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%.

Photo: Ahuroa gas storage facility, South Taranaki
What helps keep New Zealand’s electricity system reliable?
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Underground Hydrogen storage
New Zealand has set a target of net zero emissions by 2050 – but what will that future look like?
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