This book has proposed matrix energy conversion tropologies for renewable energy systems, which has includes step-up and step-down DC converter, multi-port DC converter with hybrid energy storage systems. The proposed system can be seen as a matrix energy conversion system which can be applied for solar enery and DC micro-grid application condition. This book has proposed two different multi-port conversion system for renewable DC micro-grids including step up energy conversion and matrix energy conversion based on multiple inputs energy sources and storage systems.