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SB 593

Electrical corporations: significant voltage-related incidents: studies.

2025-2026 Regular Session Introduced by Melissa Hurtado

SB 593 requires California electrical utilities to study and report voltage-related incidents to regulators, improving grid reliability data and accountability.

Chaptered by Secretary of State. Chapter 420, Statutes of 2025.
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Bill Summary · SB 593

Legislative bill overview

SB 593 requires California electrical corporations to conduct and submit studies on significant voltage-related incidents affecting their power distribution systems. The bill mandates documentation of these incidents' causes, frequency, and impacts on customers and infrastructure, with findings reported to the California Public Utilities Commission.

Why is this important

Voltage-related incidents can damage customer equipment, affect service reliability, and indicate underlying infrastructure problems. Systematic study and reporting of these incidents provides regulators with data to identify patterns, hold utilities accountable for system quality, and inform infrastructure investment decisions that affect millions of California utility customers.

Potential points of contention

  • Compliance costs: Electrical corporations may argue that conducting and maintaining these studies diverts resources from infrastructure improvements or increases operational expenses that could be passed to ratepayers
  • Definition ambiguity: The bill's definition of "significant voltage-related incidents" may be subject to interpretation disputes between utilities and regulators, potentially affecting reporting requirements
  • Competitive disadvantage: Utilities may contend that detailed incident reporting could expose operational vulnerabilities or be used comparatively to undermine their reputation relative to other providers

Compiled from official sources — confirm details with the bill’s official record.

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