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Segment Information (Tables)

9 Months Ended

Sep. 30, 2020

Analysis and reconciliation of reportable segment information

An analysis and reconciliation of the Registrants’ reportable segment information to the respective information in the consolidated financial statements for the three and nine months ended September 30, 2020 and 2019 is as follows:

Three Months Ended September 30, 2020 and 2019


	Generation		ComEd		PECO		BGE		PHI		Other(a)		Intersegment Eliminations		Exelon
Operating revenues(b):
2020
Competitive businesses electric revenues	$	4,201	$	—	$	—	$	—	$	—	$	—	$	(326)	$	3,875
Competitive businesses natural gas revenues	323		—		—		—		—		—		—		323
Competitive businesses other revenues	135		—		—		—		—		—		(3)		132
Rate-regulated electric revenues	—		1,643		759		646		1,339		—		(22)		4,365
Rate-regulated natural gas revenues	—		—		54		85		23		—		(3)		159
Shared service and other revenues	—		—		—		—		6		484		(491)		(1)
Total operating revenues	$	4,659	$	1,643	$	813	$	731	$	1,368	$	484	$	(845)	$	8,853
2019
Competitive businesses electric revenues	$	4,314	$	—	$	—	$	—	$	—	$	—	$	(275)	$	4,039
Competitive businesses natural gas revenues	265		—		—		—		—		—		1		266
Competitive businesses other revenues	195		—		—		—		—		—		(1)		194
Rate-regulated electric revenues	—		1,583		716		619		1,357		—		(7)		4,268
Rate-regulated natural gas revenues	—		—		62		84		20		—		(3)		163
Shared service and other revenues	—		—		—		—		3		474		(478)		(1)
Total operating revenues	$	4,774	$	1,583	$	778	$	703	$	1,380	$	474	$	(763)	$	8,929



	Generation		ComEd		PECO		BGE		PHI		Other(a)		Intersegment Eliminations		Exelon
Intersegment revenues(c):
2020	$	331	$	15	$	3	$	6	$	6	$	485	$	(845)	$	1
2019	275		4		1		6		4		474		(764)		—
Depreciation and amortization:
2020	$	558	$	294	$	85	$	133	$	200	$	19	$	—	$	1,289
2019	407		259		83		116		193		25		—		1,083
Operating expenses:
2020	$	4,727	$	1,302	$	658	$	642	$	1,102	$	489	$	(833)	$	8,087
2019	4,274		1,256		595		612		1,124		457		(759)		7,559
Interest expense, net:
2020	$	80	$	95	$	39	$	34	$	67	$	89	$	—	$	404
2019	109		91		33		31		66		79		—		409
Income (loss) before income taxes:
2020	$	219	$	256	$	122	$	61	$	215	$	(87)	$	—	$	786
2019	501		245		154		67		203		(68)		—		1,102
Income Taxes:
2020	$	100	$	60	$	(16)	$	8	$	(1)	$	65	$	—	$	216
2019	87		45		14		12		14		—		—		172
Net income (loss):
2020	$	117	$	196	$	138	$	53	$	216	$	(151)	$	—	$	569
2019	244		200		140		55		189		(68)		—		760
Capital Expenditures:
2020	$	282	$	554	$	312	$	290	$	386	$	9	$	—	$	1,833
2019	392		452		228		300		308		7		—		1,687

__________

(a)Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities.

(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 17 — Supplemental Financial Information for additional information on total utility taxes.

(c)Intersegment revenues exclude sales to unconsolidated affiliates. The intersegment profit associated with Generation’s sale of certain products and services by and between Exelon’s segments is not eliminated in consolidation due to the recognition of intersegment profit in accordance with regulatory accounting guidance. For Exelon, these amounts are included in Operating revenues in the Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Related Party Transactions for additional information on intersegment revenues.

