Energy is studied from the end-use perspective. Actual practices and state-of-the-art efficiency options are covered in four days sessions. The first session is reserved for energy basics; on the one hand energy and entropy, work and heat, energy transfer and conversion (in plural), are explained for making the bow from concepts and definitions to actual technologies and applications; on the other hand, students are made familiar to the energy discussion at the global level, largely based on the yearly World Energy Outlooks and Energy Technology Perspectives published by the International Energy Agency. The second day is devoted to energy and climate policies in Europe. The European Union’s strive for a single energy market is described and commented, continued by insight in and evaluation of the 2016-2017 Energy & Climate package. The other two days focus on power and heat sources and applications. First standard utilities are documented; next, power and electricity end-uses and heat and steam end-uses require separate lectures. The modules offer new solutions and new technologies to improve energy end-uses, mainly by enhancing efficiency. Better designs, innovative methods, promising technologies are presented and illustrated with examples and case studies. There are topical sessions on new lighting techniques and applications and on combined heat and power (CHP).