Publications and resources

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

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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.

In our role as system operator, Transpower has commissioned an external report to investigate the potential value of DER in a New Zealand context. This report broadly considers the value of...

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...

Advances in battery technology are expected to play an important role in enabling our energy future. Distributed Battery Energy Storage Systems (BESS) in New Zealand examines the operational...

We have undertaken an investigation of the Value of Lost Load (VoLL) to inform our expenditure decisions and regulatory applications. ...

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

On 2 March 2017, New Zealand experienced a major and complex power system event. The event resulted in the South Island power system splitting into two separate systems.