SEC Filings

10-K
NRG ENERGY, INC. filed this Form 10-K on 02/29/2016
Entire Document
 
                

Operations and maintenance expense
 
NRG Business
 
NRG Home Retail
 
NRG Home Solar
 
NRG Renew
 
NRG Yield
 
Eliminations
 
 
 
Gulf Coast
 
East
 
West
 
B2B
 
 
 
 
 
 
Total
 
(In millions)
Year Ended December 31, 2015
$
643

 
$
1,006

 
$
143

 
$
81

 
$
201

 
$
18

 
$
135

 
$
171

 
$
(85
)
 
$
2,313

Year Ended December 31, 2014
617

 
1,017

 
141

 
84

 
197

 
11

 
116

 
131

 
(84
)
 
2,230

Operations and maintenance expenses increased by $83 million for the year ended December 31, 2015, compared to the same period in 2014, due to:
 
(In millions)
Increase due to the acquisition of EME in April 2014 and the Alta Wind Assets in August 2014
$
116

Increase in operations and maintenance expense related to planned outages at Cottonwood and Big Cajun
42

Increase in operations and maintenance expense related to Ivanpah reaching commercial operations in early 2014
8

Increase in operations and maintenance expense related to El Segundo Energy Center's forced outage in 2015
6

Increase due to the acquisition of Dominion in March 2014
4

Decrease in East operations and maintenance expense related to the timing and expense for prior year outages at various plants
(64
)
Decrease in operations and maintenance expense due to the retirement of Coolwater
(30
)
Decrease in operations and maintenance expense related to Texas coal facilities due to timing of outages
(14
)
Other
15

 
$
83


Other cost of operations

Other cost of operations, comprised of asset retirement expense, insurance expense and property tax expense, increased by $43 million for the year ended December 31, 2015, compared to the same period in 2014, primarily due to the increase in property tax expense related to the acquisition of EME in April 2014 and the Alta Wind Assets in August 2014.

Depreciation and Amortization Expense
Depreciation and amortization expense increased by $43 million for the year ended December 31, 2015, compared to the same period in 2014, primarily due to increases of $19 million and $40 million due to the acquisitions of EME in April 2014 and the Alta Wind Assets in August 2014, respectively, partially offset by a decrease in depreciation expense for facilities impaired during 2015.
Impairment Losses
In 2015, the Company recorded impairment losses of $5,030 million related to various facilities, as well as goodwill for its Texas and Home Solar reporting units, as further described in Item 15 Note 10, Asset Impairments, and Note 11, Goodwill and Other Intangibles, to the Consolidated Financial Statements.
In 2014, the Company recorded an impairment loss of $97 million related primarily to the Osceola and Coolwater facilities, as further described in Item 15 Note 10, Asset Impairments, to the Consolidated Financial Statements.

73