# Harry L. Oswald

MISO asset profile · https://askthegrid.com/assets/facilities/harry-l-oswald

## Current generation inventory

EIA plant 55221 · Inventory reporting month: 2026-08.

- natural gas: 599.5 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -92.2166, 34.5923
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-01-25 04:37:37+00:00
- Map prepared: 2026-10-10T02:28:24.656427+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Harry L. Oswald Generating Station is a natural gas-fired plant in Wrightsville, Arkansas, just outside Little Rock. Arkansas Electric Cooperative Corporation, the generation and transmission cooperative for the state's 17 local electric distribution cooperatives, owns it. The station utilizes natural gas as its fuel source and has operated since 2003, and the cooperative lists its capability at 548 MW. Arkansas Electric Cooperative Corporation owns the plant outright alongside its other natural gas stations.

## Reviewed metrics

- **Nameplate capacity:** 599.5 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 55221 — plant-55221

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** Arkansas Electric Coop Corp

## Related parties

- **Owner:** Arkansas Electric Cooperative Corporation — owner ([source](https://www.aecc.com))

## Sources

- [events.vtools.ieee.org](https://events.vtools.ieee.org/m/179126) — events.vtools.ieee.org · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/harry-l-oswald
Website: [Arkansas Electric Cooperative Corporation](https://www.aecc.com)

Source: Ask the Grid — https://askthegrid.com/