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 and small commercial customers the ability to reduce their bills by changing their energy usage habits. With these pricing plans, you can choose to save energy and lower your bill.

Two of the plans include time-of-use rates that offer discounts for usage during off-peak hours. And two of the plans pair reduced energy charges with a “demand” charge that rewards customers who can limit their concurrent use of large appliances during on-peak hours.

No action is required of customers who want to stay on their current pricing plan.

Residential pricing plans:

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Residential Lifestyle Calculator

Which pricing plan should you consider? Answer a few questions to find out which plan might be right for you.
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Time-of-Use (TOU)

Shift a majority of your usage to off-peak hours and reduce your monthly bill.

Peak Demand

Pay lower energy rates plus a charge for your highest hourly on-peak usage.
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Demand TOU

Combines demand and time-of-use components to maximize your savings opportunities.
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Pay bills based on your total monthly electric use, regardless of when it occurs.

Residential pricing plan comparison

TOU  Peak Demand Demand TOU Basic
 Basic Service Charge $12 $12 $12 $15
Energy Charge Lower Even Lower Lowest Low
Demand Charge? No Yes Yes No
Observe time-of-use hours? Yes Yes Yes No
How to save money * Use less energy
* Shift to off-peak hours
* Use less energy
* Level out your load
* Use less energy
* Shift to off-peak hours
* Level out your load
* Use less energy

Small General Service pricing plans:

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SGS Time-of-Use

Shifting the majority of your business' electricity usage to off-peak hours can reduce your bill.
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SGS Peak Demand

Avoid using a lot of energy at any one time during peak usage periods.
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SGS Demand TOU

Use less power during time periods when businesses typically use energy the most.
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SGS Basic

Pay bills based on your small business' total monthly electric use.

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 standard 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.

Rate Code Description
ERRES Basic (Residential Service)
ERREST Time-of-Use (Residential Service Time-of-Use)
ERRESD Peak Demand (Residential Service Demand)
ERRESDT Demand Time-of-Use (Residential Service Demand Time-of-Use)
EGSGS SGS Basic (Small General Service)
EGSGST SGS Time-of-Use (Small General Service Time-of-Use)
EGSGSD SGS Peak Demand (Small General Service Demand)
EGSGSDT SGS Demand Time-of-Use (Small General Service Demand Time-of-Use)
EGMGS Medium General Service
EGMGST Medium General Service Time-of-Use
EGMGSST Time-of-Use for Medium General Service Schools
EGLGS Large General Service
EGLGST Large General Service Time-of-Use
EGLGSST Time-of-Use for Large General Service Schools
EILPS Large Power Service
EILPST Large Power Service Time-of-Use
EGLTG Lighting Service
EGIPS-F Interruptible Power Service (Frozen)
R-1 Purchased Power Fuel Adjustor Clause (PPFAC)
R-2 Demand Side Management
R-3 Market Cost of Comparable Conventional Generation (MCCCG) Calculation as Applicable to Rider-4 NM-PRS
R-4 Net Metering for Certain Partial Requirements Service (NM-PRS)
R-5 Electric Service Solar Rider (Bright Arizona Community Solar™)
R-6 Renewable Energy Standard and Tariff (REST) Surcharge REST-TS1 Renewable Energy Program Expense Recovery
R-7 Customer Self-Directed Renewable Energy Option REST-TS2 Renewable Energy Standard Tariff
R-8 Lost Fixed Cost Recovery (LFCR)
R-9 Transmission Cost Adjustor (TCA)
R-12 Interruptible Power Service
R-13 Economic Development Rate
R-14 Resource Comparison Proxy Export Rate (RCP-PRS)
Statement of Charges UNS Electric Statement of Charges
Tax Adjustment Revised Plan of Administration
Bill Estimation Bill Estimation Methodologies
Curtailment Plan Guidelines for Electric Load Curtailment
QF-A Rates for Power and Energy Transactions With Qualifying Facilities That Receive Full Requirements 100 kW or Less (QF-A)
QF-B Rates for Power and Energy Transactions With Qualifying Facilities That Receive Partial Requirements 100 kW or Less (QF-B)
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