Security of Supply


National hydro storage decreased 2 percentage points from 114% to 112% of average reflecting South Island hydro storage falling from 113% to 110% on the back of lower South Island inflows over the last week.

North Island storage has continued to rise to 121% of average. Inflows have returned to below average levels following last week’s significant inflow event.

A series of outages are planned at Pohukura, New Zealand’s largest gas field to early December. These come off the back of a medium term trend of production declines at the field. GIC estimates that production will be curtailed by between 20 and 50TJ for the duration of the outages.

National demand decreased to 726 GWh this week.

Renewable generation made up 87% of the mix.

Further information here.

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


Hydro Information

Further information here.

Storage increased in the North Island and decreased in the South Island over the last week, with South Island storage at 70% of full and North Island storage at 80% of full.


Market Indicators

Further information here.

Renewable generation over the last seven days was 87% of total generation, with hydro generation accounting for 58% 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.


Currently no consultations.