The main purpose of the present research is to develop a new multifunctional solar PV system with Grid-tied Inverter. The multifunction of the PV system included discharge on peak electricity consumption time, emergency power supply, charge the battery stack on non-peak electricity consumption time, battery stack voltage monitoring and anti-reverse-current technology. In order to increase economic value and optimize the electric storage technology, we develop intelligent control method. The new multifunctional solar PV system was also built and tested.