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