In Oncorâs territory around Dallas and Fort Worth, the average price on a 12-month retail contract rose from 9.2 cents a kilowatt hour to 10 cents. The largest increase was in AEPâs Central Texas zone, where prices on one-year contracts rose to an average of 11.1 cents a kilowatt hour. John Fainter, president of the electric companies association, said with the hike in gas prices, power companies had little choice but to raise rates.