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Segment Information (Tables)
6 Months Ended
Jun. 30, 2021
Segment Tables [Line Items]  
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 six months ended June 30, 2021 and 2020 is as follows:

Three Months Ended June 30, 2021 and 2020
GenerationComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations
Exelon
Operating revenues(b):
2021
Competitive businesses electric revenues$3,747 $— $— $— $— $— $(250)$3,497 
Competitive businesses natural gas revenues507 — — — — — — 507 
Competitive businesses other revenues(101)— — — — — (3)(104)
Rate-regulated electric revenues— 1,517 610 558 1,113 — (11)3,787 
Rate-regulated natural gas revenues— — 83 124 24 — (3)228 
Shared service and other revenues— — — — 524 (527)— 
Total operating revenues$4,153 $1,517 $693 $682 $1,140 $524 $(794)$7,915 
2020
Competitive businesses electric revenues$3,414 $— $— $— $— $— $(268)$3,146 
Competitive businesses natural gas revenues353 — — — — — — 353 
Competitive businesses other revenues113 — — — — — (1)112 
Rate-regulated electric revenues— 1,417 586 504 983 — (15)3,475 
Rate-regulated natural gas revenues— — 95 112 30 — (1)236 
Shared service and other revenues— — — — 472 (475)— 
Total operating revenues$3,880 $1,417 $681 $616 $1,016 $472 $(760)$7,322 
GenerationComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations
Exelon
Intersegment revenues(c):
2021$254 $$$$$522 $(794)$— 
2020271 11 470 (760)
Depreciation and amortization:
2021$930 $296 $87 $141 $194 $18 $— $1,666 
2020300 274 88 129 191 19 — 1,001 
Operating expenses:
2021$4,469 $1,196 $552 $620 $955 $537 $(768)$7,561 
20203,547 1,345 618 573 956 478 (748)6,769 
Interest expense, net:
2021$76 $98 $42 $34 $67 $79 $— $396 
202087 98 36 32 67 107 — 427 
Income (loss) before income taxes:
2021$124 $238 $106 $37 $138 $(92)$— $551 
2020860 (15)32 17 (108)794 
Income Taxes:
2021$110 $46 $$(8)$(3)$(73)$— $74 
2020329 46 (7)(22)(87)(40)— 219 
Net income (loss):
2021$13 $192 $104 $45 $141 $(19)$— $476 
2020529 (61)39 39 94 (67)574 
Capital Expenditures:
2021$337 $549 $282 $284 $433 $15 $— $1,900 
2020372 523 253 265 310 34 — 1,757 
(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 18— 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 19— Related Party Transactions for additional information on intersegment revenues.
PHI:
PepcoDPLACE
Other(a)
Intersegment
Eliminations
PHI
Operating revenues(b):
2021
Rate-regulated electric revenues$523 $274 $319 $— $(3)$1,113 
Rate-regulated natural gas revenues— 24 — — — 24 
Shared service and other revenues— — — 95 (92)
Total operating revenues$523 $298 $319 $95 $(95)$1,140 
2020
Rate-regulated electric revenues$494 $237 $256 $— $(4)$983 
Rate-regulated natural gas revenues— 30 — — — 30 
Shared service and other revenues— — — 97 (94)
Total operating revenues$494 $267 $256 $97 $(98)$1,016 
Intersegment revenues(c):
2021$$$$95 $(95)$
202097 (98)
Depreciation and amortization:
2021$96 $51 $40 $$— $194 
202092 47 44 — 191 
Operating expenses:
2021$429 $255 $269 $97 $(95)$955 
2020436 263 258 97 (98)956 
Interest expense, net:
2021$35 $16 $14 $$— $67 
202034 15 15 — 67 
Income (loss) before income taxes:
2021$72 $31 $36 $(1)$— $138 
202033 (9)(15)(2)— 
Income Taxes:
2021$(3)$$(1)$— $— $(3)
2020(24)(28)(33)(2)— (87)
Net income (loss):
2021$75 $30 $37 $(1)$— $141 
202057 19 18 — — 94 
Capital Expenditures:
2021$219 $99 $116 $(1)$— $433 
2020144 89 77 — — 310 
__________
(a)Other primarily includes PHI’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 18— Supplemental Financial Information for additional information on total utility taxes.
(c)Includes intersegment revenues with ComEd, BGE, and PECO, which are eliminated at Exelon.
