Large-scale Power Plant (IMAGE) Fraunhofer-Gesellschaft Caption 60 percent of the energy used in large-scale power plants is lost as waste heat through the cooling tower. Credit Fraunhofer UMSICHT Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.