Sonoran Solar Energy
Solar and battery storage project in Maricopa County, Arizona. 750 MW of nameplate capacity across 2 generators, operated by Sonoran Solar Energy, LLC.
Also known as Sonoran Solar Project · EIA plant 66627
This project groups Sonoran Solar Energy (EIA 66627). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 750 MWSolar 490.0 · Battery storage 260.0
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- July 2023First generator online
- Operator
- Sonoran Solar Energy, LLCEIA operator ID 65652
- Grid
- SRPBalancing authority SRP
- Price nodes
- None linkedNo verified ISO node
- Location
- Maricopa County, AZ33.2488, −112.5424
- EIA plant ID
- 66627EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sonoran Solar Energy produces
Free · EIA-923Net generation, 2025
1.08 TWh
1,077,137 MWh, final
Capacity factor, 2025
26.2%
2024: 26.4%
January to July 2026
619 GWh
Provisional
Range, 2024 to 2025
1.1–1.1
TWh a year. Low 2025, high 2024
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | 90,865 | Not reported | 7 of 12 |
| 2024 | 1,094,022 | 26.4% | 12 of 12 |
| 2025 | 1,077,137 | 26.2% | 12 of 12 |
| 2026 (provisional, partial year) | 618,737 | 28.1% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| SON12 | Solar Photovoltaic | 490.0 | December 2023 |
| SON13 | Batteries | 260.0 | July 2023 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Sonoran Solar Energy, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about Sonoran Solar Energy
How much power does Sonoran Solar Energy produce?
Sonoran Solar Energy reported 1,077,137 MWh (1.08 TWh) of net generation in 2025, a 26.2% capacity factor on 750 MW of nameplate capacity. From January to July 2026 it reported 619 GWh, which is provisional.
Where is Sonoran Solar Energy?
Sonoran Solar Energy is in Maricopa County, Arizona, at 33.2488, −112.5424. It is in the Salt River Project balancing area (SRP).
Who operates Sonoran Solar Energy?
EIA-860M for August 2026 lists Sonoran Solar Energy, LLC as the operator (EIA operator ID 65652). The operator is not always the owner.
Is Sonoran Solar Energy a solar or a battery storage plant?
Both. Solar capacity totals 490 MW and battery storage capacity totals 260 MW.
When did Sonoran Solar Energy start operating?
Its first generator began operating in July 2023, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page