8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) November 2, 2023

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)

Ten Peachtree Place, N.E.

Atlanta, Georgia 30309

(404) 584-4000

The names and addresses of the registrants have not changed since the last report.

This combined Form 8-K is furnished separately by six registrants: The Southern Company, Alabama Power Company, Georgia Power Company, Mississippi Power Company, Southern Power Company and Southern Company Gas. Information contained herein relating to each registrant is furnished by each registrant solely on its own behalf. Each registrant makes no representation as to information relating to the other registrants.

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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 $5 per share	SO	New York Stock Exchange
The Southern Company	Series 2017B 5.25% Junior Subordinated Notes due 2077	SOJC	New York Stock Exchange
The Southern Company	Series 2020A 4.95% Junior Subordinated Notes due 2080	SOJD	New York Stock Exchange
The Southern Company	Series 2020C 4.20% Junior Subordinated Notes due 2060	SOJE	New York Stock Exchange
The Southern Company	Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081	SO 81	New York Stock Exchange
Georgia Power Company	Series 2017A 5.00% Junior Subordinated Notes due 2077	GPJA	New York Stock Exchange
Southern Power Company	Series 2016B 1.850% Senior Notes due 2026	SO/26A	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). (Response applicable to each registrant)

Emerging growth company  ☐

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.  ☐

Item 2.02 Results of Operations and Financial Condition

The information in this Current Report on Form 8-K, including the exhibits attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under that Section. Furthermore, such information, including the exhibits attached hereto, shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

On November 2, 2023, The Southern Company (“Southern Company”) issued a press release regarding its earnings for the three-month and nine-month periods ended September 30, 2023. A copy of this release is being furnished as Exhibit 99.01 to this Current Report on Form 8-K. In addition, certain additional information regarding the financial results for the three-month and nine-month periods ended September 30, 2023 is being furnished as Exhibits 99.02 through 99.07 to this Current Report on Form 8-K.

Use of Non-GAAP Financial Measures

Exhibits 99.01, 99.02, 99.03 and 99.04 to this Current Report on Form 8-K include earnings and earnings per share in accordance with generally accepted accounting principles (“GAAP”) for the three-month and nine-month periods ended September 30, 2023 and 2022. These exhibits also include earnings and earnings per share (1) for the three-month and nine-month periods ended September 30, 2023 and 2022, excluding (a) charges and credits (net of salvage proceeds), associated legal expenses (net of insurance recoveries), and tax impacts related to plants under construction and (b) acquisition and disposition impacts and (2) for the nine-month period ended September 30, 2023, excluding (a) costs related to the extinguishment of debt at Southern Company and (b) a charge related to a disallowance at Northern Illinois Gas Company. The attached exhibits include additional information regarding these excluded items, as well as reconciliations of each non-GAAP financial measure to the most comparable financial measure under GAAP. Southern Company believes the presentation of earnings and earnings

per share, excluding these items, is useful to investors because it provides investors with additional information to evaluate the performance of Southern Company’s ongoing business activities.  Southern Company management also uses earnings and earnings per share, excluding the effect of these items, to evaluate the performance of Southern Company’s ongoing business activities.  The presentation of this additional information is not meant to be considered a substitute for financial measures prepared in accordance with GAAP.

Exhibits

The exhibits hereto contain business segment information for Alabama Power Company, Georgia Power Company, Mississippi Power Company, Southern Power Company and Southern Company Gas. Accordingly, this report is also being furnished on behalf of each such registrant.

The following exhibits relate to the three-month and nine-month periods ended September 30, 2023:

Exhibit 99.01	Press Release.
Exhibit 99.02	Financial Highlights.
Exhibit 99.03	Significant Factors Impacting EPS.
Exhibit 99.04	EPS Earnings Analysis.
Exhibit 99.05	Consolidated Earnings.
Exhibit 99.06	Kilowatt-Hour Sales and Customers.
Exhibit 99.07	Financial Overview.
Exhibit 104	Cover Page Interactive Data File – The cover page iXBRL tags are embedded within the inline XBRL document.

