Arkansas Nuclear One
Pope County, Arkansas · EIA plant ID 8055 · Operator: Entergy Arkansas Inc
Nameplate1,845MWSummer 1,807 MW
Generators2in service
Net generation14,088GWh12 mo to Aug 2026
Capacity factor89%nuclear units, summer MW
Heat rate—thermal plants only
First online1974
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), nuclear 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 | 14,780.8 | 94.7% | — |
| 2002 | 14,558.9 | 93.6% | — |
| 2003 | 14,689.4 | 91.1% | — |
| 2004 | 15,449.9 | 95.8% | — |
| 2005 | 13,689.6 | 85.2% | — |
| 2006 | 15,232.6 | 95.3% | — |
| 2007 | 15,486.1 | 96.2% | — |
| 2008 | 14,168.1 | 87.7% | — |
| 2009 | 15,170 | 94.4% | — |
| 2010 | 15,022.7 | 93.5% | — |
| 2011 | 14,194.4 | 88.9% | — |
| 2012 | 15,493.1 | 96.5% | — |
| 2013 | 11,945.3 | 75.0% | — |
| 2014 | 14,478.3 | 90.8% | — |
| 2015 | 13,837.8 | 87.4% | — |
| 2016 | 13,421 | 84.0% | — |
| 2017 | 12,691.1 | 79.7% | — |
| 2018 | 12,720.8 | 79.9% | — |
| 2019 | 13,574.9 | 85.3% | — |
| 2020 | 15,063 | 94.3% | — |
| 2021 | 13,555.7 | 85.1% | — |
| 2022 | 14,323.7 | 89.7% | — |
| 2023 | 14,972.5 | 93.7% | — |
| 2024 | 14,762.8 | 92.3% | — |
| 2025 | 15,193.1 | 96.0% | — |
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 | Nuclear | ST | 902.5 | 825.5 | Dec 1974 | Operating | — | coming soon |
| 2 | Nuclear | ST | 942.5 | 981.5 | Mar 1980 | 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% | 1,845 MW |
Nearby plants
Within 80 km.
| Dardanelle | 161 MW | 9.1 km |
| Scenic Hill Solar IV, LLC | 2 MW | 26.1 km |
| Scenic Hill Solar III | 5 MW | 30.8 km |
| City of Clarksville | 10 MW | 30.8 km |
| Whillock | 32 MW | 45.3 km |
| City of Paris Solar | 2 MW | 45.3 km |