Prior to completion of the separation on February 1, 2022, we engaged in transactions with affiliates of Exelon in the normal course of business, these affiliate transactions are summarized in the tables below. After February 1, 2022, all transactions with Exelon or its affiliates are no longer related party transactions.


	Three Months Ended March 31,
	2022		2021
ComEd(a)	$	58	$	78
PECO(b)	33		42
BGE(c)	18		72
PHI	51		100
Pepco(d)	39		75
DPL(e)	10		21
ACE(f)	2		4
Other	—		3
Total operating revenues from affiliates	$	160	$	295

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

(b)We provide electric supply to PECO under contracts executed through PECO’s competitive procurement process. In addition, we have a ten-year agreement with PECO to sell solar AECs.

(c)We provide a portion of BGE’s energy requirements under its MDPSC-approved market-based SOS and gas commodity programs.

(d)We provide electric supply to Pepco under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC.

(e)We provide a portion of DPL's energy requirements under its MDPSC and DEPSC approved market-based SOS commodity programs.

(f)We provide electric supply to ACE under contracts executed through ACE's competitive procurement process.

We received a variety of corporate support services from Exelon. Through its business services subsidiary, BSC, Exelon provided support services at cost, including legal, human resources, financial, information technology, and supply management services. The costs of BSC were directly charged or allocated to us. Certain of these services continue after the separation and are covered by the TSA. See Note 1 — Basis of Presentation for additional information.


Operating and maintenance from affiliates				Capitalized costs
Three Months Ended March 31,				Three Months Ended March 31,
2022(a)		2021		2022(a)		2021
$	44	$	144	$	15	$	10

The following tables present Current receivables from affiliates and Current payables to affiliates:


	December 31, 2021
		Receivables from affiliates:		Payables to affiliates:
ComEd		$	84	$	13
PECO		30		—
BGE		4		—
Pepco		20		—
DPL		4		—
ACE		7		—
BSC		—		102
Other		11		16
Total(a)		$	160	$	131

(a)Prior to the completion of the separation on February 1, 2022, we engaged in transactions with affiliates of Exelon in the normal course of business. As of March 31, 2022, all transactions with Exelon or its affiliates are third party transactions.

We have Noncurrent 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 8 — Nuclear Decommissioning for additional information.