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Grid infrastructureUnited States2018

Explosion reported at Con Edison substation shuts road in Thornwood, New York

EIR-1126

Provisional entry. Confirmed: an explosion was reported at a Con Edison substation in Thornwood, New York, with a road closure, a reported Con Edison oil spill nearby and no injuries. Not yet known: the equipment involved, the cause, the damage and any outage. Next update: 20 September 2026.

An explosion was reported at a Consolidated Edison electrical substation in Thornwood, part of the town of Mount Pleasant, New York, at around 1pm, according to Mount Pleasant police. Commerce Street was closed in the vicinity of the substation. No injuries were reported. A Metro-North Railroad alert issued at 1.33pm warned Harlem Line customers of delays of up to 15 minutes due to a Con Edison oil spill in the vicinity of Hawthorne. The source does not state what equipment was involved, the cause of the explosion, the extent of damage, or the duration of any service disruption.

Not reported.

  1. Substation equipment failures can produce an explosion and a liquid release at the same time, so response plans should cover both fire and environmental spill risk.
  2. Early coordination between the utility, police and adjacent transport operators helps limit public safety and service impacts.
  3. Closing roads around a substation after an equipment failure is a reasonable immediate step even when no injuries are reported, pending assessment of residual hazards.

Published 2026-09-20. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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