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 June 30, 2021
Revenues from external customers(a)
Intersegment
Revenues
Total
Revenues
Contracts with customers
Other(b)
Total
Mid-Atlantic$1,062 $24 $1,086 $$1,091 
Midwest975 (13)962 — 962 
New York376 381 — 381 
ERCOT179 92 271 275 
Other Power Regions921 126 1,047 (9)1,038 
Total Competitive Businesses Electric Revenues 3,513 234 3,747 — 3,747 
Competitive Businesses Natural Gas Revenues253 254 507 — 507 
Competitive Businesses Other Revenues(c)
107 (208)(101)— (101)
Total Generation Consolidated Operating Revenues$3,873 $280 $4,153 $— $4,153 
Three Months Ended June 30, 2020
Revenues from external customers(a)
Intersegment
revenues
Total
Revenues
Contracts with customers
Other(b)
Total
Mid-Atlantic$1,100 $(35)$1,065 $$1,074 
Midwest855 107 962 — 962 
New York336 341 (1)340 
ERCOT175 52 227 234 
Other Power Regions776 43 819 (15)804 
Total Competitive Businesses Electric Revenues 3,242 172 3,414 — 3,414 
Competitive Businesses Natural Gas Revenues209 144 353 — 353 
Competitive Businesses Other Revenues(c)
86 27 113 — 113 
Total Generation Consolidated Operating Revenues$3,537 $343 $3,880 $— $3,880 
__________
(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 losses of $239 million and gains of $21 million in 2021 and 2020, respectively, and elimination of intersegment revenues.
Revenues net of purchased power and fuel expense (Generation):
Three Months Ended June 30, 2021Three Months Ended June 30, 2020
RNF
from external
customers(a)
Intersegment
RNF
Total RNF
RNF
from external
customers(a)
Intersegment
RNF
Total RNF
Mid-Atlantic$567 $$572 $516 $$525 
Midwest658 — 658 702 703 
New York289 292 243 246 
ERCOT80 83 92 97 
Other Power Regions157 (21)136 181 (24)157 
Total Revenues net of purchased power and fuel expense for Reportable Segments1,751 (10)1,741 1,734 (6)1,728 
Other(b)
455 10 465 204 210 
Total Generation Revenues net of purchased power and fuel expense$2,206 $— $2,206 $1,938 $— $1,938 
__________
(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 $314 million and gains of $85 million in 2021 and 2020, 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 June 30, 2021
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Rate-regulated electric revenues
Residential$759 $383 $299 $537 $223 $147 $167 
Small commercial & industrial377 99 60 124 32 46 46 
Large commercial & industrial138 59 108 257 188 22 47 
Public authorities & electric railroads11 17 10 
Other(a)
214 54 87 139 50 46 43 
Total rate-regulated electric revenues(b)
$1,499 $603 $561 $1,074 $503 $264 $307 
Rate-regulated natural gas revenues
Residential$— $55 $81 $12 $— $12 $— 
Small commercial & industrial— 22 13 — — 
Large commercial & industrial— — 27 — — 
Transportation— — — — 
Other(c)
— — — 
Total rate-regulated natural gas revenues(d)
$— $83 $127 $24 $— $24 $— 
Total rate-regulated revenues from contracts with customers$1,499 $686 $688 $1,098 $503 $288 $307 
Other revenues
Revenues from alternative revenue programs$$$(10)$41 $19 $10 $12 
Other rate-regulated electric revenues(e)
— — — 
Other rate-regulated natural gas revenues(e)
— — — — — — 
Total other revenues$18 $$(6)$42 $20 $10 $12 
Total rate-regulated revenues for reportable segments$1,517 $693 $682 $1,140 $523 $298 $319 
Three Months Ended June 30, 2020
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Rate-regulated electric revenues
Residential$767 $377 $304 $529 $237 $147 $145 
Small commercial & industrial327 88 51 105 29 39 37 
Large commercial & industrial119 55 94 240 175 22 43 
Public authorities & electric railroads11 15 
Other(a)
218 55 76 161 58 51 53 
Total rate-regulated electric revenues(b)
$1,442 $582 $532 $1,050 $507 $262 $282 
Rate-regulated natural gas revenues
Residential$— $70 $81 $17 $— $17 $— 
Small commercial & industrial— 19 12 — — 
Large commercial & industrial— — 24 — — 
Transportation— — — — 
Other(c)
— — — 
Total rate-regulated natural gas revenues(d)
$— $96 $120 $30 $— $30 $— 
Total rate-regulated revenues from contracts with customers$1,442 $678 $652 $1,080 $507 $292 $282 
Other revenues
Revenues from alternative revenue programs$(25)$$(37)$(64)$(13)$(25)$(26)
Other rate-regulated electric revenues(e)
— — — — — — 
Other rate-regulated natural gas revenues(e)
— (1)— — — — — 
Total other revenues$(25)$$(36)$(64)$(13)$(25)$(26)
Total rate-regulated revenues for reportable segments$1,417 $681 $616 $1,016 $494 $267 $256 

__________
(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.
