Sleeping Bear LLC
Harper County, Oklahoma · EIA plant ID 56621 · Operator: NRG Energy Gas & Wind Holdings Inc
Nameplate95MWSummer 95 MW
Generators1in service
Net generation84GWh12 mo to Dec 2025
Capacity factor10%wind units, summer MW
Heat rate—thermal plants only
First online2007
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) |
|---|---|---|---|
| 2008 | 141.9 | 17.1% | — |
| 2009 | 204.4 | 24.7% | — |
| 2010 | 282.7 | 34.2% | — |
| 2011 | 289.1 | 34.9% | — |
| 2012 | 306.3 | 36.9% | — |
| 2013 | 308.4 | 37.3% | — |
| 2014 | 310 | 37.5% | — |
| 2015 | 280.6 | 33.9% | — |
| 2016 | 289.6 | 34.9% | — |
| 2017 | 274.4 | 33.1% | — |
| 2018 | 269.6 | 32.6% | — |
| 2019 | 241.1 | 29.1% | — |
| 2020 | 187.3 | 22.6% | — |
| 2021 | 91 | 11.0% | — |
| 2022 | 96.4 | 11.6% | — |
| 2023 | 75.4 | 9.1% | — |
| 2024 | 63.3 | 7.6% | — |
| 2025 | 84.5 | 10.2% | — |
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 | 94.5 | 94.5 | Oct 2007 | Operating | — | suzlon S88-2100 |
Owner / operator
Operator: NRG Energy Gas & Wind Holdings Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| NRG Energy Gas & Wind Holdings Inc | 100.0% | 95 MW |
Nearby plants
Within 80 km.
| Centennial Wind Farm | 120 MW | 9 km |
| Oklahoma Wind Energy Center | 102 MW | 14.9 km |
| Boiling Springs Wind Farm | 148 MW | 16.5 km |
| Buffalo Bear LLC | 19 MW | 19.3 km |
| Woodward Energy Storage | 40 MW | 19.4 km |
| 25 Mile Creek | 250 MW | 27.3 km |