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Teréga and HyLight are testing the HyLighter dirigible for pipeline monitoring in France, focusing on the Cazilhac-Narbonne-Claira section. This 107 km initiative aims to fulfill systematic leak detection obligations through six planned bimonthly overflights in 2026, subject to regulatory approval.

The dirigible, which flies at 20-30 meters and is powered by a hydrogen fuel cell, emits no greenhouse gases and significantly reduces noise pollution compared to helicopters. The project aims to evaluate the dirigible's capacity to meet monitoring requirements while minimizing the carbon footprint, potentially informing future network monitoring systems.