the Board of
Directors.  The

                                      -8-

<PAGE>

Nominating Committee shall keep minutes of the proceedings at its meetings.

     SECTION 6.  The Board of Directors may from time to time create other
committees, standing or special, appoint Directors to serve on such committees
and confer such powers upon such committees and revoke such powers and terminate
the existence of such committees, as the Board at its pleasure may determine,
subject to the limitations set forth in Section 8.40(c) of the Illinois Business
Corporation Act of 1983, as amended from time to time.

     SECTION 7.  Meetings of any committee of the Board may be called at any
time by the Chairman, by any two Directors or by the chairman of the committee
the meeting of which is being called and shall be held at such place as shall be
designated in the notice of such meeting.  Notice of each committee meeting
stating the time and place at which such meeting will be held shall be given to
each member of the committee personally, or by telegraph, or by depositing the
same in the mails properly addressed, at least one day before the day of such
meeting.  A majority of the members of a committee shall constitute a quorum
thereof but a lesser number may adjourn the meeting from time to time until a
quorum is obtained, or may adjourn sine die.  A majority vote of the members of
a committee present at a meeting at which a quorum is present shall be necessary
for committee action.

     SECTION 8.  The Board of Directors may from time to time designate from
among the Directors alternates to serve on one or more committees as occasion
may require.  Whenever a quorum cannot be secured for any meeting of any
committee from among the regular members thereof and designated alternates, the
member or members of such committee present at such meeting and not dis-
qualified from voting thereat, whether or not he or they constitute a quorum,
may unanimously appoint another member of the Board of Directors to act at the
meeting in place of such absent or disqualified member.

     SECTION 9.  Every Director of the Company, or member of any committee
designated by the Board of Directors pursuant to authority conferred by these
By-Laws, shall, in the performance of his or her duties, be fully protected in
relying in good faith upon the records of the Company and upon such information,
opinions, reports or statements presented to the Company by any of the Company's
officers or employees, or committees of the Board of Directors, or by any other
person as to matters the Director or member reasonably believes are within such
other person's professional or expert competence and who has been selected with
reasonable care by or on behalf of the Company.


                                      -9-
<PAGE>

                                  ARTICLE V.

                                   OFFICERS.

     SECTION 1.  There shall be elected by the Board of Directors, at its first
meeting after the annual election of Directors in each year if practicable, the
following principal officers of the Company, namely: a Chairman, a President,
such number of Executive Vice Presidents, Senior Vice Presidents and Vice
Presidents as the Board at the time may decide upon, a Secretary, a Treasurer
and a Comptroller; and the Board may also provide for a Vice Chairman and such
other officers, and prescribe for each of them such duties, as in its judgment
may from time to time be desirable to conduct the affairs of the Company.  No
officer shall be elected for a term extending beyond the first day of the month
following the month in which such officer attains the age of 65 years, on which
date such officer shall be retired.  The Chairman shall be a Director of the
Company; any other officer above named may, but need not, be a Director of the
Company.  Any two or more offices may be held by the same person.  All officers
shall hold their respective offices until the first meeting of the Board of
Directors after the next succeeding annual election of Directors and until their
successors, willing to serve, shall have been elected, but any officer may be
removed from office by the Board of Directors whenever in its judgment the best
interests of the Company will be served thereby.  Such removal, however, shall
be without prejudice to the contract rights, if any, of the person so removed. 
Election of an officer shall not of itself create contract rights.

     SECTION 2.  The Chairman shall be the chief executive officer of the
Company and shall have general authority over all the affairs of the Company,
including the power to appoint and discharge any and all officers, agents and
employes of the Company not elected or appointed directly by the Board of Direc-
tors.  The Chairman shall, when present, preside at all meetings of the
shareholders and of the Board of Directors.  The Chairman shall have authority
to call special meetings of the shareholders and meetings of the Board of
Directors, and of any committee of the Board of Directors and, when neither the
Board of Directors nor the Executive Committee is in session, to suspend the
authority of any other officer or officers of the Company, subject, however, to
the pleasure of the Board of Directors or of the Executive Committee at its next
meeting.  The Chairman, or such other officer as the Chairman may direct, shall
be responsible for all internal audit functions, and the internal audit person-
nel shall report directly to the Chairman or to such other officer.

