Self Sufficient Energy House in Rédange (Luxembourg)

Last modified by the author on 10/09/2015 - 12:20
  • Building Type : Isolated or semi-detached house
  • Construction Year : 2015
  • Delivery year : 2015
  • Address 1 - street : 36 rue de Nagem 8509 RéDANGE SUR ATTERT, Luxembourg
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 225 m2
  • Construction/refurbishment cost : 530 000 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 2355.56 €/m2

Proposed by :

  • Primary energy need
    35.1 kWhep/
    (Calculation method : RGD du 30 novembre 2007 - bâtiment d'habitation )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

Construction of a new passive house which uses solar panels to generate all of its own electricity to meet its heating and lighting requirements and which also produces its own water for daily use by collecting rainwater and treating it with UV light. In addition, the house also produces electricity for an electric vehicle which travels +/-25000km a year.
Heating is supplied using a ground-water heat pump and the air is renewed by a dual-flow CMV.

See more details about this project

Data reliability




    Mr et Mme Boon-Bellinaso / Vandenbussche

Contracting method

Separate batches

Owner approach of sustainability

As both the client and contractor on this project, we wanted to make a self-sufficient home in terms of energy and water and we opted for a 100% electric car which will be powered by our own electricity generated by the solar panels. All energy-consuming devices have been chosen for their low electricity consumption (e.g. LED lighting).

Architectural description

Massive passive house, using: 1) the ground to power a ground-water heat pump which heats the house, 2) rain to supply all water outlets, 3) the sun to generate the electricity required for heating and for domestic electricity as well as for "fuelling" an electric car which travels +/-25,000km/year.

Energy consumption

  • 35,10 kWhep/
  • 95,00 kWhep/
  • RGD du 30 novembre 2007 - bâtiment d'habitation

  • 32,91 kWhef/
  • heating: 4.14kwh/m2/year
    domestic hot water: 4.71kwh/m2/year
    secondary heating and ventilation + cooling: 4.96kwh/m2/year
    lighting and domestic appliances + office for freelance professional: 19.1kwh/m2/year

    the house is fitted with solar panels which meet all of the annual electricity requirements.
    In addition, the panels meet the requirements of an electric car which travels +/25,000km/year.

Envelope performance

  • 0,23 W.m-2.K-1
  • Concrete-structure house. Expanded polystyrene insulation on the sides, polyurethane on the floor and roof. Triple-glazed window frames.

  • 0,54
  • EN 13829 - n50 » (en 1/h-1)

  • 0,54


    • Geothermal heat pump
    • Low temperature floor heating
    • Heat pump
    • Geothermal heat pump
    • Floor cooling
    • Free-cooling
    • Double flow heat exchanger
    • Solar photovoltaic
    • Heat Pump on geothermal probes
  • 200,00 %

GHG emissions

  • 8,60 KgCO2/m2/an

Water management

  • 6,00 m3
  • 70,00 m3
  • Provision on the network for future integration into a system for recovering domestic waste water.


    Stiebel Eltron WPF5cool heat pump

    Stiebel Eltron

    Génie climatique, électricité / Chauffage, eau chaude

    Power 5.92KW, performance coefficient (COP) 4.46

    selected jointly by the various stakeholders for this plot

Urban environment

Semi-detached house in a residential street of detached houses

Land plot area

640,00 m2

Built-up area

122,00 %

Building Environmental Quality

  • water management
  • energy efficiency
  • renewable energies

Building candidate in the category

Bâtiment zéro énergie

Bâtiment zéro énergie

Green Building Solutions Awards 2015

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Author of the page

Leslie vandenbussche

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Green Building Solutions Awards 2015