The need to move from the nZEB target to the nZECB one represents a concrete challenge for the construction world and for the industrial and professional sectors connected to it. The need to rethink the energy paradigm, on which our building culture is based, will determine the development and use of innovative materials and adaptive technologies with low environmental impact, that are able to interact with the energy flows determined by the indoor and outdoor conditions of the built environment and to produce renewable energy. Finally, the need to reflect on the impact of our architecture in terms of climate-change emissions will lead us to rediscover the bioclimatic archetypes that each geographical area has developed over the years, leading us, perhaps, to reevaluate a stylistic and technological regionalism capable of responding with advanced key to the environmental and social needs of contemporary society.