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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2018
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions [Table Text Block] | The financial statements of PECO include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
Generation (a) | $ | 2 |  |  | $ | 1 |  |  | $ | 3 |
BSC | 3 |  |  | 5 |  |  | 3 |
ComEd | 1 |  |  | — |  |  | 1 |
BGE | 1 |  |  | 1 |  |  | 1 |
ACE | 1 |  |  | — |  |  | — |
Total operating revenues from affiliates | $ | 8 |  |  | $ | 7 |  |  | $ | 8 |
Purchased power from affiliates |  |  |  |  |
Generation (b) | $ | 126 |  |  | $ | 135 |  |  | $ | 287 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (c) | $ | 146 |  |  | $ | 146 |  |  | $ | 142 |
Generation | 2 |  |  | 2 |  |  | 2 |
ComEd | 7 |  |  | — |  |  | 1 |
BGE | 1 |  |  | 1 |  |  | 1 |
Total operating and maintenance from affiliates | $ | 156 |  |  | $ | 149 |  |  | $ | 146 |
Interest expense to affiliates, net: |  |  |  |  |
PECO Trust III | $ | 6 |  |  | $ | 6 |  |  | $ | 6 |
PECO Trust IV | 6 |  |  | 6 |  |  | 6 |
Exelon Corporate | 2 |  |  | — |  |  | — |
Generation | — |  |  | (1 | ) |  | — |
Total interest expense to affiliates, net: | $ | 14 |  |  | $ | 11 |  |  | $ | 12 |
Capitalized costs |  |  |  |  |
BSC (c) | $ | 64 |  |  | $ | 59 |  |  | $ | 57 |
Cash dividends paid to parent | $ | 306 |  |  | $ | 288 |  |  | $ | 277 |
Contributions from parent | $ | 89 |  |  | $ | 16 |  |  | $ | 18 |
PHI The financial statements of PHI include related party transactions as presented in the tables below:
| Successor
| For the Year Ended December 31, |  | For the Year Ended December 31, |  | March 24, 2016 to December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
BSC | $ | 12 |  |  | $ | 48 |  |  | $ | 44 |
PHISCO | 1 |  |  | 2 |  |  | — |
Generation | 2 |  |  | — |  |  | 1 |
Total operating revenues from affiliates | $ | 15 |  |  | $ | 50 |  |  | $ | 45 |
Purchased power from affiliates |  |  |  |  |
Generation | $ | 355 |  |  | $ | 463 |  |  | $ | 486 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (a) | $ | 147 |  |  | $ | 145 |  |  | $ | 86 |
Other | 5 |  |  | 5 |  |  | 3 |
Total operating and maintenance from affiliates | $ | 152 |  |  | $ | 150 |  |  | $ | 89 |
Earnings (losses) in equity method investments: |  |  |  |  |
Other | $ | 1 |  |  | $ | — |  |  | $ | — |
Capitalized costs: |  |  |  |  |
BSC (a) | $ | 102 |  |  | $ | — |  |  | $ | — |
PHISCO (a) | 79 |  |  | — |  |  | — |
Total capitalized costs | $ | 181 |  |  | $ | — |  |  | $ | — |
Cash dividends paid to parent | $ | 326 |  |  | $ | 311 |  |  | $ | 273 |
Contributions from parent | $ | 385 |  |  | $ | 758 |  |  | $ | 1,251 |
| December 31,
| 2018 |  | 2017
Receivables from affiliates (current): |  |  |
ComEd (a) | $ | 69 |  |  | $ | 28 |
PECO (b) | 30 |  |  | 26 |
BGE (c) | 24 |  |  | 24 |
Pepco (d) | 28 |  |  | 36 |
DPL (e) | 7 |  |  | 12 |
ACE (f) | 5 |  |  | 6 |
PHISCO (h) | — |  |  | 1 |
Other | 10 |  |  | 7 |
Total receivables from affiliates (current) | $ | 173 |  |  | $ | 140 |
Intercompany money pool (current): |  |  |
Exelon Corporate | $ | 100 |  |  | $ | — |
PCI | — |  |  | 54 |
Total intercompany money pool (current) | $ | 100 |  |  | $ | 54 |
Payables to affiliates (current): |  |  |
Exelon Corporate (i) | $ | 17 |  |  | $ | 21 |
BSC (h) | 95 |  |  | 74 |
ComEd | 19 |  |  | 12 |
PECO (b) | — |  |  | 4 |
Other | 8 |  |  | 12 |
Total payables to affiliates (current) | $ | 139 |  |  | $ | 123 |
Other liabilities to affiliates (current): |  |  |
ComEd (a) | $ | 14 |  |  | $ | — |
Long-term debt to affiliates (noncurrent): |  |  |
Exelon Corporate (k) | $ | 898 |  |  | $ | 910 |
Payables to affiliates (noncurrent): |  |  |
ComEd (j) | $ | 2,217 |  |  | $ | 2,528 |
PECO (j) | 389 |  |  | 537 |
Total payables to affiliates (noncurrent) | $ | 2,606 |  |  | $ | 3,065 |
__________
(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) | 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.
