Sunsoko offers the most reliable and efficient solar power packs or utility interface solar pv system. The system design comprises photovoltaic panels, charge controller, battery and single phase inverter. The system is well suited for all applications where there is frequent load shedding, no grid connections. The great advantage of this system is, it cuts down monthly electrical bills and can be installed for existing wiring systems. How it works: the sunsoko solar power pack is used in a grid connected house. Electricity generated by the solar system is stored in a battery bank which provides power to all or some of the home`s/business premises/office. If the batteries become low, an automatic transfer switch reconnects the house loads to the utility power. Any size pv array can be used in this type of system, since utility power is available whenever pv produced power are not available. Array size can be increased incrementally, requiring less use of utility power. Sunsoko solar power pack system functions during power outrages and can be enlarged to make the home independent of the utility.