Helios Solar Storm Scenario

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In this report, we provide a catastrophe scenario for a US-wide power system collapse that is caused by an extreme space weather event affected Earth: the Helios Solar Storm scenario.

This scenario is a stress test for managers and policy-makers. Stress tests are important for understanding risk exposure across a spectrum of extreme systemic shocks such as those proposed in the Cambridge Taxonomy of Threats, which encompasses a dozen major classes of catastrophes. A suite of scenarios can be used as a basis for calibrating an organisation’s inherent risk, vulnerability and resilience.