Buffalo Ridge I LLC
Wind power plant in Brookings County, South Dakota. 50.4 MW of nameplate capacity across 1 generator, operated by Avangrid Power LLC.
Also known as Buffalo Ridge I Wind Farm · EIA plant 56792
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 50.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2009First generator online
- Operator
- Avangrid Power LLCEIA operator ID 15399
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Brookings County, SD44.4328, −96.4779
- EIA plant ID
- 56792EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Buffalo Ridge I produces
Free · EIA-923Net generation, 2025
106 GWh
106,300 MWh, final
Capacity factor, 2025
24.1%
2024: 18.0%
January to July 2026
57.9 GWh
Provisional
Range, 2015 to 2025
79.8–158.8
GWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | 96,251 | Not reported | 9 of 12 |
| 2010 | 147,744 | 33.5% | 12 of 12 |
| 2011 | 150,648 | 34.1% | 12 of 12 |
| 2012 | 176,473 | 39.9% | 12 of 12 |
| 2013 | 138,481 | 31.4% | 12 of 12 |
| 2014 | 143,635 | 32.5% | 12 of 12 |
| 2015 | 149,764 | 33.9% | 12 of 12 |
| 2016 | 158,762 | 35.9% | 12 of 12 |
| 2017 | 147,796 | 33.5% | 12 of 12 |
| 2018 | 149,655 | 33.9% | 12 of 12 |
| 2019 | 141,037 | 31.9% | 12 of 12 |
| 2020 | 115,298 | 26.0% | 12 of 12 |
| 2021 | 80,932 | 18.3% | 12 of 12 |
| 2022 | 90,881 | 20.6% | 12 of 12 |
| 2023 | 94,481 | 21.4% | 12 of 12 |
| 2024 | 79,785 | 18.0% | 12 of 12 |
| 2025 | 106,300 | 24.1% | 12 of 12 |
| 2026 (provisional, partial year) | 57,863 | 22.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Onshore Wind Turbine | 50.4 | April 2009 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Avangrid Power LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Buffalo Ridge I
More plants operated by Avangrid Power LLC
Questions about Buffalo Ridge I
How much power does Buffalo Ridge I LLC produce?
Buffalo Ridge I LLC reported 106,300 MWh (106 GWh) of net generation in 2025, a 24.1% capacity factor on 50.4 MW of nameplate capacity. From January to July 2026 it reported 57.9 GWh, which is provisional.
Where is Buffalo Ridge I LLC?
Buffalo Ridge I LLC is in Brookings County, South Dakota, at 44.4328, −96.4779. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Buffalo Ridge I LLC?
EIA-860M for August 2026 lists Avangrid Power LLC as the operator (EIA operator ID 15399). The operator is not always the owner.
When did Buffalo Ridge I LLC start operating?
Its first generator began operating in April 2009, according to EIA-860M.
Does InfraMap have power prices for Buffalo Ridge I LLC?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Buffalo Ridge I LLC, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page