The rise in the level of global warming in the world has lead to climate change and in the weather patterns and rise of diseases in the world. These changes started to lead us into a new era, an era of renewable energy and sustainability. This study is part of continuing research work carried out by the researchers at the EDRG (Environmental Design Research Group) in Alexandria, Egypt on the use of renewable energy sources in Egypt. The work presented in this paper is a preliminary study conducted out by the EDRG in the field of renewable energy and more work is being done on it. The paper discusses briefly what is global warming and climate change and how they affect us today. The Mediterranean is particularly threatened by climate change (increasing water stress, desertification, droughts and flooding, submergence of low-lying delta areas, etc.) and the Kyoto Protocol represents an opportunity for funding development. Rational energy use and increasing use of clean and renewable energies (solar, wind, biomass, etc.) is the most important energy stakes facing the region. Analysis of Alexandria's existing waterfronts will take place and start to allocate all the water resources on these waterfronts. The alternative use of renewable energy technologies for a sustainable future will be discussed. A conclusion will later be derived and from comes the recommendations.