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84.9 MW Batteries (41 MW) + Solar Photovoltaic (44 MW) operating in Maricopa, AZ — Arizona Public Service Company
84.9 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2017
Operating Since
Coordinates
32.5510, -111.2892
County
Maricopa, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | operating | — |
Located in Maricopa County, Arizona, the Red Rock power plant is a hybrid solar and battery energy storage system (BESS) facility with a total capacity of 84.9 MW. The plant began operating in 2017 and is owned by Pinnacle West Capital, with Arizona Public Service Co. (APS) serving as the operator. The facility utilizes both solar photovoltaic technology with single-axis tracking and battery storage. The battery energy storage system has a capacity of 164 MWh and a duration of 4 hours, employing lithium-ion battery chemistry. Red Rock ranks as the 50th largest power plant in Arizona out of 68, and 532nd nationally out of 1205.
Red Rock operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. The plant's latest annual generation was 85,866 MWh, resulting in a capacity factor of 11.5%. Financial data indicates an installed cost of $2,288.8 per kW, based on FERC filings. The plant has been the subject of 10 news articles, with 9 focused on industry topics and 1 on grid-related matters. The plant's primary fuel is listed as MWH, reflecting its reliance on solar energy and battery storage.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
6.2K MWh
Latest Month
85.9K MWh
Annual Generation
11.5%
Capacity Factor
Data from 2016–2024
$10.4/MWh
Energy Value
$21.1/MWh
Capacity Value
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all 5 articlesNo ask pi reports yet for this entity.
ask pi about Red RockArizona Public Service Company (AZPS)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility