The Berkeley Lab is building a “national user facility” that will attract researchers from around the U.S. and the world to study best practices for improving building energy efficiency. The lab will focus on creating net-zero energy buildings that create as much energy as they consume. The lab will test new air conditioning systems, lighting, on-site power generation, plus new kinds of roofs and skylights. Additionally, the lab will investigate new methods of constructing windows, walls and floors.