1. The objective of the financial instrument for the modernisation of central government buildings (2021-2027 financing period) is to renovate public buildings heated and/or cooled or planned to be heated and/or cooled (hereinafter referred to as ‘public buildings’) owned or transferred to the manager of centrally managed public assets by the State or public bodies owned by the State in order to improve the energy efficiency of public buildings by achieving at least energy performance class B and improving the physical and energy performance of buildings and their engineering systems in accordance with the Programme for the Improvement of the Energy Efficiency of Public Buildings. 2. The objective of the financial instrument for RES legal entities is to promote investments in RES electricity generation facilities. 3. The objective of the financial instrument "Loans to heat suppliers" is energy efficiency measures for district heating, hot water and cooling systems, etc.