Research ArticleOpen accessIn the keywordsManagement of Renewable Energies and Environmental ProtectionRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.The purpose of this project is to present an overview of renewable energy sources, major technological developments and case studies, accompanied by applicable examples of the use of sources. Renewable energy is the energy that comes from natural resources: The wind, sunlight, rain, sea waves, tides, geothermal heat, regenerated naturally, automatically. Greenhouse gas emissions pose a serious threat to climate … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 23 Nov 2017 · 8,106 accessesView PDFCite