This volume contains six chapters that detail recent advances in energy research. Chapter One addresses devices designed for both sunlight and artificial illumination as well as the emerging bifacial devices. Chapter Two describes the application of electrodeposited Ni-based, non-noble metal alloys and composites, as cathodes in the zero-gap membrane industrial cells. Chapter Three details the elaboration, characterization, modelling and application of the Polyurethane/Lead Zirconate Titanate composites for mechanical energy harvesting. Chapter Four discusses details of algal based biofuel production, factors affecting production, their efficient recovery and omics approach to improve the biofuel production. Chapter Five presents the use of floating offshore wind turbines for green electricity generation. Lastly, Chapter Six explains the findings of recent research on the generation of a hydrogen-based synthesis gas obtained from water electrolysis that uses an added carbon source.