Harry L. Oswald
Pulaski County, Arkansas · EIA plant ID 55221 · Operator: Arkansas Electric Coop Corp
Nameplate600MWSummer 548 MW
Generators9in service
Net generation929GWh12 mo to Dec 2025
Capacity factor19%gas/coal/oil units, summer MW
Heat rate8,777Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as intermediate
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2002 | 319.8 | — | — |
| 2003 | 202.7 | 4.1% | 8,380 |
| 2004 | 0 | 0.0% | — |
| 2005 | 0 | 0.0% | — |
| 2006 | 349 | 7.0% | 8,448 |
| 2007 | 301.8 | 6.3% | 8,619 |
| 2008 | 207.4 | 4.3% | 9,350 |
| 2009 | 160.5 | 3.3% | 8,677 |
| 2010 | 458 | 9.5% | 8,613 |
| 2011 | 792.6 | 16.5% | 15,896 |
| 2012 | 356.4 | 7.4% | 8,533 |
| 2013 | 317.7 | 6.6% | 8,558 |
| 2014 | 159.2 | 3.3% | 8,586 |
| 2015 | 349.4 | 7.3% | 8,370 |
| 2016 | 519.5 | 10.8% | 8,399 |
| 2017 | 310.4 | 6.5% | 8,646 |
| 2018 | 522.5 | 10.9% | 8,605 |
| 2019 | 368.9 | 7.7% | 8,655 |
| 2020 | 479.8 | 10.0% | 8,421 |
| 2021 | 673.4 | 14.0% | 8,430 |
| 2022 | 998.5 | 20.8% | 8,610 |
| 2023 | 941 | 19.6% | 8,671 |
| 2024 | 1,149.1 | 23.9% | 8,792 |
| 2025 | 929.3 | 19.4% | 8,777 |
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 |
|---|---|---|---|---|---|---|---|---|
| G1 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G2 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G3 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G4 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G5 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G6 | Natural Gas Fired Combined Cycle | CT | 51 | 47 | Jul 2002 | Operating | — | coming soon |
| G7 | Natural Gas Fired Combined Cycle | CT | 83.5 | 76 | Jul 2002 | Operating | — | coming soon |
| G8 | Natural Gas Fired Combined Cycle | CA | 105 | 95 | Jul 2002 | Operating | — | coming soon |
| G9 | Natural Gas Fired Combined Cycle | CA | 105 | 95 | Jul 2002 | Operating | — | coming soon |
Owner / operator
Operator: Arkansas Electric Coop Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Arkansas Electric Coop Corp | 100.0% | 600 MW |
Nearby plants
Within 80 km.
| City of Little Rock Solar Array | — | 11.7 km |
| Zeuber | 5 MW | 11.9 km |
| Fourche Creek Wastewater | 1 MW | 12.5 km |
| Southside SD | 1 MW | 14.8 km |
| NLRED 2MW | 2 MW | 16.9 km |
| NLRED 5MW | 5 MW | 17.1 km |