About us

About us - Quality since 1921

The SONN GROUP has two divisions: energy and electrical engineering and is a one stop provider for power and energy supply and electrical installations. We provide you with everything from a single source – 24 hours a day, 7 days a week.


Our competencies at a glance

Sonn Elektrotechnik

SONN ELEKTROTECHNIK GmbH plans, installs and maintains the energy supply to industrial plants and power supply companies.

Sonn Energie

SONN ENERGIE GmbH provides mobile technology and a wide range of rental equipment to supply power for building sites and events.

Sonn Group

The SONN GROUP is a fourth generation, medium-sized family-run company.

© 2014 by Sonn Elektrotechnik GmbH Handcrafted by creartix design studio
Sonn App

The SONN app offers specialists and experts a mobile possibility to make a pre-selection for transformer fuses on the go and promptly. The HH calculator can be downloaded free of charge from the AppStores. Read more ...