PHI:


	Pepco		DPL		ACE		Other(a)		Intersegment Eliminations		PHI
Operating revenues(b):
2020
Rate-regulated electric revenues	$	611	$	314	$	420	$	—	$	(6)	$	1,339
Rate-regulated natural gas revenues	—		23		—		—		—		23
Shared service and other revenues	—		—		—		91		(85)		6
Total operating revenues	$	611	$	337	$	420	$	91	$	(91)	$	1,368
2019
Rate-regulated electric revenues	$	642	$	299	$	419	$	—	$	(3)	$	1,357
Rate-regulated natural gas revenues	—		20		—		—		—		20
Shared service and other revenues	—		—		—		92		(89)		3
Total operating revenues	$	642	$	319	$	419	$	92	$	(92)	$	1,380
Intersegment revenues(c):
2020	$	3	$	3	$	1	$	90	$	(91)	$	6
2019	2		1		1		93		(93)		4
Depreciation and amortization:
2020	$	96	$	48	$	48	$	8	$	—	$	200
2019	95		46		43		9		—		193
Operating expenses:
2020	$	465	$	296	$	338	$	94	$	(91)	$	1,102
2019	515		268		340		95		(94)		1,124
Interest expense, net:
2020	$	35	$	15	$	15	$	2	$	—	$	67
2019	33		15		15		3		—		66
Income (loss) before income taxes:
2020	$	121	$	28	$	68	$	(2)	$	—	$	215
2019(d)	103		38		65		(3)		—		203
Income Taxes:
2020	$	3	$	1	$	(7)	$	2	$	—	$	(1)
2019	5		5		2		2		—		14
Net income (loss):
2020	$	118	$	27	$	75	$	(4)	$	—	$	216
2019	98		33		63		(5)		—		189
Capital Expenditures:
2020	$	188	$	94	$	103	$	1	$	—	$	386
2019	157		85		73		(7)		—		308

__________

(a)Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities.

(c)Includes intersegment revenues with ComEd, BGE, and PECO, which are eliminated at Exelon.

(d)The Income (loss) before income taxes amounts in Other and Intersegment Eliminations have been adjusted by an offsetting $195 million for consistency with the Exelon consolidating disclosure above.

Analysis and reconciliation of reportable segment revenues for Generation

The following tables disaggregate the Registrants' revenue recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For Generation, the disaggregation of revenues reflects Generation’s two primary products of power sales and natural gas sales, with further disaggregation of power sales provided by geographic region. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of rate-regulated electric sales and rate-regulated natural gas sales (where applicable), with further disaggregation of these tariff

sales provided by major customer groups. Exelon’s disaggregated revenues are consistent with Generation and the Utility Registrants, but exclude any intercompany revenues.

Competitive Business Revenues (Generation):



	Three Months Ended September 30, 2020
	Revenues from external customers(a)						Intersegment Revenues		Total Revenues
	Contracts with customers		Other(b)		Total
Mid-Atlantic	$	1,327	$	(20)	$	1,307	$	6	$	1,313
Midwest	974		68		1,042		1		1,043
New York	401		5		406		—		406
ERCOT	249		74		323		7		330
Other Power Regions	937		186		1,123		(14)		1,109
Total Competitive Businesses Electric Revenues	3,888		313		4,201		—		4,201
Competitive Businesses Natural Gas Revenues	169		154		323		—		323
Competitive Businesses Other Revenues(c)	85		50		135		—		135
Total Generation Consolidated Operating Revenues	$	4,142	$	517	$	4,659	$	—	$	4,659



	Three Months Ended September 30, 2019
	Revenues from external customers(a)						Intersegment revenues		Total Revenues
	Contracts with customers		Other(b)		Total
Mid-Atlantic	$	1,351	$	10	$	1,361	$	3	$	1,364
Midwest	1,052		47		1,099		(17)		1,082
New York	414		15		429		—		429
ERCOT	288		72		360		5		365
Other Power Regions	873		192		1,065		(25)		1,040
Total Competitive Businesses Electric Revenues	3,978		336		4,314		(34)		4,280
Competitive Businesses Natural Gas Revenues	160		105		265		34		299
Competitive Businesses Other Revenues(c)	112		83		195		—		195
Total Generation Consolidated Operating Revenues	$	4,250	$	524	$	4,774	$	—	$	4,774

__________

(a)Includes all wholesale and retail electric sales to third parties and affiliated sales to the Utility Registrants.

