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Power Restored After Yucatán Peninsula Blackout Tied to Transmission Failure

A formal probe is underway to pinpoint the root cause to prevent a repeat.

Overview

  • The outage began early afternoon on September 26, cutting electricity to roughly 2.26 million users across Yucatán, Campeche and Quintana Roo.
  • Officials say maintenance on high‑voltage transmission lines triggered a cascading failure that disconnected nine plants and removed about 2,174 MW from the system.
  • CFE, CENACE and Sener executed staged reconnection, with authorities reporting full restoration to all affected users within hours, variously detailed as about 6 hours 21 minutes or by around midnight.
  • Operational details released by CFE include trips on 230 kV lines between Tabasco Potencia and Escárcega and subsequent 400 kV line trips identified as LT ESA A3Q20/A3Q30 TIC.
  • The blackout disrupted traffic signals, telecoms and water pumping as hospitals relied on backup power, while major cities such as Mérida, Valladolid, Chetumal and parts of Campeche were among the first areas re‑energized.