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At a national level, hydro storage has remained below the tenth percentile since late June. The immediate risk to security of supply remains low due to thermal generation availability and declining risk curves from now until summer. Looking out to autumn next year, we are relying on the typically higher inflows over spring and summer to improve storage levels. This can be seen in our simulated storage trajectories, none of which cross the watch or alert curves for the next twelve months.
Over the past week national hydro storage has decreased by 2% to 64% of the historical average for this time of year. South Island hydro storage fell by 4% to 66% of average, with relatively low inflows. North Island hydro storage increased by 10% to 54% of average, with above average inflows for last week.
Nationally, weekly electricity demand rose by 5% to reach 803 GWh.
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