The increase in the use of renewable energy systems in recent years has led to an increase in the importance of work on micro-grids. In micro-grids, energy is consumed where it is produced. This leads to a reduction in transmission and power losses in the lines. At the same time, the negative effects of the industrial plants that disrupt the quality of power are eliminated by the micro-grid model and more efficient and reliable grids can be established. Technological developments that impact each field have also affected the electricity distribution grids. Problems such as inefficient energy transmission systems caused by high power losses, problems in the integration of renewable sources into the grid, inflexible demand, and wage problems make it difficult to meet the increasing demand with the traditional structure. In this study, a smart grid system was set up in the sample micro structure. The system consist from a photovoltaic system with a consumer and a grid system that feeds this consumer. There are a photovoltaic system and also a battery group in the applied micro grid. The power of the photovoltaic system in the micro-grid is continuously monitored by a microcontroller. The energy level information of PV panel system, the battery, and grid are supplied by voltage divider circuits to microcontroller. The information transmitted by the voltage dividers to the microcontroller is evaluated by the control algorithm. Considering account possible possibilities, the receiver is primarily fed by the photovoltaic system, in other cases fed from the grid or the battery system, thanks to the semiconductor switches used in the microcontroller control. In addition, excess energy generated by the microcontroller is transferred to the main grid. As a result of this application, the level of use of the renewable energy system has been increased and the energy cost has been reduced.