How does UES charge for gas?
The cost of gas is included in both the Basic Cost of Service rate, which remains the same each month, and the Purchased Gas Adjustment (PGA), which varies according to a formula based on the average cost of gas over the previous 12 months. If these charges fail to recover the full cost of gas, UES can ask the Arizona Corporation Commission (ACC) to add a third charge—the PGA Surcharge—to customers’ bills to recover the remainder of its gas costs.