Southwestern Electric Power Co — Operated Plants

13 plants · 7.1 GW total capacity · across 4 states

Southwestern Electric Power Co operates 13 power plants with 7.1 GW total capacity. Primarily natural gas (7 plants, 3 GW). Parent organization: American Electric Power Company.

Largest is Welsh (1116 MW Sub. Coal); oldest active is Lieberman (1957); newest is Wagon Wheel Wind (2025); top state is Texas (5 plants).