The proceedings of the 2nd International Congress on Energy Efficiency and Energy Related Materials include 73 peer-reviewed technical papers, submitted by leading academic and research institutions from over 20 countries and representing some of the most cutting-edge research available. The 73 papers are grouped into the following sections:-          General Issues-          Wind Energy-          Solar Energy-          Nuclear Energy-          Biofuels and Bioenergy-          Fossil Energy-          Hydropower-          Energy Storage, Conservation and Efficiency-          Environmental Issues-          Carbon Capture and Storage-          Bio-Assessment and Toxicology-          Air Pollution from Mobile and Stationary Sources-          Transport of Air Pollutants-          Environmentally Friendly Construction and Development-          Energy Management Systems-          Materials for Sustainable Energy-          Materials for Renewable Energy Storage and Conversion-          Fuel Cells-          Hydrogen Storage-          Photovoltaics and Solar Cells-          Hydrogen Production and Fuel Generation from Renewables (Catalysis)-          Carbon Dioxide Sequestration and Conversion-          Energy-Saving Materials-          Thermoelectrics-          Saving Energy in Buildings-          Modeling and Theoretical Aspects in Energy-Related Materials