- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Whillock: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Whillock
Power plant · Hydro
Key facts
Power plant · Hydroran 46% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1993
- Net generation, 2025
- 130,902 MWh
- Grid
- 161 kV to Entergy Arkansas Inc (MISO)
- Location
- Conway County, Arkansas
- Operated by
- Arkansas Electric Coop CorpSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 130,902
MWh - Fuel burned, 2025
- 446,638
MMBtu - Capacity factor, 2025
- 46.1
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 130,902 | 446,638 | 46.1% | — |
| 2024 | 139,251 | 475,125 | 48.9% | — |
| 2023 | 135,278 | 461,568 | 47.7% | — |
| 2022 | 103,688 | 353,784 | 36.5% | — |
| 2021 | 132,250 | 1,169,620 | 46.6% | — |
| 2020 | 131,440 | 1,152,336 | 46.2% | — |
| 2019 | 122,040 | 1,086,769 | 43.0% | — |
| 2018 | 162,795 | 1,482,085 | 57.4% | — |
| 2017 | 121,740 | 1,121,590 | 42.9% | — |
| 2016 | 169,672 | 1,566,413 | 59.6% | — |
| 2015 | 102,453 | 954,760 | 36.1% | — |
| 2014 | 153,723 | 1,461,904 | 54.2% | — |
| 2013 | 144,880 | 1,382,302 | 51.0% | — |
| 2012 | 85,275 | 811,478 | 30.0% | — |
| 2011 | 111,809 | 1,086,338 | 39.4% | — |
| 2010 | 148,926 | 1,452,921 | 52.5% | — |
| 2009 | 148,268 | 1,447,096 | 52.2% | — |
| 2008 | 104,025 | 1,025,062 | 36.5% | — |
| 2007 | 120,048 | 1,186,554 | 42.3% | — |
| 2006 | 166,646 | 1,652,962 | 58.7% | — |
| 2005 | 137,580 | 1,375,662 | 48.5% | — |
| 2004 | 144,739 | 1,450,574 | 50.9% | — |
| 2003 | 159,066 | 1,628,995 | 56.0% | — |
| 2002 | 129,562 | 1,318,034 | 45.6% | — |
| 2001 | 124,924 | 1,290,840 | 44.0% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)