Ensupra EGTI300 Grid Tie Inverter Connect solar panel leads and simply plug the inverter wire into your wall electric outlet (110volt ac). It is UL approved. Patent pending technology It starts generating solar electricity in 5 minutes. Electricity meets your home power consumption upto its capacity. 25 years of warranty Inlet power source of 22vdc to 45vdc from solar panel. Appropriate one 180watts to 270watts solar panels (not included) or two smaller solar panels Pure sine-wave output, island protection (ul-1741 approved), 95% peak efficiency as tested by California energy Commision (CEC);; 99% MPPT efficiency Plug and play. Ensupra power monitor included to track solar power. Plug 6 inverters with solar panels into one dedicated socket