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Inflows into controlled storage have been low by historical measures since the start of September. These lower inflows coupled with reduced gas availability have resulted in hydro storage being drawn down to historically low levels for this time of year. The system operator also adjusted the treatment of Tekapo summer contingent storage (denoted as 1 October – 31 March) so that from 29 August 2018 it is excluded from the HRC framework. This change removes 220GWh from controlled storage over summer for New Zealand and the South Island. The change has brought the treatment of Tekapo contingent storage into line with the treatment of other contingent storage and the SoSFIP. Each update to the 2019 HRCs is presented in a public dashboard on EMI. Official curves and more information on security of supply forecasting is available on the system operator's website.
Wholesale prices remain high due to tight supply following a sustained period of lower inflows, below average storage, and restricted gas availability. Prices peaked at a daily average $545.70/MWh on 23 October, the highest daily average since 26 March 2011 where they reached $590.09/MWh after being administered. Average demand weighted prices for the month of October were $301.64/WWh.
The chart below shows offers for a thermal generator where the length of the bars (offers) are reduced during part of the day - potentially a result of reduced fuel availability. In this example, we show offers and cleared energy from Stratford on 17 October. Using new EMI features, I've published several public dashboards that always show offer stacks for the last seven days for selected thermal plant. You can use these new features to share your dashboard with a colleague or make it available to everyone. Following a shared or public dashboard promotes it to your following list accessible via 'My dashboards' on the main menu. Make sure you click 'grid view' at the top of the page to see the report instances displayed as a set.
Category - EMI features and tips 15 days ago
Category - EMI features and tips 6 days ago
Category - EMI features and tips 15 days ago
Category - EMI features and tips 30 days ago
Category - Environment 7.1k this week
Category - Wholesale 1.8k this week
Category - Retail 1.4k this week
Category - Environment 7.1k this week
Category - Wholesale 1.8k this week
Category - Retail 1.4k this week
Owned by:
Matthew Keir
Generation trends for the major plant over the last two years. Only selecte ...
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.176 9 days ago
Owned by:
Matthew Keir
Updates of the 2019 HRCs. Note that the treatment of Tekapo contingent stor ...
Updates of the 2019 HRCs. Note that the treatment of Tekapo contingent storage changed from 29 August 2018. 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.133 7 days ago
Owned by:
Matthew Keir
McKee energy offers and cleared generation over the last seven days. The of ...
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.71 29 days ago
Owned by:
Matthew Keir
Generation trends for the major plant over the last two years. Only selecte ...
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.18 reports 176
Owned by:
Matthew Keir
Updates of the 2019 HRCs. Note that the treatment of Tekapo contingent stor ...
Updates of the 2019 HRCs. Note that the treatment of Tekapo contingent storage changed from 29 August 2018. 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.9 reports 133
Owned by:
Matthew Keir
McKee energy offers and cleared generation over the last seven days. The of ...
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.9 reports 71
Category - Environment Today
Category - EMI features and tips 6 days ago
Category - Environment Today
Category - EMI features and tips 6 days ago