← Back to the list
Grid infrastructureUnited StatesEIR-1594

Transformer explosion cuts power to more than 1,700 households in Cambridgeport

June 2024Published 29 Sept 2026Responsible editor: Chief Editor

Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersMedium confidence
supply cut for about •• daysShown in the record →Full estimate
From the recordFailed part hidden

A transformer exploded at about 3:26 p.m. on 18 June 2024 at Pearl and Putnam in Cambridgeport, according to The Harvard Crimson. The Cambridge Fire Department responded to a transformer fire shortly before 3:30 p.m. A city spokesperson said the fire destroyed the transformer, the pole and all attached wiring, including electrical, phone and cable lines. More than 1,700 households were without power according to an Eversource outage map, which at the time expected restoration by 5:15 p.m. The same spokesperson said some blocks would be without power for an extended period. Whether the fire was put out, and when power actually returned, was not reported.

  1. A pole-mounted transformer fire can destroy the pole and the lines on it, so restoration planning should cover more than the transformer itself.
  2. Outage maps should be kept current so customers can see the scale of the loss and the first estimate of return.
  3. Where some blocks may be off longer than the first estimate, that should be said early.

More lessons on outages, backup supply and restoration, from every incident on the register.

Published 2026-09-29. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

See the register's stories first in Google: add it as a preferred source.

Chart to reuse with this story: Grid infrastructure incidents in the United States, by year, free with a credit (PNG).

Grid infrastructure incidents in the United States: 450 entries, with a free alert for the next one.

Substation and transformer fires: the counts, the latest entries and a free alert for the next one. Also: transformer explosions and power line and cable failures.

Browse the full register or submit an incident.