The provided text outlines best practices for Transmission System Operators (TSOs), such as Energinet, to organise their data for compatibility with AI technologies and compliance with European standards. It highlights the importance of adopting industry-standard data models like CIM and CGMES for grid and market data, alongside creating a unified “single source of truth” knowledge graph to enhance interoperability and data discoverability. The text also discusses modern data architecture patterns, including central data lakes and domain-oriented data mesh principles, recommending a hybrid approach. Finally, it stresses the crucial need for robust data governance, privacy (GDPR), and cybersecurity (NIS2 compliance), ensuring data readiness for future European data-sharing initiatives like the Common European Energy Data Space.