This course links and illustrates theory and practice in a number of economic sectors. Facts and figures are reviewed, possibilities and realizations on energy efficiency and implementation of renewable energies are investigated. In interaction with the participants, experts from various sectors will assess innovative solutions and technologies to improve energy-use for long-term sustainability. The sectors covered are: transport (road, rail, shipping and aviation), buildings, chemical and iron & steel industry, agro-business and agriculture, materials and waste management. Eventually, a discussion on the EU Emissions Trading Scheme (ETS) rounds this module on activity sectors.