(b)Includes revenues from derivatives and leases.

(c)Other represents activities not allocated to a region. See text above for a description of included activities. Includes unrealized mark-to-market gains of $37 million and $77 million in 2020 and 2019, respectively, and the elimination of intersegment revenues.

Revenues net of purchased power and fuel expense (Generation):



	Three Months Ended September 30, 2020						Three Months Ended September 30, 2019
	RNF from external customers(a)		Intersegment RNF		Total RNF		RNF from external customers(a)		Intersegment RNF		Total RNF
Mid-Atlantic	$	586	$	5	$	591	$	684	$	5	$	689
Midwest	748		2		750		763		(16)		747
New York	281		4		285		288		3		291
ERCOT	141		6		147		76		(4)		72
Other Power Regions	253		(28)		225		212		(28)		184
Total Revenues net of purchased power and fuel expense for Reportable Segments	2,009		(11)		1,998		2,023		(40)		1,983
Other(b)	336		11		347		100		40		140
Total Generation Revenues net of purchased power and fuel expense	$	2,345	$	—	$	2,345	$	2,123	$	—	$	2,123

__________

(a)Includes purchases and sales from/to third parties and affiliated sales to the Utility Registrants.

(b)Other represents activities not allocated to a region. See text above for a description of included activities. Includes unrealized mark-to-market gains of $255 million and $17 million in 2020 and 2019, respectively, accelerated nuclear fuel amortization associated with announced early plant retirements as discussed in Note 6 - Early Plant Retirements of $24 million, which includes an impairment charge of $10 million, and $3 million decrease to revenue net of purchased power and fuel expense in 2020 and 2019, respectively, and the elimination of intersegment RNF.

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

Electric and Gas Revenue by Customer Class (Utility Registrants):



	Three Months Ended September 30, 2020
Revenues from contracts with customers	ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Rate-regulated electric revenues
Residential	$	920	$	518	$	389	$	763	$	307	$	193	$	263
Small commercial & industrial	379		104		65		134		36		45		53
Large commercial & industrial	135		66		113		262		195		21		46
Public authorities & electric railroads	10		7		7		14		8		3		3
Other(a)	234		58		78		141		47		44		50
Total rate-regulated electric revenues(b)	$	1,678	$	753	$	652	$	1,314	$	593	$	306	$	415
Rate-regulated natural gas revenues
Residential	$	—	$	32	$	55	$	11	$	—	$	11	$	—
Small commercial & industrial	—		16		9		6		—		6		—
Large commercial & industrial	—		—		21		1		—		1		—
Transportation	—		6		—		3		—		3		—
Other(c)	—		1		3		2		—		2		—
Total rate-regulated natural gas revenues(d)	$	—	$	55	$	88	$	23	$	—	$	23	$	—
Total rate-regulated revenues from contracts with customers	$	1,678	$	808	$	740	$	1,337	$	593	$	329	$	415

Other revenues
Revenues from alternative revenue programs	$	(38)	$	5	$	(9)	$	31	$	18	$	8	$	5
Other rate-regulated electric revenues(e)	3		—		—		—		—		—		—
Other rate-regulated natural gas revenues(e)	—		—		—		—		—		—		—

Total other revenues	$	(35)	$	5	$	(9)	$	31	$	18	$	8	$	5
Total rate-regulated revenues for reportable segments	$	1,643	$	813	$	731	$	1,368	$	611	$	337	$	420



