Mercury’s fourth quarter results demonstrate significant operational momentum, with trading margin reaching $390 million, up 33 percent compared to the prior year period. This represents a $97 million improvement and reflects strong renewable portfolio management combined with disciplined trading execution. For investors, this performance validates Mercury’s strategy of balancing immediate cash generation with long-term renewable asset development.
The quarterly results are underpinned by substantial progress across Mercury’s major renewable projects. At Kaiwera Downs Stage 2 Wind Farm, all turbines have been installed and are undergoing reliability testing, with handover expected by end of August. Meanwhile, Kaiwaikawe Wind Farm is tracking to schedule for full operations in the first half of fiscal 2027, with first generation from six installed turbines beginning in July. These milestones demonstrate Mercury’s WindPlatform capability to deliver projects on time and on budget, a critical factor for investor confidence as the company scales renewable capacity.
Generation volume totaled 2,344 GWh for the quarter, up 339 GWh year-on-year. Full-year generation reached 9,070 GWh, representing an increase of 1,163 GWh on the prior year. This growth reflects both operational improvements and the contribution from newly commissioned assets. The company’s year-to-date trading margin of $1,421 million, up $269 million from the prior year, shows how effectively Mercury is converting renewable generation into profitability.
Beyond wind, Mercury is expanding its development pipeline and market presence. Fast-track consent has been granted for Puke Kapo Hau Wind Farm, signaling regulatory support for Mercury’s renewable ambitions. The company’s May Geothermal Investor Day highlighted the scale of its geothermal platform, with over 1 TWh entering feasibility stage and $75 million committed to appraisal drilling at the Ngā Tamariki and Rotokawa geothermal fields. These investments position Mercury to diversify beyond wind and hydro, though geothermal projects will require patience from investors given their multi-year development horizons.
On the retail front, Mercury has launched Flex Rates, a new time-of-use electricity offering for eligible customers. This product diversification reflects broader market trends toward demand management and customer engagement, though the immediate financial impact from this launch is not detailed in the quarterly update.
Investors should monitor several developments over coming quarters. The successful handover and commercial performance of recently completed wind farms will validate Mercury’s project execution capability. Progress of geothermal appraisal work and any updates on Puke Kapo Hau consent implementation will signal the company’s medium-term growth runway. Additionally, tracking customer uptake of Flex Rates and its impact on retail margins will indicate whether Mercury’s portfolio diversification is creating sustainable competitive advantages. This announcement is price sensitive and has been flagged as material by the ASX.
View the full ASX announcement (PDF)
About Mercury NZ Limited (ASX: MCY)
Mercury NZ Limited generates approximately 16% of New Zealand’s total electricity from renewable sources including hydro, geothermal, and wind power. The company operates as a generator and retailer of electricity, gas, broadband and mobile services to residential and business customers in New Zealand. It operates through three main business segments: Generation/Wholesale, Customer, and Other divisions.
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