The Southern Company operates through several key subsidiaries, including its traditional electric operating companies—Alabama Power, Georgia Power, and Mississippi Power—which provide vertically integrated electric services. Its Southern Power subsidiary focuses on wholesale electricity generation, managing a diverse portfolio of natural gas, nuclear, coal, and renewable energy assets. Additionally, Southern Company Gas distributes natural gas to customers across states such as Georgia, Illinois, Virginia, and Tennessee. The company is notable for its recent completion of the Vogtle nuclear plant expansion, which provides large-scale carbon-free baseload power to its grid. With an extensive infrastructure network and a focus on regulated utility operations, Southern Company maintains a dominant position in the U.S. energy sector.