Hydro Risk Curves

Current Status

New Zealand Hydro Risk Meter
South Island Hydro Risk Meter

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

As at 17 September, New Zealand controlled storage is slightly above average for the time of the year and South Island controlled storage is below average. 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 46.69 KB ]
Hydro Risk Curve Input Assumptions [ pdf 927.23 KB ] (Effective from 11 September 2017)
Hydro Risk Curve Data for 2017 and 18 [ xlsx 36.48 KB ] (Effective from 11 September 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