Rio Tinto’s third-quarter production update put its growth assets in the spotlight, with Oyu Tolgoi copper up 29% year to date and Simandou reaching a 10 Mtpa annualised run-rate. The miner maintained its 2026 production and unit-cost guidance while reporting more than US$2 billion of capital release arrangements.
- Oyu Tolgoi copper production up 29% year to date
- Simandou reaches approximately 10 Mtpa annualised production run-rate
- Global iron ore sales rise 3% year to date
- More than US$2 billion of capital release arrangements announced
- Lithium production up 33% year to date, with guidance at the lower end
Oyu Tolgoi and Simandou drive the quarter
Rio Tinto Limited (ASX:RIO) is ending the third quarter with its two most important growth projects moving in the right direction. Copper production at Oyu Tolgoi rose 27% year on year in the quarter and 29% across the first nine months, while Simandou reached an annualised production run-rate of approximately 10 million tonnes on a 100% basis as its Guinean iron ore operation ramps up.
The headline group numbers were steadier than spectacular: consolidated copper production was flat year on year at 205,000 tonnes in the quarter and rose 1% to 646,000 tonnes year to date. Global iron ore sales increased 3% year on year to 90.8 million tonnes in the quarter, with Pilbara sales up 2%, and total iron ore sales reached 255.3 million tonnes for the first nine months.
Guidance holds despite cost pressure
Rio Tinto maintained its 2026 production, sales and unit-cost guidance. That leaves copper production at 800,000 to 870,000 tonnes, global iron ore sales at 343 million to 366 million tonnes and lithium carbonate equivalent production at 61,000 to 64,000 tonnes, although the lithium range is now expected to be delivered at the lower end.
The company said higher diesel prices and a stronger Australian dollar are pushing up Pilbara unit costs. Diesel added US$0.9 per wet metric tonne to year-to-date costs against 2025, with the full-year impact expected to reach US$1.1 per tonne if the current spot assumption holds. Rio Tinto also estimated an approximately US$1.0 per tonne cost impact from foreign exchange relative to its guidance assumption.
Oyu Tolgoi’s quarter benefited from the underground ramp-up, higher grades and improved recoveries, while Kennecott’s copper output was constrained by a flash converting furnace breach that was repaired in about 70 days by the end of August. The recovery at Oyu Tolgoi continues the trajectory described in the Oyu Tolgoi copper ramp-up, which had reported 31% growth in the first half and a maintained 2028 production target.
Capital release adds portfolio discipline
Rio Tinto said it has entered arrangements to release more than US$2 billion of capital year to date, including the proposed sale of the Dampier Seawater Desalination Plant, land in Kitimat, British Columbia, and a non-binding lithium sales arrangement with a pre-payment component. The company said these arrangements form part of its broader US$5 billion to US$10 billion capital release program.
The qualification matters: completion and cash receipt remain subject to binding agreements and conditions precedent. Management is targeting around US$5 billion of capital release initiatives by the end of 2026, while the earlier productivity benefit target of a US$1.8 billion annualised run-rate by year-end remains in place.
Major projects remain on schedule
Simandou’s mine was approximately 84% complete and its port and marine infrastructure 92% complete at the end of September. First ore through one of the primary crushers and first ore through the SimFer port are expected in the fourth quarter, supporting a planned ramp-up towards full production rates in the second half of 2028. Rio Tinto reported 2.2 million tonnes shipped to China in the quarter, but recognised sales of 1.3 million tonnes, reflecting the long mine-to-customer cycle.
Elsewhere, Brockman, Hope Downs 2 and West Angelas remain on track for first production in 2027, while the US$2.5 billion Rincon lithium expansion remains scheduled for first production in 2028. Lithium production rose 33% year to date, but planned maintenance, severe weather and slower-than-anticipated equipment uptime at Sal de Vida show that the newer growth portfolio is not yet operating uniformly.
The next test is execution through year-end
The third-quarter release gives Rio Tinto a favourable operating scorecard without removing the usual mining-sector dependencies. Commodity prices remain exposed to Chinese demand, freight and geopolitical disruption, while Simandou still has commissioning work ahead and capital release arrangements still need to convert into completed transactions and cash.
For the fourth quarter, the practical tests are clear: whether Oyu Tolgoi can sustain its elevated run-rate, whether Simandou’s infrastructure milestones translate into higher recognised sales, and whether diesel and currency effects can be absorbed without breaking maintained cost guidance.
Bottom Line?
Rio Tinto has preserved its 2026 targets, but the quality of the result will increasingly depend on converting project ramp-ups and announced asset releases into cash and repeatable output.
Questions in the middle?
- Can Oyu Tolgoi sustain its stronger underground performance as open-pit grades and gold grades soften?
- Will Simandou’s commissioning milestones produce a meaningful increase in recognised sales during the fourth quarter?
- How much of the announced US$2 billion-plus capital release will be completed and received before year-end?