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Accounts Receivable (Tables)
 9 Months Ended
Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]  
Allowance for credit loss rollforward
The following tables present the rollforward of Allowance for Credit Losses on Customer Accounts Receivable.
Three Months Ended September 30, 2021
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of June 30, 2021$395 $75 $89 $111 $27 $93 $38 $19 $36 
Plus: Current period provision for expected credit losses(a)
47 10 11 1 7 18 5 3 10 
Less: Write-offs, net of recoveries(b)
33 1 12 11 3 6 2 4 — 
Balance as of September 30, 2021$409 $84 $88 $101 $31 $105 $41 $18 $46 
Three Months Ended September 30, 2020
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of June 30, 2020$261 $33 $72 $71 $23 $62 $24 $18 $20 
Plus: Current period provision for expected credit losses(c)
114 1 37 27 14 35 11 7 17 
Less: Write-offs, net of recoveries(b)
17 1 4 2 2 8 — 3 5 
Balance as of September 30, 2020$358 $33 $105 $96 $35 $89 $35 $22 $32 
Nine Months Ended September 30, 2021
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of December 31, 2020$366 $32 $97 $116 $35 $86 $32 $22 $32 
Plus: Current period provision for expected credit losses(d)
122 57 23 7 2 33 15 4 14 
Less: Write-offs, net of recoveries(b)
79 5 32 22 6 14 6 8 — 
Balance as of September 30, 2021$409 $84 $88 $101 $31 $105 $41 $18 $46 
Nine Months Ended September 30, 2020
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of December 31, 2019$243 $80 $59 $55 $12 $37 $13 $11 $13 
Plus: Current period provision for expected credit losses(c)
222 13 62 56 28 63 24 14 25 
Less: Write-offs, net of recoveries(b)
51 4 16 15 5 11 2 3 6 
Less: Sale of customer accounts receivable(e)
56 56 — — — — — — — 
Balance as of September 30, 2020$358 $33 $105 $96 $35 $89 $35 $22 $32 
__________
(a)For ACE, the increase is primarily a result of increased aging of receivables and a slight decrease in the expected recovery rate.
(b)Recoveries were not material to the Registrants.
(c)For the Utility Registrants, the increase is primarily as a result of increased aging of receivables, the temporary suspension of customer disconnections for non-payment, temporary cessation of new late payment fees, and reconnections of service to customers previously disconnected due to COVID-19.
(d)For Generation, primarily relates to the impacts of the February 2021 extreme cold weather event. See Note 3 — Regulatory Matters for additional information. For PHI, Pepco, and ACE, the increase is primarily a result of increased aging of receivables and a slight decrease in the expected recovery rate.
(e)See below for additional information on the sale of customer accounts receivable at Generation in the second quarter of 2020.
The following tables present the rollforward of Allowance for Credit Losses on Other Accounts Receivable.
Three Months Ended September 30, 2021
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of June 30, 2021$72 $1 $18 $7 $8 $38 $16 $9 $13 
Plus: Current period provision for expected credit losses9 3 2 1 1 2 1 (1)2 
Less: Write-offs, net of recoveries(a)
4 — 1 1 1 — — — — 
Balance as of September 30, 2021$77 $4 $19 $7 $8 $40 $17 $8 $15 
Three Months Ended September 30, 2020
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of June 30, 2020$61 $— $22 $7 $6 $26 $11 $7 $8 
Plus: Current period provision for expected credit losses15 — 5 1 3 6 2 1 3 
Less: Write-offs, net of recoveries(a)
1 — — 1 — — — — — 
Balance as of September 30, 2020$75 $— $27 $7 $9 $32 $13 $8 $11 
Nine Months Ended September 30, 2021
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of December 31, 2020$71 $— $21 $8 $9 $33 $13 $9 $11 
Plus: Current period provision for expected credit losses15 4 — 2 2 7 4 (1)4 
Less: Write-offs, net of recoveries(a)
9 — 2 3 3 — — — — 
Balance as of September 30, 2021$77 $4 $19 $7 $8 $40 $17 $8 $15 
Nine Months Ended September 30, 2020
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Balance as of December 31, 2019$48 $— $20 $7 $5 $16 $7 $4 $5 
Plus: Current period provision for expected credit losses36 — 9 3 7 17 6 4 7 
Less: Write-offs, net of recoveries(a)
9 — 2 3 3 1 — — 1 
Balance as of September 30, 2020$75 $— $27 $7 $9 $32 $13 $8 $11 
__________
(a)Recoveries were not material to the Registrants.
Unbilled customer revenue
The following table provides additional information about unbilled customer revenues recorded in the Registrants' Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020.
Unbilled customer revenues(a)
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
September 30, 2021$941 $359 $224 $113 $98 $147 $70 $34 $43 
December 31, 2020998 258 218 147 197 178 87 62 29 
__________
(a)Unbilled customer revenues are classified in Customer accounts receivables, net in the Registrants' Consolidated Balance Sheets.
Purchases and sales of accounts receivable
The following table summarizes the impact of the sale of certain receivables:
September 30, 2021December 31, 2020
Derecognized receivables transferred at fair value$1,401 $1,139 
Cash proceeds received900 500 
DPP501 639 
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Loss on sale of receivables(a)
$1 $8 $26 $23 
__________
(a)Reflected in Operating and maintenance expense in Exelon's and Generation's Consolidated Statements of Operations and Comprehensive Income.
Nine Months Ended September 30,
20212020
Proceeds from new transfers(a)
$4,440 $1,889 
Cash collections received on DPP and reinvested in the Facility(b)
2,652 2,518 
Cash collections reinvested in the Facility7,092 4,407 
__________
(a)Customer accounts receivable sold into the Facility were $7,373 million and $4,515 million for the nine months ended September 30, 2021 and September 30, 2020, respectively.
(b)Does not include the $400 million in cash proceeds received from the Purchasers in the first quarter of 2021.
Generation is required, under supplier tariffs in ISO-NE, MISO, NYISO, and PJM, to sell customer and other receivables to utility companies, which include the Utility Registrants. The Utility Registrants are required, under separate legislation and regulations in Illinois, Pennsylvania, Maryland, District of Columbia, Delaware, and New Jersey, to purchase certain receivables from alternative retail electric and, as applicable, natural gas suppliers that participate in the utilities' consolidated billing. The following tables present the total receivables purchased and sold.
Nine Months Ended September 30, 2021
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Total receivables purchased$2,945 $— $810 $795 $531 $826 $504 $166 $156 
Total receivables sold100 117 — — — — — — — 
Related party transactions:
Receivables purchased from Generation— — — — 17 — — — — 
Receivables sold to the Utility Registrants— 17 — — — — — — — 
Nine Months Ended September 30, 2020
ExelonGenerationComEdPECOBGEPHIPepcoDPLACE
Total receivables purchased$2,698 $— $865 $786 $508 $787 $484 $160 $143 
Total receivables sold542 790 — — — — — — — 
Related party transactions:
Receivables purchased from Generation— — 34 67 75 72 51 13 8 
Receivables sold to the Utility Registrants— 248 — — — — — — —