This article offers new theoretical and empirical insights into decision-making with regard to the domestication and incorporation of home energy efficiency artefacts. These items, such as insulation and heating systems, are currently of high social, political and environmental importance. Researchers investigating energy consumption and related topics have recently turned to theories of practice — especially that proposed by Shove and colleagues — which treat humans as ‘carriers’. In contrast, this article uses realist social theory to afford a pivotal role to (...) reflexivity in practice. Individual case studies, derived from in-depth interviews, are used to explore Archer's communicative, autonomous and meta-reflexive modes. And, at the same time, Archer's distinction between natural, practical and social orders of reality is used to show the importance of embodied and practical knowledge in HEE practices. As such, this article takes the theoretical focus in this research area beyond dispositions and.. (shrink)