Briefing on McWilliams

McWilliams is a 654 MW natural gas plant in Alabama, owned by PowerSouth Energy Cooperative, that has been operating since 1954 with a strong capacity factor of 61.1%.

Overview

• McWilliams is a 654 MW natural gas plant located in Alabama.

• It has been operating since 1954 and is currently in operation.

• The plant is owned and operated by PowerSouth Energy Cooperative.

Fleet Details

• The facility consists of 7 generators utilizing Natural Gas Fired Combined Cycle technology.

• It is connected to the SERC NERC grid and the Southern Company Services, Inc. - Trans. BA grid.

Generation and Performance

• McWilliams has an annual generation of 3514 GWh with a capacity factor of 61.1%.

• Recent monthly generation figures include 336 GWh in October 2025, 103 GWh in November 2025, and 302 GWh in December 2025.

Financial Profile

• The plant's Capital Expenditure (CapEx) is estimated at $965/kW, sourced from eia_agg_cost.

McWilliams is a long-standing and significant natural gas asset for PowerSouth Energy Cooperative, demonstrating consistent generation performance with a notable capacity factor. Its established operational history and substantial CapEx suggest a continued role in the regional energy supply.