Rattlesnake Den
Wind power plant in Glasscock County, Texas. 207.2 MW of nameplate capacity across 1 generator, operated by SunEdison LLC.
Also known as Rattlesnake Den 1 · Rattlesnake · EIA plant 59943
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 207.2 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 2015First generator online
- Operator
- SunEdison LLCEIA operator ID 59139
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 1 ERCOT nodeResource nodes with prices
- Location
- Glasscock County, TX31.7432, −101.4934
- EIA plant ID
- 59943EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Rattlesnake Den produces
Free · EIA-923Net generation, 2025
689 GWh
689,334 MWh, final
Capacity factor, 2025
38.0%
2024: 40.4%
January to July 2026
442 GWh
Provisional
Range, 2016 to 2025
491.7–884.0
GWh a year. Low 2023, 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 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 368,498 | Not reported | 6 of 12 |
| 2016 | 884,015 | 48.6% | 12 of 12 |
| 2017 | 878,567 | 48.4% | 12 of 12 |
| 2018 | 803,971 | 44.3% | 12 of 12 |
| 2019 | 718,216 | 39.6% | 12 of 12 |
| 2020 | 688,790 | 37.8% | 12 of 12 |
| 2021 | 685,735 | 37.8% | 12 of 12 |
| 2022 | 641,889 | 35.4% | 12 of 12 |
| 2023 | 491,684 | 27.1% | 12 of 12 |
| 2024 | 735,846 | 40.4% | 12 of 12 |
| 2025 | 689,334 | 38.0% | 12 of 12 |
| 2026 (provisional, partial year) | 441,875 | 41.9% | 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 · ERCOTEmissions
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 | 207.2 | July 2015 |
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 SunEdison 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 Rattlesnake Den
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Questions about Rattlesnake Den
How much power does Rattlesnake Den produce?
Rattlesnake Den reported 689,334 MWh (689 GWh) of net generation in 2025, a 38.0% capacity factor on 207.2 MW of nameplate capacity. From January to July 2026 it reported 442 GWh, which is provisional.
Where is Rattlesnake Den?
Rattlesnake Den is in Glasscock County, Texas, at 31.7433, −101.4934. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Rattlesnake Den?
EIA-860M for August 2026 lists SunEdison LLC as the operator (EIA operator ID 59139). The operator is not always the owner.
When did Rattlesnake Den start operating?
Its first generator began operating in July 2015, according to EIA-860M.
Does InfraMap have power prices for Rattlesnake Den?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 1 price node linked to Rattlesnake Den, 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)
- ERCOT 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