919.1 MW Natural Gas Fired Combustion Turbine (42 MW) + Natural Gas Steam Turbine (877 MW) operating in Harrison, MS — Southern Company Services, Inc. - Trans
919.1 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Natural Gas Steam Turbine
1968
Operating Since
Coordinates
30.4392, -89.0286
County
Harrison, MS
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Mississippi Power Co | Mississippi Power | — |
| Owner(s) | Mississippi Power Co | Southern | — |
| Status | Operating | — | — |
The Jack Watson plant is a 919.1 MW hybrid natural gas power plant located in Harrison County, Mississippi. It began operating in 1968 and is owned by Southern Company and operated by Mississippi Power Co. The plant utilizes both natural gas-fired combustion turbine and natural gas steam turbine technologies across its three generators. It ranks as the third-largest power plant in Mississippi out of 20, and 197th nationally out of 945 plants.
In the most recent year of data, the Jack Watson plant generated 2,633,847 MWh of electricity, achieving a capacity factor of 32.6%. The plant operates within the Southern Company Services, Inc. - Trans balancing authority and is located in the SERC NERC region. Recent news coverage of the plant includes hazards and regulatory issues.
Generated from EIA, GEM, and public data sources
NERC Region
SERC
Balancing Authority
Southern Company Services, Inc. - Trans
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
87.4K MWh
Latest Month
2.6M MWh
Annual Generation
32.6%
Capacity Factor
No financial data available for this plant.
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
U.S.-Japan investment framework takes shape around massive natural gas power projects
A 9.2 GW project in southern Ohio and up to 10 GW of NextEra hubs in Texas and Pennsylvania mark the first concrete steps under Japan's $550 billion U.S. commitment
U.S.-Japan investment framework takes shape around massive natural gas power projects
A 9.2 GW project in southern Ohio and up to 10 GW of NextEra hubs in Texas and Pennsylvania mark the first concrete steps under Japan's $550 billion U.S. commitment
U.S.-Japan investment framework takes shape around massive natural gas power projects
A 9.2 GW project in southern Ohio and up to 10 GW of NextEra hubs in Texas and Pennsylvania mark the first concrete steps under Japan's $550 billion U.S. commitment
U.S.-Japan investment framework takes shape around massive natural gas power projects
A 9.2 GW project in southern Ohio and up to 10 GW of NextEra hubs in Texas and Pennsylvania mark the first concrete steps under Japan's $550 billion U.S. commitment
Last updated 2026-03-25
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