More than 44,000 Nova Scotia Power customers were without electricity across the Halifax region Friday evening after a failed piece of equipment at the Lakeside Substation triggered a major outage during a heat wave. The outage began at 8:01 p.m. and stretched across a large area from Bedford to East Dover and Ketch Harbour, with the utility initially estimating restoration by 11:59 p.m.
The disruption came on the hottest day of the year so far for the Halifax area, where temperatures reached about 34°C and felt closer to the low 40s with humidity. A heat warning remained in effect for mainland Nova Scotia as residents, businesses and emergency crews dealt with the sudden loss of power.
A widespread power outage across parts of the Halifax Regional Municipality on Friday evening left thousands of Nova Scotia Power customers without electricity after equipment failed at the utility’s Lakeside Substation. The disruption affected homes, businesses and public services during a period of extreme summer heat, while emergency crews responded to a fire at the facility and several elevator rescue calls.
Nova Scotia Power said restoration work began immediately after the outage was reported and advised customers to check the official outage centre for the latest information on restoration progress.
Equipment Failure Confirmed at Lakeside Substation
Nova Scotia Power confirmed the outage was caused by a failed piece of equipment at the Lakeside Substation, a key facility that distributes electricity to several communities in western Halifax. Utility crews were sent to inspect the damaged equipment, isolate the fault and begin restoration work.
Halifax Regional Fire and Emergency Services said firefighters responded after one of the substation components caught fire. Crews worked with Nova Scotia Power to secure the area while engineers assessed the damage and prepared the system for safe restoration.
The utility later corrected an earlier notification that incorrectly suggested salt contamination had caused the outage. It apologized for the error and confirmed the interruption was linked solely to an isolated equipment failure.
Communities Across Halifax Were Affected
Customers in Spryfield, Armdale, Purcells Cove, Sambro, Prospect, Terence Bay, Hatchet Lake, Beechville, Clayton Park, Timberlea and parts of Bedford experienced power outages. Service interruptions were also reported in communities extending toward East Dover and Ketch Harbour.
The blackout occurred during the early evening as temperatures remained unusually high. Many households temporarily lost air conditioning, internet access and refrigeration, while some businesses had to suspend operations until electricity was restored.
Emergency officials said firefighters responded to several elevator rescue calls after buildings lost power. Those incidents took place while crews continued dealing with the fire at the substation.
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Utility Says It Was Not a Load-Shedding Event
Following the outage, some residents questioned whether the heat wave and heavy use of air conditioners had overloaded the electricity system. Nova Scotia Power said the outage was not related to load shedding or excessive demand on the provincial grid.
Instead, the company said the interruption resulted from a localized equipment failure at the Lakeside Substation. That distinction is important because restoration efforts focus on repairing damaged infrastructure rather than managing electricity demand across the network.
Although the outage was unrelated to grid demand, losing electricity during extreme heat increased health concerns for older adults, young children, people with medical conditions and anyone relying on powered medical equipment.
Why One Substation Can Leave Thousands Without Power
Electrical substations serve as major connection points between high-voltage transmission lines and neighbourhood distribution systems. When a critical transformer or switching component fails, electricity can be interrupted across multiple communities until the damaged equipment is repaired or safely bypassed.
Power restoration typically happens in stages. Engineers first ensure the site is safe, inspect damaged equipment, restore critical circuits and then reconnect customers gradually to reduce the risk of additional faults.
During outages, officials recommend keeping refrigerator and freezer doors closed, avoiding indoor generator use, unplugging sensitive electronics where practical and checking on neighbours who may need assistance.
The incident follows other recent electrical disruptions in the region. Earlier this year, a Halifax hospital power outage that temporarily disrupted patient services highlighted how failures involving electrical infrastructure can quickly affect essential services beyond residential neighbourhoods.
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