The core activity of Bertholet Services Techniques-BST Sàrl is the provision of services in the field of electrical engineering and energy consulting, particularly: planning, monitoring and control of electrical installations, conducting energy audits and creating energy certificates (CECB), inspecting electrical installations in accordance with OIBT, measuring and analyzing electromagnetic pollution, advising and supporting the planning and implementation of construction projects, and providing administrative support for the application of building permits and other administrative procedures.