(c) | Generation provides a portion of BGE’s energy requirements under its MDPSC-approved market-based SOS and gas commodity programs.
(d) | Generation provides electric supply to Pepco under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC.
(e) | Generation provides a portion of DPL's energy requirements under its MDPSC and DPSC approved market based SOS and gas commodity programs.
(f) | Generation provides electric supply to ACE under contracts executed through ACE's competitive procurement process.
(g) | Generation requires electricity for its own use at its generating stations. Generation purchases electricity and distribution and transmission services from PECO and BGE and only distribution and transmission services from ComEd for the delivery of electricity to its generating stations.
(h) | Generation receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
(i) | The balance consists of interest owed to Exelon Corporation related to the senior unsecured notes, as well as, expense related to certain invoices Exelon Corporation processed on behalf of Generation.
(j) | 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 15—Asset Retirement Obligations for additional information.
(k) | 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, which are eliminated in consolidation in Exelon’s Consolidated Balance Sheets.
| December 31,
| 2018 |  | 2017
Prepaid voluntary employee beneficiary association trust (c) | $ | 5 |  |  | $ | 2 |
Receivables from affiliates (current): |  |  |
Voluntary employee beneficiary association trust | $ | 1 |  |  | $ | 1 |
Generation | 19 |  |  | 12 |
Total receivables from affiliates (current) | $ | 20 |  |  | $ | 13 |
Receivables from affiliates (noncurrent): |  |  |
Generation (d) | $ | 2,217 |  |  | $ | 2,528 |
Payables to affiliates (current): |  |  |
Generation (a) | $ | 55 |  |  | $ | 28 |
BSC (b) | 56 |  |  | 39 |
ComEd Financing III | 4 |  |  | 4 |
Exelon Corporate | 4 |  |  | 3 |
Total payables to affiliates (current) | $ | 119 |  |  | $ | 74 |
Long-term debt to ComEd financing trust: |  |  |
ComEd Financing III | $ | 205 |  |  | $ | 205 |
__________
(a) | ComEd procures a portion of its electricity supply requirements from Generation under an ICC-approved RFP contract. ComEd also purchases RECs and ZECs from Generation.
(b) | ComEd receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
(c) | The voluntary employee benefit association trusts covering active employees are included in corporate operations and are funded by the Registrants. A prepayment to the active welfare plans has accumulated due to actuarially determined contribution rates, which are the basis for ComEd’s contributions to the plans, being higher than actual claim expense incurred by the plans over time. The prepayment is included in other current assets.
(d) | ComEd has a long-term receivable from Generation as a result of the nuclear decommissioning contractual construct for generating facilities previously owned by ComEd. To the extent the assets associated with decommissioning are greater than the applicable ARO at the end of decommissioning, such amounts are due back to ComEd for payment to ComEd’s customers.
| December 31,
| 2018 |  | 2017
Receivables from affiliates (current): |  |  |
DPL | $ | 1 |  |  | $ | — |
Payables to affiliates (current): |  |  |
Exelon Corporation | $ | 1 |  |  | $ | — |
Generation (b) | 28 |  |  | 36 |
BSC (c) | 19 |  |  | 11 |
PHISCO (c) | 14 |  |  | 27 |
Total payables to affiliates (current) | $ | 62 |  |  | $ | 74 |
__________
(a) | Pepco provides energy to Generation for Generation’s own use.
