Member dashboards

NZAS operates the Tiwai aluminum smelter near Bluff. The energy consumed by the smelter is significant and equates to approximately 13% of national demand. On 9 July 2020 NZAS announced plans to close the smelter and that it'd given Meridian Energy notice to terminate the power contract, which will end in August 2021. This dashboard summarises the smelter demand in relation to each region and will track the monthly and dialy demand as the smelter operations wind down.

Market share, particularly within market segments have moved significantly in early 2020 raising questions about what is happening. There are several reasons for the observed changes. Firstly Meridian has migrated many ICPs they had previously recorded as residential into commercial and industrial market segments. In addition to this, market share is impacted by both switching and the establishment of new ICPs, with Meridian gaining substantially through both these avenues.

Updates of the 2020 ERCs. This follows on from the 2019 updates dashboard. Check the report notes for the black markers (more information tab after drilling into a report) to see what was driving the change to the curves in each update. Hover over the points in the charts to see how much the curves change with each update. New report instances will be added as updates occur.

This dashboard provides a quick look across selected win-back indicators for the latest month.

This dashboard highlights trends in potential win-back behavior via a variety of metrics over the last 24 months. These trends clearly show the impact of the 31 March 2020 ban on losing retailers contacting customers who switch away for a period of 180 days.

This dashboard shows various views of the market making activity report. Individual trading session results are shown for the current and previous two months, summarised results are shown for the current and previous five months. Hover over a trading session to see the date.

This dashboard highlights both the monthly trade volumes and open interest in quarterly base load futures products (monthly duration for open interest too). Report instances are grouped by maturity calendar year back to 2013 so it's easy to see the evolution of the market.

This Dashboard gives you a glance of the top 10 daily energy constrained-on amount allocated to a single dispatch station/block and the main cause of energy constrained-on in each case.

This Dashboard gives you a glance of the top 10 daily energy constrained-on amount allocated to a single dispatch station/block and the main cause of energy constrained-on in each case.

We have seen a decrease in energy constrained-on amount ($) in April and May 2019 but it seems to pick up again in June 2019 to present. This Dashboard gives you a glance of the top 10 daily energy constrained-on amount allocated to a single dispatch station/block and the main cause of energy constrained-on in each case.

Updates of the 2019 ERCs. Note that from 1 Aug 2019 contingent storage was included in the methodology. Check the report notes (more information tab after drilling into a report) to see what was driving the change to the curves in each update. Hover over the points in the charts to see how much the curves change with each update.

This dashboard shows the daily average and maximum wholesale price maps for the last seven days. It provides a quick comparison between days while highlighting any price separation between regions.

Monthly Switch Stats

The implied spot price for the remainder of the contract period is derived from the bid-ask spread (blue area) and trade (the red line) within the current contract periods (quarterly and monthly) at Otahuhu and Benmore.

Currently, generation companies receive constrained-on payments in addition to the spot price while they ramp-down generation output to meet new dispatch instructions. The presence of a high-priced offer in a trading period directly following a low-priced offer increases the likelihood of, and the amount received, via constrained-on payments. The constrained-on amounts shown in the headings are estimates. The Authority is currently consulting on removing these ramp-down constrained-on payments.

Installed Capacity and actual Generation

Generation trends for the major plant over the last two years. Only selected plant within hydro schemes is included. Wind generation is shown on a weekly basis to better show the energy contribution rather than daily volatility.

Whirinaki energy offers and cleared generation over the last seven days. The offer stacks present total energy offers, they have not be adjusted to account for cleared reserve. We hope to make this adjustment to the report soon.

McKee energy offers and cleared generation over the last seven days. The offer stacks present total energy offers, they have not be adjusted to account for cleared reserve. We hope to make this adjustment to the report soon.

Stratford energy offers and cleared generation over the last seven days. The offer stacks present total energy offers, they have not be adjusted to account for cleared reserve. We hope to make this adjustment to the report soon.

Huntly energy offers and cleared generation over the last seven days. The offer stacks present total energy offers, they have not be adjusted to account for cleared reserve. We hope to make this adjustment to the report soon.