Energy Conservation Regulations (EnEV) 2009

The EnEV is a performance-based code that requires a mandatory (equivalent model building) energy frame calculation to establish the expected primary energy consumption of residential and non-residential buildings. The regulation addresses thermal envelope requirements and energy using or producing systems in the calculation, including, HVAC, hot water, lighting (non-residential only), bio-climatic design and renewable energy.

 

Germany has had prescriptive building energy efficiency requirements since 1977. The first performance-based code was introduced following the implementation of the EPBD in 2002. The 2009 version and supporting policies encompasses many progressive aspects including, low maximum u-values established relevant to climate, mandatory computer simulation, air-tightness requirements, well established incentive schemes, frequent boiler and HVAC testing, robust EPC programs, voluntary low energy classes, and a national target for carbon free buildings by 2020.

 

Development Authority: Federal Ministry of Transport, Building and Urban Development; Federal Ministry of Economics and Technology

Implementation Authority: Federal states

Verification and Enforcement Authority: Building control authority (local level)

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