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220 MW Wind operating in Yankton, SD — Southwest Power Pool
220 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2020
Operating Since
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 | AES Distributed Energy | Sustainable Power Group LLC | — |
| Owner(s) | AES Distributed Energy | Sustainable Power Group LLC | — |
| Status | Operating | operating | — |
Prevailing Wind Park is a 220 MW wind farm located in Yankton County, South Dakota. The facility began operating in 2020 and is owned and operated by AES Distributed Energy. The plant utilizes a single generator consisting of multiple onshore wind turbines. The turbines are manufactured by GE Wind, model GE3.8-137, with a hub height of 110 meters and a rotor diameter of 137 meters.
The plant's latest annual generation was 850,790 MWh, resulting in a capacity factor of 44.2%. Prevailing Wind Park is the fourth-largest wind farm in South Dakota out of 14, and ranks 219th nationally out of 734 wind plants. The facility operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
73.5K MWh
Latest Month
850.8K MWh
Annual Generation
44.2%
Capacity Factor
2020
$1,598/kW
Est. Construction Cost
Total estimated cost: $351.6M
Point of Interconnection
Nearest Substation
Utica Junction Substation · 230 kV
Substation Distance
0 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
WAUE.BEPM.PREVAIL
Pricing Hub
SPP North Hub
Location Type
Settlement Location
Node Source
Curated node match
Last updated 2026-03-26
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ask pi about Prevailing Wind ParkSouthwest Power Pool (SWPP)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP