Photovoltaic systems

Solar photovoltaic (PV) panels convert energy from the sun into electricity. Arizona is one of the world’s sunniest places, making our state an ideal location for solar power systems.

Distributed Generation Interconnection Requirements (DGIR) Update: Please see updated guidelines regarding new DG installations.

Click here to view the Interconnection Administrative Guide.

Click here for important information about the RCP Rate and Meter Set Deadlines



What are the benefits of solar power?

  • Produces no emissions and is replenished naturally
  • By offsetting fossil-fueled-power, it avoids the release of 2 pounds of carbon dioxide (CO2) and 0.5 gallons of water for each kilowatt-hour (kWh) produced
  • Makes use of one of Arizona’s greatest natural resources – sunshine
  • May reduce monthly electric bills for participating customers

Are utility incentives available?

TEP does not offer financial incentives to customers who install solar electric PV systems at their home or business. Thanks to falling PV prices, such incentives are no longer necessary to encourage widespread adoption of solar power systems. This helps keep TEP’s rates down, since previous incentives were funded through customer-funded surcharges.

Homeowners who purchase a PV system may qualify for federal and state tax credits to reduce the cost of the system. Talk with a tax professional about current tax credits available to you for a renewable energy system. You can also view federal and state tax credits at

Is solar generation right for me?

The decision to install a PV system on your property should be made after you consider a variety of factors. Local building codes, availability of sunlight, maintenance requirements, the ability to safely connect to TEP's grid, and the cost of alternative energy options should all enter into your decision to install solar generation. You also should carefully review the terms associated with buying or leasing such a system, which may include limitations that apply to future home sales. TEP’s Solar Analysis tool can help you determine if installing a PV system makes sense for you.

Your solar installer can determine if your home is located in an area where new PV systems are subject to additional review and requirements under Arizona’s Distributed Generation Interconnection Rules.

How do I get started?

Review the FAQs and your solar installer should review the Technical Requirements for more information. The Installer Resources section has information on how you can find a licensed solar installer and how your installer can submit the appropriate application to connect to TEP’s grid.

We also strongly recommend that customers intending to install a new PV system learn more about state interconnection requirements to determine whether their system can be safely installed and connected to TEP’s grid.


Technical Requirements

  • A system must include a dedicated performance meter (on grid-tied systems, supplied by TEP) to allow for monitoring of the amount of electricity produced.
  • Photovoltaic modules must be covered by a manufacturer’s warranty of at least 20 years.
  • All photovoltaic modules must be certified by a nationally recognized testing laboratory as meeting the requirements of UL Standard 1703.
  • All other electrical components must be UL listed.
  • The inverter must be certified as meeting the requirements of IEEE-1547 — Recommended Practice for Utility Interface of Photovoltaic Systems — and it must be UL 1741 certified.
  • The utility meter, inverter, and utility disconnect will be installed in a location readily accessible by TEP during normal business hours.

Steps to Installing Rooftop Solar

Get Started

  1. The licensed solar installer prepares an estimate for the customer. The installer should determine if the home is in an area where the PV system can safely connect to TEP’s grid. Reference TEP’s Saturated Maps and the AZROC website to see if your contractor is licensed.
  2. Complete all required TEP program documents. The installer is responsible for submitting the appropriate application for your system.
  3. TEP will review your online application and submitted program documents within 7 days of receipt to ensure they conform to program requirements.
  4. TEP has 14 days to complete its Interconnection Review. Once the review is complete, TEP will email the customer and their installer notifying them if the project has been approved.
  5. The installer will pick up TEP-supplied equipment and materials at Border States. Material Pickup information
  6. Installer notifies TEP that installation is complete by electronically submitting a Notice of Installation Completion (NIC). TEP, at its discretion, may perform a system inspection.
  7. TEP reviews the NIC and initiates the metering personnel to install a solar production meter and complete a revenue meter exchange.

Online Application

TEP PowerClerk Application Log In

(For solar installers use only)

Are you a new solar installer?

If you are a new solar installer in our service territory, please fill out TEP's New Installer packet and submit the materials to to be given access our online data system.

Q&A New Exporting System Interconnection Agreement


2021 Solar Installers Meeting
Watch our virtual discussion to learn more about:

  • Our plans for the future
  • Solutions we’ve identified in response to last year’s rule changes around connecting new distributed generation systems
  • Streamlined processes designed to save you time and effort
  • Click here to download the presentation PDF

Questions about our plans? Please send to