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System security and resilience
Open Consultations

Unlocking the benefits of battery energy storage systems

We’re working to ensure we have the right regulatory settings in place to unlock the benefits of battery energy storage systems.

  • Wholesale

    • Open consultations

    Common quality and wholesale market arrangements for BESS and BESS-hybrids

    Submissions due by 30 June 2026

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    Wholesale market arrangements for battery energy storage systems: Code amendment consultation

    Submissions due by 30 June 2026

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    Overview

    We're seeking feedback on the above two consultations to support the growing role of battery energy storage systems in New Zealand’s power system.

    We have also released a discussion paper on the costs and benefits of moving to a five-minute settlement period. We considered whether this would better align settlement with the capabilities of fast‑responding technologies such as BESSs. The Authority’s current view is that market conditions do not support a transition to five‑minute settlement at this stage.

    We welcome your feedback to OperationsConsult@ea.govt.nz by 30 June 2026.

    Timeline

    Past activity

    Background

    Battery energy storage systems (BESS) are becoming increasingly important as New Zealand transitions to a more intermittent and variable power system.

    During this transition, BESS will provide opportunities to enhance the resilience of the power system. As well as improving energy security, they also offer financial opportunities for consumers. While BESSs offer benefits, they can also present challenges for network operators if not managed properly.

    We’re working to ensure we have the right regulatory settings in place to unlock the benefits of BESS and manage any challenges they may present to our power system. Our work programme for the next two years is set out in our BESS roadmap.

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    Future security and resilience

    Ensuring our electricity system remains secure and resilient for New Zealand's low-emissions energy transition.

    Have your say

    Submissions open until 30 June 2026

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    Industry Exercise

    Practicing processes and communications for managing and responding to a major power system event.

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    Managing peak electricity demand

    How to better manage risks to electricity supply during peak demand periods.

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