The cadastre of potential areas for thermal networks currently includes data on thermal density per hectare (100mx100m grid) of Vaud Canton.
The fields filled in are either from calculations (estimated consumption, SRE) or from actual data (actual consumption, energy agent).
The above geodata is based on consumption data per building. In the future, only real consumption data will be taken into account.

The link provided offers an open access map, geodata are available at: https://www.asitvd.ch/chercher/catalogue.html?view=sheet&guid=d30ea927-6d2f-9ee4-3d06-931b0c12f725&catalog=main&type=complete&preview=search_list