Solution | Product, Service

BS2 Zeleganz

All-in-one energy system for emission-free buildings.

An all-in-one package based on a highly efficient heat pump with a groundsource heat exchanger for running an emission-free building. The solution is a single point of contact for consulting, planning, and installing the product.

The system allows a building to achieve maximal thermal autarchy and minimal electricity demand in winter. Its design streamlines the planning and implementation processes, and the heat pump's integrated control unit, coupled with a user-friendly interface app, enables easy and remote monitoring. Additional features like optimisation of on-site PV production or e-mobility can also be integrated to this unit. The efficiency achieved for heating, cooling, and supplying hot water are comparable to those of state-of-the art large-scale operations not normally attainable in smaller projects.

BS2: all-in-one energy system for emission-free buildings.

Key features for a positive impact on quality of life

  • All-in-one package of emission-free buildings system.
  • Low Exergy heat-pump system with maximum efficiency in Winter, leading to minimal external energy demand.
  • Competitive LCC due to standardization of thermodynamically complex system
  • Up to 94% reduction of CO2 emissions compared to a building system running on fossil fuels.


  • Stable and competitive long-term costs

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.


8952 Schlieren, Switzerland

Activity regions
Northern Europe, Southern Europe, Western Europe, United States,

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Solutions helps to achieve these SDG's.

  • Affordable and clean energy

  • Sustainable cities and communities

Maturity stage

Looking for

Visibility: publicity and marketing support; Networking: contacts to real estate stakeholders, communities and town officials; Partners: for further development of own products/patents

Categories of application
Photovoltaic, Solar thermal, Geothermal energy, Heat pumps, Power conservation, Collaborative electricity consumption systems, Energy-pooling, Thermal, Building, House, Design, HVAC, Water heating, Insulation, Heating, Building automation, Smart-building,