Business Context and Reporting Period
This Form 8-K is a combined current report filed by The Southern Company and Georgia Power Company on July 1, 2025. The filing details a regulatory event involving the Georgia Public Service Commission (PSC) and Georgia Power Company regarding the extension of an alternate rate plan.
Key Financial Metrics and Regulatory Terms
The filing does not report specific revenue, profit, cash flow, or debt figures for the period. Instead, it establishes the following regulatory financial parameters for the extended rate plan:
- Return on Common Equity (ROE): The retail ROE set point remains at 10.50%.
- ROE Range: The approved range continues at 9.50% to 11.90%.
- Equity Ratio: Maintained at 56%.
- Rate Stability: Base rates will not be adjusted for the years 2026, 2027, and 2028, except for storm damage costs.
- Depreciation Period: Effective January 1, 2026, the period for depreciation and amortization for certain generating plants will be 13 years.
Material Changes Versus Prior Period
The primary material change is the approval of the "ARP Extension," which extends the 2022 Alternate Rate Plan (originally covering 2023–2025) through December 31, 2028. Key modifications include:
- Storm Damage Recovery: Costs incurred through December 31, 2025, will be recovered in a separate regulatory proceeding filed between February 1, 2026, and July 1, 2026.
- Tax Credit Amortization: Deferred Investment Tax Credits (ITCs) and Production Tax Credits (PTCs) will be amortized over the extension period. Specifically, 60% of PTC benefits (excluding §45J) will be credited to income tax expense as generated, while 40% will be deferred.
- Earnings Sharing: Earnings above 11.90% ROE will be shared: 40% to regulatory assets, 40% refunded to customers, and 20% retained by Georgia Power. No recovery is provided for earnings below 9.50% ROE unless an Interim Cost Recovery (ICR) tariff is implemented.
Guidance, Outlook, and Risks
Management commentary indicates that Georgia Power will not file for a base rate increase during the ARP Extension period, with a mandatory base rate case filing required by July 1, 2028. The filing outlines specific contingencies:
- Interim Cost Recovery (ICR): If projected retail earnings fall below the 9.50% ROE floor, Georgia Power may petition for an ICR tariff to adjust rates. This tariff would expire by January 1, 2029, or the end of the effective calendar year.
- Regulatory Timing: New rates for storm damage costs will be effective approximately 90 days after the filing of the separate proceeding, subject to PSC approval.
- Tax Guidance: The acceleration of amortization for tax credits is subject to Internal Revenue Code normalization rules and future IRS guidance.
Investor Verification Checklist
- Verify the specific filing date and content of the separate regulatory proceeding for storm damage costs (expected between Feb 1 and July 1, 2026).
- Monitor the implementation of the 13-year depreciation period for generating plants effective January 1, 2026.
- Track the actual amortization of ITCs and PTCs against the projected 60/40 split for PTCs and the five-year amortization for certain ITCs.
- Assess the likelihood of an Interim Cost Recovery (ICR) tariff filing if earnings projections approach the 9.50% ROE lower limit.
- Confirm the mandatory base rate case filing status as the July 1, 2028 deadline approaches.