Our planet is witnessing exciting times: The world population is booming like never before while the third world economies are growing at an accelerating pace. Consequently, all nations are growing hungrier for the limited and scarce natural resources often overlooking environmental considerations. As more people now necessitate higher standards of living, it is increasingly challenging to supply them with adequate food, potable water, clean air, modern infrastructure and affordable energy, all while preserving the environment. To meet those challenges, considerable research efforts are required in the areas of Renewable Energies, Material Sciences, Energy Management, Environmental Sustainability, Government Policies, as well as Education and Training. TerraGreen13 provides a unique forum for experts and researchers from all over the world to share their ideas towards a wealthier humanity, yet a more sustainable planet.