(b) | Pepco procures a portion of its electricity supply requirements from Generation under its MDPSC and DCPSC approved market based SOS commodity programs.
(c) | Pepco receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
(d) | PES performed underground transmission, distribution construction and maintenance services, including services that are treated as capital costs, for Pepco.
The financial statements of DPL include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
BSC | $ | 1 |  |  | $ | — |  |  | $ | — |
PHISCO | 4 |  |  | 6 |  |  | 5 |
ComEd | 1 |  |  | — |  |  | — |
ACE | 1 |  |  | — |  |  | — |
Other | 1 |  |  | 2 |  |  | 2 |
Total operating revenues from affiliates | $ | 8 |  |  | $ | 8 |  |  | $ | 7 |
Purchased power from affiliates |  |  |  |  |
Generation (a) | $ | 120 |  |  | $ | 179 |  |  | $ | 154 |
Operating and maintenance: |  |  |  |  |
PHISCO (b), (d) | $ | — |  |  | $ | 165 |  |  | $ | 194 |
PES (c) | — |  |  | 9 |  |  | 8 |
Total operating and maintenance | $ | — |  |  | $ | 174 |  |  | $ | 202 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (b) | $ | 51 |  |  | $ | 31 |  |  | $ | 18 |
PHISCO (b), (d) | 111 |  |  | — |  |  | — |
Other | — |  |  | 1 |  |  | 1 |
Total operating and maintenance from affiliates | $ | 162 |  |  | $ | 32 |  |  | $ | 19 |
Capitalized costs: |  |  |  |  |
BSC (b) | $ | 28 |  |  | $ | — |  |  | $ | — |
PHISCO (b) | 25 |  |  | — |  |  | — |
Total capitalized costs | $ | 53 |  |  | $ | — |  |  | $ | — |
Cash dividends paid to parent | $ | 96 |  |  | $ | 112 |  |  | $ | 54 |
Contributions from parent | $ | 150 |  |  | $ | — |  |  | $ | 152 |
| December 31,
| 2018 |  | 2017
Payables to affiliates (current): |  |  |
Generation | $ | 40 |  |  | $ | 54 |
BGE | — |  |  | 1 |
BSC(a) | 41 |  |  | 24 |
Exelon Corporate | 6 |  |  | 6 |
Other | 7 |  |  | 5 |
Total payables to affiliates (current) | $ | 94 |  |  | $ | 90 |
__________
(a) | PHI receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
| December 31,
| 2018 |  | 2017
Payables to affiliates (current): |  |  |
Exelon Corporate | $ | 1 |  |  | $ | — |
Generation (a) | 7 |  |  | 12 |
BSC (b) | 11 |  |  | 7 |
PHISCO (b) | 12 |  |  | 27 |
Pepco | 1 |  |  | — |
ACE | 1 |  |  | — |
Total payables to affiliates (current) | $ | 33 |  |  | $ | 46 |
The financial statements of ComEd include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates |  |  |  |  |
Generation | $ | 9 |  |  | $ | 9 |  |  | $ | 7 |
BSC | 7 |  |  | 6 |  |  | 6 |
PECO | 10 |  |  | — |  |  | 1 |
BGE | 1 |  |  | — |  |  | 1 |
Total operating revenues from affiliates | $ | 27 |  |  | $ | 15 |  |  | $ | 15 |
Purchased power from affiliates |  |  |  |  |
Generation (a) | $ | 529 |  |  | $ | 108 |  |  | $ | 47 |
Operating and maintenance from affiliates |  |  |  |  |
BSC (b) | $ | 265 |  |  | $ | 270 |  |  | $ | 225 |
PECO | 1 |  |  | — |  |  | 1 |
BGE | 1 |  |  | — |  |  | 1 |
Total operating and maintenance from affiliates | $ | 267 |  |  | $ | 270 |  |  | $ | 227 |
Interest expense to affiliates, net: |  |  |  |  |
ComEd Financing III | $ | 13 |  |  | $ | 13 |  |  | $ | 13 |
Capitalized costs |  |  |  |  |
BSC (b) | $ | 135 |  |  | $ | 118 |  |  | $ | 112 |
Cash dividends paid to parent | $ | 459 |  |  | $ | 422 |  |  | $ | 369 |
Contributions from parent | $ | 500 |  |  | $ | 651 |  |  | $ | 315 |
| December 31,
| 2018 |  | 2017
Prepaid voluntary employee beneficiary association trust (d) | $ | 1 |  |  | $ | — |
Receivables from affiliates (noncurrent): |  |  |
Generation (e) | $ | 389 |  |  | $ | 537 |
Payables to affiliates (current): |  |  |
Generation (b) | $ | 30 |  |  | $ | 22 |
BSC (c) | 26 |  |  | 29 |
Exelon Corporate | 2 |  |  | 1 |
PECO Trust III | 1 |  |  | 1 |
Total payables to affiliates (current) | $ | 59 |  |  | $ | 53 |
Long-term debt to financing trusts: |  |  |
PECO Trust III | $ | 81 |  |  | $ | 81 |
PECO Trust IV | 103 |  |  | 103 |
Total long-term debt to financing trusts | $ | 184 |  |  | $ | 184 |
__________
(a) | PECO provides energy to Generation for Generation’s own use.