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each of the registrants has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date:   November 2, 2023	THE SOUTHERN COMPANY
	By	/s/David P. Poroch
		David P. Poroch Comptroller
	ALABAMA POWER COMPANY GEORGIA POWER COMPANY MISSISSIPPI POWER COMPANY SOUTHERN POWER COMPANY SOUTHERN COMPANY GAS
	By	/s/Melissa K. Caen
		Melissa K. Caen Assistant Secretary

3

EX-99.01

		Exhibit 99.01
News
Media Contact:	Southern Company Media Relations
	404-506-5333 or 1-866-506-5333
	www.southerncompany.com
Investor Relations Contact:
	Scott Gammill
	404-506-0901
	sagammil@southernco.com
		November 2, 2023

Southern Company reports third-quarter 2023 earnings

ATLANTA – Southern Company today reported third-quarter earnings of $1.4 billion, or $1.30 per share, in 2023 compared with earnings of $1.5 billion, or $1.36 per share, in the third quarter of 2022. For the nine months ended September 30, 2023, Southern Company reported earnings of $3.1 billion, or $2.86 per share, compared with $3.6 billion, or $3.38 per share, for the same period in 2022.

Excludingthe items described under “Net Income – Excluding Items” in the table below, Southern Company earned $1.5 billion, or $1.42 per share, during the third quarter of 2023, compared with $1.4 billion, or $1.31 per share, during the third quarter of 2022. For the nine months ended September 30, 2023, excluding these items, Southern Company earned $3.3 billion, or $3.01 per share, compared with $3.6 billion, or $3.35 per share, for the same period in 2022.

Non-GAAP Financial Measures	Three Months Ended September				Year-to-Date September
Net Income - Excluding Items (in millions)	2023		2022		2023		2022
Net Income - As Reported	$	1,422	$	1,472	$	3,121	$	3,611
Less:
Estimated Loss on Plants Under Construction	(166)		62		(171)		7
Tax Impact	42		(16)		43		(2)
Acquisition and Disposition Impacts	(2)		14		(2)		19
Tax Impact	1		—		1		(2)
Loss on Extinguishment of Debt	—		—		(5)		—
Tax Impact	—		—		1		—
Estimated Loss on Qualifying Infrastructure Plant	—		—		(38)		—
Tax Impact	—		—		10		—
Net Income - Excluding Items	$	1,547	$	1,412	$	3,282	$	3,589
Average Shares Outstanding - (in millions)	1,092		1,082		1,092		1,070
Basic Earnings Per Share - Excluding Items	$	1.42	$	1.31	$	3.01	$	3.35

NOTE: For more information regarding these non-GAAP adjustments, see the footnotes accompanying the Financial Highlights page of the earnings package.

Adjusted earnings drivers for the third quarter 2023, as compared with the same period in 2022, were warmer than normal weather at the company’s regulated electric utilities, changes in rates and pricing, and lower income taxes and non-fuel operations and maintenance costs, partially offset by increased depreciation and amortization.

Third-quarter 2023 operating revenues were $7.0 billion, compared with $8.4 billion for the third quarter of 2022, a decrease of 16.7 percent. For the nine months ended September 30, 2023, operating revenues were $19.2 billion, compared with $22.2 billion for the corresponding period in 2022, a decrease of 13.6 percent. These decreases were primarily due to lower fuel costs in 2023.

“Our premier state-regulated electric and gas utilities continued to perform well during the third quarter, and Southern Power made strategic additions to its portfolio of renewable generation assets,” said President and CEO Christopher C. Womack.

“It is also significant to note that the accelerated economic development we have seen in the Southeast over the last couple of years has contributed to a projected growth in electricity usage that is significantly larger than historic levels,” added Womack. “For example, Georgia Power has filed an updated Integrated Resource Plan with the Georgia Public Service Commission, proposing additional investment in our region’s energy future to provide energy solutions that are expected to benefit Georgia customers and communities for generations to come.”

Southern Company’s third-quarter earnings slides with supplemental financial information are available at http://investor.southerncompany.com.

Southern Company’s financial analyst call will begin at 1 p.m. Eastern Time today, during which Womack and Chief Financial Officer Daniel S. Tucker will discuss earnings and provide a general business update. Investors, media and the public may listen to a live webcast of the call and view associated slides at http://investor.southerncompany.com. A replay of the webcast will be available on the site for 12 months.

