Table of Contents                                Index to Financial Statements

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2026

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from           to            

Commission
File Number Registrant,
State of Incorporation,
Address and Telephone Number I.R.S. Employer
Identification No.

1-3526 The Southern Company 58-0690070

(A Delaware Corporation)

30 Ivan Allen Jr. Boulevard, N.W.

Atlanta, Georgia 30308

(404) 506-5000

1-3164 Alabama Power Company 63-0004250

(An Alabama Corporation)

600 North 18th Street

Birmingham, Alabama 35203

(205) 257-1000

1-6468 Georgia Power Company 58-0257110

(A Georgia Corporation)

241 Ralph McGill Boulevard, N.E.

Atlanta, Georgia 30308

(404) 506-6526

001-11229 Mississippi Power Company 64-0205820

(A Mississippi Corporation)

2992 West Beach Boulevard

Gulfport, Mississippi 39501

(228) 864-1211

001-37803 Southern Power Company 58-2598670

(A Delaware Corporation)

30 Ivan Allen Jr. Boulevard, N.W.

Atlanta, Georgia 30308

(404) 506-5000

1-14174 Southern Company Gas 58-2210952

(A Georgia Corporation)

725 W. Peachtree Street, N.E.

Atlanta, Georgia 30308

(404) 584-4000

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Securities registered pursuant to Section 12(b) of the Act:

Registrant	Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
The Southern Company	Common Stock, par value $0.01 per share	SO	New York Stock Exchange
			(NYSE)
The Southern Company	Series 2017B 5.25% Junior Subordinated Notes due 2077	SOJC	NYSE
The Southern Company	Series 2020A 4.95% Junior Subordinated Notes due 2080	SOJD	NYSE
The Southern Company	Series 2020C 4.20% Junior Subordinated Notes due 2060	SOJE	NYSE
The Southern Company	Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081	SO 81	NYSE
The Southern Company	Series 2025A 6.50% Junior Subordinated Notes due 2085	SOJF	NYSE
The Southern Company	2025 Series A Corporate Units	SOMN	NYSE
Georgia Power Company	Series 2017A 5.00% Junior Subordinated Notes due 2077	GPJA	NYSE
Southern Power Company	Series 2016B 1.850% Senior Notes due 2026	SO/26A	NYSE

Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether the registrants have submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrants were required to submit such files). Yes þ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Registrant	Large Accelerated Filer	Accelerated Filer	Non-accelerated Filer	Smaller Reporting Company	Emerging Growth Company
The Southern Company	X
Alabama Power Company			X
Georgia Power Company			X
Mississippi Power Company			X
Southern Power Company			X
Southern Company Gas			X

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No þ (Response applicable to all registrants.)

Registrant	Description of Common Stock	Shares Outstanding at June 30, 2026
The Southern Company	Par Value $0.01 Per Share	1,150,362,966
Alabama Power Company	Par Value $40 Per Share	30,537,500
Georgia Power Company	Without Par Value	9,261,500
Mississippi Power Company	Without Par Value	1,121,000
Southern Power Company	Par Value $0.01 Per Share	1,000
Southern Company Gas	Par Value $0.01 Per Share	100

This combined Form 10-Q is separately filed by The Southern Company, Alabama Power Company, Georgia Power Company, Mississippi Power Company, Southern Power Company, and Southern Company Gas. Information contained herein relating to any individual registrant is filed by such registrant on its own behalf. Each registrant makes no representation as to information relating to the other registrants.

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TABLE OF CONTENTS

		Page
	Definitions	4
	Cautionary Statement Regarding Forward-Looking Information	7
	PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)	9
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	90
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	139
Item 4.	Controls and Procedures	139
	PART II—OTHER INFORMATION
Item 1.	Legal Proceedings	140
Item 1A.	Risk Factors	140
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	Inapplicable
Item 3.	Defaults Upon Senior Securities	Inapplicable
Item 4.	Mine Safety Disclosures	Inapplicable
Item 5.	Other Information	140
Item 6.	Exhibits	140
	Signatures	144

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DEFINITIONS

Term	Meaning
2022 ARP	Georgia Power's Alternate Rate Plan approved by the Georgia PSC in 2022 for the years 2023 through 2025
2023 IRP Update	Georgia Power's updated IRP filed in 2023 and approved by the Georgia PSC in 2024 as modified by a stipulation among Georgia Power, the staff of the Georgia PSC, and certain intervenors
2024 ELG Rule	Final rule published by the EPA in 2024 revising the steam effluent guidelines
AFUDC	Allowance for funds used during construction
AGL Services Company	AGL Services Company, Inc., the Southern Company Gas system service company and a wholly-owned subsidiary of Southern Company Gas
Alabama Power	Alabama Power Company
ARO	Asset retirement obligation
Atlanta Gas Light	Atlanta Gas Light Company, a wholly-owned subsidiary of Southern Company Gas
CAMT	Corporate alternative minimum tax
CCR	Coal combustion residuals
Chattanooga Gas	Chattanooga Gas Company, a wholly-owned subsidiary of Southern Company Gas
COD	Commercial operation date
CODM	Chief operating decision maker
CWIP	Construction work in progress
Dalton	City of Dalton, Georgia, an incorporated municipality in the state of Georgia, acting by and through its Board of Water, Light, and Sinking Fund Commissioners
Dalton Pipeline	A pipeline facility in Georgia in which Southern Company Gas has a 50% undivided ownership interest
DOE	U.S. Department of Energy
ECO Plan	Mississippi Power's environmental compliance overview plan
EPA	U.S. Environmental Protection Agency
EPS	Earnings per share
FCC	Federal Communications Commission
FERC	Federal Energy Regulatory Commission
FFB	Federal Financing Bank
Fitch	Fitch Ratings, Inc.
Form 10-K	Annual Report on Form 10-K of Southern Company, Alabama Power, Georgia Power, Mississippi Power, Southern Power, and Southern Company Gas for the year ended December 31, 2025, as applicable
GAAP	U.S. generally accepted accounting principles
Georgia Power	Georgia Power Company
Heating Degree Days	A measure of weather, calculated when the average daily temperatures are less than 65 degrees Fahrenheit
Heating Season	The period from November through March when Southern Company Gas' natural gas usage and operating revenues are generally higher
HLBV	Hypothetical liquidation at book value
IIC	Intercompany Interchange Contract
Illinois Commission	Illinois Commerce Commission
Internal Revenue Code	Internal Revenue Code of 1986, as amended
IRA	Inflation Reduction Act of 2022
IRP	Integrated resource plan
ITC	Investment tax credit
Jurisdictional Separation Study Order	Authorization from the Alabama PSC in June 2025 for Alabama Power to defer certain costs associated with capacity previously allocated to wholesale electric services that is now being used for retail electric service
KWH	Kilowatt-hour

4

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DEFINITIONS

(continued)

Term	Meaning
LIFO	Last-in, first-out
LTSA	Long-term service agreement
MEAG Power	Municipal Electric Authority of Georgia
Mississippi Power	Mississippi Power Company
mmBtu	Million British thermal units
Moody's	Moody's Investors Service, Inc.
MRA	Municipal and Rural Associations
MW	Megawatt
natural gas distribution utilities	Southern Company Gas' natural gas distribution utilities (Nicor Gas, Atlanta Gas Light, Virginia Natural Gas, and Chattanooga Gas)
NDR	Alabama Power's Natural Disaster Reserve
Nicor Gas	Northern Illinois Gas Company, a wholly-owned subsidiary of Southern Company Gas
N/M	Not meaningful
NRC	U.S. Nuclear Regulatory Commission
OBBB	One Big Beautiful Bill Act
OCI	Other comprehensive income
OPC	Oglethorpe Power Corporation (an electric membership corporation)
PEP	Mississippi Power's Performance Evaluation Plan
PowerSecure	PowerSecure, Inc., a wholly-owned subsidiary of Southern Company
PPA	Power purchase agreements, as well as, for Southern Power, contracts for differences that provide the owner of a renewable facility a certain fixed price for the electricity sold to the grid
PSC	Public Service Commission
PTC	Production tax credit
Rate CNP	Alabama Power's Rate Certificated New Plant, consisting of Rate CNP New Plant, Rate CNP Compliance, Rate CNP PPA, and Rate CNP Depreciation
Rate ECR	Alabama Power's Rate Energy Cost Recovery
Rate RSE	Alabama Power's Rate Stabilization and Equalization
Registrants	Southern Company, Alabama Power, Georgia Power, Mississippi Power, Southern Power Company, and Southern Company Gas
ROE	Return on equity
S&P	S&P Global Ratings, a division of S&P Global Inc.
SCS	Southern Company Services, Inc., the Southern Company system service company and a wholly-owned subsidiary of Southern Company
SEC	U.S. Securities and Exchange Commission
SEGCO	Southern Electric Generating Company, 50% owned by each of Alabama Power and Georgia Power
SNG	Southern Natural Gas Company, L.L.C., a pipeline system in which Southern Company Gas has a 50% ownership interest
SOFR	Secured Overnight Financing Rate
Southern Company	The Southern Company
Southern Company Gas	Southern Company Gas and its subsidiaries
Southern Company Gas Capital	Southern Company Gas Capital Corporation, a wholly-owned subsidiary of Southern Company Gas
Southern Company power pool	The operating arrangement whereby the integrated generating resources of the traditional electric operating companies and Southern Power (excluding subsidiaries) are subject to joint commitment and dispatch in order to serve their combined load obligations
Southern Company system	Southern Company, the traditional electric operating companies, Southern Power, Southern Company Gas, SEGCO, Southern Nuclear, SCS, Southern Linc, PowerSecure, and other subsidiaries
Southern Holdings	Southern Company Holdings, Inc., a wholly-owned subsidiary of Southern Company

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DEFINITIONS

(continued)

Term	Meaning
Southern Linc	Southern Communications Services, Inc., a wholly-owned subsidiary of Southern Company, doing business as Southern Linc
Southern Nuclear	Southern Nuclear Operating Company, Inc., a wholly-owned subsidiary of Southern Company
Southern Power	Southern Power Company and its subsidiaries
SouthStar	SouthStar Energy Services, LLC (a Marketer), a wholly-owned subsidiary of Southern Company Gas
SP Solar	SP Solar Holdings I, LP, a limited partnership indirectly owning substantially all of Southern Power's solar and battery energy storage facilities, in which Southern Power has a 67% ownership interest
SP Wind	SP Wind Holdings II, LLC, a holding company owning a portfolio of eight operating wind facilities and wholly owned by Southern Power as of December 31, 2025, was previously in a tax equity arrangement where Southern Power was the controlling partner through December 31, 2025
SRR	Mississippi Power's System Restoration Rider, a tariff for retail property damage cost recovery and reserve
Subsidiary Registrants	Alabama Power, Georgia Power, Mississippi Power, Southern Power, and Southern Company Gas
Tax Reform Legislation	The Tax Cuts and Jobs Act, which became effective on January 1, 2018
traditional electric operating companies	Alabama Power, Georgia Power, and Mississippi Power
U.S. Treasury	U.S. Department of the Treasury
VIE	Variable interest entity
Virginia Natural Gas	Virginia Natural Gas, Inc., a wholly-owned subsidiary of Southern Company Gas
Vogtle Owners	Georgia Power, OPC, MEAG Power, and Dalton

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This Quarterly Report on Form 10-Q contains forward-looking statements. Forward-looking statements include, among other things, statements concerning regulated rates, the strategic goals for the business, customer and sales growth, economic conditions, including interest rates, tariffs, and inflation, cost recovery and other rate actions, current and proposed environmental regulations and related compliance plans and estimated expenditures, pending or potential litigation matters, access to sources of capital, financing activities, completion dates and costs of construction projects, filings with state and federal regulatory authorities, and estimated construction plans and expenditures. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "could," "would," "should," "expects," "plans," "anticipates," "believes," "estimates," "projects," "predicts," "potential," or "continue" or the negative of these terms or other similar terminology. There are various factors that could cause actual results to differ materially from those suggested by the forward-looking statements; accordingly, there can be no assurance that such indicated results will be realized. These factors include:

•the impact of recent and future federal and state legal and regulatory changes, including tax, environmental, and other laws and regulations to which Southern Company and its subsidiaries are subject, as well as changes in application of existing laws, regulations, and guidance;

•the extent and timing of costs and legal requirements related to CCR;

•current and future litigation or regulatory investigations, proceedings, or inquiries;

•the effects, extent, and timing of the entry of additional competition in the markets in which Southern Company's subsidiaries operate, including from the development and deployment of 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 for the traditional electric operating companies;

•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 to natural gas distribution and transmission activities;

•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 to challenges which include, but are not limited to, changes in labor costs, availability, and productivity; challenges with the management of contractors or vendors; subcontractor performance; adverse weather conditions; shortages, delays, increased costs, or inconsistent quality of equipment, materials, and labor; contractor or supplier delay; the impacts of inflation and trade policies (including tariffs and other trade measures) of the United States and other countries; delays due to judicial or regulatory action; nonperformance under construction, operating, or other agreements; operational readiness, including specialized operator training and required site safety programs; engineering or design problems or any remediation related thereto; design and other licensing-based compliance matters; challenges with start-up activities, including major equipment failure, or system integration, and/or operational performance; challenges related to future epidemic or pandemic health events; continued public and policymaker support for projects; environmental and geological conditions; delays or increased costs to interconnect facilities to transmission grids; and increased financing costs as a result of changes in interest rates or as a result of project delays;

•legal proceedings and regulatory approvals and actions related to past, ongoing, and proposed construction projects, including state PSC or other applicable state regulatory agency approvals and FERC and NRC actions;

•the ability to construct facilities in accordance with the requirements of permits and licenses, to satisfy any environmental performance standards and the requirements of tax credits and other incentives, and to integrate facilities into the Southern Company system upon completion of construction;

•investment performance of the employee and retiree benefit plans and nuclear decommissioning trust funds and, with respect to retiree benefit plans, changes in actuarial assumptions and differences between the assumptions and actual values, any of the foregoing of which could cause additional funding requirements;

•advances in technology, including the pace and extent of development of low- to no-carbon energy and battery energy storage technologies and the impact of advancing technology on data center and other large load customer demand;

•performance of counterparties under ongoing renewable energy partnerships and development agreements;

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

(continued)

•state and federal rate regulations and the impact of pending and future rate cases and negotiations, including rate actions relating to ROE, equity ratios, additional generating capacity and transmission facilities, extension of retirement dates for fossil fuel plants, and fuel and other cost recovery mechanisms;

•the ability to successfully operate the traditional electric operating companies', SEGCO's, and Southern Power's generation, transmission, distribution, and battery energy storage facilities, as applicable, and Southern Company Gas' natural gas distribution and storage facilities and the successful performance of necessary corporate functions;

•the inherent risks involved in operating nuclear generating facilities;

•the inherent risks involved in generation, transmission, and distribution of electricity and transportation and storage of natural gas, including accidents, explosions, fires, mechanical problems, discharges or releases of toxic or hazardous substances or gases, and other environmental risks;

•the performance of projects undertaken by the 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, or interests therein, which cannot be assured to be completed or beneficial to Southern Company or its subsidiaries;

•the ability of counterparties of Southern Company and its subsidiaries to make payments as and when due and to perform as required;

•the ability to obtain new short- and long-term contracts with wholesale customers;

•the direct or indirect effect on the Southern Company system's business resulting from cyber intrusion or physical attack and the threat of cyber and physical attacks;

•global and U.S. economic conditions, including impacts from geopolitical conflicts, recession, inflation, changes in trade policies (including tariffs and other trade measures) of the United States and other countries, interest rate fluctuations, and financial market conditions, and the results of financing efforts;

•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 the traditional electric operating companies to obtain additional generating capacity (or sell excess generating capacity) at competitive prices;

•catastrophic events such as fires, including wildfires, land movement, earthquakes, explosions, floods, high winds, tornadoes, hurricanes and other storms, solar flares, droughts, future epidemic or pandemic health events, wars, political unrest, or other similar occurrences;

•the direct or indirect effects on the Southern Company system's 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; and

•other factors discussed elsewhere herein and in other reports (including the Form 10-K) filed by the Registrants from time to time with the SEC.

The Registrants expressly disclaim any obligation to update any forward-looking statements.

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PART I

Item 1. Financial Statements (Unaudited).

