This ebook contains four papers from The International Conference in Sustainability in Energy and Buildings 2010 (SEB-10), which took place in Brighton, UK over 6th and 7th May 2010. The conference provided an opportunity for researchers working on the technology of sustainable buildings, and techniques leading to more efficient energy use in them, to present their work. The event also attracted papers from a wider range of renewable energy topics to provide context and background. The papers in this ebook were specifically selected to show different aspects and approaches to the reduction of energy use in buildings.