EXHIBIT 99 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER RELATING TO A PERIODIC REPORT CONTAINING FINANCIAL STATEMENTS I, Robert J. Chaney, Chief Executive Officer, and I, John C. Barney, Chief Financial Officer, of UGI Utilities, Inc., a Pennsylvania corporation (the "Company"), hereby certify that: (1) The Company's periodic report on Form 10-Q for the period ended March 31, 2003 (the "Form 10-Q") fully complies with the requirements of Section 15(d) of the Securities Exchange Act of 1934, as amended; and (2) The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company. * * * CHIEF EXECUTIVE OFFICER CHIEF FINANCIAL OFFICER /s/ Robert J. Chaney /s/ John C. Barney - ---------------------------------- ---------------------------------- Robert J. Chaney John C. Barney Date: May 15, 2003 Date: May 15, 2003 A signed original of this written statement required by Section 906 has been provided to UGI Utilities, Inc. and will be retained by UGI Utilities, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.