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654 MW Natural Gas operating in Covington, AL — Southern Company Services, Inc. - Trans
654 MW
Nameplate Capacity
7
Generators
units
Natural Gas Fired Combined Cycle
Technology
1954
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | PowerSouth Energy Cooperative | PowerSouth Energy Cooperative | — |
| Owner(s) | PowerSouth Energy Cooperative | PowerSouth Energy Cooperative | — |
| Status | Operating | — | — |
The McWilliams plant is a 654 MW natural gas-fired combined cycle power plant located in Covington County, Alabama. It began operating in 1954 and consists of 7 generators. The plant is owned and operated by PowerSouth Energy Cooperative. McWilliams is ranked as the 15th largest power plant in Alabama out of 21, and 356th nationally out of 945 plants.
The plant operates within the Southern Company Services, Inc. - Trans balancing authority and the SERC NERC region. In the latest year of reported data, McWilliams generated 3,514,429 MWh of electricity, achieving a capacity factor of 61.1%.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
302.5K MWh
Latest Month
3.5M MWh
Annual Generation
61.1%
Capacity Factor
CO₂ Intensity
956 lb/MWh
NOx
0.124 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $631.2M
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-04-09
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ask pi about McWilliamsSouthern Company Services, Inc. - Trans (SOCO)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Cooperative
Sector
Electric Utility
0.005 lb/MWh
CH₄
0.017 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
58.4%
Annual Net Gen
3343 GWh
CO₂eq
957 lb/MWh
Subregion
SERC South