Meridian Energy has reported a significant increase in national hydro storage and inflows for the month of October 2025.
National hydro storage rose from 110% to 143% of the historical average, with South Island storage reaching 148% and North Island storage at 121%.
Meridian's monthly total inflows were 212% of the historical average, with Waiau catchment inflows at 218% of the average.
The company's Waitaki catchment water storage was also above average, at 151%.
In early November, snow storage in the Waitaki catchment was at 131% of the average.
Water storage in the Waiau catchment was 205% of the average.
The company attributed the increase in hydro storage and inflows to the windy and wet weather in October, as well as above or near average temperatures.
National electricity demand in October 2025 was 6.6% higher than the same month in 2024, while Meridian's retail sales volumes were 14.6% higher.
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