NET-ZERO ENERGY RESIDENTIAL TEST FACILITY (IMAGE) Colorado State University Caption The Net-Zero Energy Residential Test Facility (NZERTF) is a unique laboratory at the National Institute of Standards (NIST) in Gaithersburg, Md. Credit Photo by John Eisele/Colorado State University Photography Usage Restrictions Please credit Colorado State University 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.