Consultations

The system operator recommends that the causer of the 1 March 2022 under-frequency event was Genesis Energy Limited and the causer of the 5 May 2022 under-frequency event Meridian Energy Limited. The Authority’s draft determinations agree with the system operator’s recommendations. Any submissions received on this consultation will be considered by the Authority before it makes the final determinations of the causer of the under-frequency events.

The system operator recommends that the causer of the 2 May 2021 under-frequency event was Genesis Energy Limited. The Authority’s draft determination agrees with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of the causer of the event.

The system operator recommends that the causer of the 30 October 2020 under-frequency event was Genesis Energy Limited. The Authority’s draft determination agrees with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of the causer of the event.

The system operator recommends that the causer of the 4 February 2020 under-frequency event was Genesis Energy Limited. The Authority’s draft determination agrees with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of the causer of the event.

The Authority received reports from the system operator on the 13 and 14 December 2018 under-frequency events. The Authority’s draft determinations are that:

1. Genesis Energy Limited, is the causer of the first under-frequency event on 13 December 2018 at 2.25 pm
2. Transpower New Zealand Limited, as the grid owner, is the causer of the under-frequency event on 14 December 2018 at 12.20 pm.

Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer the event.

The Authority received reports from the system operator that recommends that the causer of the 9 February 2018 under-frequency event was Contact Energy Limited. The Authority’s draft determination agree with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer the event.

The Authority received a report from the system operator that recommends there was no causer of the first 2 March 2017 under-frequency event, and that Meridian Energy Limited is the causer of the second event on that day. The Authority’s draft determinations agree with the system operator’s recommendation on the second event, and recommends Transpower New Zealand Limited, as the grid owner, is the causer of the first event. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer for each event.

The Authority received reports from the system operator that recommends that the causer of both 11 and 15 June 2017 under-frequency events was Contact Energy Limited. The Authority’s draft determinations agree with the system operator’s recommendations. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer for each event.

The Authority received a report from the system operator that recommends that the causer of the 8 September 2016 under-frequency event was Transpower New Zealand Limited. The Authority’s draft determination agrees with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer.

The Authority received a report from the system operator that recommends that the causer of the 3 October 2016 under-frequency event was Contact Energy Limited. The Authority’s draft determination agrees with the system operator’s recommendation. Any submissions received on this consultation will be considered by the Authority before it makes a final determination of causer.