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3. ACQUISITIONS - SWS Consideration (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 24, 2021
Sep. 30, 2021
Sep. 30, 2020
Business Acquisition [Line Items]      
[custom:ContingentEquityConsiderationFairValue-0] $ 533,002    
Stock Issued During Period, Value, Acquisitions   $ 15,784,372 $ 695,000
S W S Earned On Closing [Member]      
Business Acquisition [Line Items]      
Stock Issued During Period, Value, Acquisitions 5,490,000    
Solar Watt Solutions [Member]      
Business Acquisition [Line Items]      
Business Acquisition, Transaction Costs 1,350,000    
Acquisition Costs, Cumulative 6,687,907    
Solar Watt Solutions [Member] | Restricted Stock Fair Value [Member]      
Business Acquisition [Line Items]      
Stock Issued During Period, Value, Acquisitions $ 4,649,905    
Solar Watt Solutions [Member] | Fair Value [Member]      
Business Acquisition [Line Items]      
Weighted Average Number of Shares, Contingently Issuable 155,000    
Solar Watt Solutions [Member] | S W S Equity [Member]      
Business Acquisition [Line Items]      
Stock Issued During Period, Shares, Acquisitions 310,018    
Solar Watt Solutions [Member] | S W S Earned On Closing [Member]      
Business Acquisition [Line Items]      
Stock Issued During Period, Shares, Acquisitions 167,685