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249.8 MW Wind operating in Lea, NM — Tucson Electric Power Company
249.8 MW
Nameplate Capacity
2
Generators
units
Onshore Wind Turbine
Technology
2021
Operating Since
Coordinates
33.0123, -103.7616
County
Lea, NM
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 | Tucson Electric Power Co | EDF Renewables | — |
| Owner(s) | Tucson Electric Power Co | Fortis | — |
| Status | Operating | operating | — |
The Oso Grande Wind Farm is a 249.8 MW wind power facility located in Lea County, New Mexico. The plant began operating in 2021 and is owned by Fortis, a Canadian company, and operated by Tucson Electric Power Co. It consists of two generators utilizing onshore wind turbine technology. The facility ranks as the 10th largest wind farm in New Mexico out of 22, and 175th nationally out of 734.
The wind farm uses Siemens Gamesa Renewable Energy SG-4.5-145 turbines, with a hub height of 107.5 meters and a rotor diameter of 145 meters. In its most recent year of operation, the plant generated 550,765 MWh, achieving a capacity factor of 25.1%. The installed cost of the facility was $1,448.27 per kW, according to FERC data. The Oso Grande Wind Farm operates within the Western Electricity Coordinating Council (WECC) NERC region and is under the balancing authority of Tucson Electric Power Company.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
41.6K MWh
Latest Month
550.8K MWh
Annual Generation
25.1%
Capacity Factor
Wind · Tucson Electric Power Company · Data from 2021–2024
$1,456/kW
Installed Cost
$8.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about Oso Grande Wind FarmTucson Electric Power Company (TEPC)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility