Location
Description
The EXCESS Positive Energy Building (PEB) in Finland is being developed in the Finish capital Helsinki close to the sea side. Located in the fast developing Kalasatama smart district, the building will serve mixed residential, commercial and gastronomical uses. The EXCESS demo building consists of eight floors and is to support the transition of Helsinki’s building stock.
Demo Site Expected Impact
By demonstrating the viability of nearly zero and positive energy solutions for residential and mixed type of buildings, the project is to contribute to the facilitation of a new low-carbon standard for the housing sector in the city.
Technologies
Buildings and energy
The energy system in place for the Kalasatama PEB is a hybrid geothermal energy system. It combines semi-deep geothermal energy wells with coaxial collectors in ~800 meter deep boreholes, heat pumps, PV panels and solar thermal PVT (combined PV and thermal panels) that will produce electricity and heat for the building. To increase temperature levels to a suitable level for space heating and domestic hot water, the hybrid energy system utilises heat from the PVT panels, ventilation and ground source heat with heat pumps. The building structure, heating, ventilation and air conditioning will be designed as energy efficient as possible. To optimise the overall energy system performance, an integrated smart control system enables demand response and two direction electricity trade.
Mobility & Transport
The building complex will include a rental car service to decrease the needs for parking space and expensive underground parking halls in dense living areas.
ICT
Optimisation algorithms to control a hybrid energy system according to weather forecasts and energy markets developments for flexible demand response and two direction electricity trade.