Understanding Grid Alerts

Understanding Grid Alerts

Grid alerts are triggered by various factors, including extreme weather conditions, unexpected power outages, and tight supply margins. These alerts are critical signals that prompt us to take decisive actions to maintain the stability and integrity of the power grid. AESO is monitoring for these factors and directs ATCO Electric and other Transmission Operators to take action. Our commitment to transparency means we keep our customers well-informed, providing timely updates and guidance during these critical events. Ensuring the safety and reliability of our services is our utmost priority, especially during challenging times.


A grid alert is issued when the Alberta power system faces stress, potentially requiring emergency reserves to maintain reliability. These alerts are crucial in safeguarding our grid's integrity.

When facing challenges to the power grid, the Alberta Electric System Operator (AESO) directs power companies in the province to reduce electricity consumption. This is called “load shedding” and it is used to help alleviate the strain on the electrical system.


When there is a grid alert issued, AESO issues a directive to Electric companies like ATCO to reduce electricity usage by turning off the power, that could potentially cause power interruptions. ATCO’s goal would be to ensure that the impacts are as temporary and as minimal as possible to all customers. Our priority is always to maintain safe and reliable electricity for our customers.


When a grid alert is issued, every action counts. Here are simple steps you can take to reduce your energy consumption:

  • Turn off unnecessary lights and appliances.
  • Unplug devices not in use to save standby power.
  • Schedule energy-intensive tasks for off-peak hours (avoid running appliances between 4 – 7 p.m.).
  • Adjust your thermostat for optimal energy use.


For real-time updates and to learn more about grid alerts, visit the AESO homepage or follow @theAESO on X. Download the "My ATCO Electricity" app or visit our outage map for the latest information. 

As always, safety remains our top priority. In the case there are power impacts, our dedicated teams will be working swiftly to restore power safely and efficiently, ensuring minimal disruption to affected areas.