App GameOpSys (IMAGE) Graz University of Technology Caption As part of the GameOpSys research project, people were asked to document their own energy consumption with a study app. Researchers at TU Graz use this data for modelling and optimising future energy systems. Credit © Lunghammer - TU Graz Usage Restrictions Photo is free of charge for editorial purposes. The use of the photo is only permitted provided that the source is cited in full together with TU Graz. The use of the photo for advertising purposes by institutions not affiliated with TU Graz is only possible upon request. 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.