Attala — Plant Summary
- EIA Plant ID
- 55220
- Capacity
- 551.3 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Attala, MS
- Operating Since
- 2001
- Generators
- 3
- Operator
- Entergy Mississippi LLC
- Parent Company
- Entergy
- Annual Generation
- 2,221,476 MWh
- Capacity Factor
- 50.2%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Attala
OperatingNatural Gas
Ranked #14 of 30 Natural Gas plants in MS#445 of 2009 nationally
551.3 MW Natural Gas operating in Attala, MS — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
551.3 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2001
Operating Since
Location
Coordinates
33.0147, -89.6753
County
Attala, MS
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Mississippi LLC | Entergy Mississippi | — |
| Owner(s) | Entergy Mississippi LLC | Entergy | — |
| Status | Operating | — | — |
Ownership Chain
About
Attala is a 551.3 MW natural gas-fired combined cycle power plant located in Attala County, Mississippi. The plant began operating in 2001 and is owned by Entergy and operated by Entergy Mississippi LLC. It consists of 3 generators. Attala operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region.
In the most recent year of data, Attala generated 2,221,476 MWh of electricity, achieving a capacity factor of 50.2%. The plant's installed cost was $200.43 per kW, according to FERC data. Attala is ranked as the 14th largest power plant out of 20 in Mississippi, and 450th out of 945 nationally.
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
83.2K MWh
Latest Month
2.2M MWh
Annual Generation
50.2%
Capacity Factor
Nov 2022 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$289/kW
Installed Cost
$18.1/MWh
Operating Cost
entergy mississippi, llc
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
McAdams Substation · 500 kV
Substation Distance
< 10 km
Operator
Entergy Mississippi
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EES.ATTALA1
Pricing Hub
MS.HUB
Node Source
EIA-860 direct report
News & Articles (10)Beta
Regulatory·permitting
Texas Eastern To Fuel Mississippi’s Next-Gen Energy
Texas Eastern Transmission LP is requesting FERC authorization for its proposed Line 31 Expansion Project in Madison County, Mississippi.
Texas Eastern Transmission LP (developer)FERC (regulator)
Gas Compression Magazine·4 weeks ago
Grid·outage
Planned temporary power outage at Silver Star Hotel & Casino for power plant upgrade
CHOCTAW, MS (January 9, 2026) – As part of ongoing efforts to enhance the guest experience and complete the Power Plant upgrade project,...
Kicks96news.com - Central Mississippi News 24/7·2 months ago
Regulatory·permitting
Federal review begins for major natural gas pipeline project affecting Attala County
A proposed natural gas pipeline that would pass through Attala County and nearby areas has entered the federal review process.
Kicks96news.com - Central Mississippi News 24/7·3 months ago
Regulatory·permitting
Gulf South’s 111-Mile Kosciusko Junction Pipeline Enters Federal Review
FERC has launched its environmental review of Gulf South's 111-mile Kosciusko Junction Pipeline in Mississippi, marking a major step forward...
Gulf South (developer)FERC (regulator)
Pipeline and Gas Journal·3 months ago
Last updated 2026-03-14
View all 10 articles