This course is aimed to help students know how to conduct an energy audit, and how to apply engineering principles to analyze data for improving and optimizing system outputs. The students will learn about the status, trends and energy use of common appliances and processes, as well as the energy consumption of important sectors, namely, building, industry and transport. The course will address the importance of improving energy efficiency for addressing the SDG 7 targets as well as to meeting climate mitigation targets, and the policies in the countries facilitating energy efficiency.