Te Mauri Hiko Monitoring Report - Q1 review

In 2018 Transpower launched Te Mauri Hiko – Energy Futures, aimed at stimulating industry discussion on what New Zealand’s energy future could look like. Taking a scenario-based approach, we considered what the year 2050 might bring, to begin to understand the opportunities and challenges we all need to focus on today.

Significant geo-political and technological changes are likely to increase uncertainty around the future, so it is critical we monitor the signs and drivers that underpin our scenarios.

Battery storage in New Zealand

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

We are seeking to play a strong role in enabling New Zealand’s energy future. Our recent publication Te Mauri Hiko and related thought pieces aim to inform the debate on how, through electrification, we can meet our goals to limit climate change.

Extended Reserve


AUFLS is the acronym for Automatic Under-Frequency Load Shedding and describes the set of relays in New Zealand which automatically trip blocks of load, following a severe under-frequency event, to restore the system frequency.

The System Operator relies on these relays to prevent system collapse following under-frequency events which have the potential to cause a system black-out.

Extended Reserve Project

What is this project about?

The Extended Reserve project has been reactivated by the Electricity Authority with a refined focus on achieving a secure transition to a 4-block automatic under-frequency load shedding (AUFLS) scheme in the North Island.

AUFLS is the mechanism used to shed large blocks of load to prevent the electricity system collapsing if there is a rapid fall in system frequency.