The weather has given Meridian Energy (ASX:MEZ) a cleaner story than it had a year ago.
That does not make the story simple.
New Zealand’s largest renewable electricity generator is heading into the end of FY26 with stronger hydro storage, a recently approved long-term operating consent for the Waitaki Power Scheme, and a development pipeline that keeps getting more visible. The next question is whether those advantages show up as durable earnings, or whether they remain too tied to weather, wholesale prices and project timing.
Meridian’s latest operating update showed national hydro storage at 125% of historical average by 8 June 2026, up from 119% a month earlier. Its financial-year-to-date inflows were 118% of historical average, the highest year-to-date level since 1998. That is a very different backdrop from the drought-hit conditions that weighed on the prior year.
The Lake Levels Are Doing the Talking
For Meridian, water is not background noise. It is inventory.
The company’s May update showed the Waitaki catchment at 106% of historical average at the end of the month, while the Waiau catchment sat at 48%. That split matters because it keeps the story from being too neat. The wider system looks well supplied, but not every catchment is equally strong.
Management’s line was more confident. CEO Mike Roan said consistent inflows and careful management of southern hydro lakes had removed the risk of a significant drought this winter, while also allowing Meridian to keep momentum into the end of the financial year.
That is the heart of the current setup. Meridian is not trying to explain a crisis. It is trying to show what the business can earn when the system is working in its favour.
Waitaki Is the Quiet Asset With Loud Consequences
The more important announcement may not be the monthly operating report. It may be the Waitaki decision.
On 16 June 2026, Meridian said the Environment Court had given final approval for the Waitaki Power Scheme to keep operating for another 35 years. The scheme includes six power stations, 1,553MW of installed capacity, and almost 30% of New Zealand’s installed hydro capacity. Meridian said the decision lets it retain current storage, operating conditions and generation capacity.
That is not flashy. It is the kind of asset certainty a utility investor usually cares about.
The market can debate short-term wholesale prices, retail volumes and weather risk. Waitaki is a different matter. It is about the licence to keep operating a core part of the generation base. It also gives Meridian room to explore more storage and generation opportunities on the scheme, according to management.
The caution is that consents are not earnings by themselves. They protect the platform. They do not remove execution risk, environmental obligations or the fact that hydro output still depends on conditions outside management’s control.
The Growth Pipeline Is No Longer Just a Slide
Meridian is also pushing beyond its established hydro base.
In May, the company secured consent for the Bunnythorpe Solar Farm, a 120MW solar project planned alongside an already consented battery energy storage system north of Palmerston North. Meridian said the solar farm could produce about 225GWh a year, enough to power around 30,000 average homes. The project still needs a final investment decision, expected in Q4 2027.
The company has framed Bunnythorpe as part of a NZ$3 billion investment through to 2030 in new renewable generation capacity. It also pointed to expected final investment decisions for Mt Munro Wind Farm in late 2026 and Te Rere Hau Wind Farm in early 2027.
That creates a cleaner long-term case: more renewable generation, more storage, and a stronger position in a market that needs firming capacity.
The less comfortable reading is that the payoff is still staggered. Bunnythorpe is consented, not committed. Solar, wind and batteries can strengthen the portfolio, but they also require capital, construction discipline and sensible pricing in a market where the cost of money still matters.
The Result Has to Show More Than Better Weather
Meridian’s first-half result already showed what better conditions can do.
For the six months to 31 December 2025, the company reported operating cash flow of NZ$336 million, compared with NZ$50 million a year earlier. NPAT was NZ$227 million, versus a NZ$121 million loss in the prior corresponding half. EBITDAF rose to NZ$506 million from NZ$257 million. Meridian said the result was driven by record wind generation and the second-best lake inflows on record.
That is a strong rebound. It is also why the next result matters.
Meridian has confirmed it will release annual results for the year ended 30 June 2026 on 26 August 2026. By then, investors will have a clearer view of whether the strong hydro position and retail momentum carried through the second half.
The supportive reading is straightforward. Meridian has stronger water storage, a clearer Waitaki operating base, rising retail volumes and a visible development pipeline.
The sceptical reading is just as important. A good hydro year can flatter earnings. Lower wholesale prices can help consumers but squeeze parts of the generation equation. Large renewable projects take time before they add cash flow. The company still has to prove that FY26 is more than a weather-assisted rebound.
For now, Meridian’s story is not about whether renewable energy is attractive in theory. It is about whether one of New Zealand’s most important electricity assets can turn a favourable operating setup into earnings that still look solid when the weather stops helping.
