8-K: Southern Co. Reports Mixed Q4, Full-Year 2025 Earnings

Southern Company reported a decline in Q4 and full-year 2025 GAAP earnings but showed growth in adjusted earnings and operating revenues.

Summary

• Reported GAAP earnings for the fourth quarter of 2025 were $416 million, or $0.38 per share, a decrease from $534 million, or $0.49 per share, in Q4 2024.
• Full-year 2025 reported GAAP earnings were $4.3 billion, or $3.94 per share, down from $4.4 billion, or $4.02 per share, in 2024.
• Adjusted earnings for Q4 2025 increased to $612 million, or $0.55 per share, compared to $544 million, or $0.50 per share, in Q4 2024.
• Full-year 2025 adjusted earnings rose to $4.7 billion, or $4.30 per share, from $4.4 billion, or $4.05 per share, in 2024.
• Operating revenues for Q4 2025 were $7.0 billion, a 10.1% increase from $6.3 billion in Q4 2024.
• Full-year 2025 operating revenues reached $29.6 billion, up 10.6% from $26.7 billion in 2024.
• Adjusted earnings growth for full-year 2025 was driven by higher utility revenues, partially offset by increased non-fuel operations and maintenance expenses, depreciation and amortization, and interest expense.
• Site demobilization efforts for Plant Vogtle Units 3 and 4 were completed in Q3 2025, with remaining contractor obligations finalized in Q4 2025.
• Dismantlement of abandoned gasifier-related assets at the Kemper County energy facility was completed by the end of 2025.
• Accelerated depreciation related to the repowering of certain wind facilities at Southern Power Company resulted in pre-tax charges of $116 million in Q4 2025 and $284 million for the full year 2025.
• A loss on extinguishment of debt totaling $123 million pre-tax in Q4 2025 and $252 million pre-tax for the full year 2025 was incurred from the repurchase of convertible senior notes.
• An estimated loss of $63 million pre-tax at Southern Company Gas was recorded due to Nicor Gas capital investment disallowances by the Illinois Commerce Commission.

Sentiment

Score: 6

Explanation: StockSavvy.ai views this as a mixed report. While adjusted earnings and revenues show positive operational momentum, significant one-time charges led to a decline in reported GAAP earnings, indicating underlying financial complexities.

Positives

• Operating revenues showed strong growth, increasing by 10.1% in Q4 2025 to $7.0 billion and by 10.6% for the full year 2025 to $29.6 billion.
• Adjusted earnings per share (excluding specific items) increased for both Q4 2025 ($0.55 vs. $0.50) and full-year 2025 ($4.30 vs. $4.05).
• Traditional Electric Operating Companies reported increased net income for both the fourth quarter and full year 2025.
• Completion of site demobilization efforts for Plant Vogtle Units 3 and 4 and finalization of remaining contractor obligations.
• Dismantlement of the abandoned gasifier-related assets at the Kemper County energy facility was completed.
• Total Regulated Utility Customers increased by 0.8% to 9,005 thousand as of December 2025.
• Weather-adjusted retail sales increased by 1.4% for Q4 and 1.7% for full-year 2025, indicating underlying demand growth.

Negatives

• Reported GAAP earnings per share decreased for both Q4 2025 ($0.38 vs. $0.49) and full-year 2025 ($3.94 vs. $4.02).
• Significant pre-tax charges of $116 million in Q4 2025 and $284 million for full-year 2025 were incurred due to accelerated depreciation from the repowering of certain wind facilities.
• A pre-tax loss on extinguishment of debt totaling $123 million in Q4 2025 and $252 million for full-year 2025 impacted reported earnings.
• An estimated pre-tax loss of $63 million at Southern Company Gas resulted from Nicor Gas capital investment disallowances.
• Higher non-fuel operations and maintenance expenses, depreciation and amortization, and interest expense partially offset the positive impact of increased utility revenues.
• Southern Power reported a net loss available to common for Q4 2025 and a significant decrease for the full year 2025.
• The Parent Company and Other segment experienced an increased net loss for both the fourth quarter and full year 2025.

