05/10/2026
Transpower NZ’s latest Energy Security Outlook shows hydro storage is currently well above historic averages at 133%, while there is enough gas generation to provide flexibility when electricity demand is high or renewable energy is low. The outlook also highlights the role of gas stored at Ahuroa Gas Storage in supporting electricity security.
The Energy Security Outlook reinforces the value of having a mix of energy options available to help keep New Zealand’s electricity system reliable.
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It’s good news for New Zealand’s electricity system as we head into the final months of 2026. Transpower’s latest Energy Security Outlook shows national hydro storage sitting well above historic averages at 133%, with South Island storage at 142%.