Hydro Risk Curves

Current Status

New Zealand  and South Island Hydro Risk Meter

The graphs below compare New Zealand and South Island controlled storage to the relevant Hydro Risk Curves.

As at 19 November, New Zealand controlled storage is above average and South Island controlled storage is just below average for the time of the year.  The risk meter for the New Zealand and the South Island is set to Normal.

Latest New Zealand Hydro Risk and South Island Hydro Risk Curves [ pdf 47.49 KB ]
Hydro Risk Curve Input Assumptions [ pdf 929.87 KB ] (Effective from 30 October 2017)
Hydro Risk Curve Data for 2017 and 18 [ xlsx 34.31 KB ] (Effective from 30 October 2017) 
Simulated Storage Trajectories [ pdf 222.03 KB ] (Updated 27 July 2017)
Simulated Storage Trajectories: Assumptions [ pdf 718.19 KB ] (Updated 27 July 2017)
Find out more about hydro risk curves
Security of Supply Animation