ORNL TVA power lines (IMAGE) DOE/Oak Ridge National Laboratory Caption High-voltage power lines carry electricity generated by the Tennessee Valley Authority to Oak Ridge National Laboratory. Credit Dobie Gillispie/ORNL, U.S. Dept. of Energy Usage Restrictions none 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.