Luxembourg-based steel producer ArcelorMittal has commenced full-scale manufacturing of Helioroof, a solar-enabled insulated roofing solution. This innovation provides a dual advantage of power generation and improved thermal regulation for buildings across industries. Each Helioroof module is custom-made up to 12 metres, delivering up to 2.1 kWp and weighing about half of a traditional PV roof. ArcelorMittal has stated that the product uses its XCarb recycled and renewably produced steel grades, achieving a 25% lower carbon footprint than standard insulated roofs. The module was developed in partnership with Belgium’s CRM Group after five years of research and is protected by 15 patents. Production has been established at Contrisson, France, on a fully automated line equipped with “grey room” handling for solar cell protection. Early installations were completed across 1,500 square metres in Liège, Haut-Rhin, Meuse, and Marne. Helioroof has received support from the EU Innovation Fund’s Helexio Line project and won the 2024 Smarter E AWARD in Photovoltaics.