Tatanka Ridge — Plant Summary
- EIA Plant ID
- 61046
- Capacity
- 154 MW
- Primary Fuel
- Wind
- Technology
- Onshore Wind Turbine
- Status
- Operating
- Location
- Deuel, SD
- Operating Since
- 2021
- Generators
- 1
- Operator
- Tatanka Ridge LLC
- Parent Company
- Avangrid
- Annual Generation
- 593,774 MWh
- Capacity Factor
- 44.1%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Tatanka Ridge
OperatingWind
Ranked #12 of 25 Wind plants in SD#469 of 1442 nationally
154 MW Wind operating in Deuel, SD — Midcontinent Independent Transmission System Operator, Inc..
EIAGEMWD
154 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2021
Operating Since
Location
Coordinates
44.6232, -96.6986
County
Deuel, SD
Nearby Plants
- Astoria StationNatural Gas349 MW · 11.5 km
- Buffalo Ridge II LLCWind210 MW · 12.3 km
- Coyote RidgeWind97.4 MW · 22.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tatanka Ridge LLC | Avangrid Renewables [15%]; WEC Energy Group [85%] | — |
| Owner(s) | Avangrid Power LLC, WEC Energy Group | Avangrid | — |
| Status | Operating | operating | — |
Ownership Chain
About
Tatanka Ridge is a 154 MW wind power plant located in Deuel County, South Dakota. The facility, which began operating in 2021, is owned by Avangrid and operated by Tatanka Ridge LLC. It consists of a single generator utilizing onshore wind turbine technology. The plant uses GE2.8-127 wind turbines manufactured by GE Wind, with a hub height of 89 meters and a rotor diameter of 127 meters.
In its most recent year of operation, Tatanka Ridge generated 593,774 MWh of electricity, achieving a capacity factor of 44.1%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region. Tatanka Ridge is the 12th largest power plant in South Dakota out of 14, and ranks 463rd nationally out of 734 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Investor-Owned Utility
Sector
IPP Non-CHP
Generation
53.3K MWh
Latest Month
593.8K MWh
Annual Generation
44.1%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
MISO
LMP Node
OTP.TATANKARID
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
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