PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/56328
EIA plant 56328
Tontitown · Washington · AR
Harry D Mattison Gas Plant
Operated by Southwestern Electric Power Co
Published location
Where is Harry D Mattison Gas Plant?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
36.185500, -94.284100
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 27,977 MWh |
| 2 | 0 MWh |
| 3 | 0 MWh |
| 4 | 18,583 MWh |
| 5 | 15,892 MWh |
| 6 | 22,217 MWh |
| 7 | 44,409 MWh |
| 8 | 77,697 MWh |
| 9 | 17,949 MWh |
| 10 | 40,638 MWh |
| 11 | 13,321 MWh |
| 12 | 0 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 3 | Natural Gas Fired Combustion Turbine | NG | 88 | SB |
| 4 | Natural Gas Fired Combustion Turbine | NG | 88 | SB |
| 1 | Natural Gas Fired Combustion Turbine | NG | 86.5 | SB |
| 2 | Natural Gas Fired Combustion Turbine | NG | 86.5 | SB |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
56328
Sector
Electric Utility
Water source
Unavailable
Data edition
2024-final