Deep geothermal energy projects are still rare in Canada, particularly in the province of Québec. Assuming that public awareness and social acceptability of this “new” energy source are key to its development, two Internet-based public awareness and opinion surveys were conducted: one among Québec province residents and another among Canadian students and professionals. Both aimed to study respondents’ knowledge and views on energy and deep geothermal energy. Findings reveal both Quebecers and Canadian students and professionals see the development of renewable energies as a very important energy-related issue. Despite different levels of knowledge and acceptance rates, they favour deep geothermal energy production. However, both categories of respondents’ level of support decline substantially when hydraulic stimulation is introduced, as concerns about groundwater pollution and soil contamination emerge.