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Southern Co (SO) SEC Filing 10-K Annual Report for the fiscal year ending Friday, December 31, 2021

SEC Filings

SO Annual Reports

Southern Co

CIK: 92122 Ticker: SO
Cover Page - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2021
Jan. 31, 2022
Jun. 30, 2021
Document Information [Line Items]   
Document Type10-K  
Document Annual Reporttrue  
Document Period End DateDec. 31, 2021  
Current Fiscal Year End Date--12-31  
Document Transition Reportfalse  
Entity File Number1-3526  
Entity Registrant NameThe Southern Company  
Entity Tax Identification Number58-0690070  
Entity Incorporation, State or Country CodeDE  
Entity Address, Address Line One30 Ivan Allen Jr. Boulevard, N.W.  
Entity Address, City or TownAtlanta  
Entity Address, State or ProvinceGA  
Entity Address, Postal Zip Code30308  
City Area Code404  
Local Phone Number506-5000  
Entity Well-known Seasoned IssuerYes  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryLarge Accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagtrue  
Entity Shell Companyfalse  
Entity Public Float  $ 64.1
Entity Common Stock, Shares Outstanding (in shares) 1,060,226,587 
Documents Incorporated by Reference
Documents incorporated by reference: specified portions of The Southern Company's Definitive Proxy Statement on Schedule 14A relating to the 2022 Annual Meeting of Stockholders are incorporated by reference into PART III. In addition, specified portions of Alabama Power Company's Definitive Proxy Statement on Schedule 14A relating to its 2022 Annual Meeting of Shareholders are incorporated by reference into PART III.
Each of Georgia Power Company, Mississippi Power Company, Southern Power Company, and Southern Company Gas meets the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and is therefore filing this Form 10-K with the reduced disclosure format specified in General Instructions I(2)(b), (c), and (d) of Form 10-K.
This combined Form 10-K 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.
  