	Page
The Southern Company and Subsidiary Companies:
Condensed Consolidated Statements of Income	10
Condensed Consolidated Statements of Comprehensive Income	11
Condensed Consolidated Statements of Cash Flows	12
Condensed Consolidated Balance Sheets	13
Condensed Consolidated Statements of Stockholders' Equity	15
Alabama Power Company:
Condensed Statements of Income	16
Condensed Statements of Comprehensive Income	16
Condensed Statements of Cash Flows	17
Condensed Balance Sheets	18
Condensed Statements of Common Stockholder's Equity	20
Georgia Power Company:
Condensed Statements of Income	21
Condensed Statements of Comprehensive Income	21
Condensed Statements of Cash Flows	22
Condensed Balance Sheets	23
Condensed Statements of Common Stockholder's Equity	25
Mississippi Power Company:
Condensed Statements of Income and Comprehensive Income	26
Condensed Statements of Cash Flows	27
Condensed Balance Sheets	28
Condensed Statements of Common Stockholder's Equity	30
Southern Power Company and Subsidiary Companies:
Condensed Consolidated Statements of Income (Loss)	31
Condensed Consolidated Statements of Comprehensive Income (Loss)	31
Condensed Consolidated Statements of Cash Flows	32
Condensed Consolidated Balance Sheets	33
Condensed Consolidated Statements of Stockholders' Equity	35
Southern Company Gas and Subsidiary Companies:
Condensed Consolidated Statements of Income	36
Condensed Consolidated Statements of Comprehensive Income	36
Condensed Consolidated Statements of Cash Flows	37
Condensed Consolidated Balance Sheets	38
Condensed Consolidated Statements of Stockholder's Equity	40
Combined Notes to the Condensed Financial Statements	41

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THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Retail electric revenues	$	4,745	$	4,758	$	9,385	$	9,358
Wholesale electric revenues	699		681		1,664		1,425
Other electric revenues	242		220		507		463
Natural gas revenues (includes alternative revenue programs of     $4, $(9), $2, and $(28), respectively)	966		979		3,157		2,818
Other revenues	325		335		661		684
Total operating revenues	6,977		6,973		15,374		14,748
Operating Expenses:
Fuel	1,054		1,116		2,544		2,408
Purchased power	288		260		532		510
Cost of natural gas	177		255		1,103		929
Cost of other sales	176		167		357		366
Other operations and maintenance	1,705		1,685		3,359		3,305
Depreciation and amortization	1,434		1,323		2,854		2,608
Taxes other than income taxes	367		403		831		848
Total operating expenses	5,201		5,209		11,580		10,974
Operating Income	1,776		1,764		3,794		3,774
Other Income and (Expense):
Allowance for equity funds used during construction	128		80		248		153
Earnings from equity method investments	86		10		136		43
Interest expense, net of amounts capitalized	(796)		(874)		(1,573)		(1,588)
Other income (expense), net	181		162		336		310
Total other income and (expense)	(401)		(622)		(853)		(1,082)
Earnings Before Income Taxes	1,375		1,142		2,941		2,692
Income taxes	187		289		414		569
Consolidated Net Income	1,188		853		2,527		2,123
Net income (loss) attributable to noncontrolling interests	14		(27)		(4)		(91)
Consolidated Net Income Attributable to    Southern Company	$	1,174	$	880	$	2,531	$	2,214
Common Stock Data:
Earnings per share -
Basic	$	1.03	$	0.80	$	2.24	$	2.01
Diluted	$	1.03	$	0.79	$	2.23	$	2.00
Average number of shares of common stock outstanding (in millions)
Basic	1,137		1,101		1,130		1,100
Diluted	1,141		1,108		1,134		1,107

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Consolidated Net Income	$	1,188	$	853	$	2,527	$	2,123
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of    $(4), $11, $(4), and $16, respectively	(13)		35		(16)		49
Reclassification adjustment for amounts included in net income,    net of tax of $3, $(10), $4, and $(14), respectively	7		(31)		11		(43)
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax of    $—, $—, $—, and $—, respectively	—		—		1		1
Reclassification adjustment for amounts included in net income,    net of tax of $—, $—, $—, and $—, respectively	1		—		1		—
Total other comprehensive income (loss)	(5)		4		(3)		7
Comprehensive Income	1,183		857		2,524		2,130
Comprehensive income (loss) attributable to noncontrolling interests	14		(27)		(4)		(91)
Consolidated Comprehensive Income Attributable to    Southern Company	$	1,169	$	884	$	2,528	$	2,221

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Consolidated net income	$	2,527	$	2,123
Adjustments to reconcile consolidated net income to net cash provided from operating activities —
Depreciation and amortization, total	3,176		2,860
Deferred income taxes	310		453
Allowance for equity funds used during construction	(248)		(153)
Pension, postretirement, and other employee benefits	(277)		(253)
Settlement of asset retirement obligations	(283)		(285)
Stock based compensation expense	112		102
Storm damage cost recovery – long-term	(139)		(238)
Other, net	(87)		76
Changes in certain current assets and liabilities —
-Receivables	116		(130)
-Retail fuel cost under recovery	188		158
-Prepayments	(96)		(109)
-Materials and supplies	(178)		35
-Natural gas for sale, net of temporary LIFO liquidation	197		233
-Other current assets	(60)		61
-Accounts payable	(403)		(695)
-Accrued taxes	(221)		(245)
-Accrued compensation	(459)		(421)
-Other current liabilities	105		(141)
Net cash provided from operating activities	4,280		3,431
Investing Activities:
Property additions	(6,639)		(5,456)
Contributions in aid of construction	313		219
Nuclear decommissioning trust fund purchases	(994)		(777)
Nuclear decommissioning trust fund sales	994		777
Cost of removal, net of salvage	(349)		(304)
Other investing activities	(83)		(193)
Net cash used for investing activities	(6,758)		(5,734)
Financing Activities:
Increase (decrease) in notes payable, net	1,415		(150)
Proceeds —
Long-term debt	4,790		6,319
Short-term borrowings	350		200
Common stock	2,596		62
Redemptions and repurchases —
Long-term debt	(3,085)		(2,254)
Short-term borrowings	(350)		—
Distributions to noncontrolling interests	(76)		(66)
Payment of common stock dividends	(1,579)		(1,494)
Other financing activities	(233)		(150)
Net cash provided from financing activities	3,828		2,467
Net Change in Cash, Cash Equivalents, and Restricted Cash	1,350		164
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,640		1,101
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	2,990	$	1,265
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $100 and $61 capitalized for 2026 and 2025, respectively)	$	1,472	$	1,287
Income taxes, net (excludes credit transfers)	146		199
Noncash transactions —
Accrued property additions at end of period	1,409		1,091
Right-of-use assets obtained under operating leases	107		114
Right-of-use assets obtained under finance leases	5		14
Issuance of common stock under dividend reinvestment plan	109		112

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	2,984	$	1,639
Receivables —
Customer accounts	2,301		2,251
Unbilled revenues	938		931
Under recovered fuel clause revenues	227		316
Other accounts and notes	580		655
Accumulated provision for uncollectible accounts	(98)		(84)
Materials and supplies	2,380		2,202
Fossil fuel for generation	728		735
Natural gas for sale	198		396
Prepaid expenses	370		327
Regulatory assets – asset retirement obligations	353		353
Other regulatory assets	916		709
Other current assets	501		487
Total current assets	12,378		10,917
Property, Plant, and Equipment:
In service	151,437		146,114
Less: Accumulated depreciation	45,868		43,483
Plant in service, net of depreciation	105,569		102,631
Other utility plant, net	—		307
Nuclear fuel, at amortized cost	902		897
Construction work in progress	11,874		10,534
Total property, plant, and equipment	118,345		114,369
Other Property and Investments:
Goodwill	5,161		5,161
Nuclear decommissioning trusts, at fair value	3,110		2,947
Equity investments in unconsolidated subsidiaries	1,428		1,318
Other intangible assets, net of amortization of $457 and $444, respectively	287		300
Miscellaneous property and investments	701		714
Total other property and investments	10,687		10,440
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,369		1,358
Deferred charges related to income taxes	1,094		948
Prepaid pension costs	3,544		3,257
Unamortized loss on reacquired debt	179		187
Deferred under recovered fuel clause revenues	151		252
Regulatory assets – asset retirement obligations, deferred	5,042		5,129
Other regulatory assets, deferred	7,577		7,427
Other deferred charges and assets	1,661		1,436
Total deferred charges and other assets	20,617		19,994
Total Assets	$	162,027	$	155,720

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholders' Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	4,694	$	6,220
Notes payable	2,132		722
Accounts payable	3,374		3,710
Customer deposits	487		475
Accrued taxes —
Accrued income taxes	70		22
Other accrued taxes	695		982
Accrued interest	812		807
Accrued compensation	927		1,418
Asset retirement obligations	658		662
Liabilities from risk management activities, net of collateral	151		118
Operating lease obligations	207		197
Natural gas cost over recovery	191		158
Other regulatory liabilities	190		240
Other current liabilities	1,146		1,157
Total current liabilities	15,734		16,888
Long-term Debt	68,756		65,649
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	12,628		12,133
Deferred credits related to income taxes	4,611		4,712
Accumulated deferred ITCs	2,066		2,002
Employee benefit obligations	1,029		980
Operating lease obligations, deferred	1,298		1,287
Asset retirement obligations, deferred	8,917		8,939
Other cost of removal obligations	2,084		2,036
Other regulatory liabilities, deferred	712		722
Other deferred credits and liabilities	1,850		1,505
Total deferred credits and other liabilities	35,195		34,316
Total Liabilities	119,685		116,853
Total Stockholders' Equity (See accompanying statements)	42,342		38,867
Total Liabilities and Stockholders' Equity	$	162,027	$	155,720

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED)

	Southern Company Common Stockholders' Equity
	Number of Common Shares		Common Stock								Accumulated Other Comprehensive Income (Loss)
	Issued	Treasury	Par Value		Paid-In Capital		Treasury		Retained Earnings				Noncontrolling Interests		Total
	(in millions)
Balance at December 31, 2024	1,098	(1)	$	5,446	$	14,149	$	(59)	$	13,750	$	(78)	$	3,466	$	36,674
Consolidated net income (loss)	—	—	—		—		—		1,334		—		(64)		1,270
Other comprehensive income	—	—	—		—		—		—		3		—		3
Stock issued	2	—	7		78		—		—		—		—		85
Stock-based compensation	—	—	—		5		—		—		—		—		5
Dividends of $0.72 per share	—	—	—		—		—		(791)		—		—		(791)
Capital contributions from    noncontrolling interests	—	—	—		—		—		—		—		19		19
Distributions to noncontrolling interests	—	—	—		—		—		—		—		(37)		(37)
Other	—	—	—		(1)		(2)		(2)		—		—		(5)
Balance at March 31, 2025	1,100	(1)	$	5,453	$	14,231	$	(61)	$	14,291	$	(75)	$	3,384	$	37,223
Consolidated net income (loss)	—	—	—		—		—		880		—		(27)		853
Other comprehensive income	—	—	—		—		—		—		4		—		4
Stock issued	1	—	5		84		—		—		—		—		89
Stock-based compensation	—	—	—		11		—		—		—		—		11
Dividends of $0.74 per share	—	—	—		—		—		(815)		—		—		(815)
Capital contributions from    noncontrolling interests	—	—	—		—		—		—		—		4		4
Distributions to noncontrolling interests	—	—	—		—		—		—		—		(33)		(33)
Other	—	—	—		6		(1)		1		—		—		6
Balance at June 30, 2025	1,101	(1)	$	5,458	$	14,332	$	(62)	$	14,357	$	(71)	$	3,328	$	37,342

Balance at December 31, 2025	1,120	(1)	$	5,554	$	15,740	$	(59)	$	14,856	$	(75)	$	2,851	$	38,867
Consolidated net income (loss)	—	—	—		—		—		1,356		—		(18)		1,338
Other comprehensive income	—	—	—		—		—		—		2		—		2
Stock issued	8	—	34		555		—		—		—		—		589
Stock-based compensation	—	—	—		(9)		—		—		—		—		(9)
Dividends of $0.74 per share	—	—	—		—		—		(830)		—		—		(830)
Capital contributions from    noncontrolling interests	—	—	—		—		—		—		—		4		4
Distributions to noncontrolling interests	—	—	—		—		—		—		—		(46)		(46)
Other	—	—	—		(1)		(1)		—		—		(1)		(3)
Balance at March 31, 2026	1,128	(1)	$	5,588	$	16,285	$	(60)	$	15,382	$	(73)	$	2,790	$	39,912
Consolidated net income	—	—	—		—		—		1,174		—		14		1,188
Other comprehensive income (loss)	—	—	—		—		—		—		(5)		—		(5)
Change in par value from $5.00 to $0.01	—	—	(5,577)		5,577		—		—		—		—		—
Stock issued	23	—	—		2,116		—		—		—		—		2,116
Stock-based compensation	—	—	—		15		—		—		—		—		15
Dividends of $0.76 per share	—	—	—		—		—		(858)		—		—		(858)
Distributions to noncontrolling interests	—	—	—		—		—		—		—		(32)		(32)
Other	—	—	—		5		(1)		2		—		—		6
Balance at June 30, 2026	1,151	(1)	$	11	$	23,998	$	(61)	$	15,700	$	(78)	$	2,772	$	42,342

The accompanying notes as they relate to Southern Company are an integral part of these condensed consolidated financial statements.

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ALABAMA POWER COMPANY

CONDENSED STATEMENTS OF INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Retail revenues	$	1,710	$	1,718	$	3,438	$	3,441
Wholesale revenues, non-affiliates	85		98		202		189
Wholesale revenues, affiliates	55		36		174		105
Other revenues	113		116		241		245
Total operating revenues	1,963		1,968		4,055		3,980
Operating Expenses:
Fuel	336		337		764		723
Purchased power, non-affiliates	63		54		136		124
Purchased power, affiliates	53		67		126		121
Other operations and maintenance	415		472		808		935
Depreciation and amortization	385		371		766		741
Taxes other than income taxes	118		120		251		250
Total operating expenses	1,370		1,421		2,851		2,894
Operating Income	593		547		1,204		1,086
Other Income and (Expense):
Allowance for equity funds used during construction	18		18		37		36
Interest expense, net of amounts capitalized	(117)		(116)		(232)		(225)
Other income (expense), net	78		47		116		84
Total other income and (expense)	(21)		(51)		(79)		(105)
Earnings Before Income Taxes	572		496		1,125		981
Income taxes	135		115		263		226
Net Income	$	437	$	381	$	862	$	755

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Net Income	$	437	$	381	$	862	$	755
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of    $—, $—, $—, and $—, respectively	(2)		—		(2)		—
Reclassification adjustment for amounts included in net income,    net of tax of $—, $—, $—, and $—, respectively	—		—		—		1
Total other comprehensive income (loss)	(2)		—		(2)		1
Comprehensive Income	$	435	$	381	$	860	$	756

The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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ALABAMA POWER COMPANY

CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Net income	$	862	$	755
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	867		803
Deferred income taxes	88		116
Pension, postretirement, and other employee benefits	(115)		(89)
Settlement of asset retirement obligations	(114)		(120)
Retail fuel cost under recovery – long-term	(66)		(62)
Other, net	(57)		(44)
Changes in certain current assets and liabilities —
-Receivables	(6)		(94)
-Prepayments	(66)		(89)
-Other current assets	(21)		(8)
-Accounts payable	(277)		(251)
-Accrued taxes	72		25
-Accrued compensation	(111)		(93)
-Customer refunds	2		(110)
-Other current liabilities	20		(61)
Net cash provided from operating activities	1,078		678
Investing Activities:
Property additions	(958)		(1,065)
Contributions in aid of construction	157		31
Nuclear decommissioning trust fund purchases	(307)		(270)
Nuclear decommissioning trust fund sales	307		270
Cost of removal, net of salvage	(95)		(92)
Other investing activities	18		(43)
Net cash used for investing activities	(878)		(1,169)
Financing Activities:
Proceeds —
Senior notes	—		600
Other long-term debt	—		4
Redemptions —
Senior notes	—		(250)
Other long-term debt	(45)		—
Capital contributions from parent company	276		562
Payment of common stock dividends	(601)		(609)
Other financing activities	6		(7)
Net cash provided from (used for) financing activities	(364)		300
Net Change in Cash, Cash Equivalents, and Restricted Cash	(164)		(191)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	566		585
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	402	$	394
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $11 and $10 capitalized for 2026 and 2025, respectively)	$	229	$	205
Income taxes, net	217		217
Noncash transactions —
Accrued property additions at end of period	131		116
Right-of-use assets obtained under operating leases	11		7
Right-of-use assets obtained under finance leases	3		1

The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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ALABAMA POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	402	$	566
Receivables —
Customer accounts	587		470
Unbilled revenues	216		189
Affiliated	120		126
Other accounts and notes	84		113
Accumulated provision for uncollectible accounts	(23)		(23)
Fossil fuel stock	294		303
Materials and supplies	746		732
Prepaid expenses	152		86
Other regulatory assets	372		344
Other current assets	84		80
Total current assets	3,034		2,986
Property, Plant, and Equipment:
In service	40,731		38,915
Less: Accumulated provision for depreciation	14,001		12,816
Plant in service, net of depreciation	26,730		26,099
Other utility plant, net	—		307
Nuclear fuel, at amortized cost	276		290
Construction work in progress	1,386		1,441
Total property, plant, and equipment	28,392		28,137
Other Property and Investments:
Nuclear decommissioning trusts, at fair value	1,653		1,542
Equity investments in unconsolidated subsidiaries	53		48
Miscellaneous property and investments	123		123
Total other property and investments	1,829		1,713
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	89		86
Deferred charges related to income taxes	263		261
Prepaid pension and other postretirement benefit costs	1,061		1,016
Regulatory assets – asset retirement obligations	1,454		1,518
Other regulatory assets, deferred	2,146		1,982
Other deferred charges and assets	411		425
Total deferred charges and other assets	5,424		5,288
Total Assets	$	38,679	$	38,124

The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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ALABAMA POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	303	$	625
Accounts payable —
Affiliated	263		294
Other	422		576
Customer deposits	115		113
Accrued taxes	187		105
Accrued interest	137		134
Accrued compensation	185		275
Asset retirement obligations	261		256
Other regulatory liabilities	58		89
Other current liabilities	148		135
Total current liabilities	2,079		2,602
Long-term Debt	11,670		11,388
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	4,351		4,209
Deferred credits related to income taxes	1,535		1,585
Accumulated deferred ITCs	105		115
Employee benefit obligations	138		152
Operating lease obligations	80		78
Asset retirement obligations, deferred	3,387		3,423
Other regulatory liabilities, deferred	216		252
Other deferred credits and liabilities	587		326
Total deferred credits and other liabilities	10,399		10,140
Total Liabilities	24,148		24,130
Common Stockholder's Equity (See accompanying statements)	14,531		13,994
Total Liabilities and Stockholder's Equity	$	38,679	$	38,124

The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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ALABAMA POWER COMPANY

CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)

	Number of Common Shares Issued	Common Stock		Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total
	(in millions)
Balance at December 31, 2024	31	$	1,222	$	7,657	$	4,214	$	(5)	$	13,088
Net income	—	—		—		375		—		375
Capital contributions from parent company	—	—		527		—		—		527
Other comprehensive income	—	—		—		—		1		1
Cash dividends on common stock	—	—		—		(305)		—		(305)
Other	—	—		—		—		(1)		(1)
Balance at March 31, 2025	31	$	1,222	$	8,184	$	4,284	$	(5)	$	13,685
Net income	—	—		—		381		—		381
Capital contributions from parent company	—	—		38		—		—		38
Cash dividends on common stock	—	—		—		(304)		—		(304)
Other	—	—		—		(1)		1		—
Balance at June 30, 2025	31	$	1,222	$	8,222	$	4,360	$	(4)	$	13,800
Balance at December 31, 2025	31	$	1,222	$	8,263	$	4,512	$	(3)	$	13,994
Net income	—	—		—		425		—		425
Capital contributions from parent company	—	—		226		—		—		226
Cash dividends on common stock	—	—		—		(301)		—		(301)
Balance at March 31, 2026	31	$	1,222	$	8,489	$	4,636	$	(3)	$	14,344
Net income	—	—		—		437		—		437
Capital contributions from parent company	—	—		53		—		—		53
Other comprehensive income (loss)	—	—		—		—		(2)		(2)
Cash dividends on common stock	—	—		—		(300)		—		(300)
Other	—	—		—		(1)		—		(1)
Balance at June 30, 2026	31	$	1,222	$	8,542	$	4,772	$	(5)	$	14,531

The accompanying notes as they relate to Alabama Power are an integral part of these condensed financial statements.

