February 6, 2001
NYSE:STR

Contact: R. Curtis Burnett
Business: (801) 324-5132

QUESTAR EARNINGS TELECONFERENCE/WEBCAST
SCHEDULED FOR WEDNESDAY, FEB. 14

SALT LAKE CITY — Questar Corp. (NYSE:STR) announced today it will hold an analyst conference call and Webcast to review financial results for full-year and fourth-quarter 2000 and management's outlook for 2001. The call will be held Wednesday, Feb. 14, 2001, at 9:30 a.m. Eastern Time, 7:30 a.m. Mountain Time.

Fourth-quarter and full-year earnings will be released prior to the call on Tuesday, Feb. 13.

Don Cash, Questar chairman and CEO, Stephen E. Parks, chief financial officer, and Keith O. Rattie, new Questar president and COO, will speak during the conference call.

The call will be available live in a listen-only mode via telephone or the Internet. To listen via telephone, dial 1-212-896-6070 five to 10 minutes prior to the teleconference. The Internet site is www.questar.com.

A telephone replay of the teleconference will be available through Feb. 21 at 1-800-633-8284, #17540136. The presentation also will be available on the Questar Web site under Financial Information/Audio Archives.

Questar is a $2.5 billion diversified natural gas company headquartered in Salt Lake City. Through subsidiaries, it engages in energy development and production; gas gathering and processing; wholesale gas, electricity and liquids trading; retail energy services; interstate gas transmission and storage; retail gas distribution; and information systems and technologies.

# # #