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Joint Ownership of Generating and Transmission Facilities (Tables)
12 Months Ended
Dec. 31, 2017
Jointly Owned Utility Plant Interests [Line Items]  
Schedule Joint Ownership of Generating and Transmission Facilities
The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the Electric Utilities and Infrastructure segment.
 
December 31, 2017
 
 
 
 
 
 
 
Construction

 
Ownership

 
Property, Plant

 
Accumulated

 
Work in

(in millions except for ownership interest)
Interest

 
and Equipment

 
Depreciation

 
Progress

Duke Energy Carolinas
 

 
 
 
 
 
 
Catawba Nuclear Station (units 1 and 2)(a)
19.25
%
 
$
927

 
$
651

 
$
19

Lee Combined Combustion Station(b)
86.67
%
 

 

 
552

Duke Energy Ohio
 
 
 

 
 

 
 

Transmission facilities(c)
Various

 
89

 
63

 
1

Duke Energy Indiana
 

 
 

 
 

 
 

Gibson Station (unit 5)(d)
50.05
%
 
348

 
162

 
9

Vermillion Generating Station(e)
62.5
%
 
155

 
120

 

Transmission and local facilities(d)
Various

 
4,672

 
1,739

 


(a)
Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and Piedmont Municipal Power Agency.
(b)
Jointly owned with NCEMC.
(c)
Jointly owned with America Electric Power Generation Resources and The Dayton Power and Light Company.
(d)
Jointly owned with Wabash Valley Power Association, Inc. (WVPA) and Indiana Municipal Power Agency.
(e)
Jointly owned with WVPA.