Whitehaven Coal Q3 Production Falls 14% as Prices and Cost Savings Rise

Seasonal Wet Weather Hits Queensland Production

Whitehaven Coal (ASX:WHC) saw its managed run-of-mine (ROM) coal production dip 14% to 9.5 million tonnes in the March quarter, primarily due to the Queensland wet season disrupting operations. Queensland’s managed ROM output plunged 28% quarter-on-quarter to 4.1 million tonnes, with Blackwater mine down 35% as water management and mining conditions deteriorated. By contrast, New South Wales operations held steady with 5.4 million tonnes, supported by strong open cut performance despite a 44% fall in Narrabri’s longwall production due to geotechnical challenges.

Despite the production softness, equity coal sales remained broadly flat at 6.8 million tonnes, split fairly evenly between Queensland (3.2Mt) and New South Wales (3.6Mt). Queensland sales even improved 8% on the prior quarter as stock drawdowns ahead of the wet season supported shipment schedules.

Coal Prices Climb Amid Tight Supply and Geopolitical Tensions

Metallurgical coal prices surged with the Platts PLV Hard Coking Coal (HCC) index rising 18% quarter-on-quarter to an average of US$235 per tonne. Queensland operations realised an average metallurgical coal price of US$170/t, approximately 72% of the PLV HCC index, reflecting typical lag effects in pricing mechanisms. Meanwhile, New South Wales thermal coal prices also firmed, with the gC NEWC index up 11% to US$120/t and realised prices matching 101% of the index.

Market tightness was driven by wet-season supply disruptions in Queensland and geopolitical upheaval in the Middle East, which tightened LNG supply and spurred potential gas-to-coal switching, benefiting Whitehaven’s NSW thermal portfolio. The company highlighted longer-term structural supply shortfalls in both metallurgical and high CV thermal coal markets, underpinned by declining Australian HCC production and growing Indian demand.

Refinancing Delivers Significant Interest Savings

Whitehaven’s balance sheet showed improvement with net debt falling to approximately A$0.6 billion at 31 March 2026, down from A$0.7 billion at the end of December, before the second US$500 million deferred acquisition payment to BMA was made in early April. The company completed a major refinancing in April, issuing US$900 million in senior secured notes alongside a US$600 million syndicated bank facility, reducing its average cost of debt to around 6.3% and extending average tenor to six years. This restructuring is expected to save between A$50 million and A$55 million in annual interest costs starting May 2026, a substantial boost to financial flexibility and earnings quality. This follows earlier announcements of the refinancing structure and credit rating upgrades that supported the debt issuance US$900 million notes pricing and US$600 million syndicated facility.

Cost Savings and Capital Discipline Remain Priorities

Operational cost management remains a core focus, with Whitehaven on track to deliver targeted annualised cost savings of A$60 million to A$80 million by the end of June 2026. Unit costs for the March quarter were below the first half FY26 average of A$135 per tonne but are expected to rise in Q4 due to increasing diesel prices, which have a material impact on mining costs. Diesel accounts for roughly 8% of unit costs, with an additional 2% linked via NSW rail contracts, meaning a A$1/litre increase in diesel could add approximately A$10-11 per tonne to costs annually.

Capital expenditure remains disciplined, with A$4 million spent on development projects including Winchester South and Vickery, and exploration activities continuing to support mine planning and infrastructure. Winchester South has secured Queensland environmental approvals but faces ongoing legal challenges, while Vickery’s extension project awaits final investment decision. The company emphasises strict capital allocation, balancing growth opportunities with market conditions.

Share Buy-Back and Acquisition Payments Progress

Whitehaven continued its share buy-back program, repurchasing 1.4 million shares for A$11 million during the quarter and 7.7 million shares year-to-date for A$56 million, reflecting ongoing capital return discipline. Meanwhile, acquisition payments to BMA for Daunia and Blackwater mines are advancing, with the second US$500 million deferred payment completed in April. A contingent payment of approximately US$58 million is due in July 2026, based on realised coal prices exceeding thresholds, with final acquisition payments scheduled for 2027.

FY26 guidance remains unchanged, with production and sales expected firmly in the upper half of the provided ranges and unit costs tracking near the midpoint. Investors will be watching how Whitehaven navigates cost pressures from diesel and the evolving coal price environment, as well as the timing of development project decisions and ongoing regulatory processes around Winchester South.