Mining and Remote and Off-grid Power for Islanded Microgrids are prevalent today in remote locations and Island nations. They represent a modern approach to solving a variety of energy supply challenges. Most notable the integration of renewable power and energy storage with preexisting generation. Their unique nature, however, can still trip up even the most advanced engineers. Before starting to design a system, it is important to understand the process of bringing about a micro-grid from initial concept to real-world operations. Most important is understanding how to design it.