Comparing energy solutions, applications, and requirements, this text explores possible explanations and answers for the two billion people worldwide currently without electricity. It explores the potential solution of off-grid power use and provides a discussion of the typology, different technologies available, and cost assumptions associated with it. Experts from around the world explore the off-grid application to solar energy, fuel cells, generators, wind, and biomass fuel. From this dialogue, project managers can grasp the pros and cons associated with each source as well as the dimensions needed to design an off-grid power solution from scratch.