Exhibit 12.1

THE SOUTHERN COMPANY

Computation of ratio of earnings to fixed charges for

the five years ended December 31, 2017

	Year ended December 31,
		2013			2014			2015			2016			2017
	---------------------------------------------Millions of Dollars-----------------------------------------------
EARNINGS AS DEFINED IN ITEM 503 OF REGULATION S-K:
Earnings Before Income Taxes	$	2,560		$	3,007		$	3,614		$	3,385		$	916
Distributed income of equity investees		—			—			—			65			181
Interest expense, net of amounts capitalized		826			835			842			1,318			1,698
Interest component of rental expense		97			113			127			141			144
Amortization of capitalized interest		2			5			5			5			6
AFUDC - Debt funds		77			86			88			76			66
Less: Dividends on preferred and preference stock of subsidiaries		(66	)		(68	)		(54	)		(45	)		(38	)
Earnings as defined	$	3,496		$	3,978		$	4,622		$	4,945		$	2,973
FIXED CHARGES AS DEFINED IN ITEM 503 OF REGULATION S-K:
Interest on long-term debt	$	817		$	824		$	881		$	1,293		$	1,638
Interest on affiliated loans		7			7			7			8			9
Interest on interim obligations		5			4			9			33			43
Amortization of debt discount, premium and expense, net		46			46			48			60			70
Other interest charges		29			42			(15	)		—			4
Capitalized interest		14			25			36			50			23
Interest component of rental expense		98			111			127			141			144
Fixed charges as defined		1,016			1,059			1,093			1,585			1,931
Tax deductible preferred dividends		1			1			1			1			1
		1,017			1,060			1,094			1,586			1,932
Non-tax deductible preferred and preference dividends		65			67			52			44			36
Ratio of net income before taxes to net income	x	1.497		x	1.481		x	1.493		x	1.381		x	1.162
Preferred and preference dividend requirements before income taxes		97			99			78			61			43
Fixed charges plus preferred and preference dividend requirements	$	1,114		$	1,159		$	1,172		$	1,647		$	1,975
RATIO OF EARNINGS TO FIXED CHARGES		3.14			3.43			3.94			3.00			1.51