Carpenter
Hydro power plant in Garland County, Arkansas. 56 MW of nameplate capacity across 2 generators, operated by Entergy Arkansas LLC.
Also known as Carpenter Dam · EIA plant 166
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 56 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 1932First generator online
- Operator
- Entergy Arkansas LLCEIA operator ID 814
- Grid
- MISOBalancing authority MISO
- Price nodes
- 2 MISO nodesResource nodes with prices
- Location
- Garland County, AR34.4425, −93.0262
- EIA plant ID
- 166EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Carpenter produces
Free · EIA-923Net generation, 2025
147 GWh
147,244 MWh, final
Capacity factor, 2025
30.0%
2024: 20.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
70.0–155.3
GWh a year. Low 2016, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 90,763 | Not reported | 12 of 12 |
| 2001 | 113,521 | Not reported | 12 of 12 |
| 2002 | 118,376 | Not reported | 12 of 12 |
| 2003 | 79,006 | Not reported | 12 of 12 |
| 2004 | 111,893 | Not reported | 12 of 12 |
| 2005 | 72,841 | Not reported | 12 of 12 |
| 2006 | 51,743 | Not reported | 12 of 12 |
| 2007 | 104,667 | Not reported | 12 of 12 |
| 2008 | 150,044 | Not reported | 12 of 12 |
| 2009 | 186,167 | Not reported | 12 of 12 |
| 2010 | 111,812 | 22.8% | 12 of 12 |
| 2011 | 100,442 | 20.5% | 12 of 12 |
| 2012 | 81,049 | 16.5% | 12 of 12 |
| 2013 | 101,031 | 20.6% | 12 of 12 |
| 2014 | 106,981 | 21.8% | 12 of 12 |
| 2015 | 104,959 | 21.4% | 12 of 12 |
| 2016 | 70,029 | 14.2% | 12 of 12 |
| 2017 | 70,860 | 14.4% | 12 of 12 |
| 2018 | 124,077 | 25.3% | 12 of 12 |
| 2019 | 76,107 | 15.5% | 12 of 12 |
| 2020 | 155,346 | 31.6% | 12 of 12 |
| 2021 | 138,495 | 28.2% | 12 of 12 |
| 2022 | 112,694 | 23.0% | 12 of 12 |
| 2023 | 150,636 | 30.7% | 12 of 12 |
| 2024 | 102,431 | 20.8% | 12 of 12 |
| 2025 | 147,244 | 30.0% | 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 | 28.0 | January 1932 |
| 2 | Conventional Hydroelectric | 28.0 | January 1932 |
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 Entergy Arkansas LLC 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 Carpenter
More plants operated by Entergy Arkansas LLC
Questions about Carpenter
How much power does Carpenter produce?
Carpenter reported 147,244 MWh (147 GWh) of net generation in 2025, a 30.0% capacity factor on 56 MW of nameplate capacity.
Where is Carpenter?
Carpenter is in Garland County, Arkansas, at 34.4425, −93.0262. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Carpenter?
EIA-860M for August 2026 lists Entergy Arkansas LLC as the operator (EIA operator ID 814). The operator is not always the owner.
When did Carpenter start operating?
Its first generator began operating in January 1932, according to EIA-860M.
Does InfraMap have power prices for Carpenter?
Yes. InfraMap has MISO day-ahead and real-time prices at 2 price nodes linked to Carpenter, 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