SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C. 20549



                                   Form 8-K



                                CURRENT REPORT



                      Pursuant to Section 13 or 15(d) of
                      the Securities Exchange Act of 1934



Date of Report (Date of earliest event reported): September 22, 1999



                               PECO ENERGY COMPANY
             (Exact name of registrant as specified in its charter)




        Pennsylvania             1-1401             23-0970240
       (State or other        (Commission         (IRS Employer
       jurisdiction of        file number)       Identification
        incorporation)                                Number)




              230l Market Street, Philadelphia, Pennsylvania 19101
               (Address of principal executive offices) (Zip Code)


               Registrant's telephone number, including area code:
                                 (215) 841-4000


Item 5.  Other Events

  Merger  Agreement.  On September 23, 1999, Unicom  Corporation  ("Unicom") and
PECO Energy Company ("PECO"), issued a joint press release announcing that they,
along with a wholly  owned  subsidiary  of PECO  ("Newco"),  had entered into an
Agreement  and Plan of Exchange and Merger,  dated as of September 22, 1999 (the
"Merger Agreement").

  PECO is  filing  this Form 8-K to  provide  additional  information  about the
transactions   contemplated  by  the  Merger  Agreement  before  PECO  commences
repurchases  of shares of its  common  stock,  as more  fully  described  below.
Nothing  contained  herein shall be  considered a  solicitation  of any proxy to
approve such transactions.

  The  Merger  Agreement  was filed by PECO  with the  Securities  and  Exchange
Commission as an exhibit to the Form 8-K filed September 29, 1999. The following
description  of the Merger  Agreement  does not  purport to be  complete  and is
qualified  in its  entirety  by  reference  to  the  provisions  of  the  Merger
Agreement.

  The  Merger  Agreement   provides  for  (a)  the  mandatory  exchange  of  the
outstanding common stock, no par value, of PECO ("PECO Common Stock") for common
stock of Newco ("Newco Common Stock") or cash (the "Share Exchange") and (b) the
merger of Unicom with and into Newco (the  "Merger" and together  with the Share
Exchange, the "Merger  Transaction").  In the Merger, holders of the outstanding
common stock, no par value of Unicom ("Unicom Common Stock") will exchange their
shares for Newco Common Stock or cash. As a result of the Share  Exchange,  PECO
will  become a wholly  owned  subsidiary  of Newco.  As a result of the  Merger,
Unicom will cease to exist and its subsidiaries,  including  Commonwealth Edison
Company, an Illinois corporation  ("ComEd"),  will become subsidiaries of Newco.
Thus, following the Merger Transaction, Newco will be a holding company with two
principal utility subsidiaries, ComEd and PECO, and additional subsidiaries.



                                       2

  Repurchase  of Unicom  Common Stock.  The Merger  Agreement  requires that the
Merger be  accounted  for as a  purchase  of Unicom by PECO in  accordance  with
generally accepted accounting principles ("GAAP"). Based on the number of shares
of PECO Common Stock and Unicom Common Stock  outstanding as of the date hereof,
the number of shares of PECO Common  Stock which PECO  anticipates  repurchasing
prior to the  consummation  of the  Merger  Transaction  and  other  anticipated
changes in the number of outstanding shares (such as option  exercises),  Unicom
expects to purchase  approximately  six million  shares of Unicom  Common  Stock
prior to the  closing of the Merger  Transaction.  This number is in addition to
the 20.1 million shares of Unicom Common Stock that Unicom expects to repurchase
no later than February 2000 under certain forward purchase contracts.

  Unicom  expects that it will commence share  repurchases  following the filing
hereof and will continue  purchasing shares from time to time on the open market
or through negotiated purchases.

  Repurchase of PECO Common Stock. PECO expects to purchase  approximately  four
million  shares  of  PECO  Common  Stock  prior  to the  closing  of the  Merger
Transaction.  This  number is in  addition  to the 38.7  million  shares of PECO
Common  Stock  that  have  been  previously  purchased  with  proceeds  from its
securitization of stranded costs.

   PECO expects that it will  commence  share  repurchases  following the filing
hereof and will continue  purchasing shares from time to time on the open market
or through negotiated purchases.

  Cost Savings. The combined companies expect to achieve net annual cost savings
of  approximately  $100  million in the first year after the close of the Merger
Transaction,  which grow to over $180 million by the third year.  The  companies
expect that sixty percent of these savings will come from  regulated  operations
and forty percent will come from unregulated operations.  These cost savings are
expected  to  result   primarily  from  eliminating   duplicate   corporate  and
administrative  positions and programs and achieving efficiencies in operations,
business processes and purchasing. Based on these


                                       3

cost savings,  excluding  one-time  merger-related  costs,  the  transaction  is
expected to be accretive  in the first year after  closing.  In  addition,  as a
result of the combination, the companies expect to achieve revenue enhancements.

