Inside BHP's Copper Transition

BHP's capital allocation framework has changed visibly across the last three annual reports. Through 2022, the framework weighted iron ore expansion, coal divestiture, and base metals maintenance. By 2024, copper had become the primary growth lever with explicit capital allocated to organic expansion at Escondida and Spence, inorganic expansion via the OZ Minerals acquisition, and development capex on Oak Dam.

The 2025 capital budget allocates roughly 45 percent of growth capex to copper projects, up from 25 percent in 2022. The iron ore growth capex has declined to maintenance levels, consistent with the view that Pilbara expansion economics are marginal at current price assumptions. The coal exposure was further reduced via the BMA joint venture exits.

This shift produces a different through-cycle earnings profile. The iron ore business remains the largest cash contributor but grows at essentially zero. The copper business grows at 6-8 percent per year on the current development pipeline. Potash remains pre-revenue until 2027 and will contribute modestly even then. The blended portfolio growth rate is 3-4 percent volume growth plus commodity price exposure.

The Research Desk's framing: this is a diversified major that has started to transition toward copper but the transition is only half complete. That half-complete status is reflected in the current multiple of 15x forward, which sits between pure-play copper multiples (18x Freeport) and pure-play iron ore multiples (8x Fortescue).

Secondary observations from the data: the segment disclosure patterns, the working capital dynamics, and the stock-based compensation profile all tell a consistent story with the headline numbers. When these three secondary measures align with the primary thesis, the base case is given higher conviction. That alignment is present in the current view.

Escondida is the world's largest copper mine by production. BHP operates it with Rio Tinto as the non-operating partner and the full cost and revenue flow through the BHP P&L based on its economic interest. The mine produces roughly 1.1 million tonnes of copper annually, which represents about 4.5 percent of global mine supply.

The optimisation project currently underway involves roughly $8 billion of capital across the 2024-2028 window. The objectives are to extend mine life by a decade, improve the grade profile by moving deeper into the ore body, and install new concentrator capacity that enables higher throughput. The IRR math on the project assumes $4.00 per pound copper and produces a 15 percent post-tax return. At $5.00 copper, the IRR approaches 22 percent.

The Research Desk's view is that Escondida optimisation is the highest-return copper investment available to BHP. The alternative capital uses (buybacks at current share price, further diversification acquisitions, incremental iron ore capex) all produce lower through-cycle IRRs. The deployment of capital into Escondida is therefore consistent with disciplined allocation.

Oak Dam, the South Australian development project, is a separate story. It represents the largest greenfield copper development BHP has undertaken in decades. First production is guided for 2028-2029 with an initial production rate of roughly 200,000 tonnes annually. The project economics are good but the execution risk is higher than brownfield expansions because the Olympic Dam-style architecture is capital-intensive and the processing flow sheet for this ore body is not fully standardised.

A final frame. Research Desk notes on this name have tracked a consistent thesis across four consecutive quarters. The current update refines rather than reverses that thesis. Readers following the series should note the incremental change in conviction rather than a shift in direction.

Even as the strategic narrative focuses on copper, iron ore remains the cash generator that funds the transition. The Pilbara business produces approximately 290 million tonnes per year at unit costs that are among the lowest in the global cost curve. At $95 per tonne benchmark iron ore prices, the segment generates roughly $18-20 billion of EBITDA annually.

That EBITDA funds the capex program, the dividend (currently yielding 1.7 percent on a policy of 50 percent payout of earnings minimum), and the progress of the copper development pipeline. If iron ore prices stabilise at current levels, the funding is adequate. If they compress below $80, the capex program becomes more challenging and management would likely defer either Oak Dam or Jansen phase two. If they compress below $65, the dividend payout ratio comes under question.

The Research Desk's model assumes iron ore averages $90 per tonne through 2028, with a bear case at $75 and a bull case at $105. The transition narrative holds comfortably in the base and bull cases. It becomes vulnerable in the bear case.

