Arkansas Nuclear One — Plant Summary
- EIA Plant ID
- 8055
- Capacity
- 1845 MW
- Primary Fuel
- Nuclear
- Technology
- Nuclear
- Status
- Operating
- Location
- Pope, AR
- Operating Since
- 1974
- Generators
- 2
- Operator
- Entergy Arkansas LLC
- Parent Company
- Entergy
- Annual Generation
- 15,193,050 MWh
- Capacity Factor
- 93.6%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Arkansas Nuclear One
OperatingNuclear
Ranked #1 of 1 Nuclear plants in AR#31 of 57 nationally
1845 MW Nuclear operating in Pope, AR — Midcontinent Independent Transmission System Operator, Inc..
EIAGEMWD
1,845 MW
Nameplate Capacity
2
Generators
units
Nuclear
Technology
1974
Operating Since
Location
Coordinates
35.3110, -93.2351
County
Pope, AR
Nearby Plants
- DardanelleHydro160.8 MW · 9.1 km
- Scenic Hill Solar IV, LLCSolar2.2 MW · 25.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Arkansas LLC | Entergy Nuclear Operations | Entergy |
| Owner(s) | Entergy Arkansas LLC | Entergy | — |
| Status | Operating | operating | — |
Ownership Chain
About
Arkansas Nuclear One (ANO) is a two-unit pressurized water nuclear power plant located on Lake Dardanelle outside Russellville, Arkansas. It is owned by Entergy Arkansas and operated by Entergy Nuclear. It is the only nuclear power facility in Arkansas. ANO has been in continuous operation for 50 years as of December 17, 2024.
Read more on WikipediaArkansas Nuclear One is a nuclear power plant located in Pope County, Arkansas. The plant, which began operating in 1974, has a total capacity of 1845 MW across two nuclear generators. It is owned by Entergy and operated by Entergy Arkansas LLC. Arkansas Nuclear One is the largest power plant in Arkansas and ranks 30th out of 55 nuclear plants nationally.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. In the latest year of reported generation, Arkansas Nuclear One produced 15,193,050 MWh, achieving a capacity factor of 93.6%. Financial data indicates an installed cost of $1429.56 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
500 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
1.4M MWh
Latest Month
15.2M MWh
Annual Generation
93.6%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$2,179/kW
Installed Cost
$22.2/MWh
Operating Cost
Entergy Arkansas, Inc.
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Arkansas Nuclear One Substation · 500 kV
Substation Distance
< 10 km
Operator
Entergy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EAI.ANO2
Pricing Hub
ARKANSAS.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
Industry·technology
Mini-Reactors Coming to Arkansas?
In October, the Arkansas state legislature's Joint Energy Committee hired a Maryland firm to study the feasibility of adopting small...
Arkansas (other)
Arkansas Money & Politics·3 months ago
Industry·capacity addition
State lawmakers explore bringing small nuclear reactors to Arkansas
State lawmakers have hired a firm to conduct a feasibility study on the potential construction of new, high-tech nuclear power plants in...
KATV·5 months ago
Industry·capacity addition
Arkansas panel votes to study building more nuclear power
Arkansas is one step closer to understanding the feasibility of building more nuclear power to address its growing electricity needs,...
Arkansas Advocate·6 months ago
Hazards·flooding
"Stuck gate closed' Officials confirm Dardanelle Lock and Dam situation over
The U.S. Army Corps of Engineers Little Rock District has successfully closed spillway gate 20 at Dardanelle Lock and Dam on the Arkansas...
U.S. Army Corps of Engineers (other)
KHBS·7 months ago
Last updated 2026-03-14
View all 10 articles