Papago Energy Storage — Plant Summary
- EIA Plant ID
- 66779
- Capacity
- 300 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2025
- Generators
- 1
- Operator
- RE Papago LLC
- Parent Company
- —
- Annual Generation
- 0 MWh
- Capacity Factor
- 0.0%
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
Papago Energy Storage
OperatingBESS
Ranked #22 of 55 BESS plants in AZ#91 of 837 nationally
300 MW BESS operating in Maricopa, AZ — Arizona Public Service Company
EIA
300 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
33.4836, -113.0378
County
Maricopa, AZ
Nearby Plants
- Desert Sand BESSBESS600 MW · 2.0 km
- Harquahala Generating ProjectNatural Gas1277.1 MW · 7.1 km
- Harquahala 2BESS600 MW · 7.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | RE Papago LLC | — | — |
| Owner(s) | RE Papago LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Papago Energy Storage is a 300 MW battery energy storage system (BESS) located in Maricopa County, Arizona. The facility, owned and operated by RE Papago LLC, commenced operations in 2025. It utilizes batteries as its primary fuel source, designated by the code "MWH," and consists of a single generator. The BESS has a duration of 4 hours.
The plant operates within the Arizona Public Service Company balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region. Papago Energy Storage is ranked as the 24th largest power plant in Arizona out of 47, and nationally it holds the 166th position out of 514 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
525 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
WithdrawnBattery300 MWWest
Generation
0 MWh
Net Discharge
0 MWh
Annual Net Energy
0.0%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
General
Recurrent Energy Brings Major Arizona Energy Storage Project Online
Recurrent Energy, a subsidiary of Canadian Solar, and a global developer, owner, and operator of solar and energy storage assets,...
POWER Magazine·8 months ago
General
Recurrent Energy Brings Major Arizona Energy Storage Project Online
Recurrent Energy, a subsidiary of Canadian Solar, and a global developer, owner, and operator of solar and energy storage assets,...
POWER Magazine·8 months ago
Grid·capacity addition
Recurrent Energy Brings Major Arizona Energy Storage Project Online
Recurrent Energy, a subsidiary of Canadian Solar, and a global developer, owner, and operator of solar and energy storage assets,...
Recurrent Energy (developer)Canadian Solar (other)
POWER Magazine·8 months ago
General
Recurrent Energy Brings Major Arizona Energy Storage Project Online
Recurrent Energy, a subsidiary of Canadian Solar, and a global developer, owner, and operator of solar and energy storage assets,...
POWER Magazine·8 months ago
Last updated 2026-03-26
View all 10 articles