The Environment Agency Wales has granted a permit for an AD waste treatment plant at Bodfforddin Mona, Anglesey.
The Anglesey EcoParc Mon plant will process up to 25,000 tonnes of organic waste per year to produce liquid and solid fertiliser and a gas will be used to generate electricity.
Planning permission to build the AD plant was granted last January and the EA Wales indicated in April that it was likely to grant the permit.
EA Wales’ area manager for North Wales David Edwell, said: “A rigorous assessment over the last few months shows that plans are in place to operate this plant to the highest environmental standards.”
“If the plant is built, Environment Agency Wales officers will enforce the strict emission limits and operating standards throughout its lifetime.”