SMA Solar Technology AG is engaged in the development, production and sale of solar inverters and monitoring systems for photovoltaic applications. It operates its business through the following segments: Residential, Commercial business, Utility, Service business units and Other Business. The Residential, Commercial, Utility and Service business units take an overall responsibility and manage development, sales & operations. The Other segment deals with railway technology and off-grid & storage business. SMA Solar Technology was founded by Reiner Wettlaufer, Peter Drews, Werner Kleinkauf, and GÃ¼nther Cramer in 1981 and is headquartered in Niestetal, Germany.