About Southern Company

Southern Company (NYSE: SO) is a leading energy provider serving 9 million customers across the Southeast and beyond through its family of companies. Providing clean, safe, reliable and affordable energy with excellent service is our mission. The company has electric operating companies in three states, natural gas distribution companies in four states, a competitive generation company, a leading distributed energy distribution company with national capabilities, a fiber optics network and telecommunications services. Through an industry-leading commitment to innovation, resilience and sustainability, we are taking action to meet customers’ and communities’ needs while advancing our goal of net zero greenhouse gas emissions by 2050. Our uncompromising values ensure we put the needs of those we serve at the center of everything we do and are the key to our sustained success. We are transforming energy into economic, environmental and social progress for tomorrow. Our corporate culture and hiring practices have earned the company national awards and recognition from numerous organizations, including Forbes, The Military Times, DiversityInc, Black Enterprise, J.D. Power, Fortune, Human Rights Campaign and more. To learn more, visit www.southerncompany.com.

Cautionary Note Regarding Forward-Looking Statements:

Certain information contained in this release is forward-looking information based on current expectations and plans that involve risks and uncertainties. Forward-looking information includes, among other things, projected growth in electricity usage and expected benefits of Georgia Power’s updated Integrated Resource Plan. Southern Company cautions that there are certain factors that can cause actual results to differ materially from the forward-looking information that has been provided. The reader is cautioned not to put undue reliance on this forward-looking information, which is not a guarantee of future performance and is subject to a number of uncertainties and other factors, many of which are outside the control of

Southern Company; accordingly, there can be no assurance that such suggested results will be realized. The following factors, in addition to those discussed in Southern Company’s Annual Report on Form 10-K for the year ended December 31, 2022 and subsequent securities filings, could cause actual results to differ materially from management expectations as suggested by such forward-looking information: the impact of recent and future federal and state 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 and regulations; the extent and timing of costs and legal requirements related to coal combustion residuals; current and future litigation or regulatory investigations, proceedings, or inquiries; 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; 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; legal proceedings and regulatory approvals and actions related to past and ongoing construction projects; the ability to construct facilities in accordance with the requirements of permits and licenses (including satisfaction of U.S. Nuclear Regulatory Commission requirements), 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; advances in technology, including the pace and extent of development of low- to no-carbon energy and battery energy storage technologies and negative carbon concepts; state and federal rate regulations and the impact of pending and future rate cases and negotiations, including rate actions relating to return on equity, equity ratios, additional generating capacity, and fuel and other cost recovery mechanisms; the ability to successfully operate the electric utilities' generation, transmission, and distribution facilities and the successful performance of necessary corporate functions; the inherent risks involved in operating and constructing nuclear generating facilities; the inherent risks involved in transporting and storing natural gas; 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 recession, inflation, interest rate fluctuations and financial market conditions, and the results of financing efforts; access to capital markets and other financing sources; catastrophic events such as fires, earthquakes, explosions, floods, tornadoes, hurricanes and other storms, droughts, pandemic health events, political unrest, wars or other similar occurrences; the potential effects of COVID-19; and 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. Southern Company expressly disclaims any obligation to update any forward-looking information.

