Big Turtle Wind Farm, LLC
Huron County, Michigan · EIA plant ID 58891 · Operator: DTE Sustainable Generation
Nameplate20MWSummer 20 MW
Generators1in service
Net generation76GWh12 mo to Dec 2025
Capacity factor17%wind units, summer MW
Heat rate—thermal plants only
First online2014
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) |
|---|---|---|---|
| 2014 | 3.3 | 22.2% | — |
| 2015 | 76.9 | 43.9% | — |
| 2016 | 79.4 | 33.0% | — |
| 2017 | 186.9 | 43.2% | — |
| 2018 | 181.2 | 41.9% | — |
| 2019 | 71.5 | 16.5% | — |
| 2020 | 66.5 | 15.3% | — |
| 2021 | 57.4 | 32.8% | — |
| 2022 | 61.7 | 35.2% | — |
| 2023 | 66.1 | 37.7% | — |
| 2024 | 69.9 | 39.8% | — |
| 2025 | 75.6 | 43.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BTWF1 | Onshore Wind Turbine | WT | 20 | 20 | Dec 2014 | Operating | — | gamesa G114-2.0 |
| BTWF2 | Onshore Wind Turbine | WT | 29.4 | 29.4 | Oct 2016 | not_current | — | gamesa G114-2.0 |
Owner / operator
Operator: DTE Sustainable Generation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| DTE Sustainable Generation | 100.0% | 20 MW |
Nearby plants
Within 80 km.
| Sigel Wind Park | 64 MW | 0.1 km |
| Big Turtle Wind Farm 2 | 29 MW | 7.7 km |
| Deerfield Wind Energy 2 | 112 MW | 11.3 km |
| Deerfield Wind Energy, LLC | 149 MW | 13.8 km |
| Ubly | 12 MW | 19.1 km |
| Minden Wind Park | 32 MW | 20.2 km |