This study has been carried out by the International Energy Agency and the Clingendael International Energy Programme to explore the status of hydrogen in the north-western European region and how the sector could evolve towards 2030. National policies and project plans for hydrogen development are brought together to explore opportunities to tap into the full potential of hydrogen as a clean energy vector. This paper aims to foster a deeper discussion about ways for countries in the north-western European region to collaborate and benefit from hydrogen developments in their neighbouring countries with a view to accelerating national deployment and the development of a regional hydrogen market.