Handbook of Energy Systems in Green Buildings This handbook provides a comprehensive summary on the energy systems used in green buildings with a particular focus on solar energy the most common renewable energy source applied in this field. With the growing concern about environmental protections the concepts of green building have been widely promoted and implemented in nowadays building designs and constructions. Among all sustainable energy systems including energy harvesting conversion and storage is one of most important design factors in green buildings. Unlike traditional energy systems which highly rely on fossil fuel green buildings utilize renewable energy source or high efficient energy systems or both to provide environmental friendly low carbon waste energy. The most updated concepts designs technologies developed and implemented in heat pumps cooling systems power systems and energy storage will be discussed here in details. This handbook is subdivided into 7 9 main sections to provide an in depth discussion from foundational principles to practical techniques. In addition different cases about green energy systems implemented in global will be discussed. The book will be structured easy to read to make it more accessible to graduate students and professionals in diverse scientific and engineering communities including applied physics civil engineering electrical engineering mechanical engineering material engineering and chemical engineering. Green building Concepts Solar energy systems Efficient heat pump energy systems Combined cooling heating and power systems Efficient heating and cooling technologies Energy storage Passive building design Integrated energy systems in green buildings Cases of energy systems in green buildings.