Energy Panel Structures, (EPS) is a recognized leader as a manufacturer of pre-engineered buildings which are custom designed to fit your needs and then built for you by our network of professional builders. EPS manufactures pre-engineered building components designed for post frame construction, structural insulated panels and refrigerated and freezer structures. With an independent dealer network of over 400 professional builders, EPS serves all of the U.S. except for the far west and southwest states. EPS is headquartered in Graettinger, Iowa with an additional manufacturing location in Perryville, Missouri. We are an employee-owned company and have been manufacturing superior building components since 1981.