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How Viable are Energy Savings in Smart Homes? A Call to Embrace Rebound Effects in Sustainable HCI

Published 17 Jun 2025 in cs.HC | (2506.14653v1)

Abstract: As part of global climate action, digital technologies are seen as a key enabler of energy efficiency savings. A popular application domain for this work is smart homes. There is a risk, however, that these efficiency gains result in rebound effects, which reduce or even overcompensate the savings. Rebound effects are well-established in economics, but it is less clear whether they also inform smart energy research in other disciplines. In this paper, we ask: to what extent have rebound effects and their underlying mechanisms been considered in computing, HCI and smart home research? To answer this, we conducted a literature mapping drawing on four scientific databases and a SIGCHI corpus. Our results reveal limited consideration of rebound effects and significant opportunities for HCI to advance this topic. We conclude with a taxonomy of actions for HCI to address rebound effects and help determine the viability of energy efficiency projects.

Summary

  • The paper systematically reviews literature and finds that fewer than 1% of computing studies address rebound effects in smart homes.
  • It reveals a critical research gap in HCI and sustainable computing, highlighting missed opportunities in understanding behavioral impacts.
  • The study introduces a taxonomy for direct, indirect, and structural rebounds, urging researchers to integrate behavioral insights into smart design.

An Analytical Overview of "How Viable are Energy Savings in Smart Homes? A Call to Embrace Rebound Effects in Sustainable HCI"

The paper "How Viable are Energy Savings in Smart Homes? A Call to Embrace Rebound Effects in Sustainable HCI" examines the implications of rebound effects in the context of smart home energy efficiency. Authored by Bremer et al., the paper explores the widespread assumption that smart home technologies lead to energy savings, challenging this assumption by highlighting the significance of rebound effects. Rebound effects occur when anticipated energy savings are diminished or negated by consequent behavioral or systemic changes, increasing overall energy consumption.

Key Findings and Contributions

The central contribution of the paper is its systematic examination of how rebound effects are considered within smart home technology research, particularly in the fields of Computing and Human-Computer Interaction (HCI). The authors conduct a comprehensive literature mapping using major databases, identifying a significant gap in the research that addresses the intersection of energy efficiency, smart homes, and rebound effects. Notably, the paper highlights that while rebound effects are well-documented in economic literature, there is limited exploration in the computing domain and within HCI research pertaining to smart homes.

Results Analysis

The results of the study demonstrate a striking lack of attention to rebound effects in smart home energy efficiency research. Through a dual search strategy across five distinct scientific databases, the authors identified very few studies that simultaneously address energy efficiency, smart homes, and rebound effects. For example, they found that, on average, fewer than 1% of the studies on energy efficiency referenced rebound effects in computing-related databases, such as IEEE and ACM. This contrasts sharply with broader scientific literature, suggesting a critical oversight within computing disciplines.

Within the HCI community, there appears to be relatively more awareness of rebound effects, although the engagement remains nominal. The paper identifies opportunities for HCI researchers to further explore the socio-technical systems at play in smart homes and to consider the socio-economic and cultural dynamics contributing to rebound effects.

Implications for Future Research and Practice

The study calls for a nuanced approach in smart home energy efficiency research, advocating for the necessity to incorporate an understanding of rebound effects into the design and evaluation of smart technologies. The lack of empirical research identifying and quantifying rebound effects in real-world settings suggests a need for HCI researchers to develop frameworks and methods for more holistic assessments. By doing so, the HCI community could significantly contribute to the effectiveness of smart home interventions and build a robust evidence base that could inform policy and practical applications.

Additionally, the paper presents a taxonomy to facilitate the systematic examination of rebound effects, categorized into "direct," "indirect," and "structural" rebounds. This taxonomy could serve as a foundation for future studies, providing a structured approach to understanding and mitigating the complex dynamics underlying rebound effects.

Theoretical and Practical Impact

One of the broader theoretical implications highlighted in the paper is the challenge rebound effects pose to the dominant narrative of energy efficiency. By exposing gaps in current research and policy, the authors argue for a shift toward sufficiency strategies that complement efficiency strategies. Practically, this implies developing smart home technologies that not only consider energy savings but also incorporate behavioral insights that mitigate the unintended consequences of energy use.

This research is positioned at a critical intersection, offering an impetus for a reevaluation of how digital technologies are integrated into climate action agendas. By prioritizing the study of rebound effects within smart home contexts, the authors urge policymakers, researchers, and practitioners to recognize the socio-technical complexities that impact the viability and effectiveness of energy savings.

Conclusion

In conclusion, Bremer et al. provide a timely critique and guide for advancing smart home energy efficiency research beyond simplistic assumptions. Emphasizing the need to integrate a deep understanding of rebound effects, the paper outlines a thoughtful call to action for the HCI community and the broader field of sustainable computing to lead efforts in establishing a paradigm shift toward more effective and holistic energy measures. Their work underscores a commitment to fostering interdisciplinary collaboration and enriching the discourse on the future of sustainable living environments.

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