Entity Central Index Key0000092122  
Amendment Flagfalse  
Document Fiscal Year Focus2021  
Document Fiscal Period FocusFY  
Common Stock, par value $5 per share   
Document Information [Line Items]   
Title of 12(b) SecurityCommon Stock, par value $5 per share  
Trading SymbolSO  
Security Exchange NameNYSE  
Series 2017B 5.25% Junior Subordinated Notes due 2077   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2017B 5.25% Junior Subordinated Notes due 2077  
Trading SymbolSOJC  
Security Exchange NameNYSE  
2019 Series A Corporate Units   
Document Information [Line Items]   
Title of 12(b) Security2019 Series A Corporate Units  
Trading SymbolSOLN  
Security Exchange NameNYSE  
Series 2020A 4.95% Junior Subordinated Notes due 2080   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2020A 4.95% Junior Subordinated Notes due 2080  
Trading SymbolSOJD  
Security Exchange NameNYSE  
Series 2020C 4.20% Junior Subordinated Notes due 2060   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2020C 4.20% Junior Subordinated Notes due 2060  
Trading SymbolSOJE  
Security Exchange NameNYSE  
Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081  
Trading SymbolSO 81  
Security Exchange NameNYSE  
Alabama Power   
Document Information [Line Items]   
Entity File Number1-3164  
Entity Registrant NameAlabama Power Company  
Entity Tax Identification Number63-0004250  
Entity Incorporation, State or Country CodeAL  
Entity Address, Address Line One600 North 18th Street  
Entity Address, City or TownBirmingham  
Entity Address, State or ProvinceAL  
Entity Address, Postal Zip Code35203  
City Area Code205  
Local Phone Number257-1000  
Entity Well-known Seasoned IssuerYes  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryNon-accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagfalse  
Entity Shell Companyfalse  
Entity Common Stock, Shares Outstanding (in shares) 30,537,500 
Entity Central Index Key0000003153  
Alabama Power | 5.00% Series Class A Preferred Stock   
Document Information [Line Items]   
Title of 12(b) Security5.00% Series Class A Preferred Stock  
Trading SymbolALP PR Q  
Security Exchange NameNYSE  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.20% Series   
Document Information [Line Items]   
Title of 12(g) Security4.20% Series  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.52% Series   
Document Information [Line Items]   
Title of 12(g) Security4.52% Series  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.60% Series   
Document Information [Line Items]   
Title of 12(g) Security4.60% Series  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.64% Series   
Document Information [Line Items]   
Title of 12(g) Security4.64% Series  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.72% Series   
Document Information [Line Items]   
Title of 12(g) Security4.72% Series  
Alabama Power | Preferred Stock, Cumulative, $100 Par Value, 4.92% Series   
Document Information [Line Items]   
Title of 12(g) Security4.92% Series  
Georgia Power   
Document Information [Line Items]   
Entity File Number1-6468  
Entity Registrant NameGeorgia Power Company  
Entity Tax Identification Number58-0257110  
Entity Incorporation, State or Country CodeGA  
Entity Address, Address Line One241 Ralph McGill Boulevard, N.E.  
Entity Address, City or TownAtlanta  
Entity Address, State or ProvinceGA  
Entity Address, Postal Zip Code30308  
City Area Code404  
Local Phone Number506-6526  
Entity Well-known Seasoned IssuerYes  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryNon-accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagfalse  
Entity Shell Companyfalse  
Entity Common Stock, Shares Outstanding (in shares) 9,261,500 
Entity Central Index Key0000041091  
Georgia Power | Series 2017A 5.00% Junior Subordinated Notes due 2077   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2017A 5.00% Junior Subordinated Notes due 2077  
Trading SymbolGPJA  
Security Exchange NameNYSE  
Mississippi Power   
Document Information [Line Items]   
Entity File Number001-11229  
Entity Registrant NameMississippi Power Company  
Entity Tax Identification Number64-0205820  
Entity Incorporation, State or Country CodeMS  
Entity Address, Address Line One2992 West Beach Boulevard  
Entity Address, City or TownGulfport  
Entity Address, State or ProvinceMS  
Entity Address, Postal Zip Code39501  
City Area Code228  
Local Phone Number864-1211  
Entity Well-known Seasoned IssuerNo  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryNon-accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagfalse  
Entity Shell Companyfalse  
Entity Common Stock, Shares Outstanding (in shares) 1,121,000 
Entity Central Index Key0000066904  
Southern Power   
Document Information [Line Items]   
Entity File Number001-37803  
Entity Registrant NameSouthern Power Company  
Entity Tax Identification Number58-2598670  
Entity Incorporation, State or Country CodeDE  
Entity Address, Address Line One30 Ivan Allen Jr. Boulevard, N.W.  
Entity Address, City or TownAtlanta  
Entity Address, State or ProvinceGA  
Entity Address, Postal Zip Code30308  
City Area Code404  
Local Phone Number506-5000  
Entity Well-known Seasoned IssuerNo  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryNon-accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagfalse  
Entity Shell Companyfalse  
Entity Common Stock, Shares Outstanding (in shares) 1,000 
Entity Central Index Key0001160661  
Southern Power | Series 2016A 1.000% Senior Notes due 2022   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2016A 1.000% Senior Notes due 2022  
Trading SymbolSO/22B  
Security Exchange NameNYSE  
Southern Power | Series 2016B 1.850% Senior Notes due 2026   
Document Information [Line Items]   
Title of 12(b) SecuritySeries 2016B 1.850% Senior Notes due 2026  
Trading SymbolSO/26A  
Security Exchange NameNYSE  
Southern Company Gas   
Document Information [Line Items]   
Entity File Number1-14174  
Entity Registrant NameSouthern Company Gas  
Entity Tax Identification Number58-2210952  
Entity Incorporation, State or Country CodeGA  
Entity Address, Address Line OneTen Peachtree Place, N.E.  
Entity Address, City or TownAtlanta  
Entity Address, State or ProvinceGA  
Entity Address, Postal Zip Code30309  
City Area Code404  
Local Phone Number584-4000  
Entity Well-known Seasoned IssuerNo  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Interactive Data CurrentYes  
Entity Filer CategoryNon-accelerated Filer  
Entity Small Businessfalse  
Entity Emerging Growth Companyfalse  
ICFR Auditor Attestation Flagfalse  
Entity Shell Companyfalse  
Entity Common Stock, Shares Outstanding (in shares) 100 
Entity Central Index Key0001004155  

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Assess how Southern Co's management team is paid from their Annual Proxy

Definitive Proxy Statement (Form DEF 14A)
Screenshot example of actual Proxy Statement

Southern Co's Definitive Proxy Statement (Form DEF 14A) filed after their 2022 10-K Annual Report includes:

  • Voting Procedures
  • Board Members
  • Executive Team
  • Salaries, Bonuses, Perks
  • Peers / Competitors