###

EX-99.02

Exhibit 99.02
Page 1
Southern Company
Financial Highlights
(In Millions of Dollars Except Earnings Per Share)
	Three Months Ended September				Year-To-Date September
Net Income–As Reported (See Notes)	2023		2022		2023		2022
Traditional Electric Operating Companies	$	1,419	$	1,445	$	2,852	$	3,256
Southern Power	100		95		288		265
Southern Company Gas	82		83		475		516
Total	1,601		1,623		3,615		4,037
Parent Company and Other	(179)		(151)		(494)		(426)
Net Income–As Reported	$	1,422	$	1,472	$	3,121	$	3,611
Basic Earnings Per Share1	$	1.30	$	1.36	$	2.86	$	3.38
Average Shares Outstanding (in millions)	1,092		1,082		1,092		1,070
End of Period Shares Outstanding (in millions)					1,091		1,089
Non-GAAP Financial Measures	Three Months Ended September				Year-To-Date September
Net Income–Excluding Items (See Notes)	2023		2022		2023		2022
Net Income–As Reported	$	1,422	$	1,472	$	3,121	$	3,611
Less:
Estimated Loss on Plants Under Construction2	(166)		62		(171)		7
Tax Impact	42		(16)		43		(2)
Acquisition and Disposition Impacts3	(2)		14		(2)		19
Tax Impact	1		—		1		(2)
Loss on Extinguishment of Debt4	—		—		(5)		—
Tax Impact	—		—		1		—
Estimated Loss on Qualifying Infrastructure Plant5	—		—		(38)		—
Tax Impact	—		—		10		—
Net Income–Excluding Items	$	1,547	$	1,412	$	3,282	$	3,589
Basic Earnings Per Share–Excluding Items	$	1.42	$	1.31	$	3.01	$	3.35
- See Notes on the following page.

Exhibit 99.02

Page 2

Southern Company

Financial Highlights

Notes

(1)Dilution is not material in any period presented. Diluted earnings per share was $1.29 and $2.84 for the three and nine months ended September 30, 2023, respectively, and was $1.35 and $3.36 for the three and nine months ended September 30, 2022, respectively.

(2)Earnings for the three and nine months ended September 30, 2023 include a charge of $160 million pre tax ($120 million after tax), and earnings for the three and nine months ended September 30, 2022 include a net credit of $70 million pre tax ($52 million after tax) and $18 million pre tax ($13 million after tax), respectively, for estimated probable losses on Georgia Power Company's construction of Plant Vogtle Units 3 and 4. Further charges may occur; however, the amount and timing of any such charges are uncertain. Earnings for the three and nine months ended September 30, 2023 and 2022 also include charges (net of salvage proceeds), associated legal expenses (net of insurance recoveries), and tax impacts related to Mississippi Power Company's integrated coal gasification combined cycle facility project in Kemper County, Mississippi. Mississippi Power Company expects to incur additional pre-tax period costs to complete dismantlement of the abandoned gasifier-related assets and site restoration activities, including related costs for compliance and safety, asset retirement obligation accretion, and property taxes, net of salvage, totaling approximately $15 million annually through 2025.

(3)Earnings for the three and nine months ended September 30, 2022 include a $14 million pre-tax ($11 million after-tax) gain as a result of the early termination of the transition services agreement related to the 2019 sale of Gulf Power. Further impacts may result from future acquisition and disposition activities; however, the amount and timing of any such impacts are uncertain.

(4)Earnings for the nine months ended September 30, 2023 include costs associated with the extinguishment of debt at Southern Company. Similar transaction costs may occur in the future at Southern Company or one of its unregulated subsidiaries; however, the amount and timing of any such costs are uncertain.

(5)Earnings for the nine months ended September 30, 2023 include a charge of $38 million pre tax ($28 million after tax) for an estimated loss at Southern Company Gas associated with an Illinois Commerce Commission disallowance related to its review of the Qualifying Infrastructure Plant (QIP) capital investments by Nicor Gas for calendar year 2019 under the QIP Rider, or Investing in Illinois, program. Further charges may occur; however, the amount and timing of any such charges are uncertain.

EX-99.03

Exhibit 99.03
Page 1
Southern Company
Significant Factors Impacting EPS
	Three Months Ended September						Year-To-Date September
	2023		2022		Change		2023		2022		Change
Earnings Per Share–
As Reported1 (See Notes)	$	1.30	$	1.36	$	(0.06)	$	2.86	$	3.38	$	(0.52)
Significant Factors:
Traditional Electric Operating Companies					$	(0.02)					$	(0.38)
Southern Power					—						0.02
Southern Company Gas					—						(0.04)
Parent Company and Other					(0.03)						(0.06)
Increase in Shares					(0.01)						(0.06)
Total–As Reported					$	(0.06)					$	(0.52)
	Three Months Ended September						Year-To-Date September
Non-GAAP Financial Measures	2023		2022		Change		2023		2022		Change
Earnings Per Share–
Excluding Items (See Notes)	$	1.42	$	1.31	$	0.11	$	3.01	$	3.35	$	(0.34)
Total–As Reported					$	(0.06)					$	(0.52)
Less:
Estimated Loss on Plants Under Construction2					(0.16)						(0.13)
Acquisition and Disposition Impacts3					(0.01)						(0.02)
Loss on Extinguishment of Debt4					—						—
Estimated Loss on Qualifying Infrastructure Plant5					—						(0.03)
Total–Excluding Items					$	0.11					$	(0.34)
- See Notes on the following page.

