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Roadstone is proposing an anaerobic digestion (AD) plant at Killough quarry in Co Tipperary, requiring 15,000t of chicken manure, 20,000t of cattle slurry, 60,000t of grass silage, and others as feedstock. The second public consultation involved Roadstone and partners Utopia and Climaticus, addressing local concerns.

The facility aims to decarbonize operations by producing biomethane to replace diesel and LNG, with surplus gas for export. The planned plant will utilize the Antec system for improved efficiency. Engagement with local objectors is ongoing, with concerns raised about location and traffic impacts.