El Sol BESS — Plant Summary
- EIA Plant ID
- 62964
- Capacity
- 50 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2023
- Generators
- 1
- Operator
- Invenergy Services LLC
- Parent Company
- Invenergy
- Annual Generation
- -6,899 MWh
- Capacity Factor
- -1.6%
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
El Sol BESS
OperatingBESS
Ranked #43 of 55 BESS plants in AZ#407 of 837 nationally
50 MW BESS operating in Maricopa, AZ — Arizona Public Service Company
EIA
50 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2023
Operating Since
Location
Coordinates
33.5680, -112.3059
County
Maricopa, AZ
Nearby Plants
- Luke SolarSolar11.2 MW · 8.3 km
- Agua FriaNatural Gas737.5 MW · 8.5 km
- Amazon GoodyearSolar2.4 MW · 14.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Invenergy Services LLC | Invenergy Services | — |
| Owner(s) | Invenergy Services LLC | Invenergy | — |
| Status | Operating | — | — |
Ownership Chain
About
El Sol BESS is a 50 MW battery energy storage system located in Maricopa County, Arizona. The plant began operating in 2023 and is owned by Invenergy, with Invenergy Services LLC acting as the operator. The facility utilizes batteries as its primary fuel source, employing lithium-ion (LIB) chemistry. The battery storage capacity is 50 MWh, providing a duration of 1 hour at full output.
El Sol BESS is interconnected to the Arizona Public Service Company balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, the plant ranks 55th out of 68 power plants in Arizona and 605th nationally out of 1205 plants. The facility consists of a single generator.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
12.47 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
WithdrawnBattery50 MWWestLBNL
Generation
−864 MWh
Net Charging
-6.9K MWh
Annual Net Energy
-1.6%
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
Major US Solar and Storage Projects Advance in 2026: Google, Sunraycer, Invenergy Lead Development
A roundup of major US renewable energy projects announced or advancing in early 2026, featuring solar-plus-storage developments from Google,...
IndexBox·6 days ago
General
US Roundup: solar-plus-storage projects advance across the country
Updates on solar-plus-storage projects from Google and DTE Energy, Sunraycer, Invenergy and SRP, Idemitsu Renewables, and Clēnera.
Energy-Storage.News·6 days ago
General
US Roundup: solar-plus-storage projects advance across the country
Updates on solar-plus-storage projects from Google and DTE Energy, Sunraycer, Invenergy and SRP, Idemitsu Renewables, and Clēnera.
Energy-Storage.News·6 days ago
General
Following public hearings, Sloopy Solar project moves closer to state review
Invenergy has 90 days to submit Sloopy Solar Energy Center application to Ohio Power Siting Board.
Springfield News-Sun·5 months ago
Last updated 2026-03-26
View all 10 articles