The SONN GROUP has two divisions: energy and electrical engineering. It is therefore a one stop provider for power and energy ... supplies and electrical installations. We deliver everything from a single source. 24 hours a day, 7 days a week. SONN ELEKTROTECHNIK GmbH plans, installs and maintains the energy supply to industrial plants and power supply companies. SONN ENERGIE GmbH provides mobile technology and a wide range of rental equipment to supply power for building sites and events. The SONN GROUP is a fourth generation, medium-sized family-run company. read more