AIES (Alberta Interconnect Electric System ) Event Log Info

The phrase 'Energy Emergency Alerts' is standard terminology defined by the North American Electric Reliability Council (NERC) for communication among coordinating agencies and control centres. It is used throughout the Western Electricity Coordinating Council (WECC), of which the Alberta Electric System Operator (AESO) is a member.

We provide energy alert notices in the Alberta Interconnected Electric System (AIES) Event Log on our Web site.

The AIES Event Log is a real-time report that is maintained by the system controllers in the AESO's System Coordination Centre (SCC).

The procedure describing how and when the AESO uses the alert messages and their definitions is documented in Alberta Reliability Standard (ARS) Emergency Operations EOP-011-AB-1.

As part of our role to plan and operate the Alberta Interconnected Electric System reliably, safely and economically, the AESO works with industry to coordinate planned generation maintenance schedules so that we can manage the system requirements.

At the AESO, it's our job to anticipate and plan for demands on the system and we have operating policies and procedures in place to manage contingencies and worst-case scenarios.

ARS Emergency Operations EOP-011-AB-1 defines four levels of energy emergency alerts.

For more information on the steps performed by the AESO in managing an Energy Emergency Alert event, refer to Information Document - Adequacy, Supply Shortfall and Energy Emergency Alerts ID #2012-006R.