‘Energiae’ is a collection of essays that try to establish whether the future energy challenges represent a threat or an opportunity for the urban landscapes. In his text, Sergio Pascolo points at the goal of combining the reduction of energy waste with urban and architectural quality as the core of a “cross-disciplinary” design research summarized by the acronym CBMC-CCMB, Compact Buildings for a Mixed-City / Compact City through Mixed –Buildings