160 MW Batteries (30 MW) + Solar Photovoltaic (130 MW) operating in Pima, AZ — Tucson Electric Power Company
160 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2021
Operating Since
Coordinates
32.0351, -110.8925
County
Pima, AZ
Nearby Plants
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 | Wilmot Energy Center LLC | NextEra Energy | — |
| Owner(s) | Wilmot Energy Center LLC | NextEra Energy | — |
| Status | Operating | operating | — |
Wilmot Energy Center LLC is a hybrid solar and battery energy storage system (BESS) located in Pima County, Arizona. The plant, owned and operated by Wilmot Energy Center LLC, a subsidiary of NextEra Energy, began operating in 2021. It has a total capacity of 160 MW, consisting of solar photovoltaic generation paired with a 60 MWh lithium-ion battery storage system providing 2 hours of duration. The solar array utilizes single-axis tracking. Wilmot Energy Center is ranked 41st out of 47 power plants in Arizona and 367th out of 514 nationally.
The plant's primary fuel type is listed as MWH. In its most recent year of operation, Wilmot Energy Center generated 268,574 MWh, achieving a capacity factor of 19.2%. The plant operates within the Tucson Electric Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates a power purchase agreement (PPA) price of $22.99 per MWh, according to data from Lawrence Berkeley National Laboratory (LBNL).
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
Tucson Electric Power Company
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
15.1K MWh
Latest Month
268.6K MWh
Annual Generation
19.2%
Capacity Factor
$23.2/MWh
LCOE (Levelized Cost)
$23.0/MWh
PPA Price
$10.9/MWh
Energy Value
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
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