Comal SpA specializes in the construction of large-scale photovoltaic power plants. It operates through the Renewable Energy and Conventional Energy business units. The Renewable Energy business unit engages in engineering, purchase, construction, and management activities of photovoltaic systems; and provides assistance in the operations and maintenance department. The Conventional Energy business unit involves in the ordinary and extraordinary maintenance of conventional power plants. The company was founded by Guido Paolini on May 26, 2001 and is headquartered in Montalto di Castro, Italy.