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Solar Energy Systems
 12 Months Ended
Dec. 31, 2016
Solar Energy Systems Disclosure [Abstract]  
Solar Energy Systems

6.Solar Energy Systems

Solar energy systems, net consisted of the following (in thousands):

 

December 31,

 

 

December 31,

 

 

2016

 

 

2015

 

System equipment costs

$

1,238,968

 

 

$

893,088

 

Initial direct costs related to solar energy systems

 

261,318

 

 

 

171,081

 

 

 

1,500,286

 

 

 

1,064,169

 

Less: Accumulated depreciation and amortization

 

(73,793

)

 

 

(32,505

)

 

 

1,426,493

 

 

 

1,031,664

 

Solar energy system inventory

 

31,862

 

 

 

70,493

 

Solar energy systems, net

$

1,458,355

 

 

$

1,102,157

 

Solar energy system inventory represents the solar components and materials used in the installation of solar energy systems prior to being installed on customers’ roofs. As such, no depreciation is recorded related to this line item. The Company recorded depreciation and amortization expense related to solar energy systems of $41.3 million, $22.3 million and $8.1 million for the years ended December 31, 2016, 2015 and 2014.