The action Upgrading buildings and improving energy efficiency in the domestic building sector C Cycle, which will be implemented under the Home Saving Programme II Save – Autonomously, aims to improve the energy efficiency of the country’s homes by contributing to primary energy savings, in order to achieve the relevant national target, in accordance with the National Energy Efficiency Action Plan. Furthermore, the planning of the Action ensures its social character by setting specific criteria concerning, inter alia, the income situation of the owners.