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 March 31,
		2021		2020
Operating revenues from affiliates:
ComEd(a)(b)		$	78	$	90
PECO(c)		42		37
BGE(d)		72		99
PHI		100		103
Pepco(e)		75		79
DPL(f)		21		22
ACE(g)		4		2
Other		3		1
Total operating revenues from affiliates (Generation)		$	295	$	330

(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 months ended March 31, 2021, ComEd’s Purchased power from Generation of $84 million is recorded as Operating revenues from ComEd of $78 million and as Purchased power and fuel from ComEd of $6 million at Generation. For the three months ended March 31, 2020, ComEd’s Purchased power from Generation of $97 million is recorded as Operating revenues from ComEd of $90 million and as Purchased power and fuel from ComEd of $7 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.

(d)Generation provides a portion of BGE’s energy requirements under its MDPSC-approved market-based SOS and gas commodity programs.

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

(f)Generation provides a portion of DPL's energy requirements under its MDPSC and DPSC-approved market-based SOS commodity programs.

(g)Generation provides electric supply to ACE under contracts executed through ACE's competitive procurement process.

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 March 31,					Three Months Ended March 31,
		2021		2020			2021		2020
Exelon
BSC							$	124	$	113
PHISCO							17		14
Generation
BSC		$	144	$	140		10		11
ComEd
BSC		71		72			45		42
PECO
BSC		39		37			17		16
BGE
BSC		43		41			20		28
PHI
BSC		39		37			32		16
PHISCO		—		—			17		14
Pepco
BSC		22		21			13		6
PHISCO		30		30			7		6

DPL
BSC		14		13			10		5
PHISCO		25		24			5		4

ACE
BSC		12		11			8		4
PHISCO		22		22			5		4


				Receivables from affiliates:
	Payables to affiliates:			Generation			ComEd			PECO			BGE			Pepco			DPL			ACE			BSC			PHISCO			Other			Total
Generation					$	17		$	—		$	—		$	—		$	—		$	—		$	84		$	—		$	24		$	125
ComEd		$	50	(a)				—			—			—			—			—			49			—			5			104
PECO		15			—						—			—			—			—			24			—			7			46
BGE		11			1			—						—			—			—			30			—			1			43
PHI		—			1			—			—			—			—			—			7			—			10			18
Pepco		12			1			—			—						—			—			16			14			1			44
DPL		2			—			—			—			—						—			11			11			—			24
ACE		8			—			—			—			—			—						8			10			1			27
Other		8			1			—			—			—			—			1			—			—						10
Total		$	106		$	21		$	—		$	—		$	—		$	—		$	1		$	229		$	35		$	49		$	441


				Receivables from affiliates:
	Payables to affiliates:			Generation			ComEd			PECO			BGE			Pepco			DPL			ACE			BSC			PHISCO			Other			Total
Generation					$	13		$	—		$	—		$	—		$	—		$	—		$	72		$	—		$	22		$	107
ComEd		$	78	(a)				—			—			—			—			—			59			—			9			146
PECO		17			1						—			—			—			—			28			—			4			50
BGE		11			—			—						—			—			—			47			—			3			61
PHI		—			—			—			—			—			—			—			4			—			11			15
Pepco		13			2			—			1						—			—			25			14			—			55
DPL		3			1			—			—			—						—			21			10			1			36
ACE		6			—			—			—			—			—						15			9			1			31
Other		25			5			2			2			2			1			6			—			—						43
Total		$	153		$	22		$	2		$	3		$	2		$	1		$	6		$	271		$	33		$	51		$	544

(a)As of March 31, 2021 and December 31, 2020, Generation had a contract liability with ComEd for $24 million and $50 million, respectively, that was included in Other current liabilities on Generation’s Consolidated Balance Sheets. At March 31, 2021 and December 31, 2020, ComEd had a Current Payable to Generation of $26 million and $28 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 10 — Asset Retirement Obligations of the Exelon 2020 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:


	March 31, 2021						December 31, 2020
	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.