TotalEnergies' Masshylia green hydrogen project at the La Mède platform near Marseille has moved from pilot phase into daily operation. The site combines large photovoltaic capacity with a 40 MW electrolyzer to produce up to 15,000 tons of renewable hydrogen per year. This hydrogen replaces grey hydrogen from natural gas in nearby industrial processes, cutting associated CO2 emissions, and also supplies fuel stations for heavy trucks and buses in southern France. The project is a joint venture with Air Liquide and backed by French and European public funding. It includes buffer storage to manage solar variability, running electrolyzers harder during sunny hours and maintaining steady deliveries to industrial customers. The Marseille-Fos industrial zone offers strong solar resources, port infrastructure, and concentrated industrial demand, making it a strategic location for scaling green hydrogen integration between sectors. Despite the promising design, Masshylia faces the challenge that green hydrogen remains more expensive than fossil-based hydrogen. TotalEnergies and its partners are counting on falling electrolyzer costs, rising carbon prices, and continued subsidies to close the gap over time. The project is part of a broader hydrogen portfolio aimed at decarbonizing refineries and building export corridors in Europe and the Middle East.
