Security of Supply


As system operator every Thursday we update the weekly status of generation fuel required for power generation in New Zealand.

Hydro storage has continued to increase due to stronger inflows this week with national hydro storage rising to 95% of average.

Physical storage has surpassed 2100 GWh this week and as the NZ Electricity Risk Meter shows is firmly within the normal range.

Demand has continued to trend downwards due to the seasonal change.

The Taranaki combined cycle plant (TCC), the second largest thermal generation unit in NZ, started its scheduled outage on 13 October and is expected to be back in service by 24 October.

As mentioned last week, Kupe has a planned outage for the month of November affecting around 15% of New Zealand average gas production. Updates on this outage would be available in the Gas Industry Company page. The impact of this outage on electricity generation will depend on generators’ ability to organise alternative fuel arrangements.

Electricity Risk

New Zealand and South Island storage are both in the Normal range.


Hydro Information

Storage increased in both islands over the last week, with South Island storage at 49% of full and North Island storage at 81% of full.


Market Indicators

Renewable generation over the last seven days was 81% of total generation, with hydro generation accounting for 57% of total generation.


Policies and Publications

Includes information on the Annual Assessment and Transpower policies related to Security of Supply: the SoSFIP, EMP, and SOROP.



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