Item 7. Financial Statements and Exhibits
 (b)  Pro Forma Financial Information

  Unaudited Pro Forma Combined  Condensed  Financial  Statements.  The following
unaudited pro forma combined condensed  financial  statements have been prepared
to  reflect  the  acquisition  of Unicom by PECO  under the  purchase  method of
accounting. The historical consolidated financial statements of Unicom have been
adjusted to give effect to the sale of ComEd's fossil  generating plants and the
annualized effects of Unicom's issuance of securitization  notes and related use
of proceeds ("Unicom Pro Forma Adjustments"). ComEd expects to complete the sale
of its  fossil  generating  plants  during  the  fourth  quarter  of  1999.  The
historical  consolidated financial statements of PECO have been adjusted to give
effect to its use of the remaining  proceeds from its securitization of stranded
costs  ("PECO  Pro  Forma  Adjustments").  The  unaudited  pro  forma  financial
statements  do not  give  effect  to the  estimated  cost  savings  and  revenue
enhancements as a result of the Merger  Transaction or the costs to achieve such
savings and revenue  enhancements or one-time  merger-related  costs. The Unicom
and PECO Pro Forma  Adjustments and the Merger  Transaction are reflected in the
unaudited combined condensed pro forma balance sheet as if they occurred on June
30, 1999.  The unaudited pro forma combined  condensed  statements of income for
the six months  ended June 30,  1999 and for the year ended  December  31,  1998
assume that these transactions were completed on January 1, 1998.

  The unaudited pro forma combined condensed financial statements do not reflect
potential  adjustments to Unicom's assets and liabilities to reflect fair value,
as will be required upon  consummation of the Merger  Transaction under purchase
accounting.  Such adjustments to the book value of assets and liabilities  could
be  significant,  particularly  with  respect  to  Unicom's  nuclear  generating
stations.  The fair value of the nuclear  generating  stations is expected to be
determined considering,  among other things,  independent appraisals or expected
cash flows. To the extent the fair value of Unicom's nuclear generating stations
is  ultimately  determined  to be less than the June 30, 1999 book value of $6.9
billion,  additional  goodwill and/or an identifiable  intangible  asset will be
recorded.  The results of the fair value  determination are not currently known;
however, the ultimate determination is not expected to have a dilutive effect on
results of operations.

  The  following  unaudited  pro forma  financial  statements  should be read in
conjunction with the consolidated  historical  financial  statements and related
notes of PECO and Unicom,  which are included in their respective Annual Reports
on Form 10-K for the year ended December 31, 1998 and Quarterly  Reports on Form
10-Q for the quarter ended June 30, 1999.  PECO has provided all the information
included  in this  Form 8-K  regarding  PECO and its  subsidiaries.  Unicom  has
provided all the information  included in this Form 8-K regarding Unicom and its
subsidiaries.  Neither  PECO  nor  Unicom  assumes  any  responsibility  for the
accuracy or completeness of the information provided by the other party.

  The following  unaudited pro forma financial  statements are for  illustrative
purposes only. They are not necessarily  indicative of the financial position or
operating results that would have occurred had these transactions been completed
on January 1, 1998 or June 30, 1999, as assumed  above;  nor is the  information
necessarily  indicative  of future  financial  position  or  operating  results.
Results  of  operations   and  financial   position  in  the  first  year  after
consummation  could differ  significantly  from the unaudited pro forma combined
condensed financial statements, which are based on past operations.


                                       4

Future  operations  will be  affected  by various  factors  including  operating
performance, energy market developments, and other matters.

  The unaudited pro forma financial  statements assume that  approximately  $180
million of PECO  available  funds will be used to  purchase  approximately  four
million  shares  of  PECO  Common  Stock  prior  to the  closing  of the  Merger
Transaction.  Given  the  assumption  of  PECO  share  repurchases,  the  Merger
Transaction  requires  Unicom to purchase  26.1 million  shares of Unicom Common
Stock prior to the  closing of the Merger  Transaction.  Unicom  expects to meet
this requirement  through a currently existing pre-paid forward contract for the
purchase of 20.1  million  shares and the  purchase of  approximately  6 million
additional shares from available funds. Unicom and PECO anticipate that the $750
million cash  consideration  to be paid to each  company's  shareholders  in the
Merger Transaction will be provided from available funds of each company.

  The historical  financial  statements of PECO included in the accompanying pro
forma combined condensed financial  statements for the six months ended June 30,
1999 are unaudited.  The December 31, 1998  historical  financial  statements of
PECO and Unicom and the June 30, 1999 historical  financial statements of Unicom
were  derived  from  audited  financial   statements  but  do  not  include  all
disclosures required by GAAP.

  Forward-looking  statements.  Except  for  historical  data,  the  information
contained  in this Form 8-K  constitutes  forward-looking  statements.  Forward-
looking  statements  are  inherently  uncertain  and  subject  to risks  and the
statements  should be viewed with caution.  Actual  results or experience  could
differ  materially  from the  forward-looking  statements  as a  result  of many
factors,  including  without  limitation,   those  factors  discussed  below  or
elsewhere in this Form 8-K.

  The  forward-looking  statements  in this  Form  8-K  include  the  statements
regarding the estimated  number of shares of Unicom Common Stock to be purchased
by Unicom in order to comply with the Merger Agreement;  the number of shares of
PECO  Common  Stock  to  be  purchased  prior  to  the  closing  of  the  Merger
Transaction;  the  expected  source  of  funds  necessary  to  provide  the cash
consideration  in the Merger  Transaction  and to acquire Unicom and PECO Common
Stock prior to the closing of the Merger Transaction; the estimated cost savings
to be  achieved  as a result of the Merger  Transaction  and the source of those
savings;  the statement that the  transaction is expected to be accretive in the
first year after closing  (excluding  one-time  merger-related  costs);  and the
statement that the companies expect to achieve revenue enhancements.

