West Line Solar, LLC — Plant Summary
- EIA Plant ID
- 66125
- Capacity
- 100 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Pinal, AZ
- Operating Since
- 2022
- Generators
- 1
- Operator
- West Line Solar, LLC
- Parent Company
- AES
- Annual Generation
- 258,632.74 MWh
- Capacity Factor
- 29.5%
- Balancing Authority
- Salt River Project
- ISO/RTO
- —
- NERC Region
- WECC
West Line Solar, LLC
OperatingSolar
Ranked #25 of 104 Solar plants in AZ#726 of 7447 nationally
100 MW Solar operating in Pinal, AZ — Salt River Project
EIAGEM
100 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2022
Operating Since
Location
Coordinates
32.8299, -111.5930
County
Pinal, AZ
Nearby Plants
- Central Line Solar, LLCSolar100 MW · 2.1 km
- 1000 Mile SolarSolar300 MW · 3.4 km
- East Line SolarSolar100 MW · 3.5 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | West Line Solar, LLC | AES | — |
| Owner(s) | West Line Solar, LLC | AES | — |
| Status | Operating | operating | — |
Ownership Chain
About
West Line Solar, LLC is a 100 MW solar photovoltaic power plant located in Pinal County, Arizona. The plant began operating in 2022 and has one generator. It is owned and operated by West Line Solar, LLC, a subsidiary of AES. The plant utilizes single-axis solar tracking technology. It is interconnected to the Salt River Project balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
In its most recent year of operation, West Line Solar generated 258,633 MWh of electricity, achieving a capacity factor of 29.5%. West Line Solar is ranked as the 19th largest solar plant in Arizona out of 23, and 608th nationally out of 639. The plant has a reported power purchase agreement (PPA) price of $19.77 per MWh, according to data from Lawrence Berkeley National Laboratory (LBNL).
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Salt River Project
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
13.6K MWh
Latest Month
258.6K MWh
Annual Generation
29.5%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$23.6/MWh
LCOE (Levelized Cost)
$19.8/MWh
PPA Price
$12.0/MWh
Energy Value
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (8)Beta
Grid·capacity addition
A solar power project advances on Navajo land, despite local concerns
Navajo leaders approved a 4500-acre lease for a solar power project, but some community members still have questions.
The Arizona Republic·2 months ago
General
aes-20241231
Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐.
SEC.gov·1 years ago
General
aes-20231231
The aggregate market value of the voting and non-voting common equity held by non-affiliates on June 30, 2023, the last business day of the Registrant's most...
SEC.gov·2 years ago
Industry·other
Infrastructure Investment
Experience: Utilities and Regulated Assets, Solar, Wind District, Energy Systems, Conventional Generation, Midstream, Telecommunications, Transportation.
Mayer Brown·2 years ago
Last updated 2026-03-26
View all 8 articles