The CIUDAD 2020 project aims to develop a new model for a sustainable and efficient city focusing on three basic pillars: energy, transport and environmental monitoring. For this, it uses the Internet of the Future as the basic facilitating element to stimulate synergies between the aforementioned pillars, as well as interaction with residents, making CIUDAD 2020 a benchmark model towards which every city should evolve to reach the standards of quality of life, efficiency and sustainability that all 21st century cities should provide. Ferrovial Agroman has been responsible for leading the work on research into IT applications and systems for improving energy efficiency in buildings and public urban spaces. Ciudad 2020 takes a holistic approach to evaluating energy use and management in cities, with residents taking an active role in management, and offers services aimed at professional managers, state bodies and the public in general. Other work packages in which Ferrovial Agroman has also been involved are transport and urban mobility, the environment and sustainability.