Future security and resilience indicators refreshed

We’ve refreshed the Future Security and Resilience (FSR) indicators and transitioned them to our new platform. These indicators are now directly embedded in our website, replacing the previous indicators on our external site.

Please note the old link is no longer being updated. If you’ve saved it as a bookmark, we recommend replacing it with the new webpage.

FSR indicators support decision making when prioritising activities

The FSR indicators are a key part of our FSR work programme. They’re designed to provide a low-cost way to support decision-making and help prioritise activities that ensure New Zealand’s power system remains secure and resilient in the coming decades.

The system inertia indicator has been enhanced to improve its usefulness

The system inertia indicator’s enhancements are:

• Island-level monitoring, to provide separate measurements for the North and South islands.
• Minimum inertia thresholds for each island based on a recent study by the System Operator. These thresholds represent a conservative estimate of the minimum inertia required to maintain system stability.

These improvements reflect how we’re using the indicators in practice, to monitor inertia trends, identify emerging risks to our power system and prioritise actions as our power system evolves over time. This is important as the number of inverter-based resources connecting to our power system continues to increase.

We are open to hearing about other indicators or improvements that may be useful as we continue to monitor the opportunities and challenges to the power system. If you have any suggestions or feedback on the FSR indicators, please get in touch at fsr@ea.govt.nz.