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Inventories, net (Details 1) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Inventories net    
Solar panels, inverters, battery storage and components $ 1,276,948 $ 1,336,066
LED lights 602,749 601,698
Total inventories, gross 1,879,697 1,937,764
Less: reserve for excess and obsolete inventories (631,250) (596,367)
Total inventories, net $ 1,248,447 $ 1,341,397