Spain’s energy majors Naturgy and Enagás, through the subsidiary Scale Green Energy, have taken a decisive step toward the decarbonisation of maritime transport with an agreement to construct and charter a next-generation liquefied natural gas (LNG) bunkering vessel for the supply of LNG and BioLNG to all types of vessels.

The vessel, to be named Mistral LNG, will have a cargo capacity of 18,900 m³.

Scale Green Energy, which started construction in early 2026, will operate the vessel, which will be chartered by Naturgy in 2028 under a long-term contract.

The vessel will operate primarily in the Iberian Peninsula, further strengthening its position as a strategic hub in southern Europe for the bunkering or supply of sustainable fuels, as well as in the area of the Strait of Gibraltar and the Canary Islands, among other destinations in the Atlantic.

The ship will have a length of 138.8 metres, a dual-fuel engine, a service speed of 13 knots and a range of more than 4,500 nautical miles.

The vessel, designed to supply LNG and bio-LNG fuel, will be equipped with advanced technology.

Enagás said the ship will be added to its current fleet of three: Levante LNG, Alisios LNG and Haugesund Knutsen,while Naturgy said the project positions itself as a strategic operator in the Iberian LNG bunkering market, which is expected to experience exponential growth in the coming years.