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18.9 MW Wind operating in Twin Falls, ID
18.9 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2009
Operating Since
Coordinates
42.8767, -115.0174
County
Twin Falls, 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 | Cassia Gulch Wind Park, LLC | Exelon | — |
| Owner(s) | Cassia Gulch Wind Park, LLC | Constellation Energy | — |
| Status | Operating | operating | — |
Cassia Gulch is a wind power plant located in Twin Falls County, Idaho. The plant has a total capacity of 18.9 MW and began operating in 2009. It is owned by Constellation Energy and operated by Cassia Gulch Wind Park, LLC. The facility consists of a single generator utilizing onshore wind turbine technology. The plant is interconnected within the Idaho Power Company balancing authority, operating within the Western Electricity Coordinating Council (WECC) NERC region.
The plant's wind turbines have a hub height of 79 meters and a rotor diameter of 88 meters. The turbines were manufactured by Suzlon, model S88. In its latest year of reported generation, Cassia Gulch produced 35,441 MWh of electricity, achieving a capacity factor of 21.5%. The plant has a PPA price of $73.3 per MWh, according to FERC EQR data. Cassia Gulch is ranked as the 26th largest wind plant in Idaho out of 34, and 1098th nationally out of 1424.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Idaho Power Company (IPCO)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
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.
2.6K MWh
Latest Month
35.4K MWh
Annual Generation
21.5%
Capacity Factor
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Historic financial signal for this asset — PPA, LCOE, market value where reported. The base for forward bankability and insurance analytics on the InfraSure platform.
Cassia Gulch Wind Park, LLC · Data from 2019–2025
$73.3/MWh
PPA Price
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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.
1 buyer • 23 active contracts
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