The aim of the course is to cover the basic trends of the technological and the economic aspects of an energy sector. The main attention is focused on explaining the mechanisms and operation of energy machinery and some important features of technology and economy/economics for conducting an energy-focused research or assessing an energy policy. The course thus deals mostly with three main areas: the production chain and the energy use of commodity, the relation between energy and economy, and how the energy commodities are marketed. The course Energy Commodities I consists of topics of coal, nuclear energy, renewables, all around electricity utility sector. Electrification of industry and consumption is a modern trend increasing the demands on production and quality of electricity. The course thus responds to modern up to date trends in worldwide development of energy usage.