BHP copper investment strengthens South Australian smelting hub

BHP

BHP copper investment at the Olympic Dam complex marks a decisive bet on South Australia as a long-term copper hub. The BHP copper investment totals $555mn and targets higher smelter performance and processing capability ahead of a larger expansion decision due in 2028. As a result, the BHP copper investment positions Olympic Dam to offset declining grades in South America and keep overall group copper output within its strategic range.

BHP copper investment prepares Olympic Dam for future expansion

BHP copper investment will fund several debottlenecking projects rather than one single mega-upgrade. The package includes a new oxygen plant that should raise copper concentrate smelting rates to 85 t/hour from 80 t/hour. It also funds an expansion of the underground electric rail network to 6km from 4.85km, supported by six new locomotives. These incremental changes increase throughput and logistics efficiency while keeping optionality ahead of a delayed multi-billion-dollar smelter and refinery expansion decision. Meanwhile, Olympic Dam acts as the processing backbone for Prominent Hill and Carrapateena, which both feed the centralised smelter and refinery. BHP expects combined South Australian copper production of 310,000-340,000t in the 2025-26 financial year, reinforcing the region’s growing share of group copper output.

Australian copper pivots as South American grades decline

BHP copper investment in South Australia comes as its South American assets face medium-term headwinds. The company has already signalled that copper output from Chile and Brazil will decline over time, with Escondida expected to fall to 900,000-1mn t/yr by 2030. Therefore, strengthening Olympic Dam, Prominent Hill and Carrapateena is essential to stabilise portfolio volume and preserve market share. However, BHP still faces structural challenges around high construction and energy costs for domestic smelting. To mitigate this, it has signed two renewable power purchase agreements with Neoen, which should cover around 70pc of its copper-related electricity needs in South Australia by 2030. These contracts help manage operating costs while supporting decarbonisation commitments. BHP produced a record 2mn t of copper in 2024-25, up 8.1pc year on year, and plans to maintain production within a 1.8mn-2mn t range in 2025-26.

The Metalnomist Commentary

BHP copper investment at Olympic Dam underlines how major miners now use incremental debottlenecking to bridge toward larger capex decisions. By lifting smelter performance and securing renewable power, BHP is quietly repositioning South Australia as a core copper processing hub as Escondida and other South American assets mature. For downstream users, this shift supports more diversified copper supply but will also tie long-term availability to Australia’s energy and project-cost trajectory.

BHP renewable power for copper projects accelerates South Australia’s low-carbon shift

BHP

BHP renewable power for copper projects is moving from strategy to execution in South Australia. The new deals with Neoen link Olympic Dam, Carrapateena and Prominent Hill to dedicated wind and battery assets, reshaping their long-term emissions profile. As a result, BHP renewable power for copper projects is becoming central to the group’s decarbonisation roadmap and its compliance with Australia’s safeguard mechanism.

Wind, storage and safeguard compliance for Olympic Dam

BHP will source 100MW of renewable electricity from Neoen’s 300MW Goyder North wind farm and 200MW Goyder battery. This follows an earlier contract for 70MW from Goyder South, which has supplied Olympic Dam since July. Together, these agreements should cover about 70pc of BHP’s copper-related electricity demand in South Australia by 2030.

Olympic Dam falls under Australia’s safeguard mechanism, where on-site generation counts towards covered scope 1 emissions. In 2023-24, Olympic Dam produced 244,321t of CO₂e, staying just below its 246,875t baseline. Therefore, BHP renewable power for copper projects is not just an ESG narrative but a direct tool for avoiding the surrender of additional ACCUs or safeguard credits.

Meanwhile, BHP still surrendered 47,000 ACCUs across 16 other facilities, including iron ore, coal and nickel operations. This highlights how decarbonisation progress remains uneven across the portfolio. However, the South Australian power strategy shows how dedicated renewable contracts can reduce both compliance risk and long-term power-price exposure.

Copper decarbonisation, diesel displacement and long-term risk

BHP is targeting a 30pc cut in operational greenhouse gas emissions by 2029-30 versus 2019-20 levels. The group has already reduced operational emissions to 8.7mn t CO₂e, a 36pc decline from that baseline. In this context, BHP renewable power for copper projects provides a tangible bridge between climate commitments and actual asset-level performance.

The company ultimately aims for net-zero operational emissions by 2050, mainly by displacing diesel in its mining fleets. Progress here has lagged because of technical delays in low-emission vehicle deployment. However, locking in large-scale renewable power for copper operations buys valuable time while mobile-equipment solutions mature.

