Spatially heterogeneous rock barrens ecosystems in the Boreal Shield have several ecological and climatological functions, including carbon sequestration and provision of critical habitat for at-risk turtle species. However, predicted increases in fire frequency and intensity due to climate change are expected to reduce the availability of shallow organic soils used as turtle nesting habitat, and may alter habitat suitability by modifying surface energy exchange. This research aims to characterize surface energy balance in the eastern Georgian Bay rock barrens and provide a baseline by which to assess changes in energy partitioning resulting from wildfire. Continuous radiation balance, meteorological, and eddy covariance measurements have been collected at an unburned site since 2015. Growing season sensible and latent heat fluxes were evaluated using the Bowen ratio, alpha coefficients, and fluxes normalized by available energy. Relationships between energy balance components and atmospheric vapour deficit, phenology, and net radiation were also explored. We expect that fire disturbance will significantly impact surface energy fluxes, relative to the magnitude of interannual variability in unburned areas, and that post-fire changes in energy balance will affect suitability of potential turtle nesting habitat. Findings will inform adaptive management strategies to enhance habitat suitability following wildfire and maintain vulnerable reptile populations.