Whillock
Hydro power plant in Conway County, Arkansas. 32.4 MW of nameplate capacity across 3 generators, operated by Arkansas Electric Coop Corp.
Also known as Whillock Hydroelectric Plant · EIA plant 7135
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 32.4 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- October 1993First generator online
- Operator
- Arkansas Electric Coop CorpEIA operator ID 807
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Conway County, AR35.1276, −92.7903
- EIA plant ID
- 7135EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Whillock produces
Free · EIA-923Net generation, 2025
131 GWh
130,902 MWh, final
Capacity factor, 2025
46.1%
2024: 48.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
102.5–169.7
GWh a year. Low 2015, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 136,520 | Not reported | 12 of 12 |
| 2001 | 124,924 | Not reported | 12 of 12 |
| 2002 | 129,562 | Not reported | 12 of 12 |
| 2003 | 159,066 | Not reported | 12 of 12 |
| 2004 | 144,739 | Not reported | 12 of 12 |
| 2005 | 137,580 | Not reported | 12 of 12 |
| 2006 | 166,646 | Not reported | 12 of 12 |
| 2007 | 120,048 | Not reported | 12 of 12 |
| 2008 | 104,025 | Not reported | 12 of 12 |
| 2009 | 148,268 | Not reported | 12 of 12 |
| 2010 | 148,926 | 52.5% | 12 of 12 |
| 2011 | 111,809 | 39.4% | 12 of 12 |
| 2012 | 85,275 | 30.0% | 12 of 12 |
| 2013 | 144,880 | 51.0% | 12 of 12 |
| 2014 | 153,723 | 54.2% | 12 of 12 |
| 2015 | 102,453 | 36.1% | 12 of 12 |
| 2016 | 169,672 | 59.6% | 12 of 12 |
| 2017 | 121,740 | 42.9% | 12 of 12 |
| 2018 | 162,795 | 57.4% | 12 of 12 |
| 2019 | 122,040 | 43.0% | 12 of 12 |
| 2020 | 131,440 | 46.2% | 12 of 12 |
| 2021 | 132,250 | 46.6% | 12 of 12 |
| 2022 | 103,688 | 36.5% | 12 of 12 |
| 2023 | 135,278 | 47.7% | 12 of 12 |
| 2024 | 139,251 | 48.9% | 12 of 12 |
| 2025 | 130,902 | 46.1% | 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 · MISOEmissions
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 | Conventional Hydroelectric | 10.8 | October 1993 |
| 2 | Conventional Hydroelectric | 10.8 | October 1993 |
| 3 | Conventional Hydroelectric | 10.8 | October 1993 |
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 Arkansas Electric Coop Corp as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Whillock
More plants operated by Arkansas Electric Coop Corp
Questions about Whillock
How much power does Whillock produce?
Whillock reported 130,902 MWh (131 GWh) of net generation in 2025, a 46.1% capacity factor on 32.4 MW of nameplate capacity.
Where is Whillock?
Whillock is in Conway County, Arkansas, at 35.1276, −92.7903. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Whillock?
EIA-860M for August 2026 lists Arkansas Electric Coop Corp as the operator (EIA operator ID 807). The operator is not always the owner.
When did Whillock start operating?
Its first generator began operating in October 1993, according to EIA-860M.
Does InfraMap have power prices for Whillock?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Whillock, 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)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page