Regulations concerning the issuance of Energy Certificates
The legal basis for energy certificates is given in chapter 5 of the Energy Saving Ordinance ("Energieausweise und Empfehlungen für die Verbesserung der Energieeffizienz"). The regulations concern i. a. the different occasions when energy certificates become compulsory, the use and principles of energy certificartes, the layout and structure of forms, the requirements for the recommendations to be included in the certificates and the skills neede to be an issuer for existing buildings.
According to § 16 EnEV, energy certificates are necessary:
- after the completion of a new building
- if - in correspondence with refurbishment measures or a larger extension - an energetic balance for the entire building is calculated
- with sale or renting of buildings or parts of buildings (e.g. apartments)
- for display on certain buildings of public service frequently visited by the public
In general, energy certificates are issued for an entire building. Energy certificates for single apartments or other units within buildings are not foreseen in Germany. According to § 20 EnEV, every energy certificate has also to include recommendations for improvements to the building.
With the EnEV 2013 new regulations were added concerning an independent control system for energy certificates and concerning the introduction of compulsory energy performance indicators for property advertisements
Since the first introduction of energy certificates for existing buildings, official bulletins are published with reference to the regulations of the Energy Saving Ordinance. These bulletins contain methods and simplifications applicable in course of the issuance of energy certificates and other calculations for existing buildings. Concerning the climate correction of consumption indicators in consumption-based certificates these bulletins refer to correction factors provided by Deutscher Wetterdienst (DWD; Gemany’s National Meteorological Service).
In principle, energy certificates for new buildings shall refer to the state of a finished building. In this context the question of the time of issuance is often subject of questions.
To act as assessor and issuer of energy certificates, an education and professional experience is needed. This is fully regulated by § 21 EnEV. A certification of assessors is not foreseen.