Annual report pursuant to Section 13 and 15(d)

Property, plant and equipment - Summary of Property and Equipment (Details)

v3.24.1
Property, plant and equipment - Summary of Property and Equipment (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 5,427,445 $ 5,290,778
Less: accumulated depreciation and amortization (4,264,868) (3,883,058)
Net property, plant and equipment $ 1,162,577 1,407,720
Minimum    
Property, Plant and Equipment [Line Items]    
Useful life - years 3 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Useful life - years 15 years  
Energy systems    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,810,232 2,810,232
Energy systems | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life - years 10 years  
Energy systems | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life - years 15 years  
Machinery and Equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,744,596 1,624,885
Machinery and Equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life - years 5 years  
Machinery and Equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life - years 7 years  
Furniture and Fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 212,963 196,007
Useful life - years 5 years  
Computer software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 192,865 192,865
Computer software | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life - years 3 years  
Computer software | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life - years 5 years  
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross [1] $ 466,789 $ 466,789
[1] Lesser of estimated useful life of asset or lease term