(b) | PECO purchases electric supply from Generation under contracts executed through its competitive procurement process. In addition, PECO has five-year and ten-year agreements with Generation to purchase non-solar and solar AECs, respectively.
(c) | PECO receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
(d) | The voluntary employee beneficiary association trusts covering active employees are included in corporate operations and are funded by the Registrants. A prepayment to the active welfare plans has accumulated due to actuarially determined contribution rates, which are the basis for PECO’s contributions to the plans, being higher than actual claim expense incurred by the plans over time.
(e) | PECO has a long-term receivable from Generation as a result of the nuclear decommissioning contractual construct, whereby, to the extent the assets associated with decommissioning are greater than the applicable ARO at the end of decommissioning, such amounts are due back to PECO for payment to PECO’s customers.
The financial statements of BGE include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
Generation (a) | $ | 22 |  |  | $ | 10 |  |  | $ | 13 |
BSC | 5 |  |  | 5 |  |  | 6 |
ComEd | 1 |  |  | — |  |  | 1 |
PECO | 1 |  |  | 1 |  |  | 1 |
Total operating revenues from affiliates | $ | 29 |  |  | $ | 16 |  |  | $ | 21 |
Purchased power from affiliates |  |  |  |  |
Generation (b) | $ | 257 |  |  | $ | 384 |  |  | $ | 604 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (c) | $ | 157 |  |  | $ | 152 |  |  | $ | 130 |
Generation | 3 |  |  | — |  |  | — |
ComEd | 1 |  |  | — |  |  | 1 |
PECO | 1 |  |  | 1 |  |  | 1 |
Total operating and maintenance from affiliates | $ | 162 |  |  | $ | 153 |  |  | $ | 132 |
Interest expense to affiliates, net: |  |  |  |  |
BGE Capital Trust II | $ | — |  |  | $ | 10 |  |  | $ | 16 |
Capitalized costs |  |  |  |  |
BSC (c) | $ | 79 |  |  | $ | 54 |  |  | $ | 36 |
Cash dividends paid to parent | $ | 209 |  |  | $ | 198 |  |  | $ | 179 |
Contributions from parent | $ | 109 |  |  | $ | 184 |  |  | $ | 61 |
| December 31,
| 2018 |  | 2017
Receivables from affiliates (current): |  |  |
Other | $ | 1 |  |  | $ | 1 |
Payables to affiliates (current): |  |  |
Generation (b) | $ | 24 |  |  | $ | 24 |
BSC (c) | 38 |  |  | 25 |
Exelon Corporate | 2 |  |  | 1 |
Other | 1 |  |  | 2 |
Total payables to affiliates (current) | $ | 65 |  |  | $ | 52 |
__________
(a) | BGE provides energy to Generation for Generation’s own use.
(b) | BGE procures a portion of its electricity and gas supply requirements from Generation under its MDPSC-approved market-based SOS and gas commodity programs.