	Three Months Ended September 30, 2019
Revenues from contracts with customers	ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Rate-regulated electric revenues
Residential	$	865	$	479	$	352	$	741	$	311	$	178	$	252
Small commercial & industrial	393		109		64		147		41		48		58
Large commercial & industrial	141		63		116		297		222		26		49
Public authorities & electric railroads	12		9		7		17		11		3		3
Other(a)	222		63		82		164		58		50		56
Total rate-regulated electric revenues(b)	$	1,633	$	723	$	621	$	1,366	$	643	$	305	$	418
Rate-regulated natural gas revenues
Residential	$	—	$	38	$	49	$	9	$	—	$	9	$	—
Small commercial & industrial	—		17		9		4		—		4		—
Large commercial & industrial	—		—		20		1		—		1		—
Transportation	—		5		—		4		—		4		—
Other(c)	—		2		5		2		—		2		—
Total rate-regulated natural gas revenues(d)	$	—	$	62	$	83	$	20	$	—	$	20	$	—
Total rate-regulated revenues from contracts with customers	$	1,633	$	785	$	704	$	1,386	$	643	$	325	$	418

Other revenues
Revenues from alternative revenue programs	$	(56)	$	(11)	$	(5)	$	(9)	$	(3)	$	(6)	$	1
Other rate-regulated electric revenues(e)	6		4		3		3		2		—		—
Other rate-regulated natural gas revenues(e)	—		—		1		—		—		—		—

Total other revenues	$	(50)	$	(7)	$	(1)	$	(6)	$	(1)	$	(6)	$	1
Total rate-regulated revenues for reportable segments	$	1,583	$	778	$	703	$	1,380	$	642	$	319	$	419

__________

(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.

(b)Includes operating revenues from affiliates of $15 million, $3 million, $3 million, $6 million, $3 million, $3 million and $1 million at ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE, respectively, in 2020 and $4 million, $1 million, $2 million, $4 million, $2 million, $1 million and $1 million at ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE, respectively, in 2019.

(c)Includes revenues from off-system natural gas sales.

(d)Includes operating revenues from affiliates of less than $1 million and $3 million at PECO and BGE, respectively, in 2020 and less than $1 million and $4 million at PECO and BGE, respectively, in 2019.

(e)Includes late payment charge revenues.

Electric and Gas Revenue by Customer Class (Utility Registrants):



	Nine Months Ended September 30, 2020
Revenues from contracts with customers	ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Rate-regulated electric revenues
Residential	$	2,389	$	1,277	$	1,034	$	1,825	$	779	$	501	$	545
Small commercial & industrial	1,067		291		183		355		101		127		127
Large commercial & industrial	388		174		311		755		558		66		131
Public authorities & electric railroads	33		21		20		45		25		10		10
Other(a)	663		171		233		471		166		148		159
Total rate-regulated electric revenues(b)	$	4,540	$	1,934	$	1,781	$	3,451	$	1,629	$	852	$	972
Rate-regulated natural gas revenues
Residential	$	—	$	252	$	342	$	68	$	—	$	68	$	—
Small commercial & industrial	—		86		55		30		—		30		—
Large commercial & industrial	—		—		96		3		—		3		—
Transportation	—		18		—		10		—		10		—
Other(c)	—		3		16		5		—		5		—
Total rate-regulated natural gas revenues(d)	$	—	$	359	$	509	$	116	$	—	$	116	$	—
Total rate-regulated revenues from contracts with customers	$	4,540	$	2,293	$	2,290	$	3,567	$	1,629	$	968	$	972

Other revenues
Revenues from alternative revenue programs	$	(51)	$	10	$	(10)	$	(15)	$	20	$	(15)	$	(20)
Other rate-regulated electric revenues(e)	10		3		3		2		1		1		—
Other rate-regulated natural gas revenues(e)	—		—		1		—		—		—		—

Total other revenues	$	(41)	$	13	$	(6)	$	(13)	$	21	$	(14)	$	(20)
Total rate-regulated revenues for reportable segments	$	4,499	$	2,306	$	2,284	$	3,554	$	1,650	$	954	$	952



