Switzerland’s energy producer Axpo on Tuesday (26 May) said it has successfully completed the first LNG bunkering of a cruise ship in Naples, Italy, it was announced today. The ship-to-ship bunkering operation of the Sun Princess , operated by Princess Cruises, part of Carnival Corporation, took place on 24 May. The operation at the Port of Naples, was performed using the LNG bunkering tanker Green Zeebrugge , previously deployed in the Port of Genoa. The transfer of LNG to the cruise ship Sun Princess represented a key step in the expansion of LNG in the maritime sector, thereby supporting emission reduction efforts within this industry. Axpo’s Head of Small-Scale LNG Daniele Corti , said: “This operation is further demonstration that an alternative fuel infrastructure is truly up and running. When industry partners collaborate towards a common goal, Europe’s shipping industry makes real progress towards lowering emissions. I’d like to thank the local authorities and Carnival Corporation for enabling this significant milestone.” “This milestone marks important progress for Carnival Corporation as we continue expanding the use of LNG across our world-class cruise lines including Princess Cruises,” said John Haeflinger, senior vice president, maritime policy and analysis, Carnival Corporation. “Advancing access to alternative fuels in key ports is essential to supporting our efforts to reduce emissions, and this milestone reflects the power of collaboration across our industry. The successful operation is the result of close collaboration between Axpo, the Port System Authority of the Central Tyrrhenian Sea, Terminal Napoli, and the Port Authority of Naples, which coordinated operational and regulatory activities related to the bunkering operation.   Photo credit: Axpo Published: 29 May, 2026