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GEORGIA POWER COMPANY

CONDENSED STATEMENTS OF INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Retail revenues	$	2,753	$	2,765	$	5,391	$	5,395
Wholesale revenues	120		107		347		250
Other revenues	260		238		538		503
Total operating revenues	3,133		3,110		6,276		6,148
Operating Expenses:
Fuel	466		476		1,067		1,000
Purchased power, non-affiliates	171		180		329		340
Purchased power, affiliates	184		197		473		461
Other operations and maintenance	667		645		1,341		1,283
Depreciation and amortization	503		512		987		1,015
Taxes other than income taxes	138		173		313		342
Total operating expenses	2,129		2,183		4,510		4,441
Operating Income	1,004		927		1,766		1,707
Other Income and (Expense):
Allowance for equity funds used during construction	104		56		201		104
Interest expense, net of amounts capitalized	(228)		(198)		(431)		(385)
Other income (expense), net	50		58		108		112
Total other income and (expense)	(74)		(84)		(122)		(169)
Earnings Before Income Taxes	930		843		1,644		1,538
Income taxes	151		236		236		334
Net Income	$	779	$	607	$	1,408	$	1,204

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Net Income	$	779	$	607	$	1,408	$	1,204
Other comprehensive income:
Qualifying hedges:
Changes in fair value, net of tax of    $—, $1, $—, and $1, respectively	—		4		—		2
Reclassification adjustment for amounts included in net income,    net of tax of $—, $—, $—, and $—, respectively	—		—		—		1
Total other comprehensive income	—		4		—		3
Comprehensive Income	$	779	$	611	$	1,408	$	1,207

The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

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    Table of Contents                                Index to Financial Statements

GEORGIA POWER COMPANY

CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Net income	$	1,408	$	1,204
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,128		1,167
Deferred income taxes	25		238
Allowance for equity funds used during construction	(201)		(104)
Pension, postretirement, and other employee benefits	(127)		(128)
Settlement of asset retirement obligations	(147)		(149)
Storm damage cost recovery – long-term	(139)		(238)
Other, net	(23)		(39)
Changes in certain current assets and liabilities —
-Receivables	(210)		(270)
-Retail fuel cost under recovery	210		186
-Materials and supplies	(132)		16
-Other current assets	(36)		(11)
-Accounts payable	48		(396)
-Accrued taxes	(207)		(196)
-Other current liabilities	(20)		55
Net cash provided from operating activities	1,577		1,335
Investing Activities:
Property additions	(4,233)		(3,090)
Contributions in aid of construction	141		99
Nuclear decommissioning trust fund purchases	(687)		(507)
Nuclear decommissioning trust fund sales	687		507
Cost of removal, net of salvage	(194)		(152)
Other investing activities	(26)		(75)
Net cash used for investing activities	(4,312)		(3,218)
Financing Activities:
Increase in notes payable, net	70		285
Proceeds —
Senior notes	1,300		1,600
Short-term borrowings	250		200
FFB loan	1,016		—
Redemptions and repurchases —
Senior notes	(325)		(700)
Short-term borrowings	(250)		—
FFB loan	(43)		(43)
Other long-term debt	(400)		—
Capital contributions from parent company	2,463		1,671
Payment of common stock dividends	(1,287)		(1,105)
Other financing activities	(46)		(49)
Net cash provided from financing activities	2,748		1,859
Net Change in Cash, Cash Equivalents, and Restricted Cash	13		(24)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	59		118
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	72	$	94
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $61 and $33 capitalized for 2026 and 2025, respectively)	$	392	$	341
Income taxes, net (excludes credit transfers)	118		25
Noncash transactions —
Accrued property additions at end of period	1,050		699
Right-of-use assets obtained under operating leases	23		28
Right-of-use assets obtained under finance leases	1,400		13

The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

22

    Table of Contents                                Index to Financial Statements

GEORGIA POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	72	$	59
Receivables —
Customer accounts, net	1,014		993
Unbilled revenues	577		346
Under recovered retail fuel clause revenues	161		310
Joint owner accounts	76		195
Affiliated	95		96
Other accounts and notes	127		61
Fossil fuel stock	364		362
Materials and supplies	1,130		994
Regulatory assets – asset retirement obligations	222		222
Other regulatory assets	500		335
Other current assets	288		285
Total current assets	4,626		4,258
Property, Plant, and Equipment:
In service	63,226		59,458
Less: Accumulated provision for depreciation	16,442		15,957
Plant in service, net of depreciation	46,784		43,501
Nuclear fuel, at amortized cost	626		606
Construction work in progress	8,215		6,764
Total property, plant, and equipment	55,625		50,871
Other Property and Investments:
Nuclear decommissioning trusts, at fair value	1,457		1,405
Equity investments in unconsolidated subsidiaries	39		40
Miscellaneous property and investments	229		231
Total other property and investments	1,725		1,676
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	881		1,120
Deferred charges related to income taxes	805		660
Prepaid pension costs	1,180		1,099
Deferred under recovered retail fuel clause revenues	151		212
Regulatory assets – asset retirement obligations, deferred	3,360		3,382
Other regulatory assets, deferred	4,034		4,032
Other deferred charges and assets	984		767
Total deferred charges and other assets	11,395		11,272
Total Assets	$	73,371	$	68,077

The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

23

    Table of Contents                                Index to Financial Statements

GEORGIA POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	1,548	$	1,370
Notes payable	230		160
Accounts payable —
Affiliated	904		992
Other	1,756		1,728
Customer deposits	277		267
Accrued taxes	471		678
Accrued interest	236		234
Accrued compensation	217		327
Operating lease obligations	132		170
Asset retirement obligations	350		360
Other regulatory liabilities	29		52
Other current liabilities	346		332
Total current liabilities	6,496		6,670
Long-term Debt	22,857		20,122
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	4,902		4,811
Deferred credits related to income taxes	2,207		2,225
Accumulated deferred ITCs	461		354
Employee benefit obligations	192		189
Operating lease obligations, deferred	761		960
Asset retirement obligations, deferred	5,193		5,167
Other deferred credits and liabilities	682		545
Total deferred credits and other liabilities	14,398		14,251
Total Liabilities	43,751		41,043
Common Stockholder's Equity (See accompanying statements)	29,620		27,034
Total Liabilities and Stockholder's Equity	$	73,371	$	68,077

The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

24

    Table of Contents                                Index to Financial Statements

GEORGIA POWER COMPANY

CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)

	Number of Common Shares Issued	Common Stock		Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total
	(in millions)
Balance at December 31, 2024	9	$	398	$	19,708	$	3,562	$	13	$	23,681
Net income	—	—		—		596		—		596
Capital contributions from parent company	—	—		702		—		—		702
Other comprehensive income (loss)	—	—		—		—		(1)		(1)
Cash dividends on common stock	—	—		—		(552)		—		(552)
Balance at March 31, 2025	9	$	398	$	20,410	$	3,606	$	12	$	24,426
Net income	—	—		—		607		—		607
Capital contributions from parent company	—	—		972		—		—		972
Other comprehensive income	—	—		—		—		4		4
Cash dividends on common stock	—	—		—		(553)		—		(553)
Other	—	—		—		1		—		1
Balance at June 30, 2025	9	$	398	$	21,382	$	3,661	$	16	$	25,457
Balance at December 31, 2025	9	$	398	$	22,416	$	4,204	$	16	$	27,034
Net income	—	—		—		628		—		628
Capital contributions from parent company	—	—		1,500		—		—		1,500
Cash dividends on common stock	—	—		—		(644)		—		(644)
Other	—	—		—		1		—		1
Balance at March 31, 2026	9	$	398	$	23,916	$	4,189	$	16	$	28,519
Net income	—	—		—		779		—		779
Capital contributions from parent company	—	—		965		—		—		965
Cash dividends on common stock	—	—		—		(643)		—		(643)
Balance at June 30, 2026	9	$	398	$	24,881	$	4,325	$	16	$	29,620

The accompanying notes as they relate to Georgia Power are an integral part of these condensed financial statements.

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    Table of Contents                                Index to Financial Statements

MISSISSIPPI POWER COMPANY

CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Retail revenues	$	283	$	274	$	556	$	522
Wholesale revenues, non-affiliates	74		62		162		133
Wholesale revenues, affiliates	35		55		131		136
Other revenues	11		9		26		30
Total operating revenues	403		400		875		821
Operating Expenses:
Fuel and purchased power	122		143		328		309
Other operations and maintenance	107		82		194		166
Depreciation and amortization	58		52		113		105
Taxes other than income taxes	36		36		72		69
Total operating expenses	323		313		707		649
Operating Income	80		87		168		172
Other Income and (Expense):
Interest expense, net of amounts capitalized	(21)		(20)		(41)		(40)
Other income (expense), net	9		9		19		16
Total other income and (expense)	(12)		(11)		(22)		(24)
Earnings Before Income Taxes	68		76		146		148
Income taxes	16		17		34		34
Net Income and Comprehensive Income	$	52	$	59	$	112	$	114

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

26

    Table of Contents                                Index to Financial Statements

MISSISSIPPI POWER COMPANY

CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Net income	$	112	$	114
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	125		115
Deferred income taxes	14		4
Pension, postretirement, and other employee benefits	(9)		(8)
Settlement of asset retirement obligations	(12)		(7)
Other, net	(3)		(7)
Changes in certain current assets and liabilities —
-Receivables	(11)		(26)
-Retail fuel cost under recovery	(14)		(28)
-Fossil fuel stock	—		20
-Other current assets	(8)		8
-Accounts payable	(23)		(22)
-Accrued taxes	(57)		(49)
-Accrued compensation	(21)		(22)
-Wholesale fuel cost over recovery	—		(15)
-Other current liabilities	—		1
Net cash provided from operating activities	93		78
Investing Activities:
Property additions	(185)		(166)
Contributions in aid of construction	4		57
Cost of removal, net of salvage	(18)		(17)
Payments pursuant to LTSAs	(11)		(11)
Other investing activities	1		(8)
Net cash used for investing activities	(209)		(145)
Financing Activities:
Increase in notes payable, net	38		18
Proceeds — Senior notes	75		100
Capital contributions from parent company	97		57
Payment of common stock dividends	(96)		(97)
Other financing activities	(2)		(2)
Net cash provided from financing activities	112		76
Net Change in Cash, Cash Equivalents, and Restricted Cash	(4)		9
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	26		13
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	22	$	22
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest	$	40	$	37
Income taxes, net	23		21
Noncash transactions —
Accrued property additions at end of period	42		30
Right-of-use assets obtained under operating leases	3		—

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

27

    Table of Contents                                Index to Financial Statements

MISSISSIPPI POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	22	$	26
Receivables —
Customer accounts, net	60		50
Unbilled revenues	48		44
Under recovered retail fuel clause revenues	55		—
Affiliated	27		26
Other accounts and notes	18		22
Fossil fuel stock	46		46
Materials and supplies	102		101
Other regulatory assets	58		49
Other current assets	14		10
Total current assets	450		374
Property, Plant, and Equipment:
In service	6,111		5,972
Less: Accumulated provision for depreciation	2,020		1,922
Plant in service, net of depreciation	4,091		4,050
Construction work in progress	223		238
Total property, plant, and equipment	4,314		4,288
Other Property and Investments	140		143
Deferred Charges and Other Assets:
Deferred charges related to income taxes	24		25
Prepaid pension costs	162		151
Deferred under recovered retail fuel clause revenues	—		40
Regulatory assets – asset retirement obligations	228		229
Other regulatory assets, deferred	259		255
Accumulated deferred income taxes	59		66
Other deferred charges and assets	81		66
Total deferred charges and other assets	813		832
Total Assets	$	5,717	$	5,637

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

28

    Table of Contents                                Index to Financial Statements

MISSISSIPPI POWER COMPANY

CONDENSED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	141	$	66
Notes payable	38		—
Accounts payable —
Affiliated	72		70
Other	69		77
Accrued taxes	70		125
Accrued compensation	30		49
Asset retirement obligations	18		21
Other regulatory liabilities	24		20
Other current liabilities	97		92
Total current liabilities	559		520
Long-term Debt	1,720		1,720
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	501		491
Deferred credits related to income taxes	192		211
Employee benefit obligations	66		67
Asset retirement obligations, deferred	97		103
Other cost of removal obligations	103		115
Other regulatory liabilities, deferred	137		141
Other deferred credits and liabilities	40		80
Total deferred credits and other liabilities	1,136		1,208
Total Liabilities	3,415		3,448
Common Stockholder's Equity (See accompanying statements)	2,302		2,189
Total Liabilities and Stockholder's Equity	$	5,717	$	5,637

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

29

    Table of Contents                                Index to Financial Statements

MISSISSIPPI POWER COMPANY

CONDENSED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)

	Number of Common Shares Issued	Common Stock		Paid-In Capital		Retained Earnings (Accumulated Deficit)		Accumulated Other Comprehensive Income (Loss)		Total
	(in millions)
Balance at December 31, 2024	1	$	38	$	4,791	$	(2,745)	$	5	$	2,089
Net income	—	—		—		55		—		55
Capital contributions from parent company	—	—		51		—		—		51
Cash dividends on common stock	—	—		—		(48)		—		(48)
Other	—	—		—		—		(1)		(1)
Balance at March 31, 2025	1	$	38	$	4,842	$	(2,738)	$	4	$	2,146
Net income	—	—		—		59		—		59
Capital contributions from parent company	—	—		7		—		—		7
Cash dividends on common stock	—	—		—		(49)		—		(49)
Other	—	—		—		1		—		1
Balance at June 30, 2025	1	$	38	$	4,849	$	(2,727)	$	4	$	2,164
Balance at December 31, 2025	1	$	38	$	4,871	$	(2,724)	$	4	$	2,189
Net income	—	—		—		60		—		60
Capital contributions from parent company	—	—		90		—		—		90
Cash dividends on common stock	—	—		—		(48)		—		(48)
Balance at March 31, 2026	1	$	38	$	4,961	$	(2,712)	$	4	$	2,291
Net income	—	—		—		52		—		52
Capital contributions from parent company	—	—		7		—		—		7
Cash dividends on common stock	—	—		—		(48)		—		(48)
Balance at June 30, 2026	1	$	38	$	4,968	$	(2,708)	$	4	$	2,302

The accompanying notes as they relate to Mississippi Power are an integral part of these condensed financial statements.

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    Table of Contents                                Index to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Wholesale revenues, non-affiliates	$	439	$	424	$	1,016	$	870
Wholesale revenues, affiliates	92		114		192		229
Other revenues	4		8		8		14
Total operating revenues	535		546		1,216		1,113
Operating Expenses:
Fuel	129		147		383		355
Purchased power	36		31		94		59
Other operations and maintenance	139		135		278		257
Depreciation and amortization	280		177		558		329
Taxes other than income taxes	13		13		25		25
Total operating expenses	597		503		1,338		1,025
Operating Income (Loss)	(62)		43		(122)		88
Other Income and (Expense):
Interest expense, net of amounts capitalized	(28)		(24)		(55)		(50)
Other income (expense), net	2		3		4		6
Total other income and (expense)	(26)		(21)		(51)		(44)
Earnings (Loss) Before Income Taxes	(88)		22		(173)		44
Income taxes (benefit)	(77)		(2)		(147)		(3)
Net Income (Loss)	(11)		24		(26)		47
Net income (loss) attributable to noncontrolling interests	14		(27)		(4)		(91)
Net Income (Loss) Attributable to Southern Power	$	(25)	$	51	$	(22)	$	138

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Net Income (Loss)	$	(11)	$	24	$	(26)	$	47
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of    $(2), $11, $(5), and $17, respectively	(7)		35		(14)		52
Reclassification adjustment for amounts included in net income,    net of tax of $1, $(10), $4. and $(15), respectively	4		(33)		13		(48)
Total other comprehensive income (loss)	(3)		2		(1)		4
Comprehensive Income (Loss)	(14)		26		(27)		51
Comprehensive income (loss) attributable to noncontrolling interests	14		(27)		(4)		(91)
Comprehensive Income (Loss) Attributable to Southern Power	$	(28)	$	53	$	(23)	$	142

The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

31

    Table of Contents                                Index to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Net income (loss)	$	(26)	$	47
Adjustments to reconcile net income (loss) to net cash provided from operating activities —
Depreciation and amortization, total	568		340
Deferred income taxes	(75)		(2)
Utilization of federal tax credit carryforward	130		—
Amortization of ITCs	(29)		(29)
Loss on damaged equipment	22		—
Other, net	(9)		(18)
Changes in certain current assets and liabilities —
-Receivables	(47)		(69)
-Income taxes receivable	(39)		(2)
-Other current assets	(24)		2
-Accounts payable	(19)		(20)
-Accrued compensation	(11)		(11)
-Other current liabilities	8		(6)
Net cash provided from operating activities	449		232
Investing Activities:
Property additions	(399)		(392)
Payments pursuant to LTSAs	(28)		(26)
Other investing activities	10		—
Net cash used for investing activities	(417)		(418)
Financing Activities:
Increase (decrease) in notes payable, net	(135)		201
Proceeds — Senior notes	600		—
Redemptions — Senior notes	(564)		—
Capital contributions from parent company	465		146
Capital contributions from noncontrolling interests	4		23
Distributions to noncontrolling interests	(76)		(66)
Payment of common stock dividends	(143)		(139)
Other financing activities	(10)		(4)
Net cash provided from financing activities	141		161
Net Change in Cash, Cash Equivalents, and Restricted Cash	173		(25)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	105		168
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	278	$	143
Supplemental Cash Flow Information:
Cash paid (received) during the period for —
Interest (net of $21 and $8 capitalized for 2026 and 2025, respectively)	$	61	$	59
Income taxes, net (excludes credit transfers)	(61)		52
Noncash transactions —
Accrued property additions at end of period	66		60
Right-of-use assets obtained under operating leases	—		2

The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

32

    Table of Contents                                Index to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	278	$	105
Receivables —
Customer accounts, net	193		151
Affiliated	42		35
Other	52		16
Materials and supplies	136		132
Prepaid income taxes	52		8
Other current assets	61		81
Total current assets	814		528
Property, Plant, and Equipment:
In service	15,339		15,034
Less: Accumulated provision for depreciation	5,564		5,214
Plant in service, net of depreciation	9,775		9,820
Construction work in progress	944		1,080
Total property, plant, and equipment	10,719		10,900
Other Property and Investments:
Intangible assets, net of amortization of $198 and $188, respectively	194		203
Net investment in sales-type leases	133		137
Total other property and investments	327		340
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	474		479
Prepaid LTSAs	198		170
Other deferred charges and assets	248		240
Total deferred charges and other assets	920		889
Total Assets	$	12,780	$	12,657

The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

33

    Table of Contents                                Index to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholders' Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	—	$	587
Notes payable	—		138
Accounts payable —
Affiliated	76		88
Other	101		93
Accrued taxes	21		9
Accrued interest	32		38
Operating lease obligations	31		31
Other current liabilities	75		92
Total current liabilities	336		1,076
Long-term Debt	2,950		2,353
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	655		579
Accumulated deferred ITCs	1,354		1,383
Operating lease obligations, deferred	505		510
Other deferred credits and liabilities	238		235
Total deferred credits and other liabilities	2,752		2,707
Total Liabilities	6,038		6,136
Total Stockholders' Equity (See accompanying statements)	6,742		6,521
Total Liabilities and Stockholders' Equity	$	12,780	$	12,657

The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

34

    Table of Contents                                Index to Financial Statements

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED)

	Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total Common Stockholder's Equity		Noncontrolling Interests		Total
	(in millions)
Balance at December 31, 2024	$	1,306	$	1,912	$	(2)	$	3,216	$	3,466	$	6,682
Net income (loss)	—		87		—		87		(64)		23
Capital contributions from parent company	130		—		—		130		—		130
Other comprehensive income	—		—		2		2		—		2
Cash dividends on common stock	—		(70)		—		(70)		—		(70)
Capital contributions from    noncontrolling interests	—		—		—		—		19		19
Distributions to noncontrolling interests	—		—		—		—		(37)		(37)
Balance at March 31, 2025	$	1,436	$	1,929	$	—	$	3,365	$	3,384	$	6,749
Net income (loss)	—		51		—		51		(27)		24
Capital contributions from parent company	16		—		—		16		—		16
Other comprehensive income	—		—		2		2		—		2
Cash dividends on common stock	—		(69)		—		(69)		—		(69)
Capital contributions from    noncontrolling interests	—		—		—		—		4		4
Distributions to noncontrolling interests	—		—		—		—		(33)		(33)
Other	—		(1)		—		(1)		—		(1)
Balance at June 30, 2025	$	1,452	$	1,910	$	2	$	3,364	$	3,328	$	6,692

Balance at December 31, 2025	$	1,912	$	1,758	$	—	$	3,670	$	2,851	$	6,521
Net income (loss)	—		4		—		4		(18)		(14)
Other comprehensive income	—		—		2		2		—		2
Cash dividends on common stock	—		(72)		—		(72)		—		(72)
Capital contributions from    noncontrolling interests	—		—		—		—		4		4
Distributions to noncontrolling interests	—		—		—		—		(46)		(46)
Other	(1)		1		—		—		(1)		(1)
Balance at March 31, 2026	$	1,911	$	1,691	$	2	$	3,604	$	2,790	$	6,394
Net income (loss)	—		(25)		—		(25)		14		(11)
Capital contributions from parent company	465		—		—		465		—		465
Other comprehensive income (loss)	—		—		(3)		(3)		—		(3)
Cash dividends on common stock	—		(71)		—		(71)		—		(71)
Distributions to noncontrolling interests	—		—		—		—		(32)		(32)
Other	1		(1)		—		—		—		—
Balance at June 30, 2026	$	2,377	$	1,594	$	(1)	$	3,970	$	2,772	$	6,742

The accompanying notes as they relate to Southern Power are an integral part of these condensed consolidated financial statements.

