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Grid infrastructureUnited StatesEIR-0578

Transformer explosion causes outage in Brewster during heat wave

2026Published 9 Sept 2026Responsible editor: Chief Editor

MinorElectricalProvisional
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
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supply cut for about •• daysShown in the record →Full estimate
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Where
Brewster, Massachusetts, United States
What
Transformer exploded during high electricity demand from extreme heat
Cause
Not reported

What happened

During extreme heat, high electricity demand was reported as likely causing scattered power outages across Cape Cod, with hundreds of customers out in towns including Falmouth, Bourne, Barnstable, Chatham and Brewster. Bourne Police reported a transformer fire on the power lines along Bournedale Road, cutting power in that area, including Sagamore Beach. Early the following evening a transformer exploded in flames on Main Street (Route 6A) at Underpass Road in Brewster.

The source reported that no one was injured and that 262 customers lost power. Eversource crews worked on restoration. Later updates said the Brewster outage and the other larger outages had been restored, with about a dozen isolated outages still being worked on. No cause was reported for the Brewster explosion.

Contributing factors

The source linked the scattered outages to high demand in extreme heat. It did not state a cause for the Brewster transformer explosion.

Lessons learned

  1. Treat extreme heat and high demand as a period of higher stress on distribution equipment, and watch for new outages as others are restored.
  2. Keep restoration updates specific to each outage, including where no estimate has yet been posted.
  3. Plan for traffic control when pole and line replacement closes or restricts a public road.

More lessons on weather and external hazards, outages, backup supply and restoration, emergency response and public communication, from every incident on the register.

Not yet known

  • Type and ownership of the transformer
  • Cause of the explosion
  • Whether explosion caused any outages
  • Injuries, damage or outage duration

This entry is updated when these are reported. Get an alert for the next one like it.

Source

capecod.com

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

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