In Paris, energy consumption of social housing down 28% after renovation

Depending on the heating method, the "differences in the reduction in consumption observed after work" range from "-18 to -31%", but homes with individual heating benefit from a "greater reduction in consumption, close to -30%". % on average", explained Apur during a presentation of the study at City Hall.

The completion of the work made it possible to save "200 to 450 euros" per year and per dwelling, estimates Apur, which recalls that this average hides very disparate situations, electricity being in October 2023 "twice as expensive as the gas".

The panel studied represents 5% of the stock of the capital's three landlords, and 70% of the stock having been the subject of rehabilitation as part of the town hall's "Climate Plan", explained Apur.

This is the "first study of this magnitude on a French scale", commented housing assistant (PCF) Jacques Baudrier, for whom the results show that the work undertaken "is effective".

According to Apur, road transport aside, the residential sector represents 46% of the capital's energy consumption, including 38% for the private sector and 8% for the social sector.

Which makes Jacques Baudrier say that "the social park of Paris is already at the start, before reduction of consumption, much less consuming than the private park".

According to the deputy, this work allows many of these social housing units to see their energy performance diagnosis (DPE) label "go from C and D to B and C", whereas with an equivalent effort, "we would not will not even arrive in D" for the private park.

“Very positive for our social housing policy”, the study “also shows the enormous gap with the private sector”, he believes.

In February, the government, faced with a housing crisis, announced a correction of the "calculation bias" of the DPE for housing less than 40 m2, which should remove 140.000 housing units from the energy strainer category (labels F or G ).