Meridian Energy lifts hydro storage and sales in November 2025 update

Meridian Energy lifts hydro storage and sales volumes in its November 2025 monthly operating report.

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Key points

  • Meridian Energy reported a significant increase in national hydro storage to 153% of historical average by early December 2025, with retail sales volumes rising 12.1% compared to the previous year.
  • November 2025 was marked by record warmth in New Zealand, contributing to high hydro inflows and supporting storage levels and increased generation, with a 93.3% rise in average generation prices compared to November 2024.
  • Despite an 8% decline in share price over the past year, Meridian benefits from strong electricity demand, increased customer connections, and continued investment in renewable energy, though weather and market dynamics are key watch points.

The Meridian Energy Ltd (ASX: MEZ) share price is in focus today after the company released its monthly operating report for November 2025, highlighting national hydro storage reaching 153% of historical average and a 12.1% rise in retail sales volumes compared to November last year.

What did Meridian Energy report?

  • National hydro storage increased from 143% to 153% of historical average by 8 December 2025.
  • South Island storage reached 157% of average, North Island storage climbed to 132% of average.
  • November 2025 inflows were 149% of historical average, with year-to-date inflows the highest since 1988/89.
  • Retail sales volumes in November rose 12.1% year on year, with residential segment up 23.2%.
  • National electricity demand was 5.9% higher than in November 2024.
  • Meridian's total New Zealand customer connections grew by 20% since November 2024.

What else do investors need to know?

November was the warmest on record for New Zealand, with temperatures above average in most areas and higher rainfall for the North Island and the west of the South Island. Despite drier conditions in the east, strong hydro inflows supported impressive storage levels.

Meridian's generation for November was 2.7% higher than the same month last year, mainly due to increased hydro output. Year-to-date generation is tracking 12.7% ahead of last year, and the average price received for generation in November rose 93.3% compared to November 2024.

Higher demand from New Zealand Aluminium Smelters Ltd (NZAS) also featured, with average load rising to 569MW from 451MW a year ago.

What's next for Meridian Energy?

Investors can keep an eye on Meridian's ability to maintain strong hydro inflows and storage as summer progresses, supporting both generation and retail sales. The company continues to benefit from rising electricity demand and expanded customer connections.

Ongoing investment in renewable energy and a focus on operational efficiency position Meridian well for future growth, though weather patterns and wholesale market dynamics will remain key factors to watch.

Meridian Energy share price snapshot

Over the past 12 months, Meridian Energy shares have declined 8%, trailing the S&P/ASX 200 Index (ASX: XJO) which has risen 5% over the same period.

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Motley Fool contributor Laura Stewart has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips. This article was prepared with the assistance of Large Language Model (LLM) tools for the initial summary of the company announcement. Any content assisted by AI is subject to our robust human-in-the-loop quality control framework, involving thorough review, substantial editing, and fact-checking by our experienced writers and editors holding appropriate credentials. The Motley Fool Australia stands behind the work of our editorial team and takes ultimate responsibility for the content published by The Motley Fool Australia

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