Acquisitions and Dispositions (Tables)

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Schedule of Construction Projects

Project Facility	Resource	Approximate Nameplate Capacity (MW)	Location	Actual/Expected COD	PPA Contract Period
Projects Completed During the Six Months Ended June 30, 2019
Mankato expansion(a)	Natural Gas	385	Mankato, MN	May 2019	20 years
Projects Under Construction as of June 30, 2019
Wildhorse Mountain(b)	Wind	100	Pushmataha County, OK	Fourth quarter 2019	20 years
Reading(c)	Wind	200	Osage and Lyon Counties, KS	Second quarter 2020	12 years

(a) In November 2018, Southern Power entered into an agreement to sell all of its equity interests in Plant Mankato, including this expansion that was completed during May 2019. This transaction is subject to state commission approvals and is expected to close in fall 2019. The expansion unit started providing energy under a PPA with Northern States Power on June 1, 2019. See "Sales of Natural Gas and Biomass Plants" below.

(b) In May 2018, Southern Power purchased 100% of the Wildhorse Mountain facility. Southern Power entered into a tax equity partnership in June 2019 with funding of tax equity amounts expected to occur upon commercial operation.

(c)

In August 2018, Southern Power purchased 100% of the membership interests of the Reading facility from the joint development arrangement with Renewable Energy Systems Americas, Inc. Southern Power may enter into a tax equity partnership, in which case it would then own 100% of the class B membership interests.

Disposal Groups, Including Discontinued Operations

Gulf Power and Southern Power's equity interests in Plant Oleander and Plant Stanton Unit A (together, the Florida Plants) and Plant Nacogdoches represented individually significant components of Southern Company and Southern Power, respectively; therefore, pre-tax profit for these components for the three and six months ended June 30, 2019 and 2018 is presented below:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
	(in millions)
Earnings before income taxes:
Gulf Power	$	—	$	31	$	—	$	87
Southern Power's Florida Plants	$	—	$	14	$	—	$	24
Southern Power's Plant Nacogdoches(*)	$	9	$	7	$	16	$	13

(*)

Earnings before income taxes for Plant Nacogdoches for the three and six months ended June 30, 2019 represents the beginning of the corresponding period through June 13, 2019 (the divestiture date).

The following table provides Southern Company's and Southern Power's major classes of assets and liabilities classified as held for sale at June 30, 2019 and December 31, 2018:

	Southern Company		Southern Power
	(in millions)
At June 30, 2019
Assets Held for Sale:
Current assets	$	58	$	10
Total property, plant, and equipment	588		559
Goodwill and other intangible assets	51		40
Other non-current assets	46		—
Total Assets Held for Sale	$	743	$	609
Liabilities Held for Sale:
Current liabilities	$	36	$	10
Other non-current liabilities	39		—
Total Liabilities Held for Sale	$	75	$	10
At December 31, 2018
Assets Held for Sale:
Current assets	$	393	$	8
Total property, plant, and equipment	4,583		536
Other intangible assets	40		40
Other non-current assets	727		—
Total Assets Held for Sale	$	5,743	$	584
Liabilities Held for Sale:
Current liabilities	$	425	$	15
Long-term debt	1,286		—
Accumulated deferred income taxes	618		—
Other non-current liabilities	932		—
Total Liabilities Held for Sale	$	3,261	$	15