Exhibit 99.03

Page 2

Southern Company

Significant Factors Impacting EPS

Notes

(1)Dilution is not material in any period presented. Diluted earnings per share was $1.29 and $2.84 for the three and nine months ended September 30, 2023, respectively, and was $1.35 and $3.36 for the three and nine months ended September 30, 2022, respectively.

(2)Earnings for the three and nine months ended September 30, 2023 include a charge of $160 million pre tax ($120 million after tax), and earnings for the three and nine months ended September 30, 2022 include a net credit of $70 million pre tax ($52 million after tax) and $18 million pre tax ($13 million after tax), respectively, for estimated probable losses on Georgia Power Company's construction of Plant Vogtle Units 3 and 4. Further charges may occur; however, the amount and timing of any such charges are uncertain. Earnings for the three and nine months ended September 30, 2023 and 2022 also include charges (net of salvage proceeds), associated legal expenses (net of insurance recoveries), and tax impacts related to Mississippi Power Company's integrated coal gasification combined cycle facility project in Kemper County, Mississippi. Mississippi Power Company expects to incur additional pre-tax period costs to complete dismantlement of the abandoned gasifier-related assets and site restoration activities, including related costs for compliance and safety, asset retirement obligation accretion, and property taxes, net of salvage, totaling approximately $15 million annually through 2025.

(3)Earnings for the three and nine months ended September 30, 2022 include a $14 million pre-tax ($11 million after-tax) gain as a result of the early termination of the transition services agreement related to the 2019 sale of Gulf Power. Further impacts may result from future acquisition and disposition activities; however, the amount and timing of any such impacts are uncertain.

(4)Earnings for the nine months ended September 30, 2023 include costs associated with the extinguishment of debt at Southern Company. Similar transaction costs may occur in the future at Southern Company or one of its unregulated subsidiaries; however, the amount and timing of any such costs are uncertain.

(5)Earnings for the nine months ended September 30, 2023 include a charge of $38 million pre tax ($28 million after tax) for an estimated loss at Southern Company Gas associated with an Illinois Commerce Commission disallowance related to its review of the Qualifying Infrastructure Plant (QIP) capital investments by Nicor Gas for calendar year 2019 under the QIP Rider, or Investing in Illinois, program. Further charges may occur; however, the amount and timing of any such charges are uncertain.

EX-99.04

Exhibit 99.04
Page 1
Southern Company
EPS Earnings Analysis
Description	Three Months Ended September 2023 vs. 2022	Year-To-Date September 2023 vs. 2022
Retail Sales	(2)¢	(3)¢
Retail Revenue Impacts	5	4
Weather	9	(14)
Wholesale & Other Operating Revenues	3	9
Non-Fuel O&M(*)	7	15
Depreciation and Amortization	(15)	(44)
Interest Expense and Other	(1)	(7)
Income Taxes	7	15
Total Traditional Electric Operating Companies	13¢	(25)¢
Southern Power	—	2
Southern Company Gas	—	—
Parent Company and Other	(1)	(5)
Increase in Shares	(1)	(6)
Total Change in EPS (Excluding Items)	11¢	(34)¢
Estimated Loss on Plants Under Construction1	(16)	(13)
Acquisition and Disposition Impacts2	(1)	(2)
Loss on Extinguishment of Debt3	—	—
Estimated Loss on Qualifying Infrastructure Plant4	—	(3)
Total Change in EPS (As Reported)	(6)¢	(52)¢
(*) Includes non-service cost-related benefits income.
- See additional Notes on the following page.