35

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Operating Revenues:
Natural gas revenues (includes revenue taxes of     $25, $27, $95, and $90, respectively)	$	966	$	979	$	3,157	$	2,818
Total operating revenues	966		979		3,157		2,818
Operating Expenses:
Cost of natural gas	177		255		1,103		929
Other operations and maintenance	341		301		683		617
Depreciation and amortization	185		172		369		341
Taxes other than income taxes	61		61		166		158
Total operating expenses	764		789		2,321		2,045
Operating Income	202		190		836		773
Other Income and (Expense):
Earnings from equity method investments	32		23		78		62
Interest expense, net of amounts capitalized	(101)		(92)		(206)		(183)
Other income (expense), net	25		18		41		34
Total other income and (expense)	(44)		(51)		(87)		(87)
Earnings Before Income Taxes	158		139		749		686
Income taxes	32		33		176		162
Net Income	$	126	$	106	$	573	$	524

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)				(in millions)
Net Income	$	126	$	106	$	573	$	524
Other comprehensive income (loss):
Qualifying hedges:
Changes in fair value, net of tax of    $(1), $(2), $1, and $2, respectively	(3)		(6)		2		6
Reclassification adjustment for amounts included in net income,    net of tax of $1, $—, $(2), and $—, respectively	2		(1)		(4)		—
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income,    net of tax of $—, $—, $—, and $—, respectively	—		—		(1)		(1)
Total other comprehensive income (loss)	(1)		(7)		(3)		5
Comprehensive Income	$	125	$	99	$	570	$	529

The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

	For the Six Months Ended June 30,
	2026		2025
	(in millions)
Operating Activities:
Net income	$	573	$	524
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	366		338
Deferred income taxes	89		67
Other, net	40		26
Changes in certain current assets and liabilities —
-Receivables	427		209
-Natural gas for sale, net of temporary LIFO liquidation	197		233
-Other current assets	(12)		37
-Accounts payable	(152)		(105)
-Accrued compensation	(39)		(44)
-Natural gas cost over recovery	34		(87)
-Other current liabilities	(15)		12
Net cash provided from operating activities	1,508		1,210
Investing Activities:
Property additions	(799)		(704)
Contributions in aid of construction	11		27
Cost of removal, net of salvage	(39)		(42)
Change in construction payables, net	26		15
Capital contributions to unconsolidated subsidiaries	(93)		(31)
Other investing activities	5		—
Net cash used for investing activities	(889)		(735)
Financing Activities:
Increase (decrease) in notes payable, net	(190)		16
Proceeds — Other long-term debt	500		—
Redemptions —
Senior notes	(350)		—
First mortgage bonds	(100)		—
Return of capital to parent company	—		(23)
Capital contributions from parent company	22		22
Payment of common stock dividends	(281)		(297)
Other financing activities	(17)		(12)
Net cash used for financing activities	(416)		(294)
Net Change in Cash, Cash Equivalents, and Restricted Cash	203		181
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	15		44
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	218	$	225
Supplemental Cash Flow Information:
Cash paid during the period for —
Interest (net of $7 and $9 capitalized for 2026 and 2025, respectively)	$	201	$	185
Income taxes, net	55		66
Noncash transactions —
Accrued property additions at end of period	138		101
Right-of-use assets obtained under operating leases	1		60
Return of capital to parent company	—		33

The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Assets	At June 30, 2026		At December 31, 2025
	(in millions)
Current Assets:
Cash and cash equivalents	$	214	$	15
Receivables —
Customer accounts	326		490
Unbilled revenues	85		341
Other accounts and notes	61		57
Accumulated provision for uncollectible accounts	(65)		(50)
Materials and supplies	61		62
Natural gas for sale	198		396
Prepaid expenses	35		26
Other regulatory assets	117		114
Other current assets	49		66
Total current assets	1,081		1,517
Property, Plant, and Equipment:
In service	24,726		24,098
Less: Accumulated depreciation	6,489		6,273
Plant in service, net of depreciation	18,237		17,825
Construction work in progress	969		863
Total property, plant, and equipment	19,206		18,688
Other Property and Investments:
Goodwill	5,015		5,015
Equity investments in unconsolidated subsidiaries	1,254		1,182
Other intangible assets, net of amortization of $181 and $179, respectively	1		3
Miscellaneous property and investments	25		24
Total other property and investments	6,295		6,224
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	80		85
Prepaid pension and other postretirement benefit costs	301		229
Other regulatory assets, deferred	508		517
Other deferred charges and assets	133		127
Total deferred charges and other assets	1,022		958
Total Assets	$	27,604	$	27,387

The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

Liabilities and Stockholder's Equity	At June 30, 2026		At December 31, 2025
	(in millions)
Current Liabilities:
Securities due within one year	$	80	$	531
Notes payable	235		425
Accounts payable —
Affiliated	75		70
Other	439		553
Customer deposits	75		75
Accrued taxes	111		107
Accrued interest	102		100
Accrued compensation	98		137
Natural gas cost over recovery	191		158
Other regulatory liabilities	36		36
Other current liabilities	96		110
Total current liabilities	1,538		2,302
Long-term Debt	9,224		8,743
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	2,059		1,971
Deferred credits related to income taxes	667		681
Employee benefit obligations	135		78
Operating lease obligations	120		123
Other cost of removal obligations	1,981		1,921
Accrued environmental remediation	201		207
Other deferred credits and liabilities	238		234
Total deferred credits and other liabilities	5,401		5,215
Total Liabilities	16,163		16,260
Common Stockholder's Equity (See accompanying statements)	11,441		11,127
Total Liabilities and Stockholder's Equity	$	27,604	$	27,387

The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

39

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SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY (UNAUDITED)

	Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total
	(in millions)
Balance at December 31, 2024	$	10,863	$	85	$	48	$	10,996
Net income	—		418		—		418
Return of capital to parent company	(56)		—		—		(56)
Capital contributions from parent company	3		—		—		3
Other comprehensive income	—		—		12		12
Cash dividends on common stock	—		(149)		—		(149)
Other	—		1		—		1
Balance at March 31, 2025	$	10,810	$	355	$	60	$	11,225
Net income	—		106		—		106
Capital contributions from parent company	23		—		—		23
Other comprehensive income (loss)	—		—		(7)		(7)
Cash dividends on common stock	—		(148)		—		(148)
Other	—		(1)		—		(1)
Balance at June 30, 2025	$	10,833	$	312	$	53	$	11,198
Balance at December 31, 2025	$	10,854	$	222	$	51	$	11,127
Net income	—		447		—		447
Capital contributions from parent company	1		—		—		1
Other comprehensive income (loss)	—		—		(2)		(2)
Cash dividends on common stock	—		(141)		—		(141)
Other	—		1		—		1
Balance at March 31, 2026	$	10,855	$	529	$	49	$	11,433
Net income	—		126		—		126
Capital contributions from parent company	24		—		—		24
Other comprehensive income (loss)	—		—		(1)		(1)
Cash dividends on common stock	—		(140)		—		(140)
Other	—		(1)		—		(1)
Balance at June 30, 2026	$	10,879	$	514	$	48	$	11,441

The accompanying notes as they relate to Southern Company Gas are an integral part of these condensed consolidated financial statements.

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS

FOR

THE SOUTHERN COMPANY AND SUBSIDIARY COMPANIES

ALABAMA POWER COMPANY

GEORGIA POWER COMPANY

MISSISSIPPI POWER COMPANY

SOUTHERN POWER COMPANY AND SUBSIDIARY COMPANIES

SOUTHERN COMPANY GAS AND SUBSIDIARY COMPANIES

(UNAUDITED)

INDEX TO THE NOTES TO THE CONDENSED FINANCIAL STATEMENTS

Note		Page
A	Introduction	42
B	Regulatory Matters	45
C	Contingencies	49
D	Revenue from Contracts with Customers and Lease Income	51
E	Consolidated Entities and Equity Method Investments	58
F	Financing and Leases	59
G	Income Taxes	64
H	Retirement Benefits	65
I	Fair Value Measurements	68
J	Derivatives	72
K	Acquisitions and Dispositions	81
L	Segment and Related Information	83

INDEX TO APPLICABLE NOTES TO FINANCIAL STATEMENTS BY REGISTRANT

The following unaudited notes to the condensed financial statements are a combined presentation; however, information contained herein relating to any individual Registrant is filed by such Registrant on its own behalf and each Registrant makes no representation as to information related to the other Registrants. The table below indicates the Registrants to which each note applies.

Applicable Notes

Registrant

A

B

C

D

E

F

G

H

I

J

K

L

Southern Company

l

l

l

l

l

l

l

l

l

l

l

l

Alabama Power

l

l

l

l

l

l

l

l

l

l

Georgia Power

l

l

l

l

l

l

l

l

l

l

Mississippi Power

l

l

l

l

l

l

l

l

l

l

Southern Power

l

l

l

l

l

l

l

l

l

l

l

Southern Company Gas

l

l

l

l

l

l

l

l

l

l

l

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS

(UNAUDITED)

(A) INTRODUCTION

The condensed quarterly financial statements of each Registrant included herein have been prepared by such Registrant, without audit, pursuant to the rules and regulations of the SEC. The Condensed Balance Sheets at December 31, 2025 have been derived from the audited financial statements of each Registrant. In the opinion of each Registrant's management, the information regarding such Registrant furnished herein reflects all adjustments, which, except as otherwise disclosed, are of a normal recurring nature, necessary to present fairly the results of operations for the periods ended June 30, 2026 and 2025. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations, although each Registrant believes that the disclosures regarding such Registrant are adequate to make the information presented not misleading. Disclosures which would substantially duplicate the disclosures in the Form 10-K and details which have not changed significantly in amount or composition since the filing of the Form 10-K are generally omitted from this Quarterly Report on Form 10-Q unless specifically required by GAAP. Therefore, these Condensed Financial Statements should be read in conjunction with the financial statements and the notes thereto included in the Form 10-K. Due to the seasonal variations in the demand for energy and other factors, operating results for the periods presented are not necessarily indicative of the operating results to be expected for the full year.

The preparation of financial statements in conformity with GAAP requires the use of estimates, and the actual results may differ from those estimates. Certain prior year data presented in the financial statements have been reclassified to conform to the current year presentation. These reclassifications had no impact on the overall results of operations, financial position, or cash flows of any Registrant.

Goodwill and Other Intangible Assets

Goodwill at both June 30, 2026 and December 31, 2025 was as follows:

	Goodwill
	(in millions)
Southern Company	$	5,161
Southern Company Gas:
Gas distribution operations	$	4,034
Gas marketing services	981
Southern Company Gas total	$	5,015

Goodwill is not amortized but is subject to an annual impairment test during the fourth quarter of each year, or more frequently if goodwill impairment indicators exist.

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Other intangible assets were as follows:

	At June 30, 2026						At December 31, 2025
	Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net
	(in millions)						(in millions)
Southern Company
Subject to amortization:
Customer relationships	$	212	$	(192)	$	20	$	212	$	(189)	$	23
Trade names	64		(64)		—		64		(64)		—
PPA fair value adjustments	390		(198)		192		390		(188)		202
Other	3		(3)		—		3		(3)		—
Total subject to amortization	$	669	$	(457)	$	212	$	669	$	(444)	$	225
Not subject to amortization:
FCC licenses	75		—		75		75		—		75
Total other intangible assets	$	744	$	(457)	$	287	$	744	$	(444)	$	300
Southern Power(*)
PPA fair value adjustments	$	390	$	(198)	$	192	$	390	$	(188)	$	202
Southern Company Gas(*)
Gas marketing services
Customer relationships	$	156	$	(155)	$	1	$	156	$	(153)	$	3
Trade names	26		(26)		—		26		(26)		—
Total other intangible assets	$	182	$	(181)	$	1	$	182	$	(179)	$	3

(*)All subject to amortization.

Amortization associated with other intangible assets was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
	(in millions)
Southern Company(a)	$	7	$	8	$	13	$	16
Southern Power(b)	5		5		10		10
Southern Company Gas
Gas marketing services	1		1		2		3

(a)Includes $5 million for the three months ended June 30, 2026 and 2025 and $10 million for the six months ended June 30, 2026 and 2025 recorded as a reduction to operating revenues.

(b)Recorded as a reduction to operating revenues.

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed balance sheets that total to the amount shown in the condensed statements of cash flows for the applicable Registrants:

	Southern Company		Southern Company Gas
	(in millions)
At June 30, 2026
Cash and cash equivalents	$	2,984	$	214
Restricted cash(a):
Other current assets	5		4
Total cash, cash equivalents, and restricted cash(b)	$	2,990	$	218
At December 31, 2025
Cash and cash equivalents	$	1,639	$	15
Restricted cash(a):
Other current assets	1		—
Total cash, cash equivalents, and restricted cash(b)	$	1,640	$	15

(a)For Southern Company Gas, reflects funds held to support letters of credit. For Southern Company, also reflects collateral of $1 million for life insurance and long-term disability insurance, which was included at Southern Holdings.

(b)Total may not add due to rounding.

Natural Gas for Sale

With the exception of Nicor Gas, Southern Company Gas records natural gas inventories on a weighted average cost basis. For any declines in market prices below the weighted average cost considered to be non-temporary, an adjustment is recorded to reduce the value of natural gas inventories to market value. Nicor Gas' natural gas inventory is carried at cost on a LIFO basis. Inventory decrements occurring during the year that are restored prior to year-end are charged to cost of natural gas at the estimated annual replacement cost. Inventory decrements that are not restored prior to year-end are charged to cost of natural gas at the actual LIFO cost of the inventory layers liquidated.

Southern Company Gas recorded no material adjustments to natural gas inventories for either period presented. Nicor Gas' inventory decrements that occurred during the year have been restored as of June 30, 2026.

Asset Retirement Obligations

See BUSINESS – "Regulation – Federal Power Act" in Item 1 and Note 6 to the financial statements in Item 8 of the Form 10-K for additional information.

On April 16, 2026, the FERC issued a surrender order for Georgia Power's Langdale and Riverview hydroelectric projects, which includes dam removal obligations and other post-dam removal activities. As a result, in June 2026, Georgia Power recorded AROs of $46 million.

44

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

(B) REGULATORY MATTERS

See Note 2 to the financial statements in Item 8 of the Form 10-K for additional information relating to regulatory matters.

The recovery balances for retail fuel and storm/property damage for the traditional electric operating companies and natural gas cost for Southern Company Gas at June 30, 2026 and December 31, 2025 were as follows:

Recovery/Regulatory Clause	Balance Sheet Location	At June 30, 2026		At December 31, 2025
		(in millions)
Alabama Power
Rate ECR	Other regulatory assets, current	$	7	$	—
	Other regulatory assets, deferred	212		146
NDR	Other regulatory liabilities, deferred	29		60
Georgia Power
Fuel cost recovery	Receivables – under recovered retail fuel clause revenues	$	161	$	310
	Deferred under recovered retail fuel clause revenues	151		212
Storm damage recovery	Other regulatory assets, current	187		31
	Other regulatory assets, deferred	784		880
Mississippi Power
Fuel cost recovery(*)	Receivables – under recovered retail fuel clause revenues	$	55	$	—
	Deferred under recovered retail fuel clause revenues	—		40
Property damage reserve	Other regulatory liabilities, deferred	56		57
Southern Company Gas
Natural gas cost recovery	Natural gas cost over recovery	$	191	$	158

(*)Mississippi Power also has wholesale MRA and Market Based (MB) fuel cost recovery factors. At June 30, 2026 and December 31, 2025, wholesale MRA fuel cost under recovery was $10 million and $6 million, respectively, and was included in customer accounts receivable, net on Mississippi Power's balance sheets. The wholesale MB fuel cost recovery was immaterial for both periods presented.

Alabama Power

Power to the People Act

In December 2025, the Alabama PSC issued a consent order to keep retail rates stable through 2027. On April 2, 2026, the State of Alabama enacted legislation providing that retail base rates established and in place on October 1, 2026 may not be increased before January 1, 2029 for utilities that are regulated by the Alabama PSC and that provide retail electric service. The ultimate outcome of this matter cannot be determined at this time.

Reliability Reserve Accounting Order

In accordance with the notification provided to the Alabama PSC through its annual Rate RSE filing indicating plans to use $60 million of the reliability reserve, Alabama Power utilized $40 million of its reliability reserve during the first six months of 2026 for reliability-related transmission, distribution, and generation expenses. At June 30, 2026, Alabama Power's reliability reserve balance was $144 million.

Environmental Accounting Order

As a result of the planned conversion of Plant Barry Unit 5 from coal to natural gas, the unit's net book value no longer meets the criteria to be considered probable of abandonment, and, in the first quarter 2026, approximately $307 million was reclassified from other utility plant, net to plant in service on Alabama Power's and Southern Company's balance sheets.

