Reduce energy consumption and eliminating wastage are among the main goals of the European Union. New Public Building must be NZEB by the end of 2018, New Commercial Buildings at 2020 and all existing ones until 2030. European Energy DG says that there is an opportunity of 50% savings with measures applied to the building shell, equipments and user’s behaviour. Bandora is an ingest engine towards energy efficiency inside a building to manage equipments and users. Gathering inputs from BMS, user’s experience feedbacks, regular sensors (light, temperature, humidity, space occupancy) and Financials data from Facilities Managers, we analyse the energy demand, the way it’s used and wasted in a Building. Using predictive algorithms, we're able to reconfigure BMS setup automatically and in real time, in order to reduce energy costs while increasing users comfort and satisfaction with their workplace. Bandora is based on machine learning technologies, so it applies recurrently new measures to reduce up to 40% the energy consumption.