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SEC Filing Tools

Financial Statements, Disclosures and Schedules

Inside this 10-K Annual Report

Audit Information
Cover Page
Balance Sheets - Apc
Balance Sheets - Apc (Parenthetical)
Balance Sheets - Gpc
Balance Sheets - Gpc (Parenthetical)
Balance Sheets - Mpc
Balance Sheets - Mpc (Parenthetical)
Consolidated Balance Sheets - Gas
Consolidated Balance Sheets - Gas (Parenthetical)
Consolidated Balance Sheets - Southern
Consolidated Balance Sheets - Southern (Parenthetical)
Consolidated Balance Sheets - Spc
Consolidated Balance Sheets - Spc (Parenthetical)
Consolidated Statements Of Cash Flows - Gas
Consolidated Statements Of Cash Flows - Gas (Parenthetical)
Consolidated Statements Of Cash Flows - Southern
Consolidated Statements Of Cash Flows - Southern (Parenthetical)
Consolidated Statements Of Cash Flows - Spc
Consolidated Statements Of Cash Flows - Spc (Parenthetical)
Consolidated Statements Of Common Stockholders' Equity - Gas
Consolidated Statements Of Comprehensive Income - Gas
Consolidated Statements Of Comprehensive Income - Gas (Parenthetical)
Consolidated Statements Of Comprehensive Income - Southern
Consolidated Statements Of Comprehensive Income - Southern (Parenthetical)
Consolidated Statements Of Comprehensive Income - Spc
Consolidated Statements Of Comprehensive Income - Spc (Parenthetical)
Consolidated Statements Of Income
Consolidated Statements Of Income - Gas
Consolidated Statements Of Income - Gas (Parenthetical)
Consolidated Statements Of Income - Southern
Consolidated Statements Of Stockholders' Equity - Southern
Consolidated Statements Of Stockholders' Equity - Southern (Parenthetical)
Consolidated Statements Of Stockholders' Equity - Spc
Statements Of Cash Flows - Apc
Statements Of Cash Flows - Apc (Parenthetical)
Statements Of Cash Flows - Gpc
Statements Of Cash Flows - Gpc (Parenthetical)
Statements Of Cash Flows - Mpc
Statements Of Cash Flows - Mpc (Parenthetical)
Statements Of Common Stockholders' Equity - Mpc
Statements Of Comprehensive Income (Loss) - Apc
Statements Of Comprehensive Income (Loss) - Apc (Parenthetical)
Statements Of Comprehensive Income (Loss) - Gpc
Statements Of Comprehensive Income (Loss) - Gpc (Parenthetical)
Statements Of Comprehensive Income - Mpc
Statements Of Comprehensive Income - Mpc (Parenthetical)
Statements Of Income - Apc
Statements Of Income - Gpc
Statements Of Income - Mpc
Statements Of Stockholders' Equity - Apc
Statements Of Stockholders' Equity - Gpc
Acquisitions And Dispositions
Acquisitions And Dispositions (Tables)
Acquisitions And Dispositions - Alabama Power Narrative (Details)
Acquisitions And Dispositions - Gas Acquisitions And Dispositions Narrative (Details)
Acquisitions And Dispositions - Schedule Of Asset Acquisitions (Details)
Acquisitions And Dispositions - Schedule Of Construction Projects (Details)
Acquisitions And Dispositions - Schedule Of Pre-Tax Income (Details)
Acquisitions And Dispositions - Southern Company Narrative (Details)
Acquisitions And Dispositions - Southern Power Narrative (Details)
Asset Retirement Obligations
Asset Retirement Obligations (Tables)
Asset Retirement Obligations - Accumulated Provisions For The External Decommissioning Trust Funds (Details)
Asset Retirement Obligations - Details Of Aros Included In The Balance Sheets (Details)
Asset Retirement Obligations - Estimated Costs Of Decommissioning (Details)
Asset Retirement Obligations - Fair Value Increases (Decreases) Of The Funds (Details)
Asset Retirement Obligations - Investment Securities In The Funds (Details)
Asset Retirement Obligations - Narrative (Details)
Consolidated Entities And Equity Method Investments
Consolidated Entities And Equity Method Investments (Tables)
Consolidated Entities And Equity Method Investments - Balance Sheet Information (Details)
Consolidated Entities And Equity Method Investments - Gas Equity Method Investments Narrative (Details)
Consolidated Entities And Equity Method Investments - Income Statement Information (Details)
Consolidated Entities And Equity Method Investments - Segco Equity Method Investments Narrative (Details)
Consolidated Entities And Equity Method Investments - Spc Noncontrolling Interests And Vies Narrative (Details)
Contingencies, Commitments, And Guarantees
Contingencies, Commitments, And Guarantees (Tables)
Contingencies, Commitments, And Guarantees - Commitments (Details)
Contingencies, Commitments, And Guarantees - Environmental Remediation (Details)
Contingencies, Commitments, And Guarantees - Gas Commitments (Details)
Contingencies, Commitments, And Guarantees - Gpc Litigation (Details)
Contingencies, Commitments, And Guarantees - Guarantees (Details)
Contingencies, Commitments, And Guarantees - Mpc Litigation (Details)
Contingencies, Commitments, And Guarantees - Mpc Other Matters (Details)
Contingencies, Commitments, And Guarantees - Nuclear Fuel Disposal Costs And Nuclear Insurance (Details)
Contingencies, Commitments, And Guarantees - So Litigation (Details)
