Project consultation · –
Carbon mineralisation project at Vale Clydach Nickel Refinery
C-Zero Ltd and Vale Clydach Nickel Refinery are developing a project to reduce industrial greenhouse gas emissions and remediate historic basic oxygen steelmaking (BOS) slag in South Wales.
Overview
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 — permanent carbon storage and useful construction materials from an existing industrial waste stockpile.
Why this project
- Permanently sequester CO₂ emissions from the refinery in mineral form.
- Remediate a long-standing BOS slag stockpile in a controlled manner.
- Contribute to regional and national net-zero ambitions.
- Demonstrate a scalable, circular-economy solution for heavy industry in South Wales.
Benefits to the community
- Long-term investment in low-carbon industrial infrastructure.
- Skilled employment in operations, testing and logistics.
- Reduced environmental risk from historic industrial waste.
- Potential local supply of lower-carbon aggregate.
Site locations
Vale Clydach Nickel Refinery
Ynyspenllwch Rd, Clydach, Swansea SA6 5QR
Port Talbot BOS slag stockpile
Tata Steel, Port Talbot SA13 2NG
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