Resilience is a fundamental and important subject with numerous viewpoints and definitions. A significant challenge is to fit existing definitions used by other industries into metric definitions, performance targets, and calculation steps that are practical and implementable for an electric power system, so that entities responsible for planning and operating the electric power system may improve.
This white paper does not attempt to provide the answers for defining and ensuring power system resilience. Instead, it evaluates only one aspect of power system resilience—the availability and supply of power, energy, and a set of power-supply-related reliability services—and provides insights about how the many definitions may be linked to actionable metrics for four practice areas: planning, operations, restoration, and market design. It summarizes how power system organizations may achieve supply resilience and explores potential future improvements.