Derivatives
Derivatives (Tables)
Derivatives - Cumulative Basis Adjustments For Fair Value Hedges (Details)
Derivatives - Derivative Financial Statement Presentation And Amounts With Balance Sheet Offsetting (Details)
Derivatives - Energy-Related Derivative Contracts (Details)
Derivatives - Foreign Currency Derivatives (Details)
Derivatives - Interest Rate Derivatives (Details)
Derivatives - Narrative (Details)
Derivatives - Pre-Tax Effects Of Derivatives Designated As Hedges On Aoci (Details)
Derivatives - Pre-Tax Effects Of Derivatives Designated As Hedges On Income (Details)
Derivatives - Pre-Tax Effects Of Derivatives Not Designated As Hedging (Details)
Derivatives - Schedule Of Unrealized Gain (Loss) Recognized In The Balance Sheet (Details)
Fair Value Measurements
Fair Value Measurements (Tables)
Fair Value Measurements - Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details)
Fair Value Measurements - Fair Value Of Commodity Derivative Contracts That Include A Significant Unobservable Component (Details)
Fair Value Measurements - Financial Instruments, Carrying Amount Not Equal To Fair Value (Details)
Fair Value Measurements - Narrative (Details)
Financing
Financing (Tables)
Financing - Bank Credit Arrangements (Details)
Financing - Bank Credit Arrangements Narrative (Details)
Financing - Diluted Earnings Per Share (Details)
Financing - Dividend Restrictions And Structural Considerations Narrative (Details)
Financing - Doe Loan Guarantee Borrowings (Details)
Financing - Equity Units (Details)
Financing - Long-Term Debt (Details)
Financing - Maturities Of Long-Term Debt (Details)
Financing - Notes Payable (Details)
Financing - Outstanding Classes Of Capital Stock Narrative (Details)
Financing - Preferred Stock Redemption (Details)
Income Taxes
Income Taxes (Tables)
Income Taxes - Amortization Of Deferred Credits (Details)
Income Taxes - Changes In Unrecognized Tax Benefits (Details)
Income Taxes - Current And Deferred Income Tax Provisions (Details)
Income Taxes - Deferred Tax Assets And Liabilities (Details)
Income Taxes - Federal Itc/Ptc Carryforwards (Details)
Income Taxes - Narrative (Details)
Income Taxes - Nol Carryforwards (Details)
Income Taxes - Reconciliation Of Federal Statutory Income Tax Rate (Details)
Leases
Leases (Tables)
Leases - Additional Information (Details)
Leases - Balance Sheet Amounts Recorded For Operating And Financing Leases (Details)
Leases - Lease Costs (Details)
Leases - Lease Income (Details)
Leases - Leveraged Leases (Narrative) (Details)
Leases - Major Categories Of Lease Obligations (Details)
Leases - Maturities Of Lease Liabilities (Details)
Leases - Other Information (Details)
Leases - Schedule Of Net Investment In Domestic And International Leveraged Leases (Details)
Leases - Summary Of The Components Of Income From Leveraged Leases (Details)
Leases - Undiscounted Cash Flows To Be Received Under Ppas Accounted For As Operating Leases (Details)
Leases - Undiscounted Cash Flows To Be Received Under Tolling Arrangements Accounted For As Sales-Type Leases (Details)
Property, Plant, And Equipment
Property, Plant, And Equipment (Tables)
Property, Plant, And Equipment - Additional Information (Narrative) (Details)
Property, Plant, And Equipment - Assets Subject To Lien (Narrative) (Details)
Property, Plant, And Equipment - Composite Straight-Line Rates (Details)
Property, Plant, And Equipment - Deferred Cloud Implementation Costs (Details)
Property, Plant, And Equipment - Depreciation And Amortization (Narrative) (Details)
Property, Plant, And Equipment - Joint Ownership Agreements (Narrative) (Details)
Property, Plant, And Equipment - Ownership And Investment In Jointly-Owned Facilities (Details)
Property, Plant, And Equipment - Property, Plant And Equipment (Details)
Property, Plant, And Equipment - Southern Power Useful Lives (Details)
Regulatory Matters
Regulatory Matters (Tables)
Regulatory Matters - Apc Accounting Orders And Plant Greene County (Details)
Regulatory Matters - Apc Certificate Of Convenience And Necessity And Rgc (Details)
Regulatory Matters - Apc Rate Cnp (Details)
Regulatory Matters - Apc Rate Erc (Details)
Regulatory Matters - Apc Rate Ndr (Details)
Regulatory Matters - Apc Rate Rse (Details)
Regulatory Matters - Gas Infrastructure Replacement Programs And Capital Projects (Details)
Regulatory Matters - Gas Natural Gas Cost Recovery (Details)
Regulatory Matters - Gas Rate Proceedings And Deferral Of Incremental Covid-19 Costs (Details)
Regulatory Matters - Gas Schedule Of Infrastructure Replacement Programs And Capital Projects (Details)
Regulatory Matters - Gas Schedule Of Unrecognized Ratemaking Amounts (Details)
Regulatory Matters - Gas Schedule Of Utility Regulation And Rate Design (Details)
Regulatory Matters - Gpc Fuel Cost And Storm Damage Recovery (Details)
Regulatory Matters - Gpc Joint Ownership Agreements (Details)
Regulatory Matters - Gpc Nuclear Construction (Details)