	Nine Months Ended September 30, 2019
Revenues from contracts with customers	ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Rate-regulated electric revenues
Residential	$	2,221	$	1,231	$	1,019	$	1,816	$	792	$	499	$	525
Small commercial & industrial	1,103		304		193		387		114		141		132
Large commercial & industrial	399		163		335		843		633		75		135
Public authorities & electric railroads	35		23		20		47		27		10		10
Other(a)	660		186		242		481		166		151		164
Total rate-regulated electric revenues(b)	$	4,418	$	1,907	$	1,809	$	3,574	$	1,732	$	876	$	966
Rate-regulated natural gas revenues
Residential	$	—	$	285	$	327	$	64	$	—	$	64	$	—
Small commercial & industrial	—		122		55		30		—		30		—
Large commercial & industrial	—		1		93		4		—		4		—
Transportation	—		18		—		11		—		11		—
Other(c)	—		5		19		6		—		6		—
Total rate-regulated natural gas revenues(d)	$	—	$	431	$	494	$	115	$	—	$	115	$	—
Total rate-regulated revenues from contracts with customers	$	4,418	$	2,338	$	2,303	$	3,689	$	1,732	$	991	$	966

Other revenues
Revenues from alternative revenue programs	$	(98)	$	(16)	$	11	$	4	$	10	$	(6)	$	—
Other rate-regulated electric revenues(e)	22		10		10		7		6		1		—
Other rate-regulated natural gas revenues(e)	—		1		3		—		—		1		—

Total other revenues	$	(76)	$	(5)	$	24	$	11	$	16	$	(4)	$	—
Total rate-regulated revenues for reportable segments	$	4,342	$	2,333	$	2,327	$	3,700	$	1,748	$	987	$	966

__________

(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.

(b)Includes operating revenues from affiliates of $31 million, $6 million, $9 million, $13 million, $6 million, $7 million and $3 million at ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE, respectively, in 2020 and $13 million, $4 million, $5 million, $11 million, $5 million, $5 million and $2 million at ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE, respectively, in 2019.

(c)Includes revenues from off-system natural gas sales.

(d)Includes operating revenues from affiliates of $1 million and $7 million at PECO and BGE, respectively, in 2020 and less than $1 million and $13 million at PECO and BGE, respectively, in 2019.

(e)Includes late payment charge revenues.

Year to Date [Member]

Segment Tables [Line Items]

Analysis and reconciliation of reportable segment information

Nine Months Ended September 30, 2020 and 2019


	Generation		ComEd		PECO		BGE		PHI		Other(a)		Intersegment Eliminations		Exelon
Operating revenues(b):
2020
Competitive businesses electric revenues	$	11,367	$	—	$	—	$	—	$	—	$	—	$	(920)	$	10,447
Competitive businesses natural gas revenues	1,348		—		—		—		—		—		(3)		1,345
Competitive businesses other revenues	557		—		—		—		—		—		(5)		552
Rate-regulated electric revenues	—		4,499		1,948		1,763		3,425		—		(50)		11,585
Rate-regulated natural gas revenues	—		—		358		521		116		—		(5)		990
Shared service and other revenues	—		—		—		—		13		1,440		(1,447)		6
Total operating revenues	$	13,272	$	4,499	$	2,306	$	2,284	$	3,554	$	1,440	$	(2,430)	$	24,925
2019
Competitive businesses electric revenues	$	12,365	$	—	$	—	$	—	$	—	$	—	$	(840)	$	11,525
Competitive businesses natural gas revenues	1,479		—		—		—		—		—		—		1,479
Competitive businesses other revenues	436		—		—		—		—		—		(4)		432
Rate-regulated electric revenues	—		4,342		1,901		1,817		3,574		—		(25)		11,609
Rate-regulated natural gas revenues	—		—		432		510		116		—		(12)		1,046
Shared service and other revenues	—		—		—		—		10		1,410		(1,415)		5
Total operating revenues	$	14,280	$	4,342	$	2,333	$	2,327	$	3,700	$	1,410	$	(2,296)	$	26,096

