Limerick Chamber has welcomed the High Court's decision to uphold the planning permission granted by An Coimisiún Pleanála for a 600-megawatt power plant in Ballylongford, Co Kerry.
The ruling comes following a lengthy planning and regulatory process.
It has been described as a landmark outcome by the business group, which is urging expediency to bring forward the Liquefied Natural Gas (LNG) terminal infrastructure.
The chamber said the decision provides "much needed clarity" on the project, which has been subject to multiple objections and policy scrutiny over a number of years due to environmental concerns.
It said the ruling now marks a significant step forward for strategic energy infrastructure and storage along the Shannon Estuary.
Welcoming the decision, Limerick Chamber CEO Donnacha Hurley said this follows "what should have been a seamless process" but turned into a "complex and protracted planning process that was bolstered by misalignment of Irish and EU policy".
Mr Hurley said if Ireland is to get serious about tackling energy insecurity, "then we need to ensure a much more efficient planning process for operators".
He said there must be an urgent timeline for the next stages of the project.
