Since January 2017, energy advisers have been able to obtain certification by submitting an approval application to the Environmental Administration. Approval is conditional on membership of the OAI (architect or engineer in accordance with the Law of 13 December 1989) or an authorisation in accordance with the Grand Ducal Regulation of 10 February 1999 on the approval of natural or legal persons, private or public, other than the State, for the performance of technical study and control tasks in the field of energy, as amended.
From 15 December 2018, approved energy advisers will have to join a quality assurance system in the field of energy and sustainability consultancy for residential buildings with a body contracted for this purpose by the Ministry of Sustainable Development and Infrastructure.