Sleeping Bear LLC
Wind power plant in Harper County, Oklahoma. 94.5 MW of nameplate capacity across 1 generator, operated by NRG Energy Gas & Wind Holdings Inc.
Also known as Sleeping Bear Wind Farm · Sleeping Bear · EIA plant 56621
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 94.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 2007First generator online
- Operator
- NRG Energy Gas & Wind Holdings IncEIA operator ID 59883
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Harper County, OK36.6403, −99.5006
- EIA plant ID
- 56621EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sleeping Bear produces
Free · EIA-923Net generation, 2025
84.5 GWh
84,460 MWh, final
Capacity factor, 2025
10.2%
2024: 7.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
63.3–289.6
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 | 141,871 | Not reported | 12 of 12 |
| 2009 | 204,375 | Not reported | 12 of 12 |
| 2010 | 282,736 | 34.2% | 12 of 12 |
| 2011 | 289,099 | 34.9% | 12 of 12 |
| 2012 | 306,298 | 36.9% | 12 of 12 |
| 2013 | 308,396 | 37.3% | 12 of 12 |
| 2014 | 310,018 | 37.4% | 12 of 12 |
| 2015 | 280,617 | 33.9% | 12 of 12 |
| 2016 | 289,642 | 34.9% | 12 of 12 |
| 2017 | 274,423 | 33.2% | 12 of 12 |
| 2018 | 269,646 | 32.6% | 12 of 12 |
| 2019 | 241,080 | 29.1% | 12 of 12 |
| 2020 | 187,319 | 22.6% | 12 of 12 |
| 2021 | 90,966 | 11.0% | 12 of 12 |
| 2022 | 96,364 | 11.6% | 12 of 12 |
| 2023 | 75,357 | 9.1% | 12 of 12 |
| 2024 | 63,316 | 7.6% | 12 of 12 |
| 2025 | 84,460 | 10.2% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 · SPPEmissions
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 | 94.5 | October 2007 |
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 NRG Energy Gas & Wind Holdings Inc 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 Sleeping Bear
More plants operated by NRG Energy Gas & Wind Holdings Inc
Questions about Sleeping Bear
How much power does Sleeping Bear LLC produce?
Sleeping Bear LLC reported 84,460 MWh (84.5 GWh) of net generation in 2025, a 10.2% capacity factor on 94.5 MW of nameplate capacity.
Where is Sleeping Bear LLC?
Sleeping Bear LLC is in Harper County, Oklahoma, at 36.6403, −99.5006. It is in the Southwest Power Pool balancing area (SWPP).
Who operates Sleeping Bear LLC?
EIA-860M for August 2026 lists NRG Energy Gas & Wind Holdings Inc as the operator (EIA operator ID 59883). The operator is not always the owner.
When did Sleeping Bear LLC start operating?
Its first generator began operating in October 2007, according to EIA-860M.
Does InfraMap have power prices for Sleeping Bear LLC?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Sleeping Bear 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)
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
- Project names from the USGS U.S. Wind Turbine Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page