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.
Long-dated forward price curves dropped 24% at both Benmore and Otahuhu on Tiwai aluminum smelter exit announcements. 263 long-dated contracts were traded on 9 July, mostly maturing in 2021 and 2022. Tiwai load accounts for approximately 13 percent of national demand. NZAS has terminated its power supply contract which will end in August 2021.
On 31 March 2020, the Authority amended the Code to prohibit retailers from making contact with customers that had switched away and attempting to entice them back. The 31 March Code change prohibits this activity for a period of 180 days. This report shows trends in potential win-backs through time, based on what the trader responsible for the ICP enters into the registry. Customers are perfectly free to initiate contact with their previous retailer and may well choose to switch back. Hence, this report only provides an indicator of potential win-back behaviour. Users can investigate the impact of different win-back mechanisms and highlight how significant the activity is to each trader or parent company, relative to either switches away, or to ICPs won. For more insights, explore the report, or view a public dashboard   with a selection of report instances.
Two new win-back indicator reports treat a withdrawn switch and a switch-back the same as any ICP won by a trader. This allows win-back activity to be measured relative to other acquisition activities. The summary report compares win-back metrics for a period of time defined by the user. The figure below shows potential win-back activity on trader switches as a proportion of their ICP wins during the latest month. Users can hover over the bars to see the actual number of potential win-backs. For more insights, explore the report, or view a public dashboard   with a selection of report instances.
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.
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.
This report instance compares the last 5 weeks of final pricing demand in the Upper North Island as measures to combat the spread of Covid-19 have increased. Click the heading to drill into the report and change the series filter to show how demand responded in other regions.
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.