News & Events

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.

Low Energy Apartment Futures (LEAF) results published

Share this Post:
LEAF case study - Saint Etienne - EWI installation

Solid wall insulation installed at LEAF case study: Saint Etienne

Low Energy Apartment Futures (LEAF) was a three year project that looked to improve the energy efficiency of multi-occupancy apartment blocks by overcoming the barriers experienced during the retrofit process. Retrofit of this type of building is essential to meet climate change targets and reduce fuel poverty as approximately 43% of Europeans live in flats[1]. However, this type of building is notoriously difficult to retrofit due to short-comings of Energy Performance Certificates (EPCs) and the challenges of engaging multiple owners.


Over the course of the project, eight European partners worked towards energy efficiency retrofit with 24 case study buildings across Austria, France, Germany, Hungary, Sweden and the UK. Through this work, the consortium identified the barriers and successes to apartment block retrofit. These lessons helped inform the production of an engagement and technical toolkit; country-specific, step-by-step guides to retrofitting multi-occupancy buildings. The case study results also informed national and European policy recommendations aimed at improving the policy landscape to support retrofit in these buildings.


The LEAF project has now been completed and an overview of the project is available as a summary in the Project Brochure or in detail in the LEAF final report.


The published results and resources include:


The project overview and results were presented on 8 March 2016 at the LEAF webinar, which is available to listen to again.

For more information about the project visit the LEAF website.

This project was funded by the European Union’s Intelligent Energy Europe (IEE) programme and local organisations in each country.


[1] Source: Eurostat, European Union (2011). This refers to the 27 EU member states.

Image © Alec 42