Exhibit 99.04

Page 2

Southern Company

EPS Earnings Analysis

Notes

(1)Earnings for the three and nine months ended September 30, 2023 include a charge of $160 million pre tax ($120 million after tax), and earnings for the three and nine months ended September 30, 2022 include a net credit of $70 million pre tax ($52 million after tax) and $18 million pre tax ($13 million after tax), respectively, for estimated probable losses on Georgia Power Company's construction of Plant Vogtle Units 3 and 4. Further charges may occur; however, the amount and timing of any such charges are uncertain. Earnings for the three and nine months ended September 30, 2023 and 2022 also include charges (net of salvage proceeds), associated legal expenses (net of insurance recoveries), and tax impacts related to Mississippi Power Company's integrated coal gasification combined cycle facility project in Kemper County, Mississippi. Mississippi Power Company expects to incur additional pre-tax period costs to complete dismantlement of the abandoned gasifier-related assets and site restoration activities, including related costs for compliance and safety, asset retirement obligation accretion, and property taxes, net of salvage, totaling approximately $15 million annually through 2025.

(2)Earnings for the three and nine months ended September 30, 2022 include a $14 million pre-tax ($11 million after-tax) gain as a result of the early termination of the transition services agreement related to the 2019 sale of Gulf Power. Further impacts may result from future acquisition and disposition activities; however, the amount and timing of any such impacts are uncertain.

(3)Earnings for the nine months ended September 30, 2023 include costs associated with the extinguishment of debt at Southern Company. Similar transaction costs may occur in the future at Southern Company or one of its unregulated subsidiaries; however, the amount and timing of any such costs are uncertain.

(4)Earnings for the nine months ended September 30, 2023 include a charge of $38 million pre tax ($28 million after tax) for an estimated loss at Southern Company Gas associated with an Illinois Commerce Commission disallowance related to its review of the Qualifying Infrastructure Plant (QIP) capital investments by Nicor Gas for calendar year 2019 under the QIP Rider, or Investing in Illinois, program. Further charges may occur; however, the amount and timing of any such charges are uncertain.

EX-99.05

Exhibit 99.05
Southern Company
Consolidated Earnings
As Reported
(In Millions of Dollars)
	Three Months Ended September						Year-To-Date September
	2023		2022		Change		2023		2022		Change
Retail Electric Revenues-
Fuel	$	1,356	$	2,320	$	(964)	$	3,412	$	4,942	$	(1,530)
Non-Fuel	3,783		3,641		142		9,185		9,421		(236)
Wholesale Electric Revenues	727		1,197		(470)		1,930		2,798		(868)
Other Electric Revenues	203		185		18		602		554		48
Natural Gas Revenues	689		857		(168)		3,417		3,998		(581)
Other Revenues	222		178		44		662		519		143
Total Operating Revenues	6,980		8,378		(1,398)		19,208		22,232		(3,024)
Fuel and Purchased Power	1,574		3,068		(1,494)		4,056		6,534		(2,478)
Cost of Natural Gas	102		294		(192)		1,199		1,840		(641)
Cost of Other Sales	126		92		34		381		275		106
Non-Fuel O&M	1,424		1,527		(103)		4,352		4,568		(216)
Depreciation and Amortization	1,143		922		221		3,365		2,728		637
Taxes Other Than Income Taxes	341		352		(11)		1,076		1,073		3
Estimated Loss on Plant Vogtle Units 3 and 4	160		(70)		230		160		(18)		178
Total Operating Expenses	4,870		6,185		(1,315)		14,589		17,000		(2,411)
Operating Income	2,110		2,193		(83)		4,619		5,232		(613)
Allowance for Equity Funds Used During Construction	66		59		7		200		163		37
Earnings from Equity Method Investments	32		28		4		110		109		1
Interest Expense, Net of Amounts Capitalized	620		511		109		1,812		1,461		351
Other Income (Expense), net	141		132		9		428		414		14
Income Taxes	297		414		(117)		492		891		(399)
Net Income	1,432		1,487		(55)		3,053		3,566		(513)
Dividends on Preferred Stock of Subsidiaries	—		3		(3)		—		10		(10)
Net Income (Loss) Attributable to Noncontrolling Interests	10		12		(2)		(68)		(55)		(13)
NET INCOME ATTRIBUTABLE TO SOUTHERN COMPANY	$	1,422	$	1,472	$	(50)	$	3,121	$	3,611	$	(490)

Notes

- Certain prior year data may have been reclassified to conform with current year presentation.

