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SOLAR POWER SYSTEMS, NET

12 Months Ended

Dec. 31, 2020

SOLAR POWER SYSTEMS, NET

SOLAR POWER SYSTEMS, NET

7. SOLAR POWER SYSTEMS, NET

Solar power systems, net consist of the following:

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​	​	​	​	​
​	​	At December 31,	​	At December 31,
​		2019		2020
​	​	$	​	$
Solar power systems in operation	​	70,449	​	182,232
Solar power systems under construction	​	4,830	​	6,565
Accumulated depreciation	​	(22,322)	​	(30,535)
Solar power systems, net	​	52,957	​	158,262

​

Depreciation expense of solar power systems was $3,756, $6,379 and $6,396 for the years ended December 31, 2018, 2019 and 2020, respectively.

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- Definition

The entire disclosure for solar power systems used in the normal conduct of business. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense.

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