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Jointly Owned Electric Utility Plant (Exelon, Generation, PECO, BGE, PHI, Pepco, DPL and ACE) | 12 Months Ended
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Dec. 31, 2018
Public Utilities, Property, Plant and Equipment [Abstract] |
Jointly Owned Electric Utility Plant | Jointly Owned Electric Utility Plant (Exelon, Generation, PECO, BGE, PHI, Pepco, DPL and ACE) Exelon's, Generation's, PECO's, BGE's, Pepco's, DPL's and ACE's undivided ownership interests in jointly owned electric plants and transmission facilities at December 31, 2018 and 2017 were as follows:
| Nuclear Generation |  | Fossil-Fuel Generation |  | Transmission |  | Other
| Quad Cities |  | Peach Bottom |  | Salem(a) |  | Nine Mile Point Unit 2 |  | Wyman |  | PA(b) |  | NJ/ DE(c) |  | Other(d)
Operator | Generation |  | Generation |  | PSEG Nuclear |  | Generation |  | FP&L |  | First Energy |  | PSEG/ DPL |  | various
Ownership interest | 75.00 | % |  | 50.00 | % |  | 42.59 | % |  | 82.00 | % |  | 5.89 | % |  | various |  |  | various |  |  | various |
Exelon’s share at December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant(e) | $ | 1,131 |  |  | $ | 1,451 |  |  | $ | 648 |  |  | $ | 910 |  |  | $ | 4 |  |  | $ | 28 |  |  | $ | 103 |  |  | $ | 15 |
Accumulated depreciation(e) | 587 |  |  | 523 |  |  | 227 |  |  | 126 |  |  | 3 |  |  | 16 |  |  | 53 |  |  | 13 |
Construction work in progress | 13 |  |  | 15 |  |  | 44 |  |  | 56 |  |  | — |  |  | 1 |  |  | — |  |  | — |
Exelon’s share at December 31, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant(e) | $ | 1,074 |  |  | $ | 1,417 |  |  | $ | 631 |  |  | $ | 839 |  |  | $ | 3 |  |  | $ | 27 |  |  | $ | 102 |  |  | $ | 15 |
Accumulated depreciation(e) | 550 |  |  | 461 |  |  | 205 |  |  | 97 |  |  | 3 |  |  | 15 |  |  | 52 |  |  | 13 |
Construction work in progress | 35 |  |  | 18 |  |  | 33 |  |  | 55 |  |  | — |  |  | — |  |  | — |  |  | — |
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(a) | Generation also owns a proportionate share in the fossil-fuel combustion turbine at Salem, which is fully depreciated. The gross book value was $3 million at December 31, 2018 and 2017.
(b) | PECO, BGE, Pepco, DPL and ACE own a 22%, 7%, 27%, 9% and 8% share, respectively, in 127 miles of 500 kV lines located in Pennsylvania as well as a 20.72%, 10.56%, 9.72%, 3.72% and 3.83% share, respectively, of a 500 kV substation immediately outside of the Conemaugh fossil-generating station which supplies power to the 500 kV lines including, but not limited to, the lines noted above.
(c) | PECO, DPL and ACE own a 42.55%, 1% and 13.9% share, respectively in 151.3 miles of 500 kV lines located in New Jersey and of the Salem generating plant substation. PECO, DPL and ACE also own a 42.55%, 7.45% and 7.45% share, respectively, in 2.5 miles of 500 kV line located over the Delaware River. ACE also has a 21.78% share in a 500 kV New Freedom Switching substation.
(d) | Generation, DPL and ACE own a 44.24%, 11.91% and 4.83% share, respectively in assets located at Merrill Creek Reservoir located in New Jersey. Pepco, DPL and ACE own a 11.9%, 7.4% and 6.6% share, respectively, in Valley Forge Corporate Center.
(e) | Excludes asset retirement costs and general plant.
Exelon’s, Generation’s, PECO's, BGE's, Pepco's, DPL's and ACE's undivided ownership interests are financed with their funds and all operations are accounted for as if such participating interests were wholly owned facilities. Exelon’s, Generation’s, PECO's, BGE's, Pepco's, DPL's and ACE's share of direct expenses of the jointly owned plants are included in Purchased power and fuel and Operating and maintenance expenses in Exelon’s and Generation’s Consolidated Statements of Operations and Comprehensive Income and in Operating and maintenance expenses in PECO's, BGE's, Pepco's, DPL's and ACE's Consolidated Statements of Operations and Comprehensive Income.

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- Definition Describes that the entity has a proportionate interest in a jointly owned utility plant. Should include a table showing separately for each interest the amount of plant in service, the accumulated provision for depreciation (if available), the amount of plant under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Should include statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. Should state that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power then should disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants + References No definition available. + Details
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- References No definition available. + Details
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