Summary of Significant Accounting Policies (Details - Disaggregation of revenue by revenue stream) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Product Information [Line Items]
Revenues	$ 161,993	$ 138,628	$ 97,883
AUSTRALIA
Product Information [Line Items]
Revenues	124,248	113,504	80,518
JAPAN
Product Information [Line Items]
Revenues	65	3,788	9,563
ITALY
Product Information [Line Items]
Revenues	690	656	1,365
UNITED STATES
Product Information [Line Items]
Revenues	33,093	16,862	4,320
UNITED KINGDOM
Product Information [Line Items]
Revenues	1,211	1,023	979
GREECE
Product Information [Line Items]
Revenues	2,686	2,795	1,138
PV Components [Member]
Product Information [Line Items]
Revenues	123,138	112,442	80,941
PV Components [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	123,138	112,442	79,470
PV Components [Member] | JAPAN
Product Information [Line Items]
Revenues	0	0	0
PV Components [Member] | ITALY
Product Information [Line Items]
Revenues	0	0	0
PV Components [Member] | UNITED STATES
Product Information [Line Items]
Revenues	0	0	1,471
PV Components [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	0	0	0
PV Components [Member] | GREECE
Product Information [Line Items]
Revenues	0	0	0
Roofing Solar System [Member]
Product Information [Line Items]
Revenues	29,028
Roofing Solar System [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	0
Roofing Solar System [Member] | JAPAN
Product Information [Line Items]
Revenues	0
Roofing Solar System [Member] | ITALY
Product Information [Line Items]
Revenues	0
Roofing Solar System [Member] | UNITED STATES
Product Information [Line Items]
Revenues	29,028
Roofing Solar System [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	0
Roofing Solar System [Member] | GREECE
Product Information [Line Items]
Revenues	0
Electricity Revenue with PPA's [Member]
Product Information [Line Items]
Revenues	4,587	4,421	3,368
Electricity Revenue with PPA's [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	0	0	0
Electricity Revenue with PPA's [Member] | JAPAN
Product Information [Line Items]
Revenues	0	0	0
Electricity Revenue with PPA's [Member] | ITALY
Product Information [Line Items]
Revenues	690	615	1,365
Electricity Revenue with PPA's [Member] | UNITED STATES
Product Information [Line Items]
Revenues	0	0	0
Electricity Revenue with PPA's [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	1,211	1,023	979
Electricity Revenue with PPA's [Member] | GREECE
Product Information [Line Items]
Revenues	2,686	2,783	1,024
Pre-development Solar Projects [Member]
Product Information [Line Items]
Revenues	894	101	(2,835)
Pre-development Solar Projects [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	0	0	0
Pre-development Solar Projects [Member] | JAPAN
Product Information [Line Items]
Revenues	0	0	0
Pre-development Solar Projects [Member] | ITALY
Product Information [Line Items]
Revenues	0	0	0
Pre-development Solar Projects [Member] | UNITED STATES
Product Information [Line Items]
Revenues	894	101	(2,835)
Pre-development Solar Projects [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	0	0	0
Pre-development Solar Projects [Member] | GREECE
Product Information [Line Items]
Revenues	0	0	0
Sales And Lease Of E V [Member]
Product Information [Line Items]
Revenues	2,336	377
Sales And Lease Of E V [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	0	0
Sales And Lease Of E V [Member] | JAPAN
Product Information [Line Items]
Revenues	0	0
Sales And Lease Of E V [Member] | ITALY
Product Information [Line Items]
Revenues	0	0
Sales And Lease Of E V [Member] | UNITED STATES
Product Information [Line Items]
Revenues	2,336	377
Sales And Lease Of E V [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	0	0
Sales And Lease Of E V [Member] | GREECE
Product Information [Line Items]
Revenues	0	0
Other Services [Member]
Product Information [Line Items]
Revenues	2,010	1,386	6,846
Other Services [Member] | AUSTRALIA
Product Information [Line Items]
Revenues	1,110	1,062	1,048
Other Services [Member] | JAPAN
Product Information [Line Items]
Revenues	65	0	0
Other Services [Member] | ITALY
Product Information [Line Items]
Revenues	0	41	0
Other Services [Member] | UNITED STATES
Product Information [Line Items]
Revenues	835	271	5,684
Other Services [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues	0	0	0
Other Services [Member] | GREECE
Product Information [Line Items]
Revenues	$ 0	12	114
PV project assets [Member]
Product Information [Line Items]
Revenues		19,901	9,563
PV project assets [Member] | AUSTRALIA
Product Information [Line Items]
Revenues		0	0
PV project assets [Member] | JAPAN
Product Information [Line Items]
Revenues		3,788	9,563
PV project assets [Member] | ITALY
Product Information [Line Items]
Revenues		0	0
PV project assets [Member] | UNITED STATES
Product Information [Line Items]
Revenues		16,113	0
PV project assets [Member] | UNITED KINGDOM
Product Information [Line Items]
Revenues		0	0
PV project assets [Member] | GREECE
Product Information [Line Items]
Revenues		$ 0	$ 0