Publications and resources

A supporting document to our Integrated Transmission Plan, the Asset Management Plan explains how we undertake asset management.

Transpower regularly publishes a Transmission Planning Report (TPR) which details the grid asset capability over the next 15 years. ...

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Each year, Transpower publishes a Grid Outputs Report which provides our customers and stakeholders with a summary of the performance of our regulated transmission business over the past...

This guide is to help you plan your work around Transpower transmission lines.

To protect tower foundations from corrosion we may employ cathodic protection as an alternative to encasing foundations in concrete.  This work overview explains how this is undertaken...

A best practice guide on the management of trees around transmission lines.

Flying near power lines is dangerous as the conductors (wires) can be difficult to see.

Transpower regularly publishes a Transmission Planning Report (TPR) which details the grid asset capability over the next 15 years. ...

In the rare event of a lightning strike or fault on the transmission line, towers or poles may transfer high voltage and dangerous currents into the ground for a very short instant. This is...