This is a course designed to acquaint students with the basic concept of the geothermal as resources and energy. Basic background for Work, energy and Power, energy types and place of the geothermal in energy market with the other renewable will be examined. Utilization of geothermal with the case studies and some practical application for geothermal projects from Turkey and world will help the students to understand geothermal better.  Material selection with corrosion identification on geothermal, production systems, well completion test and measurement will also be examined.