Current Critical Contingency Events

This page is used to publish notices and updates that relate to a Critical Contingency Event which is currently underway. For information relating to historical Critical Contingency Events and Test Exercises, please refer to the Historical CC Events page.

21 May 2025 Exercise Tukurua

Situation: Exercise Tukurua - The CCO has issued curtailment instructions as per notice CC-0090 below.

Confirmation of the Critical Contingency Declaration given orally to the Transmission System Operator [CC-0089]

Direction to Curtail Demand Notice [CC-0090]

Notice to Retailers to Implement Media Appeals [CC-0091]

Any queries or feedback regarding the exercise can be sent to cco@cco.org.nz