Risks

• Impact of recent and future federal and state legal and regulatory changes, including tax, environmental, and other laws and regulations.
• The extent and timing of costs and legal requirements related to coal combustion residuals.
• Current and future litigation or regulatory investigations, proceedings, or inquiries, including litigation related to the Kemper County energy facility.
• The effects, extent, and timing of the entry of additional competition in the markets, including from alternative energy sources.
• Variations in demand for electricity and natural gas, including uncertainties related to projected significant growth in electricity demand driven primarily by data centers and other large load customers, and the related requirement for substantial new generation and transmission investments, creating capital access and revenue recovery risks.
• Customer affordability matters.
• Available sources and costs of natural gas and other fuels and commodities.
• The ability to complete necessary or desirable pipeline expansion or infrastructure projects, limits on pipeline capacity, public and policymaker support for such projects, and operational interruptions.
• Transmission constraints.
• The ability to control costs and avoid cost and schedule overruns during the development, construction, and operation of facilities or other projects due due to various challenges including labor, contractors, weather, shortages, inflation, trade policies, judicial/regulatory action, and operational readiness.
• Legal proceedings and regulatory approvals and actions related to past, ongoing, and proposed construction projects.
• The ability to construct facilities in accordance with permits and licenses, satisfy environmental performance standards, and integrate facilities into the Southern Company system.
• Investment performance of employee and retiree benefit plans and nuclear decommissioning trust funds, and changes in actuarial assumptions.
• Advances in technology, including lowto no-carbon energy and battery energy storage technologies, and their impact on customer demand.
• Performance of counterparties under ongoing renewable energy partnerships and development agreements.
• State and federal rate regulations and the impact of pending and future rate cases and negotiations.
• The ability to successfully operate electric utilities generation, transmission, distribution, and battery energy storage facilities, and natural gas distribution and storage facilities.
• Inherent risks involved in operating nuclear generating facilities.
• Inherent risks involved in generation, transmission, and distribution of electricity and transportation and storage of natural gas, including accidents, explosions, fires, and environmental risks.
• The performance of projects undertaken by non-utility businesses and the success of efforts to invest in and develop new opportunities.
• Internal restructuring or other restructuring options that may be pursued.
• Potential business strategies, including acquisitions or dispositions of assets or businesses, which cannot be assured to be completed or beneficial.
• The ability of counterparties to make payments as and when due and to perform as required.
• The ability to obtain new shortand long-term contracts with wholesale customers.
• The direct or indirect effect on the business resulting from cyber intrusion or physical attack.
• Global and U.S. economic conditions, including impacts from geopolitical conflicts, recession, inflation, trade policies, interest rate fluctuations, and financial market conditions.
• Prolonged or recurring U.S. federal government shutdowns.
• Access to capital markets and other financing sources.
• Changes in Southern Company's and any of its subsidiaries' credit ratings.
• The ability of Southern Company's electric utilities to obtain additional generating capacity (or sell excess) at competitive prices.
• Catastrophic events such as fires, earthquakes, floods, hurricanes, solar flares, droughts, health events, wars, or political unrest.
• The direct or indirect effects on the business resulting from incidents affecting the U.S. electric grid, natural gas pipeline infrastructure, or operation of generating or storage resources.
• Impairments of goodwill or long-lived assets.
• The effect of accounting pronouncements issued periodically by standard-setting bodies.

Future Outlook

Southern Company anticipates continued growth in electricity demand, primarily driven by data centers and other large load customers, which will necessitate substantial new generation and transmission investments. The company aims to meet this demand responsibly, support rate stability, and drive long-term savings for customers through a disciplined, 'all-of-the-above' approach. Accelerated depreciation for wind facility repowering projects is projected to continue until their commercial operation dates between Q3 2026 and Q3 2027.

Management Comments

• "2025 was another outstanding year for Southern Company, and it was also a transformative one." Chris Womack, chairman, president and CEO.
• "Southern Company is meeting the growing demand responsibly, while continuing to deliver value and benefits to all of our customers." Chris Womack.
• "Taking a disciplined, all-of-the-above approach is how we will continue to operate our company to serve this projected generational growth in a way that supports rate stability and helps drive long-term savings for our customers." Chris Womack.
• "Our nearly 30,000 employees remain committed to putting customers first, working every day to help keep costs down and provide reliable energy to the communities we are privileged to serve." Chris Womack.

Industry Context

StockSavvy.ai notes that Southern Company's focus on meeting growing electricity demand, particularly from data centers, aligns with a broader industry trend of increasing electrification and digital infrastructure expansion. The 'all-of-the-above' energy strategy reflects the complex balance utilities face between decarbonization goals and ensuring grid reliability amidst rising demand.

Comparison to Industry Standards

• The filing does not provide specific comparable companies, projects, or results to benchmark against global industry standards.

Legal Proceedings

• Current and future litigation or regulatory investigations, proceedings, or inquiries, including litigation related to the Kemper County energy facility.
• Legal proceedings and regulatory approvals and actions related to past, ongoing, and proposed construction projects.

Stakeholder Impact

• Shareholders: Experienced mixed results with declining GAAP EPS but growing adjusted EPS and revenues, alongside significant one-time charges and ongoing project risks.
• Customers: Management emphasizes delivering value, benefits, reliable energy, and working to keep costs down and support rate stability amidst projected generational growth.
• Employees: Nearly 30,000 employees are noted for their commitment to customer service and cost management.
• Creditors: The company incurred a loss on extinguishment of debt, and potential future similar transactions or changes in credit ratings could impact creditors.

Next Steps

• Southern Company's financial analyst call will be held at 1 p.m. Eastern Time on February 19, 2026, to discuss earnings and provide a general business update.
• Accelerated depreciation related to wind facility repowering will continue until commercial operation dates, projected between Q3 2026 and Q3 2027.
• Further charges related to the remeasuring of deferred tax assets may occur, though the amount and timing are uncertain.
• Similar transaction costs for extinguishment of debt may occur in the future at Southern Company or its unregulated subsidiaries.
• Further impacts may result from future disposition activities.
• Impairment charges may occur in the future.
• Further charges related to Nicor Gas capital investment disallowances may occur.

Key Dates

Recommendation

While Southern Company demonstrated strong revenue growth and an increase in adjusted earnings, the decline in reported GAAP earnings due to substantial one-time charges (accelerated depreciation, debt extinguishment, Nicor Gas disallowances) presents a mixed financial picture. The company is navigating significant capital projects and regulatory challenges. A 'hold' recommendation is appropriate as investors should monitor how these non-recurring items impact future reported earnings and the company's ability to manage its extensive risk factors, particularly regarding capital access and revenue recovery for new investments.

Keywords

Southern Company, SO, Earnings Report, Q4 2025, Full-Year 2025, Utility, Energy Provider, Financial Results, GAAP Earnings, Adjusted Earnings, Operating Revenue, EPS, Plant Vogtle, Wind Repowering, Debt Extinguishment, Nicor Gas, Capital Investments, SEC Filing, Electric Utility, Natural Gas Distribution, Renewable Energy