The proof in practice.
OPENLY Valley Widnau breaks records
Largest "hemp house" in Europe
Savings of approx. 1000t CO2 (-70%) compared to a conventional building (based on Swiss standard SIA 2040)
First apartment building in Europe to be built completely CO2 neutral. CO2 capturing with certificates of 750t.
Largest biochar concreting stage (300m3 on 21.8.2023)
Largest project in Switzerland with re-use of steel beams
First project in Switzerland with 100% recycled and 100% neutralized reinforcing steel
400,000 kg clay fill in the ceilings & 48,000 kg clay building boards
First CO2 neutral kitchens
20 bathrooms with heat recovery and CO2-neutralized appliances from the manufacturers
Switzerland
Valley Widnau
Switzerland Valley Widnau
Facts about OPENLY
Valley Widnau
Total project volume: CHF 20 million (30 apartments)
Project management: OPENLY
Component Development & General Planner: OPENLY
Design / Building Submission Stage 1: Baumschlager Eberle Architekten
Specialist Planner: Partner
Construction management: Gantenbein & Partner
Stage 1: 2200m2 GFA, 19 condominiums sold*, completion 06/2024
Stage 2: Planned 2025, 1100m2 GFA, 11 apartments
Location: 9443 Widnau, Switzerland
Key Facts OPENLY Stage 1:
Construction costs: approx. 3,600 CHF/EUR/m2 floor area
CO2 balance creation: approx. 4kg/GFA. With CO2 storage , backed by certificates, the project already achieves net zero when it is occupied. See provisional CO2 balance
Heating and hot water Energy requirement: approx. 31,000 KWH (= approx. 14KWH/m2 net floor area)
Plus-energy house annual yield PV system: approx. 85,000 KWH (covers heating with heat pump, household electricity and approx. 200,000 electric car kilometres)
Number of employees: 8 OPENLY & approx. 20 specialist planners
Construction time: 12 months (excavation to occupancy)
*The penthouse of the first stage OPENLY Valley Widnau is still for sale.
Link to the advertisement
