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Kummler+Matter EVT

Bouygues Energies & Services St. Gallen

In all Bouygues Energies & Services' projects, the needs and concerns of our customers take priority, regardless of whether it's a one-off contract or a long-term collaboration. That's why it's not only our expertise that is crucial to the service we provide, but also our responsiveness to specific local characteristics. We are anchored in the regions, and this gives us constant proximity to our customers.

Our services

Electrical engineering

Whether a large- or small-scale system – every electrical system must be energy efficient, permanently available and safe. Our solutions and services range from planning through commissioning and installation to maintenance and repair.


Warmth and water are basic human needs, which, thanks to our competence, we deliver in high quality to wherever people live or work. We are not only strong in the areas of heating and sanitation.

ICT services

We are among the leading providers in the area of information and communications technology. We ensure substantial added value for our customers by applying state-of-the-art technologies and offering expert services from a single source.

Security & building automation

Our Security & Automation division offers comprehensive solutions for comfort and security in buildings with cross-system experience.

Technical Services

Bouygues Energies & Services InTec is your reliable partner for Technical Services projects, tailored to your individual needs. With our diverse range of services we take care of all essential building management services for you.

Where to find us


Lindentalstrasse 10
9000 St. Gallen

General opening times

Mon – Fri: 7.30–11.45 / 13.00–16.45

To contact

Plan route


Managing Director Region
+41 71 242 22 88
Martin FREY
Division Manager Electrical
+41 71 242 22 30
Head of Department electrical
+41 71 242 22 33
Christian BUSINGER
Head of Department electrical
+41 71 242 22 62
Stefan MEIER
Head of Department electrical
+41 71 242 22 32
Head of Department electrical service
+41 71 242 22 60
Head of Department ventilation/air-conditioning
+41 71 242 21 80
Head of Department sanitation
+41 71 242 21 38
Team Leader HVAC service
+41 71 242 21 70
Dominik HOFER
Team Leader switchgear construction
+41 71 242 21 50
Team Leader heating
+41 79 917 34 42