45

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Georgia Power

Integrated Resource Plans

Certification Requests

On March 25, 2026, Georgia Interfaith Power & Light, Park Avenue Baptist Church, Unitarian Universalist Church of Savannah, Sierra Club, Adrien Webber, and Southern Alliance for Clean Energy filed a petition with the Fulton County Superior Court appealing the Georgia PSC's December 19, 2025 approval of Georgia Power's request for certification of resources totaling 9,885 MWs (2025 All-Source Certification). The petition requests a reversal of the 2025 All-Source Certification, including a decertification of at least 757 MWs of resources. Georgia Power intervened in the proceeding, and both the Georgia PSC and Georgia Power filed motions to dismiss on April 24, 2026 and June 23, 2026, respectively. Georgia Power believes the appeal has no merit; however, the ultimate outcome of this matter cannot be determined at this time.

On June 2, 2026, the FERC approved two affiliate PPAs with Southern Power procured under the 2022 IRP. These affiliate PPAs began in June 2026 with capacities of 638 MWs and 74 MWs. See Note (F) under "Georgia Power Lease Modification" for additional information.

2025 IRP

Pursuant to the final order for Georgia Power's 2025 IRP, on June 9, 2026, Georgia Power initiated a request for proposals for 2,000 MWs to 6,000 MWs of capacity resources with projected CODs or delivery commencement dates in 2032 and 2033.

Fuel Cost Recovery

On each of March 13, 2026, April 15, 2026, and May 14, 2026, Georgia Power filed an Interim Fuel Rider (IFR) notification and plan informing the Georgia PSC that Georgia Power's under recovered fuel balance accumulated since May 31, 2023 exceeded $200 million, as established in a Georgia PSC stipulation approved in 2023, as of February 28, 2026, March 31, 2026, and April 30, 2026, respectively. Georgia Power did not propose a fuel cost recovery rate change pursuant to these IFR notifications and plans.

On May 28, 2026, the Georgia PSC approved a stipulation among Georgia Power, the staff of the Georgia PSC, and certain intervenors to decrease annual fuel billings by 12.9%, or approximately $394 million, effective June 1, 2026. Under the approved stipulation, Georgia Power is required to file for an adjustment to its fuel cost recovery rates under an IFR prior to the next fuel case, subject to a maximum 40% cumulative change, if its under or over recovered fuel balance accumulated since May 31, 2026 exceeds $300 million. Within 30 days of the filing, the Georgia PSC will approve, modify, or reject any proposed fuel cost recovery rate adjustment. Georgia Power is scheduled to file its next fuel case no later than February 28, 2029. Changes in fuel rates have no significant effect on Georgia Power's net income but impact the related operating cash flows.

Storm Damage Recovery

On May 28, 2026, the Georgia PSC approved a stipulation among Georgia Power, the staff of the Georgia PSC, and certain intervenors regarding Georgia Power's recovery of storm restoration costs. Under the stipulation, the Georgia PSC approved the following:

•Recovery of $31 million annually for storm restoration costs incurred after December 31, 2025.

•Recovery of Georgia Power's adjusted regulatory asset balance totaling $869 million, as determined through the proceedings and stipulation, related to storm damage as of December 31, 2025 over a period of 67 months from June 1, 2026 through December 31, 2031, or $156 million annually.

Additionally, the stipulation provided for the treatment of the Internal Revenue Code §45U PTCs generated from Georgia Power's nuclear generating facilities in 2024 and 2025, in which Georgia Power agreed to use $77 million of these tax credits for the benefit of customers.

46

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Construction

At June 30, 2026, Georgia Power had recorded approximately $4.4 billion of combined capital costs, excluding AFUDC, for the projects reflected in the table below approved by the Georgia PSC through the 2023 IRP Update and certification requests in September and December 2025 authorized through its 2022 IRP. The total certified amounts related to these projects are approximately $19.5 billion, excluding AFUDC. The ultimate outcome of these matters cannot be determined at this time.

Resource/Project	Approximate Nameplate Capacity (MW)	Actual/Projected COD
Projects Under Construction at June 30, 2026
Battery Energy Storage
McGrau Ford Phase 2	265	Third quarter 2026
McGrau Ford Phase 1	265	Fourth quarter 2026
Hammond Phase 1	58	Fourth quarter 2026
Hammond Phase 2	193	Fourth quarter 2030
Twiggs County	200	Fourth quarter 2027
Wadley	260	Fourth quarter 2027
Bowen Phase 1	250	Fourth quarter 2028
Bowen Phase 2	250	Fourth quarter 2029
South Hall	250	Fourth quarter 2028
Wansley	500	Fourth quarter 2028
Yates Phase 1	320	Fourth quarter 2028
Yates Phase 2	250	Fourth quarter 2028
Thomson	500	Fourth quarter 2029
McIntosh	250	Fourth quarter 2030
Solar with Battery Energy Storage
Laurens County	200	Fourth quarter 2028
Plant Mitchell	150	Fourth quarter 2028
Combined Cycle
Plant Bowen Unit 7	741	Fourth quarter 2029
Plant Bowen Unit 8	741	Second quarter 2030
Plant Wansley Unit 10	727	Fourth quarter 2029
Plant Wansley Unit 11	727	Second quarter 2030
Plant McIntosh Unit 12	757	Fourth quarter 2030
Combustion Turbine
Plant Yates Unit 8(*)	442	Fourth quarter 2026
Plant Yates Unit 9(*)	442	Second quarter 2027
Plant Yates Unit 10(*)	442	Third quarter 2027
Projects Completed During the Six Months Ended June 30, 2026
Battery Energy Storage
Robins	128	March 2026
Moody	50	April 2026

(*)Pursuant to the 2023 IRP Update, cost recovery over the certified amount is limited.

47

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NOTES TO THE CONDENSED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Mississippi Power

Performance Evaluation Plan

On June 18, 2026, the Mississippi PSC approved Mississippi Power's annual retail PEP Evaluation Report for 2026, resulting in an annual increase in revenues of approximately 1.8%, or $20 million, primarily due to increases in investment and depreciation. In accordance with the PEP rate schedule, the increase became effective with the first billing cycle of January 2026.

Integrated Resource Plans

On March 9, 2026, in compliance with its IRP requirements, Mississippi Power submitted its mid-point update to its 2024 IRP to the Mississippi PSC, indicating that the retirement dates of Plant Daniel Unit 2 and Plant Watson Unit 4 will extend beyond 2028.

On July 7, 2026, the Mississippi PSC approved a request from Mississippi Power to convert either Plant Daniel Unit 1 or Unit 2 from a coal-fired unit to a natural gas-fired unit. Conversion of the declared unit is projected to be completed in 2029.

The remaining net book value of Plant Daniel Units 1 and 2 was approximately $481 million at June 30, 2026, and Mississippi Power is continuing to depreciate these units using approved rates. Until a unit is declared to be converted, Mississippi Power is unable to determine what portion of the net book value will remain in service upon a unit conversion. Mississippi Power expects to reclassify the remaining net book value of assets no longer in service upon a unit conversion or retirement to a regulatory asset to be amortized over a period to be determined by the Mississippi PSC in future proceedings, consistent with a 2020 order. The ultimate outcome of this matter cannot be determined at this time.

Environmental Compliance Overview Plan

On April 14, 2026, the Mississippi PSC approved Mississippi Power's annual ECO Plan filing for 2026, resulting in a $2 million annual increase in revenues effective with the first billing cycle of May 2026.

Ad Valorem Tax Adjustment

On June 12, 2026, Mississippi Power submitted its annual ad valorem tax adjustment filing for 2026 to the Mississippi PSC, which requested a $7 million annual increase in revenues. The ultimate outcome of this matter cannot be determined at this time.

System Restoration Rider

On June 18, 2026, the Mississippi PSC approved Mississippi Power's annual SRR filing for 2026, with no change in retail rates. Mississippi Power's minimum annual SRR accrual increased from $13.5 million to $13.7 million.

Reliability Reserve Accounting Order

On March 16, 2026, through its annual PEP Evaluation Report, Mississippi Power notified the Mississippi PSC of its intent to use a portion of its $59 million retail reliability reserve balance during 2026. On June 18, 2026, the Mississippi PSC approved the annual PEP filing which allowed for the use of approximately $7 million of the reliability reserve balance, which Mississippi Power utilized for reliability-related generation, transmission, and distribution expenses during the first six months of 2026. At June 30, 2026, Mississippi Power's retail reliability reserve balance was $52 million. See "Performance Evaluation Plan" herein for information regarding Mississippi Power's annual PEP filing.

Excess Accumulated Deferred Income Tax Accounting Order

On June 18, 2026, the Mississippi PSC approved approximately $21 million associated with certain federal excess accumulated deferred income taxes resulting from the Tax Reform Legislation to be credited back to customers over an 18-month period starting with the first billing cycle of July 2026.

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Southern Company Gas

Rate Proceedings

On June 16, 2026, in connection with Nicor Gas' 2023 general base rate case proceeding, the Illinois Appellate Court determined that the Illinois Commission did not provide sufficient support for its disallowance of $43 million of Nicor Gas' planned capital investments that were expected to be completed by December 31, 2024. As the disallowance related to planned capital investments for which costs had not yet been incurred, it was not included in the pre-tax charge to income recorded in 2023. This matter remains subject to further proceedings before the Illinois Commission and had no impact on the current period financial statements.

On July 21, 2026, Nicor Gas filed a petition for leave to appeal with the Illinois Supreme Court related to the capital structure approved in Nicor Gas' 2023 general base rate case proceeding. The Illinois Supreme Court is expected to rule on the petition on September 30, 2026.

The ultimate outcome of these matters cannot be determined at this time.

(C) CONTINGENCIES

See Note 3 to the financial statements in Item 8 of the Form 10-K for information relating to various lawsuits and other contingencies.

General Litigation Matters

The Registrants are involved in various matters being litigated and regulatory matters. The ultimate outcome of such pending or potential litigation or regulatory matters against each Registrant and any subsidiaries cannot be determined at this time; however, for current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on such Registrant's financial statements.

The Registrants intend to dispute the allegations raised in and vigorously defend against the pending legal challenges discussed below; however, the ultimate outcome of each of these matters cannot be determined at this time.

Southern Company

In July 2025, a purported class action complaint was filed in the U.S. District Court for the District of Maryland against two nuclear consulting companies and all U.S. commercial nuclear power operators, or affiliated entities, including Southern Company. The purported class of plaintiffs includes all persons employed in nuclear power generation by the defendants, including nuclear operators, nuclear engineers, and nuclear technicians, from May 1, 2003 to the present. The complaint alleges that, since at least May 2003, the nuclear power industry conspired to fix and suppress employee compensation for nuclear power generation employees in violation of federal antitrust law. Although not named as defendants, other entities are accused of having participated in the conspiracy alleged by the plaintiffs. The plaintiffs seek to recover, among other relief, unspecified monetary damages, including treble damages and attorneys' fees, and injunctive relief. In October 2025, Southern Company moved to dismiss the complaint. In November 2025, the plaintiffs filed an amended complaint naming Southern Nuclear, among others, as a defendant. In December 2025, Southern Company and Southern Nuclear filed a motion to dismiss the amended complaint. An adverse outcome could have a material impact on Southern Company's financial statements.

Alabama Power

In 2022, Mobile Baykeeper filed a citizen suit in the U.S. District Court for the Southern District of Alabama alleging that Alabama Power's plan to close the Plant Barry surface impoundment utilizing a closure-in-place methodology violates the Resource Conservation and Recovery Act (RCRA) and regulations governing CCR. Among other relief requested, Mobile Baykeeper sought a declaratory judgment that the RCRA and regulations governing CCR were being violated, preliminary and injunctive relief to prevent implementation of Alabama Power's closure plan, and the development of a closure plan that satisfies regulations governing CCR requirements.

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Later in 2022, Alabama Power filed a motion to dismiss the case. In 2024, the lawsuit was dismissed without prejudice by the U.S. District Court judge. Later in 2024, the U.S. District Court judge denied a motion to reconsider filed by the plaintiff, and the plaintiff filed a notice of appeal in the U.S. Court of Appeals for the Eleventh Circuit challenging the denial of the motion to reconsider the order of dismissal. On May 18, 2026, the U.S. Court of Appeals for the Eleventh Circuit overturned the dismissal and remanded the case to the U.S. District Court for further proceedings.

In 2023, the EPA issued a Notice of Potential Violations (NOPV) associated with Alabama Power's plan to close the Plant Barry surface impoundment. In 2024, Alabama Power reached a settlement with the EPA resolving two of the three allegations in the NOPV related to the groundwater monitoring system and the emergency action plan at the Plant Barry surface impoundment. The settlement did not resolve the EPA's allegation relating to Alabama Power's plan to close the Plant Barry surface impoundment. Alabama Power has affirmed to the EPA its position that it is in compliance with CCR requirements.

In July 2025, Coosa Riverkeeper filed a citizen suit in the U.S. District Court for the Northern District of Alabama alleging that Alabama Power's closure of the Plant Gadsden surface impoundment utilizing a closure-in-place methodology violates the RCRA and regulations governing CCR. Among other relief requested, Coosa Riverkeeper seeks declaratory judgment that Alabama Power is in violation of the RCRA and regulations governing CCR, and preliminary and injunctive relief to require Alabama Power to close the CCR unit and operate a groundwater monitoring system in a different manner to satisfy the RCRA and the regulations governing CCR requirements. In September 2025, Alabama Power filed a motion to dismiss the citizen suit.

These matters could have a material impact on Alabama Power's and Southern Company's financial statements, including ARO estimates and cash flows. See Note 6 to the financial statements in Item 8 of the Form 10-K for a discussion of Alabama Power's ARO liabilities.

Environmental Remediation

The Southern Company system must comply with environmental laws and regulations governing the handling and disposal of waste and releases of hazardous substances. Under these various laws and regulations, the Southern Company system could incur substantial costs to clean up affected sites. The traditional electric operating companies and the natural gas distribution utilities in Illinois and Georgia have each received authority from their respective state PSCs or other applicable state regulatory agencies to recover approved environmental remediation costs through regulatory mechanisms. These regulatory mechanisms are adjusted annually or as necessary within limits approved by the state PSCs or other applicable state regulatory agencies.

Georgia Power's environmental remediation liability was $15 million and $14 million at June 30, 2026 and December 31, 2025, respectively. Georgia Power has been designated or identified as a potentially responsible party at sites governed by the Georgia Hazardous Site Response Act and/or by the federal Comprehensive Environmental Response, Compensation, and Liability Act, and assessment and potential cleanup of such sites is expected.

Southern Company Gas' environmental remediation liability was $215 million and $227 million at June 30, 2026 and December 31, 2025, respectively, based on the estimated cost of environmental investigation and remediation at known former manufactured gas plant operating sites.

The ultimate outcome of these matters cannot be determined at this time; however, as a result of the regulatory treatment for environmental remediation expenses described above, the final disposition of these matters is not expected to have a material impact on the financial statements of the applicable Registrants.

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(D) REVENUE FROM CONTRACTS WITH CUSTOMERS AND LEASE INCOME

Revenue from Contracts with Customers

The Registrants generate revenues from a variety of sources, some of which are not accounted for as revenue from contracts with customers, such as leases, derivatives, and certain cost recovery mechanisms. Included in the wholesale electric revenues of the traditional electric operating companies and Southern Power are revenues associated with affiliate transactions. These revenues are generated through long-term PPAs or short-term energy sales made in accordance with the IIC, as approved by the FERC. Amounts related to these affiliate revenues are eliminated in consolidation for Southern Company. See Note 1 to the financial statements under "Affiliate Transactions" and "Revenues" in Item 8 of the Form 10-K for additional information. See "Lease Income" herein and Note (J) for additional information on revenue accounted for under lease and derivative accounting guidance, respectively.

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The following table disaggregates revenue from contracts with customers for the three and six months ended June 30, 2026 and 2025:

	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Three Months Ended June 30, 2026
Operating revenues
Retail electric revenues
Residential	$	2,007	$	720	$	1,208	$	79	$	—	$	—
Commercial	1,757		501		1,166		90		—		—
Industrial	1,021		441		471		109		—		—
Other	29		3		24		2		—		—
Total retail electric revenues	4,814		1,665		2,869		280		—		—
Natural gas distribution revenues
Residential	353		—		—		—		—		353
Commercial	89		—		—		—		—		89
Transportation	358		—		—		—		—		358
Industrial	6		—		—		—		—		6
Other	67		—		—		—		—		67
Total natural gas distribution revenues	873		—		—		—		—		873
Wholesale electric revenues
PPA energy revenues	301		47		40		8		218		—
PPA capacity revenues	145		18		32		25		89		—
Non-PPA revenues	64		55		19		80		43		—
Total wholesale electric revenues	510		120		91		113		350		—
Other natural gas revenues
Gas marketing services	73		—		—		—		—		73
Other	2		—		—		—		—		2
Total other natural gas revenues	75		—		—		—		—		75
Other revenues	450		62		212		11		4		—
Total revenue from contracts with customers	6,722		1,847		3,172		404		354		948
Other revenue sources(*)	255		116		(39)		(1)		181		18
Total operating revenues	$	6,977	$	1,963	$	3,133	$	403	$	535	$	966

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	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Six Months Ended June 30, 2026
Operating revenues
Retail electric revenues
Residential	$	4,010	$	1,493	$	2,358	$	159	$	—	$	—
Commercial	3,419		978		2,269		172		—		—
Industrial	1,962		855		909		198		—		—
Other	61		6		50		5		—		—
Total retail electric revenues	9,452		3,332		5,586		534		—		—
Natural gas distribution revenues
Residential	1,380		—		—		—		—		1,380
Commercial	342		—		—		—		—		342
Transportation	798		—		—		—		—		798
Industrial	30		—		—		—		—		30
Other	213		—		—		—		—		213
Total natural gas distribution revenues	2,763		—		—		—		—		2,763
Wholesale electric revenues
PPA energy revenues	796		93		104		11		610		—
PPA capacity revenues	294		36		76		46		172		—
Non-PPA revenues	156		175		63		250		88		—
Total wholesale electric revenues	1,246		304		243		307		870		—
Other natural gas revenues
Gas marketing services	355		—		—		—		—		355
Other	4		—		—		—		—		4
Total other natural gas revenues	359		—		—		—		—		359
Other revenues	945		140		449		26		8		—
Total revenue from contracts with customers	14,765		3,776		6,278		867		878		3,122
Other revenue sources(*)	609		279		(2)		8		338		35
Total operating revenues	$	15,374	$	4,055	$	6,276	$	875	$	1,216	$	3,157

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	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Three Months Ended June 30, 2025
Operating revenues
Retail electric revenues
Residential	$	2,021	$	725	$	1,217	$	79	$	—	$	—
Commercial	1,716		504		1,127		85		—		—
Industrial	1,015		432		496		87		—		—
Other	29		2		25		2		—		—
Total retail electric revenues	4,781		1,663		2,865		253		—		—
Natural gas distribution revenues
Residential	394		—		—		—		—		394
Commercial	94		—		—		—		—		94
Transportation	331		—		—		—		—		331
Industrial	7		—		—		—		—		7
Other	60		—		—		—		—		60
Total natural gas distribution revenues	886		—		—		—		—		886
Wholesale electric revenues
PPA energy revenues	310		58		50		2		210		—
PPA capacity revenues	154		29		35		17		85		—
Non-PPA revenues	60		36		10		100		59		—
Total wholesale electric revenues	524		123		95		119		354		—
Other natural gas revenues
Gas marketing services	81		—		—		—		—		81
Other	5		—		—		—		—		5
Total other natural gas revenues	86		—		—		—		—		86
Other revenues	457		67		206		9		8		—
Total revenue from contracts with customers	6,734		1,853		3,166		381		362		972
Other revenue sources(*)	239		115		(56)		19		184		7
Total operating revenues	$	6,973	$	1,968	$	3,110	$	400	$	546	$	979

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	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Six Months Ended June 30, 2025
Operating revenues
Retail electric revenues
Residential	$	4,087	$	1,531	$	2,403	$	153	$	—	$	—
Commercial	3,327		986		2,181		160		—		—
Industrial	1,930		822		940		168		—		—
Other	61		4		52		5		—		—
Total retail electric revenues	9,405		3,343		5,576		486		—		—
Natural gas distribution revenues
Residential	1,239		—		—		—		—		1,239
Commercial	292		—		—		—		—		292
Transportation	737		—		—		—		—		737
Industrial	26		—		—		—		—		26
Other	170		—		—		—		—		170
Total natural gas distribution revenues	2,464		—		—		—		—		2,464
Wholesale electric revenues
PPA energy revenues	723		112		134		5		491		—
PPA capacity revenues	299		57		74		34		169		—
Non-PPA revenues	136		106		19		233		121		—
Total wholesale electric revenues	1,158		275		227		272		781		—
Other natural gas revenues
Gas marketing services	337		—		—		—		—		337
Other	10		—		—		—		—		10
Total other natural gas revenues	347		—		—		—		—		347
Other revenues	954		150		436		30		14		—
Total revenue from contracts with customers	14,328		3,768		6,239		788		795		2,811
Other revenue sources(*)	420		212		(91)		33		318		7
Total operating revenues	$	14,748	$	3,980	$	6,148	$	821	$	1,113	$	2,818

(*)Other revenue sources relate to revenues from customers accounted for as derivatives and leases, alternative revenue programs primarily at Southern Company Gas, and cost recovery mechanisms and revenues (including those related to fuel costs) that meet other scope exceptions for revenues from contracts with customers at the traditional electric operating companies.

