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Customer Advice Notices (CAN)

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We send Customer Advice Notices regarding events happening on the power system.

The website publishes all CANs that are sent out from the System Operator. Subscribe to this page to receive an email notification when a new CAN is published.

AugustDate
CAN New Manual Constraints (HWA_SFD_1) [  442.65 KB ]05/08/2021
JulyDate
CAN New Permanent Manual Constraint (KAW_T13_P_1) [  470.86 KB ]29/07/2021
CAN Unplanned Outage HVDC Pole 3 [  368.5 KB ]26/07/2021
CAN Unplanned Outage HVDC Pole 3 [  368.1 KB ]26/07/2021
CAN Turitea Wind Farm will be classified as a secondary risk [  297.5 KB ]19/07/2021
CAN Turitea Wind Farm will be classified as a secondary risk [  297.31 KB ]19/07/2021
CAN Impacts on System Operator with the potential removal of RegionalCoincident Peak Demand [  300.74 KB ]19/07/2021
CAN Low Residual Situation [  302.81 KB ]13/07/2021
CAN Low Residual Situation [  303.59 KB ]12/07/2021
CAN Tauhara A G1 will be classified as a secondary risk [  445.88 KB ]09/07/2021
CAN Change in the North Island load not providing AUFLS due toreduction in load at Norske Skog Tasman, Kawerau [  132.13 KB ]05/07/2021
CAN Arapuni G8 will be classified as a secondary risk [  443.35 KB ]01/07/2021
JuneDate
CAN Tauhara A G1 will be classified as a secondary risk [  299.18 KB ]30/06/2021
CAN Tauhara A G2 will be classified as a secondary risk [  444.34 KB ]27/06/2021
CAN Arapuni G8 will be classified as a secondary risk [  298.47 KB ]25/06/2021
CAN Tauhara A G2 will be classified as a secondary risk [  300.87 KB ]25/06/2021
CAN Grid Owner review of Kawerau regional system power flows [  293.5 KB ]24/06/2021
CAN Tauhara A G2 will be classified as a secondary risk [  299.23 KB ]21/06/2021
CAN Changes to Transpower's Scheduling, Pricing, and Dispatch (SPD)software [  266.29 KB ]17/06/2021
CAN Tauhara A G2 will be classified as a secondary risk [  295.97 KB ]17/06/2021
CAN Changes to the Reserve Management Tool (RMT) [  139.62 KB ]16/06/2021
CAN Transmission Circuit Risk Reclassification [  315.21 KB ]15/06/2021
CAN Arapuni G8 will be classified as a secondary risk [  294.87 KB ]14/06/2021
CAN Impact of Canterbury Flooding [  298.71 KB ]03/06/2021
CAN Temporary reduction to offload times during Clutha and UpperWaitaki Lines Project outages (Refer CAN Ref: 3700368592 05 November 2020 andCAN Ref: 3685077424 23 October 2020) [  443.75 KB ]03/06/2021
CAN Impact of Canterbury Flooding [  287.95 KB ]01/06/2021
MayDate
CAN Tauhara A G2 will be classified as a secondary risk [  296.83 KB ]28/05/2021
CAN Tauhara A G1 will be classified as a secondary risk [  294.97 KB ]28/05/2021
CAN Tauhara A G1 will be classified as a secondary risk [  293.45 KB ]25/05/2021
CAN Tauhara A G2 will be classified as a secondary risk [  296.94 KB ]24/05/2021
CAN Tauhara A G2 will be classified as a secondary risk [  294.54 KB ]19/05/2021
CAN Managing a Potential Electrical Island [  289.33 KB ]18/05/2021
CAN Managing a Potential Electrical Island [  288.62 KB ]18/05/2021
CAN Changes to the Reserve Management Tool (RMT) [  132.23 KB ]17/05/2021
CAN Clutha and Upper Waitaki Lines Project update and outage changes [  131.91 KB ]10/05/2021
CAN Under-Frequency Event Confirmation [  144.96 KB ]04/05/2021
CAN Change to Winter ratings from 10-May-2021 07:00 to 20-Oct-202106:59 [  302.09 KB ]03/05/2021
AprilDate
CAN Planned Outage HVDC Cable 6 [  489.07 KB ]30/04/2021
CAN Piripaua G5 will be classified as a secondary risk [  444.21 KB ]09/04/2021
CAN Transmission Circuit Risk Reclassification [  310.9 KB ]01/04/2021
CAN Transmission Circuit Risk Reclassification [  188.63 KB ]01/04/2021
CAN Transmission Circuit Risk Reclassification [  189.65 KB ]01/04/2021
CAN Transmission Circuit Risk Reclassification [  188.92 KB ]01/04/2021
CAN Piripaua G5 will be classified as a secondary risk [  174.36 KB ]01/04/2021
MarchDate
CAN Unplanned Outage HVDC Pole 3 [  230.56 KB ]23/03/2021
CAN Clutha and Upper Waitaki Lines Project (CUWLP): update and outagechanges [  272.87 KB ]18/03/2021
CAN Waipipi Wind Farm classified as a secondary risk [  254.9 KB ]11/03/2021
CAN Change to Shoulder ratings from 15-Mar-2021 07:00 to 10-May-2021 [  129.91 KB ]08/03/2021
FebruaryDate
CAN Huntly U5 frequency response test using Huntly U4 load rejection [  173.46 KB ]26/02/2021
CAN Planned Outage HVDC Pole 2, HVDC Pole 3 [  239.98 KB ]11/02/2021
CAN Application of a Manual Security Constraint in the Upper SouthIsland [  178.74 KB ]10/02/2021
CAN Application of a manual security constraint in the upper SouthIsland [  178.25 KB ]10/02/2021
JanuaryDate
CAN Ngawha B Station will be classified as a secondary risk. [  177.14 KB ]27/01/2021
CAN Marton Whanganui Circuit Overload Protection Scheme [  173.35 KB ]21/01/2021
CAN Transmission Circuit Risk Reclassification [  189.61 KB ]03/01/2021
CAN Unplanned Outage HVDC Pole 3 [  230.57 KB ]03/01/2021
CAN Unplanned Outage HVDC Pole 3 [  231.01 KB ]03/01/2021
CAN Unplanned Outage HVDC Pole 3 [  230.57 KB ]02/01/2021
CAN Transmission Circuit Risk Reclassification [  176.72 KB ]02/01/2021
CAN Transmission Circuit Risk Reclassification [  175.75 KB ]02/01/2021