(b)Includes operating revenues from affiliates in 2021 and 2020 respectively of:
$5 million, $11 million at ComEd
$1 million, $1 million at PECO
$4 million, $3 million at BGE
$4 million, $3 million at PHI
$1 million, $1 million at Pepco
$2 million, $2 million at DPL
$1 million, $1 million at ACE
(c)Includes revenues from off-system natural gas sales.
(d)Includes operating revenues from affiliates in 2021 and 2020 respectively of:
less than $1 million at PECO both 2021 and 2020
$3 million, $1 million at BGE
(e)Includes late payment charge revenues.
Year to Date [Member]  
Segment Tables [Line Items]  
Analysis and reconciliation of reportable segment information
Six Months Ended June 30, 2021 and 2020
GenerationComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations
Exelon
Operating revenues(b):
2021
Competitive businesses electric revenues$7,935 $— $— $— $— $— $(546)$7,389 
GenerationComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations
Exelon
Competitive businesses natural gas revenues1,833 — — — — — — 1,833 
Competitive businesses other revenues(56)— — — — — (1)(57)
Rate-regulated electric revenues— 3,052 1,271 1,190 2,283 — (21)7,775 
Rate-regulated natural gas revenues— — 311 466 95 — (7)865 
Shared service and other revenues— — — — 1,013 (1,019)— 
Total operating revenues$9,712 $3,052 $1,582 $1,656 $2,384 $1,013 $(1,594)$17,805 
2020
Competitive businesses electric revenues$7,165 $— $— $— $— $— $(594)$6,571 
Competitive businesses natural gas revenues1,025 — — — — — (3)1,022 
Competitive businesses other revenues423 — — — — — (2)421 
Rate-regulated electric revenues— 2,856 1,189 1,118 2,086 — (27)7,222 
Rate-regulated natural gas revenues— — 304 436 94 — (2)832 
Shared service and other revenues— — — — 953 (959)
Total operating revenues$8,613 $2,856 $1,493 $1,554 $2,187 $953 $(1,587)$16,069 
Intersegment revenues(c):
2021$549 $11 $$13 $$1,010 $(1,594)$— 
2020601 16 10 949 (1,585)
Depreciation and amortization:
2021$1,869 $589 $173 $293 $404 $35 $— $3,363 
2020604 547 173 272 385 42 — 2,023 
Operating expenses:
2021$11,141 $2,406 $1,231 $1,372 $2,013 $1,029 $(1,549)$17,643 
20207,947 2,497 1,242 1,263 1,955 958 (1,564)14,298 
Interest expense, net:
2021$148 $193 $80 $67 $134 $161 $— $783 
2020197 192 71 64 134 179 — 837 
GenerationComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations
Exelon
Income (loss) before income taxes:
2021$(823)$475 $283 $233 $273 $(174)$$268 
2020313 189 187 237 126 (175)879 
Income Taxes:
2021$(70)$85 $12 $(21)$$44 $— $55 
2020(59)82 18 (76)(49)— (75)
Net income (loss):
2021$(756)$390 $271 $254 $269 $(218)$$211 
2020368 107 178 219 202 (126)950 
Capital Expenditures:
2021$719 $1,162 $577 $620 $889 $73 $— $4,040 
2020930 1,029 512 548 686 68 — 3,773 
Total assets:
June 30, 2021$45,821 $35,324 $13,491 $12,186 $24,235 $8,507 $(10,168)$129,396 
December 31, 202048,094 34,466 12,531 11,650 23,736 9,005 (10,165)129,317 
__________
(a)Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities.