Historically, iron ore prices have been more stable than the bearish consensus often assumes. Chinese steel production has been remarkably resilient even as property construction has slowed, because infrastructure demand has partially offset the property weakness. That durability is the underpinning of the Pilbara cash flow and the structural case for continuing to run the assets rather than divest them.

A note on framework. The Research Desk builds its base case around a five year earnings trajectory that reconciles top-down industry forecasts with bottom-up company guidance. When those two inputs diverge materially, we anchor the base case to the more conservative. That discipline is the source of the occasional gap between our published target and consensus.

BHP trades at $204.7 billion market cap and 15.1x forward earnings. The trailing sales multiple of 3.8x is well above the iron ore pure-play Fortescue but below pure-play copper majors. That relative valuation is consistent with a diversified major transitioning toward a higher copper weighting.

On a sum of the parts, the iron ore segment at 8x EBITDA times $18 billion of segment EBITDA equals $144 billion. The copper segment at 11x EBITDA times $8 billion equals $88 billion. The coal and potash segments together contribute another $20 billion of implied enterprise value. The net debt position subtracts roughly $10 billion. The SOTP fair value for the equity lands at $242 billion.

That is a 18 percent upside from the current $204.7 billion market cap. The gap is what the Research Desk attributes to incomplete crediting of the copper transition. As Escondida optimisation delivers the first production gain in 2026-2027, and as Oak Dam approaches first production in 2028, the SOTP multiple on the copper segment should expand toward 13-14x, which would move fair value to $265-275 billion.

Secondary observations from the data: the segment disclosure patterns, the working capital dynamics, and the stock-based compensation profile all tell a consistent story with the headline numbers. When these three secondary measures align with the primary thesis, the base case is given higher conviction. That alignment is present in the current view.

The market often compares BHP to Fortescue because both are large iron ore producers. The Research Desk thinks the more useful comparison is Rio Tinto. Both are diversified majors with aluminium, copper, and iron ore exposures. Both have executed similar capital allocation shifts toward copper over the past five years. Both face similar commodity cycle dynamics.

Rio trades at 12.2x forward earnings versus BHP at 15.1x. On an EV/EBITDA basis the gap narrows. The premium BHP carries over Rio reflects three specific advantages: slightly better operating cost positioning in the Pilbara, the Oak Dam optionality that Rio does not have a direct parallel for, and historically more conservative capital allocation.

Against Fortescue, BHP trades at a larger premium (15.1x vs roughly 7x forward). That premium is entirely a diversification premium and reflects the copper weighting plus the potash optionality. Investors looking for pure iron ore exposure would own Fortescue. Investors looking for diversified exposure with a copper tilt would own BHP. The Research Desk's view is that the diversified exposure is worth the premium at current commodity prices.

A final frame. Research Desk notes on this name have tracked a consistent thesis across four consecutive quarters. The current update refines rather than reverses that thesis. Readers following the series should note the incremental change in conviction rather than a shift in direction.

Jansen, the Canadian potash project, is in the final stages of phase one development. First production is guided for 2026. The initial phase will produce approximately 4.35 million tonnes per year. Phase two, if sanctioned, would bring total capacity to roughly 8.5 million tonnes per year by 2029.

Potash as a commodity is less cyclical than iron ore or copper. Demand is driven by agricultural fertiliser use and has compounded at 2-3 percent annually for the past two decades. Prices have been volatile but less so than base metals. The margin profile is attractive with Canadian potash costs positioned in the lower half of the global cost curve.

The Research Desk's view is that potash adds roughly $15-20 billion of fair value once production ramps. That is not a game-changer for the total valuation but it is a meaningful optionality that diversifies the portfolio further from iron ore dependence. Phase two sanction, if and when it occurs, would add another $8-12 billion of optionality value.

A note on framework. The Research Desk builds its base case around a five year earnings trajectory that reconciles top-down industry forecasts with bottom-up company guidance. When those two inputs diverge materially, we anchor the base case to the more conservative. That discipline is the source of the occasional gap between our published target and consensus.