Underground powerlines are an important part of GrandBridge Energy’s distribution system. While this infrastructure is protected from many weather-related impacts, underground cables are under electric stress and experience deterioration over time that isn’t visible from above ground. Predictive testing helps us better understand the condition of these assets and identify potential issues before they lead to equipment failure or unplanned outages.

As part of our ongoing asset management program, GrandBridge Energy conducts testing on sections of underground cable throughout our service territory. Specialized testing provides our teams with valuable information about the condition of the cable and its insulation, helping us identify signs of deterioration and determine where maintenance or future replacement may be required.

This condition-based approach helps us make informed decisions about our electricity infrastructure. Rather than relying on the age of equipment alone, testing provides additional information that can help us prioritize investments, plan maintenance and replacement work, and make the best use of assets that remain in good operating condition.

Typically, underground cable testing requires a temporary interruption to electricity service so crews can safely isolate and test the equipment. Customers affected by planned testing will receive advance notice with the date and expected outage window. While planned outages can be inconvenient, this proactive work is an important part of maintaining a safe, reliable distribution system and reducing the risk of unexpected equipment failures in the future.