What changed
Revenue grew a modest 2.2% to NZ$3,498m, but that headline masks a significant deterioration in underlying earnings. EBITDAF fell NZ$91m or 10.4% to NZ$786m, reflecting lower generation volumes and higher operating costs that revenue growth could not offset — the release cites supply disruptions pushing spot prices up during peak demand periods, which hit Mercury directly.
The statutory NPAT figure of NZ$1,000m looks extraordinary against FY24's NZ$290m, but this is almost entirely a tax effect rather than an operating achievement: FY25 carried effectively nil tax expense versus a NZ$125m charge in FY24, making NPAT growth of 245% deeply misleading. PBT growth of 141% to NZ$1,000m from NZ$415m is the cleaner read, and even that is substantially non-cash in character — the extraction data does not disaggregate the drivers, but the magnitude of PBT relative to EBITDAF (NZ$1,000m versus NZ$786m) is arithmetically unusual and warrants scrutiny.
Cash generation deteriorated materially. Operating cash flow fell NZ$129m to NZ$483m, while capex surged NZ$189m to NZ$485m — now running at 13.9% of revenue versus 8.6% in FY24. Free cash flow consequently dropped from NZ$470m to NZ$345m. Gross borrowings rose NZ$338m or 17.4% to NZ$2,279m, lifting implied net debt to approximately NZ$2.2b and leverage to roughly 2.8x EBITDAF from 2.2x.
The final ordinary dividend was declared at 14.4 cents per share (up 3%), with the full-year total dividend at 24.0 cents per share versus 23.3 cents in FY24.
What matters
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The EBITDAF decline is the operative result. A 10.4% fall in EBITDAF despite 2.2% revenue growth signals meaningful margin compression. Higher spot price exposure during generation shortfalls translated into cost pressure rather than revenue upside for a predominantly integrated generator-retailer. This is the core earnings-quality issue for the period and the correct anchor for assessing run-rate profitability.
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Leverage is moving in the wrong direction relative to earnings. Net debt rose to approximately NZ$2.2b against a weaker EBITDAF base, pushing the net debt / EBITDAF ratio from 2.2x to 2.8x. With capex at NZ$485m — nearly matching operating cash inflow of NZ$483m — the company is effectively funding its dividend (NZ$345m free cash flow against an unreported but implied dividend obligation) partly from borrowings. The release notes reinvestment in renewable assets, which is strategically coherent, but the leverage trajectory is a watch item if EBITDAF does not recover.
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The HY25-to-FY25 shape confirms a heavily back-weighted, non-operating NPAT recovery. HY25 recorded a NZ$67m NPAT loss; the implied second half delivered NZ$1,067m. That swing cannot reflect operating improvement alone — it almost certainly involves fair value movements on derivatives or similar balance-sheet items, which would be non-cash and non-recurring. This is the single most important unresolved question about earnings quality.
Expectations
No quantitative guidance was disclosed in the extracted release, and no explicit forward targets were provided in the filing material. The assessment must therefore rest on internal consistency and operational context.
The EBITDAF outcome of NZ$786m represents a step down from what management described in FY24 as an elevated earnings environment (FY24 EBITDAF of NZ$877m itself followed FY23's NZ$841m). The current period therefore looks like a partial reversal of that uplift rather than a structural deterioration, though the generation and cost dynamics that drove the decline — hydrology, spot price volatility, and operating cost escalation — are not fully within management's control.
The revenue shape across halves (50/50 split) was broadly as expected for a utility with reasonably stable retail billing. The EBITDAF split (53% first half, 47% second half) is mildly unusual in that the stronger earnings half preceded the weaker one, consistent with the generation pressure cited in the second half. The company's forward commentary references a large volume of renewable development work underway, which provides strategic rationale for the capex ramp but offers no near-term earnings support — those assets are not yet earning.
The 3% dividend increase to 24.0 cents total appears to signal management confidence in cash generation durability, though at NZ$345m free cash flow the dividend headroom depends heavily on what the total dividend payment obligation represents in dollar terms.
Quality of result
The EBITDAF of NZ$786m is the most reliable earnings signal in this result, and it is lower than the prior year. Operating cash flow of NZ$483m at a 61.5% conversion ratio against EBITDAF compares unfavourably with 69.8% in FY24 — cash conversion deteriorated materially, and this is not explained by working capital improvement (trade debtors actually fell NZ$107m, which would normally support cash conversion, making the OCF decline more concerning rather than less).
