On 9 Aug 2021 the country faced the largest demand peak in response to one of the coldest nights of the year. As system operator, we called a Grid Emergency when insufficient generation was available to meet demand, leading to some customers being disconnected. A number of reviews of this event are underway including an independent review commissioned by Transpower to help us understand the event and industry’s response on the night, to identify where we need to make changes.
Information related to RCP3 will be updated here regularly.
Integrated Transmission Plan (ITP)
The ITP is a suite of documents outlining our ten-year plans. It brings together our services, expenditure forecasts and asset management plans. A link to each document is available below.
Transpower has today welcomed the Commerce Commission’s approval of a grid output amendment for Transpower’s Bombay Ōtāhuhu Regional Major Capex Proposal (MCP).
Information contained in the submission for Regulatory Control Period 1 may be found on the Commerce Commission website, here.
NMIR was implemented to take advantage of the new HVDC controls that enabled reserve response from one island to cover AC events in the other island. These changes reduced the amount of reserves required to maintain system security, releasing more generation from the reserve market to the energy market, creating market benefits.
Prudent Discount Policy (PDP) Consultation
Questions and answers are listed by reverse chronology - the most recent questions and answers appear first. When more than one question is asked in a single email, questions are numbered within each date entry.
We provided regular progress updates on our work as we developed a TPM proposal for the Authority, including information about engagement opportunities and consultations. The Authority is now consulting a proposed TPM.