Publications and resources

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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.

Our 2019/20 Annual Report is a print-friendly PDF file that includes our corporate governance and financial statements,...

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...

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

Tranpower's "Keys to Life" are our key safety expectations for Transpower staff and contractors. They are critical to individual safe work practices.

This 2017 Annual Review (online only) is an integrated report of our activities and their alignment to our strategic priorities. The 2017 Annual Report is a print-friendly PDF file that...

In Transmission Tomorrow, we predicted that in the future battery technologies will change the operation and role of the National Grid. Learn how we...

This factsheet provides information on the issues surrounding the growing and harvesting of forestry near transmission lines.