The application has been lodged with Flintshire County Council, with a decision expected in early 2026.
The Deeside facility is already home to a carbon capture and storage (CCS) pilot plant, which has been operating on site since April 2025.
The pilot unit, installed and operated by global contractor Kanadevia Inova, was transferred from Enfinium’s Ferrybridge-1 facility in West Yorkshire, where it had previously been trialled.
Mike Maudsley, Chief Executive Officer at Enfinium, said: “This is another important step in making carbon capture at Parc Adfer a reality.”
Parc Adfer carbon capture and storage
Parc Adfer, which opened in 2019, was developed in partnership with the five local authorities that make up the North Wales Residual Waste Treatment Partnership (NWRWTP).
According to Enfinium, the facility currently diverts up to 232,000 tonnes of waste from landfill each year.
Plans to add full-scale carbon capture technology were first announced in April 2024.
The project has since been shortlisted by the UK Government as a standby scheme for potential grant support to connect to the HyNet North West carbon capture and storage network, which is currently under construction in the region.
Under the proposals, carbon dioxide captured from the EfW process would be transported for permanent storage in depleted gas reservoirs.
Enfinium previously announced that it has partnered with Isometric as its carbon registry partner for the Wales site.
Maudsley added: “Using carbon capture technology Parc Adfer would be the largest carbon removals project in Wales, helping to decarbonise North Wales’ unrecyclable waste while supporting economic growth, skills and employment in the local economy.”
A public consultation on the project ran from 8 September 2025 to 6 October 2025, giving local residents and regional stakeholders an opportunity to review the plans and provide feedback.
Enfinium said the consultation included both in-person and online events to ensure broad participation.
Subscribe for free