Consultation Period
30/03/26 – 01/05/26
Overview
C-Zero Ltd and Vale Clydach Nickel Refinery are pleased to announce a carbon mineralisation project designed to reduce industrial greenhouse gas emissions and remediate historic basic oxygen steelmaking (BOS) slag in South Wales. The project will capture CO₂ from the nickel refinery in Swansea and react it with BOS slag at the Tata Steel Port Talbot site to create stable calcium carbonate and aggregate products.
This initiative aims to deliver permanent carbon storage and create useful construction materials from an existing industrial waste stockpile.
Why this project
By combining C-Zero’s mineralisation technology with Vale’s refinery operations and BOS slag at Port Talbot, the project is expected to:
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Permanently sequester CO₂ emissions from the refinery in mineral form.
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Remediate a long-standing BOS slag stockpile in a controlled manner..
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Contribute to regional and national net-zero ambitions.
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Demonstrate a scalable, circular-economy solution for heavy industry in South Wales.
Benefits to the community
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Long-term investment in low-carbon industrial infrastructure.
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Skilled employment opportunities in operations, testing and logistics.
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Reduced environmental risk from historic industrial waste.
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Potential local supply of lower-carbon aggregate.
Site Locations
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Vale Clydach Nickel Refinery - Ynyspenllwch Rd, Clydach, Swansea SA6 5QR
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Port Talbot BOS Slag Stockpile - Tata Steel, Port Talbot, SA13 2NG
Feedback
Stakeholders are invited to provide their feedback on the proposed development by 01/05/26 on the form below