Harry L. Oswald — Plant Summary
- EIA Plant ID
- 55221
- Capacity
- 599.5 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Pulaski, AR
- Operating Since
- 2002
- Generators
- 9
- Operator
- Arkansas Electric Coop Corp
- Parent Company
- —
- Annual Generation
- 1,149,051 MWh
- Capacity Factor
- 21.8%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Harry L. Oswald
OperatingNatural Gas
Ranked #5 of 18 Natural Gas plants in AR#399 of 2009 nationally
599.5 MW Natural Gas operating in Pulaski, AR — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
599.5 MW
Nameplate Capacity
9
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Location
Coordinates
34.5923, -92.2166
County
Pulaski, AR
Nearby Plants
- ZeuberSolar4.6 MW · 11.9 km
- Southside SDSolar1 MW · 14.8 km
- NLRED 2MWSolar2 MW · 16.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arkansas Electric Coop Corp | — | — |
| Owner(s) | Arkansas Electric Coop Corp | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Harry L. Oswald power plant is a 599.5 MW natural gas-fired combined cycle facility located in Pulaski County, Arkansas. It began operating in 2002 and is owned and operated by Arkansas Electric Cooperative Corporation. The plant consists of 9 generators utilizing natural gas as its primary fuel source. It is located within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC Reliability Corporation NERC region.
In the most recent year of record, the Harry L. Oswald plant generated 1,149,051 MWh of electricity, achieving a capacity factor of 21.8%. The plant ranks as the 5th largest out of 12 power plants in the state of Arkansas, and 404th out of 945 plants nationally. Recent news coverage of the plant includes 1 article related to industry trends and 1 article related to regulatory matters.
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
Cooperative
Sector
Electric Utility
Generation
39.2K MWh
Latest Month
1.1M MWh
Annual Generation
21.8%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Wrightsville Substation · 500 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EAI.CC.AECCWRT
Pricing Hub
ARKANSAS.HUB
Node Source
EIA-860 direct report
News & Articles (2)Beta
Regulatory·federal policy
Arkansas files federal lawsuit against EPA over Arkansas’ rejected ozone plan
Arkansas is suing the Biden EPA over its rejection of some of the state's air quality plans, Gov. Sarah Huckabee Sanders announced.
Arkansas (other)EPA (regulator)
Arkansas Advocate·3 years ago
Industry·other
Power Balance Shifting In Arkansas: Coal Crucial But Losing Ground
King Coal isn't dead, but it's being dethroned as the top fuel source for creating electric power in Arkansas.
Arkansas Business·7 years ago
Last updated 2026-03-14
View all articles