Electric Rates

Take control of your electric bill by choosing the pricing plan that is right for you. UniSource Energy Services offers four unique plans that give residential customers the ability to reduce their bills by changing their electricity usage habits. With these pricing plans, you can choose to save energy, lower your bill and have a positive impact on the environment.

Residential pricing plans:


Residential Service

Pay bills based on your total monthly electric use, regardless of when it occurs.
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Time-of-Use (TOU)

Shift a majority of your usage to off-peak hours and reduce your monthly bill.
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Pay lower energy rates plus a charge for your highest hourly on-peak usage.

Demand TOU

Combines Time-of-Use and Demand rates to maximize your savings opportunities.

Current Plans

Notice to Applicants

Upon request of the Customer, either at the time of application or after, the Company will use its best efforts to assist the Customer in choosing an appropriate Rate. However, upon application for service or upon request for assistance, the Applicant or the Customer will elect the applicable Rate best suited to his requirements. The Company may assist in making this election, but will not be held responsible for notifying the Customer of the most favorable Rate and will not be required to refund the difference in charges under different Rates. The Customer is solely responsible for selecting the Rate the Customer believes is appropriate. If no Rate is selected; the Customer will be placed on the most common Rate for the class of service and the Company will not be liable to refund the difference in charges had the Customer been placed on different Rates.

F - Frozen, not available to new customers, including current customers who move.

No. PDF Description
101 ERRES Residential Service (ERRES)
102 ERREST Residential Service Time-of-Use (ERREST)
103 ERRESD Residential Service Demand (ERRESD)
104 ERRESDT Residential Service Demand Time-of-Use (ERRESDT)
201 EGSGS Small General Service (EGSGS)
202 EGSGST Small General Service Time-of-Use (EGSGST)
203 EGSGSD Small General Service Demand (EGSGSD)
204 EGSGSDT Small General Service Demand Time-of-Use (EGSGSDT)
210 EGMGS Medium General Service (EGMGS)
211 EGMGST Medium General Service Time-of-Use (EGMGST)
212 EGMGSST Time-of-Use for Medium General Service Schools (EGMGSST)
220 EGLGS Large General Service (EGLGS)
221 EGLGST Large General Service Time-of-Use (EGLGST)
222 EGLGSST Time-of-Use for Large General Service Schools (EGLGSST)
301 EILPS Large Power Service (EILPS)
302 EILPST Large Power Service Time-of-Use (EILPST)
501 EGLTG Lighting Service (EGLTG)
601 EGIPS-F Interruptible Power Service (Frozen)
701 R-1 Rider-1 Purchased Power Fuel Adjustor Clause (PPFAC)
702 R-2 Rider-2 Demand Side Management
703 R-3 Rider-3 Market Cost of Comparable Conventional Generation (MCCCG) Calculation as Applicable to Rider-4 NM-PRS
704 R-4 Rider-4 Net Metering for Certain Partial Requirements Service (NM-PRS)
705 R-5 Rider-5 Electric Service Solar Rider (Bright Arizona Community Solar™)
706 R-6 Rider-6 Renewable Energy Standard and Tariff (REST) Surcharge REST-TS1 Renewable Energy Program Expense Recovery
707 R-7 Rider-7 Customer Self-Directed Renewable Energy Option REST-TS2 Renewable Energy Standard Tariff
708 R-8 Rider R-8 Lost Fixed Cost Recovery (LFCR)
709 R-9 Rider R-9 Transmission Cost Adjustor (TCA)
712 R-12 Interruptible Power Service
713 R-13 Economic Development Rate
801 Statement of Charges UNS Electric Statement of Charges
802 Bill Estimation Bill Estimation Methodologies
803 Curtailment Plan Guidelines for Electric Load Curtailment
804 QF-A Rates for Power and Energy Transactions With Qualifying Facilities That Receive Full Requirements 100 kW or Less (QF-A)
805 QF-B Rates for Power and Energy Transactions With Qualifying Facilities That Receive Partial Requirements 100 kW or Less (QF-B)
806 QF-C Rates for Power and Energy Transactions With Qualifying Facilities That Receive Optional Service Over 100 kW (QF-C)

Tax Information

Taxes and Assessments

New Rates

New electric rates will help pay for system upgrades needed to maintain safe, reliable service.
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Stable Rates

UES' rates have been very stable, rising at less than the rate of inflation over the last two decades.

Rules & Regulations

No. PDF Description
900 Table of Contents Table of Contents
901 Section 1 Applicability of Rules and Regulations and Description of Service
902 Section 2 Definitions
903 Section 3 Establishment of Service
904 Section 4 Minimum Customer Information Requirements
905 Section 5 Master Metering
906 Section 6 Service Lines and Establishments
907 Section 7 Line Extensions
908 Section 8 Provision of Service
909 Section 9 Character of Service – Voltage, Frequency and Phase
910 Section 10 Meter Reading
911 Section 11 Billing and Collections
912 Section 12 Termination of Service
913 Section 13 Reconnection of Service
914 Section 14 Administrative and Hearing Requirements