     SECTION 3.  In the absence or disability of the Chairman, the powers and
duties of the Chairman shall be performed by the


                                     -10-
<PAGE>

President or, in the President's absence or disability, by such other principal
officer as the Board of Directors or the Executive Committee may designate.

     SECTION 4.  Except insofar as the Board of Directors, the Executive
Committee or the Chairman shall have devolved responsibilities on the other
principal officers, the President shall be responsible for the general
management and direction of the affairs of the Company, subject to the control
of the Board of Directors, the Executive Committee and the Chairman.  The Presi-
dent shall have such other powers and duties as usually devolve upon the
President of a corporation and such further powers and duties as may be
prescribed by the Board of Directors, the Executive Committee or the chairman.
The President shall report to the Chairman.

     SECTION 5.  The Executive Vice Presidents, the Senior Vice Presidents and
the Vice Presidents shall have such powers and duties as may be prescribed for
them, respectively, by the Board of Directors, the Executive committee or the
Chairman.  Each of such officers shall report to the Chairman or such other
officer as the Chairman shall direct.

     SECTION 6.  The Secretary shall attend all meetings of the shareholders, of
the Board of Directors and of each committee of the Board of Directors, shall
keep a true and faithful record thereof in proper books and shall have the
custody and care of the corporate seal, records, minute books and stock books of
the Company and of such other books and papers as in the practical business
operations of the Company shall naturally belong in the office or custody of the
Secretary or as shall be placed in the Secretary's custody by order of the Board
of Directors or the Executive Committee.  The Secretary shall keep or cause to
be kept a suitable record of the addresses of shareholders and shall, except as
may be otherwise required by statute or the by-laws, sign and issue all notices
required for meetings of shareholders, of the Board of Directors and of the
committees of the Board of Directors. Whenever requested by the requisite number
of shareholders or Directors, the Secretary shall give notice, in the name of
the shareholder or shareholders or Director or Directors making the request, of
a meeting of the shareholders or of the Board of Directors or of a committee of
the Board of Directors, as the case may be.  The Secretary shall sign all papers
to which the Secretary's signature may be necessary or appropriate, shall affix
and attest the seal of the Company to all instruments requiring the seal, shall
have the authority to certify the by-laws, resolutions of the shareholders and
Board of Directors and committees of the Board of Directors and other documents
of the Company as true and correct copies thereof and shall have such other
powers and duties as are commonly incidental to the office of Secretary and as
may be prescribed by the Board of Directors, the Executive Committee or the
Chairman.  The


                                     -11-
<PAGE>

Secretary shall report to the Chairman or such other officer as the Chairman
shall direct.

     SECTION 7.  The Treasurer shall have charge of and be responsible for the
collection, receipt, custody and disbursement of the funds of the Company. The
Treasurer shall deposit the Company's funds in its name in such banks, trust
companies or safe deposit vaults as the Board of Directors may direct.  Such
funds shall be subject to withdrawal only upon checks or drafts signed or
authenticated in such manner as may be designated from time to time by
resolution of the Board of Directors or of the Executive Committee.  The
Treasurer shall have the custody of such books and papers as in the practical
business operations of the Company shall naturally belong in the office or
custody of the Treasurer or as shall be placed in the Treasurer's custody by
order of the Board of Directors or the Executive Committee.  The Treasurer shall
have such other powers and duties as are commonly incidental to the office of
Treasurer or as may be prescribed for the Treasurer by the Board of Directors,
the Executive Committee or the Chairman.  Securities owned by the Company shall
be in the custody of the Treasurer or of such other officers, agents or
depositaries as may be designated by the Board of Directors or the Executive
Committee.  The Treasurer may be required to give bond to the Company for the
faithful discharge of the duties of the Treasurer in such form and in such
amount and with such surety as shall be determined by the Board of Directors.
The Treasurer shall report to the Chairman or such other officer as the Chairman
shall direct.

