Exhibit 23.01

                         Consent of Independent Auditors

We consent to the reference to our firm under the caption "EXPERTS" in the
Registration Statement (Form S-3) and related Prospectus of Questar Gas Company
for the registration of $100,000,000 medium-term notes and to the incorporation
by reference therein of our report dated March 6, 2001, with respect to the
financial statements of Questar Gas Company included in its Annual Report (Form
10-K) for the year ended December 31, 2000, filed with the Securities and
Exchange Commission.

                                       /s/ Ernst & Young

Salt Lake City, Utah
September 5, 2001