The Building Energy and Environment Group (BEE Group) is an autonomous department of the International Center for Numerical Methods in Engineering (CIMNE) involving over 20 researchers (Physics, Engineering, ICT, Environmental Science and Statistics specialists). It was founded in 2001 and has two main offices, one in the GAIA building of the UPC Campus in Terrassa and the other in the CREA building of the University of Lleida. BEE Group meets the challenge of employing our knowledge and experience to help users to get the best possible use out of the energy that they consume. We collaborate with leading research centers and build bridges between companies, users and researchers. Energy is essential in our lives and we care about it.