Smart Grid system based on PV development is an effort to increase the efficiency of energy use. Hence the need for tools that can perform protection and monitoring of the use of electric power should be manage optimally. This tool is able to monitor the current and voltage on the load by using current and voltage sensors, then the data is converted into power (P). This system is also capable of performing power protection to the load so that if the power supplied by the power supply exceeds the power specifications on the burden of this protection system will disconnect the load from the power supply. In this study the method used in monitoring and protection mechanism using wireless communication via internet with ESP 8266 wifi module which can be accessed through website. This tool is capable of reading up to 5A current changes with an error readings on ammeters by 2.4% and the change in voltage up to 30V with an error in the voltmeter readings of 0.073%. The data read on the microcontroller will be stored on the memory card such as data loggers and some are sent to the web service is available to do the monitoring. The protection system in the tool uses the relay, the relay has a swtiching response at speeds of 54 ns. This system can be used for the control and protection mechanisms of future smart grid networks based on IoT (Internet of Things).