ECOSun Parabolic Solar Collector (IMAGE) Graz University of Technology Caption A cooling liquid flows along the back of the solar cells, absorbing and utilising the waste heat from the concentrated solar radiation. Credit EMS - TU Graz Usage Restrictions This image may only be used in direct connection to the content of this press release. License Original 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.