Planning approved for multi-million Mayo hydrogen plant
Planning has been approved for the Mayo facility.
Planning permission has been granted for a hydrogen plant and energy centre in Killala.
Mayo County Council has given the green light to the multi-mullion euro development which will be located at the former Asahi site in the North Mayo town.
The local authority has granted planning permission to Constant Energy for the project subject to 13 conditions.
The hydrogen plan will consist of a 24m double storage electrolyser building and fin fan coopers of up to 10.5m in height. Also included in the plan is a Hydrogen Storage Area; Hydrogen Gas Tube Filling Station; Gas Injection Compound and Gas Above Ground Installation Building; Electrical Substation and Ancillary Equipment Building.
The Energy Centre, to the north of the site, will consist of nine Gas Engines generating up to 106MW of power, housed in a Gas Engine Building of up to 13.6m height with two stacks of up to 25m height, and a Distillate fuel tank of up to 11.2m height.
The Proposed Development includes the demolition and removal of the existing Asahi Plant buildings, foundations, as well as decommissioning and removal of the existing overhead, above ground drainage system and underground services.
Alan Dillon, Minister of State at the Department of the Environment, Climate and Energy, has welcomed the approval of planning permission for the project, calling it a major step toward Mayo’s ambition to lead Ireland in clean energy and become a national hub for green industry.
“This is a significant moment for Killala and North Mayo,” said Minister Dillon.
“Transforming the former Asahi site into a 106MW Energy Centre and cutting-edge Hydrogen Plant is not just a substantial investment in renewable infrastructure, it’s a clear move toward establishing Mayo as a Green Energy Industrial Hub,” he added.
Minister Dillon highlighted Mayo’s strategic position on Ireland’s west coast as a key advantage in the national energy transition, “Mayo commands a leading share of Ireland’s west coast, which has the potential to power the next generation of green hydrogen production and supply of large energy users. This is about more than clean energy, it’s about innovation, economic resilience, and long-term sustainability.” Minister Dillon stressed that the benefits of these developments must be felt locally, “Projects like Constant Energy’s investment in Killala must deliver real, tangible benefits for local communities, whether through employment, infrastructure, or community energy schemes. These initiatives are not just about energy; they’re about supporting our communities, revitalising our towns, and securing a sustainable future for generations to come.”
