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Heat-Driven Blackouts in Bergamo and Florence Drive Power Restorations and Upgrade Talks

After crews fixed overheated medium-voltage cables, authorities are weighing long-term infrastructure reinforcements to prevent recurring summer outages.

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Overview

  • Power was largely restored in Bergamo shortly after July 1 and crews continue testing medium-voltage cables to achieve full normalization.
  • Enel attributed the failures to overheating and expansion of underground medium-voltage cables under high temperatures and heavy air-conditioner loads.
  • E-distribuzione pinpointed similar line trips in Florence’s central network and is replacing damaged cable segments to reinstate service.
  • Local authorities deployed ten police patrols to direct traffic at darkened intersections and used emergency generators to sustain critical services.
  • Experts from Politecnico di Milano have urged upgrading urban distribution systems with larger-section cables and more maintenance to withstand summer peak demands.