Southern Company is one of the largest electric and gas utility holding companies in the United States, serving approximately 9 million customers across the Southeast and Midwest. The company operates three regulated electric utilities — Georgia Power, Alabama Power, and Mississippi Power — along with four gas distribution companies under the Southern Company Gas umbrella, and a wholesale power subsidiary called Southern Power. Its nuclear operations are managed by Southern Nuclear, which runs the company's nuclear fleet, including the newly completed Vogtle Units 3 and 4 in Georgia.
Southern Company has been led by President and CEO Christopher Womack since May 2023, when he succeeded Tom Fanning. Womack previously served as president of Georgia Power. The company is one of the most capital-intensive utilities in the country, with a five-year investment plan of $48 billion through 2028 covering grid modernization, generation additions, and infrastructure upgrades across its service territory.
The company's service territory spans some of the fastest-growing regions in the U.S. Georgia in particular has attracted significant manufacturing investment and data center development over the past several years. Georgia Power's 2023 Integrated Resource Plan update projected 6,600 MW of additional load through the winter of 2030/31, roughly 17 times the load growth estimate from its prior 2022 IRP. That revision has reshaped the company's near-term generation procurement strategy.
Georgia Power, Alabama Power, and Mississippi Power are vertically integrated regulated utilities operating under state public service commission oversight. Each owns generation, transmission, and distribution assets and earns a regulated return on its rate base. Georgia Power is the largest subsidiary, serving roughly 2.7 million customers across most of Georgia. Alabama Power serves approximately 1.5 million customers across the southern two-thirds of Alabama. Mississippi Power is the smallest, serving roughly 190,000 customers along the Gulf Coast. The three utilities together produce the dominant share of Southern Company's earnings, with allowed returns set by state regulators through periodic rate cases.
Southern Company Gas is the holding company for four regulated gas distribution utilities: Atlanta Gas Light (Georgia), Nicor Gas (Illinois), Virginia Natural Gas (Virginia), and Chattanooga Gas (Tennessee). Nicor Gas is by far the largest, serving roughly 2.2 million customers across the Chicago metropolitan area and most of Illinois, making it one of the largest gas distribution companies in the Midwest. Southern Company Gas also operates midstream gas pipeline and storage assets. Collectively, the gas subsidiaries deliver natural gas to approximately 4.4 million customers and contribute a meaningful but smaller share of total earnings than the electric utilities.
Southern Power is the company's competitive wholesale generation subsidiary, with approximately 13,150 MW across 55 facilities in 15 states. Its portfolio includes 7,380 MW of natural gas, 3,050 MW of solar, and 2,533 MW of wind. Southern Power sells electricity under long-term contracts to utilities, cooperatives, and municipalities. Southern Nuclear operates the company's full nuclear fleet: Plant Vogtle in Georgia (now four units, including the newly completed AP1000 reactors), Plant Hatch in Georgia, and Plant Farley in Alabama. Vogtle Units 3 and 4 are the first new nuclear reactors to reach commercial operation in the U.S. in over 30 years.
Southern Company reported FY2024 revenue of $26.7 billion, up 5.8% from $25.3 billion in FY2023. Net income was $4.4 billion, up approximately 10% year over year, with diluted earnings per share of $4.02 (adjusted EPS of $4.05). The improvement reflected higher allowed returns at the regulated utilities following rate case settlements, increased nuclear generation output as the Vogtle units ramped to full capacity, and continued growth in the company's service territory.
Long-term debt stood at approximately $59.9 billion as of mid-2024, reflecting decades of capital investment as well as the cost overruns on Vogtle. The debt-to-equity ratio of approximately 1.77x is elevated but consistent with capital-intensive regulated utility operations. Southern Company's capital structure is supported by investment-grade credit ratings and the predictability of rate base earnings at the subsidiary level.
The five-year capital plan of $48 billion is one of the largest among U.S. utilities by absolute dollar volume. The spending is concentrated in transmission and distribution upgrades, renewable generation additions, and grid modernization to accommodate the load growth being driven by data center development in Georgia and broader economic expansion across the service territory. Executing that plan requires sustained regulatory support for rate base recovery at each operating subsidiary.
