Carpenter
Garland County, Arkansas · EIA plant ID 166 · Operator: Entergy Arkansas Inc
Nameplate56MWSummer 60 MW
Generators2in service
Net generation147GWh12 mo to Dec 2025
Capacity factor28%hydro units, summer MW
Heat rate—thermal plants only
First online1932
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 113.5 | 22.7% | — |
| 2002 | 118.4 | 22.9% | — |
| 2003 | 79 | 15.3% | — |
| 2004 | 111.9 | 21.6% | — |
| 2005 | 72.8 | 14.1% | — |
| 2006 | 51.7 | 10.0% | — |
| 2007 | 104.7 | 20.3% | — |
| 2008 | 150 | 28.9% | — |
| 2009 | 186.2 | 36.0% | — |
| 2010 | 111.8 | 20.6% | — |
| 2011 | 100.4 | 18.5% | — |
| 2012 | 81 | 14.9% | — |
| 2013 | 101 | 18.5% | — |
| 2014 | 107 | 19.8% | — |
| 2015 | 105 | 19.4% | — |
| 2016 | 70 | 12.9% | — |
| 2017 | 70.9 | 13.6% | — |
| 2018 | 124.1 | 23.0% | — |
| 2019 | 76.1 | 14.1% | — |
| 2020 | 155.3 | 28.7% | — |
| 2021 | 138.5 | 25.6% | — |
| 2022 | 112.7 | 21.1% | — |
| 2023 | 150.6 | 28.2% | — |
| 2024 | 102.4 | 19.3% | — |
| 2025 | 147.2 | 27.8% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 28 | 30.1 | Jan 1932 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 28 | 30.3 | Jan 1932 | Operating | — | coming soon |
Owner / operator
Operator: Entergy Arkansas Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Entergy Arkansas Inc | 100.0% | 56 MW |
Nearby plants
Within 80 km.
| Lake Catherine | 553 MW | 11.2 km |
| Ironwood Power Station | — | 11.2 km |
| Remmel | 9 MW | 12.2 km |
| Hot Springs 2020 | 1 MW | 15.7 km |
| Magnet Cove | 746 MW | 17.9 km |
| Blakely Mountain | 75 MW | 21 km |