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99 MW Wind operating in Day, SD
99 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2010
Operating Since
Coordinates
45.7885, -100.2710
County
Day, SD
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 | Day County Wind LLC | NextEra Energy | — |
| Owner(s) | Day County Wind LLC | NextEra Energy | — |
| Status | Operating | retired | — |
Day County Wind LLC is a 99 MW wind power plant located in Day County, South Dakota. The plant began operating in 2010 and utilizes one generator. It is owned and operated by Day County Wind LLC, a subsidiary of NextEra Energy. The facility consists of onshore wind turbines manufactured by GE Wind, specifically the GE1.6-91 model, with a rotor diameter of 91 meters and a hub height of 80 meters.
The plant's primary fuel source is wind (WND). In its most recent year of operation, Day County Wind LLC generated 439,195 MWh of electricity, achieving a capacity factor of 50.6%. The plant operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. Day County Wind LLC ranks as the 15th largest wind farm in South Dakota out of 24, and 745th nationally out of 1424.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Southwest Power Pool (SWPP)
Grid Voltage
115.0 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.
39.6K MWh
Latest Month
439.2K MWh
Annual Generation
50.6%
Capacity Factor
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2013
$1,895/kW
Est. Construction Cost
Total estimated cost: $187.6M
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Market Position
ISO/RTO Market
SPP
LMP Node
WAUE.BEPM.DAYCOUNTY1
Pricing Hub
SPPNORTH_HUB
Location Type
Settlement Location
Node Source
Curated node match
1 buyer • 7 active contracts
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