  These forward-looking  statements are subject to numerous  assumptions,  risks
and  uncertainties.  Factors that may cause actual  results to differ from those
indicated  by  such  forward-looking   statements  include,  among  others,  the
following:

 . The fact that these forward-looking statements are based on information of a
  preliminary nature which may be subject to further and continuing review and
  adjustment;

 . The risk of legislative,  regulatory or other  governmental  action seeking to
  impose  additional  restrictions  on the  operations  of  Unicom or PECO or to
  increase  the  burden  of  necessary   regulatory  approvals  for  the  Merger
  Transaction, or the imposition of unfavorable terms as a condition of approval
  of the Merger Transaction;

 . The risk of a significant delay in the expected  completion of, and unexpected
  consequences resulting from the Merger Transaction, including the inability to
  close the transaction or unexpected difficulties in integrating the operations
  of the two companies; difficulties in achieving anticipated cost savings;


                                       5

  difficulties in achieving other operational improvements and revenue
  enhancements;

 . The risk that the  assumptions and estimates  underlying the anticipated  cost
  savings  may prove to be faulty or other  factors  may  adversely  affect  the
  amount, nature or timing of anticipated cost savings;

 . The risk  that  competition,  difficulties  encountered  by the  companies  in
  coordinating  new  business  ventures or other  difficulties  could  adversely
  affect the amount, nature or timing of anticipated revenue enhancements;

 . Changes in the number of shares of outstanding common stock of Unicom and
  PECO for reasons not foreseen at the date hereof;

 . Changes in the amount of proceeds  received by the companies from asset sales,
  securitization  transactions or other factors  affecting the amount and timing
  of receipt of available funds to provide the cash consideration for the Merger
  Transaction or share repurchases;

 . The increasingly  competitive  nature of the electric,  natural gas and energy
  industries,  including the speed and degree to which competition  enters these
  industries and the risk that other  companies will further expand into markets
  in which Unicom or PECO operate;

 . The risk of unforeseen developments in the market for electricity in the areas
  in which Unicom and PECO conduct their business  including  changes  resulting
  from  regulatory  changes,  the influence of  developments  in the  regulatory
  environments  in other areas,  adverse  weather  conditions and changes in the
  overall economy, any or all of which may affect revenues and margins;

 . The risks  associated  with Unicom's and PECO's  nuclear  generating  stations
  including  the  capacity  factor  of those  stations,  which  may  affect  the
  utilities' electricity generation and purchased power costs;

 . Other  considerations  that may be disclosed  from time to time in Unicom's or
  PECO's publicly disseminated documents or filings.

     Unicom  and PECO  make no  commitment  to  disclose  any  revisions  to the
forward-looking statements, or any facts, events or circumstances after the date
hereof that may bear upon the forward-looking statements.


                UNAUDITED PRO FORMA CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                  FOR THE SIX MONTH PERIOD ENDED JUNE 30, 1999



                                                                PECO            PECO
                                                  PECO      Securitization    Prior to
                                                   As          ProForma        Merger
                                                 Filed      Adjustments(1)    ProForma
                                                -------    ---------------    --------
                                                                     
Operating Revenues
 Electric                                       $ 2,144        $    --         $2,144
 Gas                                                307             --            307
                                                -------        ----------     --------

    Total Operating Revenues                    $ 2,451        $    --         $2,451
                                                -------        ----------     --------
Operating Expenses
 Fuel and Energy Interchange                    $   965        $    --         $  965
 Operation and Maintenance                          628             --            628
 Depreciation and Amortization                      114             --            114
 Goodwill Amortization                              --              --            --
 Taxes Other Than Income Taxes                      121             --            121
                                                -------        ----------     --------
    Total Operating Expenses                    $ 1,828        $    --         $1,828
                                                -------        ----------     --------
Operating Income                                $   623        $    --         $  623
                                                -------        ----------     --------
Other Income and Deductions
 Interest Expense                               $  (188)       $     (15)      $ (203)
 Preferred and Preference Stock Dividends           --              --            --
 Other, net                                         (59)              10          (49)
                                                -------        ----------     --------
    Total Other Income and Deductions           $  (247)       $      (5)      $ (252)
                                                -------        ----------     --------
Income Before Income Taxes
and Extraordinary Item                          $   376        $      (5)      $  371
Income Tax Expense                                  139               (2)         137
                                                -------        ----------     --------
Income Before Extraordinary Item                $   237        $      (3)      $  234
                                                =======        ==========     ========
 Preferred Stock Dividends                      $     7        $      (1)      $    6
                                                =======        ==========     ========
Income Before Extraordinary
 Item per Share                                 $  1.11
                                                =======
Income Before Extraordinary
 Item per Share-Diluted                         $  1.10
                                                =======
Average Basic Shares Outstanding                  207.6
                                                =======
Average Diluted Shares Outstanding                209.1
                                                =======


                                      6


                UNAUDITED PRO FORMA CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                  FOR THE SIX MONTH PERIOD ENDED JUNE 30, 1999



                                                                        UNICOM               UNICOM                UNICOM
                                                    UNICOM           Fossil Sale         Securitization           Prior to
                                                      As               ProForma             ProForma               Merger
                                                    Filed           Adjustments(3)       Adjustments(4)           ProForma
                                                  ----------        --------------       --------------           --------
                                                                                                      
