Energy consumption in Parisian social housing fell by 28% on average after renovation work, according to a study by the Atelier Parisien d’urbanisme (Apur) carried out on more than 9,000 social housing units and presented Tuesday as “a first” in France.
Depending on the heating method, the differences in consumption reduction observed after work range from -18 -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 the Town Hall.
The completion of the work made it possible to save 200 to 450 euros per year and per home, estimates Apur, which recalls that this average hides very disparate situations, with electricity being twice as expensive as gas in October 2023.
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, according to 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 housing stock in Paris is already at the start, before reduction in consumption, much less consuming than the private stock.
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 DB to C, whereas with an equivalent effort, we will not even reach D for the private park.
Very positive for our social housing policy, the study also shows the enormous gap with the private stock, he believes.
In February, the government, faced with a housing crisis, announced a correction of the bias in calculating the DPE for housing less than 40 m2, which should remove 140,000 housing units from the energy sieve category (labels F or G).