Public Advisory: Planned Maintenance Work Continues

*Please note dates  for the transmission line work listed below has been rescheduled  to begin on May 20.

May 11, 2015 –

Newfoundland and Labrador Hydro (Hydro) is advising of planned maintenance work on electrical equipment and infrastructure over the coming days.

  • The energization of a transformer at the Holyrood Generating Station is taking place today (May 12) and will require a transmission line and the combustion turbine to be removed from service for a three to four hour period.
  • One of the main transmission lines (Sunnyside to Come By Chance) that connects the Avalon Peninsula to the remainder of the Island power system will be removed from service from May 13 until May 31.  This is required to complete terminal equipment replacement and maintenance. The system is designed to meet peak demands even when one line is out of service.

There are no anticipated customer impacts related to this preventative maintenance work.

This work, as with all planned maintenance work, has been carefully evaluated to eliminate or minimize potential customer impact and is essential to protect and maintain the integrity of the provincial power system.

Hydro’s annual maintenance program is part of the Company’s mandate to ensure delivery of safe and reliable electricity for customers.  Hydro is committed to keeping  customers informed on the status of the electricity system and significant system events.

As a precautionary measure, Hydro would like to remind customers of the importance of being prepared and staying safe in the event of outages. For more information visit,

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