Green Highland has successfully provided mechanical service support for the overhaul of the Unit 1 turbine generator at the Maentwrog hydroelectric power station in North Wales. The project involved full internal inspections of key turbine components, including the removal of the runner, guide vanes, and unthreading of the rotor to carry out necessary maintenance on the generator.

The Maentwrog station is operated by Nuclear Restoration Services Ltd (NRS), a subsidiary of the Nuclear Decommissioning Authority. NRS appointed Quartzelec, an independent electrical engineering group, to manage the overhaul. Quartzelec selected Green Highland for the project due to its extensive experience in hydropower maintenance across the UK and internationally. Green Highland is also part of Voith Hydro, a global leader in hydropower services.

During the project, two NRS apprentices worked alongside Green Highland’s team to gain hands-on experience in hydropower maintenance and collaboration on large-scale projects.

“The successful completion of the Unit 1 overhaul project was achieved by all involved working together to deliver the requirements of the project; ensuring future operation and continued green generation of electricity from Maentwrog,” said Mike Merritt, Maentwrog Station Team Leader. “With special thanks to the GHR site team for working with our apprentices, sharing their knowledge and expertise cementing the future for Hydropower.”

Alex Reading, CEO of Green Highland and Chair of the British Hydropower Association, added: “Hydropower is a vital source of clean, locally sourced, predictable power. With the right maintenance, hydropower assets can generate power long into the future. Green Highland, as part of Voith, provide a world-leading service to these projects and this is made possible by the expertise and decades of experience of the Green Highland and the Voith team. We are delighted to be working with NRS and Quartzelec to ensure the Maentwrog Plant continues to provide vital power now and for a long time to come.”