Segment Information (Details - Segment information) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 161,993	$ 138,628	$ 97,883
Cost of sales	151,373	121,773	90,693
Gross profit (loss)	10,620	16,855	7,190
Renewable Energy Solutions [Member]
Revenue	152,166	112,442	80,941
Cost of sales	142,441	104,022	75,439
Gross profit (loss)	9,725	8,420	5,502
Solar Projects Development [Member]
Revenue	5,481	24,423	10,096
Cost of sales	2,133	19,314	9,307
Gross profit (loss)	3,348	5,109	789
Electric Vehicles [Member]
Revenue	2,977	377	0
Cost of sales	3,540	479	0
Gross profit (loss)	(563)	(102)	0
Others [Member]
Revenue	1,369	1,386	6,846
Cost of sales	3,259	(2,042)	5,947
Gross profit (loss)	$ (1,890)	$ 3,428	$ 899