Promoting reliable electricity supply: A voltage-related Code amendment proposal

Upcoming Open Closed Decision

View submissions Submissions closed 15 July 2025

Consultation

This consultation sought feedback on a Code amendment proposal that would benefit consumers by, amongst other things, lowering the risk of power supply interruptions and electrical equipment not operating properly or being damaged.

The Authority proposed to amend the Code to:

place voltage support obligations on embedded generating stations that can export 10MW or more of electricity and which are connected at the same voltage as the connection between the distribution network and New Zealand’s transmission network, and
lower, to 10MW, the threshold for a generating station to not disconnect from a network during an electrical fault on the transmission network.

This consultation is part of our work programme to ensure New Zealand’s power system remains secure and resilient as increased electrification of New Zealand’s economy occurs over the coming years.

The proposal follows our consultation Addressing larger voltage deviations and network performance issues in New Zealand’s power system, which set out short-listed options to address this problem.

Thank you to those who engaged with this consultation. We are now considering all submissions and expect to publish a decision paper in early 2026.

Consultation paper