Microgrids possess special characteristics different from those of large centralised conventional power systems, and their technology is evolving rapidly. The motivation for the book came from the need for updated material that presents the latest microgrid projects around the world, together with the main aspects of this emerging technology. In this book, the authors of each chapter present a timely and relevant material with the latest technology, pilot projects, and other important aspects of microgrids. We expect that the book can enrich and contribute to the objectives and aspirations of the reader in the knowledge of microgrids and, indirectly, smart grids.