The resilience of the electricity system is crucial in the energy transition process as shown in the recent energy price crisis driven by fossil fuel dependency. The increasing share of fluctuating renewables reduces this dependency, but introduces new resilience challenges. These shifts underline the need for resilience indicators that go beyond the event-specific focus common in current literature and are easy to apply in energy system scenario analysis. Quantitative resilience assessments often emphasize event-based or performance indices, reflecting the differing understanding of resilience, even among sector stakeholders. In this work, an energy system is resilient, if it maintains its functionality during disruptions, restores it quickly, or withstands long-term stress. Aspects of resilience are considered to varying extents, with system anticipation remaining underrepresented. This paper proposes a model-derived, literature- and system-characteristics-based framework for assessing resilience in an event-independent and anticipatory manner. It is designed to be compatible with energy system modelling, compared with historical data, and applicable across different electricity system sectors. In contrast to existing works, this approach emphasizes a long-term perspective, offering insights into systemic vulnerabilities before critical thresholds are reached. Thus, this event-independent framework includes attributes which help to anticipate future system bottlenecks. It turns out that a set of criteria is required to depict the state of resilience in the electricity system which can be used as monitoring tool to address the overall system state in scenario-based analysis. This enables a more transparent, evidence-based foundation for decision-making for the development of the electricity system under evolving conditions. • Event-focused existing literature on resilience assessment in energy systems. • Event-independent and anticipative set of resilience indicators. • Easy applicable indicators on case study for energy transition in EU until 2030.
Tekin et al. (Sun,) studied this question.