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Incident

Northeast blackout: New York City hospital generators fail

During the 2003 blackout multiple NYC hospital emergency generators failed. The outage was associated with about 90 excess deaths citywide.

Sources checked when written 26 September 2026

TierThe NYC health department lists failures of multiple hospital emergency generators. How tiers are assigned.

What happened

The NYC health department's account lists failure of multiple hospital emergency generators, risk to patients dependent on powered equipment, and loss of ED data feeds to syndromic surveillance among the blackout's public health effects. A later time-series study estimated about 90 excess deaths in New York City, with accidental deaths up 122% and disease-related deaths up 25%.[1,2]

Documented harm

About 90 excess deaths citywide (Anderson & Bell 2012); deaths inside hospitals attributable to generator failures not documented in the sources reviewed.

What it teaches

Sources

  1. Blackout of 2003: public health effects and emergency response. Public Health Reports, 2006. Primary Peer-reviewed · link checked 2026-09-26
  2. Lights out: impact of the August 2003 power outage on mortality in New York, NY. Epidemiology, 2012. Primary Peer-reviewed · link checked 2026-09-26

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