1 EXHIBIT 24.1 POWER OF ATTORNEY We, the undersigned officers and directors of Chesapeake Energy Corporation (hereinafter, the "Company"), hereby severally constitute and appoint Aubrey K. McClendon, Tom L. Ward and Marcus C. Rowland, and each of them, severally, our true and lawful attorneys-in-fact and agents, each with full power to act without the other and with full power of substitution and resubstitution, to sign for us, in our names as officers or directors, or both, of the Company, and file with the Securities and Exchange Commission and any state securities regulatory board or commission any documents relating to the securities offered pursuant to this Registration Statement on Form S-8, including any amendments to this Registration Statement on Form S-8 or otherwise (including post-effective amendments), granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and to perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as each of us might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their substitutes, may lawfully do or cause to be done by virtue hereof. DATED this 16th day of August, 2001 <Table> /s/ Aubrey K. McClendon /s/ Tom L. Ward - ------------------------------------------ -------------------------------------- Aubrey K. McClendon, Chairman of the Tom L. Ward, President, Chief Board and Chief Executive Operating Officer and Director Officer (Principal Executive Officer) (Principal Executive Officer) /s/ Marcus C. Rowland /s/ Michael A. Johnson - ------------------------------------------ -------------------------------------- Marcus C. Rowland, Executive Michael A. Johnson, Senior Vice President and Chief Vice President - Accounting Financial Officer (Principal (Principal Accounting Officer) Financial Officer) /s/ E.F. Heizer, Jr. /s/ Breene M. Kerr - ------------------------------------------ -------------------------------------- E.F. Heizer, Jr., Director Breene M. Kerr, Director /s/ Shannon T. Self /s/ Frederick B. Whittemore - ------------------------------------------ -------------------------------------- Shannon T. Self, Director Frederick B. Whittemore, Director </Table>