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: Zeversolar, New Residential, Commercial business, Utility and Service business units and Other. The Residential and Commercial, Utility and Service business units take an overall responsibility and manage development, sales and operations. The Zeversolar segment manufactures inverters in low to medium power classes, Jiangsu ZOF inverters of higher power classes. 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.