Reaching net-zero emissions by 2050 will require the deployment of hydrogen as a central low-carbon energy vector. Despite its potential, the current green hydrogen value chain is still at an early stage, with only a small number of projects in operation worldwide. In this context, the establishment of hydrogen valleys, combined with Ireland’s abundant wind resources, could enable large-scale production of hydrogen, while playing a decisive role in helping reduce emissions for hard-to-abate sectors, such as heavy industry, transport, and power generation. The decarbonization of energy-intensive industries represents a major challenge for meeting European climate targets. In particular, the cement sector is among the largest industrial emitters, and innovative solutions are required to reduce its carbon footprint.