EX-99.06

Exhibit 99.06
Southern Company
Kilowatt-Hour Sales and Customers
(In Millions of KWHs)
	Three Months Ended September						Year-To-Date September
	2023	2022	Change		Weather Adjusted Change		2023	2022	Change		Weather Adjusted Change
Kilowatt-Hour Sales-
Total Sales	55,428	56,606	(2.1)	%			150,157	156,874	(4.3)	%
Total Retail Sales-	42,364	41,490	2.1	%	(0.9)	%	110,715	113,716	(2.6)	%	(0.4)	%
Residential	15,133	14,467	4.6	%	(1.8)	%	36,458	38,632	(5.6)	%	(0.4)	%
Commercial	14,341	13,827	3.7	%	1.3	%	37,050	37,060	—	%	1.3	%
Industrial	12,751	13,048	(2.3)	%	(2.3)	%	36,791	37,575	(2.1)	%	(2.1)	%
Other	139	148	(6.1)	%	(6.5)	%	416	449	(7.5)	%	(7.1)	%
Total Wholesale Sales	13,064	15,116	(13.6)	%	N/A		39,442	43,158	(8.6)	%	N/A
(In Thousands of Customers)
							Period Ended September
							2023	2022	Change
Regulated Utility Customers-
Total Utility Customers-							8,792	8,722	0.8%
Total Traditional Electric							4,476	4,422	1.2%
Southern Company Gas							4,316	4,300	0.4%

EX-99.07

Exhibit 99.07
Southern Company
Financial Overview
As Reported
(In Millions of Dollars)
	Three Months Ended September						Year-To-Date September
	2023		2022		% Change		2023		2022		% Change
Southern Company –
Operating Revenues	$	6,980	$	8,378	(16.7)	%	$	19,208	$	22,232	(13.6)	%
Earnings Before Income Taxes	1,729		1,901		(9.0)	%	3,545		4,457		(20.5)	%
Net Income Available to Common	1,422		1,472		(3.4)	%	3,121		3,611		(13.6)	%
Alabama Power –
Operating Revenues	$	2,083	$	2,444	(14.8)	%	$	5,420	$	6,023	(10.0)	%
Earnings Before Income Taxes	644		694		(7.2)	%	1,235		1,660		(25.6)	%
Net Income Available to Common	565		525		7.6	%	1,132		1,256		(9.9)	%
Georgia Power –
Operating Revenues	$	3,237	$	3,889	(16.8)	%	$	7,805	$	9,218	(15.3)	%
Earnings Before Income Taxes	980		1,084		(9.6)	%	1,892		2,272		(16.7)	%
Net Income Available to Common	780		858		(9.1)	%	1,547		1,851		(16.4)	%
Mississippi Power –
Operating Revenues	$	436	$	510	(14.5)	%	$	1,137	$	1,279	(11.1)	%
Earnings Before Income Taxes	93		79		17.7	%	208		188		10.6	%
Net Income Available to Common	75		62		21.0	%	173		150		15.3	%
Southern Power –
Operating Revenues	$	653	$	1,180	(44.7)	%	$	1,686	$	2,618	(35.6)	%
Earnings Before Income Taxes	149		143		4.2	%	258		259		(0.4)	%
Net Income Available to Common	100		95		5.3	%	288		265		8.7	%
Southern Company Gas –
Operating Revenues	$	689	$	857	(19.6)	%	$	3,417	$	3,998	(14.5)	%
Earnings Before Income Taxes	110		110		—	%	635		677		(6.2)	%
Net Income Available to Common	82		83		(1.2)	%	475		516		(7.9)	%

Notes

- See Financial Highlights pages for discussion of certain significant items occurring during the periods.

