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Grid management and improvement projects

SRP is committed to providing our customers with safe and reliable energy. See the projects we’re currently working on to make our grid more resilient, efficient and secure for years to come.

On this page:

    Generating power: SRP power plant projects

    Discover the major power plants and generating facilities we’re planning, siting and constructing to meet the Valley’s energy needs.

    Coolidge Generating Station

    The Coolidge Expansion Project (CEP) will position SRP to meet increasing energy needs, add more renewable resources, and maintain the power grid well into the future.

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    Copper Crossing Energy and Research Center

    The proposed continued development will complement the existing solar generation at the site and is expected to feature generating resources needed to support and enable SRP’s transition to a lower carbon resource portfolio.

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    Carrying power through the Valley: SRP transmission projects

    These projects are in progress to build, update and maintain the electric system that distributes power from power plants to substations around Arizona.

    Voltage: 230 kV | Phase: Construction
    Abel-Pfister-Ball 

    SRP will build a double-circuit 230 kV transmission line connecting two SRP-owned and previously sited 230/69 kV substations.

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    Voltage: 230 kV | Phase: Construction
    High-Tech Interconnect Project (HIP)

     A transmission project that will provide reliable power to the recently announced $20 billion expansion of Intel’s Chandler campus.

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    Voltage: 230 kV | Phase: Design
    Project Huckleberry

    A proposed half-mile 230 kV transmission line and substation that are required to provide reliable power to serve Meta’s data center located at the southeast corner of Elliot and Ellsworth roads in Mesa.

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    Voltage: 230 kV | Phase: Construction
    Project Red Hawk

    Formerly the Allium Project. SRP will provide energy services and infrastructure to a commercial customer on its 187-acre parcel for a data center located in east Mesa, Arizona.

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    Voltage: 230 kV | Phase: Construction
    Southeast Power Link

    SRP will build 7 miles of new overhead 230 kV power lines and a new 230/69 kV receiving station. A half-mile of the approved route will be located in Queen Creek with the remainder in Mesa.

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    Voltage: 115 kV | Phase: Design
    Superior - Silver King Relocation

    At the request of Resolution Copper Mining, LLC, SRP will relocate approximately 1 mile of an existing 115 kV line on Resolution's property.

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    Permitted corridors

    See our 500 kV projects that are permitted but not yet in design or construction.

    • Palo Verde - Pinal WestDocument is a PDF: Project will allow SRP to construct two parallel single-circuit 500 kV lines from the Hassayampa Switchyard to the Pinal West Substation. 
    • Palo Verde - SaguaroDocument is a PDF: Project will allow for construction of a 500 kV transmission line from the Palo Verde Generating Station to the Saguaro RS. 
    • Saguaro - WinchesterDocument is a PDF: Project will allow for construction of a 500 kV line from the Saguaro Generating Station to the Winchester Substation. 
    • Pinnacle Peak - BrandowDocument is a PDF: Project will allow SRP to co-locate a circuit on the existing Pinnacle Peak - Brandow/Papago Buttes 230 kV line.

    Bringing power to your home: SRP distribution projects

    Explore the power line projects we’re working on to help ensure efficient and safe delivery of electricity to homes and businesses.

    Humphrey-Turpen 69 kV Transmission Project

    We’re building a 69 kV line that will connect from the Humphrey Substation on Riggs and Lindsay roads to the Turpen Substation on Appleby and Lindsay roads.

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    Hartman Project

    This project will support a commercial customer in the Elliot Road Technology Corridor in Mesa with new electric infrastructure.

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    How the electric grid works

    The electrical grid is a highly complex system that delivers electricity to homes and businesses. It can be broken down into three key steps:

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    Generation

    Electricity starts at a generator, which can be powered by fossil fuels, wind turbines, solar panels, water or nuclear reactors.

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    Transmission

    After power is generated, it moves throughout the Valley through transmission lines – those large power lines you often see along the road.

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    Distribution

    Electricity travels through overhead or underground power lines and into your home.

    Developing the next-generation power grid

    Grid enhancements will include quicker outage restoration, improved cybersecurity and better integration with renewable sources.

    SRP projects at your home

    To maintain the power grid and ensure reliable delivery to your home, we may need access to your property to fix or replace equipment on occasion.

    See what to expect and how to prepare for SRP's cable replacement and maintenance process.

    1. First, we’ll need access.
      If we need to access equipment in your yard, we’ll send a letter, leave a door hanger or call you to let you know.

      When we arrive to do the work, a crew member will knock on your door and announce their intentions before entering.
    2. We try our best to avoid outages.
      It's possible that a line may need to be de-energized while work is being done.

      You may be affected by a brief outage, but in most cases, this will only be for a short period of time.

      If a new wire is being installed, another outage may be necessary at a later date. In that case, SRP will notify you at least two days in advance of the planned power outage.

      If you have a medical condition and depend on a medical device that requires electricity, please contact the Public Involvement Agent listed on your construction phase letter for more information.
    3. Sometimes digging is necessary.
      Digging is necessary when working on an underground electrical conduit. Our designers will always choose the path of least resistance and work to avoid conflict with existing underground structures.

      At the end of a project, our team is dedicated to restoring a site to its former state as best as possible.
    4. We’re available — and happy — to resolve any issues.
      Our Public Involvement Representative will send a series of letters including the SRP Public Involvement Representative responsible for your project.

      Please contact the  Representative listed on your letter and we’ll be happy to address your concerns as soon as possible.

    Still have questions?

    We’d love to provide answers. Give us a call at (602) 236-2872(602) 236-2872 to get in touch.