Annotation The 2nd International Conference on Energy Science and Applied Technology, 2015 (ESAT 2015) was held in August 2015 in Wuhan, China. The conference was attended by scientists, scholars, engineers and students from universities, research institutes and industries all around the world to present ongoing research activities. This proceedings volume assembles papers from various professionals engaged in the fields of energy science and engineering, resources and environmental science and its applied technology.