The Commission is in the process of updating some of the content on this website in light of the withdrawal of the United Kingdom from the European Union. If the site contains content that does not yet reflect the withdrawal of the United Kingdom, it is unintentional and will be addressed.

HEM Rehabilitation ENERGIESPRONG (smart) - France

Share this Post:

The 10 houses of Hem are the first homes rehabilitated in France to zero energy and any form of consumption guaranteed for 25 years. Energiesprong is an initiative initiated in the Netherlands in 2013. Vilogia tested in France the first prototypes of this approach on 10 houses built in 1950 in Hem near Lille. Vilogia aims to rehabilitate 500 homes over 5 years using the same method. The Energiesprong method is as follows: using the current technological tools (digital and industrial method) to rehabilitate a dwelling in 3 weeks.


The production of renewable energy by photovoltaic panels located on the roof is 6,000 kWh guaranteed per year. The consumption of housing for cooking, hot water, heating, ventilation is 3000 kWh guaranteed per year. The tenant therefore has an annual "energy package" of 3000 kWh / year to cover his domestic needs. The dwellings were delivered in May 2018. For the 10 housing units the construction lasted 3 months. From the delivery, a monthly point is organized to evaluate the energy production, the energy consumption and the level of support necessary for the tenants.




Primary energy need: 77,00 kWhpe/m2.year

Primary energy need for standard building: 151,00 kWhpe/m2.yearven

More information: The photovoltaic production of 6000 kWh / year / housing covers all housing needs.




Envelope U-Value: 0,44 W.m-2.K-1

Air Tightness Value: 0,60




  • Heating system : Heat pump
  • Hot water system : Heat pump
  • Cooling system : No cooling system
  • Ventilation system : Double flow heat exchanger
  • Renewable systems : Solar photovoltaic



BMS: All consumption items (heating, ventilation, DHW, household appliances, set temperature, etc.) are monitored in the dwellings, in order to communicate to the occupants their consumption compared to a normal use of their home.




GHG in use: 4,00 KgCO2/m2/year

Building lifetime: 50,00 year(s)

Award labels

Available link languages