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174.8 MW Wind operating in Adair, IA
174.8 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2008
Operating Since
Coordinates
41.4598, -94.6675
County
Adair, IA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MidAmerican Energy Co | MidAmerican Energy Co | — |
| Owner(s) | MidAmerican Energy Co | Berkshire Hathaway | — |
| Status | Operating | operating | — |
The Adair Wind Farm is a 174.8 MW wind power facility located in Adair County, Iowa. The plant began operating in 2008 and is owned by Berkshire Hathaway and operated by MidAmerican Energy Co. It consists of a single generator utilizing onshore wind turbine technology. The facility is interconnected to the Midcontinent Independent Transmission System Operator, Inc. (MISO) and falls within the MRO NERC region. The plant is ranked 32nd out of 54 wind facilities in Iowa and 412th out of 734 nationally.
The wind farm's turbines have a hub height of 80 meters and a rotor diameter of 93 meters. The turbines were manufactured by Siemens and are model SWT-2.3-93. In its most recent year of operation, the plant generated 554,807 MWh, achieving a capacity factor of 36.2%. The installed cost of the facility was $2,053.92 per kW, according to FERC data.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
161.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
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.
51.5K MWh
Latest Month
554.8K MWh
Annual Generation
36.2%
Capacity Factor
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Wind · MidAmerican Energy Company · Data from 2015–2024
$1,697/kW
Installed Cost
$8.8/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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Market Position
ISO/RTO Market
MISO
LMP Node
MEC.ADAIR_W1
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
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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