The construction of Vogtle Units 3 and 4 near Waynesboro, Georgia was the most consequential and complicated project in Southern Company's history. The two AP1000 pressurized water reactors, each approximately 1,100 MW, were originally planned to enter commercial service in 2016 and 2017 at a combined cost of roughly $14 billion. Unit 3 achieved commercial operation in July 2023. Unit 4 followed in April 2024. Total project cost exceeded $30 billion, with Georgia Power's net share reaching approximately $10.65 billion.
The overruns reflected the near-total absence of new nuclear construction experience in the U.S. workforce, persistent supply chain failures for first-of-a-kind AP1000 components, the 2017 bankruptcy of the original contractor Westinghouse Electric, and difficult site conditions. Toshiba, Westinghouse's corporate parent, settled with Southern Company for approximately $3.7 billion before the project completed. The Georgia Public Service Commission approved a 2023 settlement allowing Georgia Power to recover $2.1 billion in capital costs in rate base, with a hard cap on further regulatory recovery. Approximately $1.2 billion in costs will not be recoverable from ratepayers.
With all four units now operational, Plant Vogtle is the largest nuclear power plant in the United States by capacity at approximately 4.4 GW. The completed new units produce zero-carbon baseload power with a projected 20-to-40-year operating life, and their output is contracted through the Southern Company system. At a time when demand for firm, non-intermittent clean power is rising from data centers and industrial customers, the fully operational Vogtle fleet is a structural asset regardless of the painful construction history.
Southern Company's near-term strategy is centered on building generation capacity fast enough to serve the load growth concentrated in Georgia. The 2023 IRP update called for advancing resource procurement by roughly three years relative to prior plans. Georgia Power is adding natural gas peaking and combined-cycle capacity, utility-scale solar and battery storage, and evaluating additional nuclear options including small modular reactors. Long-term demand commitments from data center operators and manufacturing facilities underpin the load forecasts.
The longer-term trajectory depends significantly on rate case outcomes across the three electric utilities. Recovering $48 billion in capital investment over five years requires Georgia Power, Alabama Power, and Mississippi Power to win rate cases that approve new investments at reasonable allowed returns. Southern Company has generally had constructive regulatory relationships in its states, but the scale of capital being deployed creates rate affordability tension as customers see rising bills. The company is also retiring coal capacity aggressively, targeting an 80% reduction from 2007 levels by 2028, which requires replacement generation to be in place before each unit comes offline.
Vogtle's construction is complete, but cost recovery is not fully resolved. Future rate cases at Georgia Power will need to incorporate the full Vogtle operating cost base, including depreciation, operations and maintenance, and financing costs for both new units, and the Georgia PSC's willingness to allow full recovery in future proceedings remains uncertain. The $1.2 billion in unrecoverable costs is an absorbed loss, but the ongoing regulatory relationship around Vogtle operations will shape Georgia Power's earnings for decades.
The $48 billion capital plan is only executable if Southern Company can continue accessing debt markets at manageable rates and maintain investment-grade credit ratings with $59.9 billion already on the balance sheet. Accelerated load growth in Georgia is a real tailwind that supports incremental capital recovery through rates, but execution risk on permitting, procurement, and construction for multiple large projects simultaneously is substantial. If data center and industrial load growth materializes at the projected pace, the investments will be well-supported in rates; if projects slow or cancel, the company will have invested ahead of demand with limited recourse.
This profile was compiled from publicly available information including:
Southern Company Investor Relations — Earnings releases, SEC filings (10-K, 10-Q), and investor presentations.
Southern Company corporate website — Business overview, subsidiary information, and sustainability reporting.
FY2024 Annual Report (Form 10-K), Q4 2024 earnings release, Georgia Power 2023 Integrated Resource Plan update.
This profile is for informational purposes only and does not constitute investment advice, a recommendation, or a solicitation to buy or sell any security.