PHOENIX aims to offer a cyber-shield armour to European EPES infrastructure enabling cooperative detection of large scale, cyber-human security and privacy incidents and attacks, guarantee the continuity of operations and minimize cascading effects in the infrastructure itself, the environment, the citizens and the end-users at reasonable cost. PHOENIX will realise 3 strategic goals: (1) Strengthen EPES cybersecurity preparedness by employing security a) “by design” via novel protective concepts for resilience, survivability, self-healing and accountability, and b) “by innovation” via adapting, upgrading and integrating a number of TRL5 developments to TRL7-8 and validating them in real-live large scale pilots; (2) Coordinate European EPES cyber incident discovery, response and recovery, contributing to the implementation of the NIS Directive by developing and validating at national Member States and pan-European level, a novel fully decentralized inter-DLTs/blockchain based near real-time synchronized cybersecurity information awareness platform, among authorized EPES stakeholders, utilities, CSIRTs, ISACs, CERTs, NRAs and the strategic NIS cooperation group; (3) Accelerate research and innovation in EPES cybersecurity by a novel deploy, monitor, detect and mitigate DevSecOps mechanism, a secure gateway, privacy preserving federated Machine Learning algorithms and establishment of certification methodologies and procedures through a Netherlands-based Cybersecurity Certification Centre. PHOENIX consist of a prestigious consortium of 25 partners (+1 third party), supported by the CERT-RO, covering all required expertise including energy (RES) generation/VPP, TSO, DSOs, aggregators, retailers, prosumers, end-users, technology providers, SMEs. PHOENIX validation will take place in 5 large scale pilots covering the complete value chain from generation to consumption, including cross-border experiments and cascading effects to other critical infrastructures.