A special investment support for energy efficiency and renewable energy in public buildings was established in 2005. Funding was made available for up to 30% of costs for the following types of investments: Energy mapping ; Conversion of the heating system to shift from fossil fuels or direct electric heating systems to renewable energy sources, heat pump or district heating; Attachment to district cooling; Installation of an electricity efficient lighting system; Installation of electricity efficient ventilation system; Installation of equipment for efficient steering, measuring, regulation and running of engines and heating system; Energy efficiency measures concerning the heat recycling; Energy efficiency measures to decrease the leakage of energy from buildings; Installation of solar cells (solar photovoltaic system). IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]