Intersegment revenues(c):
2020	$	932	$	31	$	7	$	16	$	13	$	1,435	$	(2,430)	$	4
2019	844		13		4		18		11		1,410		(2,300)		—
Depreciation and amortization:
2020	$	1,161	$	841	$	259	$	405	$	585	$	61	$	—	$	3,312
2019	1,221		767		247		368		562		72		—		3,237
Operating expenses:
2020	$	12,674	$	3,798	$	1,900	$	1,903	$	3,057	$	1,452	$	(2,397)	$	22,387
2019	13,333		3,431		1,783		1,936		3,106		1,405		(2,291)		22,703
Interest expense, net:
2020	$	277	$	287	$	108	$	99	$	201	$	269	$	—	$	1,241
2019	336		268		100		89		197		231		—		1,221


	Generation		ComEd		PECO		BGE		PHI		Other(a)		Intersegment Eliminations		Exelon
Income (loss) before income taxes:
2020	$	532	$	446	$	310	$	299	$	340	$	(262)	$	—	$	1,665
2019	1,355		674		461		320		436		(218)		—		3,028
Income Taxes:
2020	$	41	$	142	$	(7)	$	26	$	(77)	$	16	$	—	$	141
2019	388		130		51		59		25		(27)		—		626
Net income (loss):
2020	$	485	$	304	$	317	$	273	$	418	$	(278)	$	—	$	1,519
2019	784		544		410		261		412		(191)		—		2,220
Capital Expenditures:
2020	$	1,212	$	1,583	$	824	$	838	$	1,072	$	77	$	—	$	5,606
2019	1,282		1,413		675		842		1,006		41		—		5,259
Total assets:
September 30, 2020	$	47,372	$	34,243	$	12,334	$	11,370	$	23,394	$	9,070	$	(10,016)	$	127,767
December 31, 2019	48,995		32,765		11,469		10,634		22,719		8,484		(10,089)		124,977

__________

(a)Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities.

PHI:


	Pepco		DPL		ACE		Other(a)		Intersegment Eliminations		PHI
Operating revenues(b):
2020
Rate-regulated electric revenues	$	1,650	$	838	$	952	$	—	$	(15)	$	3,425
Rate-regulated natural gas revenues	—		116		—		—		—		116
Shared service and other revenues	—		—		—		279		(266)		13
Total operating revenues	$	1,650	$	954	$	952	$	279	$	(281)	$	3,554
2019
Rate-regulated electric revenues	$	1,748	$	871	$	966	$	(1)	$	(10)	$	3,574
Rate-regulated natural gas revenues	—		116		—		—		—		116
Shared service and other revenues	—		—		—		298		(288)		10
Total operating revenues	$	1,748	$	987	$	966	$	297	$	(298)	$	3,700
Intersegment revenues(c):
2020	$	6	$	7	$	3	$	278	$	(281)	$	13
2019	5		5		2		297		(298)		11
Depreciation and amortization:
2020	$	282	$	143	$	134	$	26	$	—	$	585
2019	281		138		114		29		—		562
Operating expenses:
2020	$	1,364	$	843	$	847	$	284	$	(281)	$	3,057
2019	1,444		820		838		302		(298)		3,106
Interest expense, net:
2020	$	103	$	47	$	45	$	6	$	—	$	201
2019	100		45		44		8		—		197
Income (loss) before income taxes:
2020	$	211	$	71	$	67	$	(9)	$	—	$	340
2019(d)	226		132		89		(11)		—		436
Income Taxes:
2020	$	(16)	$	(20)	$	(39)	$	(2)	$	—	$	(77)
2019	9		16		2		(2)		—		25
Net income (loss):
2020	$	227	$	91	$	106	$	(6)	$	—	$	418
2019	217		116		87		(8)		—		412
Capital Expenditures:
2020	$	512	$	278	$	281	$	1	$	—	$	1,072
2019	455		245		300		6		—		1,006
Total assets:
September 30, 2020	$	9,227	$	4,992	$	4,201	$	5,239	$	(265)	$	23,394
December 31, 2019(d)	8,661		4,830		3,933		5,335		(40)		22,719

__________

(a)Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities.

(c)Includes intersegment revenues with ComEd, BGE, and PECO, which are eliminated at Exelon.

(d)The Income (loss) before income taxes and Total assets amounts in Other and Intersegment Eliminations have been adjusted by an offsetting $422 million and $5.7 billion, respectively, for consistency with the Exelon consolidating disclosure above.

