Company Overview Fact Sheet As of June 2019

Company Overview Fact Sheet as of June 2019

Electric Operating Companies Only electric utility in the U.S. developing a portfolio of generation resources – natural gas, nuclear, and renewables such as wind and solar – together with an emphasis on energy efficiency.

Gas 14% Coal 16% 47% Nuclear

Renewables 23% and other

as of March 31, 2019 An Industry Powerhouse (Source: 10-Q) Southern Company Gas America’s premier energy company, with 44,000 A natural gas distribution system that includes four state- megawatts of electric generating capacity and 1,500 billion regulated local distribution companies (LDCs), serving 4.2 million customers. Gas pipeline investments include investments in six cubic feet of combined natural gas consumption and pipelines, including Southern Natural Gas. Gas marketing services throughput volume serving 9 million customers through complement LDCs and pipeline investments. its subsidiaries; a competitive generation company serving Southern Power wholesale customers across America and a nationally America’s premier wholesale energy partner investing in clean recognized provider of customized energy solutions, as energy solutions for customers. Southern Power is a leading well as fiber optics and wireless communications. U.S. wholesale energy provider meeting the electricity needs of municipalities, electric cooperatives, investor-owned utilities and other energy customers.

PowerSecure 44,000 MW Provides energy technologies and services to electric utilities and their large industrial, commercial, institutional and of generating capacity municipal customers. Customer solutions include distributed generation systems, utility infrastructure solutions and energy efficiency products and services.

Growth in Renewables More than 6,500 megawatts of announced or added Capabilities in 9 Million renewable capacity since 2012. This includes the largest 50 States customers voluntary solar portfolio in the U.S. at Georgia Power. Research and Development • Industry leader in conducting robust research, development and deployment of new, innovative energy technologies. Approximately 7 • Greenhouse gas emissions reduction is a major focus of 29,000 electric & natural the company’s research and development organization, which has a historic record of technology advancement employees gas utilities that goes back to the 1960s.

Building the future of energy Company Overview Fact Sheet as of June 2019

Southern Company System

Electrc Servce Terrtor

Gs 3 SP Servce Terrtor 9

Southern Nturl SP 9 3 Gs SS 1 7 Southern SS Compn STO LNG STO 1 21 Gs SS

STO 3 SS 7 Ppelne 1 STO 11 Pro ects

4 STO 21 2 Southern SP SS SP 3 SP 3 STO 74 Power SP SP 4 SP SP STO STO SP SP SP SouthStr SP SP SP SP SP SP SS Ener SP SP SS SP SP SP 224 7 Servces LNG SP SS SP 1 21 LNG SP 11 59 SS Sequent 31 SP SP SE Ener SP SP SP SP 1 LNG Mnement SP LNG LNG SP SP SS SP SS SP SP SP SP LNG SP SP SP LNG SP 17 Plnts SP SP 44 10 SP LNG SP 3 Nturl Gs HAWAII SP 931 STO STO STO Store SE SS Fcltes

18 PowerSecure Owned & PUERTO RICO # Mned Stes

See “Our Subsidiaries” for details on operations in each state. southerncompany.com/about-us/our-business/service-territory

Major Subsidiaries

Alabama Power 1.4 million electric utility customers Southern Company Gas 4.2 million natural gas

Georgia Power 2.5 million electric utility customers distribution customers in four state-regulated,

Mississippi Power 188,000 electric utility customers wholesale and retail energy businesses and gas storage 12,800 MW of wholesale solar, wind, biomass and natural gas in Southern Power facilities across the U.S. 9 states A national leader in distributed infrastructure technologies doing PowerSecure • Atlanta Gas Light (GA) business in 32 states • Chattanooga Gas (TN) Southern Nuclear An innovative leader among the nation’s nuclear energy industry • Nicor Gas (IL)

Southern Linc Wireless communications service • Virginia Natural Gas (VA)