Exhibit 21
SOUTH JERSEY INDUSTRIES, INC.
SIGNIFICANT SUBSIDIARIES OF REGISTRANT
AS OF DECEMBER 31, 2021
The following is a list of the significant subsidiaries of South Jersey Industries, Inc. in accordance with Item 601 of Regulation S-K.
	Percentage of
	Voting Securities
	Directly or Indirectly		State of
	Owned by Immediate Parent	Relationship	Incorporation/Formation
South Jersey Gas Company	100	(3)	New Jersey
Marina Energy LLC	100	(2)	New Jersey
South Jersey Energy Company	100	(2)	New Jersey
South Jersey Resources Group, LLC	100	(2)	Delaware
SJI Energy Enterprises, LLC	100	(1)	New Jersey
SJI Midstream, LLC	100	(1)	Delaware
SJI Utilities, Inc.	100	(1)	New Jersey
Elizabethtown Gas Company	100	(3)	New Jersey
SJI Renewable Energy Ventures, LLC	100	(2)	New Jersey
SJI RNG Devco, LLC	100	(2)	New Jersey
(1)  Subsidiary of South Jersey Industries, Inc.
(2)  Subsidiary of SJI Energy Enterprises, LLC
(3) Subsidiary of SJI Utilities, Inc.