     SECTION 8.  The Comptroller shall be responsible for the executive
direction of the accounting organization and shall have functional supervision
over the records of all other departments pertaining to revenues, expenses,
money, securities, properties, materials and supplies.  The Comptroller shall
prescribe the form of all vouchers, accounts and accounting procedures, and
reports required by the various departments.  The Comptroller shall be
responsible for the preparation and interpretation of all accounting reports
and financial statements as required and for the proper review and approval of
all bills received for payment.  No bill or voucher shall be so approved unless
the charges covered by the bill or voucher shall have been previously approved
through job order, requisition or otherwise by the head of the department in
which it originated, or unless the Comptroller shall otherwise be satisfied of
its propriety and correctness.  The Comptroller shall have such other powers and
duties as are commonly incidental to the office of Comptroller or as may be
prescribed for the Comptroller by the Board of Directors, the Executive
Committee or the Chairman.  The Comptroller may be required to give bond to the
Company for the faithful discharge of the duties of the Comptroller in such form
and in such amount and with such surety as shall be determined by the Board of


                                     -12-
<PAGE>

Directors.  The Comptroller shall report to the Chairman or such other officer
as the Chairman shall direct.

     SECTION 9.  Assistant Secretaries, Assistant Treasurers and Assistant
Comptrollers, when elected or appointed, shall respectively assist the
Secretary, the Treasurer and the Comptroller in the performance of the
respective duties assigned to such principal officers, and in assisting such
principal officer, each of such assistant officers shall for such purpose have
the powers of such principal officer.  In case of the absence, disability,
death, resignation or removal from office of any principal officer, such
principal officer's duties shall, except as otherwise ordered by the Board of
Directors or the Executive Committee, temporarily devolve upon such assistant
officer as shall be designated by the Chairman.


                                  ARTICLE VI.

                                INDEMNIFICATION.

     SECTION 1.  (a) A Director of the Company shall not be personally liable to
the Company or its shareholders for monetary damages for breach of fiduciary
duty as a Director, except for liability (i) for any breach of the Director's
duty of loyalty to the Company or its shareholders, (ii) for acts or omissions
not in good faith or that involve intentional misconduct or a knowing violation
of law, (iii) under Section 8.65 of the Illinois Business Corporation Act of
1983, as amended, or (iv) for any transaction from which the Director derived an
improper personal benefit.  If the Illinois Business Corporation Act of 1983 is
amended to authorize corporate action further eliminating or limiting the
personal liability of Directors, then the liability of a Director of the Company
shall be eliminated or limited to the full extent permitted by the Illinois
Business Corporation Act of 1983, as so amended.  Any repeal or modification of
this Section 1(a) by the shareholders of the Company shall not adversely affect
any right or protection of a Director of the Company existing at the time of
such repeal or modification.

     (b) Each person who is or was or had agreed to become a Director or officer
of the Company, and each person who is or was serving or who had agreed to serve
at the request of the Board of Directors or an officer of the Company as an
employe or agent of the Company or as a director, officer, employe, or agent,
trustee or fiduciary of another corporation, partnership, joint venture, trust
or other enterprise (including the heirs, executors, administrators or estate of
such person), shall be indemnified by the Company to the full extent permitted
by the Illinois Business Corporation Act of 1983 or any other applicable laws as
presently or hereafter in effect.  Without limiting the generality of the
foregoing, the Company may enter into one or more agreements with

                                     -13-

<PAGE>

any person which provide for indemnification greater or different than that
provided in this Section 1(b).  Any repeal or modification of this Section 1(b)
shall not adversely affect any right or protection existing hereunder
immediately prior to such repeal or modification.

     SECTION 2.  The provisions of this Article shall be deemed to be a contract
between the Company and each Director or officer who serves in any such capacity
at any time while this Article is in effect, and any repeal or modification of
this Article shall not affect any rights or obligations hereunder with respect
to any state of facts then or theretofore existing or any action, suit or
proceeding theretofore or thereafter brought or threatened based in whole or in
part upon any such state of facts.

     SECTION 3.  The indemnification provided or permitted by this Article shall
not be deemed exclusive of any other rights to which those indemnified may be
entitled by law or otherwise, and shall continue as to a person who has ceased
to be a Director, officer, employee or agent and shall inure to the benefit of
the heirs, executors and administrators of such person.

