The book first aims to understand the way the changing behaviour of rural-urban migrants over time impacts rural communities through a systemic analysis of existing literature. The authors review existing energy sources and management systems in farms, proposing more mature and sustainable farm strategies, including innovative technologies, to better reduce dependence on fossil energy sources in agriculture. Next, this compilation reviews appropriate low-cost renewable energy technologies such as solar cooking, biogas and improved biomass cookstoves which are the most useful and easily accessible means of energy in the rural development context. The new literature on rural depopulation in Spain, published between 2015 and 2019, is analysed. The study of these literary texts is associated with the current socio-political context of Spain. The authors evaluate real tourism support and the results of its implementation considering the type of projects, local beneficiaries involved, and local resources activated in two different rural contexts in Spain. In closing, the authors identify the nature of innovation practiced in rural organizations, focusing on the processes of innovation in bamboo craft initiatives in rural territories of Northeast India.