For customers and policymakers, BHP renewable power for copper projects offers a clearer line of sight to lower-carbon copper supply. This matters as OEMs, grid operators and EV supply chains increasingly differentiate between standard and low-emission copper units. It also strengthens South Australia’s positioning as a hub for renewable-powered mining and processing.

The Metalnomist Commentary

BHP’s structured shift into contracted wind and storage underscores how decarbonisation is becoming a core competitiveness issue for copper miners. For metals buyers, the next phase will involve translating these renewable power deals into quantifiable, auditable carbon advantages at the cathode, rod and cable level.

Australia Backs Lithium-Ion Battery Surge in Western Australia

Canberra, Li battery 

Canberra’s CIS Program Expands Storage by 2.6GWh, Supporting Grid Reliability and Renewable Integration

Federal Government Underwrites Four Major Battery Projects in WA

Australia’s federal government has committed to underwriting four lithium-ion battery projects in Western Australia, adding 2.6GWh of storage capacity by late 2027. The investment comes through the Capacity Investment Scheme (CIS), a national program designed to stabilize revenue for renewable and storage developers over a 15-year period.

Although the government has not disclosed exact revenue floor levels for these projects, the financial backing provides long-term security, encouraging private investment in energy infrastructure.

PGS Energy and Neoen Lead Battery Expansion in WA

The largest of the new CIS-backed batteries is a 1.2GWh system in Marradong, developed by PGS Energy. Co-located with a solar farm, it will connect to the South West Interconnected System (SWIS) — the grid serving WA’s most populated regions.

Neoen, a French renewable energy company, will construct a 615MWh battery outside Perth. The company has already established a strong presence in Australia, operating the Collie Battery Energy Storage System since October 2024. That system alone manages 877MWh and is also connected to SWIS.

Two smaller battery systems, totaling 780MWh, will be built in WA’s rural areas. All four projects represent a regional leap forward in clean energy storage capabilities.

National Battery Strategy Accelerates Toward September Megaround

This announcement follows Canberra’s December 2024 decision to underwrite eight other batteries totaling 3.6GWh in three Australian states, excluding WA. The government plans another major round of funding in September 2025, targeting a cumulative 16GWh. So far, over 100 projects with 135GWh in capacity have applied.

Through the CIS, Australia is accelerating its transition toward a renewable-powered grid. Lithium-ion battery storage plays a pivotal role in managing variable solar and wind inputs while enhancing grid resilience.

Australia Invests $63 Million in Neoen’s Renewable Energy Projects

Neoen

The Australian government has committed A$100 million ($63.2 million) in funding to French renewable energy producer, Neoen, to support the development of three large-scale renewable energy and battery storage projects in Australia. This investment reflects Australia's ongoing push to expand its renewable energy infrastructure and reduce reliance on fossil fuels.

Focus on Battery Storage and Solar Power

The three projects in question include:

1. A 341MW Battery Energy Storage System (BESS) in Western Australia.
2. A 270MW BESS in Queensland.
3. A 440MW peak solar farm in New South Wales.

These projects, which are still under development, aim to enhance Australia's energy security by integrating large-scale storage solutions with renewable energy generation. The Western Australia BESS is particularly significant as it will be an extension of the already operational Collie Battery Energy Storage System, which stores and discharges 219MW of power. Once both parts of the Collie system are fully operational, they will support up to 20% of the state's average energy needs.

Neoen’s New South Wales solar farm, known as the Culcairn Solar Farm, is scheduled to begin generating 800 GWh/year by 2026, covering an area of 1,000 hectares. While a BESS at the site is a possibility, Neoen has yet to make any official announcements regarding that development.

Role of the Clean Energy Finance Corporation (CEFC)

The Clean Energy Finance Corporation (CEFC), a state-owned green investment fund, is providing the funding to Neoen. The CEFC has already been involved in funding a total of 2.3GW worth of battery storage projects across Australia, playing a crucial role in the country's transition to a cleaner, more sustainable energy grid.

Australia’s Renewable Energy Growth

Renewable energy generation has surged across Australia, now accounting for 25% of the country’s total power generation in 2023, up from 17% in 2017. During the same period, the combined share of gas and coal in power generation fell from 81% to 63%. This shift aligns with the government’s broader climate goals, including decarbonizing the energy sector and ensuring energy resilience.

The funding commitment to Neoen comes just a day after the Australian government allocated A$14.1 million to GrainCorp and Ampol to promote the development of sustainable aviation fuels and renewable diesel.