Brenner Base Tunnel (IMAGE) Graz University of Technology Caption The drainage water from the Brenner Base Tunnel could supply Innsbruck's city districts with energy in the future. A research association led by TU Graz is exploring the possibilities. Credit © BBT SE Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.