Freeport-McMoRan is recasting its growth model around low-capex leach technologies that turn legacy stockpiles into scalable copper capacity, reshaping how supply, cost, and risk are managed across its network.
In Brief
- Leach technology is being treated as a virtual new mine, adding hundreds of millions of pounds of copper at marginal cost without full mine builds.
- U.S. operations are becoming the test bed for process innovation and automation, linking throughput gains directly to structural cost reduction.
- Brownfield-first investment and staged restarts at Grasberg are embedding capital discipline and risk gating into the way new capacity is brought on line.
Leach as The New Mine: The Strategic Break
The structural shift at Freeport-McMoRan is not a single project but a change in how capacity is created. Instead of relying on decade-long greenfield builds, the company is treating leach technology on existing stockpiles as a new capacity platform in its own right.
In 2025, Freeport produced more than 200 million pounds of copper from its leach initiative. The company is targeting 300 million pounds in 2026, 400 million pounds in 2027, and 800 million pounds by 2030. Those volumes are equivalent to a medium-sized mine, yet they come from previously mined material sitting in stockpiles.
Management is explicit about the operating logic. These are low incremental cost pounds that do not require significant capital. Compared with blasting and hauling fresh ore, building new concentrators, and paying third-party smelter charges, the leach programme uses existing material and infrastructure, plus process enhancements such as proprietary chemical additives and heated solutions to unlock additional metal.
This is the strategic break. Capacity growth is no longer bound to the traditional mine-development cycle. It is tied instead to how fast leach chemistry and stockpile engineering can be proven and scaled across the network.
How Low-capex Leach Turns Stockpiles Into Capacity
In operational terms, the leach shift hinges on three elements:
- systematic characterisation of stockpiles at sites such as Morenci, El Abra, and Chino
- deployment of proprietary additives and process controls to increase recovery
- reconfiguration of pad, pumping, and heat infrastructure to handle higher and more controlled solution flows
At Morenci, Freeport has begun field deployment of an internally developed additive and plans broader adoption through 2026. In parallel, it is piloting heated leach solutions, injecting heat into stockpiles so reaction rates and recoveries improve. At El Abra, the company is extending leach pads and planning heated stockpile injection tests in 2026. At Chino in New Mexico, a new stockpile has been started using engineered chemical heat, with leaders suggesting this could change how future stockpiles are designed.
Network-level, this requires a different planning cadence to a mill-concentrator complex. Rather than treating stockpiles as static buffers, planners need active recovery curves, temperature profiles, and additive performance data in the production plan. Master data on ore origin, mineralogy, and historical processing path becomes central to forecasting leach output. Allocation decisions shift from simply deciding which ore to send to the mill to deciding which stockpile to leach, at what temperature, and with which additive regime to meet forward sales and cost targets.
The leach programme also changes maintenance and capital staging. Pumping systems, heat exchangers, and solution distribution infrastructure become primary bottlenecks, with relatively short lead times compared to mill expansions. Capacity can be added in modular increments, enabling Freeport to pace spend to price signals and site-level performance rather than committing to a single large step-change.
Autonomous Haulage and U.S. Leverage
The leach platform does not sit in isolation. It is part of a broader effort to turn U.S. operations into a higher-volume, lower-cost engine within the portfolio.
In 2025, U.S. copper production rose 5 percent year-on-year and 5 percent versus the prior-year quarter. Operating income from the U.S. business in the fourth quarter was 3.5 times the level of a year earlier, a clear sign of fixed-cost leverage. The company is targeting an 8 percent increase in U.S. volumes in 2026, with leach initiatives a significant contributor.
Freeport has converted the haul truck fleet at its Bagdad mine in Arizona to autonomous operation. This is not framed as a technology showcase but as a response to labour constraints and as preparation for Bagdad 2X, a potential doubling of mine output. Autonomy is intended to reduce downtime, standardise cycle times, and free up scarce skilled operators for other roles.
Execution remains work in progress. Leaders acknowledge the autonomous fleet is not yet delivering the full expected performance and that optimisation is ongoing. That is a reminder that autonomy is an organisational and process change as much as a technology deployment. Dispatch rules, maintenance intervals, and pit sequencing all need to be reworked to reflect machine capabilities and constraints.
The company has set a 2027 target of reducing U.S. net cash costs to 2.50 dollars per pound, from guidance levels around 3.00 dollars. This target is explicitly tied to growing throughput via leach and efficiency rather than headcount cuts. At network level, the plan is to increase volumes using essentially the same operating structure, allowing unit costs to fall as fixed costs are spread over more pounds.
Brownfield-first Capacity
Freeport is coupling low-capex leach with a brownfield-heavy project pipeline. In Arizona, the Bagdad expansion is advancing towards an investment decision. A 2023 study suggested capex of roughly 3.5 billion dollars. During the first half of 2026, the team is advancing engineering, securing fixed pricing from vendors for major components, and investing around 150 million dollars in early works, including power infrastructure.
