Oak Tree Energy
Wind power plant in Clark County, South Dakota. 19.5 MW of nameplate capacity across 1 generator, operated by RWE Clean Energy.
Also known as Oak Tree Energy Wind Farm · Oak Tree · EIA plant 59435
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 19.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2014First generator online
- Operator
- RWE Clean EnergyEIA operator ID 67192
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Clark County, SD44.9333, −97.7414
- EIA plant ID
- 59435EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Oak Tree Energy produces
Free · EIA-923Net generation, 2025
65.8 GWh
65,810 MWh, final
Capacity factor, 2025
38.5%
2024: 40.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
65.8–77.9
GWh a year. Low 2025, high 2022
| 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 | 0 | Not reported | 1 of 12 |
| 2015 | 72,005 | 42.2% | 12 of 12 |
| 2016 | 76,448 | 44.6% | 12 of 12 |
| 2017 | 73,621 | 43.1% | 12 of 12 |
| 2018 | 69,674 | 40.8% | 12 of 12 |
| 2019 | 69,976 | 41.0% | 12 of 12 |
| 2020 | 73,104 | 42.7% | 12 of 12 |
| 2021 | 71,818 | 42.0% | 12 of 12 |
| 2022 | 77,891 | 45.6% | 12 of 12 |
| 2023 | 66,695 | 39.0% | 12 of 12 |
| 2024 | 69,421 | 40.5% | 12 of 12 |
| 2025 | 65,810 | 38.5% | 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 |
|---|---|---|---|
| OTE14 | Onshore Wind Turbine | 19.5 | December 2014 |
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 RWE Clean Energy 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 Oak Tree Energy
More plants operated by RWE Clean Energy
Questions about Oak Tree Energy
How much power does Oak Tree Energy produce?
Oak Tree Energy reported 65,810 MWh (65.8 GWh) of net generation in 2025, a 38.5% capacity factor on 19.5 MW of nameplate capacity.
Where is Oak Tree Energy?
Oak Tree Energy is in Clark County, South Dakota, at 44.9333, −97.7414. It is in the Southwest Power Pool balancing area (SWPP).
Who operates Oak Tree Energy?
EIA-860M for August 2026 lists RWE Clean Energy as the operator (EIA operator ID 67192). The operator is not always the owner.
When did Oak Tree Energy start operating?
Its first generator began operating in December 2014, according to EIA-860M.
Does InfraMap have power prices for Oak Tree Energy?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Oak Tree Energy, 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