<Page> EXELON(SM) C/O EQUISERVE TRUST COMPANY N.A. P.O. BOX 8694 EDISON, NJ 08818-8694 YOUR VOTE IS IMPORTANT. PLEASE VOTE IMMEDIATELY. VOTE-BY-INTERNET OR VOTE-BY-TELEPHONE 1. Log on to the Internet and go to 1. Call toll-free http://www.eproxyvote.com/exc 1-877-PRX-VOTE (1-877-779-8683) IF YOU VOTE OVER THE INTERNET OR BY TELEPHONE, PLEASE DO NOT MAIL YOUR CARD. DETACH HERE IF YOU ARE RETURNING YOUR PROXY CARD BY MAIL - ------------------------------------------------------------------------------- /X/ PLEASE MARK VOTES AS IN THIS EXAMPLE. The Board of Directors recommends a vote FOR proposals 1, 2, 3, 4, 5, 6, and 7. EXELON FOR AGAINST ABSTAIN --- ------- ------- 1. Approval of Share Issuance / / / / / / 2. Election of Directors (01) E. A. Brennan (02) B. DeMars (03) N. A. Diaz (04) J.W. Rowe (05) R. Rubin FOR WITHHELD --- -------- / / / / ______________________________________ / / For all nominees except as noted above FOR AGAINST ABSTAIN --- ------- ------- 3. Approval of Amendment to Amended and Restated Articles of Incorporation / / / / / / 4. Ratification of Independent Accountants / / / / / / 5. Approval of Exelon Corporation 2006 Long-Term Incentive Plan / / / / / / 6. Approval of Exelon Corporation Employee Stock Purchase Plan for Unincorporated Subsidiaries / / / / / / 7. Approval to Adjourn or Postpone Annual Meeting / / / / / / Change of Address/Comments on Reverse Side Please sign this proxy exactly as name appears hereon. When shares are held by joint tenants, both should sign. When signing as attorney, administrator, trustee or guardian, please give full title as such. Signature: ________________________________ Date: _____________ Signature: ________________________________ Date: _____________ <Page> EXHIBIT 99.1 ADMISSION TICKET PLEASE DETACH AND BRING THIS TICKET ALONG WITH A PHOTO I.D. FOR ADMISSION TO THE EXELON CORPORATION ANNUAL SHAREHOLDERS MEETING Friday July 22, 2005 9:30 A.M. PECO Energy Headquarters 2301 Market Street Philadelphia, Pennsylvania THIS TICKET IS NOT TRANSFERABLE DETACH HERE - -------------------------------------------------------------------------------- 2005 COMMON STOCK PROXY EXELON CORPORATION THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON Friday, July 22, 2005 at 9:30 A.M. at PECO Energy Headquarters 2301 Market Street Philadelphia, Pennsylvania RANDALL E. MEHRBERG and KATHERINE K. COMBS, or either of them with power of substitution, are hereby appointed proxies to vote as specified all shares of Common Stock which the shareholder(s) named on the reverse side is entitled to vote at the above annual meeting or at any adjournment thereof, and in their discretion to vote upon all other matters as may properly be brought before the meeting. EquiServe Trust Company, N.A., as Custodian under the Dividend Reinvestment and Employee Stock Purchase Plan, and Exelon Corporation, as Custodian for the 401(k) Employee Savings Plan, are hereby authorized to execute a proxy with identical instructions for any shares of common stock held for the benefit of shareholder(s) named on the reverse side. PLEASE SIGN AND DATE ON THE REVERSE SIDE AND MAIL PROMPTLY IN THE ENCLOSED POSTAGE PAID ENVELOPE OR OTHERWISE TO P.O. BOX 8647, EDISON, NEW JERSEY, 08818-8647. HAS YOUR ADDRESS CHANGED? DO YOU HAVE ANY COMMENTS? _____________________________________ _____________________________________ _____________________________________ _____________________________________ _____________________________________ _____________________________________