The deep freeze pushed electricity demand toward the limits of what the grid could supply. The utility says it remained in what it calls the “warning stage,” where customers are asked to cut back on energy use to reduce strain on the system.

While the cold did cause some localized outages on Sunday, NSP says those were equipment‑related and not part of any planned power cuts. The company says conservation efforts, combined with all generation sources running at full output, were enough to prevent broader disruptions.

The warning comes at a time when many Nova Scotians remain frustrated with NSP after recent billing errors, prolonged outages, and a cybersecurity breach. The utility says customers may be asked to help reduce demand during future cold snaps if the grid faces similar pressure.

Had customers not conserved energy, it is possible NSP would have had to resort to load shedding, which is their most extreme conservation measure utilized to avoid system-wide failure.

What does load shedding look like

Load shedding is a last‑resort measure used when electricity demand becomes higher than the grid can safely supply. During load shedding, power is briefly turned off to different parts of the province in rotating intervals, usually about 30 minutes at a time. The goal is to quickly reduce demand across multiple communities and prevent a province‑wide system failure.

Unlike localized outages, which affect only specific feeders, load shedding happens when strain is widespread across the grid. By cycling short outages between areas, utilities can keep the overall system stable until temperatures ease or supply increases.

NSP says customers can help avoid reaching that point by reducing the use of major appliances during peak hours, shifting activities like laundry to overnight, limiting hot‑water use, and unplugging electronics that aren’t needed.