Jack Watson
Natural gas power plant · Harrison County, Mississippi
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Steam Turbine
- Operator
- Mississippi Power Co
- County
- Harrison County
- Generating units
- 3
- Share of state capacity
- 5.07%
- Rank among natural gas plants in Mississippi
- #2 of 27
- EIA plant code
- 2049
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 5 | Natural Gas Steam Turbine | 578 MW | 485 MW | 1973 | Operating |
| 4 | Natural Gas Steam Turbine | 299 MW | 236 MW | 1968 | Operating |
| A | Natural Gas Fired Combustion Turbine | 42 MW | 33 MW | 1970 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Mississippi
| Grand Gulf | Nuclear | 1,440 MW |
| Magnolia Power Plant | Natural gas | 1,004 MW |
| TVA Southaven Combined Cycle | Natural gas | 904 MW |
| Choctaw County | Natural gas | 899 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 919 MW solar plant and a 919 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Mississippi power plants · What Mississippi actually generates