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System and sub-system energy resilience during public safety power shutoffs (PSPS) in California -- An evidence-based argument

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  • Daniel Thompson
  • Gianluca Pescaroli
  • Maham Furqan

Abstract

This study examines historical relationships between Public Safety Power Shutoffs (PSPS) events enacted by California's investor-owned utilities (IOUs), at the system and sub-system levels, along with other disruptions to macro electricity systems. This study contributes to understanding the balance between system-wide resilience goals, such as wildfire hazard mitigation, and sub-system-level priorities, such as minimizing the frequency and duration of localized disruptions. Focusing on circuit-level data from 2018 to 2023 as a proxy for sub-systems, we evaluate differences in outage frequency, duration, and customer impact across three major IOUs in California. Results highlight a differentiation between 'higher impact' de-energization events, which have occurred less frequently, and circuits impacted frequently but with lower customer or duration impacts. Study outcomes suggest that resilience, from the perspective of PSPS events, may be more temporal, which in this case is driven by infrastructure and planning investments by IOUs. Future work aims to incorporate socio-demographic factors, including urban-rural divide, to identify further opportunities to enhance resilience at the circuit and sub-circuit levels.

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  • Daniel Thompson & Gianluca Pescaroli & Maham Furqan, 2024. "System and sub-system energy resilience during public safety power shutoffs (PSPS) in California -- An evidence-based argument," Papers 2412.13413, arXiv.org.
    • Handle: RePEc:arx:papers:2412.13413
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    References listed on IDEAS

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    1. Gianluca Pescaroli & David Alexander, 2018. "Understanding Compound, Interconnected, Interacting, and Cascading Risks: A Holistic Framework," Risk Analysis, John Wiley & Sons, vol. 38(11), pages 2245-2257, November.
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