Skip to main content
Based in Isère and Rhône, the start-up Heliosand has raised €400K to accelerate the industrialization of its solar furnaces for industrial applications. The company is set to commission its first units in the coming weeks. In its workshop in Saint-Marcellin (38), the Heliosand team is busy manufacturing these unique yet highly efficient machines. Each unit features a 4 m² lens that, by concentrating the sun’s rays, transforms quarry sludge into obsidian. Obsidian is a volcanic rock used in jewelry and, more notably, in the production of glass wool, explains Rafik Kheffache, founder and CEO of Heliosand. Three machines are expected to be operational this summer, with two more by the end of the year. They will be installed in the South, between… […]