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3.6avg. commissioner years of serviceSource: Advanced Energy United
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12.78ยขavg. price per kWhSource: EIA
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3legislative session length, monthsSource: Legislative Session
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41%residential market share of the largest utilitySource: December 2024, Advanced Energy United
breakdown of market shareUtility Percentage Market Share in Arizona
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Arizona Public Service Co
Market Share41% -
Salt River Project
Market Share34% -
Tucson Electric Power Co
Market Share13% -
UNS Electric, Inc
Market Share3%
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3governor years servedSource: December 2024, Advanced Energy United
Utilities
Arizona Utilities
In most cases, we only provide profiles for the largest five utilities with more than 100,000 total customers.
The schedules listed here reflect what is established in statute, rules, or Orders. However, PUCs and utilities sometimes deviate from these schedules. Please check the most recent proceeding by going to the "Important Recurring Proceedings" section for each utility below.
Policy AreaElectric Energy Efficiency Rules
ScheduleUtilities must file implementation plans by June 1 every other year (odd years), and may also elect to file annual implementation plans. Utilities must submit a progress report on DSM programs by March 1 each year.
Policy AreaRenewable Energy Standard and Tariff (REST)
ScheduleBeginning on April 1, 2007, each affected utility must file a compliance report with Docket Control by April 1 each year. Beginning July 1, 2007, each affected utility must file an implementation plan with Docket Control by July 1 each year.
Policy AreaIntegrated Resource Plan
ScheduleBy April 1 of each even year, load-serving entities must file a 15-year resource plan and accompanying three-year action plan with Docket Control. By April 1 of each odd year, load-serving entities must file a work plan with Docket Control that outlines the 15-year resource plan and methods for how it will be carried out.
Arizona Public Service Co
Ownership TypeInvestor Owned
Balancing AuthorityArizona Public Service Company
NERC Regional EntityWECC
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in AZ41%
Salt River Project
Ownership TypePolitical Subdivision
Balancing AuthoritySalt River Project
NERC Regional EntityWECC
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in AZ34%
Tucson Electric Power Co
Ownership TypeInvestor Owned
Balancing AuthorityTucson Electric Power Company
NERC Regional EntityWECC
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in AZ13%
UNS Electric, Inc
Ownership TypeInvestor Owned
Balancing AuthorityTucson Electric Power Company
NERC Regional EntityWECC
Owns Generation
Owns Transmission
Share of Residential Customers in AZ3%