PNNL Lab Homes (IMAGE) DOE/Pacific Northwest National Laboratory Caption The PNNL Lab Homes, two identically constructed modular homes that are fitted with instruments and are unoccupied provide facilities for testing advanced home energy efficiency and smart grid-related technologies. The Lab Homes were used in the connected homes project to experimentally test, under realistic conditions, the controls designed to enable legacy home appliances to provide services to the electric power grid. Credit Photo by Michael Brambley | Pacific Northwest National Laboratory 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.