(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 18 — Supplemental Financial Information for additional information on total utility taxes.
(c)Intersegment revenues exclude sales to unconsolidated affiliates. The intersegment profit associated with Generation’s sale of certain products and services by and between Exelon’s segments is not eliminated in consolidation due to the recognition of intersegment profit in accordance with regulatory accounting guidance. For Exelon, these amounts are included in Operating revenues in the Consolidated Statements of Operations and Comprehensive Income. See Note 19 — Related Party Transactions for additional information on intersegment revenues.
PHI:
PepcoDPLACE
Other(a)
Intersegment
Eliminations
PHI
Operating revenues(b):
2021
Rate-regulated electric revenues$1,076 $585 $629 $— $(7)$2,283 
Rate-regulated natural gas revenues— 95 — — — 95 
Shared service and other revenues— — — 189 (183)
Total operating revenues$1,076 $680 $629 $189 $(190)$2,384 
2020
Rate-regulated electric revenues$1,039 $523 $532 $— $(8)$2,086 
Rate-regulated natural gas revenues— 94 — — — 94 
Shared service and other revenues— — — 189 (182)
Total operating revenues$1,039 $617 $532 $189 $(190)$2,187 
Intersegment revenues(c):
2021$$$$189 $(190)$
2020189 (190)
Depreciation and amortization:
2021$199 $104 $87 $14 $— $404 
2020186 94 86 19 — 385 
Operating expenses:
2021$895 $564 $552 $192 $(190)$2,013 
2020899 547 509 190 (190)1,955 
Interest expense, net:
2021$69 $30 $29 $$— $134 
202068 31 29 — 134 
Income (loss) before income taxes:
2021$137 $92 $50 $(6)$— $273 
202090 44 (1)(7)— 126 
Income Taxes:
2021$$$(1)$(3)$— $
2020(19)(20)(32)(5)— (76)
Net income (loss):
2021$134 $86 $51 $(2)$— $269 
2020109 64 31 (2)— 202 
Capital Expenditures:
2021$439 $211 $239 $— $— $889 
2020324 184 178 — — 686 
Total assets:
June 30, 2021$9,588 $5,229 $4,473 $5,014 $(69)$24,235 
December 31, 20209,264 5,140 4,286 5,079 (33)23,736 
__________
(a)Other primarily includes PHI’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 18 — Supplemental Financial Information for additional information on total utility taxes.
(c)Includes intersegment revenues with ComEd, BGE, and PECO, which are eliminated at Exelon.
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):
Six Months Ended June 30, 2021
Revenues from external customers(a)
Intersegment
Revenues
Total
Revenues
Contracts with customers
Other(b)
Total
Mid-Atlantic$2,233 $11 $2,244 $11 $2,255 
Midwest1,983 (24)1,959 1,960 
New York759 (40)719 — 719 
ERCOT533 (10)523 532 
Other Power Regions2,095 395 2,490 (21)2,469 
Total Competitive Businesses Electric Revenues 7,603 332 7,935 — 7,935 
Competitive Businesses Natural Gas Revenues1,117 716 1,833 — 1,833 
Competitive Businesses Other Revenues(c)
195 (251)(56)— (56)
Total Generation Consolidated Operating Revenues$8,915 $797 $9,712 $— $9,712 
Six Months Ended June 30, 2020
Revenues from external customers(a)
Intersegment
revenues
Total
Revenues
Contracts with customers
Other(b)
Total
Mid-Atlantic$2,365 $(133)$2,232 $15 $2,247 
Midwest1,798 172 1,970 (6)1,964 
New York672 (16)656 (1)655 
ERCOT330 81 411 13 424 
Other Power Regions1,782 114 1,896 (21)1,875 
Total Competitive Businesses Electric Revenues 6,947 218 7,165 — 7,165 
Competitive Businesses Natural Gas Revenues712 313 1,025 — 1,025 
Competitive Businesses Other Revenues(c)
185 238 423 — 423 
Total Generation Consolidated Operating Revenues$7,844 $769 $8,613 $— $8,613 
__________
(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 losses of $323 million and gains of $200 million in 2021 and 2020, respectively, and elimination of intersegment revenues.
