In 2010, the Energy Performance of Buildings Directive 2010/31/EU (EPBD) was adopted. This is the main legislative instrument to reduce the energy consumption of buildings. Under this Directive, Member States must establish and apply minimum energy performance requirements for new and existing buildings, ensure the certification of building energy performance and require the regular inspection of boilers and air conditioning systems in buildings. Moreover, the Directive requires Member States to ensure that by 2021 all new buildings are nearly zero-energy buildings.
More information on the EPBD.