This page contains maps, services, and diagrams relating to Transpower assets.
Before you dig
If you are planning work near a Transpower asset, please use the BeforeUdig service rather than just using this data as there may be other services near the area from other companies.
Most of the data is publicly available under the Creative Commons Attribution 3.0 New Zealand License 3.0 CC-BY. You must attribute the data back to its original creator and have this license associated with the data at all times i.e. displayed on any maps, web sites, applications or printed material using this data.
You accept the terms when you use the data.
Some data is restricted and is only available to approved users or companies under a separate TP-Limited licence. These are clearly marked in the grid below. We may have other data available but not as a webservice, please contact the team at Geospatial@Transpower.co.nz if you have a specific request.
If you would like to access restricted data please click here for a form to request access.
|Service description||Service name||Under licence||Metadata location|
|Transmission Centrelines (owned by Transpower only)||Transmission lines||CC 3.0 CC-BY||Not yet available|
|Spans Centrelines (owned by Transpower only)||Spans||CC 3.0 CC-BY||MD-Spans|
|Structures (centre points)||Structures||CC 3.0 CC-BY||MD-Structures|
|Substations||Sites||CC 3.0 CC-BY||MD-Sites|
|Service Provider Boundaries (Contractor in charge of Transmission lines in an area)||LineAreaContacts||CC 3.0 CC-BY||Not yet available|
|Cook Strait Protection Zone for undersea cable||CPZ||CC 3.0 CC-BY||Not yet available|
|Access routes to transmission assets||Approved users only||TP-Limited||Not yet available|
|Transpower Fibre||Approved users only||TP-Limited||Not yet available|
GIS Data services
Some of Transpower's GIS data has been made publicly available to use in your own GIS system via various different types of web services or by download.
The data is refreshed every night, or when something changes, so is much more up-to-date than any static data you may have received from us in the past.
ArcGIS REST services can be accessed via the following link, under the "Public" folder: https://spatial.transpower.co.nz/arcgis/rest/services
For help, use this link for help on how to use the spatial site.
Details for the WMS and WFS services can be found by clicking the relevant link near the top left of each MapServer page.
Service Provider Boundaries and Cook Strait Protection Zone are only available through the services and not as a download.
Quick Extract Tool
Data extracts are available via this Quick Extract Tool link. Regional areas in the Quick Extract tool cover the extent of the Region but the data is not clipped to regional authority boundaries.
By accessing the geospatial data on, or from, this website you agree to and acknowledge the following terms and conditions of use. References to “Transpower” mean Transpower New Zealand Limited and its directors, employees and related companies:
- The data is provided on an "as is" basis. To the fullest extent permitted by law. Transpower:
- excludes all representations and warranties relating to the data, including in relation to any inaccuracies or omissions in it; and
- excludes all liability for loss or damage arising out of or in connection with your use of the data, whether or not such loss or damage was foreseeable, arose in the normal course of things or you advised Transpower of the possibility of the loss or damage.
- You should have the positions of assets and property boundaries confirmed on site before any design, construction or other works take place in reliance on the data.
- You will indemnify Transpower against all claims brought against Transpower by third parties that arise from your use of the data.
If you have any questions please contact: email@example.com
Map PDF downloads below are a representation of Transpower's Asset locations and may not be spatially accurate.