Understanding a transition to more sustainable energy use in the home requires attention not only to the technical capabilities of digital feedback systems, but also to how these technologies are integrated into everyday life over time. Research on Real-Time Energy Feedback (RTEF) has largely focused on short-term, utilitarian outcomes such as energy savings, with less attention to domestication, lived experience, and relational effects in households using renewable energy technologies. This paper reports an exploratory qualitative study combining household interviews (n=11), questionnaire surveys (n=22), and interviews with professionals (n=9) involved in the design, delivery, and governance of retrofit programmes at national, regional, and EU levels. The study examines how RTEF systems are configured, interpreted, and enacted in energy-producing households participating in pilot retrofit programmes. Drawing on Actor-Network Theory (ANT), the analysis conceptualises RTEF as a mediating element within the sociotechnical assemblages of the home, comprising household members, domestic spaces, renewable technologies, and energy infrastructures. Findings suggest that RTEF becomes an embedded mediator shaping micro-level adjustments to energy use, spatial practices, and coordination with on-site generation. Rather than transforming structural constraints, RTEF mainly reconfigures awareness and interpretative capacity within existing material and economic limits. The study reframes RTEF as a relational device shaping how households live with decentralised energy technologies while highlighting the limits of pilot interventions in addressing equity, energy poverty, and system-level transition.