After the fire line moves through: inspecting the grid assets it left behind

What fire leaves behind

A wildfire does not have to touch a pole to damage it. Radiant heat degrades wood, softens hardware and cooks conductor fittings. Smoke and ash foul insulators, and a fire that burns through a stand of timber leaves a corridor full of trees that will fall over the next two seasons. The aerial view that shows a burn scar at a glance is not the view that shows which structures need work. The 2026 season left a lot of that work queued up. The joint North American fire outlook issued on 14 September counted 5,132 fires in Canada this season and an area burned of roughly 4.5 million hectares, in line with the ten year average, with several large fires named in British Columbia. Close to average still means hundreds of damaged structures and months of follow up.

Damage counts arrive before access does

The pattern is consistent. When a provincial utility assessed the Big Bar and Brunswick complexes in late July, it counted about three dozen transmission and distribution poles damaged on the west bank of the Fraser, plus a further five distribution poles needing replacement near Ainslie Creek. Access was the binding constraint: fire activity limited how quickly crews could reach assets even after the immediate threat receded. Restoration then runs at a scale that surprises people who have not done it. Clearing one townsite involved replacing around 200 destroyed poles and stringing more than six kilometres of line before re energization. After another fire and an accompanying windstorm, crews repaired or replaced nearly 75 poles to restore service to about 2,700 customers.

The inspection layer most programs underbuild Restoration work is visible, and the inspection that should bracket it is where programs cut corners, for an obvious reason: everyone is tired and the outage clock is running.

Three practices separate a usable post fire inspection from a rushed one. - Pre fire baselines. A corridor flown before the season gives you a comparison set. Without it, every finding is an argument about whether a pole was already leaning. - Asset level identification. Naming files by flight and date produces an archive. Naming them by structure produces a work plan. - Thermal after re energization. Load dependent defects appear under current, so a thermal pass on rebuilt sections catches connection problems that a visual sweep misses.

Drones are already inside the fire response Canadian agencies are not spectators.

In July, the BC Wildfire Service flew an uncrewed aircraft to carry out a burn ignition, a technique the agency said it had not used anywhere in Canada before, working the east flank of the Brunswick Creek fire across from Boston Bar. Crews described being able to see through smoke and watch exactly where the ignition was happening, which is the same argument inspection teams make for their own work: persistence, position and a recording. The practical translation for utilities and their contractors is a standing agreement instead of an emergency purchase. Flight authority, insurance, corridor coverage and crew availability should be settled before June, because nobody wants to negotiate paperwork during an evacuation order.

Takeaway

Treat the post fire inspection as a defined phase with its own budget line, its own file naming convention and its own cadence after re energization. Fire seasons are ending later in some regions and starting earlier in others, and the number of assets waiting for a second look only grows in the gap between them.