Definition
The CER Directive (Critical Entities Resilience Directive, 2022/2557/EU) sets requirements for the identification and protection of critical infrastructureSystems and facilities necessary for society's basic functions - including power supply, water systems, telecommunications, and transport. in the EU/EEA, including the energy sector. The directive replaces the earlier NIS Directive for physical infrastructure and is complemented by NIS2EU directive on network and information security - imposes strict security requirements on critical infrastructure. for cybersecurity. Energy companies classified as critical entities must conduct risk assessments, implement resilience measures, and report incidents to national authorities. In Norway, DSB is the responsible authority.