i20: Retrofitting Homes with Energiesprong approach

3 supporter

Our city has a large stock of terrace houses and other houses that are poorly insulated and use heating systems that are not future-proof (will not be sustained beyond 10-20 years). An integrated approach for this housing stock is needed that retrofits them and makes them future-proof. One such integrated approach is provided by Energiesprong (https://www.energiesprong.uk/). Energiesprong approach was pioneered in the Netherlands; it upgrades a home with innovative energy-saving and energy-generating measures, including new highly insulated outside walls and windows, a solar roof, and a state of the art heating system with ventive pods (a sort of air heat pump). The end result is homes that are almost net-zero carbon. This approach has been trialed with the UK in Nottingham and with great success (see here: https://www.nottinghamcityhomes.org.uk/news/news/more-ultra-low-energy-homes-on-the-way/ ). We suggest that the city council gets in touch with Energiesprong to elaborate on solutions for large-scale retrofitting of homes in the city.



Decarbonizing housing is very challenging not least because of the old housing stock. Energiesprong offers an integrated complete solution to retrofitting and future-proofing old housing stock without too much disruption to inhabitants. Given the scale of needed retrofitting it’s best to seek approaches that can be applied to whole districts and again Energiesprong is offering this service. People are currently still very reluctant to decarbonize their homes individually because of the uncertainty, lack of advice, costs etc. An approach where whole districts are retrofit at reduced costs and with council’s backing will be important to get people onboard.


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Reduced dissruption

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One of the benefits of Energysprong as aposed to other types of deep refurbishment of building fabric, is that the new fabric is wrapped around the existing (grown outwards). In other words, it is less dissruptive than internal insulation or re-roofing. The system is made off-site in the UK. I have visited the Nottingham project recently and talked to the housing association. Occupants seem very pleased and performance is good. This scheme is slightly unusual in that it uses a shared geothermal heat system and battery storage in addition to the Energysprong fabric treatment.

Issue #20

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