Analysis and reconciliation of reportable segment revenues for Generation

power sales and natural gas sales, with further disaggregation of power sales provided by geographic region. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of rate-regulated electric sales and rate-regulated natural gas sales (where applicable), with further disaggregation of these tariff sales provided by major customer groups. Exelon’s disaggregated revenues are consistent with Generation and the Utility Registrants, but exclude any intercompany revenues.

Competitive Business Revenues (Generation):



	Nine Months Ended September 30, 2020
	Revenues from external customers(a)						Intersegment Revenues		Total Revenues
	Contracts with customers		Other(b)		Total
Mid-Atlantic	$	3,692	$	(152)	$	3,540	$	21	$	3,561
Midwest	2,773		240		3,013		(6)		3,007
New York	1,074		(12)		1,062		(1)		1,061
ERCOT	579		155		734		20		754
Other Power Regions	2,718		300		3,018		(34)		2,984
Total Competitive Businesses Electric Revenues	10,836		531		11,367		—		11,367
Competitive Businesses Natural Gas Revenues	881		467		1,348		—		1,348
Competitive Businesses Other Revenues(c)	268		289		557		—		557
Total Generation Consolidated Operating Revenues	$	11,985	$	1,287	$	13,272	$	—	$	13,272



	Nine Months Ended September 30, 2019
	Revenues from external customers(a)						Intersegment revenues		Total Revenues
	Contracts with customers		Other(b)		Total
Mid-Atlantic	$	3,798	$	9	$	3,807	$	2	$	3,809
Midwest	3,083		172		3,255		(31)		3,224
New York	1,195		16		1,211		—		1,211
ERCOT	594		198		792		13		805
Other Power Regions	2,849		451		3,300		(46)		3,254
Total Competitive Businesses Electric Revenues	11,519		846		12,365		(62)		12,303
Competitive Businesses Natural Gas Revenues	1,041		438		1,479		62		1,541
Competitive Businesses Other Revenues(c)	343		93		436		—		436
Total Generation Consolidated Operating Revenues	$	12,903	$	1,377	$	14,280	$	—	$	14,280

__________

(a)Includes all wholesale and retail electric sales to third parties and affiliated sales to the Utility Registrants.

(b)Includes revenues from derivatives and leases.

(c)Other represents activities not allocated to a region. See text above for a description of included activities. Includes unrealized mark-to-market gains of $238 million and $64 million in 2020 and 2019, respectively, and elimination of intersegment revenues.

Revenues net of purchased power and fuel expense (Generation):



	Nine Months Ended September 30, 2020						Nine Months Ended September 30, 2019
	RNF from external customers(a)		Intersegment RNF		Total RNF		RNF from external customers(a)		Intersegment RNF		Total RNF
Mid-Atlantic	$	1,660	$	23	$	1,683	$	2,007	$	16	$	2,023
Midwest	2,180		(2)		2,178		2,269		(22)		2,247
New York	714		11		725		800		10		810
ERCOT	311		14		325		252		(27)		225
Other Power Regions	608		(70)		538		542		(64)		478
Total Revenues net of purchased power and fuel expense for Reportable Segments	5,473		(24)		5,449		5,870		(87)		5,783
Other(b)	838		24		862		262		87		349
Total Generation Revenues net of purchased power and fuel expense	$	6,311	$	—	$	6,311	$	6,132	$	—	$	6,132

__________

(a)Includes purchases and sales from/to third parties and affiliated sales to the Utility Registrants.

(b)Other represents activities not allocated to a region. See text above for a description of included activities. Includes unrealized mark-to-market gains of $472 million and losses of $84 million in 2020 and 2019, respectively, accelerated nuclear fuel amortization associated with announced early plant retirements as discussed in Note 6 - Early Plant Retirements of $24 million, which includes an impairment charge of $10 million, and $13 million decrease to revenue net of purchased power and fuel expense in 2020 and 2019, respectively, and the elimination of intersegment RNF.