Centralised dataset - web interface
Introduction
This page presents summarised electricity market data for the benefit of industry participants and members of the public. The data can be accessed through a query tool - but please read the disclaimer below before proceeding.
All the data available through the query tool are derived from the Centralised Dataset (CDS). Experienced users will likely prefer the full CDS, but casual users may prefer this web interface.
No software is required to use the web interface, though access to a spreadsheet may be helpful when working with large result sets.
If you have any questions, contact info@ea.govt.nz with 'CDS Web Interface' in the subject line of your message. Corrections and/or suggestions for improvement are also welcome.
What information is available here?
The data available currently include:
- Historical electricity consumption (total energy, peak)
- nationally, regionally, or at GXP level
- Historical electricity generation
- by generation type, by hydro system, or for individual plant
- HVDC transfers
- Wholesale nodal prices by GXP
- Instantaneous reserve prices.
All these data are available for annual, monthly or daily time periods.
How up to date is the information?
It is not expected that the data on this site will be kept up-to-date from month to month. As a rule, it will always be at least 1 month out of date, and sometimes 6 months or more (like the full CDS, which is only published twice a year).
Currently, the data cover the period to end of March 2013.
If you need up-to-date data, you should contact a commercial provider.
What information is not available here (and how can it be obtained)?
| Drill down to half-hourly level | You will need to obtain the full CDS if you want this level of detail. All data in the Web Interface are aggregated to a daily level. |
| More timely data | You will need to contact a commercial provider if you want more up-to-date information. |
| Wholesale market bids and offers, generation by unit (e.g. Huntly 6), reactive power metering, binding constraints, hydrology, network configuration information | All these data are available in the full CDS but not included here. |
| Retail market data | Not available in the CDS. Some retail data are available through the Retail market statistics of the Commission's website. |
| Reserve offers and cleared quantities | Not currently available in the CDS, though reserve prices are included in the full CDS and this web interface |
| Information about other ancillary services | Not available in the CDS. Some ancillary service data are available on the Frequency keeping data page in the Common Quality section of the Commission's website |
| AC transmission flows | Not available in the CDS, though HVDC flows are included in the full CDS and this website. |
If you want to request other information from the Authority, contact info@ea.govt.nz.