An $11.9 million rate increase for Mountain Fuel Supply Co. has received tentative approval from the Utah Public Service Commission.

A formal hearing on the request has been scheduled for Feb. 22, 9 a.m., in the commission hearing room, 160 E. 300 South, in the Heber M. Wells Building.Mountain Fuel is seeking a pass-through rate increase to recover the cost of gas purchases made during the past six months. Under commission rules, Mountain Fuel is required to submit a pass-through filing every six months. Based on the filing, rates are adjusted either up or down, depending on the cost of natural gas purchases used by the company during the affected period of time.

Mountain Fuel recently received approval for a minimal $78,000 rate increase as the result of the company's first full rate hearing in more than five years. The company recently petitioned the commission for rehearing but that request was denied. The company has not yet indicated whether it will file an appeal with the Utah Supreme Court.

The Utah Division of Public Utilities has reviewed Mountain Fuel's pass-through request and recommended it be tentatively approved. The division regularly reviews rate requests for the commission and makes recommendations. The Utah Committee of Consumer Services has requested permission to intervene and will present testimony opposing the amount of the pass-through at the February hearing. The committee represents small business, residential and agricultural consumers in hearings before the commission.