This document shows the PHOENIX project key business and functional details that will further trigger the implementation of technical activities in the project. At first,and following the methodological approach as agreed among the partners, a preliminary PHOENIX related market and regulatory analysis is performed in order to screen the market and regulation environment. In addition, the use cases and business scenarios of the project are defined to screen the landscape for the technical activities to be performed in the project. Following this analysis, the requirements extraction phase takes place, including also the building occupants in this process through structured surveys that were circulated by the demo partners among their customers. By extracting the list of use cases and the associated requirements, an elicitation process takes place towards the extraction of the 1st version of the PHOENIX project MVP.