France: DPE calculation changes on 1 January 2027
By the AFREEQUE newsroom, based on Algérie 360
Illustrative image · Bingqian Li · Pexels · Licence PexelsA reform of the energy performance diagnostic (DPE) calculation takes effect on 1 January 2027: the electricity conversion factor will fall from 1.9 to 1.7, which could move electrically heated homes up by one, or even two, classes and take some out of the energy-inefficient home category. No work is required, according to the 19 August 2026 decree cited by Algérie360.
From 1 January 2027, the electricity conversion factor used in the French energy performance diagnostic (DPE) will fall from 1.9 to 1.7, under a decree dated 19 August 2026. This change will reduce the weighting of electricity consumption in the energy performance calculation, according to the French government’s official website.
Homes heated with electricity are the main ones concerned and will be able to move up an energy class without carrying out any work. In rare cases, particularly for small properties, the improvement could reach two classes: a home rated G could therefore move to F, or even E, according to the French administration. Homes heated with gas or oil will be much less affected, while no home will see its rating worsen as a result of the reform.
New DPEs will directly incorporate the revised calculation method from 1 January 2027. Assessments carried out before that date will remain valid for their period of validity, with the possibility of benefiting from the new calculation method.





