EX-21.A 4 x21a-q42021.htm EX-21.A Document

Exhibit 21(a)
Subsidiaries of the Registrant(1)
Name of Company
Jurisdiction of Organization
The Southern Company
Delaware
Alabama Power Company
Alabama
Alabama Property Company
Alabama
Southern Electric Generating Company
Alabama
Georgia Power Company
Georgia
Piedmont-Forrest Corporation
Georgia
Southern Electric Generating Company
Alabama
Mississippi Power Company
Mississippi
Southern Power Company
Delaware
SP Deuel Harvest Wind Energy Class B Holdings, LLC
Delaware
SP Deuel Harvest Wind Energy Holdings, LLC (2)
Delaware
Deuel Harvest Wind Energy Holdings, LLC (3)
Delaware
Deuel Harvest Wind Energy, LLC
Delaware
SP Diamond State Class B Holdings, LLC
Delaware
Diamond State Generation Partners, LLC (4)
Delaware
Beech Ridge Energy II Holdings, LLC (5)
Delaware
Beech Ridge Energy II, LLC
Delaware
SP Skookumchuck Investment, LLC (6)
Delaware
SP Skookumchuck Holdings, LLC (7)
Delaware
SP Skookumchuck Wind Energy Project, LLC
Delaware
Reading Wind Energy Class B Holdings, LLC
Delaware
Reading Wind Energy Holdings, LLC (8)
Delaware
Reading Wind Energy, LLC
Delaware
SP Roserock Investment, Inc.
Delaware
RE Roserock Holdings, LLC (9)
Delaware
RE Roserock, LLC
Delaware
Southern Renewable Energy, Inc.
Delaware
Glass Sands Wind Energy, LLC
Delaware
SP Wildhorse Class B Holdings, LLC
Delaware
SP Wildhorse Holdings, LLC (10)
Delaware
Wildhorse Wind Energy, LLC
Delaware
Jericho Gap Wind, LLC
Delaware
SP Solar GP, Inc.
Delaware
SP Solar Holdings I, LP (11)
Delaware
SP Solar Storage Class B Holdings, LLC (12)
Delaware
SP Solar Storage OpCo, LLC (13)
Delaware
SP Garland Solar Storage, LLC
Delaware
SP Tranquillity Solar Storage, LLC
Delaware
SP Solar Storage Development Holdings, LLC (14)
Delaware
BNB Lamesa Solar, LLC
Delaware



East Pecos Solar, LLC
Delaware
SP Butler Solar, LLC
Delaware
SP Butler Solar Farm, LLC
Delaware
SP Decatur County Solar, LLC
Delaware
SP Decatur Parkway Solar, LLC
Delaware
SP Pawpaw Solar, LLC
Delaware
SP Sandhills Solar, LLC
Delaware
SP Solar Farms, LLC
Delaware
Adobe Solar, LLC
Delaware
Apex Nevada Solar, LLC
Delaware
Calipatria, LLC
Delaware
Campo Verde Solar, LLC
Delaware
Granville Solar, LLC
Delaware
Macho Springs Solar, LLC
Delaware
Macho Springs Solar 2, LLC
Delaware
Morelos Solar, LLC
Delaware
Rutherford Farm, LLC
Delaware
Spectrum Nevada Solar, LLC
Delaware
SP Cimarron I, LLC
Delaware
SP Cimarron Capital, LLC
Delaware
Southern Renewable Partnerships, LLC
Delaware
BSP Holding Company, LLC (15)
Delaware
Boulder Solar Power Parent, LLC
Delaware
Boulder Solar Power, LLC
Delaware
Desert Stateline Holdings, LLC (16)
Delaware
Desert Stateline, LLC
Delaware
Lost Hills Blackwell Holdings, LLC (15)
Delaware
Lost Hills Solar Holdco, LLC
Delaware
Lost Hills Solar, LLC
Delaware
Blackwell Solar Holdings, LLC
Delaware
Blackwell Solar, LLC
Delaware
NS Solar Holdings, LLC (15)
Delaware
North Star Solar, LLC
Delaware
Parrey Holding Company, LLC (15)
Delaware
Parrey Parent, LLC
Delaware
Parrey, LLC
Delaware
RE Silverlake Holdings, LLC (15)
Delaware
RE Garland Holdings LLC
Delaware
RE Garland, LLC
Delaware
RE Garland A, LLC
Delaware
RE Tranquillity Holdings, LLC (15)
Delaware
RE Tranquillity, LLC
Delaware
RE Tranquillity BAAH, LLC
Delaware
SG2 Holdings, LLC (15)
Delaware
SG2 Imperial Valley LLC
Delaware
SP Wind Holdings II, LLC (17)
Delaware
Bethel Wind Farm Class B Holdings, LLC
Delaware



