Electric Utilities | Arizona Corporation Commission

Electric

The Arizona Corporation Commission oversees the electric power industry in Arizona. To get power to your home or business, utilities or their affiliates provide power generation, high-voltage transmission and low-voltage distribution. Power can be purchased from another company or generated at a power plant owned and operated by a traditional utility. It then travels along high-voltage lines before it is "stepped down" to a lower voltage at a substation near your home or office. Distribution lines leaving the substation carry the power to your home or office.

The Arizona Corporation Commission does not have authority over electric service provided by a city or municipality, irrigation district, electric district or utilities operated by tribal authorities.

Electrical Systems 10 Year Transmission Plans

Electric System 10 Year Transmission Plans for each company proposing to build transmission lines in Arizona in the coming ten year period are to be filed by Januay 31st of each year. These plans along with information on the related Commissions Biennial Transmission Plan are all posted in the Commissions eDocket system. Individual company plans for a given year can be located by clicking on the docket number shown below for that year and looking in the Documents tab.

2010-2019

SRP 10 year plan (pdf)
TEP 10 year plan (pdf)
UNSE 10 year plan (pdf)

2009-2018

APS 10 year plan (pdf)
SRP 10 year plan (pdf)
SWTC 10 year plan (pdf)
TEP 10 year plan (pdf)
UNSE 10 year plan (pdf)

2008-2017

SRP 10 year plan (doc)
SRP 2008 EHV Transmission Diagrams (ppt)
SWTC 10 year plan (pdf)
TEP 10 year plan (pdf)

List of Regulated Companies

pdf

List of Regulated Electric Companies (pdf)

Map of Electric Companies

pdf

Map of Arizona's Electric Companies (pdf)

Interconnection Rulemaking Technical Workshops

Workshop - April 13, 2016

Arizona Public Service Presentation: Interconnection Process (pdf)
Arizona Public Service Presentation: T&D Technology Innovation and Integration (pdf)
Hyde Engineering Presentation: Non-Exporting Storage (pdf)
Southwest Energy Efficiency Project (SWEEP) Presentation : DG Interconnection Approval Process (pdf)
TEP/UNSE Presentation: Rulemaking - Interconnection of DG Facilities (pdf)
Western Resource Advocates Presentation: AZ Interconnection Workshop (pdf)

Helpful Links

Electric Rules (pdf)
Electric Terminology
Environmental Protection Agency
Federal Energy Regulatory Commission
Financial Assistance Programs
FAQs
National Association of Regulatory Utility Commissioners (NARUC)
Renewable Energy Standards & Tariff

Public Information

Map of Arizona's Electric Companies (pdf)
List of Regulated Electric Companies (pdf)

Current Issues

Biennial Transmission Assessment Information
Integrated Resource Planning

Utilities

Water/Wastewater

Contact the Utilities Division

Address:

1200 W. Washington St,
Phoenix, AZ 85007

Phone:

Phoenix Office:
(602) 542-4251

Tucson Office:
(520) 628-6550

Toll Free In-State Only:
1 (800) 222-7000

Email:

UtilitiesDiv@azcc.gov

PLEASE NOTE - The use of inappropriate or threatening language when submitting a complaint or comment may result in your item not being docketed and/or no action taken.