NGOs argue priority list was drawn up without consideration of methane emissions
An EU plan to fast-track funding and permits for 30 gas projects is facing a legal challenge from NGOs including ClientEarth and Friends of the Earth Europe.
The European Commission has been asked to review its backing for infrastructure projects such as the EastMed pipeline, a 1,180-mile (1,900km) gas pipeline to connect offshore gas fields in Israel and Cyprus to Italy.