This collection comprises selected papers from the 3 rd International Congress on Energy and Environment Engineering and Management. Each Congress provides an opportunity for academics, scientific consultants and companies to share days of interaction that permit the free interchange of experience and, at the same time, create and renew links between different work-groups. This Congress included a total of six thematic areas, covering a broad spectrum within the applications associated with environmental engineering, energy installations, renewable energy, electromechanics, materials and project engineering. The contents therefore provide a handy introduction to the subject. These 23 selected, peer-reviewed papers originally were presented during the 3rd International Congress of Energy and Environment Engineering and Management held in Portalegre, Portugal, in November 2009. The 63 contributors address a wide variety of topics, including: sustainable manufacturing in the aerospace industry, surface wave energy capture systems, interface potential modeling in a finite crystal, ecological design in projects engineering, and computer simulation and depth profiling of light nuclei by nuclear techniques. Editors are de Brito (Portalagre Polytechnic Institute, Portugal) and Gómez (Extremadura U. Spain).