Resources

… Margin (SI-WEM): adequacy of generation and north-to- south transmission capacity to meet expected South Island … Our quarterly Security of Supply Outlooks will then report how investment by the market is tracking against the … information supplied by operators to inform security planning. Noted. Fonterra The Gas reference supply case …

… should the status escalate Current key activities Updating reporting as per routine Next steps No further action … for these in our decision • A wider review of the risk reporting framework is required • SOS processes and … you, and key updates • Review your outages (Generation or transmission) that negatively impact hydro, cancel or defer …

… 10 3. Planning … flow of electricity across Transpower’s high-voltage transmission network. We are responsible for ensuring … you will provide modelling files and a connection studies report. ▪ Validated power system models: the System Operator … to prepare two important datasets as part of a data transmission contract. These are: ▪ a set of indications and …

… the risk of the loss of a large generating unit or transmission circuit triggering operation of Automatic Under … Part D: North Island and South Island 220 kV Grid Backbone reports. 4 Security of Supply Annual Assessment | Transpower https://www.transpower.co.nz/system-operator/planning-future/security-supply-annual-assessment SYSTEM …

… to require models be submitted in the TSAT format – most transmission system operators (TSOs) internationally require … of the CACTIS requirements into their project budgets and planning. This lack of clarity on treatment of existing … frames for asset owners to submit a final connection study report, and for the system operator to review it? Yes. Q12. …

… 18 5.3 Validation Report Requirements … Generation Commissioning Process Feasibility Initiation Planning Delivery Commissioning Closeout GL-EA-716 Power … substation where a transformer steps up the voltage to the transmission level. The aggregated model described in the …

… 4.1 to 4.5 below, these form the base assumptions for this report: ▪ Studholme is supplied from Waitaki in Winter, with … before the voltage and thermal issues identified in this report, particularly for planned outages of 220 kV circuits … ceases operation in 2025, this will be the only remaining transmission constraint binding in this scenario for both …

… in the 2 Note the total in the Figure 1 also includes transmission losses which is supplied by generators. 3 A … | Transpower https://www.transpower.co.nz/system-operator/planning-future/security-supply-assessment#2025 TRANSPOWER | … record-low total inflows, placing pressure on generation planning heading into winter. These conditions reinforced …

… unit commitment or wind generation if a large generation or transmission asset fails. Market update Energy: National … commitment or wind generation should a major generation or transmission asset not be available/trip during May. Firm … finalising our draft Security of Supply Assessment (SOSA) report in preparation for consultation. Next SO Forum will …

… of a new or modified connection: ▪ before the completion of planning for the construction (Planning ACS) ▪ at, or … New Zealand’s electricity system, along with a summary of transmission charges. ▪ GL-EA-953 Connection Study Guide for … commissioning documentation and test results. Commissioning reports should confirm prior performance assessments and the …