CO2 neutral buildings in CH-Männedorf - fully self sufficient

New Construction

  • Building Type : Collective housing < 50m
  • Construction Year : 2019
  • Delivery year : 2020
  • Address 1 - street : Saurenbachstrasse 8707 MäNNEDOERF, Switzerland
  • Climate zone : [Dwa] Humid Continental Hot Summer, severe, dry winter

  • Net Floor Area : 1 884 m2
  • Construction/refurbishment cost : 7 200 000 €
  • Cost/m2 : 3821.66 €/m2

Certifications :

  • Primary energy need :
    40.07 kWhpe/m2.year
    (Calculation method : Other )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

The latest lighthouse project of Umwelt Arena Schweiz in cooperation with exhibition partners and the HSR Hochschule für Technik Rapperswil is the first residential building in the world with an intelligent and consistent combination of photovoltaics, battery storage, synthetic e-gas/biogas and intelligent energy management (hybrid box). All this at amortizable costs for the building owner and the residents receive heat and electricity at zero cost.  

A self-sufficient building with high-tech-eco-systems and products :

- A beautiful project realized by the owner of the Umweltarena in CH-Spreitenbach and designed by René Schmid Architekten AG in CH-Zurich. 

- The buildings produce 105'900 kWh per year by BIPV-elements,  PV-rooftop-installations, wind-turbine and other sources. The non-used energy (summer) is transferred and turned into synthetic methane (which is CO² neutral) and can be re-electrified in winter. So the buildings produce more than consume.

- What is available as production and storage of renewable energies has been implemented.

- The tenants do not have to pay for electricity and heating. 

- Some of the BIPV-elements are white - which is unique and gives new architectural possibilities.

 

Data reliability

Self-declared

Photo credit

Solaxess

Contractor

    René Schmid AG, CH-Zurich // Solaxess SA CH-Marin

    Mr. René Schmid // Peter Röthlisberger

Construction Manager

    Umweltarena

    Mr. Robert Grill

Stakeholders

    Others

    Umweltarena, CH-Spreitenbach

    Mr. Robert Grill

Contracting method

General Contractor

Owner approach of sustainability

More information available at René Schmid

Architectural description

Very fonctional and ecological buildings with all comfort but without wasting energy. 16 flats of different sizes, close to the city-center of Männedorf. Clear in its modern forms. Autark in all aspects. Creative combination of activated facade-elements.

Ideal combination of power-generators and colors. A house looking similar to 1000 others - but having its huge and unvisible ecological and energetical qualities  

If you had to do it again?

Always with pleasure - with even more and newer technologies.

Building users opinion

Facinated.

Energy consumption

  • 40,07 kWhpe/m2.year
  • 75 502,00 kWhpe/m2.year
  • Other

  • 40,07 kWhfe/m2.year
  • Houshold: 43'357, Hotwater 15'849, Heating 16'296

    This buildings produce more than they consume.

Systems

    • Geothermal heat pump
    • Combined Heat and Power
    • Heat pump
    • Water chiller
    • Natural ventilation
    • Solar photovoltaic
    • Heat pump (geothermal)
    • Micro wind
    • Biogas boiler
    • Energy recovery from waste
    • Other, specify
  • 100,00 %
  • Photovoltaic system:
    A ventilated photovoltaic façade envelops the entire building. The building material (facade panels) was replaced with active photovoltaic elements. The photovoltaic panels are directly screwed to the substructure in wood. In order to make this simple installation possible, the photovoltaic modules have been specially prefabricated with mounting holes.
    White and dark, colored and textured photovoltaic facades like the ones we use in Männedorf serve as weather protection and energy generation at the same time.

    Synthetic Methane:
    Some of the excess solar power generated by the Männedorf superstructure in summer is sent to the power-to-methane pilot plant at the University of Applied Sciences in Rapperswil, where it is used to produce synthetic methane. This gas is CO2-neutral and is temporarily stored in the gas network, from where it is made available again to the residential complex in Männedorf in winter. There, the so-called Hybridbox® is used as the most important link, which, as an intelligent energy system, produces electricity and heat from the CO2-neutral "synthetic gas / biogas" as required.

GHG emissions

  • 40,00 year(s)

Product

    Beautiful white solar modules

    Solaxess SA

    Peter Röthlisberger

    Structural work / Structure - Masonry - Facade

    With the unique color-giving technology of Solaxess PV-Modules are transferred into a construction material. Also in white and bright colors. No solar-cells are visible - even not from close.

    Loved by architects and construction companies.

Construction and exploitation costs

  • 9 000 000

Land plot area

2 879,00 m2

Built-up area

2,00 %

Parking spaces

The parking does also offer a CNG-filling station and charging station for EVs.

Building Environmental Quality

  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • renewable energies
  • mobility

This building has received the Watt-d'or award in 2021.

More than 18 different eco-friendly-energy production- storing and safing-systems combined to one system: Roof-top-Solar, beautiful white BIPV modules from Solaxess, wind-turbine, energy-mgt-systems, energy-budgets for tenants, smart-home-mgt, Joulia-Shower, energy-efficient-elevator and so on.

Contest categories

Energy & Temperate Climates

Energy & Temperate Climates

Green Solutions Awards 2020-2021

 CO2-neutral
 only renewable energies used
 white solar modules
 BIPV

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    Green Solutions Awards 2020-2021