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SEC Filing Details

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

The following table summarizes proceeds from sales of available-for-sale securities and the related realized gains and losses from these sales. The cost of securities sold is determined using the specific identification method.
 
Year Ended December 31,
 
2017
 
2016
 
2015
 
(In millions)
Realized gains
$
22

 
$
26

 
$
21

Realized losses
8

 
11

 
14

Proceeds from sale of securities
501

 
510

 
631

Note 7 — Inventory
Inventory consisted of:
 
As of December 31,
 
2017
 
2016
 
(In millions)
Fuel oil
$
90

 
$
142

Coal/Lignite
126

 
219

Natural gas
24

 
28

Spare parts
292

 
332

Total Inventory
$
532


$
721

During the year ended December 31, 2017, the Company recorded a lower of weighted average cost or market adjustment related to fuel oil of $33 million.
Note 8 — Notes Receivable
Notes receivable consist of fixed and variable rate notes related primarily to amounts owed to the Company from transmission owners for certain projects for the financing of network upgrades. The Company's notes receivable were as follows:
 
As of December 31,
 
2017
 
2016
 
(In millions)
Notes receivable
$
16

 
$
34

Less current maturities(a)
14

 
18

Total notes receivable — non-current
$
2

 
$
16

(a)
The current portion of notes receivable is recorded in prepayments and other current assets on the consolidated balance sheets.
Note 9 — Property, Plant and Equipment
The Company's major classes of property, plant, and equipment were as follows:
 
As of December 31,
 
Depreciable
 
2017
 
2016
 
Lives
 
(In millions)
 
 
Facilities and equipment
$
15,907

 
$
18,698

 
1-40 Years
Land and improvements
710

 
750

 
 
Nuclear fuel
236

 
226

 
5 Years
Office furnishings and equipment
434

 
412

 
2-10 Years
Construction in progress
1,086

 
619

 
 
Total property, plant, and equipment
18,373

 
20,705

 
 
Accumulated depreciation
(4,465
)
 
(5,336
)
 
 
Net property, plant, and equipment
$
13,908

 
$
15,369

 
 
The Company recorded long-lived asset impairments during the years ended December 31, 2017 and 2016, as further described in Note 10, Asset Impairments.

163