efficiency of solar cells outside, you have the sunlight available all the time. it is a very good location to have the laboratory. we re in front of what s called the rsf, or research support facility. this is going to be a zero energy office building. zero net energy means that over the course of the year we ll produce more energy than we actually take from the grid. the building itself is designed to be fairly thin in its wings and sections so that we can bounce daylight 30, 40 feet into the space. this is going to be the lead plat of the building. there are in ceilings in the offic offices. that will help to allow the daylight through the space as well. percentage of recycled material, beetle kill. but it s pined from the colorado forests that have been decimated by the pine beetle.