3. Course content/structure: Course introduction, familiarizing of students with obligations. Global energy trends, perspectives and problems. Energy inputs, ?ossibilities on energy savings, status and perspective. Energy balance, energy figures and fundamentals of energy balance and cost analysis with examples. Energy sources and renewable energy sources in rural areas, clasification, definitions. Technologies for energz utiliyation in rural areas (transport vehicles, generation of heat energy, generation of electricity, cogenereation, trigeneration). Solar energy in rural areas. Solid biomass in rural areas. Liquid biomass and biofuels, importance for rural areas. Gaseous biomass (biogas) in rural areas. Application of other renewable energy sources in rural areas. Role of energy and renewable energy sources for rural development and contribution to environmental protection. Planing of utilization of energy sources in rural areas. Visits to one to three facilities in rural areas that use renewable energy sources.