Revenues net of purchased power and fuel expense (Generation):
Six Months Ended June 30, 2021Six Months Ended June 30, 2020
RNF
from external
customers(a)
Intersegment
RNF
Total RNF
RNF
from external
customers(a)
Intersegment
RNF
Total RNF
Mid-Atlantic$1,130 $11 $1,141 $1,074 $18 $1,092 
Midwest1,359 1,360 1,431 (4)1,427 
New York531 536 433 440 
ERCOT(957)(145)(1,102)168 177 
Other Power Regions409 (56)353 355 (43)312 
Total Revenues net of purchased power and fuel expense for Reportable Segments2,472 (184)2,288 3,461 (13)3,448 
Other(b)
683 184 867 506 13 519 
Total Generation Revenues net of purchased power and fuel expense$3,155 $— $3,155 $3,967 $— $3,967 
__________
(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. Primarily includes:
unrealized mark-to-market gains of $489 million and gains of $218 million in 2021 and 2020, respectively;
accelerated nuclear fuel amortization associated with announced early plant retirements as discussed in Note 7 - Early Plant Retirements of $106 million in 2021; 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):
Six Months Ended June 30, 2021
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Rate-regulated electric revenues
Residential$1,502 $816 $662 $1,142 $476 $337 $329 
Small commercial & industrial744 199 129 242 65 92 85 
Large commercial & industrial271 116 213 505 372 43 90 
Public authorities & electric railroads22 17 13 30 16 
Other(a)
433 106 165 283 101 87 95 
Total rate-regulated electric revenues(b)
$2,972 $1,254 $1,182 $2,202 $1,030 $566 $606 
Rate-regulated natural gas revenues
Residential$— $215 $297 $57 $— $57 $— 
Small commercial & industrial— 81 48 24 — 24 — 
Large commercial & industrial— — 81 — — 
Transportation— 12 — — — 
Other(c)
— 36 — — 
Total rate-regulated natural gas revenues(d)
$— $311 $462 $94 $— $95 $— 
Total rate-regulated revenues from contracts with customers$2,972 $1,565 $1,644 $2,296 $1,030 $661 $606 
Other revenues
Revenues from alternative revenue programs$64 $17 $$88 $46 $19 $23 
Other rate-regulated electric revenues(e)
16 — — — — — 
Other rate-regulated natural gas revenues(e)
— — — — — — 
Total other revenues$80 $17 $12 $88 $46 $19 $23 
Total rate-regulated revenues for reportable segments$3,052 $1,582 $1,656 $2,384 $1,076 $680 $629 
Six Months Ended June 30, 2020
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Rate-regulated electric revenues
Residential$1,468 $759 $644 $1,062 $472 $308 $282 
Small commercial & industrial689 187 118 221 65 82 74 
Large commercial & industrial253 108 198 493 363 45 85 
Public authorities & electric railroads23 14 14 30 17 
Other(a)
430 113 154 333 119 105 109 
Total rate-regulated electric revenues(b)
$2,863 $1,181 $1,128 $2,139 $1,036 $546 $557 
Rate-regulated natural gas revenues
Residential$— $220 $287 $57 $— $57 $— 
Small commercial & industrial— 70 46 25 — 25 — 
Large commercial & industrial— — 76 — — 
Transportation— 12 — — — 
Other(c)
— 13 — — 
Total rate-regulated natural gas revenues(d)
$— $304 $422 $94 $— $94 $— 
Total rate-regulated revenues from contracts with customers$2,863 $1,485 $1,550 $2,233 $1,036 $640 $557 
Other revenues
Revenues from alternative revenue programs$(13)$$— $(47)$$(24)$(25)
Other rate-regulated electric revenues(e)
— 
Other rate-regulated natural gas revenues(e)
— — — — — — 
Total other revenues$(7)$$$(46)$$(23)$(25)
Total rate-regulated revenues for reportable segments$2,856 $1,493 $1,554 $2,187 $1,039 $617 $532 
__________
(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.
(b)Includes operating revenues from affiliates in 2021 and 2020 respectively of:
$11 million, $16 million at ComEd
$3 million, $3 million at PECO
$5 million, $6 million at BGE
$7 million, $7 million at PHI
$3 million, $3 million at Pepco
$4 million, $4 million at DPL
$1 million, $1 million at ACE
(c)Includes revenues from off-system natural gas sales.
(d)Includes operating revenues from affiliates in 2021 and 2020 respectively of:
$1 million, less than $1 million at PECO
$7 million, $4 million at BGE
(e)Includes late payment charge revenues.