Member dashboards

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.

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.

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.

Updates of the 2021 ERCs. This follows on from the 2019 and 2020 ERC update dashboards. 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.

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.

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.

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.

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.

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.

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.

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

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.