The Implementation Working Group on Energy Efficiency in Buildings (IWG5) works to unlock the energy savings potential of the building sector. This includes boosting the potential of existing and new buildings. IWG5 is composed of Representatives of EU and associated countries, industrial stakeholders, non-governmental organisations and research institutes. IWG5 aims at delivering the Implementation Plan on energy-efficient solutions for buildings, requiring Member States to put in place measures favouring both innovation in building design and energy technologies for buildings, and the uptake of these technologies by the building sector.

The IWG5-CSA project, coordinated by EUREC, supports the IWG5 in delivering the implementation of the SET plan on energy-efficient solutions.