 Operating Revenues
         Electric                                   $  3,224          $        --            $      --             $3,224
         Gas                                              --                   --                   --                 --
                                                    --------          -----------            ---------            -------
            Total Operating Revenues                $  3,224          $        --            $      --             $3,224
                                                    --------          -----------            ---------            -------
 Operating Expenses
         Fuel and Energy Interchange                $    664          $        64            $      --            $   728
         Operation and Maintenance                     1,205                 (132)                  --              1,073
         Depreciation and Amortization                   498                   52                   --                550
         Goodwill Amortization                            --                   --                   --                 --
         Taxes Other Than Income Taxes                   248                   (7)                  --                241
                                                    --------          -----------            ---------            -------
            Total Operating Expenses                $  2,615          $       (23)           $      --             $2,592
                                                    --------          -----------            ---------            -------
 Operating Income                                   $    609          $        23            $      --            $   632
                                                    --------          -----------            ---------            -------
 Other Income and Deductions
         Interest Expense                           $   (287)         $        --            $      13            $  (274)
         Preferred and Preference Stock Dividends        (33)                  --                    3                (30)
         Other, net                                       52                   42                    5                 99
                                                    --------          -----------            ---------            -------
            Total Other Income and Deductions       $   (268)         $        42            $      21            $  (205)
                                                    --------          -----------            ---------            -------

 Income Before Income Taxes
 and Extraordinary Item                             $    341          $        65            $      21            $   427

 Income Tax Expense                                      124                   26                    7                157
                                                    --------          -----------            ---------            -------
 Income Before Extraordinary Item                   $    217          $        39            $      14            $   270
                                                    ========          ===========            =========            =======

 Income Before Extraordinary
    Item per Share                                  $   1.00
                                                    ========
 Income Before Extraordinary
    Item per Share - Diluted                        $   1.00
                                                    ========

 Average Basic Shares Outstanding                      217.2
                                                    ========
 Average Diluted Shares Outstanding                    218.1
                                                    ========


                                       7


           UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                  FOR THE SIX MONTH PERIOD ENDED JUNE 30, 1999



                                            PECO         UNICOM
                                           Prior to     Prior to      Merger
                                            Merger       Merger     ProForma     Merger
                                           ProForma     ProForma    Adjustments  ProForma
                                           ---------    ---------   -----------  --------
                                                                     
Operating Revenues
  Electric                                  $2,144        $3,224     $  (30)(8)   $5,338
  Gas                                          307            --         --          307
                                            ------        ------     ------       ------
    Total Operating Revenues                $2,451        $3,224     $  (30)      $5,645
                                            ------        ------     ------       ------
Operating Expenses
  Fuel and Energy Interchange               $  965        $  728     $  (30)(8)   $1,663
  Operation and Maintenance                    628         1,073         --        1,701
  Depreciation and Amortization                114           550        (90)(7)      574
  Goodwill Amortization                         --            --         38 (9)       38
  Taxes Other Than Income Taxes                121           241         --          362
                                            ------        ------     ------       ------
    Total Operating Expenses                $1,828        $2,592     $  (82)      $4,338
                                            ------        ------     ------       ------
Operating Income                            $  623        $  632     $   52       $1,307
                                            ------        ------     ------       ------
Other Income and Deductions
  Interest Expense                          $ (203)       $ (274)    $   --       $ (477)
  Preferred and Preference Stock Dividends      --           (30)       (11)(10)     (41)
  Other, net                                   (49)           99          5 (10)      55
                                            ------        ------     ------       ------
    Total Other Income and Deductions       $ (252)       $ (205)    $   (6)      $ (463)
                                            ------        ------     ------       ------

Income Before Income Taxes
and Extraordinary Item                      $  371         $ 427     $   46       $  844

Income Tax Expense                             137           157         35          329
                                           -------        ------     ------       ------
Income Before Extraordinary Item            $  234         $ 270     $   11       $  515
                                           =======        ======     ======       ======
Preferred Stock Dividends                   $    6         $  --     $   (6)(10)  $   --
                                           =======        ======     ======       ======
Income Before Extraordinary
  Item per Share                                                                  $ 1.56
                                                                                  ======
Income Before Extraordinary
  Item per Share - Diluted                                                        $ 1.55
                                                                                  ======
Average Basic Shares Outstanding                                                   330.8(6)
                                                                                  ======
Average Diluted Shares Outstanding                                                 333.2
                                                                                  ======


                                      8


                UNAUDITED PRO FORMA CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                      FOR THE YEAR ENDED DECEMBER 31, 1998



                                                             PECO             PECO
                                            PECO       Securitization       Prior to
                                             As           Pro Forma          Merger
                                           Filed        Adjustments(1)     Pro Forma
                                           ------      ---------------      --------
                                                                   
Operating Revenues
  Electric                                 $4,811           $   -              $4,811
  Gas                                         399               -                 399
                                           ------           ------             ------
    Total Operating Revenues               $5,210           $   -              $5,210
                                           ------           ------             ------

