ALABAMA POWER CO

For the period ended Sep 30, 2025. Filed Oct 30, 2025.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Oct 30, 2025

SO$93.57+1.3%Stored close · as of Nov 9, 2026

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Contents

Item 6. Exhibits

The exhibits below with an asterisk (*) preceding the exhibit number are filed herewith. The remaining exhibits have previously been filed with the SEC and are incorporated herein by reference. The exhibits marked with a pound sign (#) are management contracts or compensatory plans or arrangements.

(4) Instruments Describing Rights of Security Holders, Including Indentures
Alabama Power
(b)	-	Seventieth Supplemental Indenture to Senior Note Indenture dated as of September 5, 2025, providing for the issuance of the Series 2025C 4.30% Senior Notes due March 15, 2031. (Designated in Form 8-K dated September 2, 2025, File No. 1-3164 as Exhibit 4.6.)
Georgia Power
(c)1	-	Seventy-Sixth Supplemental Indenture to Senior Note Indenture dated as of September 29, 2025, providing for the issuance of the Series 2025D 4.00% Senior Notes due October 1, 2028. (Designated in Form 8-K dated September 24, 2025, File No. 1-6468, as Exhibit 4.3(b).)
(c)2	-	Seventy-Seventh Supplemental Indenture to Senior Note Indenture dated as of September 29, 2025, providing for the issuance of the Series 2025E 5.50% Senior Notes due October 1, 2055. (Designated in Form 8-K dated September 24, 2025, File No. 1-6468, as Exhibit 4.3(c).)
Southern Power
(e)1	-	Senior Note Indenture dated as of August 1, 2025 between Southern Power Company and U.S. Bank Trust Company, National Association, as Trustee. (Designated in Registration No. 333-289172 as Exhibit 4.5.)
(e)2	-	First Supplemental Indenture to Senior Note indenture dated as of September 19, 2025, providing for the issuance of the Series 2025A 4.25% Senior Notes due October 1, 2030. (Designated in Form 8-K dated September 16, 2025, File No. 001-37803 as Exhibit 4.6(a).)
(e)3	-	Second Supplemental Indenture to Senior Note indenture dated as of September 19, 2025, providing for the issuance of the Series 2025B 4.90% Senior Notes due October 1, 2035. (Designated in Form 8-K dated September 16, 2025, File No. 001-37803 as Exhibit 4.6(b).)

	Southern Company Gas
	(f)1	-	Indenture dated as of February 1, 2025 among Southern Company Gas Capital Corporation, Southern Company Gas, and U.S. Bank Trust Company, National Association, as Trustee. (Designated in Registration No. 333-285115, as Exhibit 4.2.)
	(f)2	-	Southern Company Gas Capital Corporation's Series 2025A 4.05% Senior Notes due September 15, 2028, Form of Note. (Designated in Form 8-K dated September 3, 2025, File No. 1-14174 as Exhibit 4.1(a).)
	(f)3	-	Southern Company Gas Capital Corporation's Series 2025B 5.10% Senior Notes due September 15, 2035, Form of Note. (Designated in Form 8-K dated September 3, 2025, File No. 1-14174 as Exhibit 4.1(b).)
	(f)4	-	Southern Company Gas' Guarantee related to the Series 2025A 4.05% Senior Notes due September 15, 2028, Form of Guarantee. (Designated in Form 8-K dated September 3, 2025, File No. 1-14174 as Exhibit 4.3(a).)
	(f)5	-	Southern Company Gas' Guarantee related to the Series 2025B 5.10% Senior Notes due September 15, 2035, Form of Guarantee. (Designated in Form 8-K dated September 3, 2025, File No. 1-14174 as Exhibit 4.3(b).)
*	(f)6	-	Supplemental Indenture dated as of September 16, 2025 of Northern Illinois Gas Company to U.S. Bank Trust Company, National Association, under the Indenture dated as of January 1, 1954.
	(24) Power of Attorney and Resolutions
	Southern Company
	(a)	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 1-3526 as Exhibit 24(a)1.)
	Alabama Power
	(b)	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 1-3164 as Exhibit 24(b)1.)
	Georgia Power
	(c)1	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 1-6468 as Exhibit 24(c)1.)
*	(c)2		Power of Attorney of Tyler M. Cook.
	Mississippi Power
	(d)1	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 001-11229 as Exhibit 24(d)1.)
*	(d)2		Power of Attorney of Pedro P. Cherry.
	Southern Power
	(e)	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 001-37803 as Exhibit 24(e)1.)
	Southern Company Gas
	(f)	-	Power of Attorney and resolution. (Designated in the Form 10-K for the year ended December 31, 2024, File No. 1-14174 as Exhibit 24(f)1.)
	(31) Section 302 Certifications
	Southern Company
*	(a)1	-	Certificate of Southern Company's Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(a)2	-	Certificate of Southern Company's Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.

	Alabama Power
*	(b)1	-	Certificate of Alabama Power's Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(b)2	-	Certificate of Alabama Power's Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
	Georgia Power
*	(c)1	-	Certificate of Georgia Power's Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(c)2	-	Certificate of Georgia Power's Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
	Mississippi Power
*	(d)1	-	Certificate of Mississippi Power's Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(d)2	-	Certificate of Mississippi Power's Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
	Southern Power
*	(e)1	-	Certificate of Southern Power Company's Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(e)2	-	Certificate of Southern Power Company's Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
	Southern Company Gas
*	(f)1	-	Certificate of Southern Company Gas' Chief Executive Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
*	(f)2	-	Certificate of Southern Company Gas' Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002.
	(32) Section 906 Certifications
	Southern Company
*	(a)	-	Certificate of Southern Company's Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.
	Alabama Power
*	(b)	-	Certificate of Alabama Power's Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.
	Georgia Power
*	(c)	-	Certificate of Georgia Power's Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.
	Mississippi Power
*	(d)	-	Certificate of Mississippi Power's Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.
	Southern Power
*	(e)	-	Certificate of Southern Power Company's Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.
	Southern Company Gas
*	(f)	-	Certificate of Southern Company Gas' Chief Executive Officer and Chief Financial Officer required by Section 906 of the Sarbanes-Oxley Act of 2002.

	(101) Interactive Data Files
*	INS	-	Inline XBRL Instance Document – The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
*	SCH	-	Inline XBRL Taxonomy Extension Schema Document
*	CAL	-	Inline XBRL Taxonomy Calculation Linkbase Document
*	DEF	-	Inline XBRL Definition Linkbase Document
*	LAB	-	Inline XBRL Taxonomy Label Linkbase Document
*	PRE	-	Inline XBRL Taxonomy Presentation Linkbase Document
	(104) Cover Page Interactive Data File
*			Formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101.

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