Friends of the Irish Environment say they have been given leave to seek a Judicial Review of a proposed Liquefied Natural Gas (LNG) power plant in Co Kerry.
The environmental organisation contends there are "critical failures" in the Environmental Impact Statement submitted by the developer, Shannon LNG.
An Bord Pleanála gave permission for the 600 megawatt capacity power plant and an associated battery energy storage system in March.
The proposed development would be constructed on a 630 acre site near Tarbert in Co. Kerry.
The planning board said the facility was in line with climate legislation.
However, FIE says an environmental assessment significantly underestimated greenhouse gas emissions because "key calculation parameters" were not clearly identified.
It says emissions could be three times worse than those from a coal-fired power station and would be in breach of the State's climate mitigation targets.
The matter will be back before the courts later this month.
