Buildings – Empowering savings potential (IMAGE) DOE/Oak Ridge National Laboratory Caption The 3D printed concrete smart wall installed at ORNL over the summer was monitored for energy efficiency, with preliminary results showing a minimum of 8% cost savings. Credit 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.