     SECTION 4.  The Company may purchase and maintain insurance on behalf of
any person who is or was a Director, officer, employee or agent of the Company,
or who is or was serving at the request of the Company as a director, officer,
employee or agent of another corporation or of a partnership, joint venture,
trust or other enterprise, against any liability asserted against such person
and incurred by such person in any such capacity, or arising out of his or her
status as such, whether or not the Company would have the power to indemnify
such person against such liability under the laws of the State of Illinois.


                                  ARTICLE VII.

                                 MISCELLANEOUS.

     SECTION 1.  No bills shall be paid by the Treasurer unless reviewed and
approved by the Comptroller or by some other person or committee expressly
authorized by the Board of Directors, the Executive Committee, the Chairman or
the Comptroller to review and approve bills for payment.

     SECTION 2.  All checks, drafts or other orders for payment of money issued
in the name of the Company shall be signed by such officers, employees or agents
of the Company as shall from time to time be designated by the Board of
Directors, the Chairman, the chief financial officer of the Company or the
Treasurer.

     SECTION 3.  Any and all shares of stock of any corporation owned by the
Company and any and all voting trust certificates

                                     -14-

<PAGE>

owned by the Company calling for or representing shares of stock of any
corporation may be voted at any meeting of the shareholders of such corporation
or at any meeting of the holders of such certificates, as the case may be, by
any one of the principal officers of the Company upon any question which may be
presented at such meeting, and any such officer may, on behalf of the Company,
waive any notice required to be given of the calling of such meeting and consent
to the holding of any such meeting without notice.  Any such principal officer
other than the Secretary, acting together with the Secretary or an Assistant
Secretary, shall have authority to give to any person a written proxy, in the
name of the Company and under its corporate seal, to vote any or all shares of
stock or any or all voting trust certificates owned by the Company upon any
question that may be presented at any such meeting of shareholders or
certificate holders, with full power to waive any notice of the calling of such
meeting and consent to the holding of such meeting without notice.

     SECTION 4.  The fiscal year of the Company shall begin on the first day of
January and end on the last day of December in each year.


                                 ARTICLE VIII.

                  ALTERATION, AMENDMENT OR REPEAL OF BY-LAWS.

     These by-laws may be altered, amended or repealed by the shareholders or 
the Board of Directors.


                                     -15-


<PAGE>



                                                    Exhibit 5
                                                    CECo Holding Company
                                                    Form S-4
                                                    File No. 33-


                                SIDLEY & AUSTIN
               A PARTNERSHIP INCLUDING PROFESSIONAL CORPORATIONS
 
Los Angeles               One First National Plaza                London
   ----                   Chicago, Illinois 60603                  ----
 New York                Telephone  312:  853-7000               Singapore
   ----                       Telex  25-4364                       ----
Washington, D.C.         Facsimile  312:  853-7036                 Tokyo

                                  Founded 1866

(312) 853-2227
 

                                January 31, 1994


CECo Holding Company
10 South Dearborn Street
P.O. Box 767
Chicago, Illinois 60690-0767

          Re:  215,770,000 Shares of Common Stock,
               without par value
               -----------------------------------

Ladies and Gentlemen:

          We refer to the Registration Statement on Form S-4 (the "Registration
Statement") being filed by CECo Holding Company, an Illinois corporation (the
"Company"), with the Securities and Exchange Commission (the "Commission") under
the Securities Act of 1933, as amended (the "Securities Act"), relating to the
registration of 215,770,000 shares of Common Stock, without par value (the "New
Shares"), of the Company.

          We are familiar with the proceedings to date with respect to the
proposed issuance, sale and delivery of the New Shares and have examined such
records, documents and questions of law, and satisfied ourselves as to such
matters of fact, as we have considered relevant and necessary as a basis for the
opinions expressed herein.