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(UNAUDITED)

Contract Balances

The following table reflects the closing balances of receivables, contract assets, and contract liabilities related to revenues from contracts with customers at June 30, 2026 and December 31, 2025:

	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Accounts Receivable
At June 30, 2026	$	3,155	$	860	$	1,549	$	122	$	136	$	448
At December 31, 2025	3,139		716		1,278		115		132		864
Contract Assets
At June 30, 2026	$	354	$	—	$	189	$	4	$	—	$	67
At December 31, 2025	294		3		160		—		—		67
Contract Liabilities
At June 30, 2026	$	329	$	7	$	123	$	—	$	1	$	—
At December 31, 2025	213		6		75		—		2		—

Contract assets for Georgia Power primarily relate to unregulated service agreements, where payment is contingent on project completion, and retail customer fixed bill programs, where payment is contingent upon Georgia Power's continued performance and the customer's continued participation in the program over a one-year contract term. Contract liabilities for Georgia Power primarily relate to cash collections recognized in advance of revenue for unregulated service agreements. Southern Company Gas' contract assets relate to work performed on an energy efficiency enhancement and upgrade contract with the U.S. General Services Administration. Southern Company Gas received cash advances totaling approximately $68 million from a third-party financial institution to fund work performed. These advances have been accounted for as long-term debt on the balance sheets. See Note 1 to the financial statements under "Affiliate Transactions" in Item 8 of the Form 10-K for additional information regarding the construction contract. At June 30, 2026 and December 31, 2025, Southern Company's unregulated distributed generation business had contract assets of $92 million and $63 million, respectively, and contract liabilities of $199 million and $132 million, respectively, for outstanding performance obligations, all of which are expected to be satisfied within one year.

Revenues recognized in the three and six months ended June 30, 2026, which were included in contract liabilities at December 31, 2025, were $26 million and $80 million, respectively, for Southern Company, $7 million and $18 million, respectively, for Georgia Power, and immaterial for the other Registrants. Contract liabilities are primarily classified as current on the balance sheets as the corresponding revenues are generally expected to be recognized within one year.

Remaining Performance Obligations

Southern Company's subsidiaries may enter into long-term contracts with customers in which revenues are recognized as performance obligations are satisfied over the contract term. For the traditional electric operating companies and Southern Power, these contracts primarily relate to PPAs whereby electricity and generation capacity are provided to a customer. The revenue recognized for the delivery of electricity is variable; however, certain PPAs include a fixed payment for fixed generation capacity over the term of the contract. Southern Company's unregulated distributed generation business also has partially satisfied performance obligations related

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to certain fixed price contracts. Revenues from contracts with customers related to these performance obligations remaining at June 30, 2026 are expected to be recognized as follows:

	2026 (remaining)		2027		2028		2029		2030		Thereafter
	(in millions)
Southern Company	$	668	$	826	$	472	$	413	$	416	$	3,130
Alabama Power	7		5		4		3		1		6
Georgia Power	37		69		46		22		22		146
Mississippi Power(*)	33		69		73		12		—		—
Southern Power(*)	184		349		389		393		393		2,978
Southern Company Gas	28		24		—		—		—		—

(*)Includes performance obligations related to affiliate PPAs with Georgia Power. See Note 1 to the financial statements under "Affiliate Transactions" in Item 8 of the Form 10-K for additional information.

Lease Income

Lease income for the three and six months ended June 30, 2026 and 2025 was as follows:

	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Three Months Ended June 30, 2026
Lease income - interest income on sales-type leases	$	5	$	—	$	—	$	3	$	2	$	—
Lease income - operating leases	34		3		7		1		27		9
Variable lease income	125		—		—		—		136		—
Total lease income	$	164	$	3	$	7	$	4	$	165	$	9
Six Months Ended June 30, 2026
Lease income - interest income on sales-type leases	$	12	$	—	$	—	$	7	$	4	$	—
Lease income - operating leases	69		6		15		2		64		18
Variable lease income	204		—		—		—		223		—
Total lease income	$	285	$	6	$	15	$	9	$	291	$	18
Three Months Ended June 30, 2025
Lease income - interest income on sales-type leases	$	6	$	—	$	—	$	4	$	2	$	—
Lease income - operating leases	33		2		7		1		37		9
Variable lease income	125		—		—		—		136		—
Total lease income	$	164	$	2	$	7	$	5	$	175	$	9
Six Months Ended June 30, 2025
Lease income - interest income on sales-type leases	$	11	$	—	$	—	$	7	$	4	$	—
Lease income - operating leases	66		3		14		1		73		18
Variable lease income	207		1		—		—		225		—
Total lease income	$	284	$	4	$	14	$	8	$	302	$	18

Lease payments received under tolling arrangements and PPAs consist of either scheduled payments or variable payments based on the amount of energy produced by the underlying electric generating units. Lease income related to PPAs is included in wholesale revenues for Alabama Power, Georgia Power, and Southern Power.

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(E) CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS

See Note 7 to the financial statements in Item 8 of the Form 10-K for additional information.

Southern Company

At June 30, 2026 and December 31, 2025, Southern Holdings had equity method investments totaling $156 million and $124 million, respectively, primarily related to investments in venture capital funds focused on energy and utility investments. The net earnings (losses) from these investments totaled $45 million and $(14) million for the three months ended June 30, 2026 and 2025, respectively, and $48 million and $(20) million for the six months ended June 30, 2026 and 2025, respectively.

Southern Power

Variable Interest Entities

Southern Power has certain subsidiaries that are determined to be VIEs. Southern Power is considered the primary beneficiary of these VIEs because it controls the most significant activities of the VIEs, including operating and maintaining the respective assets, and has the obligation to absorb expected losses of these VIEs to the extent of its equity interests.

SP Solar

At June 30, 2026 and December 31, 2025, SP Solar had total assets of $5.1 billion and $5.2 billion, respectively, total liabilities of $364 million and $360 million, respectively, and noncontrolling interests of $907 million and $918 million, respectively. Cash distributions from SP Solar are allocated 67% to Southern Power and 33% to the limited partner in accordance with their partnership interest percentage. Under the terms of the limited partnership agreement, distributions without limited partner consent are limited to available cash and SP Solar is obligated to distribute all such available cash to its partners each quarter. Available cash includes all cash generated in the quarter subject to the maintenance of appropriate operating reserves.

Southern Power consolidates SP Solar, as the primary beneficiary, since it controls the most significant activities of the entity, including operating and maintaining its assets. Certain transfers and sales of the assets in the VIE are subject to partner consent, and the liabilities are non-recourse to the general credit of Southern Power. Liabilities consist of customary working capital items and do not include any long-term debt.

Other Variable Interest Entities

Southern Power has other consolidated VIEs that relate to certain subsidiaries that have either sold noncontrolling interests to tax equity investors or acquired less than a 100% interest from facility developers. These entities are considered VIEs because the arrangements are structured similar to a limited partnership and the noncontrolling members do not have substantive kick-out rights.

At June 30, 2026 and December 31, 2025, the other VIEs had total assets of $1.5 billion and $1.6 billion, respectively, total liabilities of $259 million and $236 million, respectively, and noncontrolling interests of $563 million and $617 million, respectively. Under the terms of the partnership agreements, distributions of all available cash are required each month or quarter and additional distributions require partner consent.

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Southern Company Gas

The carrying amounts of Southern Company Gas' equity method investments at June 30, 2026 and December 31, 2025 were as follows:

Investment Balance	At June 30, 2026		At December 31, 2025
	(in millions)
SNG	$	1,220	$	1,148
Other	34		34
Total	$	1,254	$	1,182

The earnings from Southern Company Gas' equity method investment in SNG were $32 million and $23 million for the three months ended June 30, 2026 and 2025, respectively, and $77 million and $62 million for the six months ended June 30, 2026 and 2025, respectively. The earnings from Southern Company Gas' other equity method investments were immaterial for all periods presented.

(F) FINANCING AND LEASES

Bank Credit Arrangements

See Note 8 to the financial statements under "Bank Credit Arrangements" in Item 8 of the Form 10-K for additional information.

At June 30, 2026, committed credit arrangements with banks were as follows:

	Expires
Company	2026		2027		2028		2029		2031		Total		Unused		Expires within One Year
	(in millions)
Southern Company parent(a)	$	—	$	—	$	500	$	—	$	2,500	$	3,000	$	2,999	$	—
Alabama Power(b)	15		—		—		650		700		1,365		1,365		15
Georgia Power(c)	—		—		—		—		2,050		2,050		2,042		—
Mississippi Power(a)	—		—		—		125		150		275		275		—
Southern Power(a)(d)	—		—		—		—		600		600		600		—
Southern Company Gas(e)	—		—		—		—		1,600		1,600		1,598		—
SEGCO	—		30		—		—		—		30		30		30
Southern Company	$	15	$	30	$	500	$	775	$	7,600	$	8,920	$	8,909	$	45

(a)Arrangement expiring in 2031 represents a $3.25 billion combined arrangement for Southern Company, Mississippi Power, and Southern Power allowing for flexible sublimits. Pursuant to the combined facility, the allocations among Southern Company, Mississippi Power, and Southern Power may be adjusted.

(b)Includes $15 million expiring in 2026 at Alabama Property Company, a wholly-owned subsidiary of Alabama Power, of which $15 million was unused at June 30, 2026. Alabama Power is not party to this arrangement.

(c)Georgia Power had $26 million of letters of credit outstanding under an uncommitted letter of credit facility at June 30, 2026.

(d)Does not include Southern Power Company's $75 million and $100 million continuing letter of credit facilities for standby letters of credit, expiring in 2027 and 2029, respectively, of which $17 million and $4 million, respectively, was unused at June 30, 2026. In addition, Southern Power Company had $23 million of letters of credit outstanding under an uncommitted letter of credit facility at June 30, 2026. Southern Power's subsidiaries are not parties to its bank credit arrangements or letter of credit facilities.

(e)Southern Company Gas, as the parent entity, guarantees the obligations of Southern Company Gas Capital, which is the borrower of $800 million of the credit arrangement expiring in 2031. Southern Company Gas' committed credit arrangement expiring in 2031 also includes $800 million for which Nicor Gas is the borrower and which is restricted for working capital needs of Nicor Gas. Pursuant to the multi-year credit arrangement expiring in 2031, the allocations between Southern Company Gas Capital and Nicor Gas may be adjusted.

As reflected in the table above, in March 2026, (i) Southern Company, Mississippi Power, and Southern Power extended the maturity date of their $3.25 billion combined multi-year credit arrangement from 2030 to 2031, (ii)

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Southern Company extended the maturity date of its multi-year credit agreement from 2027 to 2028, (iii) Georgia Power extended the maturity date of its multi-year credit arrangement from 2030 to 2031, and (iv) Mississippi Power extended the maturity date of its multi-year credit arrangement from 2027 to 2029. In May 2026, Alabama Power and Southern Company Gas Capital, along with Nicor Gas, extended the maturity date of each of their respective multi-year credit arrangements from 2030 to 2031. In May and June 2026, SEGCO amended its credit arrangements to extend the maturity dates from 2026 to 2027.

Subject to applicable market conditions, Southern Company and its subsidiaries expect to renew or replace their bank credit arrangements as needed, prior to expiration. In connection therewith, Southern Company and its subsidiaries may extend the maturity dates and/or increase or decrease the lending commitments thereunder.

These bank credit arrangements, as well as the term loan arrangements of the Registrants, Nicor Gas, and SEGCO, contain covenants that limit debt levels and contain cross-acceleration provisions to other indebtedness (including guarantee obligations) that are restricted only to the indebtedness of the individual company. The cross-acceleration provisions to other indebtedness would trigger an event of default if the applicable borrower defaulted on indebtedness, the payment of which was then accelerated. At June 30, 2026, the Registrants, Nicor Gas, and SEGCO were in compliance with all such covenants. None of the bank credit arrangements contain material adverse change clauses at the time of borrowings.

A portion of the unused credit with banks is allocated to provide liquidity support to certain revenue bonds of the traditional electric operating companies and the commercial paper programs of the Registrants, Nicor Gas, and SEGCO. At June 30, 2026, outstanding variable rate demand revenue bonds of the traditional electric operating companies with allocated liquidity support totaled approximately $1.5 billion (comprised of approximately $796 million at Alabama Power, $667 million at Georgia Power, and $58 million at Mississippi Power). In addition, at June 30, 2026, Georgia Power had approximately $210 million of fixed rate revenue bonds outstanding that are required to be remarketed within the next 12 months. Variable rate demand revenue bonds and fixed rate revenue bonds required to be remarketed within the next 12 months are classified as long-term debt on the balance sheets as a result of available long-term committed credit.

DOE Loan Guarantee Borrowings

On February 20, 2026, pursuant to the loan guarantee program (DOE Loan Guarantee Program) established under Title XVII of the Energy Policy Act of 2005, as amended (Title XVII), Alabama Power entered into (i) a loan guarantee agreement, dated as of February 20, 2026 (Alabama Power LGA), between Alabama Power and the DOE, as guarantor, (ii) a note purchase agreement, dated as of February 20, 2026 (Alabama Power NPA), among Alabama Power, the FFB, and the Secretary of Energy, acting through the DOE, and (iii) future advance promissory notes, each dated February 20, 2026, made by Alabama Power to the FFB (each an Alabama Power FFB Note and, together with the Alabama Power NPA, the Alabama Power FFB Credit Facility Documents). The Alabama Power LGA and the Alabama Power FFB Credit Facility Documents are referred to herein together as the Alabama Power Loan Documents.

In addition, on February 20, 2026, pursuant to the DOE Loan Guarantee Program, Georgia Power entered into (i) a loan guarantee agreement, dated as of February 20, 2026 (Georgia Power LGA and, together with the Alabama Power LGA, the Loan Guarantee Agreements), between Georgia Power and the DOE, as guarantor, (ii) a note purchase agreement, dated as of February 20, 2026 (Georgia Power NPA), among Georgia Power, the FFB, and the Secretary of Energy, acting through the DOE, and (iii) future advance promissory notes, each dated February 20, 2026, made by Georgia Power to the FFB (each a Georgia Power FFB Note and, together with the Georgia Power NPA, the Georgia Power FFB Credit Facility Documents). The Georgia Power LGA and the Georgia Power FFB Credit Facility Documents are referred to herein together as the Georgia Power Loan Documents.

The Alabama Power FFB Credit Facility Documents provide for a multi-advance term loan facility under which Alabama Power may make term loan borrowings through the FFB (Alabama Power Credit Facility). The Georgia Power FFB Credit Facility Documents provide for a multi-advance term loan facility under which Georgia Power may make term loan borrowings through the FFB (Georgia Power Credit Facility and, together with the Alabama

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Power Credit Facility, the Credit Facilities). Each of Alabama Power and Georgia Power is referred to herein as a Borrower in connection with its applicable Credit Facility.

Proceeds of advances made under each Credit Facility must be used for the purpose of reimbursing the applicable Borrower for a portion (up to 80%) of "eligible project costs" (as defined in the applicable Loan Guarantee Agreement) incurred by such Borrower for projects that are eligible for financing under the terms of the applicable Loan Guarantee Agreement and the DOE Loan Guarantee Program (Eligible Projects). Eligible Projects may include new gas generating units and upgrades associated with existing gas generating units; new transmission lines, substations, and transmission system upgrades; new stand-alone battery energy storage systems; hydropower refurbishment and upgrades; upgrades, uprates, and license extensions for existing nuclear facilities; coal-to-gas conversions; and grid enhancements.

The aggregate amount of advances under the Alabama Power Credit Facility may not exceed approximately $4.1 billion (Alabama Power Maximum Facility Amount). The aggregate amount of advances under the Georgia Power Credit Facility may not exceed approximately $22.4 billion (Georgia Power Maximum Facility Amount and, together with the Alabama Power Maximum Facility Amount, the Maximum Facility Amounts). Each Borrower may request advances under its applicable Credit Facility during an availability period (with respect to each Borrower, the "availability period") that will continue until the earliest of (i) September 15, 2033, (ii) the date total advances reach the applicable Maximum Facility Amount, or (iii) the termination of the obligation to fund further advances following an event of default under the applicable Loan Guarantee Agreement. In addition, the FFB's obligation to fund advances to Alabama Power will terminate if Alabama Power has failed to request an initial advance by February 20, 2031.

