UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM U-6B-2

                           CERTIFICATE OF NOTIFICATION

Certificate is filed by Exelon Corporation (Exelon), Commonwealth Edison Company
(ComEd), PECO Energy Company (PECO), Exelon Business Services Company (BSG), and
Exelon Enterprises Company (Enterprises).

This certificate provides notice that the above companies have issued, renewed
or guaranteed the security or securities described herein which issue, renewal
or guaranty was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.   Type of securities ("draft", "promissory note"): Transition Bonds issued by
     PECO Energy Transition Trust (PETT) (a subsidiary of PECO).
2.   Issue, renewal or guaranty: Refinancing.
3.   Principal amount of each security: $805,460,000.
4.   Rate of interest per annum of each security: 6.52%.
5.   Date of issue, renewal or guaranty of each security: March 1, 2001.
6.   If renewal of security, give date of original issue: March 1, 1999.
7.   Date of maturity of each security (in the case of demand notes, indicate
     "demand"): 9/1/10.
8.   Name of the person to whom each security was issued, renewed or guaranteed:
     Various.
9.   Collateral given with each security:
     1.)  All of PETT's right, title and interest in and to the intangible
          transition property authorized by the qualified rate orders and sold
          by PECO to PETT under the intangible transition property sale
          agreement;
     2.)  Collections of intangible transition charges arising from the
          intangible transition property authorized by the qualified rate orders
          that are remitted to PETT under the master servicing agreement among
          PETT, PECO and any other issuers of transition bonds that meet certain
          criteria;
     3.)  PETT's rights under the intangible transition property sale agreement,
          except for specified provisions for indemnification of PETT;
     4.)  PETT's rights under the master servicing agreement, except for
          specified provisions for indemnification of PETT; and
     5.)  Specified bank accounts of PETT and all amounts or investment property
          in these accounts, other than cash amounts payable to PETT or PECO.
10.  Consideration given for each security: Cash.
11.  Application of proceeds for each security: Refinance Series 1999-A
     Transition Bonds.
12.  Indicate by a check after the applicable statement below whether the issue,
     renewal or guaranty of each security was exempt from the provisions of
     section 6(a) because of
     a.   the provisions contained in the first sentence of section 6(b): [ ]
     b.   the provisions contained in the fourth sentence 6(b): [ ]
     c.   the provisions in any rule of the Commission other than Rule U-48: [X]
13.  If the security or securities were exempt from the provisions of section
     6(a) by virtue of the first sentence of section 6(b), give the figures
     which indicate that the security or securities aggregate (together with all
     other then outstanding notes and drafts of a maturity of nine months or
     less, exclusive of days of grace, as to which such company is primarily or
     secondarily liable) not more than 5 per centum of the principal amount and
     par value of the other securities of such company then outstanding. (Demand
     notes, regardless of how long they may have been outstanding, shall be
     considered as maturing in not more than nine months for the purpose of the
     exemption from Section 6(a) of the Act granted by the first sentence of
     Section 6(b): Not Applicable.
14.  If the security or securities are exempt from the provisions of section
     6(a) because of the fourth sentence of section 6(b), name the security
     outstanding on January 1, 1935, pursuant to the terms of which the security
     or securities herein described have been issued: Not Applicable.




15.  If the securities are exempt from the provisions of section 6(a) because of
     any rule of the Commission other than Rule U-48 designate the rule under
     which exemption is claimed: Rule 52(a).


                                          Exelon Corporation


                                          By:/s/ J. Barry Mitchell
                                          ------------------------
                                          Vice President and Corporate Treasurer

Dated May 30, 2001