          Based on the foregoing, we are of the opinion that:

          1.  The Company is duly incorporated and validly existing under the
laws of the State of Illinois.

          2.  The New Shares will be legally issued, fully paid and non-
assessable when (i) the Registration Statement, as finally amended, shall have
become effective under the Securities Act; (ii) the Company's Board of Directors
shall have duly adopted final resolutions authorizing the issuance, sale and
delivery of the New Shares as contemplated by the Registration Statement; (iii)
in the case of the New Shares issuable pursuant to the sale of such shares under
the Employe Savings and Investment Plan and Employe Stock Purchase Plan (the
"Stock Purchase Plan") of Commonwealth Edison Company, an Illinois corporation
("Edison"), post-effective amendments to the Registration Statement on Form S-8
shall have been filed with the Commission and become effective under the
Securities Act and all other conditions and requirements applicable to the
delivery of such New Shares upon such sale in accordance with the governing
instruments shall have been duly satisfied; (iv) in the case of
<PAGE>

CECo Holding Company
January 31, 1994
Page 2

the New Shares issuable pursuant to the sale of such shares under the Stock
Purchase Plan, certificates representing the New Shares shall have been duly
executed, countersigned and registered and duly delivered to the persons
entitled thereto against receipt of the agreed consideration therefor; and (v)
the merger of CECo Merging Corporation, an Illinois corporation, with and into
Edison described in the Registration Statement shall have become effective as
described therein.

          We do not find it necessary for the purposes of this opinion to cover,
and accordingly we express no opinion as to, the application of the securities
or blue sky laws of the various states to the sale of the New Shares.

          We hereby consent to the filing of this opinion letter as an Exhibit
to the Registration Statement and to all references to our firm included in or
made a part of the Registration Statement.

                                 Very truly yours,



                                 SIDLEY & AUSTIN

<PAGE>




                                                        Exhibit 8
                                                        CECo Holding Company
                                                        Form S-4
                                                        File No. 33- 



                                SIDLEY & AUSTIN
               A PARTNERSHIP INCLUDING PROFESSIONAL CORPORATIONS
 
Los Angeles               One First National Plaza                London
   ----                   Chicago, Illinois 60603                  ----
 New York                Telephone  312:  853-7000               Singapore
   ----                       Telex  25-4364                       ----
Washington, D.C.         Facsimile  312:  853-7036                 Tokyo

                                  Founded 1866


 (312) 853-2227         


                               January 28, 1994


Commonwealth Edison Company
10 South Dearborn Street
Post Office Box 767
Chicago, Illinois  60690-0767

Gentlemen:

          We are counsel to Commonwealth Edison Company, an Illinois corporation
("Edison").  We have been requested by Edison to render this opinion in
connection with a proposed corporate restructuring (the "Merger") in which
Edison will become a subsidiary of a new holding company currently named CECo
Holding Company ("Holding Company"), with the current holders of the outstanding
shares of Edison Common Stock becoming the holders of all the outstanding shares
of common stock of Holding Company.

          Edison has entered into an Agreement and Plan of Merger (the "Merger
Agreement"), dated as of January 28, 1994, and a Supplemental Agreement, dated
as of January 28, 1994, pursuant to which CECo Merging Corporation ("Merging
Corp."), a newly organized Illinois corporation which is a wholly-owned
subsidiary of Holding Company, will be merged into Edison.  As a result of the
Merger, each share of Edison Common Stock will be converted into one share of
Holding Company Common Stock and Edison will become a subsidiary of Holding
Company.  The proposed transaction, the Merger Agreement and the Supplemental
Agreement are more fully described in the Registration Statement on Form S-4 to
be filed by Holding Company with the Securities and Exchange Commission on
January 31, 1994, pursuant to the Securities Act of 1933, as amended (the
"Registration Statement").  Defined terms not otherwise defined herein have the
meanings ascribed to them in the Registration Statement.

