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Welsh Water green energy plant moves a step closer

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A facility close to Dinas Powys in Wales that will generate clean, green energy from sewage has taken a step closer towards completion.
Dŵr Cymru Welsh Water has invested more than £50 million (€57million) to create a new energy generating facility at its Cog Moors Wastewater Treatment Works.
The Advanced Anaerobic Digestion (AAD) facility, which recovers energy from the waste processed at the site and uses it to create electricity, has now entered its commissioning phase.
The construction of the AAD facility will enhance the existing anaerobic digestion plant at the site, enabling more biogas – to be recovered from the waste. The biogas recovered will then be used in engines to generate the electricity.
Once completed, the AAD will generate enough energy to power the works which will make it an energy neutral site. The energy it will produce would be the same as that needed to power 4,800 homes.
Shaun O’Leary, Welsh Water’s programme delivery manager, said: "The advanced anaerobic digester at Cog Moors will improve the way we treat the wastewater at the site, as well as help us to reduce our carbon footprint by producing renewable energy. It will also help keep customer bills down as we will be using our own energy to help power the treatment works.
"The work at Cog Moors has been ongoing since 2018, and we’re pleased to say that it’s nearing completion. The new process for recovering energy from the waste processed onsite will be in full service following the commissioning process, which is anticipated to be completed during the spring.”
As a company, Welsh Water is one of the largest energy users in Wales, operating and maintaining a network of 27,500km of water mains, more than 30,000km of sewers, 838 sewage treatment works and 66 impounding