(c) | BGE receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
The financial statements of Generation include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
ComEd (a) | $ | 523 |  |  | $ | 121 |  |  | $ | 47 |
PECO (b) | 128 |  |  | 138 |  |  | 290 |
BGE (c) | 260 |  |  | 388 |  |  | 608 |
Pepco (d) | 206 |  |  | 255 |  |  | 295 |
DPL (e) | 120 |  |  | 179 |  |  | 154 |
ACE (f) | 29 |  |  | 29 |  |  | 37 |
BSC | 2 |  |  | 1 |  |  | 2 |
Other | — |  |  | 4 |  |  | 6 |
Total operating revenues from affiliates | $ | 1,268 |  |  | $ | 1,115 |  |  | $ | 1,439 |
Purchased power and fuel from affiliates: |  |  |  |  |
ComEd | $ | (6 | ) |  | $ | 13 |  |  | $ | — |
BGE | 20 |  |  | 9 |  |  | 12 |
Other | — |  |  | (3 | ) |  | — |
Total purchased power and fuel from affiliates | $ | 14 |  |  | $ | 19 |  |  | $ | 12 |
Operating and maintenance from affiliates: |  |  |  |  |
ComEd (g) | $ | 7 |  |  | $ | 7 |  |  | $ | 7 |
PECO (g) | 2 |  |  | 1 |  |  | 3 |
BGE (g) | 2 |  |  | 1 |  |  | 1 |
Pepco | 1 |  |  | — |  |  | 1 |
PHISCO | 1 |  |  | 1 |  |  | 1 |
BSC (h) | 652 |  |  | 689 |  |  | 650 |
Other | (4 | ) |  | (2 | ) |  | — |
Total operating and maintenance from affiliates | $ | 661 |  |  | $ | 697 |  |  | $ | 663 |
Interest expense to affiliates, net: |  |  |  |  |
Exelon Corporate (i) | $ | 36 |  |  | $ | 37 |  |  | $ | 39 |
PCI | — |  |  | 1 |  |  | — |
PECO | — |  |  | 1 |  |  | — |
Total interest expense to affiliates, net: | $ | 36 |  |  | $ | 39 |  |  | $ | 39 |
Earnings (losses) in equity method investments |  |  |  |  |
Qualifying facilities and domestic power projects | $ | (30 | ) |  | $ | (33 | ) |  | $ | (25 | )
Capitalized costs |  |  |  |  |
BSC (h) | $ | 67 |  |  | $ | 98 |  |  | $ | 98 |
Cash distributions paid to member | $ | 1,001 |  |  | $ | 659 |  |  | $ | 922 |
Contributions from member | $ | 155 |  |  | $ | 102 |  |  | $ | 142 |
| December 31,
| 2018 |  | 2017
Payables to affiliates (current): |  |  |
ComEd Financing III | $ | 4 |  |  | $ | 4 |
PECO Trust III | 1 |  |  | 1 |
Total payables to affiliates (current) | $ | 5 |  |  | $ | 5 |
Long-term debt to financing trusts: |  |  |
ComEd Financing III | $ | 206 |  |  | $ | 205 |
PECO Trust III | 81 |  |  | 81 |
PECO Trust IV | 103 |  |  | 103 |
Total long-term debt to financing trusts | $ | 390 |  |  | $ | 389 |
__________
(a) | The intersegment profit associated with the 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 authoritative guidance. For Exelon, these amounts are included in operating revenues in the Consolidated Statements of Operations. See Note 4—Regulatory Matters for additional information.