          Based upon our review of the Registration Statement, the Merger
Agreement, the Supplemental Agreement and such other documents as we have deemed
necessary and upon certain representations made by Edison, we are of the opinion
that, assuming the Merger and all other events occur as contemplated in the
Registration Statement, under the Federal income tax law in effect on the date
hereof:
<PAGE>

Commonwealth Edison Company
January 28, 1994
Page 2

          1) no gain or loss will be recognized by non-dissenting holders of
     Edison Common Stock upon the conversion of Edison Common Stock into Holding
     Company Common Stock in the Merger;

               2)  no gain or loss will be recognized by non-dissenting holders
     of Edison Preferred Stock or Edison Preference Stock as a result of the
     Merger;

               3)  the basis of the Holding Company Common Stock deemed received
     in the Merger by non-dissenting holders of Edison Common Stock will be the
     same as the basis of the Edison Common Stock converted into such Holding
     Company Common Stock in the Merger;

               4)  the holding period of Holding Company Common Stock deemed
     received in the Merger by non-dissenting holders of Edison Common Stock
     will include the period during which they held the Edison Common Stock
     converted into such Holding Company Common Stock in the Merger, provided
     such Edison Common Stock is held as a capital asset by such holders at the
     effective time of the Merger; and

               5)  no gain or loss will be recognized by Holding Company or
     Edison as a result of the Merger.

                                    Very truly yours,
 


                                    SIDLEY & AUSTIN




<PAGE>

                                                   Exhibit 23(b)       
                                                   CECo Holding Company
                                                   Form S-4            
                                                   File No. 33-         


                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

     As independent public accountants, we hereby consent to the incorporation
by reference in this Form S-4 Registration Statement of our reports dated
January 28, 1993, included or incorporated by reference in Commonwealth Edison
Company's Annual Report on Form 10-K for the year ended December 31, 1992 and
our reports dated May 13, 1993, August 11, 1993 and November 10, 1993, included
in Commonwealth Edison Company's Quarterly Reports on Form 10-Q for the
quarterly periods ended March 31, 1993, June 30, 1993 and September 30, 1993.
We also hereby consent to all references to our Firm included in this Form S-4
Registration Statement.



                                                    ARTHUR ANDERSEN & CO.


Chicago, Illinois
January 31, 1994

<PAGE>

[X] PLEASE MARK YOUR VOTES AS IN THIS EXAMPLE.              Exhibit 99(a)
                                                            CECo Holding Company
                                                            Form S-4
                                                            File No. 33-

THIS PROXY/DIRECTION WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED
HEREIN. IF NO DIRECTION IS MADE, IT WILL BE VOTED FOR ELECTION OF DIRECTORS AND 
FOR ITEMS B, C AND D.
- --------------------------------------------------------------------------------
                                                        FOR      WITHHELD
A. Election of Directors                                [_]        [_]
FOR except vote withheld from the following nominee(s):
                                                        ------------------------
            Director Nominees:

Jean Allard              Byron Lee, Jr.
James W. Compton         Edward A. Mason
Sue L. Gin               James J. O'Connor
Donald P. Jacobs         Frank A. Olson
George E. Johnson        Samuel K. Skinner
Harvey Kapnick

- -------------------------------------------------------
                                                  FOR      AGAINST      ABSTAIN
B. AGREEMENT AND PLAN OF MERGER                   [_]        [_]          [_]

                                                  FOR      AGAINST      ABSTAIN
C. AMENDMENT TO EDISON'S RESTATED ARTICLES        [_]        [_]          [_]

                                                  FOR      AGAINST      ABSTAIN
D. APPOINTMENT OF AUDITORS                        [_]        [_]          [_]

- --------------------------------------------------------------------------------
If you have noted comments on the other side of the card, please mark box at 
right. [_]

SIGNATURE(S)______________________________DATE_________
The signer hereby revokes all proxies heretofore given by the signer to vote at 
said meeting or any adjournments thereof.

NOTE: Please sign exactly as name appears hereon. Joint owners should each sign.
When signing as attorney, executor, administrator, trustee or guardian, please 
give full title as such.
- --------------------------------------------------------------------------------
                           . FOLD AND DETACH HERE .


(COMMONWEALTH EDISON LOGO APPEARS HERE)

TO OUR SHAREHOLDERS

  The regular annual meeting of shareholders of Commonwealth Edison Company will
be held on Tuesday, May 10, 1994 in the Grand Ballroom of the Chicago Hilton and
Towers, 720 South Michigan Avenue, Chicago, Illinois. You are invited to attend.

