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57.6 MW Wind operating in Bonneville, ID
57.6 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2012
Operating Since
Coordinates
43.4033, -111.7362
County
Bonneville, ID
Nearby Plants
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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 | Utah Associated Mun Power Sys | Utah Municipal Power Agency | — |
| Owner(s) | Utah Associated Mun Power Sys | Utah Associated Municipal Power Systems | — |
| Status | Operating | operating | — |
Horse Butte Wind I, LLC is a 57.6 MW wind power plant located in Bonneville County, Idaho. The plant began operating in 2012 and is owned and operated by Utah Associated Municipal Power Systems. It utilizes a single onshore wind turbine generator. The primary fuel source is wind (WND). The plant's turbines have a hub height of 80 meters and a rotor diameter of 100 meters. The wind turbine manufacturer is Vestas, and the model is V100-1.8.
In the most recent year of data, Horse Butte Wind I generated 167,388 MWh of electricity, resulting in a capacity factor of 33.2%. The plant operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Horse Butte Wind I ranks as the 7th largest wind plant out of 34 in the state of Idaho, and 902nd out of 1424 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
16.3K MWh
Latest Month
167.4K MWh
Annual Generation
33.2%
Capacity Factor
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2013
$1,895/kW
Est. Construction Cost
Total estimated cost: $109.2M
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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