XML

Cover Page Document	Nov. 02, 2023
Document Information [Line Items]
Document Type	8-K
Document Period End Date	Nov. 02, 2023
Entity File Number	1-3526
Entity Registrant Name	The Southern Company
Entity Tax Identification Number	58-0690070
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	30 Ivan Allen Jr. Boulevard, N.W
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30308
City Area Code	404
Local Phone Number	506-5000
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Entity Central Index Key	0000092122
Amendment Flag	false
Common Stock, par value $5 per share
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $5 per share
Trading Symbol	SO
Security Exchange Name	NYSE
Series 2017B 5.25% Junior Subordinated Notes due 2077
Document Information [Line Items]
Title of 12(b) Security	Series 2017B 5.25% Junior Subordinated Notes due 2077
Trading Symbol	SOJC
Security Exchange Name	NYSE
Series 2020A 4.95% Junior Subordinated Notes Due 2080 [Member]
Document Information [Line Items]
Title of 12(b) Security	Series 2020A 4.95% Junior Subordinated Notes due 2080
Trading Symbol	SOJD
Security Exchange Name	NYSE
Series 2020C 4.20% Junior Subordinated Notes due 2060
Document Information [Line Items]
Title of 12(b) Security	Series 2020C 4.20% Junior Subordinated Notes due 2060
Trading Symbol	SOJE
Security Exchange Name	NYSE
Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081
Document Information [Line Items]
Title of 12(b) Security	Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081
Trading Symbol	SO 81
Security Exchange Name	NYSE
Alabama Power Company
Document Information [Line Items]
Entity File Number	1-3164
Entity Registrant Name	Alabama Power Company
Entity Tax Identification Number	63-0004250
Entity Incorporation, State or Country Code	AL
Entity Address, Address Line One	600 North 18th Street
Entity Address, City or Town	Birmingham
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35203
City Area Code	205
Local Phone Number	257-1000
Entity Emerging Growth Company	false
Entity Central Index Key	0000003153
Georgia Power Company
Document Information [Line Items]
Entity File Number	1-6468
Entity Registrant Name	Georgia Power Company
Entity Tax Identification Number	58-0257110
Entity Incorporation, State or Country Code	GA
Entity Address, Address Line One	241 Ralph McGill Boulevard, N.E.
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30308
City Area Code	404
Local Phone Number	506-6526
Entity Emerging Growth Company	false
Entity Central Index Key	0000041091
Georgia Power Company | Series 2017A 5.00% Junior Subordinated Notes due 2077
Document Information [Line Items]
Title of 12(b) Security	Series 2017A 5.00% Junior Subordinated Notes due 2077
Trading Symbol	GPJA
Security Exchange Name	NYSE
Mississippi Power Company
Document Information [Line Items]
Entity File Number	001-11229
Entity Registrant Name	Mississippi Power Company
Entity Tax Identification Number	64-0205820
Entity Incorporation, State or Country Code	MS
Entity Address, Address Line One	2992 West Beach Boulevard
Entity Address, City or Town	Gulfport
Entity Address, State or Province	MS
Entity Address, Postal Zip Code	39501
City Area Code	228
Local Phone Number	864-1211
Entity Emerging Growth Company	false
Entity Central Index Key	0000066904
Southern Power Company
Document Information [Line Items]
Entity File Number	001-37803
Entity Registrant Name	Southern Power Company
Entity Tax Identification Number	58-2598670
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	30 Ivan Allen Jr. Boulevard, N.W.
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30308
City Area Code	404
Local Phone Number	506-5000
Entity Emerging Growth Company	false
Entity Central Index Key	0001160661
Southern Power Company | Series 2016B 1.850% Senior Notes Due 2026 [Member]
Document Information [Line Items]
Title of 12(b) Security	Series 2016B 1.850% Senior Notes due 2026
Trading Symbol	SO/26A
Security Exchange Name	NYSE
Southern Company Gas
Document Information [Line Items]
Entity File Number	1-14174
Entity Registrant Name	Southern Company Gas
Entity Tax Identification Number	58-2210952
Entity Incorporation, State or Country Code	GA
Entity Address, Address Line One	Ten Peachtree Place, N.E.
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30309
City Area Code	404
Local Phone Number	584-4000
Entity Emerging Growth Company	false
Entity Central Index Key	0001004155