Key Highlights

  • BHP (ASX:BHP)’s Queensland metallurgical coal operations are set to match all of their forecast electricity Demand with renewable power from 2027, a genuine milestone.
  • BHP Group (ASX:BHP), through the BHP Mitsubishi Alliance (BMA), is set to become the first of BHP’s Australian operations to run under renewable power
  • The electricity will come from a diversified mix of renewable sources, including wind, solar and pumped hydro storage, drawn from projects such as the
  • For BMA, matching all forecast electricity demand with renewables is a substantial step toward cutting operational emissions.

BHP (ASX:BHP)’s Queensland metallurgical coal operations are set to match all of their forecast electricity demand with renewable power from 2027, a genuine milestone. But it also exposes a paradox at the heart of Mining decarbonisation: cleaning up how you dig coal does nothing to change the emissions from burning it.

The Milestone

BHP Group (ASX:BHP), through the BHP Mitsubishi Alliance (BMA), is set to become the first of BHP’s Australian operations to run under renewable power arrangements for 100 per cent of its forecast electricity needs. BMA entered a seven-year power purchase agreement, commencing from FY2027, with Queensland’s publicly owned generator and retailer CleanCo, its third such agreement. Combined with an earlier renewable PPA signed in 2023, the new deal is expected to allow BMA’s Queensland Assets to have 100 per cent of their forecast operational electricity demand supplied by renewable PPAs from 2027.

The electricity will come from a diversified mix of renewable sources, including wind, solar and pumped hydro storage, drawn from projects such as the MacIntyre and Kaban wind farms and the Western Downs Green Power Hub. BHP has said the underpinning projects supported more than 1,500 construction jobs across regional Queensland.

Why It Matters

For BMA, matching all forecast electricity demand with renewables is a substantial step toward cutting operational emissions. BHP has committed to reducing its operational emissions by at least 30 per cent by FY2030, and BHP Australia President Geraldine Slattery framed the move to 100 per cent renewables at BMA as a significant contribution to that goal. Electricity is one of the larger controllable sources of a mine’s operational emissions, so switching it to renewable sources delivers a real, measurable reduction.

There is a commercial logic too. Locking in long-term renewable power can provide price certainty and insulate operations from the Volatility of fossil-fuel-based electricity, while supporting the broader build-out of Queensland’s renewable infrastructure.

The Crucial Distinction

Here lies the paradox that gives this story its edge. Matching 100 per cent of electricity demand with renewables addresses the emissions from running the mine, the diesel, electricity and other energy BHP uses directly and indirectly to extract and process coal. These are known as Scope 1 and Scope 2 emissions. It does nothing to change the far larger emissions that arise when the metallurgical coal BMA produces is later burned to make steel.

Those Downstream emissions, released by BMA’s customers, are categorised as Scope 3, and they dwarf the operational emissions of the mine itself. So while BMA can accurately claim that its operations are powered by renewable electricity, this does not make the coal it sells low-emission. Keeping this distinction clear is essential to understanding what the milestone does, and does not, achieve.

The Metallurgical Coal Question

BMA produces metallurgical coal, also called steelmaking or coking coal, which is distinct from thermal coal burned for electricity. Metallurgical coal is currently an essential input to the dominant blast-furnace method of making steel, and there is no fully proven, large-scale, commercial alternative yet. This is why BHP continues to see a role for high-quality metallurgical coal even as it decarbonises its own operations: global steel demand remains robust, and the world still needs the coal to make it.

This creates the tension at the heart of the article’s question. Mining can go a long way toward greening how coal is extracted, but it cannot, by itself, resolve the emissions from using that coal. That challenge falls to steelmakers and to emerging low-emission steel technologies.

The Broader Decarbonisation Challenge

BHP is pursuing lower-emission steelmaking through research and trials, including work with steel producers on technologies that could reduce the carbon intensity of steel over time. But these are long-term efforts, and the transition to genuinely low-emission steel at scale is expected to take decades. In the meantime, the renewable-electricity milestone at BMA is best understood as an important but partial step: real progress on operational emissions, set against a much larger, unresolved Scope 3 challenge.

Opportunities and Risks

The opportunity is demonstrable progress on operational emissions, cost certainty on power, and reputational benefit from leading on renewables. The risks and limitations include the unchanged Scope 3 profile of the coal itself, the long timeline for low-emission steelmaking, and the possibility that investors or regulators focused on total emissions view operational milestones as insufficient. The achievement is real, but its scope is narrow.

How the PPA Works in Practice

It is worth understanding what a power purchase agreement actually does. Under the arrangement with CleanCo, BMA contracts to buy renewable electricity generated by specific wind, solar and pumped-hydro projects across Queensland, matching its forecast demand with renewable supply. In practice, electricity flows through the shared grid rather than by dedicated wires from a single wind farm, so the arrangement works on a matching or accounting basis: BMA’s consumption is backed by an equivalent Volume of renewable generation contracted through the PPA. This is a standard and widely accepted mechanism for large industrial users to green their electricity, and it has the added benefit of Underwriting new renewable projects that might not otherwise be built. BHP has noted the underpinning projects supported more than 1,500 construction jobs, illustrating the wider economic spillover of such deals for regional communities.

What Investors Should Watch Next

Investors may be watching the FY2027 commencement of the 100 per cent renewable arrangements, BHP’s progress toward its FY2030 operational emissions target, and developments in low-emission steelmaking that could eventually address Scope 3 emissions. A key variable will be how demand for metallurgical coal evolves as steelmakers pursue decarbonisation, since that ultimately shapes the long-term value of BMA.

Key Takeaway

BMA matching 100 per cent of its forecast electricity demand with renewables from 2027 is a genuine milestone that cuts operational emissions and supports BHP’s FY2030 target. But it addresses only Scope 1 and Scope 2 emissions from running the mine, not the far larger Scope 3 emissions from burning metallurgical coal to make steel. For shareholders, the issue to monitor is the long-term demand outlook for steelmaking coal as low-emission steel technologies develop, because that, not operational greening, will determine the enduring value of ASX:BHP’s coal business.