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SEC Filing Details

10-K
NRG ENERGY, INC. filed this Form 10-K on 03/01/2018
Entire Document
 

NRG Defined Benefit Plans
The annual net periodic benefit cost/(credit) related to NRG's pension and other postretirement benefit plans include the following components:
 
Year Ended December 31,
 
Pension Benefits
 
2017
 
2016
 
2015
 
(In millions)
Service cost benefits earned
$
26

 
$
30

 
$
32

Interest cost on benefit obligation
43

 
43

 
53

Expected return on plan assets
(58
)
 
(60
)
 
(62
)
Amortization of unrecognized net loss
4

 
2

 
2

Net periodic benefit cost
$
15

 
$
15

 
$
25

 
Year Ended December 31,
 
Other Postretirement Benefits
 
2017
 
2016
 
2015
 
(In millions)
Service cost benefits earned
$
1

 
$
2

 
$
3

Interest cost on benefit obligation
4

 
6

 
9

Amortization of unrecognized prior service credit
(9
)
 
(5
)
 
(5
)
Amortization of unrecognized net (gain)/loss
(1
)
 

 
1

Curtailment gain

 

 
(14
)
Net periodic benefit (credit)/cost
$
(5
)
 
$
3

 
$
(6
)
A comparison of the pension benefit obligation, other postretirement benefit obligations and related plan assets for NRG's plans on a combined basis is as follows:
 
As of December 31,
 
Pension Benefits
 
Other Postretirement
Benefits
 
2017
 
2016
 
2017
 
2016
 
(In millions)
Benefit obligation at January 1
$
1,241

 
$
1,196

 
$
128

 
$
178

Service cost
26

 
30

 
1

 
2

Interest cost
43

 
43

 
4

 
6

Plan amendments

 

 
(1
)
 
(42
)
Actuarial loss/(gain)
77

 
40

 
6

 
(2
)
Employee and retiree contributions

 

 
3

 
3

Benefit payments
(58
)
 
(68
)
 
(13
)
 
(17
)
Benefit obligation at December 31
1,329

 
1,241

 
128

 
128

Fair value of plan assets at January 1
953

 
916

 

 

Actual return on plan assets
173

 
72

 

 

Employee and retiree contributions

 

 
3

 
3

Employer contributions
36

 
33

 
10

 
14

Benefit payments
(58
)
 
(68
)
 
(13
)
 
(17
)
Fair value of plan assets at December 31
1,104

 
953

 

 

Funded status at December 31 — excess of obligation over assets
$
(225
)
 
$
(288
)
 
$
(128
)
 
$
(128
)
Less: GenOn postretirement obligation(a)

 

 
38

 
46

Add: Retained obligation in bankruptcy proceeding(a)

 

 
(25
)
 
(25
)
Net obligation for NRG
$
(225
)
 
$
(288
)
 
$
(115
)
 
$
(107
)
(a)
The difference between GenOn's postretirement benefit obligation and NRG's retained obligation of $13 million and $21 million is presented in noncurrent liabilities for discontinued operations as of December 31, 2017 and 2016, respectively.

180