Act 8/2013 fosters building refurbishment and urban regeneration and renovation, establishing a regulatory framework aimed to the building sector recovery. It seeks to promote quality, sustainability and competitiveness in the building sector. The Act establishes that in some cases it is possible to use free or public domain spaces, or common spaces for private use (additional roofs, facades, etc.), for the installation of solar collectors or other renewable energy sources, when they achieve at least a 30% reduction in the non-renewable primary energy consumption of a building. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]