Regulatory Matters - Gpc Rate Plans, Integrated Resource Plan And Covid-19 Costs (Details)
Regulatory Matters - Gpc Regulatory Matters (Details)
Regulatory Matters - Gpc Schedule Of Nuclear Construction Cost And Schedule (Details)
Regulatory Matters - Gpc Tariffs (Details)
Regulatory Matters - Mpc 2019 Base Rate Case And Performance Evaluation Plan (Details)
Regulatory Matters - Mpc Environmental Compliance Overview Plan (Details)
Regulatory Matters - Mpc Fuel Cost Recovery And Ad Valorem Tax Adjustment (Details)
Regulatory Matters - Mpc Integrated Resource Plan (Details)
Regulatory Matters - Mpc Municipal And Rural Associations Tariff (Details)
Regulatory Matters - Mpc System Restoration Rider (Details)
Regulatory Matters - Schedule Of Regulatory Assets And Liabilities (Details)
Retirement Benefits
Retirement Benefits (Tables)
Retirement Benefits - 401K Plan Matching Contributions (Details)
Retirement Benefits - Accumulated Benefit Obligation (Details)
Retirement Benefits - Actuarial Assumptions (Details)
Retirement Benefits - Amounts Recognized In Balance Sheets And Amounts In Aoci (Details)
Retirement Benefits - Changes In Projected Benefit Obligations And Fair Value Of Plan Assets (Details)
Retirement Benefits - Components Of Accumulated Oci And Changes In Regulatory Assets (Details)
Retirement Benefits - Components Of Net Periodic Benefit Cost And Estimated Future Benefit Payments (Details)
Retirement Benefits - Fair Values Of Pension Plan And Other Postretirement Benefit Plan Assets (Details)
Retirement Benefits - Narrative (Details)
Retirement Benefits - Schedule Of Health Care Cost Trend Rates (Details)
Revenue From Contracts With Customers
Revenue From Contracts With Customers (Tables)
Revenue From Contracts With Customers - Contract Balances (Details)
Revenue From Contracts With Customers - Disaggregate Revenue Sources (Details)
Revenue From Contracts With Customers - Performance Obligations (Details)
Segment And Related Information
Segment And Related Information (Tables)
Segment And Related Information - Electric Utilities' Revenues (Details)
Segment And Related Information - Financial Data For Business Segments (Details)
Segment And Related Information - Gas Revenues (Details)
Segment And Related Information - Narrative (Details)
Stock Compensation
Stock Compensation (Tables)
Stock Compensation - Aggregate Intrinsic Value For Options Exercised (Details)
Stock Compensation - Performance Shares Narrative (Details)
Stock Compensation - Performance Shares, Assumptions Used (Details)
Stock Compensation - Performance Shares, Compensation Costs And Related Tax Benefit (Details)
Stock Compensation - Restricted Stock Units Narrative (Details)
Stock Compensation - Schedule Of Employees Participating In Stock-Based Compensation Programs (Details)
Stock Compensation - Stock Option Activity (Details)
Stock Compensation - Stock Options Narrative (Details)
Summary Of Significant Accounting Policies
Summary Of Significant Accounting Policies (Policies)
Summary Of Significant Accounting Policies (Tables)
Summary Of Significant Accounting Policies - Affiliate Transactions (Narrative) (Details)
Summary Of Significant Accounting Policies - Concentration Of Credit Risk (Narrative) (Details)
Summary Of Significant Accounting Policies - Concentration Of Revenue (Narrative) (Details)
Summary Of Significant Accounting Policies - Financial Instruments (Narrative) (Details)
Summary Of Significant Accounting Policies - General (Narrative) (Details)
Summary Of Significant Accounting Policies - Goodwill And Other Intangible Assets And Liabilities (Narrative) (Details)
Summary Of Significant Accounting Policies - Income And Other Taxes (Narrative) (Details)
Summary Of Significant Accounting Policies - Natural Gas For Sale (Narrative) (Details)
Summary Of Significant Accounting Policies - Provision For Uncollectible Accounts (Narrative) (Details)
Summary Of Significant Accounting Policies - Revenues (Narrative) (Details)
Summary Of Significant Accounting Policies - Schedule Of Amortization Of Other Intangible Assets (Details)
Summary Of Significant Accounting Policies - Schedule Of Aoci (Loss) Balances, Net Of Tax Effects (Details)
Summary Of Significant Accounting Policies - Schedule Of Average Afudc Composite Rates (Details)
Summary Of Significant Accounting Policies - Schedule Of Cash, Cash Equivalents, And Restricted Cash (Details)
Summary Of Significant Accounting Policies - Schedule Of Costs For Affiliate Transactions (Details)
Summary Of Significant Accounting Policies - Schedule Of Goodwill Balances (Details)
Summary Of Significant Accounting Policies - Schedule Of Other Intangible Assets (Details)
Summary Of Significant Accounting Policies - Schedule Of Total Afudc And Interest Capitalized (Details)
Summary Of Significant Accounting Policies - Storm Damage Reserves (Details)
Summary Of Significant Accounting Policies - Transmission Receivables/Prepayments (Narrative) (Details)
Valuation And Qualifying Accounts
Valuation And Qualifying Accounts (Details)

