Transpower have recently announced the availability via online services of some of its core data layers with a CC BY license.
This is a great example of organisations sharing their core datasets via online API's through the creative commons licensing model.
This sharing allows each consuming organisations to have access to update to date and relevant data for their own purposes straight from the source.
Below is the detail that Transpower released on their openData services.
Geospatial data layers are now available via as map services on the Transpower websitehttps://www.transpower.co.nz/resources/maps-and-gis-dataWe encourage GIS users to reference these map services instead of any older data supplies which you may have. The map service layers are kept up to date for changes to the Transmission network. The transmission network is largely static but changes do take place when lines are realigned.Data updates will also help to show which infrastructure is currently owned by Transpower as a number of assets have been transferred to Network Companies in the recent past.The layers which are available as part of our initial release are outlined below. Please get in touch if you have any questions relating to this service.Contact details for Transpower re: these GIS Services is firstname.lastname@example.org