On Saturday, a fault on the Labrador Island Link triggered an automatic underfrequency load shed, cutting electricity to an estimated 73,000 customers on the island of Newfoundland, according to Newfoundland Power. While most customers have since been re‑energised, significant outages linger in the Avalon Peninsula, Gander, and the Corner Brook‑Deer Lake region.

Underfrequency Load Shed Forces 73,000 Customers Offline

Newfoundland Power told CBC News that the load‑sheddnig event was a protective response to a sudden frequency drop on the Labrador Island Link, a key transmission corridor linking the province’s generation assets to the grid. The automatic system shed power from large blocks of customers to stabilise frequency, a standard practice when the grid is at risk of collapse.

Outages Persist in Avalon Peninsula , Gander and Corner Brook‑Deer Lake

Even after the bulk of the 68,000 restored customers regained service, the Newfoundland and Labrador Hydro social‑media update confirmed that the Avalon Peninsula, the Gander area and the Corner Brook‑Deer Lake corridor remain without power. residents in these zones continue to rely on backup generators and emergency shelters.

Scheduled Maintenance Compounded Saturday’s Disruptions

Two of the Saturday outages were not caused by the fault but were pre‑planned maintenance events in the Sunnyside‑Clarenville‑Bonavista Peninsula corridor and the Baie Verte Junction‑Sheppardville line.. The overlap of scheduled work with the unexpected load shed amplified the overall impact on customers.

Historical Context: Similar Grid Events on the Island

Newfoundland has experienced comparable underfrequency incidents in 2019 and 2021, each prompting brief but widespread outages. those past events led to upgrades in frequency‑monitoring equipment, yet the Labrador Island Link remains a critical choke point that can still trigger system‑wide load shedding.

Who Will Investigate the Root Cause?

Regulators have yet to name a definitive cause for the trip, and Newfoundland Power has not released a technical report. The province’s utility watchdog, the Newfoundland and Labrador Utilities Board, is expected to launch an inquiry, but details on timing and scope remain unclear .