Tulsa-based Public Service Co. of Oklahoma normally adjusts its fuel costs at the end of May, said Stan Whiteford, spokesman for the utility.
“We don't have any plans to make any changes in fuel-cost charges at this time,” Whiteford said.
Oklahoma Natural Gas, the state's largest natural gas utility, said its fuel-cost charge will increase by 12 cents per dekatherm beginning Jan. 7. The new fuel charge will be $5.05 per dekatherm. ONG adjusts its fuel-cost charges each quarter, said spokeswoman Cherokee Ballard.
Ballard said ONG tries to balance its fuel costs with customer demand. The increase came from higher costs the utility incurred in the last quarter.
Under Oklahoma Corporation Commission rules, utilities are not allowed to profit on the fuel-cost portion of customer bills. Fuel costs include the price of fuel, transport and storage costs, as well as contract fees to ensure supply.