
In a landmark initiative toward aluminium decarbonization, Hydro and Rio Tinto have announced a strategic partnership to explore and develop carbon capture technologies for aluminium smelters. This collaboration represents a major step in the industry’s mission to achieve net-zero emissions, addressing one of the most significant CO2 sources in the aluminium electrolysis process.
A Collaborative Approach to Aluminium Decarbonization
The partnership aims to identify and evaluate commercially viable carbon capture technologies tailored for aluminium smelting. By leveraging their combined expertise, Hydro and Rio Tinto seek to accelerate the development of solutions that can be deployed on an industrial scale.
Under this agreement, both companies will:
- Share data, research findings, and development costs.
- Conduct small-scale laboratory testing with external suppliers.
- Implement large pilot projects at operational sites.
The ultimate objective is to refine carbon capture technologies that can significantly cut emissions in aluminium production while maintaining economic feasibility.
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$45 Million Investment in Aluminium Decarbonization R&D
Hydro and Rio Tinto have pledged $45 million over five years to support research and development. Most of these activities will take place at Hydro’s facilities in Norway and Rio Tinto’s sites across Europe.
Although this partnership is a joint initiative, both companies will continue advancing their independent aluminium decarbonization strategies.
- Hydro’s HalZero technology – A groundbreaking process aimed at eliminating CO2 emissions from aluminium production.
- Rio Tinto’s ELYSIS joint venture – A project focused on developing carbon-free aluminium smelting.
These initiatives highlight their commitment to achieving carbon neutrality while pushing the aluminium industry toward a cleaner future.
The Urgent Need for Aluminium Decarbonization
The aluminium sector is a major contributor to global CO2 emissions, with the electrolysis process accounting for about 75% of direct emissions from smelters. Reducing these emissions is essential for meeting international climate goals.
Challenges in Aluminium Emission Reduction
Despite advancements in:
✅ Renewable energy use
✅ Process efficiency
✅ Circular economy initiatives
…direct carbon emissions from aluminium smelting remain a significant challenge. Hydro and Rio Tinto’s collaboration aims to bridge this gap by developing carbon capture solutions that can be retrofitted to existing infrastructure.
A Shared Vision for Aluminium Decarbonization
Hydro President and CEO Eivind Kallevik emphasized the importance of this partnership:
“Hydro is accelerating our roadmap to achieve net-zero aluminium production by 2050 or sooner, advancing solutions across our value chain from mine to metal. Carbon capture technologies are critical to decarbonizing existing smelters. Our partnership with Rio Tinto will amplify efforts to develop fit-for-purpose solutions that can drive aluminium’s transition to net-zero.”
Rio Tinto’s Chief Executive Jakob Stausholm echoed this sentiment:
“Rio Tinto is committed to reaching net-zero emissions by 2050, and we know that achieving our climate goals requires multiple solutions. By working with Hydro, we are exploring carbon capture technologies for aluminium smelters, leveraging our R&D capabilities to address the climate challenge.”
Overcoming Technical Barriers in Aluminium Decarbonization
Unique Challenges of Carbon Capture in Aluminium Smelting
Unlike industries with high CO2 concentrations, aluminium smelting produces emissions with low CO2 concentrations (~1%), making traditional carbon capture methods less effective.
To address this, Hydro and Rio Tinto will explore:
✅ Direct Air Capture (DAC) – Extracting CO2 from ambient air, which can be adapted for industrial applications.
✅ Point Source Capture – Capturing lower CO2 concentrations directly from smelter emissions.
Advancing Aluminium Decarbonization Technologies
Currently, carbon capture technology for aluminium smelting is in the early stages of development. To transition from research to large-scale deployment, this partnership will:
- Fund pilot projects to test and refine new technologies.
- Evaluate the economic feasibility of implementing carbon capture at smelters.
- Ensure regulatory compliance to align with global climate policies.
A Model for Industry-Wide Aluminium Decarbonization
Hydro and Rio Tinto’s collaboration sets a precedent for the entire aluminium industry, demonstrating that scalable carbon capture solutions are within reach. By pooling resources and expertise, they aim to pave the way for:
✅ Broader adoption of carbon capture technologies.
✅ Reduced industry-wide emissions.
✅ Alignment with evolving environmental regulations.
As governments tighten climate policies and consumers demand low-carbon aluminium, the industry must innovate to stay competitive. The development of cost-effective carbon capture could be a game-changer, allowing smelters to:
- Meet stringent emissions targets.
- Maintain operational efficiency.
- Secure sustainable growth in a decarbonized economy.
What’s Next for Aluminium Decarbonization?
The success of Hydro and Rio Tinto’s initiative will depend on:
✅ Technological feasibility – Can carbon capture be scaled effectively?
✅ Economic viability – Will it be cost-efficient for aluminium producers?
✅ Regulatory support – Will governments incentivize decarbonization efforts?
Upcoming Milestones
? Pilot projects are expected to begin in the next few years.
? Research findings will shape the future of carbon capture in aluminium production.
? Industry-wide adoption of scalable decarbonization solutions may follow.
With a substantial financial commitment and a clear roadmap to net-zero, this collaboration could redefine aluminium’s role in a sustainable economy.
The aluminium industry has long been a pillar of modern infrastructure and manufacturing—now, it has the opportunity to become a leader in the global transition to a low-carbon future.


