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40 MW Batteries (20 MW) + Solar Photovoltaic (20 MW) operating in Cochise, AZ — Tucson Electric Power Company
40 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2023
Operating Since
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 | SR McNeal, LLC | Silicon Ranch Corp | — |
| Owner(s) | SR McNeal, LLC | Silicon Ranch Corp | — |
| Status | Operating | operating | — |
GEM identifies the owner as Silicon Ranch Corp
This entity is not yet in the GEM ownership database — chain unavailable.
The SR McNeal facility is a 40 MW hybrid power plant located in Cochise County, Arizona. Operated by SR McNeal, LLC, the plant began commercial operation in 2023 and utilizes both solar photovoltaic and battery storage technologies. The facility consists of two generators and is fueled primarily by energy from solar, stored in lithium-ion batteries. The solar array uses single-axis tracking to maximize energy capture.
SR McNeal has a battery energy storage system (BESS) with a capacity of 20 MWh and a duration of 1 hour. In its first year of operation, the plant generated 52,776 MWh, achieving a capacity factor of 15.1%. The plant operates within the Tucson Electric Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. SR McNeal ranks as the 56th largest power plant in Arizona out of 68, and 632nd nationally out of 1205. Financial data indicates a power purchase agreement (PPA) price of $23.86 per MWh, according to data from Lawrence Berkeley National Laboratory (LBNL).
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
3.0K MWh
Net Discharge
52.8K MWh
Annual Net Energy
15.1%
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.
Data from 2023–2024
$11.8/MWh
Energy Value
$15.5/MWh
Capacity Value
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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No ask pi reports yet for this entity.
ask pi about SR McNealTucson Electric Power Company (TEPC)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP