Customer Advice Notices (CAN)

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Customer Advice Notices include important information for market participants about events happening on the power system.

These notices are also available for interested parties and other stakeholders, including media and consumers. Subscribe to this page to receive an email notification when a new CAN is published. If you wish to receive notification when an Excursion Notice or GEN is issued you need to subscribe to these pages separately.

August
Notice Date
Notice CAN Low Residual Situation 800000291 Date
Notice CAN Huntly BESS (HLY11) to be classified as a Secondary Risk while commissioning (Update) 800000290 Date
Notice CAN Under-Frequency Event Confirmation 800000289 Date
Notice CAN Potential Short Fall or Low Residual Situation 800000281 Date
Notice CAN Low Residual Situation 800000279 Date
Notice CAN Outage Assessment for Islington-Norwood-1 outage 800000270 Date
Notice CAN Potential Shortfall or Low Residual Situation 800000274 Date
Notice CAN HVDC Round Power Status Change 800000271 Date
July
Notice Date
Notice CAN Variable Line Ratings 800000266 Date
Notice CAN HVDC Round Power Status Change 800000263 Date
Notice CAN Potential Low Residual Situation 800000262 Date
Notice CAN Low Residual Situation 800000261 Date
Notice CAN Low Residual Situation 800000260 Date
Notice CAN Outage Assessment for Islington-Norwood-1 outage 800000257 Date
Notice CAN New Bream Bay Transformers Permanent Constraint 800000255 Date
Notice CAN HVDC Round Power Status Change 800000251 Date
Notice CAN New Bream Bay Transformers Permanent Constraint 800000248 Date
Notice CAN Outage Assessment for Islington-Tekapo-B 1 outage 800000253 Date
Notice CAN Bream Bay Transformer Overload Protection Scheme (TOPS) 800000217 Date
Notice CAN Low Residual Situation 800000252 Date
Notice CAN Huntly BESS (HLY11) to be classified as a Secondary Risk while commissioning 800000237 Date
Notice CAN Special Protection Scheme Status 800000218 Date
Notice CAN Manap?uri Unit 4 (MAN G4) to be classified a s a Secondary Risk while commissioning 800000238 Date
Notice CAN Dannevirke Solar Farm to be classified as a Secondary Risk while commissioning 800000236 Date
Notice CAN Hawera_Ohangai Circuit Overload Protection Scheme (HWA_OHG COPS) 800000189 Date
May
Notice Date
Notice CAN Round Power Status Change 800000151 Date
Notice CAN Round Power Status Change 800000150 Date
Notice CAN Manapouri Inter-trip Enabled Stability Constraint 800000148 Date
Notice CAN Notice of change to South Island AC Risks 800000140 Date
Notice CAN HVDC Round Power Status Change 800000133 Date
Notice CAN New Demand Allocation Tool 800000132 Date
Notice CAN - Planned Outage - 800000116 Date
Notice CAN - Rangipo G6 to be classified as a Secondary Risk whilecommissioning - 800000111 Date
Notice CAN - Low Residual Situation - 800000107 Date
Notice CAN - Rangipo G6 to be classified as a Secondary Risk whilecommissioning - 800000103 Date
Notice CAN - Change to Winter ratings from 10-May-2026 07-00 to20-Oct-2026 06-59 - 800000101 Date
April
Notice Date
Notice CAN Planned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Planned Outage HVDC Pole 2, HVDC Pole 3 Date
Notice CAN HVDC Pole 2 Reduced Capability Date
Notice CAN Planned Outage HVDC Pole 3 Date
Notice CAN Planned Outage HVDC Pole 2 Date
Notice CAN HVDC Pole 2 Reduced Capability Date
Notice CAN HVDC Pole 2 Reduced Capability Date
Notice CAN RPO G6 to be classified as a Secondary Risk (CE and ECE) whilecommissioning Date
Notice CAN RPO G6 to be classified as a Secondary Risk (CE and ECE) whilecommissioning Date
Notice CAN RPO G6 to be classified as a Secondary Risk (CE and ECE) whilecommissioning Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Planned Outage HVDC Pole 3 Date
Notice CAN Planned Outage HVDC Pole 3 Date
Notice CAN Schedule publication to WITS Date
Notice CAN Schedule publication to WITS Date
February
Notice Date
Notice CAN ICCP and SCADA interruptions due to the planned update of the Transpower SCADA System Date
Notice CAN Planned Outage HVDC Pole 2, HVDC Pole 3 Date
Notice CAN Round power status change Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Round power status change Date
Notice CAN HVDC Pole 2 Reduced Capability Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Round power status change Date
Notice CAN Under-Frequency Event Confirmation Date
Notice CAN Planned Outage HVDC Pole 2, HVDC Pole 3 Date
Notice CAN Planned Outage HVDC Pole 2, HVDC Pole 3 Date
Notice CAN Planned Outage HVDC Pole 2, HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Unplanned Outage HVDC Pole 3 Date
Notice CAN Ngatamariki Unit 5 to be classified as a Secondary Risk whilecommissioning Date
Notice CAN Transmission Circuit Risk Reclassification Date
January
Notice Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Round power status change Date
Notice CAN Ngatamariki Unit 5 to be classified as a Secondary Risk whilecommissioning Date
Notice CAN Round power status change Date
Notice CAN Transmission Circuit Risk Reclassification Date
Notice CAN Transmission Circuit Risk Reclassification Date