Some 81% of respondents mention oil as one of the most-used energy sources, 77% gas and 36% nuclear energy, followed by coal at 35%. Their high degree of awareness of the energy mix can thus explain why respondents are focused on fuel price volatility: in the case of oil for example, which is the most-used energy source for a majority of Europeans, the signal transmitted by the price of the barrel can be considered as an indicator of consumers’ confidence in the security of energy supply of its country. To explore the possibility of correlation between the security of energy supply concerns and public attitudes towards nuclear energy that have been developed in the first part of this chapter, it is not sufficient to provide a snapshot into the state of public opinion on these issues.