Last updated: 24 Dec 2024
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Last updated: 25 Sep 2024
About ancillary services
We procure ancillary services to support the reliable operation of the power system and assist us to meet our Principal Performance Obligations
Last updated: 12 Dec 2023
Special protection schemes
Last updated: 17 Dec 2024
Event categorisation
Last updated: 04 Mar 2025
Security constraints
Last updated: 06 Mar 2025
Rolling outage plans
Last updated: 11 Mar 2025
Commissioning generation
The System Operator's commissioning generation process
Last updated: 30 Jan 2025
Asset testing
Information required from asset owners ahead of the testing of their assets
Last updated: 30 Jan 2025
Dispensations and equivalence arrangements
Apply for a dispensation or equivalence arrangement if you are not able to comply with a Code requirement
Last updated: 12 Dec 2023
Working with our regulator
We work with our regulator the Electricity Authority to operate and develop the electricity market to deliver long-term benefits to New Zealand consumers.