Operating Expenses
  Fuel and Energy Interchange              $1,752           $   -              $1,752
  Operation and Maintenance                 1,253               -               1,253
  Depreciation and Amortization               643               -                 643
  Goodwill Amortization                        -                -                  -
  Taxes Other Than Income Taxes               279               -                 279
                                           ------           ------             ------
    Total Operating Expenses               $3,927           $   -              $3,927
                                           ------           ------             ------
Operating Income                           $1,283           $   -              $1,283
                                           ------           ------             ------
Other Income and Deductions
  Interest Expense                         $ (331)          $ (108)            $ (439)
  Preferred and preference stock
     dividends                                  -                -                   -
  Other, net                                 (100)              20                (80)
                                           ------           ------             ------
    Total Other Income and Deductions      $ (431)          $  (88)            $ (519)
                                           ------           ------             ------

Income Before Income Taxes
and Extraordinary Item                     $  852           $  (88)            $  764

Income Tax Expense                            320              (35)               285
                                           ------           ------             ------
Income Before Extraordinary Item           $  532           $  (53)            $  479
                                           ======           ======             ======
Preferred Stock Dividends                  $   13           $   (2)            $   11
                                           ======           ======             ======
Income Before Extraordinary
Item per Share                             $ 2.33
                                           ======

Income Before Extraordinary
Item per Share - Diluted                   $ 2.32
                                           ======

Average Basic Shares Outstanding            223.2
                                           ======

Average Diluted Shares Outstanding          223.9
                                           ======


                                      9


               UNAUDITED PRO FORMA CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                      FOR THE YEAR ENDED DECEMBER 31, 1998



                                                          UNICOM           UNICOM       UNICOM
                                              UNICOM    Fossil Sale    Securitization  Prior to
                                                As       Pro Forma        Pro Forma     Merger
                                              Filed   Adjustments(3)   Adjustments(4)  Pro Forma
                                              ------  --------------   --------------  --------
                                                                           
Operating Revenues
  Electric                                     $7,151      $  -            $  -         $7,151
  Gas                                             -           -               -            -
                                               ------      -----           -----        ------
    Total Operating Revenues                   $7,151      $  -            $  -         $7,151
                                               ------      -----           -----        ------
Operating Expenses
  Fuel and Energy Interchange                  $1,888      $ 168           $  -         $2,056
  Operation and Maintenance                     2,286       (254)             -          2,032
  Depreciation and Amortization                   943        140              -          1,083
  Goodwill Amortization                           -           -                            -
  Taxes Other Than Income Taxes                   672        (65)             -            607
                                               ------      -----           -----        ------
    Total Operating Expenses                   $5,789      $ (11)          $  -         $5,778
                                               ------      -----           -----        ------
Operating Income                               $1,362      $  11           $  -         $1,373
                                               ------      -----           -----        ------
Other Income and Deductions
  Interest Expense                             $ (464)     $  -            $ (76)       $ (540)
  Preferred and Preference Stock Dividends        (87)        -               50           (37)
  Other, net                                       49         88              11           148
                                               ------      -----           -----        ------
    Total Other Income and Deductions          $ (502)     $  88           $ (15)       $ (429)
                                               ------      -----           -----        ------

Income Before Income Taxes
  and Extraordinary Item                       $  860      $  99           $ (15)       $  944

Income Tax Expense                                350         40             (26)          364
                                               ------      -----           -----        ------
Income Before Extraordinary Item               $  510      $  59           $  11        $  580
                                               ======      =====           =====        ======

Income Before Extraordinary
  Item per Share                               $ 2.35
                                               ======

Income Before Extraordinary
  Item per Share - Diluted                     $ 2.34
                                               ======

Average Basic Shares Outstanding                216.9
                                               ======

Average Diluted Shares Outstanding              217.7
                                               ======


                                       10


            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                        (Millions Except Per Share Data)
                      FOR THE YEAR ENDED DECEMBER 31, 1998




                                       PECO      UNICOM
                                     Prior to   Prior to       Merger
                                      Merger     Merger      Pro Forma         Merger
                                     Pro Forma  Pro Forma    Adjustments     Pro Forma
                                     --------   --------     -----------      --------
                                                                  
Operating Revenues
 Electric                             $ 4,811    $ 7,151     $     (64)(8)     $11,898
 Gas                                      399       --              --             399
                                     --------   --------     ----------       --------
  Total Operating Revenues            $ 5,210    $ 7,151     $     (64)        $12,297
                                     --------   --------     ----------       --------
Operating Expenses
 Fuel and Energy Interchange          $ 1,752    $ 2,056     $     (64)(8)     $ 3,744
 Operation and Maintenance              1,253      2,032            --           3,285
 Depreciation and Amortization            643      1,083          (184)(7)       1,542
 Goodwill Amortization                    --         --             75 (9)          75
 Taxes Other Than Income Taxes            279        607            --             886
                                     --------   --------     ----------       --------
  Total Operating Expenses            $ 3,927    $ 5,778     $    (173)        $ 9,532
                                     --------   --------     ----------       --------
Operating Income                      $ 1,283    $ 1,373     $     109         $ 2,765
                                     --------   --------     ----------       --------
Other Income and Deductions
 Interest Expense                     $  (439)   $  (540)    $      --         $  (979)
 Preferred and Preference
  Stock Dividends                          --        (37)          (22)(10)        (59)
 Other, net                               (80)       148            11 (10)         79
                                     --------   --------     ----------       --------
  Total Other Income and Deductions   $  (519)   $  (429)    $     (11)        $  (959)
                                     --------   --------     ----------       --------
Income Before Income Taxes
  and Extraordinary Item              $   764    $   944     $      98         $ 1,806
Income Tax Expense                        285        364            73             722
                                     --------   --------     ----------       --------
Income Before Extraordinary Item      $   479    $   580     $      25         $ 1,084
                                     ========   ========     ==========       ========
 Preferred Stock Dividends            $    11    $    --     $     (11)(10)    $    --
                                     ========   ========     ==========       ========
Income Before Extraordinary
 Item per Share                                                                $  3.28
                                                                              ========
Income Before Extraordinary
 Item per Share - Diluted                                                      $  3.26
                                                                              ========
Average Basic Shares Outstanding                                                 330.8(6)
                                                                              ========
Average Diluted Shares Outstanding                                               332.2
                                                                              ========




