Increasing climate-related hazards demand a more resilient system that can withstand, adapt, and quickly recover from such shocks. Simultaneously, the drive towards a cleaner energy system, a rapid rise in renewables, and increased sector integration have led to a less stable system that is more volatile than before and more vulnerable to shocks. This development calls for more and better energy-network system services. EU energy legislation addresses specific sides of resilience. Grid planning involves specific resilience assessment requirements for regulators as part of the network development plans. However, resilience must be better integrated and defined as a mandatory assessment requirement. Some national regulatory authorities have already incorporated resilience in their frameworks, but we argue that a targeted regulatory and legislative approach at the EU level is also needed. The benefits of resilience investments must be measured and monetised to be adequately incentivised and included in CBA analyses. In particular, due to the increased coupling between the gas and electricity sectors, new resilience metrics that reflect the growing interdependence and feedback between the two sectors are needed. We examine several approaches to measuring resilience and suggest an approach to monetisation.
