The requirements for non-residential buildings for which planning permission was sought from 1 July 2015 onwards have been tightened: the energy efficiency standard has been raised from class D to class C.
Buildings for non-residential use (public and private) referred to as "non-residential buildings" are covered by the Grand Ducal Regulation of 31 August 2010 on the energy performance of non-residential buildings (as amended).
Among other matters, this regulation sets out:
- the type of buildings concerned by or, on the contrary, exempted from certification
- the need to produce an energy performance certificate for each building during construction or renovation or when made available for sale or rental
- the minimum threshold for energy performance certificates based on measured energy consumption for public buildings frequently visited by the public has been lowered to 250 square metres
- the requirement for a feasibility study covering technical, environmental and economic aspects for the construction of new non-residential buildings applies to all new non-residential buildings. The minimum threshold of 1,000 m2 in terms of energy reference area no longer applies
- the prescribed calculation methods
- the minimum energy performance requirements for new non-residential buildings (and buildings that are subject to extension, renovation or substantial transformation works and which, following works, become non-residential buildings)
- the procedures for updating energy performance certificates.
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