Understanding public perceptions of energy sources is essential for successful policy formulation. Our study explores the Serbian public's attitudes toward different types of energy, taking into account NIMBY (“Not In My Back Yard") sentiments, nationalist orientation, and pro-Russian attitudes. A correlational cross-sectional design utilized an online survey disseminated via social media platforms. The study examined public preferences for various energy types and their correlations with nationalist and pro-Russian tendencies. Poststratification weighting was applied to address sample representativeness. Our research revealed the public's preference for renewable energy, particularly solar and wind. Surprisingly, nationalist views did not significantly align with fossil fuel preferences, differentiating Serbia from Western European trends. Geopolitical considerations, such as Serbia's relationship with Russia, did not strongly influence public opinion. These findings underscore the importance of considering public preferences in shaping Serbia's energy policy, emphasizing the need for investment in renewables. Based on the results we offer concrete policy recommendations. This study offers a methodological approach adaptable to other countries undergoing similar energy transition. •The Serbian public strongly prefers renewable energy, particularly solar and wind.•The only renewable invoking NIMBY in Serbia are small hydropower plants.•The Serbian public does not want new fossil energy capacities in ‘their backyard’.•The preference for renewables is independent of nationalist orientation in Serbia.•Support for Russia does not translate to a preference for oil and gas.