This programme promotes comprehensive actions favouring energy efficiency improvement and the use of renewable energies in the housing stock of existing buildings in the residential sector, and also to comply with article 4 of Directive 2012/27/EU, relating to energy efficiency. The actions are to fit one or more of the following typologies: Improvement of the thermal envelope energy efficiency; Improvement of energy efficiency in thermal and lighting installations; Replacement of conventional energy for biomass in thermal installations; Replacement of conventional energy with geothermal energy in thermal installations. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]