Questar Corporation is a natural gas-focused energy company based in Salt Lake City, Utah in the Rocky Mountains.
Questar's three major lines of business
- retail gas distribution,
- interstate gas transportation
- gas production —
are conducted through its principal subsidiaries: Questar Gas, Questar Pipeline and Wexpro.
Wexpro is an oil and natural gas producer in the Rocky Mountains.
Previously known as **Mountain Fuel Supply Company ** the company reorganized under a holding company in 1984 and is publicly traded as Questar Corporation. Mountain Fuel Supply formally changed its name to Questar Gas Company in 1998.