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Solar PVUnited KingdomEIR-1542

Fire at transformer building on solar farm in Treviscoe

Apr 2015Published 28 Sept 2026Responsible editor: Chief Editor

SignificantThermal / fire
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersMedium confidence
out of service for about •• daysShown in the record →Full estimate
From the recordFailed part hidden
Where
solar panel farm in Treviscoe, St Dennis, United Kingdom
What
Fire in a transformer unit building measuring 5 by 3 metres
Response
Fire and rescue crews isolated supply at 12:38 then extinguished the fire
Cause
Electricity supply to the building remained live on arrival

What happened

Fire and rescue crews responded to a fire in a transformer unit building measuring 5 by 3 metres on a solar panel farm in Treviscoe, St Dennis, United Kingdom. The alarm was raised by site staff. Crews adopted a defensive stance using carbon dioxide and dry powder extinguishers plus a covering jet. Firefighting could not begin until electricity supply to the building was isolated at 12:38. Two breathing apparatus wearers then extinguished the fire. Crews remained to damp down after the fire was out.

Contributing factors

Electricity supply to the building remained live on arrival, preventing immediate firefighting.

Lessons learned

  1. Transformer buildings on solar farms need clear isolation points because live supply blocks entry and firefighting.
  2. Site staff must give isolation details to crews at once so defensive tactics can end quickly.
  3. Defensive stance with covering jets is required until power is confirmed off in energised plant rooms.

More lessons on fire suppression and firefighting, electrical protection and isolation, design, standards and commissioning, from every incident on the register.

Not yet known

  • Exact cause of the fire
  • Transformer model and age
  • Duration of downtime
  • Cost of the damage

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

Source

db.cornwall.gov.uk

Published 2026-09-28. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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Chart to reuse with this story: Solar PV incidents in the United Kingdom, by year, free with a credit (PNG).

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Solar farm fires: the counts, the latest entries and a free alert for the next one.

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