McFarland A Solar and Storage
AES Clean EnergyYuma County
McFarland A Solar and Storage is a hybrid solar and battery storage facility with 300 MW of EIA-reported total operating capacity and 400 MWh of reported storage energy capacity in Yuma County, Arizona, registered as EIA Plant ID 66636. AES Clean Energy owns and operates the plant, a subsidiary of The AES Corporation. AES described McFarland A Solar-plus-Storage as one of the largest solar-plus-storage projects in Arizona when it was completed in 2023. Its grid role is hybrid solar PV generation paired with battery storage; the cited records do not establish a more specific baseload, peaking, or arbitrage designation.
Mapped infrastructure geometry associated with this asset.
Batteries, Solar Photovoltaic
4-hour storage duration
McFarland A Solar and Storage is operating.
500 kV · Arizona Public Service Company (APS); the Hoodoo Wash Switchyard is co-owned by APS, SDG&E, and IID.
EIA plant 66636 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| BESS | Batteries | Operating | 100 | 400 |
| MCFRA | Solar Photovoltaic | Operating | 200 | Unknown |
The Hoodoo Wash transmission connection involves APS, SDG&E, and IID. CAISO’s McFarland A/B filing identifies their jointly owned switchyard. That transmission relationship does not establish SDG&E ownership of McFarland A or a power purchase agreement. The phases retain separate capacity records.
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| BESS | 100 MW 100 MW summer | Batteries BA | Dec 2023 | Operating |
| MCFRA | 200 MW 200 MW summer | Solar Photovoltaic PV | Dec 2023 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Project milestones and public references behind the asset profile.
AES reported that McFarland A Solar-plus-Storage was among the renewable projects whose construction it completed in 2023.
CAISO
CAISO · Yuma County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Rexford Solar Farm | 540 MW | CA | |
| West Camp Wind Farm | 500 MW | AZ | |
| McFarland B Solar and Storage | 450 MW | AZ | |
| McFarland A Solar and StorageCurrent | 300 MW | AZ | |
| Morris Solar | 250 MW | MO | |
| Chevelon Butte Wind Farm | 238.2 MW | AZ | |
| Baldy Mesa Solar & Storage | 225 MW | CA | |
| Chevelon Butte Phase 2 | 216 MW | AZ |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator BESS, generator MCFRA with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
The Hoodoo Wash transmission connection involves APS, SDG&E, and IID. CAISO’s McFarland A/B filing identifies their jointly owned switchyard. That transmission relationship does not establish SDG&E ownership of McFarland A or a power purchase agreement. The phases retain separate capacity records.
McFarland A Solar and Storage reports 100 MW battery storage + 200 MW solar of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
McFarland A Solar and Storage is a Batteries, Solar Photovoltaic facility in Yuma County, AZ, participating in the CAISO market.
McFarland A Solar and Storage is in Yuma County, AZ, inside the CAISO balancing area.
McFarland A Solar and Storage is operated by AES Clean Energy according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
McFarland A Solar and Storage reported 536.5 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
McFarland A Solar and Storage interconnects at Hoodoo Wash 500 kV Switchyard, on the Arizona Public Service Company (APS); the Hoodoo Wash Switchyard is co-owned by APS, SDG&E, and IID. system.
By capacity, McFarland A Solar and Storage ranks #152 of 7,597 operating plants of the same technology nationally. It ranks #12 of 126 in AZ.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.