A 576 MW offshore wind farm in Liverpool Bay off the North Wales coast. It is the largest operating renewable energy project in Wales and was the world's second-largest offshore wind farm when it opened in 2015.
Gwynt y Môr (Welsh for “sea wind”) is a 576 MW offshore wind farm in the Irish Sea, 13 kilometres off the North
Wales coast at its nearest point and 16 kilometres from Llandudno. RWE developed and built the project and
operates it on behalf of a joint venture with Stadtwerke München and Macquarie’s Green Investment Group.
Construction began in 2012 and the wind farm was inaugurated in June 2015. Its 160 Siemens 3.6 MW turbines
stand on monopile foundations in water depths of roughly 12 to 33 metres, across a site of around 80 square
kilometres. Operations are run from a dedicated operations and maintenance base at the Port of Mostyn, which
supports around 100 long-term jobs. The project marked ten years of generation in 2025.
Liverpool Bay is shallow, exposed and busy. A large tidal range and strong tidal streams set tight windows for
vessel access and technician transfers. The operations port at Mostyn lies in the Dee Estuary, where tidal access
shapes daily vessel scheduling. The site sits alongside neighbouring wind farms and the shipping routes into the
Mersey, so marine coordination must account for surrounding vessel traffic as well as weather. Irish Sea winter
storms and short daylight hours further compress the working season.
Contact Nautic Energy to discuss marine coordination and site management support.
