disponible únicamente en inglés

Solar energy: SRP’s commitment to the future

SRP works hard to deliver reliable, affordable power. We’re planning for a sustainable future. Learn about our commitment to cut carbon emissions by 82% from 2005 levels by 2035, and our goal to achieve net zero carbon by 2050.

On this page:

    Advancing solar energy in Arizona

    Homes and businesses across the Valley have long relied on more traditional power plants for energy. As we move toward a more sustainable future, SRP is developing renewable resources, including utility-scale solar projects.  
    As part of our goal, SRP is developing over 1,500 megawatts (MW) of additional large-scale solar. Once online, these assets will push our total solar energy to more than 2,025 MW — enough to power 450,000 average-size homes. 

    Solar energy resources for customers

    SRP is taking steps to minimize our environmental impact and helping our customers do the same. We offer a variety of programs and resources that can help you or your business get started with solar power.  

    How much solar and battery storage does SRP have?

    For more than 10 years, SRP has steadily been investing in utility-scale solar energy to meet the clean energy demands of our customers. Recently, advancements in state-of-the-art battery storage have allowed SRP to extend the life of solar to meet energy demand during peak hours of the day and at night. 

    Project Nameplate Capacity
    Commercial Operation Date
    Co Bar Solar 794 MW By 2027
    Cameron Solar 200 MW By 2027
    Copper Crossing, Phase II,
    Advanced Solar
    55 MW By 2025
    Eleven Mile Solar + Battery 300 MW + 4-hour battery 2024
    Signal Butte 250 MW 2024
    Superstition Battery 90 MW + 4-hour battery 2024
    Sierra Estrella Battery 250 MW + 4-hour battery 2024
    Brittlebush Solar 200 MW By 2024
    Storey Energy Center 88 MW + 88 MW, 3-hour battery 2023
    Sonoran Solar Energy Center 260 MW + ​1 gigawatt-hour battery 2023
    Saint Battery 100 MW + 4-hour battery 2023
    West Line Solar 100 MW 2022
    Agua Fria 25 MW 2021
    Central Line Solar 100 MW 2021
    Bolster Battery 25 MW + 4-hour battery 2021
    East Line Solar 100 MW 2020
    Saint Solar 100 MW 2020
    Pinal Central Energy Center,
    Casa Grande
    20 MW + 10 MW 4-hour battery 2018
    Apple Solar 52.25 2017
    Kayenta 1, Navajo Nation 27 MW 2017
    Kayenta 1, Navajo Nation 27 MW 2017
    Sandstone Solar Facility, Florence 45 MW 2015
    Queen Creek Solar, Queen Creek 19 MW 2012
    Copper Crossing Solar Ranch, Florence 20 MW 2011

    Utility-scale battery storage  

    SRP is investing not just in utility-scale solar systems but also in utility-scale storage systems. Since 2019, SRP has been investing in energy storage. Our projects include: 

    • 25 MW Bolster Substation Battery System at the Agua Fria Generating Station in Glendale 
    • 10 MW battery storage integrated with 20 MW solar system at the Pinal Central Solar Energy Center in Casa Grande 

    We also have approximately 150 MW of energy storage via pump-back capability at both Mormon Flat and Horse Mesa dams. These systems effectively act as large batteries, pumping water uphill when energy costs are low and running the water through turbines when the energy is needed the most. 

    By scaling our capability to store solar energy, we’ll be prepared to supply power on overcast days, during storms and at night.

    Join us in our carbon reduction goal  

    Join SRP in creating a more sustainable future. 


    Plant desert-friendly shade trees to keep your home cool.

    Register for a shade tree workshop

    Switch to an electric vehicle and charge during off-peak hours.

    Check out the EV price plan

    Make your next home an ENERGY STAR® home and use 25% to 50% less energy.

    Learn more about Energy Star Homes