This edition covers different topics from clean and renewable energy, including solar and wind energy, smart grids, analysis of renewable energy, and case studies from different countries. Section 1 focuses on solar and wind energy, describing technical properties of wind and solar photovoltaic power; improving the power generation performance of a solar tower using thermal updraft wind; wind-solar hybrid electrical power production to support national grid: case study – Jordan; and overview of research on optimization of integrated solar/wind power generation systems. Section 2 focuses on smart grids, describing energy efficiency and renewable energy technologies using smart grids; perspective on the future of distribution: smart grids, state of the art, benefits and research plans; framework for qualifying and evaluating smart grids approaches: focus on multi-agent technologies; energy efficiency in smart grid: a prospective study on energy management systems; voltage control in smart grids: an approach based on sensitivity theory. Section 3 focuses on analysis of renewable energy, describing reliability evaluation of renewable energy share in power systems; a new approach for converting renewable energy to stable energy; powering renewable programs: the utility perspective; and technical analysis and enlightenment of renewable energy. Section 4 focuses on case studies from different countries, describing a GIS methodology for planning sustainable renewable energy deployment in Portugal; necessity of the development of standards for renewable energy technologies in Nigeria; the development of the renewable energy technologies in Spain; the development of electricity grid, smart grid and renewable energy in Taiwan; evaluation of renewable energy vulnerability to climate change in brazil: a case study of biofuels and solar energy.