The corporation commission approved a settlement to allow an increase in base revenue of $54.5m and set Oklahoma Natural’s authorized return on equity at 10.5%. Several expenses that currently appear on customers’ bills as separate line-item charges will be moved into base rates, reducing the rate increase to a net amount of approximately $26m.

The settlement approved by the corporation commission was negotiated by Oklahoma Natural Gas, the corporation commission’s public utility division, the office of the Oklahoma Attorney General and the Oklahoma Industrial Energy Consumers organizations.

Roger Mitchell, president of Oklahoma Natural Gas, said: “This agreement allows us to continue to invest in our system and maintain the high standards of service and reliability that our customers have experienced for more than a century. We appreciate the constructive manner in which all of the parties to this rate case worked together to reach this agreement.”

The company estimates that a typical residential consumer may experience an increase of $3.95 per month from this rate case. However, declining natural gas costs potentially could offset the higher charges for delivery. Low-income customers (those who qualify for federal energy assistance) will experience no increase.

As a result of the new rates, residential customers who use 50 dekatherms or more of natural gas per year will pay a fixed charge of $26.75 per month for Oklahoma Natural’s delivery service, plus the cost of the natural gas, taxes and miscellaneous fees.

Customers using less than 50 dekatherms per year of natural gas will pay a fixed charge of $11.20 per month and $3.7323 per dekatherm for delivery, in addition to the cost of the gas, taxes and fees.