M+W Group, with headquarters in Stuttgart, Germany, is one of the leading global companies in the field of high-tech engineering, procurement and construction. From concept development to turnkey solutions, the Group manages projects of all sizes for many industries.

In 2010 the firm Ritter XL Solar GmbH, based in Karlsbad near Karlsruhe in Germany, was founded as the youngest member of the Ritter Group. The focus of Ritter XL is the development, distribution, planning and installation of large- and very large-scale solar thermal systems.