ConstruInnovation Theater opens the session with proposals from companies focused on obtaining greater energy efficiency. We are all concerned about the bill for our electricity company and more so when in summer we already need more energy than in winter. This increase in energy consumption must be alleviated with better construction solutions and better equipment. From the PassivHaus, the GBCe, etc. It has always been challenged to make tangible the benefits of passive buildings or buildings with almost zero consumption. This interest has been favored by all construction agents: the developer himself wants to make tangible this ROI, which certainly exists but is difficult to monetize for the end user. This session will analyze proposals where this profitability is precisely defined, a profitability that should be transformed from apparent to calculable.