SOUTHERN CO

(K)ACQUISITIONS AND DISPOSITIONS

See Note 15 to the financial statements in Item 8 of the Form 10-K for additional information.

On April 21, 2025, the Florida PSC preliminarily approved Mississippi Power's acquisition of FP&L's 50% ownership interest in Plant Daniel Units 1 and 2. Interested parties may file an objection or protest by May 12, 2025. The ultimate outcome of this matter cannot be determined at this time. See Note (B) under "Mississippi Power – Plant Daniel" for additional information.

Construction Projects

During the three months ended March 31, 2025, Southern Power continued construction of the 200-MW first phase, the 180-MW second phase, and the 132-MW third phase of the Millers Branch solar facility. At March 31, 2025, the total cost of construction incurred for the Millers Branch project was $419 million, which is primarily included in CWIP. The ultimate outcome of these matters cannot be determined at this time.

Wind Repowering Projects

During the three months ended March 31, 2025, Southern Power continued the development project to repower 200 MWs of the 299-MW Kay Wind facility located in Kay County, Oklahoma. The output of the project is contracted under an amended 20-year PPA with commercial operation projected to occur in the third quarter 2026. At March 31, 2025, the total cost of construction incurred related to the project was $37 million and is included in CWIP. The ultimate outcome of this matter cannot be determined at this time.