Jointly Owned Electric Utility Plant (Exelon, PECO, DPL and ACE)

12 Months Ended

Dec. 31, 2023

Public Utilities, Property, Plant and Equipment [Abstract]

Jointly Owned Electric Utility Plant (Exelon, PECO, PHI, DPL, and ACE)

PECO's, DPL's, and ACE's material undivided ownership interests in transmission facilities jointly owned with non-affiliated utilities as of December 31, 2023 and 2022 were as follows:


	Transmission
	NJ/DE(a)
Operator	PSEG/DPL
Ownership interest	various
Exelon’s share at December 31, 2023:
Plant in service	$	103
Accumulated depreciation	56
Construction work in progress	2
Exelon’s share at December 31, 2022:
Plant in service	$	103
Accumulated depreciation	56
Construction work in progress	—

__________

(a)PECO, DPL, and ACE own a 42.55%, 1%, and 13.9% share, respectively, in 151.3 miles of 500kV lines located in New Jersey and in the Salem substation. PECO, DPL, and ACE also own a 42.55%, 7.45%, and 7.45% share, respectively, in 2.5 miles of 500kV line located over the Delaware River. ACE also has a 21.78% share in a 500kV New Freedom Switching substation.

Certain facilities are fully owned by Exelon through its 100% ownership in PECO, DPL, and ACE. These facilities are operated by Exelon Registrants. PECO's, DPL's, and ACE's material undivided ownership interests in Exelon owned facilities as of December 31, 2023 and 2022 were as follows:


	PECO			PHI			DPL			ACE
Ownership interest	56		%	44		%	27		%	17		%
Registrant's share at December 31, 2023:
Plant in service	$	7		$	6		$	4		$	2
Accumulated depreciation	—			—			—			—
Construction work in progress	70			58			36			22
Registrant's share at December 31, 2022:
Plant in service	$	7		$	6		$	4		$	2
Accumulated depreciation	—			—			—			—
Construction work in progress	41			36			22			14

PECO's, DPL's, and ACE's undivided ownership interests presented in the tables above are financed with their funds and all operations are accounted for as if such participating interests were wholly owned facilities. PECO's, DPL's, and ACE's share of direct expenses of the jointly owned plants are included in Operating and maintenance expenses in Exelon's, PECO's, PHI's, DPL's, and ACE's Consolidated Statements of Operations and Comprehensive Income.