The following table presents Generation’s Operating revenues from affiliates, which are primarily recorded as Purchased power from affiliates and an immaterial amount recorded as Operating and maintenance expense from affiliates at the Utility Registrants:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Operating revenues from affiliates:
ComEd(a)(b)	$	71	$	83	$	241	$	266
PECO(c)	68		43		146		123
BGE(d)	84		65		252		199
PHI	105		83		288		254
Pepco(e)	80		66		219		188
DPL(f)	21		14		60		50
ACE(g)	4		3		9		16
Other	3		1		5		2
Total operating revenues from affiliates (Generation)	$	331	$	275	$	932	$	844

(a)Generation has an ICC-approved RFP contract with ComEd to provide a portion of ComEd’s electricity supply requirements. Generation also sells RECs and ZECs to ComEd.

(b)For the three and nine months ended September 30, 2020 , respectively, ComEd’s Purchased power from Generation of $71 million and $252 million is recorded as Operating revenues from ComEd of $71 million and $241 million and as Purchased power and fuel from ComEd of less than $1 million and $11 million at Generation. For the three and nine months ended September 30, 2019 , respectively, ComEd’s Purchased power from Generation of $83 million and $270 million is recorded as Operating revenues from ComEd of $83 million and $266 million and as Purchased power and fuel from ComEd of less than $1 million and $4 million at Generation.

(c)Generation provides electric supply to PECO under contracts executed through PECO’s competitive procurement process. In addition, Generation has a ten-year agreement with PECO to sell solar AECs.

(e)Generation provides electric supply to Pepco under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC.

The Registrants receive a variety of corporate support services from BSC. Pepco, DPL, and ACE also receive corporate support services from PHISCO. See Note 1 - Significant Accounting Policies for additional information regarding BSC and PHISCO.


	Operating and maintenance from affiliates								Capitalized costs
	Three Months Ended September 30,				Nine Months Ended September 30,				Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019		2020		2019		2020		2019
Exelon
BSC									$	148	$	125	$	390	$	357
PHISCO									15		16		45		57
Generation
BSC	$	133	$	138	$	406	$	434	13		18		37		44
ComEd
BSC	65		72		204		195		49		37		133		98
PECO
BSC	34		36		107		110		20		22		53		68
BGE
BSC	38		38		120		116		30		30		88		89
PHI
BSC	36		35		107		102		36		18		79		58
PHISCO	—		—		—		—		15		16		45		57
Pepco
BSC	20		21		61		64		14		8		29		25
PHISCO	28		29		90		92		7		8		20		26

DPL
BSC	13		13		38		39		12		5		26		16
PHISCO	24		24		73		74		4		4		13		16

ACE
BSC	11		10		32		31		10		4		22		13
PHISCO	21		22		65		67		4		4		12		15


				Receivables from affiliates:
	Payables to affiliates:			Generation			ComEd			PECO			BGE			ACE			BSC			PHISCO			Other			Total
Generation					$	19		$	—		$	—		$	—		$	69		$	—		$	25		$	113
ComEd		$	56	(a)				—			—			—			49			—			5			110
PECO		17			—						—			—			24			—			6			47
BGE		8			—			—						—			29			—			2			39
PHI		—			—			—			—			—			3			—			10			13
Pepco		13			—			—			—			—			16			12			2			43
DPL		2			—			—			—			—			11			9			1			23
ACE		4			—			—			—						10			10			—			24
Other		9			1			—			—			1			—			—						11
Total		$	109		$	20		$	—		$	—		$	1		$	211		$	31		$	51		$	423


				Receivables from affiliates:
	Payables to affiliates:			Generation			ComEd			PECO			BGE			ACE			BSC			PHISCO			Other			Total
Generation					$	27		$	—		$	—		$	—		$	67		$	—		$	23		$	117
ComEd		$	78	(a)				—			—			—			54			—			8			140
PECO		27			—						—			—			25			—			3			55
BGE		28			—			—						—			34			—			4			66
PHI		—			—			—			—			—			4			—			10			14
Pepco		34			—			—			—			—			16			15			1			66
DPL		7			—			—			—			3			10			11			1			32
ACE		7			—			—			—						7			10			1			25
Other		9			1			1			1			1			—			—						13
Total		$	190		$	28		$	1		$	1		$	4		$	217		$	36		$	51		$	528

(a)As of September 30, 2020 and December 31, 2019, Generation had a contract liability with ComEd for $28 million and $37 million, respectively, that was included in Other current liabilities on Generation’s Consolidated Balance Sheets. At September 30, 2020 and December 31, 2019, ComEd had a Current Payable to Generation of $28 million and $41 million, respectively, on its Consolidated Balance Sheets, which consisted of Generation’s Current Receivable from ComEd, partially offset by Generation’s contract liability with ComEd.

To provide an additional short-term borrowing option that will generally be more favorable to the borrowing participants than the cost of external financing both Exelon and PHI operate an intercompany money pool. Generation, ComEd, PECO, and PHI Corporate participate in the Exelon money pool. Pepco, DPL, and ACE participate in the PHI intercompany money pool.

Generation has long-term payables to ComEd and PECO as a result of the nuclear decommissioning contractual construct whereby, to the extent NDT funds are greater than the underlying ARO at the end of decommissioning, such amounts are due back to ComEd and PECO, as applicable, for payment to their respective customers. See Note 9 — Asset Retirement Obligations of the Exelon 2019 Form 10-K for additional information.

The following table presents noncurrent receivables from affiliates at ComEd and PECO which are recorded as noncurrent payables to affiliates at Generation:


	September 30, 2020						December 31, 2019
	Exelon		ComEd		PECO		Exelon		ComEd		PECO
ComEd Financing III	$	206	$	205	$	—	$	206	$	205	$	—
PECO Trust III	81		—		81		81		—		81
PECO Trust IV	103		—		103		103		—		103
Total	$	390	$	205	$	184	$	390	$	205	$	184

In connection with the debt obligations assumed by Exelon as part of the Constellation merger, Exelon and subsidiaries of Generation (former Constellation subsidiaries) assumed intercompany loan agreements that mirror the terms and amounts of the third-party debt obligations of Exelon, resulting in intercompany notes payable included in Long-term debt to affiliates in Generation’s Consolidated Balance Sheets and intercompany notes receivable at Exelon Corporate.