Renewable energy is at the top of the list of improvements the world can implement to mitigate climate change. Renewable energy sources are key to achieving the sustainable development goals set by the European Union. However, the intrinsic characteristics of renewable energies, such as their intermitency and seasonality, mean that they are not a complete solution on their own and need to be supported by storage systems. One of the most attractive forms of energy storage is based on the use of hydrogen as an energy vector. In 2021, 30 plus countries have published hydrogen roadmaps. More than 200 hydrogen projects have been announced. Over 60 billion in public funding has been allocated. This momentum is accelerating cost reductions in hydrogen production, transmission, distribution and end use applications. This is where the Promet H2 project comes in, driving down the cost of the elements needed to produce clean hydrogen from renewable energy. The Promet H2 project will develop a polymer technology electrolyzer by reducing its current cost and achieving the lowest cost to date, down from 500 to 700 euros per kilowatt, while maintaining its performance and durability. And how will this be achieved? By the total replacement of critical raw materials with more environmentally and economically benign ones, making the system more sustainable and reliable. New catalysts and improved electrodes will be developed. Titanium will be replaced by stainless steel as the base material for the manufacture of the porous transport layer and bipolar plates. The stack design and optimization of the electrical system and balance of plant components will be improved. The new electrolyzer offering a capacity of 25 kilowatts will be tested in a renewable methanol production plant, allowing methanol to be obtained in a completely sustainable way. Behind Promet H2 there is an international partnership of 12 organisations from Germany, Italy, Spain, Belgium and Greece. Discover more at Promethifanh2.eu