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JOINTLY OWNED UTILITY FACILITIES (Tables)
12 Months Ended
Dec. 31, 2013
Jointly owned utility facilities  
Schedule of proportionate share of significant jointly owned electric generating facilities
The amounts were as follows at December 31, 2013:
(Millions, except for percentages and megawatts)
 
Weston 4
 
Columbia Energy Center
Units 1 and 2
 
Edgewater Unit 4
Ownership
 
70.0
%
 
31.8
%
 
31.8
%
Our share of rated capacity (megawatts)
 
374.5

 
335.2

 
105.0

In-service date
 
2008

 
1975 and 1978

 
1969

Utility plant
 
$
576.8

 
$
172.8

 
$
41.8

Accumulated depreciation
 
$
(114.6
)
 
$
(111.6
)
 
$
(28.3
)
Construction work in progress
 
$
2.2

 
$
194.8

 
$
0.3