Wärtsilä partners Grieg Edge to build worldâs first green ammonia tanker 21 Dec 2020 Maritime technology group Wärtsilä on Friday (18 December) said it will be jointly running a project with Grieg Edge, the innovation hub of Norwegian shipping group Grieg Star, to launch an ammonia-fuelled tanker that produces no greenhouse gas emissions by 2024 With Norwegian government support worth NOK 46.3 million NOK (USD 5.3 million) under the Pilot-E funding scheme, the partnership aims to build the world’s first green ammonia fuelled tanker. The MS Green Ammonia will be a vital link in the new green ammonia value chain and the vessel will start sailing in 2024 to set a new benchmark for future low emission vessels.