Based on a survey of 2,000 persons conducted in 2009 in the PACA region (Provence Alpes Côte d'Azur), the aim of this survey is to highlight the existence of different types of public (mostly exclusive) concerned by energy issues: one of these publics is interested in a global issue (climate change) and another is concerned with electricity-supply problems in the PACA region, thus making energy a local issue. The study shows that these two publics, although they differ from territorial and ideological standpoints, have in common that they belong to the more affluent, educated and politically-minded social strata. In particular, they are more aware than the rest of the population of energy-saving issues in the PACA region. They therefore declare a greater number of thrifty behaviours (demand-side management (DSM) actions and/or investment). In accordance with works comparing consumer attitudes (Beck, 1986; Dozzi, Wallenborn & Lennert, 2008), there is little or no connection between electricity consumption and the fact of belonging to a concerned public. Whilst there are no direct links between individual preferences and practices, the latter being mediated by past individual choices and infrastructures, collective preferences can sustainably configure new practices. One interesting avenue of research would be to analyse how these publics appropriate proposals for public energy policies, and pricing policies in particular: price flexibility in terms of supply and demand, carbon dioxide (CO2) emissions, places of production or consumption volume (block tariffs).