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Purchased Gas Adjustor

The Purchased Gas Adjustor (PGA) is a usage-based charge or credit that reflects changes to the costs of natural gas. UniSource passes along these costs without any markup, and earns no profit through the PGA. The PGA is periodically reviewed and approved by the Arizona Corporation Commission (ACC).

How will the PGA affect my monthly natural gas bills?

The impact of the PGA varies with usage and the current PGA rate, which is adjusted monthly. The current PGA rate is listed in our gas rates section here.

In July 2022, the ACC also approved a temporary PGA surcharge of $0.04150 per therm from August 1, 2022 through November 30, 2024. This temporary surcharge is designed to help cover costs related to higher wholesale natural gas prices, which increased by more than 200 percent over the previous two years. In addition, extreme weather events have contributed to record high natural gas prices.

The temporary PGA surcharge is expected to increase the monthly bills of residential customers with average usage by about $1.80 every month. The impact of this temporary surcharge will vary based on usage.

How does the PGA appear on my monthly bill?

The PGA appears on your bill under the heading “Gas Supply Charges” as the “Cost of Natural Gas” charge or credit.