                                      11


                  UNAUDITED PRO FORMA CONDENSED BALANCE SHEET
                                 (In Millions)
                              AS OF JUNE 30, 1999




                                                           PECO          PECO
                                             PECO     Securitization   Prior to
                                              As        Pro Forma       Merger
                                             Filed    Adjustments(1)  Pro Forma
                                           -------   ---------------- ----------
                                                             
         ASSETS
Utility Plant
  Plant                                    $ 7,549         $ -            $ 7,549
  Accumulated Provision for Depreciation     3,008           -              3,008
                                           -------         -----          -------
                                           $ 4,541         $ -            $ 4,541
  Nuclear Fuel, net                            297           -                297
                                           -------         -----          -------
                                           $ 4,838         $ -            $ 4,838
                                           -------         -----          -------
Current Assets
  Cash and Temporary Cash Investments      $   900         $(652)         $   248
  Accounts Receivable, net                     589           -                589
  Inventories, at average cost                 172           -                172
  Other Current Assets                         116           -                116
                                           -------         -----          -------
                                           $ 1,777         $(652)         $ 1,125
                                           -------         -----          -------
Deferred Debits and Other Assets
  Regulatory Assets                        $ 6,046         $ -            $ 6,046
  Goodwill                                     -             -                -
  Investments and Other Property, net          555           -                555
  Other                                        131           -                131
                                           -------         -----          -------
                                           $ 6,732         $ -            $ 6,732
                                           -------         -----          -------
  TOTAL                                    $13,347         $(652)         $12,695
                                           =======         =====          =======

       CAPITALIZATION AND LIABILITIES
Capitalization
  Common Stock Equity                      $ 1,688         $(177)         $ 1,511
  Preferred and Preference Stock               231           (37)             194
  Company Obligated Mandatorily
    Redeemable Preferred Securities            340          (212)             128
  Long-Term Debt                             6,092           -              6,092
                                           -------         -----          -------
                                           $ 8,351         $(426)         $ 7,925
                                           -------         -----          -------
Current Liabilities
  Notes Payable, Bank                      $   226         $(226)         $   -
  Accounts Payable                             358           -                358
  Other Current Liabilities                    700           -                700
                                           -------         -----          -------
                                           $ 1,284         $(226)         $ 1,058
                                           -------         -----          -------
Deferred Credits and Other Liabilities
  Deferred Income Taxes                    $ 2,355         $ -            $ 2,355
  Unamortized Investment Tax Credits           293           -                293
  Other                                      1,064           -              1,064
                                           -------         -----          -------
                                           $ 3,712         $ -            $ 3,712
                                           -------         -----          -------
  TOTAL                                    $13,347         $(652)         $12,695
                                           =======         =====          =======


                                       12






                                                     UNAUDITED PRO FORMA CONDENSED BALANCE SHEET
                                                                     (Millions)
                                                                  AS OF JUNE 30, 1999


                                                              UNICOM            UNICOM          UNICOM
                                                  UNICOM    Fossil Sale      Securitization    Prior to
                                                    As      Pro Forma         Pro Forma         Merger
                                                  Filed    Adjustments(2)    Adjustments(4)   Pro Forma
                                                 -------   --------------    --------------    --------
                                                                                   
     ASSETS
Utility Plant
  Plant                                          $28,245      $(3,423)          $    -          $24,822
  Accumulated Provision for Depreciation          15,662       (2,107)               -           13,555
                                                 -------      -------           -------         -------
                                                 $12,583      $(1,316)          $    -          $11,267
  Nuclear Fuel, net                                  856           -                 -              856
                                                 -------      -------           -------         -------
                                                 $13,439      $(1,316)          $    -          $12,123
                                                 -------      -------           -------         -------

Current Assets
  Cash and Temporary Cash Investments            $   739      $ 4,271           $  (326)        $ 4,684
  Accounts Receivable, net                         2,087           -               (695)          1,392
  Inventories, at average cost                       386         (141)               -              245
  Other Current Assets                                79           -                 -               79
                                                 -------      -------           -------         -------
                                                 $ 3,291      $ 4,130           $(1,021)        $ 6,400
                                                 -------      -------           -------         -------
Deferred Debits and Other Assets
  Regulatory Assets                              $ 4,433      $(2,765)          $    -          $ 1,668
  Goodwill                                            -            -                 -               -
  Investments and Other Property, net              2,763           -                 -            2,763
  Other                                               71          (49)               -               22
                                                 -------      -------           -------         -------
                                                 $ 7,267      $(2,814)          $    -          $ 4,453
                                                 -------      -------           -------         -------
    TOTAL                                        $23,997      $    -            $(1,021)        $22,976
                                                 =======      =======           =======         =======