Material Contracts, Statements, Certifications & more

Southern Co provided additional information to their SEC Filing as exhibits

Exhibit 4.A4: Instruments Defining The Rights Of Security Holders, Including Indentures
Exhibit 10.A25: Material Contract
Exhibit 21.A: Subsidaries Of The Registrant
Exhibit 23.A1: Consents Of Experts And Counsel
Exhibit 23.B1: Consents Of Experts And Counsel
Exhibit 23.C1: Consents Of Experts And Counsel
Exhibit 23.D1: Consents Of Experts And Counsel
Exhibit 23.E1: Consents Of Experts And Counsel
Exhibit 23.F1: Consents Of Experts And Counsel
Exhibit 23.F2: Consents Of Experts And Counsel
Exhibit 24.A1: Power Of Attorney
Exhibit 24.B1: Power Of Attorney
Exhibit 24.B2: Power Of Attorney
Exhibit 24.B3: Power Of Attorney
Exhibit 24.C1: Power Of Attorney
Exhibit 24.C2: Power Of Attorney
Exhibit 24.D1: Power Of Attorney
Exhibit 24.D2: Power Of Attorney
Exhibit 24.E1: Power Of Attorney
Exhibit 24.F1: Power Of Attorney
Exhibit 31.A1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.A2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.B1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.B2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.C1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.C2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.D1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.D2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.E1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.E2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.F1: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 31.F2: Rule 13A-14(A)/15D-14(A) Certification
Exhibit 32.A: Section 1350 Certification
Exhibit 32.B: Section 1350 Certification
Exhibit 32.C: Section 1350 Certification
Exhibit 32.D: Section 1350 Certification
Exhibit 32.E: Section 1350 Certification
Exhibit 32.F: Section 1350 Certification
Ticker: SO
CIK: 92122
Form Type: 10-K Annual Report
Accession Number: 0000092122-22-000003
Submitted to the SEC: Wed Feb 16 2022 5:44:30 PM EST
Accepted by the SEC: Thu Feb 17 2022
Period: Friday, December 31, 2021
Industry: Electric Services

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