SALT LAKE CITY — Questar Gas Wednesday asked the Public Service Commission of Utah to reduce natural gas rates by $13.3 million.

If approved, the rate cut will lower the typical homeowner’s annual bill by about $11.44 per year, or 1.68 percent, beginning Sept. 1.

“The price we pay to buy gas for our customers is about as low as it’s been in a decade,” said Craig Wagstaff, executive vice president and chief operating officer for Questar Gas. “Abundant supplies of natural gas nationwide have resulted in an oversupply. This is good news for consumers, and once again we’re able to lower our rates, which are already among the lowest in the U.S.”

Wagstaff cautioned, however, that natural gas prices can fluctuate with changes in supply and demand.