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… © Transpower New Zealand Limited. All rights reserved. ii Report Purpose To provide information on ancillary service … 09:00 A grid emergency was declared to remove South Island transmission circuits from service to assist with managing … 10:45 A grid emergency was declared to remove North Island transmission circuits from service to assist with managing …

… of 2023 we published the 2024 Credible Event Review Scope report signalling what we would study during the 2024 … running under the Cook Strait, is a major part of the transmission system which enables the transport of … to identify and review the events deemed credible on the transmission system and to determine if the classification …

… of 2023 we published the 2024 Credible Event Review Scope report signalling what we would study during the 2024 … running under the Cook Strait, is a major part of the transmission system which enables the transport of … to identify and review the events deemed credible on the transmission system and to determine if the classification …

… the SOROP 4. The SOROP is one of our key security of supply planning and policy documents. 5. The SOROP is intended to … for shortages of electricity supply and shortages of transmission capacity. • Energy savings targets are aligned … the required weekly information and ensure that this reporting can be done online if possible. This will make the …

… TRANSPOWER NEW ZEALAND | System operator initial report: Northland loss of supply i Contents 1 Introduction … at 09:00 Saturday 11 May 2024 to remove South Island transmission circuits from service in accordance with its … in power systems with significant lengths of east-west transmission lines in the higher latitudes (greater than 45º …

… 2024 Interconnection Asset Capacity and Grid Configuration Report Data ..... 1 1.1 Background … and interested participant understanding of our Outage Planning processes and to improve transparency of Transpower … discussed the proposed outage plan with each designated transmission customer and interested participant on an …

… 2023 Review October 2023 About this document 2 Purpose This report reviews the performance of the electricity system and … is a significant asset failure in the generation fleet or transmission network) and sufficient fuel available to … in different ways. Peak demand The failure of generation or transmission assets impacts the ability to meet peak demand. …

… to the counterfactual (i.e., where no investment in the transmission network occurs).2 Further details on our … in Table 3 of our NZGP1.1 Proposal to the Commission we reported net benefits of $66m if Tiwai’s closure was delayed … NZGP1.1 MCP Attachment D – Scenario and Modelling Report – September 2023. …

… need for accurate, validated generator dynamic models. This report provides updates for future committed generation … generators’ inertia and fault current contribution, transmission interconnection, load characteristics, and … by standard WECC models. • Other wind and flexible AC transmission systems (FACTS) were either validated or …

… ALL RIGHTS RESERVED The information contained in the report is protected by copyright vested in Transpower New Zealand Limited (“Transpower”). The report is supplied in confidence to you solely for your … 11 3.5 HVDC Transmission System … 12 3.6 AC Transmission System …