German energy company RWE has marked the 10-year anniversary of electricity generation at its Gwynt y Môr offshore wind farm, currently the largest operational renewable energy project in Wales.
Located off the North Wales coast, the 576-megawatt (MW) wind farm has produced approximately 18,000 gigawatt-hours (GWh) of electricity between June 2015 and June 2025—enough to power about 5.5 million typical UK homes over the decade, or roughly 550,000 homes annually.
“A decade of operation at Gwynt y Môr is a defining moment for RWE, the region, and our passionate team,” said Sven Utermöhlen, CEO of RWE’s offshore wind division. “This wind farm has been at the heart of transforming North Wales into a hub of expertise for offshore wind energy and has set a blueprint for potential new projects across the UK.”
Gwynt y Môr is operated by RWE, which owns a 50% stake, alongside Stadtwerke München GmbH (30%) and Macquarie’s Green Investment Group (20%). The project comprises 160 turbines and is managed from a purpose-built operations and maintenance base at the Port of Mostyn, which supports more than 100 skilled local jobs.
The site has become a centre for regional offshore wind training and development. RWE partnered with Coleg Llandrillo to launch an offshore wind apprenticeship programme, which now serves as the company’s national training hub.
An extension project, Awel y Môr Offshore Wind Farm, is being developed west of the original site in partnership with Stadtwerke München and Siemens Financial Services. The project, which has planning consent for 50 turbines, is set to become Wales’s largest approved renewable energy development.
Community engagement has been a focus throughout Gwynt y Môr’s lifecycle. The Gwynt y Môr Community Fund is expected to invest over £19 million in local initiatives during the wind farm’s operational life. During construction, a £690,000 Tourism Fund supported projects such as the Green Links Cycle Trail, which connects Prestatyn to Rhos-on-Sea and promotes tourism across the region.
Welsh politicians, including Dame Nia Griffith, MP for Llanelli, and Becky Gittins, MP for Clwyd East, joined RWE staff and contractors to commemorate the milestone.
Gwynt y Môr shows how renewable energy projects can bring extraordinary benefits, not only by powering hundreds of thousands of homes and tackling climate change, but by strengthening communities, creating opportunities, and enhancing skills,” Griffith said. “It’s inspiring to see the ongoing contribution it makes to a more sustainable future for Wales.
