Quarterly report [Sections 13 or 15(d)]

Revenue - Disaggregation of Revenue (Details)

v3.25.3
Revenue - Disaggregation of Revenue (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Disaggregation of Revenue [Line Items]        
Total revenues $ 7,183,121 $ 5,630,130 $ 21,755,712 $ 16,544,014
Products        
Disaggregation of Revenue [Line Items]        
Total revenues 2,983,795 1,391,016 8,672,927 3,002,087
Products | Cogeneration        
Disaggregation of Revenue [Line Items]        
Total revenues 515,067 1,294,453 2,662,271 2,188,355
Products | Chiller        
Disaggregation of Revenue [Line Items]        
Total revenues 2,234,728 37,979 5,624,818 695,040
Products | Engineered Accessories        
Disaggregation of Revenue [Line Items]        
Total revenues 234,000 58,584 385,838 118,692
Services | Services        
Disaggregation of Revenue [Line Items]        
Total revenues 3,943,510 3,850,551 12,153,700 11,991,378
Services | Energy production        
Disaggregation of Revenue [Line Items]        
Total revenues $ 255,816 $ 388,563 $ 929,085 $ 1,550,549