Outages

Each week, the Alberta Electric System Operator (AESO) compiles a report of all the planned transmission outages required by the transmission facility owners (TFOs) for transmission maintenance and switching activities. The AESO then studies the operation of the AIES under various possible contingencies, and creates contingency plans for the coming week. These contingency plans are then issued by the AESO’s System Controller as a weekly operational plan.  This section includes two reports: Long-term critical outages and approved outages.