In March 2026, Georgia Power received initial advances under the Georgia Power Credit Facility in an amount of approximately $1.0 billion at an interest rate of 5.041% through the final maturity date of December 10, 2055.

Future advances under each of the Credit Facilities are subject to confirmation of investment grade credit ratings and satisfaction of customary conditions, as well as certification of compliance with the requirements of Title XVII, including accuracy of project-related representation and warranties, delivery of updated project-related information, and evidence of compliance with the prevailing wage requirements of the Davis-Bacon Act of 1931, as amended (DOE Program Requirements), compliance with the Cargo Preference Act of 1954, and certification from the DOE's consulting engineer that proceeds of the advances are used to reimburse for eligible project costs.

All borrowings under each of the Credit Facilities will be full recourse, senior unsecured obligations of the respective Borrower. Alabama Power is not a party to, and has no obligations with respect to, the Georgia Power Credit Facility. Georgia Power is not a party to, and has no obligations with respect to, the Alabama Power Credit Facility.

The final scheduled maturity date for all borrowings under each Credit Facility is December 10, 2055. Each advance will bear interest at a rate equal to the applicable U.S. Treasury rate plus a spread of 0.375%, which rate will be determined at the time of the advance. Principal payments for the Alabama Power Credit Facility are payable in three equal annual installments, beginning on December 10, 2053. Principal payments for the Georgia Power Credit Facility are payable in seven equal annual installments, beginning on December 10, 2049.

Under each of the Loan Guarantee Agreements, the DOE agreed to provide guarantees with respect to the obligations of Alabama Power and Georgia Power under the Alabama Power FFB Credit Facility Documents and Georgia Power FFB Credit Facility Documents, respectively. Under their respective Loan Guarantee Agreements, Alabama Power and Georgia Power are obligated to reimburse the DOE for any amounts the DOE is required to pay with respect to such guarantees. Alabama Power's and Georgia Power's reimbursement obligations to the DOE are full recourse, senior unsecured obligations of the respective Borrower.

Under each Loan Guarantee Agreement, the applicable Borrower is subject to customary affirmative and negative covenants and events of default. In addition, Alabama Power and Georgia Power are subject to project-related reporting requirements and other project-specific covenants and events of default.

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Under each Loan Guarantee Agreement, the applicable Borrower will be required to prepay certain amounts outstanding under the applicable Credit Facility if (i) the applicable Borrower takes any action that causes an Eligible Project to cease to be an Eligible Project, (ii) certain "termination events" (as defined in the applicable Loan Guarantee Agreement) occur with respect to any Eligible Project of the applicable Borrower, (iii) eligible project costs recoverable in customer rates of the applicable Borrower are less than 95% of total advances made to the applicable Borrower under the applicable Credit Facility, with such amount tested on the third anniversary of the termination of the applicable availability period, or (iv) the applicable Borrower receives advances for certain preliminary costs and fails to satisfy the DOE Program Requirements. Any mandatory prepayment will be made in quarterly installments and, depending on the size of the required mandatory prepayment, will be payable over a period of one to three years (in the case of Alabama Power) or one to five years (in the case of Georgia Power). Any such mandatory prepayment will be at a prepayment price equal to 100% of the principal amount to be prepaid, plus accrued and unpaid interest to the date of prepayment.

In addition, if a "change of control" (as defined in the applicable Loan Guarantee Agreement) occurs with respect to the applicable Borrower, such Borrower will be required to offer to prepay all outstanding advances under its Credit Facility. Any such prepayment will be made with a make-whole premium or discount, as applicable.

Each Borrower will be permitted to voluntarily prepay all or a portion of any outstanding advances. Any such prepayment will be made with a make-whole premium or discount, as applicable.

Equity Distribution Agreement

See Note 8 to the financial statements under "Equity Distribution Agreement" in Item 8 of the Form 10-K for additional information.

In June 2026, Southern Company established a new at-the-market program and entered into an equity distribution agreement pursuant to which it may sell, from time to time, up to an aggregate of 50 million shares of its common stock, including through initially priced forward sale contracts and collared forward sale contracts (2026 ATM Program). In connection with the establishment of the 2026 ATM Program, Southern Company terminated further sales under its prior at-the-market program established in 2024 (2024 ATM Program).

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The table below reflects shares of Southern Company common stock sold and settled under separate initially priced forward sale contracts with forward purchasers during the six months ended June 30, 2026.

Shares Sold	Initial Forward Price per Share	To be Settled On or Before	Forward Price Per Share Settled	Shares Issued to Settle	Settlement Date
Sold during 2025 (2024 ATM Program)
3,255,866	$89.4692	December 31, 2026	$89.2443	3,255,866	March 2, 2026
2,314,487	$92.7805	June 30, 2027	$92.8723	2,314,487	March 2, 2026
3,850,000	$90.6617	December 31, 2026	$90.2362	3,850,000	June 1, 2026
2,470,306	$94.5394	June 30, 2027	$93.8913	2,470,306	June 1, 2026
1,590,200	$93.4524	June 30, 2027	$93.4038	1,590,200	June 1, 2026
4,000,000	$90.8141	June 30, 2027	$90.6358	4,000,000	June 12, 2026
2,876,034	$92.2437	June 30, 2027	$91.9664	2,876,034	June 12, 2026
3,015,668	$93.4521	June 30, 2027	$93.1290	3,015,668	June 12, 2026
3,130,641(a)	$88.2823	December 31, 2026	$88.0620	1,070,641	June 16, 2026
2,346,903	$91.1610	June 30, 2027	$90.9425	2,346,903	June 16, 2026
911,448	$94.2411	June 30, 2027	$93.9331	911,448	June 16, 2026
Sold during 2026 (2024 ATM Program)
1,467,305	$96.3883	March 31, 2028	N/A	N/A	N/A
1,896,549	$97.5815	March 31, 2028	N/A	N/A	N/A
1,903,317	$95.5086	March 31, 2028	N/A	N/A	N/A
Sold during 2026 (2026 ATM Program)
1,713,535	$93.2987	June 30, 2028	N/A	N/A	N/A
1,909,112	$92.4821	June 30, 2028	N/A	N/A	N/A
1,994,083	$95.1457	June 30, 2028	N/A	N/A	N/A
600,094(b)	$95.9974	June 30, 2028	N/A	N/A	N/A

(a)The total number of shares sold under this forward sale contract is 3,130,641, of which 1,070,641 shares were settled during the six months ended June 30, 2026. The other 2,060,000 shares were settled in December 2025.

(b)The total number of shares sold under this forward sale contract is 1,940,548, of which the remaining 1,340,454 shares were sold subsequent to June 30, 2026. The initial forward price was determined after the completion of sales by the forward seller in July 2026.

As of June 30, 2026, Southern Company had entered into separate forward sale contracts with forward purchasers for a total of 49,885,779 shares of common stock under the 2024 ATM Program, all of which had been sold by the forward sellers, and 7,557,278 shares of common stock under the 2026 ATM Program, of which 6,216,824 shares had been sold by the forward sellers. Of these shares, 27,701,553 were settled during the six months ended June 30, 2026, all under the 2024 ATM Program, in the form of shares at the initial forward price adjusted for interest earned and dividends paid from the forward sale date to the settlement date. The net proceeds from the shares settled during the six months ended June 30, 2026 were approximately $2.5 billion.

As of June 30, 2026, the total number of shares sold remaining under the forward sale contracts subject to settlement at a future date is 11,483,995. Each initial forward price is subject to adjustment under certain circumstances as specified in the respective forward sales contracts. Southern Company may settle each of the forward transactions in shares, cash, or net shares.

Earnings per Share

For Southern Company, the difference in computing basic and diluted EPS is attributable to awards outstanding under stock-based compensation plans, forward sale contracts pursuant to the equity distribution agreement, convertible senior notes, and equity units. EPS dilution resulting from stock-based compensation plans, forward sale contracts, and the equity units is determined using the treasury stock method. EPS dilution resulting from the convertible senior notes is determined using the net share settlement method. See "Equity Distribution Agreement"

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herein and Note 8 to the financial statements under "Convertible Senior Notes," "Equity Distribution Agreement," and "Equity Units" and Note 12 to the financial statements in Item 8 of the Form 10-K for additional information. Shares used to compute diluted EPS were as follows:

	Three Months Ended June 30,		Six Months Ended June 30,
	2026	2025	2026	2025
	(in millions)
As reported shares	1,137	1,101	1,130	1,100
Effect of stock-based compensation	3	6	3	6
Effect of convertible senior notes	—	1	—	1
Effect of forward sale contracts	1	—	1	—
Diluted shares	1,141	1,108	1,134	1,107

For all periods presented, an immaterial number of stock-based compensation awards was excluded from the diluted EPS calculation because the awards were anti-dilutive.

Georgia Power Lease Modification

See Note 9 to the financial statements in Item 8 of the Form 10-K for information on Georgia Power's leases. In June 2026, Georgia Power recognized a lease modification related to an existing affiliate PPA with Southern Power which converted from an operating lease to a finance lease upon its approval by the FERC. As a result, Georgia Power removed from its balance sheet operating lease right-of-use assets, net of amortization of $179 million and lease obligations of $197 million maturing through 2030 and recorded finance lease right-of-use assets of $1.3 billion and lease obligations of $1.3 billion maturing through 2045. See Note (B) under "Georgia Power – Integrated Resource Plans – Certification Requests" for additional information.

(G) INCOME TAXES

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

Cash Paid for Income Taxes

Alabama Power, Georgia Power, and Southern Power have entered into transferability agreements with non-affiliated parties to sell ITCs and PTCs at a discount to the generated credit value in 2024, 2025, and 2026. The discount is recorded as a reduction in tax credits recognized in the financial statements and does not have a material impact on results of operations. During the first six months of 2026, Alabama Power, Georgia Power, and Southern Power received cash of $39 million, $91 million, and $49 million, respectively, from credits transferred. The Southern Company system continues to explore the ability to efficiently monetize its tax credits through third-party transfer agreements.

During the first six months of 2026, pursuant to certain joint ownership agreements, Georgia Power paid $83 million to the other Vogtle Owners for advanced nuclear PTCs for Plant Vogtle Units 3 and 4. The gain was recognized as an income tax benefit and was immaterial.

Effective Tax Rate

Southern Company's effective tax rate is typically lower than the statutory rate due to employee stock plans' dividend deduction, non-taxable AFUDC equity at the traditional electric operating companies, flowback of excess deferred income taxes at the regulated utilities, and federal income tax benefits from ITCs and PTCs.

Details of significant changes in the effective tax rate for the applicable Registrants are provided herein.

Southern Company

Southern Company's effective tax rate was 14.1% for the six months ended June 30, 2026 compared to 21.1% for the corresponding period in 2025. The effective tax rate decrease was primarily due to a decrease in charges to a

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valuation allowance on certain state tax credit carryforwards at Georgia Power, an increase in federal PTCs at Southern Power, and an increase in amortization of federal PTCs at Georgia Power, partially offset by a decrease in the flowback of excess state deferred income taxes at Georgia Power.

Georgia Power

Georgia Power's effective tax rate was 14.3% for the six months ended June 30, 2026 compared to 21.7% for the corresponding period in 2025. The effective tax rate decrease was primarily due to a decrease in charges to a valuation allowance on certain state tax credit carryforwards and an increase in amortization of federal PTCs and ITCs, partially offset by a decrease in the flowback of excess state deferred income taxes.

Southern Power

Southern Power's effective tax benefit rate was (85.1)% for the six months ended June 30, 2026 compared to (7.0)% for the corresponding period in 2025. The effective tax benefit rate increase was primarily due to an increase in federal PTCs resulting from Southern Power's purchase of the noncontrolling membership interests in the SP Wind tax equity partnership, as well as a change in pre-tax earnings attributable to Southern Power, including the impact of accelerated depreciation related to wind repowering projects. See Note (K) under "Southern Power – Wind Repowering Projects" and Notes 5 and 15 to the financial statements under "Depreciation and Amortization – Southern Power" and "Southern Power – Purchase of Renewable Facility Interests," respectively, in Item 8 of the Form 10-K for additional information.

Southern Company Gas

Southern Company Gas' effective tax rate was 23.5% for the six months ended June 30, 2026 compared to 23.7% for the corresponding period in 2025. The effective tax rate decrease was primarily due to an increase in tax benefits related to certain state tax filing positions, offset by a decrease in the flowback of excess state deferred income taxes.

(H) RETIREMENT BENEFITS

The Southern Company system has a qualified defined benefit, trusteed, pension plan covering substantially all employees, with the exception of employees at PowerSecure. The qualified pension plan is funded in accordance with requirements of the Employee Retirement Income Security Act of 1974, as amended. No mandatory contributions to the qualified pension plan are anticipated for the year ending December 31, 2026. The Southern Company system also provides certain non-qualified defined benefits for a select group of management and highly compensated employees, which are funded on a cash basis. In addition, the Southern Company system provides certain medical care and life insurance benefits for retired employees through other postretirement benefit plans. The traditional electric operating companies fund other postretirement trusts to the extent required by their respective regulatory commissions.

See Note 11 to the financial statements in Item 8 of the Form 10-K for additional information.

On each Registrant's condensed statements of income, the service cost component of net periodic benefit costs is included in other operations and maintenance expenses and all other components of net periodic benefit costs are included in other income (expense), net. Components of the net periodic benefit costs for the three and six months ended June 30, 2026 and 2025 are presented in the following tables.

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(UNAUDITED)

	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Three Months Ended June 30, 2026
Pension Plans
Service cost	$	69	$	16	$	16	$	3	$	1	$	7
Interest cost	161		37		47		8		3		11
Expected return on plan assets	(322)		(78)		(100)		(14)		(4)		(22)
Amortization:
Prior service costs	—		—		1		—		—		(1)
Net (gain) loss	19		5		7		—		(1)		1
Net periodic pension income	$	(73)	$	(20)	$	(29)	$	(3)	$	(1)	$	(4)
Postretirement Benefits
Service cost	$	3	$	1	$	1	$	—	$	—	$	—
Interest cost	16		4		6		—		—		2
Expected return on plan assets	(22)		(8)		(8)		1		—		(2)
Amortization:
Net gain	(2)		(1)		—		—		—		(2)
Net periodic postretirement benefit cost (income)	$	(5)	$	(4)	$	(1)	$	1	$	—	$	(2)
Six Months Ended June 30, 2026
Pension Plans
Service cost	$	138	$	31	$	33	$	6	$	3	$	14
Interest cost	323		75		94		15		5		22
Expected return on plan assets	(644)		(157)		(199)		(29)		(8)		(43)
Amortization:
Prior service costs	—		—		1		—		—		(1)
Regulatory asset	—		—		—		—		—		3
Net (gain) loss	37		10		13		1		(1)		1
Net periodic pension income	$	(146)	$	(41)	$	(58)	$	(7)	$	(1)	$	(4)
Postretirement Benefits
Service cost	$	6	$	2	$	2	$	—	$	—	$	—
Interest cost	32		8		12		1		—		3
Expected return on plan assets	(45)		(17)		(16)		—		—		(4)
Amortization:
Prior service costs	1		—		—		—		—		—
Net gain	(4)		(1)		—		—		—		(4)
Net periodic postretirement benefit cost (income)	$	(10)	$	(8)	$	(2)	$	1	$	—	$	(5)

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(UNAUDITED)

	Southern Company		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company Gas
	(in millions)
Three Months Ended June 30, 2025
Pension Plans
Service cost	$	66	$	15	$	15	$	2	$	2	$	7
Interest cost	166		38		49		8		3		11
Expected return on plan assets	(320)		(78)		(99)		(14)		(4)		(22)
Amortization:
Prior service costs	—		—		1		—		—		(1)
Regulatory asset	—		—		—		—		—		4
Net (gain) loss	10		4		3		—		(2)		—
Net periodic pension income	$	(78)	$	(21)	$	(31)	$	(4)	$	(1)	$	(1)
Postretirement Benefits
Service cost	$	3	$	1	$	1	$	—	$	—	$	—
Interest cost	18		4		7		—		—		2
Expected return on plan assets	(22)		(9)		(8)		—		—		(2)
Amortization:
Regulatory asset	—		—		—		—		—		2
Net (gain) loss	(4)		—		(2)		1		—		(2)
Net periodic postretirement benefit cost (income)	$	(5)	$	(4)	$	(2)	$	1	$	—	$	—
Six Months Ended June 30, 2025
Pension Plans
Service cost	$	132	$	30	$	31	$	5	$	3	$	13
Interest cost	332		77		98		15		5		22
Expected return on plan assets	(640)		(156)		(198)		(29)		(8)		(43)
Amortization:
Prior service costs	—		—		1		—		—		(1)
Regulatory asset	—		—		—		—		—		8
Net (gain) loss	19		6		7		1		(1)		—
Net periodic pension income	$	(157)	$	(43)	$	(61)	$	(8)	$	(1)	$	(1)
Postretirement Benefits
Service cost	$	6	$	2	$	2	$	—	$	—	$	—
Interest cost	35		8		13		1		—		4
Expected return on plan assets	(45)		(18)		(16)		—		—		(4)
Amortization:
Prior service costs	1		—		—		—		—		—
Regulatory asset	—		—		—		—		—		3
Net gain	(7)		—		(2)		—		—		(4)
Net periodic postretirement benefit cost (income)	$	(10)	$	(8)	$	(3)	$	1	$	—	$	(1)

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(UNAUDITED)

(I) FAIR VALUE MEASUREMENTS

At June 30, 2026, assets and liabilities measured at fair value on a recurring basis during the period, together with their associated level of the fair value hierarchy, were as follows:

	Fair Value Measurements Using
At June 30, 2026	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Net Asset Value as a Practical Expedient (NAV)		Total
	(in millions)
Southern Company
Assets:
Energy-related derivatives(a)	$	8	$	61	$	—	$	—	$	69
Interest rate derivatives	—		5		—		—		5
Investments in trusts:(b)
Domestic equity	1,030		293		—		—		1,323
Foreign equity	199		256		—		—		455
U.S. Treasury and government agency securities	—		410		—		—		410
Municipal bonds	—		31		—		—		31
Pooled funds – fixed income	—		4		—		—		4
Corporate bonds	—		533		—		—		533
Mortgage- and asset-backed securities	—		110		—		—		110
Private equity	—		—		—		202		202
Cash and cash equivalents	1		—		—		—		1
Other	33		4		—		9		46
Investments, available-for-sale:
U.S. Treasury and government agency securities	1		12		—		—		13
Municipal bonds	—		2		—		—		2
Corporate bonds	—		4		—		—		4
Mortgage- and asset-backed securities	—		3		—		—		3
Cash equivalents	1,768		18		—		—		1,786
Other investments	10		35		8		—		53
Other	—		—		10		—		10
Total	$	3,050	$	1,781	$	18	$	211	$	5,060
Liabilities:
Energy-related derivatives(a)	$	11	$	155	$	—	$	—	$	166
Interest rate derivatives	—		205		—		—		205
Foreign currency derivatives	—		63		—		—		63
Contingent consideration	—		—		12		—		12
Other	—		13		11		—		24
Total	$	11	$	436	$	23	$	—	$	470

