A fundamental requirement of competitive and efficient electricity markets is access to reliable data and performance metrics.
This Electricity Market Information website (EMI) is the Electricity Authority's avenue for publishing data, market performance metrics, and analytical tools to facilitate effective decision-making within the New Zealand electricity industry.
The report instance shows a daily summary of wholesale prices for 2020. An impact of the 25 March lockdown and reduced demand is apparent on prices at the end of Q1.
2019 saw strong ICP growth from Meridian (up 5.7%), Electric Kiwi (up 48%), and Nova (up 23%)   who acquired Hunet during the year. Mercury saw the largest losses (down 6.7%). Along with Hunet, three other retailers exited the market, while six others entered.   Collectively, the top five retailers serve 86% of connections down from 97% a decade ago.
Transpower is undertaking major work on the HVDC during January - April 2020. This work will result in reduced capacity and some bipole outages. This chart shows the flow (MW) over the last four weeks. More information on the outages is available on Transpower's website.
November inflows returned national storage to above-average historical levels. Northward flow across the HVDC has increased. Contributing to the increase in national storage, Taupo has increased to above-average levels during the last month after lingering at below-average levels since September 2018. Each update to the 2020 ERCs is presented in a public dashboard on EMI. The official curves and more information on security of supply forecasting are available on the system operator's website.