The renewable energies based distributed generation system is promised of the future power system, also the micro-grid concept is raised. The power is generated by small-scale generator and consumed locally without long range transmission. Usually, the micro-grid is connected to the main grid. When the main-grid is failed, the micro-grid is isolated and operated regionally with the provided power from local small-scale generator and the proposed 30 kVA grid-forming inverter with energy storage system. To improve the power density with high switching frequency, the SiC based power switches are adopted.