3. Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of estimated useful lives of property, plant and equipment

Furniture, fixtures and equipment	5 or 7 years
Automobile	3, 5 or 7 years
Bitcoin mining equipment	3 years
Leasehold improvements	The shorter of the estimated life or the lease term
PV solar system	20 or 25 years

Schedule of disaggregation of revenues

By revenue stream	For the year ended December 31, 2020
Continued operations	Sales of PV components		Electricity revenue with PPAs		Sales of PV project asset		Sales of pre-development solar projects		Others		Total
Australia	$	112,442	$	–	$	–	$	–	$	1,062	$	113,504
Japan		–		–		3,788		–		–		3,788
Italy		–		615		–		–		41		656
United States		–		–		16,113		101		648		16,862
United Kingdom		–		1,023		–		–		–		1,023
Greece		–		2,783		–		–		12		2,795
Total	$	112,442	$	4,421	$	19,901	$	101	$	1,763	$	138,628

By revenue stream	For the year ended December 31, 2019
Continued operations	Sales of PV components		Electricity revenue with PPAs		Sales of PV project asset		Sales of pre-development solar projects			Others		Total
Australia	$	79,470	$	–	$	–	$	–		$	1,048	$	80,518
Japan		–		–		9,563		–			–		9,563
Italy		–		1,365		–		–			–		1,365
United States		1,471		–		–		(2,835	)		5,684		4,320
United Kingdom		–		979		–		–			–		979
Greece		–		1,024		–		–			114		1,138
Total	$	80,941	$	3,368	$	9,563	$	(2,835	)	$	6,846	$	97,883

By revenue stream	For the year ended December 31, 2018
Continued operations	Sales of PV components		Electricity revenue with PPAs		Sales of PV project asset		Sales of pre-development solar projects		Others		Total
Australia	$	90,067	$	–	$	–	$	–	$	1,314	$	91,381
Japan		1,605		–		10,809		–		23		12,437
Italy		–		1,733		–		–		–		1,733
United States		1,875		–		–		15,794		1,052		18,721
United Kingdom		–		932		–		–		–		932
Greece		–		378		–		–		–		378
Total	$	93,547	$	3,043	$	10,809	$	15,794	$	2,389	$	125,582

Schedule of accounts receivables and contract liabilities

The following table provides information about accounts receivables and contract liabilities from contracts with customers:

	December 31, 2020		December 31, 2019
Accounts receivable, current and noncurrent	$	17,306	$	16,539
Advance from customers	$	1,377	$	17,632

Reconciliation of total interest cost

	For the years ended December 31,
	2020		2019		2018
Interest cost capitalized	$	–	$	–	$	292
Interest cost charged to expense		3,795		3,923		6,665
Total interest cost	$	3,795	$	3,923	$	6,957