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Vulnerability to energy expenditure of tenants of the public housing office of the department of Isère (France)

The activities of the action program include the determination of the main factors of energy vulnerability of inhabitants, the most efficient actions to reduce it and then implement refurbishment. The targets are to reduce greenhouse gases emissions and to reduce economic vulnerability of inhabitants. The work is conducted with employees of OPAC 38, and is linked to the Agenda 21.
Results concerning energy vulnerability by type of buildings, heating system, size, heating energy, year of construction… have been set up (concerning about 20 000 flats). For each flat the vulnerability level can now be defined so that we can know how many people could be in a situation of vulnerability.
These results have been discussed in an internal steering committee in OPAC 38, which has been extremely interested.
The main results are a methodology to determine the level of vulnerability of a building. It can be used for other social housing companies for which the data used are available.
The first tests of this methodology to determine the effects of building refurbishments have started, and gave interesting results, showing that reduction of vulnerability depends on multiple criteria, and not only energy consumption.
The results have been presented, along with other experiences, in a workshop which has been held on November 22nd.