     CAPITALIZATION AND LIABILITIES
Capitalization
  Common Stock Equity                            $ 5,101      $    -            $(1,021)        $ 4,080
  Preferred and Preference Stock                       2           -                 -                2
  Company Obligated Mandatorily
   Redeemable Preferred Securities                   350           -                 -              350
  Long-Term Debt                                   7,374           -                 -            7,374
                                                 -------      -------           -------         -------
                                                 $12,827      $    -            $(1,021)        $11,806
                                                 -------      -------           -------         -------
Current Liabilities
  Notes Payable, Bank                            $   412      $    -            $    -          $   412
  Accounts Payable                                   491           -                 -              491
  Other Current Liabilities                        1,963        1,332                -            3,295
                                                 -------      -------           -------         -------
                                                 $ 2,866        1,332           $    -          $ 4,198
                                                 -------      -------           -------         -------
Deferred Credits and Other Liabilities
  Deferred Income Taxes                          $ 3,732      $(1,352)          $    -          $ 2,380
  Unamortized Investment Tax Credits                 544          (47)               -              497
  Nuclear Decommissioning Liab. For
   Retired Plants                                  1,252           -                 -            1,252
  Other                                            2,776           67                -            2,843
                                                 -------      -------           -------         -------
                                                 $ 8,304      $(1,332)          $    -          $ 6,972
                                                 -------      -------           -------         -------
    TOTAL                                        $23,997           -            $(1,021)        $22,976
                                                 =======      =======           =======         =======


                                      13


              UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                 (In Millions)
                              AS OF JUNE 30, 1999





                                                PECO                 UNICOM
                                                Prior to             Prior to           Merger               Merger
                                                Merger               Merger            Pro Forma           Pro Forma
                                                Pro Forma            Pro Forma        Adjustments           Balance
                                              ----------           ----------        ------------          ----------
  ASSETS
                                                                                               
Utility Plant
 Plant                                        $    7,549           $   24,822          $(13,555) (7)       $   18,816
 Accumulated Provision for Depreciation            3,008               13,555           (13,555) (7)            3,008
                                              ----------           ----------          --------            ----------
                                              $    4,541           $   11,267          $    -              $   15,808
 Nuclear Fuel, net                                   297                  856               -                   1,153
                                              ----------           ----------          --------            ----------
                                              $    4,838           $   12,123          $    -              $   16,961
                                              ----------           ----------          --------            ----------
Current Assets
 Cash and Temporary Cash Investments          $      248           $    4,684          $   (850) (5)       $    4,082
 Accounts Receivable, net                            589                1,392               -                   1,981
 Inventories, at average cost                        172                  245               -                     417
 Other Current Assets                                116                   79               -                     195
                                              ----------           ----------          --------            ----------
                                              $    1,125           $    6,400          $   (850)           $    6,675
                                              ----------           ----------          --------            ----------
Deferred Debits and Other Assets
 Regulatory Assets                            $    6,046           $    1,668          $    -              $    7,714
 Goodwill                                            -                    -               3,006 (7)             3,006
 Investments and Other Property, net                 555                2,763               -                   3,318
 Other                                               131                   22               -                     153
                                              ----------           ----------          --------            ----------
                                              $    6,732           $    4,453          $  3,006            $   14,191
                                              ----------           ----------          --------            ----------
 TOTAL                                        $   12,695           $   22,976          $  2,156            $   37,827
                                              ==========           ==========          ========            ==========

      CAPITALIZATION AND LIABILITIES
Capitalization
 Common Stock Equity                          $    1,511           $    4,080          $  1,506 (5,7)      $    7,097
 Preferred and Preference Stock                      194                    2                 -                   196
 Company Obligated Mandatorily
    Redeemable Preferred Securities                  128                  350                 -                   478
 Long-Term Debt                                    6,092                7,374                 -                13,466
                                              ----------           ----------          --------            ----------
                                              $    7,925           $   11,806          $  1,506            $   21,237
                                              ----------           ----------          --------            ----------
Current Liabilities
 Notes Payable, Bank                          $        -           $      412          $    650 (5)        $    1,062
 Accounts Payable                                    358                  491                                     849
 Other Current Liabilities                           700                3,295                 -                 3,995
                                              ----------           ----------          --------            ----------
                                              $    1,058           $    4,198          $    650            $    5,906
                                              ----------           ----------          --------            ----------
Deferred Credits and Other Liabilities
 Deferred Income Taxes                        $    2,355           $    2,380          $      -            $    4,735
 Unamortized Investment Tax Credits                  293                  497                 -                   790
 Nuclear Decommissioning Liab. For
    Retired Plants                                     -                1,252                 -                 1,252
 Other                                             1,064                2,843                 -                 3,907
                                              ----------           ----------          --------            ----------
                                              $    3,712           $    6,972          $      -            $   10,684
                                              ----------           ----------          --------            ----------
  TOTAL                                       $   12,695           $   22,976          $  2,156            $   37,827
                                              ==========           ==========          ========            ==========


                                      14


                                       15


Notes to Unaudited Pro Forma Combined Condensed Financial Statements


  1.  Represents  the use of the  remaining  balance  of the  proceeds  from the
securitization of stranded costs to repurchase approximately four million shares
of  PECO  Common  Stock,  PECO  obligated   mandatorily   redeemable   preferred
securities,  preferred stock and short-term  debt. This adjustment also reflects
the effects of PECO's  securitization of its stranded costs on its statements of
income as a net  increase  to interest  expense,  decrease to interest on PECO's
obligated mandatorily  redeemable preferred securities and related aggregate tax
benefit.