  The enclosed Proxy Statement describes several items of business to be 
conducted at that meeting. Along with the usual election of Directors and 
appointment of auditors, you are asked to vote on a proposed corporate 
restructuring and an amendment to the Commonwealth Edison Restated Articles of 
Incorporation.

  As always, your vote is very important. This year it will help to determine 
the future course of our Company. Therefore, I urge you to exercise your proxy 
and return it as early as possible. This action will expedite the tabulation 
process and minimize costs associated with possible follow-up mailings or 
reminder contacts.

  Even if you now expect to attend the annual meeting, please sign, date and 
return the accompanying proxy in the enclosed addressed, postage-paid envelope. 
(You may revoke your proxy at any time before it is voted by delivering written 
notice of such revocation to Commonwealth Edison, executing a subsequent proxy 
or attending the annual meeting and voting in person.)


                                             Sincerely,



                                             James J. O'Connor
                                             Chairman
<PAGE>

                              COMMONWEALTH EDISON
                              10 South Dearborn Street
(COMMONWEALTH EDISON LOGO)    Post Office Box 767                PROXY/DIRECTION
                              Chicago, Illinois 60690-0767
- --------------------------------------------------------------------------------
   THIS PROXY/DIRECTION IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF
              COMMONWEALTH EDISON COMPANY (THE "COMPANY") FOR THE
                ANNUAL MEETING OF STOCKHOLDERS ON MAY 10, 1994.

  The undersigned appoints James J. O'Connor, Samuel K. Skinner and David A. 
Scholz, or any of them, as Proxies each with the power to appoint his 
substitute, and hereby authorizes them to represent and to vote, as designated 
on the reverse side, all shares of the Company's stock held in the undersigned's
name and shares held by agents in Plans, hereafter described, subject to the 
voting direction of the undersigned at the Annual Meeting of Stockholders to be 
held on May 10, 1994, or any adjournment thereof and, in the Proxies' 
discretion, to vote upon such other business as may properly come before the 
meeting, all as more fully set forth in the Proxy Statement related to such 
meeting, receipt of which is hereby acknowledged.

  ALL SHARES VOTABLE HEREBY BY THE UNDERSIGNED INCLUDE SHARES, IF ANY, HELD IN 
THE NAME OF AGENTS, FOR THE BENEFIT OF THE UNDERSIGNED, IN THE COMPANY'S 
DIVIDEND REINVESTMENT AND STOCK PURCHASE PLAN AND THE COMPANY'S EMPLOYE SAVINGS 
AND INVESTMENT PLAN TRUST.

Comment/Change of address:                                     -----------------
                                                                   PLEASE SEE
- ----------------------------------------------------------        REVERSE SIDE
                                                               -----------------
- ----------------------------------------------------------
- --------------------------------------------------------------------------------
 

<PAGE>

                                                        Exhibit 99(b)
                                                        CECo Holding Company
                                                        Form S-4
                                                        File No. 33-



                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Jean Allard
                                        ------------------------
                                             Jean Allard
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ James W. Compton
                                        --------------------------
                                             James W. Compton
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Sue L. Gin
                                        -----------------------
                                             Sue L. Gin
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Donald P. Jacobs
                                        --------------------------
                                             Donald P. Jacobs
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ George E. Johnson
                                        ---------------------------
                                             George E. Johnson
<PAGE>


                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Harvey Kapnick
                                        -------------------------
                                             Harvey Kapnick
<PAGE>
                        CONSENT OF PROSPECTIVE DIRECTOR

         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Byron Lee, Jr.
                                        -------------------------
                                             Byron Lee, Jr.
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR


         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Edward A. Mason
                                        --------------------------
                                             Edward A. Mason
<PAGE>

                        CONSENT OF PROSPECTIVE DIRECTOR


         The undersigned, being a director of Commonwealth Edison Company, an
Illinois corporation, acting in accordance with Rule 438 promulgated under the
Securities Act of 1933, as amended, hereby consents to being named as a
prospective director of CECo Holding Company, an Illinois corporation, in the
Registration Statement on Form S-4 of CECo Holding Company.

Dated January 31, 1994



                                         /s/ Frank A. Olson
                                        -------------------------
                                             Frank A. Olson


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