This document describes a novel high step-up DC-DC converter for microgrid systems. It consists of two capacitors, two diodes, and a coupled inductor. The capacitors charge in parallel and discharge in series via the coupled inductor to achieve high voltage gain. It operates in both continuous and discontinuous conduction modes with different switching modes. Experimental results show it can achieve a voltage gain of 5 times and efficiency of 96.8%. The converter is well-suited for microgrid applications requiring high step-up voltage conversion with high efficiency.