The Meridian Energy Ltd (ASX: MEZ) share price is in focus after the company reported national hydro storage rising to 155% of average and total August generation up 21.1% on last year.
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What did Meridian Energy report?
- National hydro storage at 155% of historical average by 7 September 2026 (from 128% a month prior)
- South Island storage reached 178% of average; North Island storage fell to 79% of average
- August 2026 generation was 1,432 GWh, up 21.1% year on year
- Meridian's August inflows were 145% of average, supported by wet conditions in the South Island
- Retail sales volumes in August dropped 4.7% compared to the same month last year
- Average generation price received fell 62.3% year on year in August
What else do investors need to know?
August saw record peak electricity demand in New Zealand, with Meridian and its peers supporting the grid through strong renewable generation and battery systems. Despite the headline drop in retail volumes, large business segment sales climbed by 5.1% compared to August 2025.
The company's hydro catchments remain healthy, with Waitaki storage at 161% of historical levels and Waiau at 172% by month's end. El Niño conditions are strengthening, which may mean drier conditions overall, but could also bring extra rainfall to the hydro catchments.
What did Meridian Energy management say?
Chief Executive Mike Roan said:
We and the sector comfortably met that demand peak in early August, through high renewable generation and the system benefits of North Island batteries. It was another sign of a system that's performing extremely well.
El Niño conditions continued to strengthen through August, and are building further, supporting Meridian's high winter-end storage levels. While El Niño may bring dry conditions, particularly in eastern regions, it can also bring increased rainfall to our hydro catchments, so we're optimistic of maintaining strong hydro storage through the summer.
What's next for Meridian Energy?
Looking ahead, Meridian expects its high hydro storage to provide flexibility heading into summer, even as El Niño weather patterns develop. The company continues to monitor regional rainfall closely while keeping an eye on electricity demand and market pricing.
Ongoing investments in hydro and wind capacity, as well as battery infrastructure, should help Meridian stay resilient and adaptable in New Zealand's changing energy landscape.
Meridian Energy share price snapshot
Over the past 12 months, Meridian Energy shares have declined 14%, trailing the S&P/ASX 200 Index (ASX: XJO), which has declined 1% over the same period.
