Book excerpt: Scaling Up of Microbial Electrochemical Systems: From Reality to Scalability is the first book of its kind to focus on scaling up of microbial electrochemical systems (MES) and the unique challenges faced when moving towards practical applications using this technology. This book emphasizes an understanding of the current limitations of MES technology and suggests a way forward towards onsite applications of MES for practical use. It includes the basics of MES as well as success stories and case studies of MES in the direction of practical applications. This book will give a new direction to energy researchers, scientists and policymakers working on field applications of microbial electrochemical systems—microbial fuel cells, microbial electrolysis cells, microbial electrosynthesis cells, and more. - Promotes the advancement of microbial electrochemical systems, from lab scale to field applications - Illustrates the challenges of scaling up using successive case studies - Provides the basics of MES technology to help deepen understanding of the subject - Addresses lifecycle analysis of MES technology to allow comparison with other conventional methods