In Chile, more than 17 billion pounds of copper reserves were added at El Abra in 2025. An environmental impact statement for a major expansion is due to be filed in the first half of 2026. Here too, the company is using leach pad extensions and heated injection pilots as stepping stones toward higher-capacity operations.
In Indonesia, the Kucing Liar underground project is being scaled from 90,000 to 130,000 tons per day. Combined with a phased restart of the Grasberg block cave after a mud rush incident, this underpins a plan to reach a quarterly run rate of roughly 1 billion pounds of copper in the second half of 2026 and to grow volumes through 2027 and 2028.
Across these projects, the common pattern is brownfield development: leveraging existing shafts, tailings facilities, power systems, and workforces. This reduces lead times and capital per pound compared with new greenfield mines, consistent with the companys emphasis on capital discipline and risk control.
Risk Gating After Grasberg: Infrastructure As Control Point
The Grasberg incident, which cut 2025 copper volumes by about 10 percent versus plan, has forced a redesign of risk management in one of the worlds most complex underground operations.
The restart sequence is staged across production blocks, with clear infrastructure milestones. For Blocks 2 and 3, these include removal of mud from tunnels, installation of cement plugs to isolate high-risk panels, and replacement of damaged electrical and communication systems. As of early 2026, mud removal was at 97 percent of target and major barrier pours had just been completed, putting start-up in the first half of the second quarter.
The company is also adopting new drainage solutions at the pit bottom and emerging imaging technologies to improve cave shape monitoring. Investigations into the incident have led to a focus on more dynamic case management plans and more robust operational procedures for areas exposed to external mud rush risk.
Operationally, this means mine plans and production schedules are now contingent on risk gates as well as tonnage and grade. Restart volumes ramp only when defined infrastructure and monitoring steps are complete. For supply chain leaders in other sectors, the parallel is moving from calendar-based commissioning to conditional commissioning, where assets only progress once specific resilience criteria are met.
Domestic Integration and Power-hungry Demand
Freeport supplies around 70 percent of refined copper produced in the United States from an integrated chain of mines, leach facilities, smelters, and refineries. That integration matters in a market where electrification and AI infrastructure are pulling demand upstream.
The company notes that in the U.S., data center demand now represents the most significant source of growth for power cable and building wire. That is offsetting weakness in residential construction and autos. This demand shift links Freeports investment decisions directly to the same grid and data center constraints that firms such as Schneider Electric and Tesla are navigating from a downstream perspective.
As a result, U.S. copper capacity is not just a margin lever. It is a system resource for the domestic grid and AI build-out. Freeport projects that its U.S. production could grow by more than 50 percent over the next four to five years if leach scaling and Bagdad 2X proceed, taking total U.S. output toward 2 billion pounds annually. The company is explicit that the economics for Bagdad must stand on their own at roughly 4 dollars copper and are not predicated on tariff protection.
Capital, Cost, and Execution Tension
This low-capex growth model does not remove trade-offs. Freeport still expects capital expenditure of 4.3 to 4.5 billion dollars per year in 2026 and 2027, up from 3.9 billion in 2025. Roughly half of discretionary capex over that period is tied to Kucing Liar and an LNG project in Indonesia; the remainder supports Bagdad infrastructure, tailings, and a recycling project at Atlantic Copper in Spain.
South American operations, which provide 1.1 billion pounds of copper per year, face labour and energy cost inflation, with net cash costs rising to around 2.58 dollars per pound. Indonesian smelter treatment charges per pound are temporarily elevated as new capacity ramps and will only normalise once utilisation increases. Autonomous haulage at Bagdad still sits on a learning curve. Leach pilots must demonstrate sustained recovery gains at scale before the higher-end volume targets can be relied on in base plans.
These tensions show up most clearly in cost guidance and price sensitivity. Company-wide unit net cash costs are guided at 1.75 dollars per pound in 2026, with the second half run-rate closer to 1.25 dollars as volumes recover at Grasberg and leach contributes more. Each 10 cent move in copper price shifts annual EBITDA in 2027–2028 by about 415 million dollars, amplifying the financial impact of any execution slippage on low-cost volume projects.
What Freeports Model Now Enables
Freeport-McMoRans operating model is evolving towards a portfolio where a material share of new copper units comes from process innovation on existing assets rather than from new mines. Leach stockpiles, autonomous haulage, and brownfield expansions are being integrated into a single capacity plan, with risk gates and vendor contracts used to pace capital and protect against shocks.
This model enables faster, lower-capex responses to structural demand growth from electrification and AI infrastructure, and gives the company more options to manage ore-grade decline and labour scarcity. It also concentrates execution risk in process engineering, underground infrastructure, and integrated U.S. operations, making operational discipline and network-level planning central to how Freeport will deliver on its growth narrative over the rest of the decade.
