Contingencies and Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2017

Georgia Power's approximate proportionate share of the remaining estimated capital cost to complete Plant Vogtle Units 3 and 4 with in service dates of November 2021 and November 2022, respectively, is as follows:



	(in billions)
Project capital cost forecast	$	7.3
Net investment as of December 31, 2017	(3.4		)
Remaining estimate to complete	$	3.9

Note: Excludes financing costs capitalized through AFUDC and is net of payments received under the Guarantee Settlement Agreement and the Customer Refunds.

GEORGIA POWER CO

Loss Contingencies [Line Items]

Schedule of revised cost and schedule

The Company's approximate proportionate share of the remaining estimated capital cost to complete Plant Vogtle Units 3 and 4 with in service dates of November 2021 and November 2022, respectively, is as follows:



	(in billions)
Project capital cost forecast	$	7.3
Net investment as of December 31, 2017	(3.4		)
Remaining estimate to complete	$	3.9

Note: Excludes financing costs capitalized through AFUDC and is net of payments received under the Guarantee Settlement Agreement and the Customer Refunds.

SOUTHERN Co GAS

Loss Contingencies [Line Items]

Schedule of unrecognized ratemaking amounts

The following table illustrates the Company's authorized ratemaking amounts that are not recognized on its balance sheets. These amounts are primarily composed of an allowed equity rate of return on assets associated with certain of the Company's regulatory infrastructure programs. These amounts will be recognized as revenues in the Company's financial statements in the periods they are billable to customers, the majority of which will be recovered by 2025.



	December 31, 2017		December 31, 2016
	(in millions)
Atlanta Gas Light	$	104	$	110
Virginia Natural Gas	11		11
Elizabethtown Gas^(*)	8		6
Nicor Gas	2		2
Total	$	125	$	129

(*) See Note 11 under "Proposed Sale of Elizabethtown Gas and Elkton Gas" for information on the pending asset sale.