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Ireland’s Largest Biomethane Plant Planned for Cork

siliconrepublic.com · 19 May 2026
Ireland’s Largest Biomethane Plant Planned for Cork
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Why this is here: The plant in Little Island, Cork, will process around 90,000 tonnes of combined food and garden waste each year to create renewable biomethane.

Gas Networks Ireland will connect a new €80 million biomethane facility in Little Island, Cork, to the national gas network. Stream BioEnergy operates the plant, which is slated to begin operations in 2027. The facility will process roughly 90,000 tonnes of food and garden waste annually using anaerobic digestion.

The plant expects to produce 80GWh of renewable biomethane yearly, enough to heat approximately 6,000 homes. Gas Networks Ireland notes this connection supports Ireland’s climate goals and waste management. It is the seventh biomethane plant contracted to join the national gas network in the last three years.

Stream BioEnergy anticipates the plant will reduce greenhouse gas emissions by about 40,000 tonnes of carbon dioxide each year. Further contracts for additional biomethane plants are currently under discussion, suggesting continued development in this area.

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