XML 119 R44.htm IDEA: XBRL DOCUMENT v2.4.1.9
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2014
Asset Retirement Obligation [Line Items]  
Schedule of Asset Retirement Obligations
The following table presents changes in the liability associated with asset retirement obligations.
(in millions)  
Duke Energy

 
Duke Energy Carolinas

 
Progress Energy

 
Duke Energy Progress

 
Duke Energy Florida

 
Duke Energy Ohio

 
Duke Energy Indiana

Balance at December 31, 2012(a)
$
5,176

 
$
1,959

 
$
2,420

 
$
1,656

 
$
764

 
$
28

 
$
37

Acquisitions
4

 
—

 
—

 
—

 
—

 
—

 
—

Accretion expense(b)
239

 
122

 
113

 
80

 
33

 
2

 
—

Liabilities settled  
(12
)
 
—

 
(12
)
 
—

 
(12
)
 
—

 
—

Revisions in estimates of cash flows(c)
(449
)
 
(487
)
 
49

 
1

 
48

 
(2
)
 
(7
)
Balance at December 31, 2013(a)
4,958

 
1,594

 
2,570

 
1,737

 
833

 
28

 
30

Acquisitions  
4

 
—

 
—

 
—

 
—

 
—

 
—

Accretion expense(b)
246

 
113

 
135

 
97

 
38

 
2

 
2

Liabilities settled(d)  
(68
)
 
—

 
(68
)
 
—

 
(68
)
 
—

 
—

Liabilities incurred in the current year(e)
3,500

 
1,717

 
1,783

 
1,783

 
—

 
—

 
—

Revisions in estimates of cash flows(c)
(174
)
 
4

 
291

 
288

 
3

 
(3
)
 
—

Balance at December 31, 2014
$
8,466


$
3,428


$
4,711


$
3,905


$
806


$
27


$
32

(a)
Balances at December 31, 2013 and 2012, include $8 million and $7 million, respectively, reported in Other current liabilities on the Consolidated Balance Sheets at Duke Energy, Progress Energy and Duke Energy Progress.
(b)
Substantially all accretion expense for the years ended December 31, 2014 and 2013 relates to Duke Energy’s regulated electric operations and has been deferred in accordance with regulatory accounting treatment.
(c)
For 2014, amounts for Duke Energy, Progress Energy and Duke Energy Progress primarily relate to Duke Energy Progress' site-specific nuclear decommissioning cost studies. Amounts at Duke Energy also include impacts from Duke Energy Progress' site-specific nuclear decommissioning cost studies on purchase accounting amounts. For 2013, amounts for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Florida primarily relate to the site-specific nuclear decommissioning cost studies.
(d)
Amounts relate to liability settlements for Crystal River Unit 3.
(e)
Amounts primarily relate to asset retirement obligations recorded as a result of the Coal Ash Act and an agreement with the SCDHEC related to the W.S. Lee Steam Station.
Public Utilities General Disclosures
The following table summarizes information about nuclear decommissioning cost studies.
(in millions)  
Annual Funding Requirement

 
Decommissioning Costs(a)(b)(c)

 
Year of Cost Study
Duke Energy Carolinas(d)  
$
21

 
$
3,420

 
2013
Duke Energy Progress(e)
14

 
3,062

 
2014
Duke Energy Florida  
—

 
1,083

 
2013
(a)
Represents cost per the most recent site-specific nuclear decommissioning cost studies, including costs to decommission plant components not subject to radioactive contamination.
(b)
Includes the Subsidiary Registrants' ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors.
(c)
Amounts are in dollars of year of cost study.
(d)
In the fourth quarter of 2014, Duke Energy Carolinas requested from the NCUC a reduction in the annual funding requirement to zero. Duke Energy Carolinas received approval from the NCUC in January 2015.
(e)
Duke Energy Progress' site-specific cost nuclear decommissioning cost studies are expected to be filed with the NCUC and PSCSC by the second quarter of 2015. Duke Energy Progress will also complete a new funding study, which will be completed and filed with the NCUC and PSCSC in 2015.
Operating licenses for nuclear units are potentially subject to extension. The following table includes the current expiration of nuclear operating licenses.
Unit  
Year of Expiration
Duke Energy Carolinas  
  
Catawba Unit 1  
2043
Catawba Unit 2  
2043
McGuire Unit 1  
2041
McGuire Unit 2  
2043
Oconee Unit 1  
2033
Oconee Unit 2  
2033
Oconee Unit 3  
2034
Duke Energy Progress  
  
Brunswick Unit 1  
2036
Brunswick Unit 2  
2034
Harris  
2046
Robinson  
2030
Duke Energy Florida  
  
Crystal River Unit 3
(a)
(a)
Duke Energy Florida has requested the NRC terminate the operating license as Crystal River Unit 3 permanently ceased operation in February 2013. Refer to Note 4 for further information on decommissioning activity and transition to SAFSTOR.