Southern Company operations has responsibility for more than 27,000 miles of transmission lines, 3,700 substations, and 300,000 acres of right of way. The transmission system meets North American Electric Reliability Corporation standards and provides a safe and reliable grid. We plan, design, build, operate, and, maintain our system to meet growing demand. From 2008 to 2011, Southern Company invested $2.3 billion in transmission assets (lines and substations) and distribution substations, which is managed in conjunction with transmission at Southern Company.

Business Practices

Southern Company operations conducts transmission business in accordance with the Southern Companies Open Access Transmission Tariff approved by FERC. Southern Company transmission's general business practices are posted at OASIS - General Information.

North American Energy Standards Board (NAESB) Wholesale Electric Quadrant Standards

NAESB rules, standards, and practices may be obtained at the NAESB public website. More...

Available Transfer Capability (ATC) Algorithm

Southern Company operations has posted its algorithm for calculation of the transmission system ATC. More...