This project in photos!
An innovative demonstrator in Finland with Dualsun
Among these demonstrators, the Kalasatama BEPOS building in Helsinki, inaugurated in 2023, perfectly illustrates this ambition. Located in a booming district, this eight-storey mixed-use building (residential, commercial and gastronomic) pushes back the limits of energy efficiency, even in northern climates.
Its hybrid energy system combines:
- Semi-deep geothermal wells (3000 m of MuoviTech tubes in 5 deep boreholes 600 m deep)
- Gebwell – puhdasta lämpöä heat pumps (140 kW)
- Photovoltaic panels
- 150 Dualsun SPRING hybrid solar panels (300 m2)
The integration of our SPRING hybrid solar panels plays a key role in providing additional renewable heat to the geothermal system, enabling ..:
🔥 Optimized heating and hot water production
💨 Improved ventilation performance
⚡ Intelligent energy management with two-way electricity exchange
Spectacular results
The results are spectacular: even in the middle of a Finnish winter, the heat pump achieves a COP of 5.0, and the building operates at positive energy, producing 23.6 kWh of solar electricity per square metre per year, for just 22.6 kWh of electrical requirements for the heat pump and its auxiliaries.
Through demonstrations in four different climates, EXCESS validates and shares reproducible energy solutions to accelerate the transition of the building sector in Europe.
With this project, Dualsun confirms its commitment to solar innovation and proves that autonomous, sustainable buildings are possible today.
Net monthly electricity consumption for heating
-140kW geothermal heat pump and 150 SPRING, Helsinki –
What if you too chose hybrid solar power for your projects?
➕ Learn more about solar geothermal energy
