QuickLinks -- Click here to rapidly navigate through this documentExhibit 24.
POWER OF ATTORNEY
We, the undersigned directors of Questar Corporation, hereby severally constitute Keith O. Rattie and S. E. Parks, and each of them acting alone, our true and lawful attorneys, with full power to them and each of them to sign for us and in our names in the capacities indicated below, the Annual Report on Form 10-K for 2004 and any and all amendments to be filed with the Securities and Exchange commission by Questar Corporation, hereby ratifying and confirming our signatures as they may be signed by the attorneys appointed herein to the Annual Report on Form 10-K for 2004 and any and all amendments to such Report.
Witness our hands on the respective dates set forth below.
Signature
| | Title
| | Date
|
---|
| | | | |
/s/ KEITH O. RATTIE Keith O. Rattie | | Chairman of the Board, President, and Chief Executive Officer Director | | February 8, 2005 |
/s/ PHILLIPS S. BAKER, JR. Phillips S. Baker, Jr. | | Director | | February 8, 2005 |
/s/ TERESA BECK Teresa Beck | | Director | | February 8, 2005 |
/s/ R. D. CASH R. D. Cash | | Director | | February 8, 2005 |
Patrick J. Early | | Director | | February 8, 2005 |
/s/ L. RICHARD FLURY L. Richard Flury | | Director | | February 8, 2005 |
/s/ JAMES A. HARMON James A. Harmon | | Director | | February 8, 2005 |
/s/ ROBERT E. KADLEC Robert E. Kadlec | | Director | | February 8, 2005 |
/s/ ROBERT E. MCKEE III Robert E. McKee III | | Director | | February 8, 2005 |
/s/ GARY G. MICHAEL Gary G. Michael | | Director | | February 8, 2005 |
/s/ M. W. SCOGGINS M. W. Scoggins | | Director | | February 8, 2005 |
/s/ HARRIS H. SIMMONS Harris H. Simmons | | Director | | February 8, 2005 |
/s/ C. B. STANLEY C. B. Stanley | | Director | | February 8, 2005 |
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POWER OF ATTORNEY