Kvarteret Tärnan, constructed entirely from wood, has an estimated 60 percent lower climate footprint compared with a traditional concrete building. The project was completed in spring 2024, with the first residents moving into the housing units, followed shortly by the office tenants. In close partnership with Etikhus, which owns and manages the property, SI Varberg has developed a comprehensive building automation solution that manages and collects data on the building’s indoor climate.
The solution is based on Regin’s freely programmable controllers connected to the Arrigo Building Management System. The units communicate via the Modbus protocol to heating plants, ventilation units, and solar panels. In the office spaces, a variable air volume (VAV) system has been installed to adjust airflow dynamically based on demand.
“Consolidating all property data in Arrigo and being able to monitor the system remotely gives us a centralized overview of the building's performance. Regin’s solutions have also proven to be highly effective in building integrated systems with extensive communication capabilities”, says Niklas Wallenbeck, Project Manager at SI Varberg.
In the individual townhouses, a unique concept developed by SI and Etikhus integrates heating, ventilation, lighting, and other functions into a single platform, allowing residents to control their homes individually through an app. The concept illustrates a successful energy management model, ensuring energy is used where it’s needed.
Further system optimization and fine-tuning will continue going forward. At present, energy monitoring is active at the overall property level and for each apartment, providing a foundation for ongoing analysis and follow-up. With continuous refinement, Kvarteret Tärnan can further strengthen its position as a model for sustainable and energy-efficient living.