The financial statements of Pepco include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
Generation (a) | $ | 1 |  |  | $ | — |  |  | $ | 1 |
BSC | 1 |  |  | — |  |  | — |
PHISCO | 4 |  |  | 6 |  |  | 4 |
Total operating revenues from affiliates | $ | 6 |  |  | $ | 6 |  |  | $ | 5 |
Purchased power from affiliates |  |  |  |  |
Generation (b) | $ | 206 |  |  | $ | 255 |  |  | $ | 295 |
Operating and maintenance: |  |  |  |  |
PHISCO (c), (e) | $ | — |  |  | $ | 219 |  |  | $ | 263 |
PES (d) | — |  |  | 29 |  |  | 39 |
Total operating and maintenance | $ | — |  |  | $ | 248 |  |  | $ | 302 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (c) | $ | 89 |  |  | $ | 53 |  |  | $ | 31 |
PHISCO (c), (e) | 137 |  |  | 5 |  |  | 4 |
Total operating and maintenance from affiliates | $ | 226 |  |  | $ | 58 |  |  | $ | 35 |
Capitalized costs: |  |  |  |  |
BSC (c) | $ | 40 |  |  | $ | — |  |  | $ | — |
PHISCO (c) | 32 |  |  | — |  |  | — |
Total capitalized costs | $ | 72 |  |  | $ | — |  |  | $ | — |
Cash dividends paid to parent | $ | 169 |  |  | $ | 133 |  |  | $ | 136 |
Contributions from parent | $ | 166 |  |  | $ | 161 |  |  | $ | 187 |
The financial statements of Exelon include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
Generation (a) | (2 | ) |  | — |  |  |  |
PECO (a) | — |  |  | 1 |  |  | 1 |
BGE (a) | — |  |  | 4 |  |  | 4 |
ACE (a) | — |  |  | — |  |  | — |
Other | 1 |  |  | 2 |  |  | 5 |
Total operating revenues from affiliates | $ | (1 | ) |  | $ | 7 |  |  | $ | 10 |
Interest expense to affiliates, net: |  |  |  |  |
ComEd Financing III | $ | 13 |  |  | $ | 14 |  |  | $ | 13 |
PECO Trust III | 6 |  |  | 6 |  |  | 6 |
PECO Trust IV | 6 |  |  | 6 |  |  | 6 |
BGE Capital Trust II | — |  |  | 10 |  |  | 16 |
Total interest expense to affiliates, net | $ | 25 |  |  | $ | 36 |  |  | $ | 41 |
Earnings (losses) in equity method investments: |  |  |  |  |
Qualifying facilities and domestic power projects | $ | (29 | ) |  | $ | (33 | ) |  | $ | (25 | )
Other | 1 |  |  | 1 |  |  | 1 |
Total losses in equity method investments | $ | (28 | ) |  | $ | (32 | ) |  | $ | (24 | )
ACE The financial statements of ACE include related party transactions as presented in the tables below:
| For the Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Operating revenues from affiliates: |  |  |  |  |
PHISCO | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |
Other | 1 |  |  | 1 |  |  | 1 |
Total operating revenues from affiliates | $ | 3 |  |  | $ | 2 |  |  | $ | 3 |
Purchased power from affiliates |  |  |  |  |
Generation (a) | $ | 29 |  |  | $ | 29 |  |  | $ | 37 |
Operating and maintenance: |  |  |  |  |
PHISCO (b), (c) | $ | — |  |  | $ | 135 |  |  | $ | 155 |
Operating and maintenance from affiliates: |  |  |  |  |
BSC (b) | $ | 42 |  |  | $ | 25 |  |  | $ | 15 |
PHISCO (b), (c) | 98 |  |  | — |  |  | — |
Other | 2 |  |  | 3 |  |  | 3 |
Total operating and maintenance from affiliates | $ | 142 |  |  | $ | 28 |  |  | $ | 18 |
Capitalized costs: |  |  |  |  |
BSC (b) | $ | 20 |  |  | $ | — |  |  | $ | — |
PHISCO (b) | 21 |  |  | — |  |  | — |
Total capitalized costs | $ | 41 |  |  | $ | — |  |  | $ | — |
Cash dividends paid to parent | $ | 59 |  |  | $ | 68 |  |  | $ | 63 |
Contributions from parent | $ | 67 |  |  | $ | — |  |  | $ | 139 |
| December 31,
| 2018 |  | 2017
Receivable from affiliate (current): |  |  |
DPL | $ | 1 |  |  | $ | — |
Payables to affiliates (current): |  |  |
Generation (a) | $ | 5 |  |  | $ | 6 |
BSC (b) | 8 |  |  | 5 |
PHISCO (b) | 13 |  |  | 18 |
Other | 2 |  |  | — |
Total payables to affiliates (current) | $ | 28 |  |  | $ | 29 |
__________
(a) | ACE purchases electric supply from Generation under contracts executed through its competitive procurement process.
(b) | ACE receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
(c) | Due to the PHI entities' system conversion to Exelon's accounting systems on January 1, 2018, corporate support services received from PHISCO are reported in Operating and maintenance from affiliates in 2018.

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