Buffalo Ridge I LLC
Brookings County, South Dakota · EIA plant ID 56792 · Operator: Avangrid Renewables Inc
Nameplate50MWSummer 50 MW
Generators1in service
Net generation97GWh12 mo to Aug 2026
Capacity factor22%wind units, summer MW
Heat rate—thermal plants only
First online2009
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), wind units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2009 | 96.3 | 28.9% | — |
| 2010 | 147.7 | 33.5% | — |
| 2011 | 150.6 | 34.1% | — |
| 2012 | 176.5 | 39.9% | — |
| 2013 | 138.5 | 31.4% | — |
| 2014 | 143.6 | 32.5% | — |
| 2015 | 149.8 | 33.9% | — |
| 2016 | 158.8 | 35.9% | — |
| 2017 | 147.8 | 33.5% | — |
| 2018 | 149.7 | 33.9% | — |
| 2019 | 141 | 31.9% | — |
| 2020 | 115.3 | 26.0% | — |
| 2021 | 80.9 | 18.3% | — |
| 2022 | 90.9 | 20.6% | — |
| 2023 | 94.5 | 21.4% | — |
| 2024 | 79.8 | 18.0% | — |
| 2025 | 106.3 | 24.1% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 50.4 | 50.4 | Apr 2009 | Operating | — | suzlon S88-2100 |
Owner / operator
Operator: Avangrid Renewables Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Avangrid Renewables Inc | 100.0% | 50 MW |
Nearby plants
Within 80 km.
| Julia Hills LLC | 2 MW | 2.8 km |
| Jack River LLC | 2 MW | 3.1 km |
| Sun River LLC | 2 MW | 3.4 km |
| Shaokatan Hills LLC | 12 MW | 3.6 km |
| Tsar Nicholas LLC | 2 MW | 3.7 km |
| Jessica Mills LLC | 2 MW | 3.8 km |