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	Fair Value Measurements Using
At June 30, 2026	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Net Asset Value as a Practical Expedient (NAV)		Total
	(in millions)
Alabama Power
Assets:
Energy-related derivatives	$	—	$	27	$	—	$	—	$	27
Nuclear decommissioning trusts:(b)
Domestic equity	569		282		—		—		851
Foreign equity	199		—		—		—		199
U.S. Treasury and government agency securities	—		16		—		—		16
Municipal bonds	—		1		—		—		1
Corporate bonds	—		319		—		—		319
Mortgage- and asset-backed securities	—		28		—		—		28
Private equity	—		—		—		202		202
Other	14		2		—		9		25
Cash equivalents	40		18		—		—		58
Other investments	—		35		—		—		35
Total	$	822	$	728	$	—	$	211	$	1,761
Liabilities:
Energy-related derivatives	$	—	$	58	$	—	$	—	$	58
Georgia Power
Assets:
Energy-related derivatives	$	—	$	14	$	—	$	—	$	14
Nuclear decommissioning trusts:(b)
Domestic equity	461		1		—		—		462
Foreign equity	—		254		—		—		254
U.S. Treasury and government agency securities	—		394		—		—		394
Municipal bonds	—		30		—		—		30
Corporate bonds	—		214		—		—		214
Mortgage- and asset-backed securities	—		82		—		—		82
Other	19		2		—		—		21
Cash equivalents	11		—		—		—		11
Total	$	491	$	991	$	—	$	—	$	1,482
Liabilities:
Energy-related derivatives	$	—	$	48	$	—	$	—	$	48

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	Fair Value Measurements Using
At June 30, 2026	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Net Asset Value as a Practical Expedient (NAV)		Total
	(in millions)
Mississippi Power
Assets:
Energy-related derivatives	$	—	$	14	$	—	$	—	$	14
Cash equivalents	1		—		—		—		1
Total	$	1	$	14	$	—	$	—	$	15
Liabilities:
Energy-related derivatives	$	—	$	40	$	—	$	—	$	40
Southern Power
Assets:
Energy-related derivatives	$	—	$	3	$	—	$	—	$	3
Cash equivalents	162		—		—		—		162
Other	—		—		10		—		10
Total	$	162	$	3	$	10	$	—	$	175
Liabilities:
Energy-related derivatives	$	—	$	4	$	—	$	—	$	4
Contingent consideration	—		—		12		—		12
Other	—		13		11		—		24
Total	$	—	$	17	$	23	$	—	$	40
Southern Company Gas
Assets:
Energy-related derivatives(a)	$	8	$	3	$	—	$	—	$	11
Non-qualified deferred compensation trusts:
Domestic equity	—		10		—		—		10
Foreign equity	—		2		—		—		2
Pooled funds – fixed income	—		4		—		—		4
Cash and cash equivalents	1		—		—		—		1
Cash equivalents	200		—		—		—		200
Total	$	209	$	19	$	—	$	—	$	228
Liabilities:
Energy-related derivatives(a)	$	11	$	5	$	—	$	—	$	16
Interest rate derivatives	—		62		—		—		62
Total	$	11	$	67	$	—	$	—	$	78

(a)Excludes cash collateral of $18 million.

(b)Excludes receivables related to investment income, pending investment sales, payables related to pending investment purchases, and currencies. See Note 6 to the financial statements under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.

Southern Company, Alabama Power, and Georgia Power continue to elect the option to fair value investment securities held in the nuclear decommissioning trust funds. The fair value of the funds, including reinvested interest and dividends and excluding the funds' expenses, increased (decreased) by the amounts shown in the table below for

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the three and six months ended June 30, 2026 and 2025. The changes were recorded as a change to the regulatory assets and liabilities related to AROs for Georgia Power and Alabama Power, respectively.

	Three Months Ended June 30,				Six Months Ended June 30,
Fair value increases (decreases)	2026		2025		2026		2025
	(in millions)
Southern Company	$	249	$	165	$	205	$	159
Alabama Power	156		99		126		86
Georgia Power	93		66		79		73

Valuation Methodologies

The energy-related derivatives primarily consist of exchange-traded and over-the-counter financial products for natural gas and physical power products, including, from time to time, basis swaps. These are standard products used within the energy industry and are valued using the market approach. The inputs used are mainly from observable market sources, such as forward natural gas prices, power prices, implied volatility, and overnight index swap interest rates. Interest rate derivatives are also standard over-the-counter products that are valued using observable market data and assumptions commonly used by market participants. The fair value of interest rate derivatives reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future interest rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and occasionally, implied volatility of interest rate options. The fair value of cross-currency swaps reflects the net present value of expected payments and receipts under the swap agreement based on the market's expectation of future foreign currency exchange rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk, and discount rates. The interest rate derivatives and cross-currency swaps are categorized as Level 2 under Fair Value Measurements as these inputs are based on observable data and valuations of similar instruments. See Note (J) for additional information on how these derivatives are used.

For fair value measurements of the investments within the nuclear decommissioning trusts and the non-qualified deferred compensation trusts, external pricing vendors are designated for each asset class with each security specifically assigned a primary pricing source. For investments held within commingled funds, fair value is determined at the end of each business day through the net asset value, which is established by obtaining the underlying securities' individual prices from the primary pricing source. A market price secured from the primary source vendor is then evaluated by management in its valuation of the assets within the trusts. As a general approach, fixed income market pricing vendors gather market data (including indices and market research reports) and integrate relative credit information, observed market movements, and sector news into proprietary pricing models, pricing systems, and mathematical tools. Dealer quotes and other market information, including live trading levels and pricing analysts' judgments, are also obtained when available.

The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. See Note 6 to the financial statements under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.

Southern Company's investments, available for sale relate to a wholly-owned subsidiary that insures various risk exposures of Southern Company and its subsidiaries. Corporate and municipal bonds, government agency securities, and commercial paper are valued using pricing models maximizing the use of observable inputs for similar securities, including basing value on yields currently available on comparable securities of issues with similar credit ratings. Mortgage- and asset-backed securities are valued through an analysis of the underlying assets and a review of the documentation, including financials, the manager's valuation methodology in valuing their underlying assets, the types of assets and risks involved, and the investor's exit and termination parameters.

Southern Power has contingent payment obligations related to two of its acquisitions whereby it is primarily obligated to make generation-based payments to the seller, commencing at the commercial operation of each facility

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and continuing through 2026 and 2036, respectively. The obligations are primarily categorized as Level 3 under Fair Value Measurements as the fair value is determined using significant unobservable inputs for the forecasted facility's generation in MW-hours, as well as other inputs such as a fixed dollar amount per MW-hour, and a discount rate. The fair value of the obligations reflects the net present value of expected payments and any periodic change arising from forecasted generation is expected to be immaterial.

Southern Power also has payment obligations through 2040 whereby it must reimburse the transmission owners for interconnection facilities and network upgrades constructed to support connection of a Southern Power generating facility to the transmission system. The obligations are categorized as Level 2 under Fair Value Measurements as the fair value is determined using observable inputs for the contracted amounts and reimbursement period, as well as a discount rate. The fair value of the obligations reflects the net present value of expected payments.

"Other investments" primarily includes investments traded in the open market that have maturities greater than 90 days, which are categorized as Level 2 under Fair Value Measurements and are comprised of corporate bonds, bank certificates of deposit, treasury bonds, and/or agency bonds.

At June 30, 2026, the fair value measurements of private market investments held in Alabama Power's nuclear decommissioning trusts that are calculated at net asset value per share (or its equivalent) as a practical expedient totaled $211 million and unfunded commitments related to the private market investments totaled $94 million. Private market investments include high-quality private equity funds across several market sectors, funds that invest in real estate assets, and private credit funds. Private market funds do not have redemption rights. Distributions from these funds will be received as the underlying investments in the funds are liquidated.

At June 30, 2026, other financial instruments for which the carrying amount did not equal fair value were as follows:

	Southern    Company(*)		Alabama Power		Georgia Power		Mississippi Power		Southern Power		Southern Company    Gas(*)
	(in billions)
Long-term debt, including securities due within one year:
Carrying amount	$	72.7	$	12.0	$	22.3	$	1.8	$	3.0	$	9.3
Fair value	68.0		10.7		20.7		1.7		2.9		8.4

(*)The carrying amount of Southern Company Gas' long-term debt includes fair value adjustments from the effective date of the 2016 merger with Southern Company. Southern Company Gas amortizes the fair value adjustments over the remaining lives of the respective bonds, the latest being through 2043.

The fair values are determined using Level 2 measurements and are based on quoted market prices for the same or similar issues or on the current rates available to the Registrants.

(J) DERIVATIVES

The Registrants are exposed to market risks, including commodity price risk, interest rate risk, weather risk, and occasionally foreign currency exchange rate risk. To manage the volatility attributable to these exposures, each company nets its exposures, where possible, to take advantage of natural offsets and enters into various derivative transactions for the remaining exposures pursuant to each company's policies in areas such as counterparty exposure and risk management practices. Each company's policy is that derivatives are to be used primarily for hedging purposes and mandates strict adherence to all applicable risk management policies. Derivative positions are monitored using techniques including, but not limited to, market valuation, value at risk, stress testing, and sensitivity analysis. Derivative instruments are recognized at fair value in the balance sheets as either assets or liabilities and are presented on a net basis. See Note (I) for additional fair value information. In the statements of cash flows, any cash impacts of settled energy-related and interest rate derivatives are recorded as operating activities. Any cash impacts of settled foreign currency derivatives are classified as operating or financing activities to correspond with the classification of the hedged interest or principal, respectively. See Note 1 to the financial statements under "Financial Instruments" in Item 8 of the Form 10-K for additional information.

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Energy-Related Derivatives

The Subsidiary Registrants enter into energy-related derivatives to hedge exposures to electricity, natural gas, and other fuel price changes. However, due to cost-based rate regulations and other various cost recovery mechanisms, the traditional electric operating companies and the natural gas distribution utilities have limited exposure to market volatility in energy-related commodity prices. Each of the traditional electric operating companies and certain of the natural gas distribution utilities manage fuel-hedging programs, implemented per the guidelines of their respective state PSCs or other applicable state regulatory agencies, through the use of financial derivative contracts, which are expected to continue to mitigate price volatility. The traditional electric operating companies (with respect to wholesale generating capacity) and Southern Power have limited exposure to market volatility in energy-related commodity prices because their long-term sales contracts shift substantially all fuel cost responsibility to the purchaser. However, the traditional electric operating companies and Southern Power may be exposed to market volatility in energy-related commodity prices to the extent any uncontracted capacity is used to sell electricity. Southern Company Gas retains exposure to price changes that can, in a volatile energy market, be material and can adversely affect its results of operations.

Southern Company Gas also enters into weather derivative contracts as economic hedges in the event of warmer-than-normal weather. Exchange-traded options are carried at fair value, with changes reflected in natural gas revenues. Non-exchange-traded options are accounted for using the intrinsic value method. Changes in the intrinsic value for non-exchange-traded contracts are reflected in natural gas revenues.

Energy-related derivative contracts are accounted for under one of three methods:

•Regulatory Hedges – Energy-related derivative contracts designated as regulatory hedges relate primarily to the traditional electric operating companies' and the natural gas distribution utilities' fuel-hedging programs, where gains and losses are initially recorded as regulatory liabilities and assets, respectively, and then are included in fuel expense as the underlying fuel is used in operations and ultimately recovered through an approved cost recovery mechanism.

•Cash Flow Hedges – Gains and losses on energy-related derivatives designated as cash flow hedges (which are mainly used to hedge anticipated purchases and sales) are initially deferred in accumulated OCI before being recognized in the statements of income in the same period and in the same income statement line item as the earnings effect of the hedged transactions.

•Not Designated – Gains and losses on energy-related derivative contracts that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.

Some energy-related derivative contracts require physical delivery as opposed to financial settlement, and this type of derivative is both common and prevalent within the electric and natural gas industries. When an energy-related derivative contract is settled physically, any cumulative unrealized gain or loss is reversed and the contract price is recognized in the respective line item representing the actual price of the underlying goods being delivered.

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At June 30, 2026, the net volume of energy-related derivative contracts for natural gas positions, together with the longest hedge date over which the respective entity is hedging its exposure to the variability in future cash flows for forecasted transactions and the longest non-hedge date for derivatives not designated as hedges, were as follows:

	Net Purchased mmBtu	Longest Hedge Date	Longest Non-Hedge Date
	(in millions)
Southern Company(*)	469	2030	2029
Alabama Power	155	2029	2026
Georgia Power	117	2028	2026
Mississippi Power	114	2030	2026
Southern Power	8	2030	2026
Southern Company Gas(*)	75	2028	2029

(*)Southern Company Gas' derivative instruments include both long and short natural gas positions. A long position is a contract to purchase natural gas and a short position is a contract to sell natural gas. Southern Company Gas' volume represents the net of 85 million mmBtu long natural gas positions and 10 million mmBtu short natural gas positions at June 30, 2026, which is also included in Southern Company's total volume.

In addition to the volumes discussed above, the traditional electric operating companies and Southern Power enter into physical natural gas supply contracts that provide the option to sell back excess natural gas due to operational constraints. The maximum expected volume of natural gas subject to such a feature is 15 million mmBtu for Southern Company, which includes 4 million mmBtu for Alabama Power, 6 million mmBtu for Georgia Power, 2 million mmBtu for Mississippi Power, and 3 million mmBtu for Southern Power.

For cash flow hedges of energy-related derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to earnings for the 12-month period ending June 30, 2027 are immaterial for Southern Company, Alabama Power, Mississippi Power, Southern Power, and Southern Company Gas.

Interest Rate Derivatives

Southern Company and certain subsidiaries may enter into interest rate derivatives to hedge exposure to changes in interest rates. Derivatives related to existing variable rate securities or forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and presented on the same income statement line item as the earnings effect of the hedged transactions. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item. Fair value gains or losses on derivatives that are not designated or fail to qualify as hedges are recognized in the statements of income as incurred.

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At June 30, 2026, the following interest rate derivatives were outstanding:

	Notional Amount		Weighted Average Interest Rate Paid	Interest Rate Received	Hedge Maturity Date	Fair Value Gain (Loss) at June 30, 2026
	(in millions)					(in millions)
Fair Value Hedges of Existing Debt
Southern Company parent	$	400	1-day SOFR + 0.80%	1.75%	March 2028	$	(23)
Southern Company parent	1,000		1-day SOFR + 2.48%	3.70%	April 2030	(103)
Southern Company parent	565		1-day SOFR + 1.56%	6.50%	March 2045	(12)
Southern Company Gas	500		1-day SOFR + 0.49%	1.75%	January 2031	(62)
Southern Company	$	2,465				$	(200)

For cash flow hedges of interest rate derivatives, the estimated pre-tax gains (losses) expected to be reclassified from accumulated OCI to interest expense for the 12-month period ending June 30, 2027 are immaterial for Southern Company, the traditional electric operating companies, and Southern Company Gas. Deferred gains and losses related to interest rate derivatives are expected to be amortized into earnings through 2054 for Southern Company, Georgia Power, and Mississippi Power, 2052 for Alabama Power, and 2046 for Southern Company Gas.

Foreign Currency Derivatives

Southern Company and certain subsidiaries may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Derivatives related to forecasted transactions are accounted for as cash flow hedges where the derivatives' fair value gains or losses are recorded in OCI and are reclassified into earnings at the same time and on the same income statement line as the earnings effect of the hedged transactions, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives' fair value gains or losses and hedged items' fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Southern Company has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of OCI.

At June 30, 2026, the following foreign currency derivatives were outstanding:

	Pay Notional		Pay Rate	Receive Notional		Receive Rate	Hedge Maturity Date	Fair Value Gain (Loss) at June 30, 2026
	(in millions)			(in millions)				(in millions)
Fair Value Hedges of Existing Debt
Southern Company parent	$	1,476	3.39%	€	1,250	1.88%	September 2027	$	(63)

Derivative Financial Statement Presentation and Amounts

The Registrants enter into derivative contracts that may contain certain provisions that permit intra-contract netting of derivative receivables and payables for routine billing and offsets related to events of default and settlements. Southern Company and certain subsidiaries also utilize master netting agreements to mitigate exposure to counterparty credit risk. The fair value amounts of derivative assets and liabilities on the balance sheets are presented net to the extent that there are netting arrangements or similar agreements with the counterparties.

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The fair value of energy-related derivatives, interest rate derivatives, and foreign currency derivatives was reflected as either assets or liabilities in the balance sheets (included in "Other" or shown separately as "Risk Management Activities") as follows:

	At June 30, 2026				At December 31, 2025
Derivative Category and Balance Sheet Location	Assets		Liabilities		Assets		Liabilities
	(in millions)
Southern Company
Energy-related derivatives designated as hedging instruments for regulatory purposes
Current	$	28	$	89	$	24	$	64
Non-current	30		60		31		35
Total derivatives designated as hedging instruments for regulatory purposes	58		149		55		99
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Current	3		12		1		6
Non-current	2		1		2		1
Interest rate derivatives:
Current	5		52		8		48
Non-current	—		153		—		139
Foreign currency derivatives:
Current	—		23		17		22
Non-current	—		40		4		—
Total derivatives designated as hedging instruments in cash flow and fair value hedges	10		281		32		216
Energy-related derivatives not designated as hedging instruments
Current	6		4		6		6
Gross amounts recognized	74		434		93		321
Gross amounts offset(a)	(39)		(57)		(21)		(54)
Net amounts recognized in the Balance Sheets(b)	$	35	$	377	$	72	$	267
Alabama Power
Energy-related derivatives designated as hedging instruments for regulatory purposes
Current	$	15	$	31	$	9	$	18
Non-current	12		25		10		13
Total derivatives designated as hedging instruments for regulatory purposes	27		56		19		31
Derivatives designated as hedging instruments in cash flow and fair value hedges
Energy-related derivatives:
Current	—		2		—		—
Gross amounts recognized	27		58		19		31
Gross amounts offset	(16)		(16)		(13)		(13)
Net amounts recognized in the Balance Sheets	$	11	$	42	$	6	$	18

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	At June 30, 2026				At December 31, 2025
Derivative Category and Balance Sheet Location	Assets		Liabilities		Assets		Liabilities
	(in millions)
Georgia Power
Energy-related derivatives designated as hedging instruments for regulatory purposes
Current	$	5	$	32	$	7	$	23
Non-current	7		16		10		10
Total derivatives designated as hedging instruments for regulatory purposes	12		48		17		33