Brenmiller Energy provides sustainable thermal energy storage solutions. The company was founded​ by Avi Brenmiller, former CEO of Siemens CSP and Solel, and a team of experts in the field of​ renewable energy. Since 2012 the company has developed a patented thermal energy storage​ technology based on storing heat using crushed volcanic rocks. The company is traded on Tel-Aviv​ Stock Exchange and has raised over $80m.