Southern Company reported a 1.8% year-over-year increase in energy sales during 2025, driven by a 3.2% rise in residential consumption and a 2.1% uptick in commercial usage across its four primary operating states. The utility’s system peak demand reached 44,500 megawatts in December, up from 43,700 MW a year earlier, underpinning a 2.4% revenue gain in its Regulated Utilities segment. Management reiterated its expectation that underlying electricity demand will grow at an annualized rate of 1.5%–2.0% over the next five years, providing a stable base for future cash flows.

Southern Company’s 2026-2028 capital expenditure plan totals $23.4 billion, with $14.7 billion earmarked for grid modernization, $4.2 billion for generation capacity additions (including 1,200 MW of solar and battery storage), and $2.5 billion to upgrade transmission corridors. The plan represents a 12% increase over the prior three-year program and targets a 10% internal rate of return on new projects. The company secured $5.5 billion in long-term credit facilities at an average interest rate of 4.1%, locking in financing costs for critical infrastructure investments.

Despite the robust growth outlook, Southern Company’s total shareholder return of 3.2% over the past 12 months lags the 5.7% average among U.S. regulated utilities, reflecting project schedule delays at its Georgia Power nuclear expansion and permitting hurdles in its Gulf Coast transmission upgrades. Capital expenditures through Q3 2025 were 8% over budget, prompting management to reaffirm its cost control initiatives and implement a revised governance framework to improve project delivery timelines.

Interest expense climbed 15% to $1.18 billion in 2025, up from $1.03 billion the prior year, as the company drew on higher-cost debt to fund its accelerated capital plan. Southern Company’s debt-to-equity ratio stood at 1.15x at year-end, compared with 1.05x a year earlier, squeezing free cash flow to $1.3 billion versus $1.7 billion in 2024. Management projects interest costs will rise to approximately $1.3 billion in 2026, underscoring the importance of operational efficiencies and potential rate case approvals to offset financing headwinds.