  2.  Reflects  the  accounting  impacts  related  to the  sale  of  the  fossil
generating  plants.  The  sale is  expected  to  produce  an  after-tax  gain of
approximately $1.7 billion,  after settling commitments  associated with certain
coal  contracts,  recognition  of  employee-related  costs and  funding  certain
environmental  initiatives.  The gain on the sale will be  utilized  to  recover
certain  regulatory assets and, as a result,  the sale is not expected to have a
significant impact on Unicom net income in 1999.

  3. Reflects the effects of the sale of ComEd's fossil generating  plants.  The
increase in energy interchange  expense reflects the net incremental energy cost
that ComEd would have incurred under transitional  power purchase  agreements to
purchase  replacement  power  in the  absence  of its own  generating  capacity.
Additionally,  "Other,  net"  reflects  interest  income  related  to the unused
proceeds  from the sale of the fossil  generating  plants.  The Unicom Pro Forma
Adjustments  include  increased  regulatory  asset  amortization  because  those
adjustments  on a  prior-to-merger,  pro forma  basis  would  result in  ComEd's
earnings  exceeding the earnings cap provisions of the Illinois Public Utilities
Act.


                                       16

     Notes to Unaudited Pro Forma Combined Condensed Financial Statements
                                  (CONTINUED)

  4. Reflects  Unicom's  expected  obligation to purchase,  at prevailing market
prices,  approximately  six million  shares of Unicom  Common Stock prior to the
closing of the Merger  Transaction  and the 20.1 million shares of Unicom Common
Stock that are subject to certain forward purchase contracts and are expected to
settle no later than February  2000. In addition,  reflects  adjustments  to net
interest expense and preferred and preference stock dividends related to the use
of securitization proceeds.

  5. Reflects cash consideration paid to PECO and Unicom common shareholders who
choose the cash  election,  subject to proration.  The amount of the  adjustment
assumes a payment  of $750  million  at a cash price of $45.00 per share to PECO
shareholders  and a payment of $750  million at a cash price of $42.75 per share
to Unicom  shareholders.  PECO's pro forma cash  balance as of June 30, 1999 was
insufficient  to fully  fund  this  cash  election.  Accordingly,  for pro forma
purposes,  it was assumed that PECO would borrow $650 million from its available
revolving  credit facility and that this borrowing  would be repaid  immediately
following the Merger Transaction. The amount of actual borrowing, if any, at the
time of consummation of the Merger Transaction will depend on PECO's actual cash
available at that time.


                                       17

     Notes to Unaudited Pro Forma Combined Condensed Financial Statements
                                  (CONTINUED)

  6.  Reflects  issuance of Newco shares in exchange for PECO and Unicom  Common
Stock net of shares which were  exchanged  for cash or  repurchased  by PECO and
Unicom as follows:




                                                       As of June 30, 1999
                                               ------------------------------------
                                                        (Shares in 000's)
                                                                            Newco
                                                 PECO         Unicom      Pro Forma
                                               --------       ---------   ---------
                                                                 
Actual shares outstanding at June 30, 1999     186,603        217,287            --

Shares exchanged for cash or repurchased-
 Notes (1), (4) and (5)                        (20,900)       (43,487)           --
                                               -------        -------

Remaining shares to be exchanged               165,703        173,800            --

Exchange factor                                    1.0            .95
                                               -------        -------

Estimated Share consideration                  165,703        165,110       330,813





  7. A pro forma  adjustment  has been made to recognize  goodwill in connection
with  the  Merger.   The  goodwill   represents   the  excess  of  the  purchase
consideration  of $6.3 billion,  including PECO's  estimated  transaction  costs
resulting  from the  Merger,  over the  assumed  value of  Unicom's  assets  and
liabilities at June 30, 1999. The  adjustment  reflects the share  consideration
equal to approximately  165.1 million shares of Newco Common Stock at a price of
$38.18 based on the average closing price of PECO Common Stock between September
16, 1999 and September 29, 1999. PECO's transaction costs of approximately $32.5
million  represent the  estimated  costs to be incurred for the Merger that meet
the requirements for inclusion in the purchase price.  Actual goodwill  recorded
upon   consummation  will  consider  the  fair  value  of  Unicom's  assets  and
liabilities  at that future  date,  including  the fair value  determination  of
nuclear  generating  stations,  and may  differ  significantly  from the  amount
recorded in these pro forma statements. The pro forma adjustment also relates to
the  elimination  of  accumulated  depreciation  reflected on Unicom's  books in
accordance  with  purchase  accounting as prescribed by GAAP. As a result of the
increased  merger pro forma common stock  equity  balance,  the merger pro forma
adjustments  include a reversal of the increased  regulatory asset  amortization
related to the Unicom Pro Forma Adjustments discussed in Note 3.


                                       18

     Notes to Unaudited Pro Forma Combined Condensed Financial Statements
                                  (CONCLUDED)




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

  9. Reflects amortization of goodwill over a 40-year period.

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


                                   SIGNATURES




Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.




                                                 PECO ENERGY COMPANY


                                                 \s\ Jean H. Gibson
                                                  -----------------------
                                                  Vice President & Controller

October 12, 1999