Fortescue Fast-Tracks World-First Green Energy Grid to Eliminate Fossil Fuels in Mining
Australian mining giant Fortescue Ltd is accelerating plans to deploy what it describes as the world’s first fully integrated, large-scale green energy grid designed to power heavy industry without fossil fuels, marking a significant shift in how resource extraction operations are powered.
The company said it is bringing forward development of its “green grid” across its Pilbara operations in Western Australia, with the goal of eliminating diesel use and transitioning entirely to renewable energy. Unlike traditional renewable hubs that feed into national grids, Fortescue’s system will operate off-grid, supplying continuous, round-the-clock power directly to industrial operations at a scale comparable to a small city.
By early next year, Fortescue expects to have installed 290 megawatts of renewable capacity, enough to support daytime “green processing” at its iron ore facilities. Later in the year, it aims to run operations entirely without fossil fuels for extended 24-hour periods. Full completion of the system is targeted for 2028, ahead of earlier timelines, aligning with the company’s broader “Real Zero” emissions strategy.
Once complete, the Pilbara green grid is expected to include 1.2 gigawatts of solar generation, more than 600 megawatts of wind power and between 4 and 5 gigawatt-hours of battery storage. The system will also incorporate advanced battery infrastructure and proprietary AI-driven optimisation technologies to manage supply and demand across mining, logistics and accommodation facilities supporting around 10,000 workers.
Fortescue says the project is already underway within its existing decarbonisation budget and will ultimately support the electrification of its entire mining ecosystem, including processing plants, rail networks and port infrastructure. The company expects implementation to accelerate over the next two years as construction ramps up.
The economic case is central to the strategy. Fortescue estimates it will save around $100 million in fossil fuel costs as early as next year, with further reductions expected to lower operating costs by between $2 and $4 per tonne of iron ore by the end of the decade. Executives argue this demonstrates that renewable energy is not only environmentally necessary but also commercially advantageous.
In parallel, the company has approved an additional $680 million investment to expand green energy capacity through the Pilbara Green Energy Project. This development will add a further 200 megawatts of renewable generation and is designed to meet growing demand from new industrial customers, including energy-intensive sectors such as data centres.
The project is expected to prove that heavy industry can operate reliably without fossil fuels while maintaining cost control and energy security. It also intends to commercialise the technology globally, offering it under licence or as a service to other large energy users.
The company believes its model could be scaled further, with plans to potentially double generation capacity by an additional two gigawatts in future phases, supported by expanded battery storage. It also indicated that interest has already emerged from governments, corporations and hyperscale data operators exploring alternative energy solutions.
The move comes amid heightened volatility in global energy markets and growing pressure on industry to reduce emissions. By developing an independent, renewable-powered system, Fortescue is positioning itself to mitigate risks associated with fuel price fluctuations and supply disruptions, while aligning with broader decarbonisation trends.
If successful, the project could serve as a blueprint for other resource-intensive industries seeking to transition away from fossil fuels without relying on national grid infrastructure—potentially reshaping how large-scale industrial energy systems are designed and deployed worldwide.