How to read my gas bill

UES' gas rates reflect the cost of providing safe, reliable service to our customers. They also reflect the complexity of that task, with fixed fees, usage-based charges and surcharges that can be difficult to understand. The following summary offers explanations for the terms you'll find on your monthly bill, including links to details posted elsewhere on this website.

Jump to a section:   Delivery Services  |  Gas Supply Charges  |  Energy Efficiency Charges  |  Taxes and Assessments

Delivery Services

UES Bill Sample 1

The charges listed in this section of your bill recover the cost of delivering natural gas to customers. These charges reflect the cost of pipelines, regulator stations, monitoring equipment and other infrastructure; employees and contractors who install, operate and maintain that equipment; and other necessary business expenses.

The Arizona Corporation Commission (ACC) sets rates that divide responsibility for these costs among different types of customers – including residential, commercial and industrial users – based on typical consumption patterns. Our natural gas rates are designed to recover the appropriate portion of these costs from each customer group through a combination of fixed fees and usage-based charges.

Gas Supply Charges

UES Bill Sample 2Gas supply charges recover the cost of natural gas purchased on behalf of customers. This usage-based charge is updated monthly through Purchased Gas Adjustor (PGA) credits and charges that reflect changes in natural gas prices.

Energy Efficiency Charges

UES Bill Sample 3UES is using more renewable power and helping customers save energy. Some of the costs associated with these efforts are recovered through usage-based surcharges approved by the ACC and listed in this section of your bill.

Taxes and Assessments

UES Bill Sample 4The charges on your bill are subject to government taxes and fees. UES forwards all taxes and fees to the appropriate authorities.


The Purchased Gas Adjustor, or PGA, is a usage-based credit or charge that reflects changes in the costs of natural gas. UES passes along these costs without any markup and earns no profit through the PGA.

Read more about Purchased Gas Adjustor

DSM Surcharge

The Demand Side Management, or DSM, charge is a monthly, usage-based charge established by the Arizona Corporation Commission to pay for cost-effective energy efficiency programs.

Read more about Demand Side Management Surcharge

LFCR Charge

The Lost Fixed Cost Recovery, or LFCR, surcharge helps ensure that energy efficiency and renewable power projects don't compromise UES' ability to maintain safe, reliable service. Natural gas and electric customers pay separate LFCR charges. Read more about Lost Fixed Cost Recovery Charge