This document summarizes the first deliverable from Work Package 2 of the eDREAM project. It defines the stakeholders and user groups involved in the project and outlines the methodology for requirements elicitation. The document identifies the key business requirements in areas like data aggregation, demand response optimization, flexibility services, and blockchain applications. It also presents initial user requirements related to electric meters, weather data, demand response characterization, load forecasting, and baseline calculations. The deliverable lays the groundwork for further external stakeholder engagement to refine requirements and help ensure the eDREAM platform meets user needs.