The NPAT of NZ$1,000m — identical to PBT, implying zero effective tax — and the extreme first-half to second-half NPAT swing (loss of NZ$67m to profit of NZ$1,067m) point strongly to large non-cash items, most likely fair value movements on financial instruments used to hedge power price exposure. These are real under IFRS but carry no cash and reverse over time; they should not be treated as representative of recurring earning capacity.
The capex increase to NZ$485m represents genuine value-building investment in renewable generation, which is durable in asset terms, but it is absorbing virtually all operating cash flow and is balance-sheet-funded at the margin. The dividend increase in this context is a capital allocation choice rather than a product of improved cash generation.
The result is therefore best characterised as: a weaker operating year on a cash and EBITDAF basis, significantly flattered at the NPAT line by non-cash accounting movements, with the balance sheet absorbing the cost of an accelerated build programme.
Unresolved
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The source of the NZ$585m PBT uplift beyond EBITDAF is not explained in the extracted material. EBITDAF fell NZ$91m yet PBT rose NZ$585m — that NZ$676m wedge must reflect non-cash items (most likely fair value gains on derivatives or similar), but their nature, reversibility, and whether they relate to hedges designated under IFRS 9 is not disclosed here.
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Why did operating cash flow fall NZ$129m despite a NZ$107m improvement in trade debtors? Working capital should have been a tailwind; something else — potentially margin calls on derivatives, changes in payables, or contract liabilities — absorbed cash that the debtor release should have provided.
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What is the dividend cover in cash terms? The total dividend obligation in dollar terms is not in the extracted data, so whether free cash flow of NZ$345m actually covers the distribution without incremental borrowing cannot be confirmed.
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Effective tax rate of approximately zero. The mechanism — whether deferred tax reversals, imputation credits utilised, or a specific tax event — is not identified and materially affects any forward earnings per share estimate.
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Generation volume and hydrology outlook. The release references ongoing spot price pressure and peak demand disruption but provides no forward volume guidance; whether FY26 EBITDAF recovers toward NZ$877m or consolidates near NZ$786m is the central operating question.
This briefing cannot assess the fair value and derivative accounting that almost certainly drives the gap between EBITDAF and statutory PBT, as the underlying note disclosures were not included in the extracted material.
Key metrics
| Metric | FY25 | FY24 | Change |
|---|---|---|---|
| Revenue | $3498m | $3424m | +2.2% ↑ |
| Net profit after tax | $1000m | $290m | +244.8% ↑ |
| Net cash inflow from operating activities | $483m | $612m | -21.1% ↓ |
| Declared dividend per share | 14.4c | 14.0c | +2.9% ↑ |
| EBITDAF | $786m | $877m | -10.4% ↓ |
| Profit before tax | $1000m | $415m | +141.0% ↑ |
| Cash and cash equivalents | $86m | $44m | +95.5% ↑ |
| Total assets | $9958m | $9795m | +1.7% ↑ |
Analytical metrics
| Metric | FY25 | FY24 | Context |
|---|---|---|---|
| PBT growth | +141.0% | — | cleaner earnings measure |
| Effective tax rate | 0.0% | -30.1% | — |
| OCF / EBITDAF (cash conversion) | 61.5% | 69.8% | deteriorated |
| FCF pre-lease | $345.0m | $470.0m | −$125.0m |
| FCF / NPAT | 34.5% | 162.1% | complementary conversion metric |
| Capex % revenue | 13.9% | 8.6% | — |
| Capex | $485.0m | $296.0m | +$189.0m |
| Free cash flow | $345.0m | $470.0m | −$125.0m |
| Debtor days | 41.2 | 53.5 | -12.3 days |
| Inventory days | 13.1 | 12.8 | +0.4 days |
| Trade debtors | $395.0m | $502.0m | −$107.0m |
| Net debt | $2193.0m | $1897.0m | +$296.0m |
| Net debt / EBITDAF | 2.80x | 2.20x | Weakening |
| Gross borrowings | $2279.0m | $1941.0m | +$338.0m |
| HY25 share of FY25 revenue | 50.2% | — | Other half was 49.8% |
| HY25 share of FY25 EBITDAF | 53.2% | — | Other half was 46.8% |
| HY25 share of FY25 NPAT | -6.7% | — | Other half was 106.7% |
| Profit from continuing operations | $1000.0m | $290.0m | +$710.0m |
This analysis was generated using Annolyse, an AI-powered tool that extracts and analyses NZX/ASX company announcements. The underlying data is extracted from official company filings and verified against source documents. This is general information only and does not constitute financial advice. The analysis may contain errors. Always read the original company filings and consult a licensed financial adviser before making investment decisions.