Bethel Wind Farm Holdings, LLC
Delaware
Bethel Wind Farm, LLC
Delaware
Grant Plains Wind, LLC
Delaware
Grant Wind, LLC
Delaware
Grant County Interconnect, LLC (18)
Delaware
Kay Wind, LLC
Delaware
Passadumkeag Windpark, LLC
Delaware
Salt Fork Wind, LLC
Delaware
Tyler Bluff Wind Project, LLC
Delaware
WWH LLC (19)
Delaware
Wake Wind Class B Holdings LLC
Delaware
Wake Wind Holdings, LLC
Delaware
Wake Wind Energy, LLC
Delaware
SP TEP Class B Holdings I, Inc.
Delaware
SP Gaskell West 1 Class B Holdings, LLC
Delaware
SP Gaskell West 1 Holdings, LLC (20)
Delaware
RE Gaskell West 1, LLC
Delaware
SP Wind Development Holdings, LLC
Delaware
SP TEP Formations, Inc.
Delaware
SP Cactus Flats Class B Holdings, LLC
Delaware
Cactus Flats Holdings, LLC (21)
Delaware
SP Cactus Flats Wind Energy, LLC
Delaware
SP Wind Holdings, LLC
Delaware
SPR Development Holdings, LLC (22)
Delaware
Southern Company Gas
Georgia
Southern Company Gas Capital Corporation
Nevada
Atlanta Gas Light Company
Georgia
Georgia Natural Gas Company
Georgia
SouthStar Energy Services LLC
Delaware
Ottawa Acquisition LLC
Illinois
Northern Illinois Gas Company (23)
Illinois
Southern Company Gas Investments, Inc.
Georgia
Southern Company Gas Pipeline Holdings LLC
Georgia
Evergreen Enterprise Holdings LLC
Georgia

(1)This information is as of December 31, 2021. In addition, this list omits certain subsidiaries pursuant to paragraph (b)(21)(ii) of Regulation S-K, Item 601.
(2)SP Deuel Harvest Wind Energy Class B Holdings, LLC and Southern Renewable Energy, Inc. own 99% and 1% of the Class B membership interests, respectively, in the tax equity partnership.
(3)SP Deuel Harvest Wind Energy Holdings, LLC owns 80%.
(4)SP Diamond State Class B Holdings, LLC owns 100% of the Class B membership interests.
(5)Southern Power Company owns 100% of the Class A membership interests and is entitled to 90% of all cash distributions.
(6)Southern Power Company owns 51%.



(7)SP Skookumchuck Investment, LLC owns 100% of the Class B membership interests in the tax equity partnership.
(8)Reading Wind Energy Class B Holdings, LLC owns 100% of the Class B membership interests in the tax equity partnership.
(9)Southern Power Company owns 100% of the Class A membership interests and is entitled to 51% of all cash distributions and SP Roserock Investment Inc. owns 100% of the Class B membership interests and is entitled to 49% of all cash distributions
(10)SP Wildhorse Class B Holdings, LLC owns 100% of the Class B membership interests in the tax equity partnership.
(11)Southern Renewable Energy, Inc. and SP Solar GP, Inc. own 66% and 1%, respectively.
(12)SP Solar Holdings I, LP and SP Solar GP, Inc. own 98% and 2% of the Class A membership interests, respectively..
(13)SP Solar Storage Class B Holdings, LLC owns 100% of the Class B membership interests in the tax equity partnership.
(14)SP Solar Holdings I, LP owns 100% of the Class A membership interests and is entitled to 67% of all cash distributions.
(15)Southern Renewable Partnerships, LLC owns 100% of the Class A membership interests and is entitled to 51% of all cash distributions.
(16)Southern Renewable Partnerships, LLC owns 100% of the Class A membership interests and is entitled to 66% of all cash distributions.
(17)Southern Renewable Energy, Inc. owns 100% of the Class B membership interests in the tax equity partnership.
(18)Grant Wind, LLC and Grant Plains Wind, LLC own 50.4% and 49.6%, respectively.
(19)SP Wind Holdings II, LLC owns 90.1%.
(20)SP Gaskell West 1 Class B Holdings, LLC owns 100% of the Class B membership interests in the tax equity partnership.
(21)SP Cactus Flats Class B Holdings, LLC and SP TEP Class B Holdings I, Inc. own 95% and 5%, respectively, of the Class B membership interests in the tax equity partnership.
(22)SP Wind Holdings, LLC owns 51%.
(23)Doing business as Nicor Gas Company.